Abrégé

The disclosure relates to a build-up substrate (110) for a power package (100). The build-up substrate (110) comprises an electrically insulating layer (120) and a plurality of electrically conductive pads (131a-e) encapsulated in the electrically insulating layer (120). The electrically conductive pads (131a-e) are arranged to form an interleaved structure. The electrically conductive pads extend through the electrically insulating layer (120) from a first main surface (110a) to a second main surface (110b) of the insulating layer (120). The electrically conductive pads (131a-e) are aligned along a first major axis on the second main surface (110b). The build-up substrate (110) comprises a plurality of parallel conductors (132a-e) mounted on the second main surface (110b) of the electrically insulating layer (120). The parallel conductors (132a-e) are aligned along a second major axis on the second main surface (110b) of the electrically insulating layer (120). The first major axis is substantially orthogonal to the second major axis at a location on the second main surface (110b) of the electrically insulating layer (120) where a respective pad (131a-e) electrically connects a respective conductor (132a-e).

Classes IPC  ?

• H01L 23/31 - Capsulations, p.ex. couches de capsulation, revêtements caractérisées par leur disposition
• H01L 21/683 - Appareils spécialement adaptés pour la manipulation des dispositifs à semi-conducteurs ou des dispositifs électriques à l'état solide pendant leur fabrication ou leur traitement; Appareils spécialement adaptés pour la manipulation des plaquettes pendant la fabrication ou le traitement des dispositifs à semi-conducteurs ou des dispositifs électriques à l'état solide ou de leurs composants pour le maintien ou la préhension
• H01L 21/48 - Fabrication ou traitement de parties, p.ex. de conteneurs, avant l'assemblage des dispositifs, en utilisant des procédés non couverts par l'un uniquement des groupes
• H01L 23/498 - Connexions électriques sur des substrats isolants
• H01L 23/00 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide

Abrégé

The present application provides a power conversion apparatus and a control method therefor, and a power supply system. The power conversion apparatus comprises a controller and n power conversion modules, wherein n is a positive integer greater than 1. The n power conversion modules are connected in parallel, and the n power conversion modules each comprise a power switch. The controller is used for outputting a first control signal to the n power conversion modules, so that the n power conversion modules synchronously work, determining phase shifting angles corresponding to the n power conversion modules according to the voltage oscillation frequencies of two ends of each of the power switches having the same serial number in the n power conversion modules that synchronously work, and outputting a second control signal to the n power conversion modules according to the phase shifting angles corresponding to the n power conversion modules, so that the n power conversion modules work at staggered phases. According to the power conversion apparatus and the control method therefor, and the power supply system of the present application, the voltage oscillation of the two ends of a power switch is effectively suppressed without increasing the hardware cost.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont

Abrégé

Provided in the present application are an electronic device, a power supply circuit and a control circuit thereof. The power supply circuit comprises a power factor correction circuit, a direct-current bus, an inverter circuit, a voltage conversion circuit, a bidirectional rectification circuit and a battery, wherein a first end of the power factor correction circuit receives an input voltage, a second end thereof is connected to the inverter circuit by means of the direct-current bus, and a third end thereof is connected to the battery in sequence by means of the voltage conversion circuit and the bidirectional rectification circuit. The battery in the power supply circuit provided by the present application can reuse some circuits, such as a power factor correction circuit, during charging and discharging, thereby reducing the structural complexity of the power supply circuit and an electronic device in which the power supply circuit is located.

Classes IPC  ?

• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs

Abrégé

Disclosed in the present invention are a casing grounding detection method and an inverter. The inverter comprises: a positive electrode of a busbar, a negative electrode of the busbar, an earth wire terminal, a PID repair circuit, first and second detection resistors, and a casing, wherein the first detection resistor is connected to the positive electrode of the busbar and the casing, the second detection resistor is connected to the negative electrode of the busbar and the casing, and the repair circuit is connected to the negative electrode of the busbar and the casing; and the inverter is connected to a power generation assembly. The method comprises: collecting a first voltage, i.e. the voltage between a casing and an earth wire terminal; when the absolute value of the first voltage is not greater than a voltage threshold value, adjusting a second voltage by means of a repair circuit, wherein the second voltage is the voltage between a negative electrode of a busbar and the earth wire terminal; collecting a third voltage, i.e. the voltage between the casing and the earth wire terminal after the second voltage is adjusted; and according to whether the absolute value of the difference between the third voltage and the first voltage is not greater than a voltage difference threshold value, detecting whether the casing is grounded. In the present invention, whether the casing is grounded is determined according to a change in the voltage to ground of the casing, and no additional detection device is added, such that the safety of a system is improved.

Classes IPC  ?

• G01R 31/52 - Test pour déceler la présence de courts-circuits, de fuites de courant ou de défauts à la terre
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p.ex. module CA

Abrégé

The present disclosure relates to power systems and power generation systems based on photovoltaics (PV). The disclosure presents a power system with two PV-based power generation systems combined together. A first power generation system of the power system comprises one or more first PV strings, and comprises a first power conversion system connected to the one or more first PV strings. A second power generation system of the power system comprises one or more second PV strings, and comprises a second power conversion system connected to the one or more second PV strings. The power system also comprises one or more switches configured to selectively connect and disconnect the first power conversion system to and from the second power conversion system, and to selectively connect and disconnect the first power conversion system and the second power conversion system to and from earth.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 1/08 - Systèmes à trois fils; Systèmes ayant plus de trois fils

Abrégé

Disclosed in the present application are a battery cover plate, a battery, a battery pack and an energy storage system, which are used for monitoring the opening state of an explosion-proof valve of a battery. The battery cover plate comprises a cover plate body, a first electrode assembly and an explosion-proof valve, wherein the cover plate body is provided with a first through hole; the first electrode assembly comprises a first insulating member and a first conductive sheet, the first insulating member is arranged on a first side of the cover plate body and covers the first through hole, the first insulating member is provided with a second through hole and an open slot, the second through hole is opposite the first through hole in terms of position, one end of the open slot is in communication with the first through hole, and the other end of the open slot extends to a side wall of the first insulating member and is in communication with the outside; the first conductive sheet is arranged on the side of the first insulating member that faces away from the cover plate body; and the explosion-proof valve is arranged on the surface of one side of the cover plate body and covers the first through hole, the explosion-proof valve is provided with a notch, which defines, on the explosion-proof valve, a turn-over portion in the shape of an open ring, and the turn-over portion is used for being turned over in the notch when stress is put on same, and comes into contact with the first conductive sheet after being turned over.

Classes IPC  ?

• H01M 50/342 - Aménagements non refermables
• H01M 50/569 - Connexions conductrices de courant pour les cellules ou les batteries - Détails de construction des connexions conductrices de courant pour détecter les conditions à l'intérieur des cellules ou des batteries, p.ex. détails des bornes de détection de tension
• H01M 50/15 - Couvercles caractérisés par leur forme pour des cellules prismatiques ou rectangulaires
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires

Abrégé

The present application provides a direct-current conversion circuit and a photovoltaic inverter. The direct-current conversion circuit comprises an RC circuit, and a first direct-current conversion unit and a second direct-current conversion unit which are connected to each other in parallel. The RC circuit comprises a resistor and a capacitor which are connected in series. The two terminals of the RC circuit are respectively connected to one terminal of a first switching tube in the first direct-current conversion unit and one terminal of a second switching tube in the second direct current conversion unit. When the state of the first switching tube or the second switching tube is switched, the other switching tube remains in an on or off state. The RC circuit is used for absorbing a peak voltage when the state of the first switching tube or the second switching tube is switched, so as to reduce the voltage change rate of the first switching tube or the second switching tube. The circuit cost of the direct-current conversion circuit is reduced, and the circuit design complexity is low.

Classes IPC  ?

• H02M 3/156 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation
• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

Disclosed in the present application are a charging apparatus and a charging system. The charging apparatus comprises: a plurality of first alternating-current power supply lines, a plurality of first circuit groups, first direct-current buses, first switch circuits, which are located on the first alternating-current power supply lines, and a phase sequence detection circuit, which is connected to all the first alternating-current power supply lines, wherein rectifier circuits in all the first circuit groups are connected to charging circuits in all the first circuit groups by means of the first direct-current buses. A pooling design is performed on the first direct-current buses, such that a photovoltaic device and an energy storage device can be superposed onto the first direct-current buses. Moreover, whether phase sequences of the plurality of first alternating-current power supply lines are consistent is detected by means of the phase sequence detection circuit, when the phase sequences are consistent, all the first switch circuits are connected, and when the phase sequences are inconsistent, all the first switch circuits are disconnected, such that damage to a device due to wrong wiring can be avoided.

Classes IPC  ?

• B60L 53/30 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques - Détails de construction des stations de charge
• H02J 7/02 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries pour la charge des batteries par réseaux à courant alternatif au moyen de convertisseurs
• B60L 53/64 - Optimisation des coûts énergétiques, p.ex. en répondant aux tarifs d'électricité

Abrégé

Provided are a multi-input power supply circuit and an electronic device. A sampling circuit (104) of a multi-input power supply circuit (10) comprises at least one resistor. The at least one resistor provides a voltage feedback signal for a control circuit (105) of the multi-input power supply circuit (10) according to an input voltage at an input interface (101) of the multi-input power supply circuit (10), and provides an isolation function between the input interface (101) and the control circuit (105). On the basis of implementing input voltage sampling and isolation, the sampling circuit (104) of the multi-input power supply circuit (10) has the beneficial effect of the complexity of a circuit structure being relatively low.

Classes IPC  ?

• H02J 4/00 - Circuits pour réseaux principaux ou de distribution, la nature alternative ou continue du courant n'étant pas précisée
• H02M 1/10 - Dispositions comprenant des moyens de conversion, pour permettre l'alimentation à volonté d'une charge par des sources de puissance de nature différente, p.ex. à courant alternatif ou à courant continu
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs

Abrégé

Provided in the present application are an energy storage system and an island detection method. The energy storage system comprises energy storage units, power conditioning systems, a frequency measurement circuit and a controller, wherein the controller executes first/second frequency adjustment control over the power conditioning system, adjusts the weight of the first/second frequency adjustment control according to a frequency difference between the frequency of an output voltage of the power conditioning system and a target frequency, controls the frequency of the output voltage of the power conditioning system to become the target frequency, and detects that an island phenomenon occurs in the power conditioning system. By means of the first/second frequency adjustment control, the frequency of the output voltage of the power conditioning system is adjusted in a first/second direction, wherein the first direction is a direction tending to a reference frequency of a power grid, and the second direction is a direction away from the reference frequency of the power grid. After an island occurs in a power conditioning system in an energy storage system, a controller can pull, to a target frequency, the frequency of an output voltage of the power conditioning system, in which the island occurs, such that an island phenomenon can be detected, and an anti-island protection action is completed.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase

Abrégé

Provided in the present application are a heat dissipation system and a power apparatus. The heat dissipation system comprises a power module, an evaporator and a condenser, wherein the power module comprises a thermally conductive substrate and a power device fixed to a first surface of the thermally conductive substrate; the evaporator is provided with an evaporation cavity filled with a refrigerant; at least one side wall of the evaporator is provided with a window in which the thermally conductive substrate is embedded, at least part of the surface of the thermally conductive substrate is immersed in the refrigerant, and the first surface is located on the outer side of the evaporation cavity; heat generated by the power device is conducted by the thermally conductive substrate to the refrigerant to vaporize the refrigerant; and the condenser communicates with the evaporation cavity, so that the vaporized refrigerant can enter the condenser, and the refrigerant condensed into a liquid state by the condenser can flow back to the evaporation cavity. The phase-change heat transfer of the refrigerant can take away the heat generated by the power device, and reduce the thermal resistance from the power module to the air, which can improve the heat dissipation capability of the power module and is thus conducive to improving the product performance of the power apparatus in which the heat dissipation system is used.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

A controller of an electric motor control module, a control method for an electric motor, and a related device. A communication end of the controller (1011, 3011, 4011) is connected to an assisted driving controller (203, 302, 402) or an autonomous driving controller (204, 303, 403); the controller (1011, 3011, 4011) receives a target speed and a target acceleration, which are sent by the assisted driving controller (203, 302, 402) or the autonomous driving controller (204, 303, 403); and an output end of the controller (1011, 3011, 4011) is connected to an inverter circuit (1012, 3012, 4012) in an electric motor control module, so that in response to a speed adjustment signal, the controller (1011, 3011, 4011) controls the inverter circuit (1012, 3012, 4012) to adjust a current which is output to a first electric motor (1013, 3013, 4013). A control delay of assisted driving or autonomous driving can be reduced, and good safety is achieved.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p.ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désirées; Adaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p.ex. vitesse, couple, variation programmée de la vitesse
• H02P 23/00 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur
• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
• H02P 29/40 - Régulation ou commande de la quantité de courant consommé ou fourni par le moteur pour commander la charge mécanique

Abrégé

The present application discloses a grid-tie inverter system and a low-frequency oscillation suppression method. The system comprises a converter, a supplementary damping controller, a sampling circuit, and a controller. The converter is connected to a direct-current input end, a power grid, the controller, and the sampling circuit. The sampling circuit is connected to the supplementary damping controller. The controller is connected to the supplementary damping controller. The converter is used for outputting a grid-tie voltage, a grid-tie current and power to the power grid. The sampling circuit is used for detecting the grid-tie voltage, the grid-tie current and a power frequency of the power grid. When the power grid is in a low-frequency oscillation state, the supplementary damping controller is used for outputting a power supplement value to the controller on the basis of the grid-tie voltage and the power frequency. The power supplement value comprises an active power supplement value and a reactive power supplement value. According to the power supplement value, the controller is used for adjusting reactive power and active power output by the converter. According to the present application, output power of the converter is adjusted according to the power supplement value to suppress low-frequency oscillation, thereby reducing grid-tie voltage fluctuation and power generation loss.

Classes IPC  ?

