Abrégé

A micro inverter having a plurality of independent inputs and a photovoltaic system are provided. The micro inverter includes multiple isolated DC-DC converters and a DC-AC converter. Each isolated DC-DC converter of the isolated DC-DC converters includes an inverter H-bridge, a transformer and a voltage-multiplying rectifier. An input terminal of the inverter H-bridges is configured to connect to a direct-current power supply. A secondary winding of the transformer is connected to an input terminal of the voltage-multiplying rectifier. An output terminal of the voltage-multiplying rectifier is connected to an input terminal of the DC-AC converter. A leakage inductor or an external inductor of the transformer forms series resonance along with a capacitor in the voltage-multiplying rectifier.

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
• 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 7/797 - 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 avec 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

Abrégé

A self-checking-based fire-fighting air intake and discharge control system, which is applied to measure a combustible gas in an energy storage container (40). The fire-fighting air intake and discharge control system comprises: a gas measurement module (11), which is used for measuring the concentration of a combustible gas in an energy storage container (40); an air intake and discharge module (12), which is used for controlling the circulation of the gas in the energy storage container (40); and a control module (10), which is used for controlling the operation of the gas measurement module (11) and the operation of the air intake and discharge module (12), and controlling, when the concentration of the combustible gas exceeds a preset concentration threshold value, the air intake and discharge module (12) to discharge the combustible gas. The fire-fighting air intake and discharge control system can automatically detect a fault problem of the system and feed back same in a timely manner, and can also measure multiple environmental factors; and the system regularly performs self-checking, and stores and uploads data, and an operation and maintenance person can retrieve operation data, predetermines an on-site operation situation, and maintains the system and a device.

Classes IPC  ?

• G05B 19/042 - Commande à programme autre que la commande numérique, c.à d. dans des automatismes à séquence ou dans des automates à logique utilisant des processeurs numériques

Abrégé

The present application discloses a buck-boost converter and a power supply system. The converter comprises a controller, a controllable switching transistor, a freewheeling diode and a boost circuit. A first terminal and a second terminal of the controllable switching transistor are respectively connected to the positive input terminal of the buck-boost converter and the positive input terminal of the boost circuit. The anode and the cathode of the freewheeling diode are respectively connected to the negative input terminal of the buck-boost converter and the second terminal of the controllable switching transistor. The controller is used for controlling the buck-boost converter to work in a buck mode when the input voltage of the buck-boost converter is greater than a preset voltage, and controlling the buck-boost converter to work in a boost mode when the input voltage of the buck-boost converter is smaller than the preset voltage. Due to the existence of the freewheeling diode in the boost circuit, when the direct-current input terminal is short-circuited, the freewheeling diode in the boost circuit bears reverse voltage blocking, so as to avoid short circuiting of the output terminal of the buck-boost converter, thereby protecting the buck-boost converter.

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 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
• 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 7/44 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques
• 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 loss-balanced modulation method for ANPC topology and a converter. The loss-balanced modulation method for ANPC topology comprises: after determining a positive half cycle and a negative half cycle of an alternating-current (AC) side voltage of the ANPC topology, for the same half cycles, an inner tube and an outer tube of a corresponding half bridge arm in the ANPC topology alternately performing turn-off actions so as to achieve a corresponding zero-level output state. On and off times of the inner tube and the outer tube are enabled to be similar, so that switching loss of the inner tube and the outer tube can be shared, and the inner tube and the outer tube are alternately turned on and off, so that loss balance between the inner and outer tubes can be implemented.

Classes IPC  ?

• 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

Abrégé

A conversion power supply and an autonomous electric energy replenishment method for an energy storage system are provided. An output terminal of the power supply module is connected to a second side of a first DC-DC converter through an energy storage element. A first side of the first DC-DC converter is connected to battery clusters of the energy storage system through a DC interface of the conversion power supply, so that under control by a conversion power supply controller, in a case that a voltage of a battery cluster is lower than a preset threshold, the first DC-DC converter receives the electric energy on the second side, and transmit the electric energy to the first side of the first DC-DC converter, to realize a electric energy replenishment function for at least one of the battery clusters and prevent battery failure due to over-discharge.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• 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 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 7/537 - 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

Produits et services

Lubricating oil; petroleum; industrial oil; fuel; industrial wax; candles; dust removing preparations; nuclear power; electricity; electrical energy. Testing apparatus for testing batteries; ultracapacitors for energy storage; photovoltaic inverters; batteries, electric; photovoltaic apparatus for the production of electricity; battery charge devices; lithium-ion batteries; charging stations for electric vehicles; photovoltaic apparatus and installations for generating solar electricity; battery charging devices for motor vehicles. Technical design services relating to electricity plants; providing scientific information, advice and consultancy relating to carbon offsetting; engineering services; technological consultancy in the field of alternative energy generation; technological research; research in the field of energy; construction engineering services [construction design]; creating control programs for electrically operated controls and drive components; computer programming; software as a service [SaaS].