• H02J 3/48 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante en phase
• H02J 3/50 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs contrôlant la répartition de la composante déphasée
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif

Abrégé

Embodiments of the present application provide a multi-level conversion circuit, comprising a bridge arm, an inductor, a first level conversion unit, and a second level conversion unit. The bridge arm is connected to the first level conversion unit and the second level conversion unit in parallel, and the midpoint of the bridge arm is connected to the inductor; each level conversion unit comprises a first switching transistor, a second switching transistor, a first capacitor, a second capacitor, and a level increasing circuit; series connection ends of the first capacitor and the second capacitor are connected to series connection ends of the first switching transistor and the second switching transistor by means of the level increasing circuit; the first capacitor and the first switching transistor of the first level conversion unit are connected to a first direct-current connection end; the second capacitor and the second switching transistor of the first level conversion unit are respectively connected to the first capacitor and the first switching transistor of the second level conversion unit; the second capacitor and the second switching transistor of the second level conversion unit are connected to a second direct-current connection end; and the level increasing circuit is used for increasing a circuit level. By using the present application, the switching voltage of each switching transistor can be reduced, and the current ripple of the inductor can be reduced.

Classes IPC  ?

• H02M 7/487 - Onduleurs bloqués au point neutre
• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont

Abrégé

The present application provides a converter and a control method therefor. The converter comprises a main switch transistor, an auxiliary switch transistor, a transformer, and a controller. After the converter operates, the controller obtains the output voltage of the converter and obtains a mode switching parameter on the basis of the output voltage of the converter; and controls the converter to switch between a first working mode and a second working mode according to the mode switching parameter. By adopting the present application, the efficiency of the converter under the full-range output voltage can be optimized.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

The present application provides a fault ride-through method applied to a converter. The converter comprises a conversion circuit and a filter inductor; an input end of the conversion circuit is configured to be connected to a direct-current source; a first end of the filter inductor is configured to be connected to an output end of the conversion circuit; and a second end of the filter inductor is configured to be connected to a load. The fault ride-through method is executed by the converter. The fault ride-through method comprises: measuring an inner potential vector of a first end and a terminal voltage vector of a second end of a filter inductor; and when the amplitude of the terminal voltage vector of the second end of the filter inductor decreases to be less than or equal to a preset terminal voltage extremum, reducing the inner potential vector of the first end of the filter inductor, so as to reduce the amplitude of a filter inductor current vector on the filter inductor to be less than or equal to a preset current amplitude limit value, wherein the inner potential vector, the terminal voltage vector, and the filter inductor current vector form a trigonometric function relationship. The present application also provides a converter.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

Provided in the present application are a power supply system and a grid-forming control method, which can increase the frequency synchronization speed of a grid-forming power generation device. The power supply system may comprise at least one new-energy power generation device. The new-energy power generation device may comprise a power converter and a control apparatus. The control apparatus can output an output voltage phase of the power converter according to the difference between a target output parameter of the power converter and an output parameter of a point of interconnection. When the phase difference of the voltages of the point of interconnection within a threshold time is greater than a preset threshold, the control apparatus adjusts the output voltage phase of the power converter.

Classes IPC  ?

• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A heat dissipation apparatus (100), a power device and a photovoltaic system, which have a better heat exchange effect. The heat dissipation apparatus (100) may comprise a housing (110); a heat source is fixed on the outer surface of a first side wall (1101) of the housing (110), or the first side wall (1101) of the housing (110) is provided with a window (1131a), and a heat source is fixed on the outer surface of a heat-conducting substrate (1101b) embedded in the window (1131a); a first partition plate (111) is provided in the housing (110); the first partition plate (111) divides the housing (110) into a first cavity (112) and a second cavity (113), one or more channels (1111) are provided on the first partition plate (111), each channel (1111) is used for enabling the first cavity (112) to be communicated with the second cavity (113), and the end of each channel (1111) close to the first side wall (1101) faces an area of the first side wall (1101) where the heat source is fixed or faces the heat-conducting substrate (1101b).

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p.ex. module CA
• H02M 7/00 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu; Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif
• H02J 7/35 - Fonctionnement en parallèle, dans des réseaux, de batteries avec d'autres sources à courant continu, p.ex. batterie tampon avec des cellules sensibles à la lumière

Abrégé

The present application provides a heat dissipation system and a power apparatus. The heat dissipation system can comprise a power module and a condenser. The power module can comprise a base and a power device, the base is provided with a first cavity, and the first cavity is filled with a refrigerant. The power device is provided on a first surface of the base, the power device is in thermally-conductive contact with the first surface, heat generated by the power device can be transmitted to the first cavity from the first surface and then conducted to the refrigerant, and the refrigerant can be vaporized into steam after being heated. In addition, the condenser is communicated with the first cavity, and the vaporized refrigerant can enter the condenser; and the refrigerant condensed by the condenser into a liquid state can flow back to the first cavity. The phase change heat exchange of the refrigerant can take away a large amount of heat generated by the power device, the thermal resistance from the power module to the air can be reduced, and the heat dissipation capability of the power module can be improved, so that the improvement of the product performance of the power apparatus using the heat dissipation system is facilitated.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

Provided in the present application are a power control method, a power converter and a power supply system. The power converter comprises a controller and a power conversion circuit, wherein the controller is connected to the power conversion circuit; the controller is used for obtaining a target power reference value of the power conversion circuit on the basis of the output electric quantity of the power conversion circuit, and a multi-segment droop hysteresis loop plane; and the controller is further used for controlling an output power value of the power conversion circuit to be equal to the target power reference value. By using the present application, the output power of the power converter in an area can be quickly adjusted in a scenario having a high photovoltaic-storage ratio, such that repeated continuous oscillations of the output power of the power converter are prevented, thereby improving the reliability and safety of the power converter.

Classes IPC  ?

• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité

Abrégé

A photovoltaic system (10), and a circuit protection method for the photovoltaic system (10). The photovoltaic system (10) comprises an active protection switch (103), a direct current-direct current conversion circuit (106) and a controller (109), wherein one end of the active protection switch (103) is connected to a photovoltaic assembly, the other end thereof is connected to an input end of the direct current-direct current conversion circuit (106), and an output end of the direct current-direct current conversion circuit (106) is connected to a load; and the controller (109) is used for: when the reverse current of a photovoltaic unit (101) is greater than or equal to a current threshold value, issuing, to the active protection switch (103) and according to the input voltage of the direct current-direct current conversion circuit (106), a disconnection instruction for triggering the disconnection of the active protection switch (103), and when the active protection switch (103) is not effectively disconnected within a preset duration after the disconnection instruction is issued to the active protection switch (103), adjusting the input voltage of the direct current-direct current conversion circuit (106) to be less than or equal to a first voltage threshold value. The safety and reliability of the photovoltaic system (10) can be improved.

Classes IPC  ?

• H02H 7/00 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan
• H02H 7/20 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour équipement électronique
• H02S 40/30 - Composants électriques

Abrégé

Provided are an electromagnetic apparatus and an electronic device. The electromagnetic apparatus comprises a housing, a magnetic component and a cover. An opening is formed at a first end of the housing; the housing is internally provided with an accommodating cavity; the accommodating cavity is communicated with the opening; and the accommodating cavity is filled with a fluid-like heat conduction medium. The cover has a first surface and a second surface which are opposite to each other; the magnetic component is fixedly connected to the first surface of the cover; the first surface of the cover faces the first end of the housing, and the cover is fixedly connected to the housing, such that the magnetic component is located in the accommodating cavity, and the heat conduction medium coats the magnetic component. When using the described solution, the cover is fixedly connected to the housing, and the magnetic component is located in the accommodating cavity, such that the heat conduction medium coats the magnetic component; the cover seals the housing to form a sealing structure, thereby avoiding overflowing of the fluid-like heat conduction medium; the heat conduction medium can be gradually cured in the sealing structure formed by the cover and the housing, and subsequent procedures can be implemented after the cover seals the housing, such that the curing procedure can be omitted, thereby improving the production efficiency of magnetic components.

Classes IPC  ?

• H01F 27/02 - Enveloppes
• H01F 27/08 - Refroidissement; Ventilation
• H01F 27/10 - Refroidissement par liquide

Abrégé

Disclosed in the embodiments of the present application are a motor controller, a powertrain and an electric vehicle. The motor controller comprises an inverter circuit, the inverter circuit comprising three bridge arms. Each bridge arm comprises an upper bridge switching transistor and a lower bridge switching transistor, and bridge arm midpoints of the three bridge arms are respectively connected to three-phase windings of a driving motor. In response to the current frequency of at least one phase of windings being greater than or equal to a first frequency threshold value, the three upper bridge switching transistors or the three lower bridge switching transistors are switched from an alternating turn-on mode to a holding turn-on mode or a holding turn-off mode, or the three upper bridge switching transistors and the three lower bridge switching transistors are switched from an alternating turn-on mode to a holding turn-off mode. In response to the current frequency of at least one phase of windings being less than a second frequency threshold value, the three upper bridge switching transistors and the three lower bridge switching transistors are switched from an alternating turn-on mode to a holding turn-off mode, or the three upper bridge switching transistors or the three lower bridge switching transistors are switched from a holding turn-on mode to a holding turn-off mode. The embodiments of the present application can improve the control accuracy of motor controllers.

Classes IPC  ?

• H02P 27/06 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs
• H02P 27/08 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par le type de tension d'alimentation utilisant une tension d’alimentation à fréquence variable, p.ex. tension d’alimentation d’onduleurs ou de convertisseurs utilisant des convertisseurs de courant continu en courant alternatif ou des onduleurs avec modulation de largeur d'impulsions
• H02P 23/00 - Dispositions ou procédés pour la commande de moteurs à courant alternatif caractérisés par un procédé de commande autre que la commande par vecteur
• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p.ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désirées; Adaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p.ex. vitesse, couple, variation programmée de la vitesse

Abrégé

Disclosed in the embodiments of the present application are a communication method and apparatus, wherein the method is applied to a first node, the first node is provided with a plurality of channels, different channels among the plurality of channels respectively bear information of different priorities, and the channels are physical channels, which are established by means of power lines. The method comprises: a first node generating a first message, which comprises first information; sending the first message to a second node by means of a first channel, wherein the first channel is a channel which bears information of a first priority among a plurality of channels, and the first priority is the priority of the first information; and the second node establishing a connection with the first node by means of a power line. In the embodiments of the present application, since information of different priorities can be sent by means of different channels, the information of different priorities can be sent by means of different channels at the same time, such that the waiting time of information can be shortened, and the transmission rate of the information in power line communication can thus be improved.

Classes IPC  ?

• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• H04L 47/6275 - Ordonnancement des files d’attente caractérisé par des critères d’ordonnancement pour des créneaux de service ou des commandes de service basé sur la priorité

Abrégé

The present application discloses a semiconductor device and a preparation method therefor, a power conversion circuit, and a vehicle. The semiconductor device comprises: an N-type semiconductor substrate, an epitaxial layer, a trench structure, a gate, an interlayer dielectric layer, a source, and a drain. The epitaxial layer comprises a first P-type semiconductor region. The bottom of the trench structure is in contact with the first P-type semiconductor region. The trench structure comprises a plurality of first trenches and a second trench, the first trenches extending in a first direction, and the second trench intersecting each of the plurality of first trenches and being in electrical communication with the first trenches. The gate is applied in the trench structure across a gate dielectric layer. The interlayer dielectric layer covers the gate and is provided with a contact hole extending in a second direction. The source is arranged on the interlayer dielectric layer. The source is in contact with a source region through the contact hole and is in electrical communication with the first P-type semiconductor region. The drain is arranged on the side of the semiconductor substrate away from the epitaxial layer. In this way, the total on resistance of the device is reduced.

Classes IPC  ?

• H01L 33/48 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails caractérisés par les éléments du boîtier des corps semi-conducteurs
• H01L 29/786 - Transistors à couche mince
• H01L 21/336 - Transistors à effet de champ à grille isolée

Abrégé

Disclosed in the present application are a semiconductor device, a preparation method, a power conversion circuit and a vehicle. The semiconductor device comprises: an N-type semiconductor substrate, a first epitaxial layer, a plurality of gate trenches which are spaced apart from each other, a gate, an interlayer dielectric layer, a source and a drain. The first epitaxial layer comprises a plurality of first P-type semiconductor regions, said first P-type semiconductor regions being arranged below the gate trenches; the gate trenches are arranged in the first epitaxial layer; the gate comprises first gates and second gates which are in contact with each other, the first gates filling the gate trenches and thus being separated by gate dielectric layers, and the second gates being arranged at the top of the first epitaxial layer; the interlayer dielectric layer covers the side of the gate away from the semiconductor substrate and is provided with contact holes extending in a second direction; the source is arranged on the side of the interlayer dielectric layer away from the semiconductor substrate, and makes contact with the first epitaxial layer by means of the contact holes; the drain is arranged on the side of the semiconductor substrate away from the first epitaxial layer. The total on-resistance of the device is reduced, and the robustness of the device is improved.

Classes IPC  ?

• H01L 29/78 - Transistors à effet de champ l'effet de champ étant produit par une porte isolée
• H01L 21/336 - Transistors à effet de champ à grille isolée

Abrégé

The present application discloses a semiconductor device and a preparation method therefor, a power conversion circuit and a vehicle. The semiconductor device comprises: an N-type semiconductor substrate, an epitaxial layer, a trench structure, a gate electrode, an interlayer dielectric layer, a source electrode and a drain electrode, wherein the trench structure is arranged in the epitaxial layer, the trench structure comprising a plurality of first trenches and a second trench, the first trenches extending in a first direction and being arranged at intervals in a second direction, the second trench extending in the second direction, and the second trench and each of the plurality of first trenches being cross-arranged and being in communication with each other; the gate electrode is filled in the trench structure across a gate dielectric layer; the interlayer dielectric layer covers the gate electrode and is provided with contact holes extending in the second direction; the source electrode is arranged on the interlayer dielectric layer and is in contact with the epitaxial layer via the contact holes; and the drain electrode is arranged on a side of the semiconductor substrate away from the epitaxial layer. In this way, the total on-resistance of the device is reduced.

Classes IPC  ?

• H01L 29/78 - Transistors à effet de champ l'effet de champ étant produit par une porte isolée

Abrégé

The present application discloses a semiconductor device, a manufacturing method, a power conversion circuit, and a vehicle. The semiconductor device comprises: an N-type semiconductor substrate, a first epitaxial layer, multiple gate trenches that are spaced apart from each other, a gate, an interlayer dielectric layer, a source, and a drain. The multiple gate trenches are arranged in the first epitaxial layer; the multiple gate trenches extend in a first direction; the gate comprises a first gate and a second gate in contact with each other, wherein the gate trenches are filled with the first gate with a gate dielectric layer interposed therebetween, and the second gate is arranged at the top of the first epitaxial layer with a gate dielectric layer interposed therebetween; the interlayer dielectric layer covers the side of the gate away from the semiconductor substrate, and is provided with a contact hole extending in a second direction; the source is arranged on the side of the interlayer dielectric layer away from the semiconductor substrate, and is in contact with the first epitaxial layer by means of the contact hole; and the drain is arranged on the side of the semiconductor substrate away from the first epitaxial layer. Thus, the total on-resistance of a device is reduced.

Classes IPC  ?

• H01L 29/78 - Transistors à effet de champ l'effet de champ étant produit par une porte isolée
• H01L 29/423 - Electrodes caractérisées par leur forme, leurs dimensions relatives ou leur disposition relative ne transportant pas le courant à redresser, à amplifier ou à commuter
• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 21/336 - Transistors à effet de champ à grille isolée
• H01L 29/16 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, mis à part les matériaux de dopage ou autres impuretés, seulement des éléments du groupe IV de la classification périodique, sous forme non combinée

Abrégé

Provided are a box for an energy storage device, an energy storage device and an energy storage system. The box comprises four stand columns, three side plates, a partition plate, a bottom plate and a sealing door, wherein the three side plates, the partition plate and the bottom plate are fixed by means of the four stand columns and enclose a closed second accommodation zone together with the sealing door; and the four stand columns and the partition plate enclose an open first accommodation zone. In the box provided in the present application, by means of reducing the height of the partition plate, the recessed open first accommodation zone is formed and used for accommodating external components of an energy storage device, such that the heat dissipation efficiency of the energy storage device can be improved, and the standardization of the overall size of the energy storage device can also be ensured; and the space required by the stacking of a plurality of energy storage devices or the occupied area required by the adjacent arrangement thereof can be reduced, thereby increasing the energy storage density of an energy storage system and reducing construction costs.

Classes IPC  ?

• H01M 50/244 - Boîtiers secondaires; Bâtis; Dispositifs de suspension; Dispositifs de manutention; Supports caractérisés par leur procédé de montage
• H02B 1/46 - Enveloppes; Leurs parties constitutives ou accessoires à cet effet - Parties constitutives ou accessoires

Abrégé

A power supply module, a vehicle-to-vehicle (V2V) power supply control method, and a vehicle. The power supply module is arranged between a power battery (110) of a first vehicle (11) and a charging interface (111) of the first vehicle (11), and in the power supply module, a first end and a second end of a powertrain (112) are respectively connected to two ends of the power battery (110) of the first vehicle (11); the first end of the powertrain (112) is further connected to a first charging interface of the first vehicle (11), and a third end of the powertrain (112) is connected to a second charging interface of the first vehicle (11) by means of a first switch unit; a control unit (114) acquires the voltage of the power battery (110) of the first vehicle (11) and the voltage of a power battery of a second vehicle (12), and under the condition that the voltage of the power battery (110) of the first vehicle (11) is greater than the voltage of the power battery of the second vehicle (12), controls the first switch unit to be turned off; in this case, the powertrain (112) is controlled to reduce the voltage of the power battery (110) of the first vehicle (11). V2V is realized by reusing the powertrain (112) in the first vehicle (11), so that costs are low.

Classes IPC  ?

• B60L 53/22 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques
• B60L 53/14 - Transfert d'énergie par conduction

Abrégé

The disclosure relates to a prepackage module (100) for embedding into a multilayer printed circuit board (PCB) (500). The prepackage module comprises: a power semiconductor component (140) comprising at least two terminals (141, 142); an electrically isolating and thermally conductive substrate (130) for transfer of heat from the power semiconductor component (140) to a heat sink. The substrate (130) comprises: a first metal layer (131a, 131b) structured to form at least one contact pad; a second metal layer (132); and a thermally conductive isolation material layer (133) for electrically isolating the first metal layer (131a, 131b) from the second metal layer (132). The prepackage module comprises a mold body (150) at least partly encapsulating the power semiconductor component (140) and the substrate (130). The prepackage module comprises: a first electrically and thermally conductive spacer (111) electrically contacting the first terminal (141) of the power semiconductor component (140); and a second electrically and thermally conductive spacer (112) electrically contacting a first contact pad (131a) of the first metal layer (131a, 131b).

Classes IPC  ?

• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
• H01L 23/498 - Connexions électriques sur des substrats isolants
• H01L 23/538 - Dispositions pour conduire le courant électrique à l'intérieur du dispositif pendant son fonctionnement, d'un composant à un autre la structure d'interconnexion entre une pluralité de puces semi-conductrices se trouvant au-dessus ou à l'intérieur de substrats isolants
• H01L 23/367 - Refroidissement facilité par la forme du dispositif
• H01L 23/00 - DISPOSITIFS À SEMI-CONDUCTEURS NON COUVERTS PAR LA CLASSE - Détails de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide
• H05K 1/18 - Circuits imprimés associés structurellement à des composants électriques non imprimés
• H01L 23/31 - Capsulations, p.ex. couches de capsulation, revêtements caractérisées par leur disposition
• H01L 23/433 - Pièces auxiliaires caractérisées par leur forme, p.ex. pistons

Abrégé

Disclosed in embodiments of the present application are a power supply system and a control method therefor. The power supply system comprises N distributed power supplies and at least one detection control unit; the N distributed power supplies are connected in parallel or in series and then connected to a power grid, wherein N is an integer greater than 1; the detection control unit is used for obtaining a power compensation control ratio of each distributed power supply on the basis of the impedance from each distributed power supply to a grid entry point of the power supply system when detecting that oscillation of the power supply system exceeds a preset threshold range, wherein the power compensation control ratio is a ratio of the power output by each distributed power supply to the total power output by the power supply system; the detection control unit is also used for controlling a power output ratio of each distributed power supply on the basis of the power compensation control ratio. By using the embodiments of the present application, oscillation of the power supply system can be inhibited, normal and stable operating of the power supply system can be guaranteed, and there is no need to change the original control circuit and provide an additional device, such that the implementation complexity is low and the implementation cost is low.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs

Abrégé

Provided is a vehicle control unit (104). A motor control unit (103) is connected to the vehicle control unit (104) and sends a first signal to the vehicle control unit (104); an electronic stability program (105) is connected to the motor control unit (103) or the vehicle control unit (104) and sends a second signal; and the vehicle control unit (104) is used for sending a third signal to the motor control unit (103). Before receiving the second signal, the vehicle control unit (104) generates and sends, by using the first signal sent by the motor control unit (103), the third signal to any one or more motor control units (103) in at least one motor control unit (103), so that the motor control unit (103) receiving the third signal adjusts torque so as to perform stability control on a vehicle. Thus, the control speed of the whole control process is higher, and the slip rate of a vehicle on a slippery road can be reduced. Also provided are a motor control unit and a related device.

Classes IPC  ?

• B60L 15/20 - Procédés, circuits ou dispositifs pour commander la propulsion des véhicules à traction électrique, p.ex. commande de la vitesse des moteurs de traction en vue de réaliser des performances désirées; Adaptation sur les véhicules à traction électrique de l'installation de commande à distance à partir d'un endroit fixe, de différents endroits du véhicule ou de différents véhicules d'un même train pour la commande du véhicule ou de son moteur en vue de réaliser des performances désirées, p.ex. vitesse, couple, variation programmée de la vitesse
• B60R 16/023 - Circuits électriques ou circuits de fluides spécialement adaptés aux véhicules et non prévus ailleurs; Agencement des éléments des circuits électriques ou des circuits de fluides spécialement adapté aux véhicules et non prévu ailleurs électriques pour la transmission de signaux entre des parties ou des sous-systèmes du véhicule

Abrégé

The present application provides a photovoltaic inverter and a control method therefor. The photovoltaic inverter is suitable for a power supply system, and the photovoltaic inverter comprises a conversion circuit, an acquisition circuit, and a controller; the acquisition circuit is used for acquiring a positive direct-current bus voltage and a negative direct-current bus voltage of the conversion circuit; and the controller is used for generating an even harmonic voltage regulation signal on the basis of the positive and negative direct-current bus voltages of the conversion circuit and the phase of the output voltage of the photovoltaic inverter, and generating a driving control signal on the basis of the even harmonic voltage regulation signal to control the on or off of a switching transistor in the conversion circuit, so as to control the conversion circuit to output a target voltage and reduce the difference between the positive and negative direct-current bus voltages of the conversion circuit. By using the present application, the on or off of the switching transistor in the conversion circuit can be regulated, the voltage stability of a midpoint of the conversion circuit is improved, the structure is simple, the method is simple and convenient, and high applicability is achieved.

Classes IPC  ?

• H02M 7/48 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande
• H02M 7/487 - Onduleurs bloqués au point neutre
• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 1/088 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques pour la commande simultanée de dispositifs à semi-conducteurs connectés en série ou en parallèle
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p.ex. module CA

Abrégé

Provided in the present application are a power conversion apparatus and an energy storage system. The power conversion apparatus comprises a power conversion circuit, a first power terminal, a second power terminal and a third power terminal, the power conversion circuit comprising a first positive end, a first negative end, a second positive end, a second negative end and at least one power device, wherein the potentials of the first negative end and the second negative end are the same; the power conversion circuit is used for converting, into a second voltage, a first voltage input by a first device, and outputting the second voltage to a second device; and the first power terminal is connected to the first positive end, the first negative end and/or the second negative end is connected to the second power terminal, and the third power terminal is connected to the second positive end. By using the power conversion apparatus provided in the present application, a power current flowing through a single board of a power conversion circuit can be minimized, thereby reducing the heat and current-through loss on the single board, and thus improving the system efficiency and reliability.

Classes IPC  ?

• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 3/32 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie utilisant des batteries avec moyens de conversion

Abrégé

Disclosed in the present invention are a plastic packaging module, a plastic packaging method and an electronic device. The plastic packaging module comprises a substrate, a solder resist layer is provided on a surface of the substrate, solder is placed in an enclosed area formed by the solder resist layer, a chip and the substrate are fixed by means of the solder, and the substrate and the chip fixed on the substrate are plastic-packaged to form the plastic packaging module. Also disclosed are a corresponding plastic packaging method and an electronic device. Using the solution of the present application, the solder resist layer not only provides a solder resist effect, but can also provide highly reliable joining of the solder resist layer and the substrate, and highly reliable joining between the solder resist layer and the plastic packaging material of the plastic packaging module.

Classes IPC  ?

• H01L 23/31 - Capsulations, p.ex. couches de capsulation, revêtements caractérisées par leur disposition
• H01L 21/56 - Capsulations, p.ex. couches de capsulation, revêtements
• H01L 23/498 - Connexions électriques sur des substrats isolants

Abrégé

Provided in the present application are a power device, an electronic device, and a circuit structure. The power device comprises: a power element, a current sampling element and a compensation element, wherein the power element comprises: a first control end, a first electrode and a second electrode; the current sampling element is used for measuring a current value between the first electrode and the second electrode of the power device; the current sampling element comprises: a second control end, a third electrode and a fourth electrode, the second control end being connected to the first control end, the third electrode being connected to the first electrode, and the fourth electrode being connected to the second electrode by means of the compensation element; the current sampling element is connected in series to the compensation element; the temperature coefficient of the current sampling element is opposite to that of the compensation element; and the compensation element can compensate for sampling value deviations of the current sampling current in different temperatures, such that sampling values outputted by the current sampling element when same samples the same current in different temperatures are the same or similar. Therefore, the voltage stress of a power device when overcurrent protection or short-circuit protection is triggered is reduced, and turn-off loss is reduced, thereby improving the current output capacity of the power device.

Classes IPC  ?

• H03K 17/14 - Modifications pour compenser les variations de valeurs physiques, p.ex. de la température

Abrégé

A totem-pole PFC circuit, a control method, and a power source apparatus. The control method comprises: when an alternating-current signal provided by a power source input end is within a positive half cycle, a soft-start module (10) transmitting, by means of a first diode and to a capacitor, the alternating-current signal which is within the positive half cycle; and when the alternating-current signal is within a negative half cycle, the soft-start module (10) transmitting, by means of a second diode and to the capacitor, the alternating-current signal which is within the negative half cycle. The first diode and the second diode are both silicon-carbide-based diodes, and the silicon-carbide-based diodes have the characteristics of low loss and no reverse recovery current, such that a reverse recovery current of a totem-pole PFC circuit can be eliminated, thereby reducing loss and increasing the switching frequency. In combination with a soft-start function of the soft-start module (10), the totem-pole PFC circuit can increase the switching frequency while implementing a soft start.

Classes IPC  ?

• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs

Abrégé

The present application provides a wireless charging device and a wireless charging system, capable of avoiding damage of near-field communication (NFC) circuits. A surface of the wireless charging device serves as a charging surface and allows for placement of at least one electronic device; the at least one electronic device comprises one or two of an NFC circuit or a wireless charging receiving circuit; the wireless charging device comprises a detection coil array; the detection coil array comprises a plurality of detection areas; the plurality of detection areas respectively correspond to a plurality of charging areas of the charging surface; each detection area has the capability of detecting the signal type of a signal sent by the electronic device, so as to detect whether the electronic device on the charging surface comprises an NFC circuit or a wireless charging receiving circuit. Depending on whether the electronic device on the charging surface comprises an NFC circuit or a wireless charging receiving circuit, the wireless charging device can adjust the power of wireless charging for the electronic device, such that damage of the NFC circuit can be avoided.