Abrégé

A single-stage multi-path direct current access converter and a control method thereof are provided. The single-stage multi-path direct current access converter includes an AC-side conversion circuit; at least two DC-side conversion circuits; and transformers corresponding to the at least two DC-side conversion circuits. AC sides of the at least two DC-side conversion circuits are respectively connected to primary windings of the corresponding transformers; secondary windings of the transformers are connected in parallel to a first side of the AC-side conversion circuit; each of the at least two DC-side conversion circuits is configured to invert DC power received by the DC-side conversion circuit, or to rectify AC power received by the DC-side conversion circuit; and the AC-side conversion circuit is configured to perform AC frequency conversion.

Classes IPC  ?

• 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
• 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

Abrégé

A plug for a connector and the connector are provided. The plug includes an elastic main body, the elastic main body is provided with multiple through holes for cables to pass through; the plug includes a support body, the support body includes a first support body embedded in a middle part of the elastic main body, the through holes are provided around the first support body, and the support body has a hardness greater than that of the elastic main body. In this application, due to the elastic material characteristics of the elastic main body, when the claw members are squeezed by the first nut to contract and then the claw members force the plug tightly from periphery, the plug can generate a certain deformation to be tightly clamped by the claw members and press the cables from the outside to the middle part.

Classes IPC  ?

• H01R 13/502 - Socles; Boîtiers composés de différentes pièces
• H01R 13/512 - Socles; Boîtiers composés de différentes pièces assemblées par une vis ou par des vis

Abrégé

Electrical equipment is provided. The electrical equipment includes a box body, a device, and a sealing member having both an electromagnetic shielding function and a sealing function. The device is detachably fixed on the box body, the sealing member is disposed between the box body and the device, and the base surface of the device can be attached to the installation surface of the box body, such that the sealing member can ensure the sealing installation of the box body and the device, and can also enable the base surface of the device to be closely attached to the installation surface of the box body to ensure the electromagnetic shielding function of conductive contact between the box body and the device.

Classes IPC  ?

• H05K 9/00 - Blindage d'appareils ou de composants contre les champs électriques ou magnétiques

Produits et services

Calculating machines; Computer programs, recorded; Computer software platforms, recorded or downloadable; Data processing apparatus; Computer programs, downloadable; Computer software, recorded; Electro-dynamic apparatus for the remote control of signals; Apparatus for transmission of communication; Converters, electric; Inverters [electricity]; Photovoltaic inverters; Inverters for power supply; Remote control apparatus; Semiconductors; Electrical adapters; Electric apparatus for commutation; Direct current converters; Current converters; Automatic apparatus for distribution of electric power; Automatic electric power storage apparatus; Electric control devices for energy management. Engineering design services; Technological research; Research in the field of energy; Technological consulting services in the field of alternative energy generation; Technical design and planning of power stations; Providing scientific information, advice and consultancy relating to carbon offsetting; Development of construction projects; Software as a service [SaaS]; Computer programming; Creation of control programs for electric operation control and drive modules; Consultancy in the field of energy-saving; Research in the field of artificial intelligence technology; Providing scientific information, advice and consultancy relating to net zero emissions; Electrical safety research; Scientific research in the field of electricity; Computer software design; Providing online non-downloadable computer software; Installation, repair and maintenance of computer software; Development and creation of computer programmes for data processing; Data conversion of electronic information.

Abrégé

Disclosed in the present application are a power converter and an automatic dust cleaning method. The power converter comprises a power semiconductor device, a heat sink, a fan and a controller, wherein the heat sink comprises a heat sink substrate and a heat sink fin; the power semiconductor device is fitted on the heat sink substrate; an air inlet mesh, the fan, the heat sink and an air outlet mesh are sequentially arranged in a box body of the power converter; air ducts are formed between the fan and the heat sink and between the heat sink and the air outlet mesh; and the controller is configured to control, when the power converter is in a non-grid-connected state, the fan to run backwards for self-cleaning of the power converter. Since the present application implements, when the power converter is in the non-grid-connected state, control over the fan for self-cleaning of the power converter, normal operation of the power converter is not affected, such that the operating efficiency of the power converter is not reduced.

Classes IPC  ?

• 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 cabinet assembly of an energy storage apparatus, and an energy storage apparatus having same. The cabinet assembly (1) comprises a body (40), a first wiring assembly (10), a second wiring assembly (20), and a third wiring space. A first chamber and a second chamber are provided in the body (40); the first wiring assembly (10) is fixed to an inner wall of the body (40), a first wiring space is provided in the first wiring assembly (10), the first wiring space is provided with a first wiring hole (15) located in the first chamber, and a fire-fighting cable is adapted to be electrically connected to a fire-fighting device through the first wiring hole (15); the second wiring assembly (20) is fixed to the inner wall of the body (40), and the second wiring assembly (20) is internally provided with a second wiring space for guiding wiring of a communication cable which is electrically connected to a battery; and the third wiring space is located in the second chamber, each of the first wiring space and the second wiring space is in communication with the third wiring space, and each of the fire-fighting cable and the communication cable is electrically connected to an electrical element. The cabinet body assembly can achieve threading hiding of an exposed wire, such that the overall wire arrangement is simpler, and the risk caused by faults of the exposed wire is avoided.