Classes IPC  ?

• H04B 5/00 - Systèmes de transmission à induction directe, p.ex. du type à boucle inductive
• H02J 50/80 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre l’échange de données, concernant l’alimentation ou la distribution d’énergie électrique, entre les dispositifs de transmission et les dispositifs de réception

Abrégé

A powertrain, comprising a heat exchanger (1), an electronic assembly (2), and a motor (3). The electronic assembly (2) comprises a first shell (21), the motor (3) comprises a second shell (31), the first shell (21) is fixedly connected to the second shell (31), and the heat exchanger (1) is also fixed to the first shell (21), so that the heat exchanger (1), the electronic assembly (2) and the motor (3) are fixed as a whole. The electronic assembly (2) comprises an electronic device (26), and the electronic device (26) is arranged in an accommodating cavity of the first shell (21). The heat exchanger (1) comprises a first flow channel (11). The first flow channel (11) is used for transmitting a cooling working medium. The electronic assembly (2) comprises a second flow channel (22). The second flow channel (22) passes through the accommodating cavity of the first shell (21), and the second flow channel (22) is communicated with the first flow channel (11). The motor (3) comprises a third flow channel (32). The third flow channel (32) passes through an accommodating cavity of the second shell (31), and the third flow channel (32) is communicated with the first flow channel (11). The same cooling working medium is used for heat dissipation of the motor and the electronic assembly, so that the integration level of the powertrain can be improved, and the heat dissipation effect of the powertrain is improved.

Classes IPC  ?

• B60K 11/02 - Dispositions des ensembles de propulsion relatives au refroidissement avec liquide de refroidissement
• H02K 9/19 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p.ex. de l'huile
• B60K 11/04 - Disposition ou montage des radiateurs, volets de radiateurs ou écrans de radiateurs

Abrégé

Disclosed are an electromagnetic apparatus and power supply equipment. The electromagnetic apparatus may comprise a substrate, a magnetic core, a winding structure, and a heat conducting assembly. A first via hole and a second via hole are formed in the substrate. The magnetic core is provided in the first via hole. The winding structure is provided in the substrate, and surrounds the magnetic core. The heat conducting assembly comprises a heat conducting column and a heat conducting piece, wherein the heat conducting column is provided in the second via hole, the heat conducting piece is provided in the substrate, and the heat conducting column is connected to the winding structure by means of the heat conducting piece. When the structure is used, heat of the winding structure can be transferred to the heat conducting column through the heat conducting piece, then guided to the surface of the substrate through the heat conducting column, and thus can be transferred to a surrounding space through another heat conducting material or heat conducting device or the like, thereby reducing the temperature of the winding structure. The working temperature of the electromagnetic apparatus is relatively low, thereby providing a support for electronic equipment to be evolved towards high power density and miniaturization.

Classes IPC  ?

• G06F 1/30 - Moyens pour agir en cas de panne ou d'interruption d'alimentation

Abrégé

The present application discloses a battery pack and a measurement method therefor, and a battery management system (BMS), for use in finding abnormal connections between battery sub-packs in a battery pack in a timely manner. The battery pack comprises a plurality of battery sub-packs, voltage measurement circuits, a current measurement circuit, and a BMS, the plurality of battery sub-packs are connected in series in a charging/discharging circuit of the battery pack, and each battery sub-pack and one connection member connected to the battery sub-pack constitute a component to be measured. The current measurement circuit is used for measuring the current of the charging/discharging circuit; the voltage measurement circuits are used for measuring the voltage of two ends of the component to be measured; and the BMS is used for obtaining, according to a preset cycle, the current of the charging/discharging circuit and the voltage of two ends of each component to be measured, generating a current sequence and a first voltage sequence of each component to be measured, respectively calculating, according to the current sequence and the first voltage sequence, the impedance of each component to be measured, and determining that the connection member in the component to be measured is connected abnormally when the impedance is greater than or equal to an impedance threshold.

Classes IPC  ?

• G01R 31/396 - Acquisition ou traitement de données pour le test ou la surveillance d’éléments particuliers ou de groupes particuliers d’éléments dans une batterie
• G01R 31/392 - Détermination du vieillissement ou de la dégradation de la batterie, p.ex. état de santé
• G01R 31/389 - Mesure de l’impédance interne, de la conductance interne ou des variables similaires
• G01R 31/3842 - Dispositions pour la surveillance de variables des batteries ou des accumulateurs, p.ex. état de charge combinant des mesures de tension et de courant
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p.ex. le niveau ou la densité de l'électrolyte

Abrégé

Embodiments of the present application provide a motor, a power assembly, and a vehicle. The motor comprises a stator iron core and a winding structure wound thereon, and further comprises a first injection molded structure. The first injection molded structure comprises a first injection molded part and a plurality of first busbars. Each first busbar comprises a first body and a first electrical connector, and the first electrical connector of each first busbar is correspondingly connected to a first outlet end of each phase of the winding structure. The first injection molded part is arranged wrapping around the first bodies of the first busbars so as to fix the first busbars. An insulating cover plate is arranged on the first injection molded structure, and the insulating cover plate covers the exposed first electrical connectors and the first outlet ends so as to increase the electrical clearance and the creepage distance between the first electrical connectors, the first outlet ends, an end cover of the motor, and a housing, improve the insulation safety of the motor, and facilitate the miniaturized design of the motor.

Classes IPC  ?

• H02K 3/50 - Fixation des têtes de bobines, des connexions équipotentielles ou des connexions s'y raccordant
• H02K 5/08 - Enveloppes en matériau isolant
• H02K 5/22 - Parties auxiliaires des enveloppes non couvertes par les groupes , p.ex. façonnées pour former des boîtes à connexions ou à bornes
• H02K 11/25 - Dispositifs pour détecter la température ou actionnés par des valeurs de cette variable
• H02K 7/10 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques

Abrégé

The present application provides a power device and a photovoltaic system, for use in improving the heat dissipation performance of power devices, thereby improving the use reliability of the power devices. The power device comprises a housing and a heat sink; a partition plate is provided in the housing; the partition plate divides the housing into a first cavity and a second cavity, and is provided with a first opening and a second opening for communicating the first cavity with the second cavity; a device to be heat-dissipated is provided in the first cavity; the second cavity is provided with an air inlet and an air outlet which are oppositely arranged in a first direction; the heat sink comprises first fins provided in the second cavity; channels are formed in the first fins and penetrate through the first fins in a second direction; two ends of each channel are respectively communicated with the first opening and the second opening; and a minimum included angle between the second direction and the first direction is greater than 0° and less than or equal to 90°.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02S 40/30 - Composants électriques

Abrégé

A photovoltaic power generation system and a control method therefor, used for implementing fast frequency support. The photovoltaic power generation system comprises: a direct current converter, adapted to be connected to an output of a photovoltaic module and performing voltage conversion on direct current outputted by the photovoltaic module; an inverter, used for converting direct current outputted by the direct current converter into alternating current and then outputting same to a power grid; and a first controller, used for generating a first driving signal according to two of a first voltage of the direct current of the direct current converter, active power outputted by the inverter, and an operating parameter of the power grid, and controlling the operating state of the inverter according to the first driving signal.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

The present application provides an energy storage system and a power supply control method for a battery management system. The energy storage system comprises a direct-current bus, an energy storage module, an alternating-current mains electricity module, an energy storage converter module, a power conversion module and a battery management system. The battery management system comprises a container monitoring unit. The power conversion module is used for converting an alternating-current voltage outputted by the alternating-current mains electricity module or an alternating-current voltage outputted by the energy storage converter module into a first direct-current voltage, taking a direct-current voltage outputted by the energy storage module, a bus voltage outputted by the direct-current bus and the maximum voltage in the first direct-current voltage as a second direct-current voltage, converting the second direct-current voltage into a third direct-current voltage and a fourth direct-current voltage, and respectively supplying power to the container monitoring unit on the basis of the third direct-current voltage and the fourth direct-current voltage. By means of embodiments of the present application, multiple power supply equipment supply power to the container monitoring unit in the battery management system by means of two power supply circuits, such that the charging efficiency is improved, and the stability of the energy storage system can be improved.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

Provided in the present application are a power converter and a power source. The power converter comprises a DC-AC conversion circuit, a transformer and a first AC-DC conversion circuit, wherein the DC-AC conversion circuit is coupled to the first AC-DC conversion circuit by means of the transformer; a primary winding of the transformer comprises at least two primary sub-windings, which have at least three primary winding connection ends, the numbers of turns of the primary sub-windings being correspondingly adjusted according to changes of correspondingly connected excitation voltages; and the DC-AC conversion circuit is used for temporally generating at least two different excitation voltages, one excitation voltage being correspondingly output to one primary sub-winding. In the present solution, on the side of a primary winding of a transformer, according to different excitation voltages which are generated by a DC-AC conversion circuit, windings in the primary winding that have different numbers of turns are correspondingly matched, so as to perform excitation, such that the voltage regulation flexibility of a power converter can be improved.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

Provided in the present application are a resonant sensor, a battery, a battery pack and an energy storage system. A first substrate is arranged on an outer side of a sensor body and protects the sensor body. In the sensor body, a second substrate and a third substrate are arranged in a stacked manner. The third substrate comprises a first conductor part and a second conductor part, wherein the first conductor part and the second conductor part are both located on the side of the third substrate that is away from the second substrate, and a first hollow part is provided between the first conductor part and the second conductor part, and is configured to isolate the first conductor part from the second conductor part; one or more sensitive elements are arranged on outer sides of the first conductor part and the second conductor part that are away from the second substrate, and each sensitive element is electrically connected to the first conductor part and the second conductor part; and a supporting component is arranged on an outer side of the third substrate that is away from the second substrate, and is configured to support the first substrate. The first substrate, the second substrate and the third substrate are flexible substrates, such that the resonant sensor can operate in an environment requiring a flexible characteristic.

Classes IPC  ?

• G01D 5/12 - Moyens mécaniques pour le transfert de la grandeur de sortie d'un organe sensible; Moyens pour convertir la grandeur de sortie d'un organe sensible en une autre variable, lorsque la forme ou la nature de l'organe sensible n'imposent pas un moyen de conversion déterminé; Transducteurs non spécialement adaptés à une variable particulière utilisant des moyens électriques ou magnétiques
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p.ex. le niveau ou la densité de l'électrolyte

Abrégé

The present application provides an axial motor rotor, an axial motor, a power assembly and an electric device. The axial motor rotor comprises a rotor backing plate, a plurality of magnetic pole units and a fixing member, wherein the rotor backing plate is used for being sleeved on a motor shaft of the axial motor, and the rotor backing plate is provided with a backing plate fixing hole. The plurality of magnetic pole units are located on the side of the rotor backing plate along an axial direction of the rotor backing plate and are sequentially arranged along a circumferential direction of the rotor backing plate, and at least a portion of the plurality of magnetic pole units are provided with magnetic pole fixing holes. The fixing member penetrates the magnetic pole fixing holes and the backing plate fixing hole so as to fix the rotor backing plate, the magnetic pole units, and the fixing member. According to the axial motor rotor provided by the present application, the fixing member penetrates the magnetic pole units and the rotor backing plate so that the magnetic pole units and the rotor backing plate are fixed, and the connection stability between the magnetic pole units and the rotor backing plate is improved.

Classes IPC  ?

• H02K 1/2795 - Rotors faisant face axialement à des stators le rotor étant formé de plusieurs aimants disposés sur la circonférence
• H02K 1/2798 - Rotors faisant face axialement à des stators le rotor étant formé de plusieurs aimants disposés sur la circonférence dans lesquels les deux faces axiales du stator font face à un rotor
• H02K 1/28 - Moyens de montage ou de fixation des parties magnétiques tournantes sur ou aux structures constituant le rotor
• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 7/10 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques
• H02K 7/116 - Association structurelle avec des embrayages, des freins, des engrenages, des poulies ou des démarreurs mécaniques avec des engrenages
• B60K 7/00 - Disposition du moteur dans ou jouxtant une roue motrice

Abrégé

The present application provides an axial electric motor rotor, an axial electric motor, a power assembly, and a vehicle. The axial electric motor rotor comprises a rotor support and a magnet structure, the rotor support comprises a first support portion and a second support portion that are arranged coaxially, the first support portion is sleeved on the side of the second support portion away from the axis of the second support portion, a plurality of magnet units in the magnet structure are sequentially arranged in a circumferential direction, each magnet unit is located between the first support portion and the second support portion, the magnet units are respectively fixed to the first support portion and the second support portion at two ends in the radial direction of the second support portion, and at least a portion of a first soft magnet and at least a portion of a first permanent magnet in the magnet units are stacked in the axial direction. In the present application, a magnet structure is formed by means of arranging a plurality of magnet units around each other, so that the processing process of each magnet unit is simpler, and fixation is realized by means of a rotor support, so that the reliability is improved; and the first soft magnet is configured to gather magnetic lines of force, thereby improving gap flux density, increasing output torque, and enhancing axial electric motor performance.

Classes IPC  ?

• H02K 1/2795 - Rotors faisant face axialement à des stators le rotor étant formé de plusieurs aimants disposés sur la circonférence

Abrégé

A power assembly. The power assembly comprises a generator control unit and a generator, wherein the generator control unit comprises N bridge arms, and the generator comprises N generator windings corresponding to the N bridge arms, with N being greater than or equal to 2. Each of the N bridge arms comprises a first end and a second end, wherein the first end of each bridge arm is connected to a positive bus, the second end of each bridge arm is connected to a negative bus, and a midpoint of each bridge arm is connected to one end of a generator winding; and the other end of each of the N generator windings is connected to one end of a power battery, and the other end of the power battery is connected to the positive bus or the negative bus. By means of the power assembly, the production cost thereof can be reduced. Further disclosed are a control method for a power assembly, and a hybrid electric vehicle.

Classes IPC  ?

• B60L 50/60 - Propulsion électrique par source d'énergie intérieure au véhicule utilisant de la puissance de propulsion fournie par des batteries ou des piles à combustible utilisant de l'énergie fournie par des batteries
• B60K 6/26 - Agencement ou montage de plusieurs moteurs primaires différents pour une propulsion réciproque ou commune, p.ex. systèmes de propulsion hybrides comportant des moteurs électriques et des moteurs à combustion interne les moteurs primaires étant constitués de moteurs électriques et de moteurs à combustion interne, p.ex. des VEH caractérisés par des appareils, des organes ou des moyens spécialement adaptés aux VEH caractérisés par les moteurs ou les générateurs
• B60W 20/00 - Systèmes de commande spécialement adaptés aux véhicules hybrides

Abrégé

The present application provides a power conversion device and a protection method therefor. The power conversion device comprises a terminal plate, an electrical energy conversion circuit, and a controller; a first terminal and a first temperature sampling circuit are arranged on the terminal plate, wherein the first terminal is connected to a direct-current power supply or the electrical energy conversion circuit by means of a protection switch. The first temperature sampling circuit is used for collecting a temperature parameter of the first terminal. The controller acquires the temperature parameter of the first terminal, and when the temperature parameter of the first terminal is greater than a temperature parameter threshold, controls the protection switch to be turned off. By using the present application, the temperature of a terminal to be subjected to temperature measurement can be acquired in time, such that the over-temperature protection of said terminal can be achieved in time when the temperature of said terminal is too high, thereby ensuring reliable operation of the terminal of the power conversion device.

Classes IPC  ?

• H02H 7/122 - Circuits de protection de sécurité spécialement adaptés pour des machines ou appareils électriques de types particuliers ou pour la protection sectionnelle de systèmes de câble ou ligne, et effectuant une commutation automatique dans le cas d'un chan pour redresseurs pour convertisseurs ou redresseurs statiques pour onduleurs, c. à d. convertisseurs de courant continu en courant alternatif
• H02H 5/04 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions non électriques normales de travail avec ou sans reconnexion sensibles à une température anormale
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité

Abrégé

The present application relates to the technical field of energy, and in particular, to a battery and a power system, for use in solving the problem of poor consistency of naked cells. The battery provided by the present application may comprise a housing, a plurality of naked cells, a detection assembly, an equalization assembly, and a battery management unit. The housing is provided with recesses, and the plurality of naked cells are arranged in the recesses and connected in series; the detection assembly is connected to the plurality of naked cells, and is used for monitoring the voltage of each naked cell; the equalization assembly is connected to the plurality of naked cells and can be used for discharging the naked cells; and the battery management unit is connected to the detection assembly and the equalization assembly, and is used for enabling, according to the voltage value of each naked cell monitored by the detection assembly, the equalization assembly to discharge the naked cells of which the voltage values are greater than a threshold. In the battery provided by the present application, the voltage values of the plurality of naked cells can be kept in a basically consistent state, thereby ensuring the service life and the safety of the battery.

Classes IPC  ?

• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 10/48 - Accumulateurs combinés à des dispositions pour mesurer, tester ou indiquer l'état des éléments, p.ex. le niveau ou la densité de l'électrolyte
• H01M 10/44 - Méthodes pour charger ou décharger

Abrégé

A powertrain and a vehicle. The powertrain (10) comprises a housing (100), a partition plate (200), a motor (300), a first liquid return channel (400) and a second liquid return channel (500). The partition plate (200) divides the interior of the housing (100) into a first cavity (110) and a second cavity (120). The motor (300) is located in the first cavity (110), and the motor (300) comprises a motor shaft (310) that penetrates through the partition plate (200) and extends into the second cavity (120). The first liquid return channel (400) is located outside the housing (100) and is communicated with the first cavity (110) and the second cavity (120), and is used for conveying liquid in the first cavity (110) into the second cavity (120). The second liquid return channel (500) is located outside the housing (100) and is communicated with the first cavity (110) and the second cavity (120), and is used for conveying the liquid in the first cavity (110) into the second cavity (120). The second liquid return channel (500) and the first liquid return channel (400) at most partially overlap in the circumferential direction of the motor shaft (310). Two liquid return channels are provided, so that the powertrain can meet liquid return requirements when being installed and arranged at any angle or used on a slope surface, thereby improving the adaptability and safety of the powertrain.

Classes IPC  ?

• B60K 11/02 - Dispositions des ensembles de propulsion relatives au refroidissement avec liquide de refroidissement
• H02K 5/20 - Enveloppes ou enceintes caractérisées par leur configuration, leur forme ou leur construction avec des canaux ou des conduits pour la circulation d'un agent de refroidissement

Abrégé

The present application provides a DC/DC converter, a method for controlling an output voltage thereof, and an energy storage system. A first input end and a second input end of the DC/DC converter are connected to a battery cluster, an output end of the DC/DC converter is connected to a direct-current bus, and the DC/DC converter comprises a first direct-current conversion circuit, a second direct-current conversion circuit and a controller. An input end of the first direct-current conversion circuit is connected to a direct-current power supply, and a first output end and a second output end of the first direct-current conversion circuit are connected to the first input end of the DC/DC converter and a first input end of the second direct-current conversion circuit, respectively. A second input end of the second direct-current conversion circuit is connected to the second input end of the DC/DC converter, and an output end of the second direct-current conversion circuit is connected to the output end of the DC/DC converter. The controller controls an output voltage of the first direct-current conversion circuit according to a voltage difference value between the battery voltage of the battery cluster and the bus voltage of the direct-current bus. By adopting the present application, high efficiency can be achieved for a DC/DC converter in a full range of voltage difference values.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02J 15/00 - Systèmes d'accumulation d'énergie électrique
• H02J 1/10 - Fonctionnement de sources à courant continu en parallèle
• H02M 3/00 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu
• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique

Abrégé

Disclosed in the embodiments of the present application are a direct-current converter, a communication device and a photovoltaic system. The direct-current converter comprises a full-bridge inverter, a control module, a transformer, a resonant circuit and a rectification module, wherein the full-bridge inverter comprises a first switch device, a second switch device, a third switch device and a fourth switch device; the control module adjusts the duty cycle of the first switch device, the second switch device, the third switch device or the fourth switch device to be a first duty cycle, such that an output voltage of the direct-current converter is a first voltage; and the control module further controls the operating frequency of the direct-current converter to be a first operating frequency, and the absolute value of the difference value between the first operating frequency and a resonant frequency of the resonant circuit is less than or equal to a threshold value, such that switch devices, apart from the adjusted first switch device, second switch device, third switch device or fourth switch device, in the direct-current converter operate in a soft-switching state. By means of the embodiments of the present application, the efficiency of a direct-current converter can be improved.

Classes IPC  ?

• H04L 27/00 - Systèmes à porteuse modulée
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

The present application relates to the technical field of motor windings, and in particular to a stator, a hairpin motor, a powertrain, and a vehicle, for use in enabling a fundamental winding factor to be high and a harmonic winding factor to be low. The stator comprises a stator iron core and a stator winding; a plurality of stator slots are uniformly formed in a circumferential direction on an inner wall of the stator iron core; the stator winding comprises flat wire conductors inserted into each stator slot; N layers of flat wire conductors are arranged in each stator slot, wherein N is an even number greater than or equal to 4; the flat wire conductors are respectively connected to form m phases of windings; each phase of winding comprises a plurality of phase units which are uniformly arranged at intervals in the circumferential direction of the stator iron core; each phase unit of each phase of winding comprises at least two phase belts; each phase belt of each phase unit comprises two adjacent layers of flat wire conductors; and a stator slot is disposed between adjacent phase belts of each phase unit in a staggered manner. The stator winding is a short-pitch winding, having a good torque ripple suppression effect when the motor is operating, reducing back electromotive force harmonic of the motor, and improving the performance of the motor.

Classes IPC  ?

• H02K 3/12 - Enroulements caractérisés par la configuration, la forme ou le genre de construction du conducteur, p.ex. avec des conducteurs en barre disposés dans des encoches
• H02K 3/28 - Schémas d'enroulements ou de connexions entre enroulements
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 29/03 - Moteurs ou génératrices à dispositifs de commutation non mécaniques, p.ex. tubes à décharge ou dispositifs à semi-conducteurs avec un circuit magnétique spécialement adapté pour éviter des ondulations du couple ou des problèmes de démarrage autonome

Abrégé

The present application provides a direct-current power converter and a direct-current power conversion system. The direct-current power converter comprises a controller, a first power conversion module and a second power conversion module, wherein a first direct-current end and a second direct-current end of the first power conversion module are respectively coupled to a first direct-current end and a second direct-current end of the second power conversion module, and are a first direct-current end and a second direct-current end of the direct-current power converter; a third direct-current end of the first power conversion module is a third direct-current end of the direct-current power converter, and a fourth direct-current end thereof is coupled to a third direct-current end of the second power conversion module; a fourth direct-current end of the second power conversion module is a fourth direct-current end of the direct-current power converter; the first power conversion module comprises at least one first full-bridge circuit; and the controller is used for controlling the first full-bridge circuit to operate in a full-bridge mode or a half-bridge mode on the basis of a first total voltage and/or a second total voltage. By using the present application, the application range of an input/output voltage can be expanded.

Classes IPC  ?

• H02M 3/00 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

The present application provides a power conversion device, a control method, and a power supply system. The power conversion device comprises a first group of input ends, a second group of input ends, a first direct-current conversion circuit, a second direct-current conversion circuit, a positive direct-current bus, a negative direct-current bus, a first bus capacitor, a second bus capacitor, a first output end and a second output end. The first bus capacitor and the second bus capacitor are connected in series between the positive direct-current bus and the negative direct-current bus, and the positive direct-current bus and the negative direct-current bus are respectively connected to the first output end and the second output end of the power conversion device. The first direct-current conversion circuit has an input end connected to a first input end of the first group, and output ends respectively connected to the two ends of the first bus capacitor. The second direct-current conversion circuit has an input end connected to a second input end of the second group, and output ends connected to the two ends of the second bus capacitor. A second input end of the first group is connected to the negative direct-current bus, and a first input end of the second group is connected to the positive direct-current bus. The present application can reduce the cost of power conversion devices.

Classes IPC  ?

• H02M 3/155 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 7/537 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

Provided in the present application are a converter and a power adapter. The converter comprises an inverter circuit, a resonant network, a transformer and a drive control module, wherein the inverter circuit comprises at least two switching tubes including a main switching tube and an auxiliary switching tube, which are connected in series; the transformer comprises a primary winding, a secondary winding and a primary auxiliary winding; a first connection end of the main switching tube is an input end of the inverter circuit and is connected to a power supply; a second connection end of the main switching tube is grounded by means of the auxiliary switching tube; the primary winding of the transformer is connected in parallel to two ends of the auxiliary switching tube or two ends of the main switching tube by means of the resonant network; the secondary winding of the transformer is an output end of the converter and is connected to a load; the primary auxiliary winding of the transformer is connected in parallel to two ends of at least two divider resistors connected in series; and the drive control module is configured to control, when the main switching tube is turned on and voltage zero-crossing of the primary auxiliary winding is detected, the main switching tube to be opened. By using the present application, the input voltage range of the converter can be widened.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

The disclosure relates to the field of power conversion between alternating current (AC) and direct current (DC) for power networks. The disclosure particularly relates to an AC to DC converter, a method for controlling such AC to DC converter, and an AC to DC converter arrangement. The AC to DC converter 100 comprises: an AC terminal (101) for receiving an AC voltage (A); a first DC terminal (103) for providing a reference voltage (N); a second DC terminal (102) for providing a positive DC voltage (DC+) relative to the reference voltage (N); a third DC terminal (104) for providing a negative DC voltage (DC-) relative to the reference voltage (N); and at least two switching circuits (110a, 110b, 110c) connected in series. Due to the series connection of the switching circuits, low voltage devices can be applied. With the appropriate modulation scheme, dynamic and static voltage balancing of these low voltage devices can be achieved. Due to a novel modulation scheme, each low voltage building block (switching circuit 110a, 110b, 110c) can be switched separately and therefore, overall dV/dt of the system is reduced. Therefore, simplified insulation and low EMI issues are advantages of this concept.

Classes IPC  ?