Classes IPC  ?

• H02B 1/32 - Montage de dispositifs à l'intérieur de ces enveloppes
• H02B 1/20 - Schémas de barres omnibus ou d'autres fileries, p.ex. dans des armoires, dans les stations de commutation

Abrégé

Provided are an off-grid start method and system for a new energy power generation system. The method includes: gradually boosting the voltage of a master according to a plurality of preset voltage given values, and slaves determining, by means of measuring a voltage of the load of a system, a target voltage given value used by the master; and the master determining, by means of monitoring an output current of the master itself, that a slave is successfully connected in parallel, and then continuing to boost the output voltage until all the slaves run in parallel. Therefore, according to the solution, no upper-layer synchronous control is required during a black-start process, and no communication between a master and slaves is required.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• 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 in the present application are a control method and control circuit for a bidirectional resonant direct-current converter. According to the control method, after it is detected that a secondary-side resonant current is commutated, corresponding switch tubes in bridge arms of a secondary-side circuit are controlled to respectively delay for a corresponding period of time and then switch off. After the switch tubes are switched off, the current is commutated to anti-parallel diodes or body diodes of complementary switch tubes in the same bridge arms, and therefore, after a corresponding dead time elapses, the complementary switch tubes in the bridge arms of the secondary-side circuit are controlled to turn on, such that each switch tube in the secondary-side circuit has, only in the dead time, an operation condition where a drive is not turned on and thus the current flows reversely. In this way, the turn-on loss is reduced. Moreover, since each delay time is determined according to an input electrical parameter and/or an output electrical parameter of the bidirectional resonant direct-current converter and a required gain, the required gain can also be realized when a switching frequency is set to be greater than a resonant frequency. Therefore, a frequency adjustment range of a wide-voltage output occasion can be reduced, which has an obvious effect for improving the switching frequency.

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 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 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 1/00 - 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 control method and control circuit for a bidirectional resonant direct-current converter. In the control method, when the reversal of a secondary side resonant current is detected, corresponding switch tubes in a secondary side circuit are controlled to delay for a period of time before being switched off, which is different from the case in the conventional synchronous rectification technology where switching off is performed before reversal, such that it is possible to prevent anti-parallel diodes of these switch tubes from being switched on at a moment close to a zero crossing moment, thus avoiding the problems such as low-frequency oscillation caused when a switch tube having an anti-parallel diode with poor reverse recovery characteristic, such as a silicon MOSFET, is used as a rectifier tube; moreover, after switching off, the current is commutated to an anti-parallel diode or a body diode of a complementary switch tube in the same arm, i.e., commutated to an anti-parallel diode or a body diode of a switch tube that needs to be switched on in a half cycle, such that after the dead time, controlling these switch tubes needing to be switched on to be switched on can realize zero-voltage switching-on of the switch tubes.

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 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 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 1/088 - 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
• 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

An energy storage apparatus is provided. The energy storage apparatus includes: a support structure, which is provided with at least one support layer in a height direction of the support structure; an energy storage device, an air outlet is defined at the top of the energy storage device, and an air inlet is defined on a sidewall of the energy storage device, where the number of the energy storage device is at least two, the energy storage devices are arranged in at least two layers through the support layer, and the support layer between adjacent layers of energy storage devices is hollowed out or configured in a partitioning manner; and an air guide structure mounted on the energy storage device and in communication with an air inlet of the energy storage device.

Classes IPC  ?

• F15D 1/00 - Action sur l'écoulement des fluides

Abrégé

The present application discloses a power supply control protection system and a control protection method. The system comprises: a switching power supply, a main controller, an auxiliary controller, a sampling circuit and an energy storage element, wherein the switching power supply is used for supplying power to the sampling circuit, the main controller and the auxiliary controller; the energy storage element is used for providing an auxiliary power supply for the sampling circuit, the main controller and the auxiliary controller; the sampling circuit has a self-checking function and sends a self-checking result to at least one of the main controller and the auxiliary controller; when the self-checking result indicates that the sampling circuit is normal, the main controller or the auxiliary controller controls a converter to work; and the main controller and the auxiliary controller communicate with each other. When a switching power supply cannot normally supply power, an energy storage element supplies power to a controller and a sampling circuit, such that the normal sampling and control reliability of a power supply system is ensured, thereby ensuring that a fault isolation circuit can reliably operate. The sampling circuit has a self-checking function, such that faults of the sampling circuit are found in a timely manner, and thus it is not necessary to provide two sampling circuits, thereby saving on the cost.