• H02M 7/483 - Convertisseurs munis de sorties pouvant chacune avoir plus de deux niveaux de tension
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs

Abrégé

A photovoltaic power supply system and a control method therefor. The photovoltaic power supply system comprises a power source, a collector and a photovoltaic inverter, wherein the photovoltaic inverter comprises a direct-current-side controllable switch, an inverter unit, an alternating-current-side controllable switch, a first controller, and a second controller. The collector is used for acquiring a power supply parameter of the photovoltaic power supply system; the first controller is used for switching off the direct-current-side controllable switch when the power supply parameter of the photovoltaic power supply system is greater than or equal to a power supply parameter threshold value, so that an electrical connection between the power source and the inverter unit is disconnected; and the second controller is used for switching off the alternating-current-side controllable switch when the power supply parameter of the photovoltaic power supply system is greater than or equal to the power supply parameter threshold value, so that an electrical connection between the inverter unit and a load is disconnected. By means of the photovoltaic power supply system, a connection between a power source and an inverter unit and/or an electrical connection between the inverter unit and a load can be flexibly disconnected when a fault occurs, thereby improving the level of safety; in addition, the number of switch groups is reduced, thereby simplifying the photovoltaic power supply system, and reducing the cost.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

The present application provides a power supply system and a grid-connected control method. The power supply system comprises a power supply, an inverter, a transformer, a power station acquisition module and an inverter acquisition control circuit. The power station acquisition module is used for acquiring the amplitude value and the frequency of a grid-connected voltage at a grid-connected point and obtaining a power station power adjustment signal on the basis of the amplitude value and the frequency of the grid-connected voltage. The inverter acquisition control circuit is used for acquiring the amplitude value and the frequency of an output voltage of an inverter, obtaining an inverter power adjustment signal on the basis of the amplitude value and the frequency of the output voltage, and controlling the inverter to output a target output power on the basis of the power station power adjustment signal and the inverter power adjustment signal. By using the present application, an output power of the inverter can be adjusted by means of the power station acquisition module and the inverter acquisition control circuit, the structure is simple, the control method is simple and convenient, the control precision and the adjustment efficiency are improved, the control time is reduced, and the control cost is reduced.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/46 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs contrôlant la répartition de puissance entre les générateurs, convertisseurs ou transformateurs
• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
• H02M 7/493 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande les convertisseurs statiques étant agencés pour le fonctionnement en parallèle

Abrégé

The present application provides a stator, a motor, a powertrain, and a mechanical device. The stator comprises a stator core, a coil winding, a first end plate, and a second end plate. The coil winding is provided inside the stator core. The stator core comprises a plurality of grooves extending in the axial direction and used for forming first cooling liquid flow channels. The plurality of grooves are arranged in the circumferential direction of the stator core, and each groove runs through the stator core in the axial direction. The first cooling liquid flow channels are communicated with a liquid inlet area of the stator core. The end surfaces of the two ends of the stator core in the axial direction are a first end surface and a second end surface, respectively, the first end plate is mounted on the first end surface, and the second end plate is mounted on the second end surface. A second cooling liquid flow channel is formed between the first end plate and the first end surface, and the second cooling liquid flow channel is communicated with the first cooling liquid flow channels. The first end plate comprises a plurality of first nozzles, and the first nozzles are communicated with second cooling liquid flow channels and face the coil winding. The motor has a small number of accessories, a low leakage risk, and a good heat dissipation effect.

Classes IPC  ?

• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement
• H02K 1/16 - Noyaux statoriques à encoches pour enroulements
• H02K 9/193 - Dispositions de refroidissement ou de ventilation pour machines avec enveloppe fermée et circuit fermé de refroidissement utilisant un agent de refroidissement liquide, p.ex. de l'huile avec des moyens pour empêcher les fuites de l'agent de refroidissement

Abrégé

The present application provides a control circuit for an asymmetrical half-bridge flyback circuit, a power supply module, and an electronic device. The control circuit is used for outputting a control signal to control an asymmetrical half-bridge flyback circuit. After the control circuit is started, a resonant capacitor in the asymmetrical half-bridge flyback circuit discharges a preset number of times according to the control signal sent by the control circuit. In response to the number of discharges of the resonant capacitor reaching the preset number of times, and an input voltage being greater than or equal to the lowest working voltage value of the asymmetrical half-bridge flyback circuit, a main power tube and an auxiliary power tube in the asymmetrical half-bridge flyback circuit are alternately connected and disconnected. According to the control circuit provided by the present application, when the resonant capacitor discharges, the current generated by the discharge of the resonant capacitor is relatively small, and no large current stress is generated. Therefore, the stable operation of the control circuit for an asymmetrical half-bridge flyback circuit, the power supply module, and the electronic device can be ensured, and the service life is prolonged.

Classes IPC  ?

• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs

Abrégé

A safety protection device for a pack battery pack. The pack battery pack comprises a plurality of battery cells. The device comprises: a plastic bottom plate comprising a plurality of grooves; and a side protection assembly comprising side plates and insulating films, wherein the side plates are vertically arranged on the plastic bottom plate along the edge of the plastic bottom plate, and the side plates and the plastic bottom plate define an open container; each insulating film is arranged on the side of the side plate located in the container; and the plurality of battery cells are arranged in the container, wherein the plurality of battery cells are placed on the plastic bottom plate and are not in contact with the inner surfaces of the grooves. The present application can avoid the defects such as charging of a case caused by short circuit between a battery cell and a case body and negative short circuit corrosion caused by electrolyte leakage of the battery cell, increase the insulation safety level of a pack battery pack, and reduce the insulation failure risk of the pack battery pack.

Classes IPC  ?

• H01M 50/593 - Moyens pour empêcher un usage ou une décharge indésirables pour empêcher les contacts incorrects à l’intérieur ou à l’extérieur des batteries caractérisés par les moyens de protection Éléments d’espacement; Plaques d’isolation
• H01M 50/571 - Procédés ou dispositions de protection contre la corrosion; Sélection de matériaux à cet effet

Abrégé

The present disclosure relates to a control entity for controlling a converter circuit to imitate an electrical output characteristic of a synchronous machine. The converter circuit comprises a three phase DC-to-AC converter, and a filter comprising for each phase an inductor and a capacitor, which together are electrically connected in parallel to an output of the three phase DC-to-AC converter. The converter circuit is configured to provide, using a voltage across the capacitor, an output voltage at an output of the converter circuit. The control entity is configured to measure a current through the inductor and the voltage across the capacitor, control the voltage across the capacitor by controlling the current through the inductor, and control the current through the inductor by controlling, using the measured current and the measured voltage, an output voltage of the three phase DC-to-AC converter.

Classes IPC  ?

• H02M 7/5387 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs, p.ex. onduleurs à impulsions à un seul commutateur dans une configuration en pont
• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/24 - Dispositions pour empêcher ou réduire les oscillations de puissance dans les réseaux

Abrégé

An indirect evaporative cooling system and a heat exchange assembly, by which there is no need to provide a pipe between the system and a machine room for air circulation in the machine room, thus occupying less space and helping to enlarge the space of the machine room. The system comprises a casing body (100), an indoor air channel and an outdoor air channel. The indoor air channel is communicated with a machine room and can be used for air circulation in the machine room. The outdoor air channel is communicated with the outside of the machine room and can be used for air circulation outside the machine room. Since the temperature of the air outside the machine room is lower than the temperature of the air in the machine room, a heat exchange between the indoor air channel and the outdoor air channel can cool the air in the machine room. An air inlet (K1) and an air outlet (K2) of the indoor air channel are provided on a first side (100A) of the casing body (100), and the first side (100A) is used to be attached to a wall of the machine room. An air inlet (M1) of the outdoor air channel is provided on another side of the casing body (100) other than the first side (100A), and an air outlet (M2) of the outdoor air channel is provided on another side of the casing body (100) other than the first side (100A).

Classes IPC  ?

• F24F 7/08 - Ventilation avec réseau de gaines à circulation d'air forcée, p.ex. par un ventilateur avec conduits séparés pour l'air fourni et l'air expulsé
• F24F 13/30 - Agencement ou montage d'échangeurs de chaleur

Abrégé

The present application provides an integrated inductor, a circuit board assembly and an inverter. The integrated inductor comprises a first magnetic core, at least two second magnetic cores and at least two windings, the first magnetic core comprising a first surface and a second surface which are opposite one another in a first direction, and the first magnetic core being provided with a first through hole penetrating through the first surface and the second surface. The second magnetic cores are arranged on a side of the first surface distant from the second surface in the first direction, and the second magnetic cores are provided with second through holes. The windings are wound around the first magnetic core and the second magnetic cores, the windings and the first magnetic core forming a common mode inductor, and the windings and the second magnetic cores forming differential mode inductors. A second magnetic core comprises a first part and a second part, the first part being located between the winding and the first surface in the first direction and on the side of the first surface distant from the second surface, and the second part being located on a side of the winding distant from the first surface. The first magnetic core and a second magnetic core share one set of windings, which can save area occupied by the integrated inductor during installation while ensuring the working efficiency of the integrated inductor.

Classes IPC  ?

• H01F 27/30 - Fixation ou serrage de bobines, d'enroulements ou de parties de ceux-ci entre eux; Fixation ou montage des bobines ou enroulements sur le noyau, dans l'enveloppe ou sur un autre support

Abrégé

The present disclosure relates to a converter circuit. The converter circuit comprises n input ports; an output port; n three port converters (TPCs) each having a first port, a second port, and a third port; and m further converters each having two or three ports; wherein n ≥ 2 and m ≥ 1. The first port of each TPC is electrically connected to a respective input port of the n input ports. A parallel connection of the second port of each TPC is electrically connected to the output port. The third port of each TPC is electrically connected to a first port of the two or three ports of each of the m further converters. A second port of the two or three ports of each of the m further converters is electrically connected to an input port of the n input ports or the output port.

Classes IPC  ?

• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 7/04 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques

Abrégé

The present application can be used in the technical field of power sources. Provided are a power conversion apparatus, a control apparatus, and a switch power source. In the technical solution of the present application, a power-down hold-up time extension circuit multiplexes a PFC inductor and a switch unit in a PFC circuit, and the minimum of only one capacitor and one switch unit needs to be added, such that the number of newly added devices can be reduced, thereby reducing the cost.

Classes IPC  ?

• H04L 27/00 - Systèmes à porteuse modulée

Abrégé

1111) to switch on, and controlling the midpoint of at least one second bridge arm to output an alternating current, so as to supply power to an alternating-current load (13). Further disclosed are a vehicle-mounted power system and an electric vehicle. The charger involves both a forward charging function for charging a traction battery and a reverse discharging function for supplying power to an alternating-current load, thereby achieving greatly reduced circuit costs, good application flexibility and good applicability.

Classes IPC  ?

• B60L 53/22 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques

Abrégé

The present application provides a power module, a power supply system, a vehicle and a photovoltaic system. The power module comprises a first power semiconductor chip, a first temperature sensor, a first diode chip and a first circuit board. The first power semiconductor chip has a first output electrode. The first temperature sensor is located in the first power semiconductor chip, a first cathode of the first temperature sensor being electrically connected to the first output electrode. The first diode chip is electrically connected to the first power semiconductor chip, and when the first diode chip generates a reverse recovery current, a voltage is generated between the first output electrode and the first cathode. The first circuit board is used to acquire a first voltage difference between the first output electrode and the first cathode, thereby obtaining a temperature of the first diode chip. The power module of the present application can accurately and rapidly detect the temperatures of the first power semiconductor chip and the first diode chip.

Classes IPC  ?

• G01R 31/26 - Test de dispositifs individuels à semi-conducteurs
• G01R 31/27 - Test de dispositifs sans les extraire physiquement du circuit dont ils font partie, p.ex. compensation des effets dus aux éléments environnants
• H01L 25/07 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe
• H01L 23/48 - Dispositions pour conduire le courant électrique vers le ou hors du corps à l'état solide pendant son fonctionnement, p.ex. fils de connexion ou bornes
• G01K 7/22 - Mesure de la température basée sur l'utilisation d'éléments électriques ou magnétiques directement sensibles à la chaleur utilisant des éléments résistifs l'élément étant une résistance non linéaire, p.ex. une thermistance

Abrégé

The present application relates to the technical field of electric motors, and in particular to an electric motor, a power train and a vehicle. The electric motor comprises a rotating shaft, a stator assembly and a rotor assembly, wherein the stator assembly and the rotor assembly are both sleeved on the rotating shaft; the stator assembly comprises a stator winding and a stator iron core, and the stator winding is located on the stator iron core; the rotor assembly comprises a rotor winding, a rotor iron core and a magnetically conductive body; the rotor iron core is located in the stator iron core, and a first end of the rotor iron core is flush with a first end of the stator iron core; the magnetically conductive body is arranged at a second end of the rotor iron core, and the end of the magnetically conductive body that is away from the rotor iron core is flush with a second end of the stator iron core; the magnetically conductive body comprises a first portion and a second portion; the end of the first portion that is away from the rotating shaft is connected to the second portion; the first portion and the second portion form an accommodating cavity with an opening facing away from the rotor iron core; and an end portion of the rotor winding is located in an accommodating space enclosed by the accommodating cavity and the stator assembly. The electric motor provided by the present application has a relatively high power density.

Classes IPC  ?

• H02K 1/22 - Parties tournantes du circuit magnétique
• H02K 1/12 - Parties fixes du circuit magnétique

Abrégé

An on-board charger, comprising an insulating housing (100) and an on-board charging module (101). In the on-board charging module (101), a bidirectional direct-current conversion circuit (1012) is configured to receive a first direct current transmitted by a direct-current bus (1011) and to output a second direct current by means of a power battery connection port (1001) to supply power to a power battery (12), or configured to receive power supplied by the power battery (12) by means of the power battery connection port (1001) and to output the first direct current; a first bridge arm circuit (1010) is configured to receive an alternating current by means of an alternating current power supply input port (1000) and to output the first direct current, or configured to receive the first direct current and to output a first alternating current by means of an alternating current load power supply port (1002) to supply power to an alternating current load (13); and a second bridge arm circuit (1013) is configured to receive the first direct current and to output a second alternating current by means of the alternating current load power supply port (1002) to supply power to the alternating current load (13), thereby implementing both the function of supplying power to the power battery (12) and the function of supplying power to the alternating current load (13). The on-board charger has a simpler structural layout, high integration, high power supply flexibility, and high applicability. Also disclosed are an on-board power system and an electric vehicle.

Classes IPC  ?

• B60L 53/20 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule
• B60L 1/00 - Fourniture de l'énergie électrique à l'équipement auxiliaire des véhicules à traction électrique

Abrégé

Provided in the present application are a photovoltaic converter and a photovoltaic power generation system. The photovoltaic converter is used for electrically connecting to a first photovoltaic module and a second photovoltaic module, wherein the first photovoltaic module comprises a first positive output end and a first negative output end, and the second photovoltaic module comprises a second positive output end and a second negative output end. The photovoltaic converter comprises a current transformer and a power conversion circuit, wherein the current transformer comprises a magnetic structure, a first positive primary winding, a second positive primary winding, a negative primary winding and a first secondary winding. The three primary windings all run through the magnetic structure and are arranged at intervals. One end portion of one of the two positive primary windings and one end portion of the other positive primary winding are respectively electrically connected to the first positive output end and the second positive output end, and the other end portions of the two positive primary windings are electrically connected to the power conversion circuit. One end portion of the negative primary winding is electrically connected to the two negative output ends, and the other end portion thereof is electrically connected to the power conversion circuit. The first secondary winding is wound on the magnetic structure. A small area of a board is occupied.

Classes IPC  ?

• H02S 40/30 - Composants électriques
• H02S 40/32 - Composants électriques comprenant un onduleur CC/CA associé au module PV lui-même, p.ex. module CA
• H02S 50/00 - Surveillance ou tests de systèmes PV, p.ex. équilibrage de charge ou identification des défauts
• G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe
• G01R 15/18 - Adaptations fournissant une isolation en tension ou en courant, p.ex. adaptations pour les réseaux à haute tension ou à courant fort utilisant des dispositifs inductifs, p.ex. des transformateurs
• H01F 38/30 - Construction

Abrégé

Disclosed in the embodiments of the present application is a power supply device (10) supporting wireless power supply and near-field communication. The power supply device (10) comprises a wireless power supply module (101), a power supply coil (14) and a detection module (102), wherein the wireless power supply module (101) is used for supplying a power supply signal to the power supply coil (14), so as to supply power to an electronic device; and the detection module (102) is used for detecting whether there is a target device in a detection region of the power supply device, and detecting whether the target device is a PICC device. The target device is a device other than the power supply device and the electronic device. In response to detection information, which is output by the detection module (102), an operation mode of the power supply device (10) can be switched from a power supply mode to a PICC detection mode or a PICC protection mode. When the power supply device (10) respectively operates in the power supply mode, the PICC detection mode and the PICC protection mode, the power of the power supply signal, which is supplied to the power supply coil by the wireless power supply module, sequentially decreases. By using the embodiments of the present application, the impact of PICC detection on wireless power supply can be reduced, thereby ensuring the power supply efficiency.

Classes IPC  ?

• H04B 5/00 - Systèmes de transmission à induction directe, p.ex. du type à boucle inductive

Abrégé

The present application provides a photovoltaic system and method for equivalent impedance measurement of a multi-machine photovoltaic module, and a photovoltaic power conversion device. The photovoltaic module is connected to a power grid by means of the photovoltaic power conversion device. The photovoltaic system simultaneously performs synchronous phase shift impedance detection on N (N is greater than or equal to two) photovoltaic modules to generate alternating current measurement signals of the N photovoltaic modules, the amplitudes, within one cycle, of the alternating current measurement signals for the N photovoltaic modules being superimposed and canceling one another out. The alternating current measurement signals of the N photovoltaic modules are loaded into the respective photovoltaic power conversion device thereof, and then an output voltage and an output current of the N photovoltaic modules at a corresponding frequency of the respective alternating current measurement signals is acquired, thereby simultaneously determining the equivalent impedance of the N photovoltaic modules. The mutual superimposition of the alternating current measurement signals of the N photovoltaic modules does not cause fluctuation that exceeds a threshold range of output power of the photovoltaic system, and the equivalent impedance of a plurality of photovoltaic modules in the photovoltaic system may be simultaneously measured during an operation process of the photovoltaic system, thereby improving measurement efficiency and having strong adaptability.

Classes IPC  ?

• H02S 50/10 - Tests de dispositifs PV, p.ex. de modules PV ou de cellules PV individuelles
• G01R 27/08 - Mesure de la résistance par mesure à la fois de la tension et de l'intensité

Abrégé

The present application provides a disc-type motor and an assembling method therefor, a powertrain and a vehicle. The disc-type motor comprises a rotating shaft, and a first rotor, a stator and a second rotor which are sleeved on the rotating shaft, wherein the first rotor, the stator and the second rotor are sequentially arranged at intervals, the stator is rotatably connected to the rotating shaft, the rotating shaft comprises a first shaft body and a second shaft body which are detachably connected, the first shaft body is fixedly connected to the first rotor, and the second shaft body is fixedly connected to the second rotor. Before assembly, the first rotor and the first shaft body are subjected to dynamic balance adjustment, the second rotor and the second shaft body are subjected to dynamic balance adjustment, and then the first shaft body and the second shaft body are connected and the stator is installed, so that the accuracy of dynamic balance adjustment is improved and the convenience of assembly is increased.

Classes IPC  ?

• H02K 16/02 - Machines avec un stator et deux rotors
• H02K 7/00 - Dispositions pour la mise en œuvre d'énergie mécanique associées structurellement aux machines dynamo-électriques, p.ex. association structurelle avec des moteurs mécaniques d'entraînement ou des machines dynamo-électriques auxiliaires
• H02K 15/16 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques Équilibrage des rotors
• H02K 15/00 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques
• H02K 15/02 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques
• H02K 15/03 - Procédés ou appareils spécialement adaptés à la fabrication, l'assemblage, l'entretien ou la réparation des machines dynamo-électriques des corps statoriques ou rotoriques comportant des aimants permanents
• H02K 15/14 - Enveloppes; Enceintes; Supports
• H02J 7/04 - Régulation du courant ou de la tension de charge

Abrégé

Provided in the embodiments of the present application are a stator structure, an axial flux electric motor, a power train and a vehicle. The stator structure comprises at least a stator assembly, a stator outer diameter support and a stator inner diameter support, which are coaxially arranged, wherein in the radial direction of the stator assembly, the stator outer diameter support is located outside the stator assembly, and the stator inner diameter support is located inside the stator assembly; the stator assembly comprises a stator iron core and at least two groups of armature windings; and the at least two groups of armature windings are distributed at intervals in the circumferential direction of the stator iron core and are each wound on the stator iron core. The stator structure further comprises at least two fixing members, which are distributed at intervals in the circumferential direction of the stator iron core, wherein each fixing member is located between every two adjacent groups of armature windings, and passes through the stator outer diameter support, the stator iron core and the stator inner diameter support in the radial direction of the stator iron core, so as to fix the stator outer diameter support, the stator iron core and the stator inner diameter support.

Classes IPC  ?

• H02K 1/12 - Parties fixes du circuit magnétique
• H02K 1/18 - Moyens de montage ou de fixation des parties magnétiques fixes sur ou aux structures constituant le stator
• H02K 1/20 - Parties fixes du circuit magnétique avec des canaux ou des conduits pour l'écoulement d'un agent de refroidissement

Abrégé

Provided is a hybrid drive system. The hybrid drive system comprises an engine (100), a gearbox (400), a driving electric motor (200) and a generator (300). The gearbox (400) comprises a first input end (401), a second input end (402) and a first output end (403), the first input end (401) and the second input end (402) both being in transmission connection with the first output end (403), an output shaft (101) of the engine (100) being in transmission connection with the first input end (401), and the first output end (403) is used for providing power for wheels (12); and an output shaft (201) of the driving electric motor (200) is in transmission connection with the second input end (402), the driving electric motor (200) is used for outputting power to the second input end (402), and the driving electric motor (200) and the engine (100) are located at the same side of the gearbox (400) in an axial direction of the engine (100); and an input shaft (301) of the generator (300) is in transmission connection with the output shaft (101) of the engine (100). The size of the hybrid drive system in an axial direction can be reduced by arranging the engine and the driving electric motor on the same side of the gearbox, such that the hybrid drive system has a small size and can be mounted in a narrow mounting position in a vehicle. Further provided are a gearbox and a vehicle.

Classes IPC  ?

• B60K 6/40 - Agencement ou montage de plusieurs moteurs primaires différents pour une propulsion réciproque ou commune, p.ex. systèmes de propulsion hybrides comportant des moteurs électriques et des moteurs à combustion interne les moteurs primaires étant constitués de moteurs électriques et de moteurs à combustion interne, p.ex. des VEH caractérisés par des appareils, des organes ou des moyens spécialement adaptés aux VEH caractérisés par l'assemblage ou la disposition relative des organes
• F16H 37/00 - Combinaisons de transmissions mécaniques non prévues dans les groupes

Abrégé

Provided in the present application are a power module and a manufacturing method therefor, an electric motor driver, a power assembly, and a vehicle. The power module comprises a first substrate and a second substrate, which are oppositely arranged, a first heat sink and a second heat sink, which are oppositely arranged, and a chip, wherein the chip is arranged between the first heat sink and the second heat sink, which are oppositely arranged; each of the first heat sink and the second heat sink is connected to the chip by means of sintering or welding; and the first substrate and the second substrate are respectively connected to the first heat sink and the second heat sink by means of welding or sintering. The first heat sink and the second heat sink have high electric conduction and heat conduction characteristics, so that heat from the chip is rapidly and uniformly conducted to the first substrate and the second substrate, a reduction in the transient and steady temperatures of the chip can be facilitated, and more current can flow under the same chip area, thereby effectively improving the power density of the chip.

Classes IPC  ?

• H01L 23/367 - Refroidissement facilité par la forme du dispositif

Abrégé

Provided in the embodiments of the present application are a multi-level direct current converter, a voltage control method for a flying capacitor, and a control apparatus. The multi-level direct current converter comprises a controller, a flying capacitor, two switching transistor groups and an inductor. The control method for a flying capacitor comprises: in response to the absolute value of a difference value between a sampling voltage of and a reference voltage of a flying capacitor being greater than a first threshold value, adjusting, on the basis of the magnitude of an inductor current, a duty cycle difference between first switching transistors in the two switching transistor groups or a phase difference between carriers of the first switching transistors in the two switching transistor groups. The embodiments of the present application can be used to control the voltage of the flying capacitor, thus improving the operation stability of the multi-level direct current converter.

Classes IPC  ?

• H02M 3/158 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs avec commande automatique de la tension ou du courant de sortie, p.ex. régulateurs à commutation comprenant plusieurs dispositifs à semi-conducteurs comme dispositifs de commande finale pour une charge unique
• H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p.ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

A power conversion apparatus (30), a charging pile (201), an on-board charger and an electric vehicle (10). The power conversion apparatus (30) comprises: a first capacitor branch (31), comprising at least one electrolytic capacitor (C1, C2) used for performing stabilization processing on voltage received by the power conversion apparatus (30) so as to obtain a first voltage; a second capacitor branch (32) comprising a plurality of series-connected thin film capacitors (C3) used for filtering the first voltage and dividing the filtered first voltage to obtain a plurality of second voltages, wherein each thin film capacitor (C3) is allocated a second voltage; direct current converters (33) in one-to-one correspondence with the thin film capacitors (C3), an input end of each direct current converter (33) being connected in parallel to the corresponding thin film capacitor (C3); the direct-current converters (33) being used for performing voltage conversion on the second voltages outputted by the thin-film capacitors (C3).

Classes IPC  ?

• B60L 53/31 - Colonnes de charge spécialement adaptées aux véhicules électriques
• B60L 53/22 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques caractérisés par des convertisseurs situés dans le véhicule - Détails de structure ou aménagements des convertisseurs de charge spécialement adaptés pour recharger des véhicules électriques
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

The present disclosure relates to a semiconductor device. The semiconductor device comprises:a substrate comprising a first wide-bandgap semiconductor material; a first region of a first conductivity type and a second region of a second conductivity type arranged above the substrate, where the first region and the second region comprise a second wide-bandgap semiconductor material, and where the first region and the second region form a Zener PN diode configured as an anti-fuse. A corresponding method for producing the semiconductor device is also provided.

Classes IPC  ?

• H01L 29/06 - Corps semi-conducteurs caractérisés par les formes, les dimensions relatives, ou les dispositions des régions semi-conductrices
• H01L 29/20 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV
• H01L 29/205 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, uniquement des composés AIIIBV comprenant plusieurs composés dans différentes régions semi-conductrices
• H01L 29/267 - Corps semi-conducteurs caractérisés par les matériaux dont ils sont constitués comprenant, à part les matériaux de dopage ou autres impuretés, des éléments couverts par plusieurs des groupes , , , , dans différentes régions semi-conductrices
• H01L 21/329 - Procédés comportant plusieurs étapes pour la fabrication de dispositifs du type bipolaire, p.ex. diodes, transistors, thyristors les dispositifs comportant une ou deux électrodes, p.ex. diodes
• H01L 29/866 - Diodes Zener

Abrégé

The disclosure relates to a wireless power transmitter (501) for increasing uniformity of a generated electromagnetic field (503) distribution in a direction perpendicular to a planar plane (401a) and for powering at least one electronic device (507) from the generated electromagnetic field (503). The wireless power transmitter (501) comprises: a transmitter coil (400) comprising at least one coil turn (401 b) for generating an electromagnetic field (503). At least one coil turn of the transmitter coil (400) extends along a plurality of first linear sections (405a, 405b, 405c, 405d) and a plurality of second linear sections (406a, 406b, 406c, 406d) electrically connected with each other. The first linear sections (405a, 405b, 405c, 405d) are arranged to enclose a planar plane (401a) of the transmitter coil (400) and the second linear sections (406a, 406b, 406c, 406d) are formed to extend angularly to the planar plane (401a).

Classes IPC  ?

• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p.ex. de l'alignement 
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques

Abrégé

The present disclosure is related to the field of semiconductor devices and packaging, and to heat transfer in a semiconductor package. The present disclosure provides a semiconductor package (1) comprising: a thermally conductive layer (2) and semiconductor devices (4, 6, 8) thermally connected with the thermally conductive layer (2). The semiconductor devices (4, 6, 8) produce heat, which the thermally conductive layer (2) dissipates at least partly. Some heat is transferred from a semiconductor device (6) to another semiconductor device (4, 8). The semiconductor package (1) further comprises a temperature balancing element (20) arranged in thermal connection i) with the thermally conductive layer (2) and ii) with the other semiconductor device(s) (6, 8) so as to reduce a temperature gradient between the semiconductor devices (4, 6, 8).

Classes IPC  ?