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

Abrégé

The present application discloses a photovoltaic system and a control method. The photovoltaic system comprises at least two photovoltaic strings, a power acquisition loop, a trip switch, a switch mode power supply, and a controller. The at least two photovoltaic strings are connected in series or in parallel; the trip switch is connected between the photovoltaic strings and an input end of a converter; the power acquisition loop is used for acquiring power from at least one photovoltaic string and supplying power to the switch mode power supply; the switch mode power supply is used for supplying power to the controller and the trip switch when the power acquisition loop supplies power normally; and the controller is used for controlling, when a wiring fault occurs to the at least two photovoltaic strings connected in parallel, the trip switch to be switched off. The power acquisition loop is specially provided, and the power acquisition loop can directly acquire power from the photovoltaic strings and supply power to the switch mode power supply. When the photovoltaic strings connected to the power acquisition loop are reversely connected, the switch mode power supply does not work, and the trip switch is not switched off, so that the reversely connected photovoltaic strings are not burnt out.

Classes IPC  ?

• H02H 11/00 - Circuits de protection de sécurité pour empêcher la commutation de mise en service dans le cas où une condition électrique de travail indésirable pourrait en résulter

Abrégé

Provided in the present invention are a battery cluster and an energy storage system, which are applied to the technical field of energy storage. The battery cluster comprises a plurality of battery packs and at least one first fuse, wherein each battery pack is connected to each first fuse in series, so as to form a series branch, and the obtained series branch is connected to a switch box provided with a second fuse. By means of the battery cluster provided in the present invention, at least one first fuse is connected in series in the battery cluster, and the first fuse matches a second fuse in a switch box, so as to realize dual protection; and when the second fuse in the switch box fails, protection can be realized depending on the first fuse, such that the fuse protection reliability is effectively improved, and the safe operation of the battery cluster and the energy storage system is ensured.

Classes IPC  ?

• H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p.ex. fusibles
• H01M 10/42 - Procédés ou dispositions pour assurer le fonctionnement ou l'entretien des éléments secondaires ou des demi-éléments secondaires
• H01M 50/51 - Connexion seulement en série
• H02H 7/18 - 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 accumulateurs

Abrégé

A start method for a photovoltaic rapid shutdown system, an application apparatus and a system. In the method, an inverter system controls the voltage change of a corresponding direct current bus in a photovoltaic rapid shutdown system; and a photovoltaic module shutdown device performs determination according to a measured output voltage of itself, and controls itself to be turned on when the change characteristic of the voltage of the direct current bus connected to itself satisfies a preset turn-on condition. Therefore, merely by means of a self-contained voltage sampling device, the photovoltaic module shutdown device can determine whether a turn-on signal is received, without additionally providing a corresponding receiving device, thereby reducing hardware cost of the photovoltaic module shutdown device while realizing communication between the photovoltaic module shutdown device and the outside.

Classes IPC  ?

• 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
• H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité
• H02S 50/10 - Tests de dispositifs PV, p.ex. de modules PV ou de cellules PV individuelles

Abrégé

Disclosed in the present application are a flying capacitor three-level DC-DC converter, a photovoltaic system and a control method. The flying capacitor three-level DC-DC converter comprises: an inductor, a first switch tube, a second switch tube, a first diode, a second diode, a third diode, a flying capacitor and a controller. When the difference between the voltage of a direct-current bus and the voltage of the flying capacitor is greater than or equal to the withstand voltage of the second diode, the controller controls the DC-DC converter not to operate, so as to reduce the voltage of the direct-current bus. When the voltage of the direct-current bus is extra high or a pre-charge voltage of the flying capacitor is extra low, the DC-DC converter operates, and thus the second diode bears an extra-high voltage and is easily damaged. Therefore, by means of reducing the voltage of the direct-current bus, the voltage of the flying capacitor Cf is synchronously raised by means of charging until the difference between the voltage of the direct-current bus and the voltage of the flying capacitor is less than the withstand voltage of the second diode, and then the DC-DC converter operates, such that the safety of the second diode can be ensured.

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 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
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Produits et services

Non-slipping preparations for belts; solvent naphtha; lubricants; petroleum; industrial oil; fuel; wax [raw material]; electricity; electrical energy. Machines for generating hydrogen and oxygen by electrolysis; gas separating installations; machines for generating oxygen and nitrogen; machines for the electronics industry; spin driers [not heated] for manufacturing of paper; pumps [parts of machines, engines or motors]; valves [parts of machines]; compressors [machines]; compressed air machines; electricity generators. Abrasion; processing of materials; electroplating; glass-blowing; pattern printing; upcycling [waste recycling]; decontamination of hazardous materials; recycling of waste and trash; air purification; production of energy. Consultancy in the field of energy-saving; computer software design; maintenance of computer software; monitoring of computer system operation by remote access; software as a service [saas]; consultancy and information services relating to information technology; server hosting; electronic data storage; cloud computing; creation of control programs for electric operation control and drive modules.