• H01L 23/373 - Refroidissement facilité par l'emploi de matériaux particuliers pour le dispositif
• H01L 25/065 - Ensembles consistant en une pluralité de dispositifs à semi-conducteurs ou d'autres dispositifs à l'état solide les dispositifs étant tous d'un type prévu dans le même sous-groupe des groupes , ou dans une seule sous-classe de , , p.ex. ensembles de diodes redresseuses les dispositifs n'ayant pas de conteneurs séparés les dispositifs étant d'un type prévu dans le groupe

Abrégé

The disclosure relates to the field of wireless power transfer. In particular, the disclosure relates to a wearable wireless power receiver, a footwear comprising such wearable wireless power receiver, a wearable wireless power receiver arrangement, a wearable coupled resonator array comprising such wearable wireless power receiver, a walkable power transmitter and corresponding methods. The disclosure particularly relates to a wireless power system for dynamic transfer environments. A wearable wireless power receiver (105), that may be configured for location at a lower limb (111) of a person (110), comprises: a carrier substrate (1103); and an electrically conductive material (106.a) mounted at the carrier substrate (1103). The electrically conductive material (106.a) is forming at least one receiver coil (106). The carrier substrate (1103) with the mounted electrically conductive material (106.a) is formed to adapt to the footwear (111) of the person (110). The at least one receiver coil (106) is configured to receive an electromagnetic field (104).

Classes IPC  ?

• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p.ex. de l'alignement 

Abrégé

The disclosure relates to the field of wireless power transfer. In particular, the disclosure relates to a wearable wireless power receiver, a wearable wireless power receiver arrangement comprising such wearable wireless power receiver, a wearable coupled resonator array comprising such wearable wireless power receiver, a ceiling-mountable power transmitter and a method for powering a wearable electronic device. The disclosure particularly relates to wireless power delivery in dynamic environments. A wearable wireless power receiver (105) that may be configured for location at the head of a person (110), comprises: a carrier substrate (1104); an electrically conductive material (106.a) mounted at the carrier substrate (1104), the electrically conductive material (106.a) forming at least one receiver coil (106), wherein the carrier substrate (1104) with the mounted electrically conductive material (106.a) is formed to adapt to a head area of the person (110), wherein the at least one receiver coil (106) is configured to receive an electromagnetic field (104).

Classes IPC  ?

• H02J 50/00 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception
• H02J 50/90 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la détection ou l'optimisation de la position, p.ex. de l'alignement 
• H02J 50/70 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique mettant en œuvre la réduction des champs de fuite électriques, magnétiques ou électromagnétiques

Abrégé

The present application relates to the technical field of electric power, and in particular to a scheduling method and device for an energy storage and charging system. The method comprises: when at least one charging device charges an electric device, a control device acquires, according to a first acquisition cycle, a first power with which the energy storage and charging system acquires electric energy from a power grid, wherein the first acquisition cycle is determined on the basis of the acquisition cycle of a real-time scheduling instruction, and is smaller than the acquisition cycle of the real-time scheduling instruction; and when the first power is not less than a power threshold, the control device increases the output power with which multiple energy storage devices output electric energy to the charging device and/or reduces the charging power with which at least one charging device charges the electric device, thereby lowering the first power. The method can avoid or suppress peak grid power demand in order of minutes, thereby effectively avoiding excessively high levels of demand, and reducing the operation cost of the energy storage and charging system.

Classes IPC  ?

• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie

Abrégé

Embodiments of the present application disclose a driver circuit of a valley-fill circuit, a power supply module and an electronic device. An input voltage end of the driver circuit is used for receiving a power supply provided by a primary winding or auxiliary winding of a direct-current conversion circuit, and a reference voltage end of the driver circuit is used for connecting to a power supply of an output end of the full-bridge rectifier circuit. The potential of the power supply provided by the primary winding or auxiliary winding of the direct-current conversion circuit is greater than the potential of the output end of the full-bridge rectifier circuit. The driver circuit may operate normally when the power supply module has a light load, thereby improving the stability of the power supply module.

Classes IPC  ?

• H02M 7/219 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant continu sans possibilité de réversibilité par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrode de commande utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs dans une configuration en pont
• H02M 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques
• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

Provided in the present application are a power line communication (PLC) method and apparatus, which can be applied to a first node in a PLC system that comprises at least three nodes, wherein the at least three nodes are in a full-duplex working mode. The method comprises: a first node receiving first information from a second node, wherein the second node is any node, other than the first node, in at least three nodes; and according to the priority of the second node and/or the priority of the first information, the first node determining whether to interrupt the sending of second information, wherein the second information is information which is currently sent by the first node. By means of the solution of the present application, conflicts can be prevented from occurring in information of different nodes, so as to implement rapid communication between a plurality of nodes, thereby improving the communication efficiency of a PLC system.

Classes IPC  ?

• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• H04B 3/04 - Systèmes à ligne de transmission - Détails Égalisation
• H04L 47/2425 - Trafic caractérisé par des attributs spécifiques, p.ex. la priorité ou QoS pour la prise en charge de spécifications de services, p.ex. SLA
• H04L 5/14 - Fonctionnement à double voie utilisant le même type de signal, c. à d. duplex

Abrégé

Provided in the present application are a DC/DC conversion circuit, a DC/DC converter and a power supply device. The DC/DC conversion circuit comprises a first end, a second end and a first resonance unit, the first resonance unit being provided with a first port, a second port, a third port and a fourth port, the first port being connected to the first end of the DC/DC conversion circuit, the second port and the third port being connected to the second end of the DC/DC conversion circuit, the fourth port being connected to a reference ground of the DC/DC conversion circuit; one end of a first switching bridge leg of the first resonance unit being connected to the first port, the other end of the first switching bridge leg of the first resonance unit being connected to the second port; one end of a second switching bridge leg of the first resonance unit being connected to the third port, the other end of the second switching bridge leg of the first resonance unit being connected to the fourth port; and a first capacitor of the first resonance unit being connected between the third port and the fourth port. By implementing the present application, a loss can be reduced, realizing high conversion efficiency.

Classes IPC  ?

• H02M 3/07 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu sans transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des résistances ou des capacités, p.ex. diviseur de tension utilisant des capacités chargées et déchargées alternativement par des dispositifs à semi-conducteurs avec électrode de commande

Abrégé

Provided in the present application are a control circuit for a power source module, and a power source module and an electronic device. The power source module comprises an asymmetrical half-bridge flyback converter and a rectification circuit, wherein the asymmetrical half-bridge flyback converter comprises a main power transistor, an auxiliary power transistor and a transformer; the control circuit is used for controlling the main power transistor and the auxiliary power transistor to alternately turn on and turn off, such that the asymmetrical half-bridge flyback converter receives an input voltage and supplies power to a load, and the control circuit is used for: after the auxiliary power transistor is turned off and before the main power transistor is turned on, controlling the rectification circuit to discharge electricity to the transformer within a preset duration, and after the rectification circuit stops discharging electricity to the transformer, according to a comparison result between a voltage difference value between a drain electrode and a source electrode of the main power transistor, and a preset voltage value, controlling the main power transistor to turn on. By means of implementing the embodiments of the present application, the switching loss of a main power transistor can be reduced.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation

Abrégé

Provided in the present application are a heat exchange device and a heat exchange system. The heat exchange device has a first heat exchange mode and comprises a shell, a partition plate, an evaporator, and a compressor, and the partition plate divides the inner space of the shell into an inner circulation cavity and an outer circulation cavity; the evaporator and the compressor are positioned in the inner circulation cavity; a first valve set is disposed between an inlet of the compressor and an outlet of the evaporator, and when heat exchange is conducted in the first heat exchange mode, the evaporator and the compressor communicate by means of the first valve set. In the present application, the compressor is arranged in the inner circulation cavity, so that the temperature difference between the compressor and the evaporator is small, reducing the risk of compressor liquid shock.

Classes IPC  ?

• F25B 41/40 - Agencements de conduites de fluide
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

Provided in the present application are a power supply device and system, and a method. The power supply device comprises a control module, an electromagnetic-wave generation module, a feed-port selection module, and a radio-frequency antenna module, wherein the feed-port selection module comprises a plurality of feed-port selection switches; and the radio-frequency antenna module comprises a plurality of input feed ports and a radio-frequency unit. The plurality of input feed ports are correspondingly connected to the plurality of feed-port selection switches on a one-to-one basis. The control module may select, according to a signal sent by an electronic device, an input feed port to transmit an electromagnetic wave to the electronic device, such that the efficiency of power supply to the electronic device by using an electromagnetic wave is improved. The power supply device provided in the present application has a low cost and a concise control process, and can guarantee the freedom of power supply to an electronic device.

Classes IPC  ?

• H02J 50/23 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant des micro-ondes ou des ondes radio fréquence caractérisés par le type d'antennes de transmission, p.ex. les antennes-réseau directives ou les antennes Yagi
• H02J 50/40 - Circuits ou systèmes pour l'alimentation ou la distribution sans fil d'énergie électrique utilisant plusieurs dispositifs de transmission ou de réception

Abrégé

A wear compensation mechanism, comprising a gain bridge (4), a ratchet mechanism (3), an adjustment lever (5), and a friction plate (6), wherein each of the ratchet mechanism (3), the adjustment lever (5), and the friction plate (6) is mounted on the gain bridge (4), one end of the adjustment lever (5) is connected to the ratchet mechanism (3), the other end of the adjustment lever (5) is brought into contact with the friction plate (6), and a side of the friction plate (6) facing away from the adjustment lever (5) is used for being brought into contact with a friction disc (30). During braking, the gain bridge (4) can drive the friction plate (6) to move close to the friction disc (30) and cause the friction plate (6) to come into contact with the friction disc (30), the ratchet mechanism (3) can generate a mechanism movement, and the adjustment lever (5) is stationary relative to the gain bridge (4); and after the braking, the gain bridge (4) can drive the friction plate (6) to move away from the friction disc (30), and the ratchet mechanism (3) can generate a reverse mechanism movement to drive the adjustment lever (5) to push the friction plate (6), such that the friction plate (6) moves towards the friction disc (30). The wear compensation mechanism can realize brake clearance compensation, ensure that an initial brake clearance is within a suitable range, avoid excess brake response time, and ensure brake sensitivity. A disc brake and a vehicle are further provided.

Classes IPC  ?

• F16D 65/52 - Dispositifs de réglage mécaniques agissant automatiquement dans une direction pour le réglage d'un jeu excessif

Abrégé

The present application provides a charging device and a charging control method, which are used for effectively reducing circuit costs of the charging device and effectively simplifying the control flow of series connection or parallel connection between multiple outputs of a power converter by using fewer relays in the case of increasing the output voltage range and output power of the power converter. The device comprises a first power converter, a first relay, and a second relay, wherein the first power converter comprises a first output end and a second output end. The plurality of output ends of the first power converter can be controlled to be connected in series or in parallel by controlling the on/off state of the first relay and the second relay.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• B60L 53/00 - PROPULSION DES VÉHICULES À TRACTION ÉLECTRIQUE; FOURNITURE DE L'ÉNERGIE ÉLECTRIQUE À L'ÉQUIPEMENT AUXILIAIRE DES VÉHICULES À TRACTION ÉLECTRIQUE; SYSTÈMES DE FREINS ÉLECTRODYNAMIQUES POUR VÉHICULES, EN GÉNÉRAL; SUSPENSION OU LÉVITATION MAGNÉTIQUES POUR VÉHICULES; CONTRÔLE DES PARAMÈTRES DE FONCTIONNEMENT DES VÉHICULES À TRACTION ÉLECTRIQUE; DISPOSITIFS ÉLECTRIQUES DE SÉCURITÉ POUR VÉHICULES À TRACTION ÉLECTRIQUE Échange d'éléments d’emmagasinage d'énergie dans les véhicules électriques

Abrégé

The present application provides a power supply module, a control circuit, and an electronic device. The power supply module is used for receiving alternating current input from an alternating-current power supply. The power supply module comprises a rectifying circuit, a valley-fill PFC circuit, a controllable switch, and a control circuit. The controllable switch is connected between a capacitor of the valley-fill PFC circuit and a reference ground and is connected in series to a diode. The control circuit controls, according to the type of the alternating current, the controllable switch to be turned on or turned off. According to the present application, when the power supply module receives low-voltage alternating current, the valley-fill PFC circuit stops running, so that the power conversion efficiency of the power supply module is improved.

Classes IPC  ?

• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs

Abrégé

The present application provides a control circuit of a power module, the power module and an electronic device. The power module comprises an active clamp flyback converter circuit and a rectifying circuit. The active clamp flyback converter circuit comprises a main power transistor, an auxiliary power transistor, and a transformer. The control circuit is used for controlling the active clamp flyback converter circuit to work in a discontinuous conduction mode, and after the auxiliary power transistor is turned off and before the main power transistor is conducted, controlling the rectifying circuit to discharge to the transformer within a preset duration; and after the rectifying circuit stops discharging to the transformer, controlling the main power transistor to be conducted according to the comparison result of a voltage difference between a drain and a source of the main power transistor and a preset voltage value. By implementing embodiments of the present application, the switching loss of the main power transistor can be reduced.

Classes IPC  ?

• H02M 3/335 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant continu avec transformation intermédiaire en courant alternatif par convertisseurs statiques utilisant des tubes à décharge avec électrode de commande ou des dispositifs à semi-conducteurs avec électrodes de commande pour produire le courant alternatif intermédiaire utilisant des dispositifs du type triode ou transistor exigeant l'application continue d'un signal de commande utilisant uniquement des dispositifs à semi-conducteurs
• H02M 1/00 - APPAREILS POUR LA TRANSFORMATION DE COURANT ALTERNATIF EN COURANT ALTERNATIF, DE COURANT ALTERNATIF EN COURANT CONTINU OU VICE VERSA OU DE COURANT CONTINU EN COURANT CONTINU ET EMPLOYÉS AVEC LES RÉSEAUX DE DISTRIBUTION D'ÉNERGIE OU DES SYSTÈMES D'ALI; TRANSFORMATION D'UNE PUISSANCE D'ENTRÉE EN COURANT CONTINU OU COURANT ALTERNATIF EN UNE PUISSANCE DE SORTIE DE CHOC; LEUR COMMANDE OU RÉGULATION - Détails d'appareils pour transformation