Abrégé

An energy storage device and a battery cabinet are provided according to the present disclosure. The energy storage device includes a plurality of battery clusters and a high-voltage switch box. A positive input terminal of the high-voltage switch box is connected to positive electrodes of the plurality of battery clusters, a negative input terminal of the high-voltage switch box is connected to negative electrodes of the plurality of battery clusters, and an output terminal of the high-voltage switch box is configured to connect an electrical device. The high-voltage switch box is configured to control the plurality of battery clusters to be electrically connected to/disconnected from the electrical device. The cost of a battery cabinet is reduced in the present disclosure.

Classes IPC  ?

• H01M 50/583 - Dispositifs ou dispositions pour l’interruption du courant en réponse au courant, p.ex. fusibles
• H02B 1/24 - Circuits pour tableaux ou stations de commutation
• H01M 50/204 - Bâtis, modules ou blocs de multiples batteries ou de multiples cellules

Abrégé

The present application discloses a combiner device, a photovoltaic system and a fault detection method. The combiner device comprises at least two photovoltaic strings connected in parallel; and further comprises a current measurement circuit, a voltage measurement circuit, an insulation resistance measurement circuit and a controller. The current measurement circuit is used for measuring the current of each photovoltaic string; the voltage measurement circuit is used for measuring the voltage of the photovoltaic strings connected in parallel; the insulation resistance measurement circuit is used for measuring the insulation resistance of the photovoltaic strings connected in parallel; and the controller determines, according to the current, the voltage and the insulation resistance, whether the photovoltaic strings have a reverse connection fault. When performing determination on the photovoltaic strings, three parameters, i.e., the current, the voltage and the insulation resistance, are comprehensively determined, so that whether the photovoltaic strings really have the reverse connection fault can be accurately determined, and the impact on power generation capacity caused by erroneous determination is reduced. Whether the reverse connection fault occurs cannot be accurately determined only by means of the current, and other faults may also cause current reverse.

Classes IPC  ?

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

Abrégé

An outdoor cabinet, comprising a cabinet body (101), an auxiliary mount (103) and an air conditioner (102). The auxiliary mount (103) is fixed to an inner side surface of a preset side wall (111) in the cabinet body (101) and enslcoses an air conditioner mounting space with the preset side wall (111); the inner side surface of the preset side wall (111) is a surface of the preset side wall (111) facing the interior of the cabinet body (101); the air conditioner (102) is mounted in the air conditioner mounting space, and the air conditioner (102) is positioned inside the cabinet body (101); and an opening is provided at the end of the auxiliary mount (103) facing away from the preset side wall (111), and each of an inner circulation air inlet and an inner circulation air outlet of the air conditioner (102) is exposed inside the cabinet body (101) via the opening. By mounting the auxiliary mount in the cabinet body and enclosing the air conditioner mounting space with the preset side wall, the air conditioner can be assembled, the air conditioner is also prevented from protruding from an outer surface of the preset side wall, and an appearance structure of the entire outdoor cabinet is ensured to be attractive.

Classes IPC  ?

• H02B 1/56 - Refroidissement; Ventilation
• H02B 1/32 - Montage de dispositifs à l'intérieur de ces enveloppes
• H02B 1/04 - Montage sur ces dispositifs d'interrupteurs ou d'autres dispositifs en général, l'interrupteur ou le dispositif étant muni ou non d'une enveloppe
• H02S 10/00 - Centrales électriques PV; Combinaisons de systèmes d’énergie PV avec d’autres systèmes pour la production d’énergie électrique

Abrégé

The present invention provides a transformer, which is applied to the technical field of power transmission and distribution, the transformer comprising an iron core, body windings, and a semi-conductive layer, the body windings being sleeved on a core post of the iron core, and the semi-conductive layer being correspondingly provided with the body windings. Auxiliary circuits are connected to the body windings, the auxiliary circuits and preset positions of the body windings have equal potentials, and an equipotential connection point of the semi-conductive layer is provided by the auxiliary circuits. After the semi-conductive layer is connected to the auxiliary circuits, the effect of balancing the electric field distribution of a winding can be achieved. In the transformer provided in the present invention, an equipotential connection point having an equal potential with the preset positions of the body windings of the transformer is provided by means of the auxiliary circuits, and the semi-conductive layer is directly connected to the equipotential connection point, thereby achieving set effects of the semi-conductive layer, that is, improving the electric field distribution of windings, and improving the high-voltage insulation performance of the transformer without damaging the insulation between litz wire strands.

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
• H01F 27/24 - Noyaux magnétiques
• H01F 27/29 - Bornes; Aménagements de prises

Abrégé

The present application provides a converter and a chopper transistor blocking control method therefor. According to the chopper transistor blocking control method, when switching transistors in a converter need to be blocked, switching transistors in a primary side circuit connected to a transformer of the converter are blocked, and switching transistors in a secondary side circuit are blocked when the current on a branch where a secondary side winding in the transformer is located is zero, or batch blocking of the switching transistors in the secondary side circuit is completed after the current on the branch where the secondary side winding is located recirculates to zero, thereby avoiding overvoltage damage to the switching transistors caused by the current on the branch where the secondary side winding is located recirculating by means of the junction capacitance of the switching transistors in the secondary side circuit.

Classes IPC  ?

• 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

Produits et services

Data processing apparatus; converters, electric; electric apparatus for commutation; electro-dynamic apparatus for the remote control of signals; inverters [electricity]; photovoltaic apparatus and installations for generating solar electricity; computer software platforms, recorded or downloadable; security surveillance robots; transformers [electricity]; batteries, electric. Cooling installations and machines; air-conditioning installations; gas scrubbing apparatus; air cooling apparatus; heating installations; radiators [heating]; solar thermal collectors [heating]; solar energy collectors; radiator caps; heat sinks for use in ventilating apparatus.

Produits et services

Floating bridge [made of rubber]; motors, electric, for land vehicles; vehicles for locomotion by land, air, water or rail; bicycles; tires for vehicle wheels; electric vehicles; trolleys; boats; inclined ways for boats; self-driving vehicles [autonomous vehicles]. Rubber, raw or semi-worked; plastic sheeting; plastic rods; floating anti-pollution barriers; dielectrics [insulators]. Technological research; consultancy in the field of energy-saving; water analysis; scientific laboratory services; quality testing; computer programming; computer software design; Software as a Service [SaaS]; research and development of new products for others; providing information, advice, and consultation on carbon offsetting; monitoring of computer system operation by remote access; consultancy services relating to information technology.

Abrégé

A muffler assembly and a new energy device are disclosed according to the present disclosure. The muffler assembly includes a muffler unit including a side plate and a partition plate. The side plate includes an upper side plate and a lower side plate which are oppositely arranged. The partition plate includes a first partition plate, a second partition plate and a third partition plate, the first partition plate and the third partition plate are connected to the lower side plate, the second partition plate is connected to the upper side plate and arranged between the first partition plate and the third partition plate. A first muffler channel, a second muffler channel, and a third muffler channel are formed.

Classes IPC  ?

• G10K 11/162 - Sélection de matériaux

Abrégé

The present application discloses an isolated AC-DC converter, a charging device, and a power supply system. The isolated AC-DC converter comprises: a PFC filter, wherein an input end of the PFC filter is connected to an alternating current; a PFC circuit, wherein an input end of the PFC circuit is connected to an output end of the PFC filter, and an output end of the PFC circuit is connected to an input end of a DC-DC circuit; and the DC-DC circuit, comprising a transformer, wherein the transformer comprises: a primary winding, a secondary winding, and a first shielding layer; the first shielding layer is arranged between the primary winding and the secondary winding; the first shielding layer is connected to the PFC filter for preventing an interference signal from being transmitted to the secondary winding. In order to prevent an interference source from being transmitted to the secondary winding by means of the primary winding, the interference signal of the primary winding of the transformer is transmitted back to the PFC filter by means of the first shielding layer to form a common-mode loop for preventing the interference signal from being transmitted to the secondary winding. According to the solution, an EMC filter does not need to be additionally arranged, a shielding layer is additionally arranged, the implementation is easy, and the size and the volume are not greatly increased.

Classes IPC  ?

• H02M 1/44 - Circuits ou dispositions pour corriger les interférences électromagnétiques dans les convertisseurs ou les onduleurs
• 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 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
• H02M 7/217 - 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
• 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

A grounding structure and electrical equipment. The electrical equipment comprises a case (1) having a grounding requirement and a functional device (2) at least partially disposed outside the case (1); the grounding structure comprises at least one grounding connecting portion (3), and the grounding connecting portion (3) is disposed on the housing wall of the part, located outside the case (1), of the functional device (2); and the housing wall of the functional device (2) is conductively connected to the case (1). According to the grounding structure, in the practical application process, the grounding connecting portion (3) is arranged on the housing wall of the functional device (2), and the housing wall of the functional device (2) is conductively connected to the case (1), so that the grounding requirement of the case (1) of the electrical equipment can be satisfied, the internal space of the case (1) does not need to be occupied, i.e., the safety space between the grounding connecting portion (3) and electrical components in the case (1) does not need to be considered, and thus the miniaturization of the case (1) is facilitated.

Classes IPC  ?

• H01R 4/66 - Connexions à la masse terrestre, p.ex. plaque de terre, piquet de terre

Produits et services

(1) Machines for generating hydrogen and oxygen by electrolysis; gas separating installations; machines for generating oxygen and nitrogen; machines for the electronics industry; spin driers [not heated] for manufacturing of paper; pumps [parts of machines, engines or motors]; valves [parts of machines]; compressors [machines]; compressed air machines; electricity generators. (1) Consultancy in the field of energy-saving; computer software design; maintenance of computer software; monitoring of computer system operation by remote access; software as a service [saas]; consultancy and information services relating to information technology; server hosting; electronic data storage; cloud computing; creation of control programs for electric operation control and drive modules.

Produits et services

Machines for generating hydrogen and oxygen by electrolysis; gas separating installations; machines for generating oxygen and nitrogen; machines for the electronics industry; spin driers (not heated) for manufacturing of paper; pumps (parts of machines, engines or motors); valves (parts of machines); compressors (machines); compressed air machines; electricity generators Consultancy in the field of energy-saving; computer software design; maintenance of computer software; monitoring of computer system operation by remote access; software as a service (saas); consultancy and information services relating to information technology; server hosting; electronic data storage; cloud computing; creation of control programs for electric operation control and drive modules

Abrégé

An inverter and a method for detecting insulation impedance of the inverter are provided. During grid-connected operation of the inverter, the method includes: controlling a power supply to output two different test signals, and recording voltages of a power grid to ground corresponding to the two test signals; and calculating the insulation impedance to ground of the inverter during the grid-connected operation of the inverter according to the two test signals and the voltages of the power grid to ground corresponding to the two test signals. According to the present disclosure, the power supply outputs different test signals to disturb the voltage of the power grid to ground, so as to detect insulation impedance of the inverter during grid-connected operation of the inverter.

Classes IPC  ?

• G01R 27/02 - Mesure de résistances, de réactances, d'impédances réelles ou complexes, ou autres caractéristiques bipolaires qui en dérivent, p.ex. constante de temps
• H02M 7/44 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité par convertisseurs statiques

Abrégé

Disclosed in the present invention are a photovoltaic system direct-current arc fault detection method, apparatus and device, and a computer readable storage medium. The method comprises: detecting whether an optimizer control apparatus and a power optimizer in a photovoltaic system are in a communication state; if it is determined that the optimizer control apparatus and the power optimizer are not in the communication state, acquiring a direct-current side alternating-current signal of an inverter in the photovoltaic system; extracting a signal feature of a preset arc detection frequency band in the direct-current side alternating-current signal as a first arc signal feature; and analyzing according to the first arc signal feature to obtain a direct-current arc fault detection result of the photovoltaic system. According to the present invention, direct-current arc fault detection is performed by using gaps in power optimizer communication; thus, the impact of power optimizer communication on arc detection is avoided while functions of the power optimizer and the arc detection are compatible, and the false detection rate of arc detection is reduced.

Classes IPC  ?

• H02S 50/00 - Surveillance ou tests de systèmes PV, p.ex. équilibrage de charge ou identification des défauts
• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive

Abrégé

A liquid replenishment and drainage device for a liquid-cooled energy storage system includes a pump, a switching power supply, a first switching valve, a check valve and a pipeline which is configured to be connected to the liquid-cooled energy storage system; the pump is arranged on the first pipeline, and the pump is electrically connected with the switching power supply; two ends of the first switching valve are respectively in communication with the first pipeline, communication positions are respectively located at two ends of the pump, and the check valve is arranged on the first pipeline and is located between the pump and the communication positions. The liquid replenishment and drainage device for the liquid-cooled energy storage system can improve the liquid replenishment and drainage efficiency of the liquid-cooled energy storage system.

Classes IPC  ?

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

Abrégé

A heat dissipation assembly and an electric energy conversion apparatus are disclosed according to the present application. The heat dissipation assembly comprises a side cover connected to the electric energy conversion apparatus and an air outlet cover, a heat dissipation passage is formed by enclosure of the side cover and one side surface of the electric energy conversion apparatus, the side cover is provided with an air inlet in communication with the heat dissipation passage; the air outlet cover is arranged at the top of the electric energy conversion apparatus and partially connected with the side cover, and an air outlet space is formed by enclosure of the air outlet cover, the air outlet space is in communication with the heat dissipation passage, the air outlet cover is provided with an air outlet at an outer peripheral side of the air outlet cover away from the electric energy conversion apparatus.

Classes IPC  ?

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

Abrégé

A charging device, comprising a housing, a charging unit, and fans. The housing is provided with an accommodation cavity; the housing is provided with air inlets and air outlets communicated with the accommodation cavity; the charging unit is provided in the accommodation cavity, and comprises charging modules, the charging modules being used for charging batteries; and the fans are located at the air inlets, such that cold air is injected into the accommodation cavity through the air inlets, flows through the charging modules, and is exhausted through the air outlets. According to the technical solution of the present application, the service life of the fans can be ensured, and the heat dissipation efficiency and the use safety of the charging modules can also be improved, thereby promoting the reliable usage of the charging device.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• B60L 53/302 - Refroidissement des équipements de charge

Abrégé

A cascaded multi-port converter and a three-phase medium-voltage input system. Input terminals of the module units are cascaded. In each module unit: input ends of the high-voltage conversion units are cascaded, a magnetic core of a multi-winding transformer is wound with multiple primary windings and at least one secondary winding, an output end of each high-voltage conversion unit is connected to a corresponding primary winding, and the secondary winding is connected to an input end of a corresponding low-voltage rectifying unit. Therefore, the windings of the multiple high-voltage conversion units share the magnetic core, and the number of the multi-winding transformers and the number of the low-voltage rectifying units can be reduced, thereby reducing the volume, weight, and costs of the cascaded multi-port converter.

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

Abrégé

Disclosed in the present application are an isolated matrix converter and a control method. The converter comprises bidirectional switch modules, a transformer, a resonant inductor, a resonant capacitor and bridge arm capacitors, a bidirectional switch module and a bridge arm capacitor being connected in series to form a bridge arm of the converter, each bridge arm of the converter comprising at least one bidirectional switch module, the primary winding of the transformer being connected to the resonant inductor and the resonant capacitor in series and then connected to two ends of the bridge arms of the converter, each bidirectional switch module comprising a clamping capacitor and bidirectional switch units, the bidirectional switch units forming two bridge arms of the module, two ends of the clamping capacitor being connected to two ends of the two bridge arms of the module, the clamping capacitor and the two upper bridge arms or two lower bridge arms of the two bridge arms forming a clamping absorption circuit, each bidirectional switch unit comprising at least two controllable switching transistors, and the clamping capacitor inhibiting a voltage spike generated during an action of the switching transistors in the bidirectional switch module. Therefore, the switching transistors are protected and the safety of the whole converter is further protected, improving the reliability of the whole converter.

Classes IPC  ?

• H02M 7/797 - 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 avec 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
• H02M 5/10 - Transformation d'une puissance d'entrée en courant alternatif en une puissance de sortie en courant alternatif, p.ex. pour changement de la tension, pour changement de la fréquence, pour changement du nombre de phases sans transformation intermédiaire en courant continu par convertisseurs statiques utilisant des transformateurs
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• 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 7/06 - Régulation du courant ou de la tension de charge utilisant des tubes à décharge ou des dispositifs à semi-conducteurs

Abrégé

Provided in the present application are a wiring device for a photovoltaic device, and a photovoltaic apparatus. The wiring device for a photovoltaic device comprises a first component and a second component. The first component is arranged at one end of the photovoltaic device; the second component is detachably connected to the first component; and the second component is used, when being connected to the first compoent, for being connected to the photovoltaic device by means of the first component, and for supplying power to the photovoltaic device or being supplied power therefrom. The technical solutions of the embodiments of the present application can solve the problem of wiring being difficult due to the wiring space being tight at the bottom of a photovoltaic device, such that the effect of the photovoltaic device being capable of being electrically connected to an external cable, without needing wiring every time, is achieved.

Classes IPC  ?

• H02S 40/30 - Composants électriques

Abrégé

A case and an electrical device. The case comprises a case body, a case cover and a connecting mechanism, wherein the case body is provided with a cavity and an opening in communication with the cavity; the case cover covers the opening; and the connecting mechanism is connected between the case body and the case cover, at least one connecting mechanism comprises a reinforcing member, the reinforcing member is connected to the case body, and the material and/or thickness and/or contact area of the reinforcing member of the at least one connecting mechanism is different from that of reinforcing members of the other connecting mechanisms. The technical scheme of the utility model can prevent the case cover from flying out to cause a potential safety hazard, when a machine in the case explodes.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails
• H05K 5/06 - Enveloppes scellées hermétiquement

Abrégé

A cascaded multi-port converter and a three-phase medium-voltage input system. Input ends of all high-voltage conversion units are cascaded between two ports of an input end of the cascaded multi-port converter. A primary winding of a multi-winding transformer is connected to an output end of a corresponding high-voltage conversion unit, and a secondary winding of the multi-winding transformer is connected to an input end of a corresponding low-voltage rectifier unit. Output ends of some of the low-voltage rectifier units are connected to each other through a bus, and the remaining low-voltage rectifier units outputs independently, such that at least one secondary winding in each multi-winding transformer is indirectly connected to the bus, and at least one multi-winding transformer is provided with at least one secondary winding that independently outputs. Therefore, power balance between various modular units is achieved, and the security of the cascaded multi-port converter is improved.

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

Abrégé

A phase-change heat dissipater and a power module are provided according to the present application. The phase-change heat dissipater includes least two evaporators, at least one condenser and at least two sets of heat transfer pipelines, the at least two evaporators and at least one condenser form at least two circulating heat dissipation circuits through the at least two sets of heat transfer pipelines, and a phase-change medium is filled in the at least two circulating heat dissipation circuits; and the at least two evaporators are arranged sequentially along a vertical direction. The technical solution of the present application can improve the temperature difference of the at least two evaporators and maintain the temperature uniformity of the at least two evaporators.

Classes IPC  ?

• H01L 23/427 - Refroidissement par changement d'état, p.ex. caloducs

Abrégé

Disclosed in the present invention is a photovoltaic connector, comprising a socket, and plugs configured to be inserted into the socket, wherein each plug is provided with at least one photovoltaic cable configured to be electrically connected to the socket; the socket is configured to be connected to at least two plugs in an inserted manner; and/or, the number of the photovoltaic cables of at least one plug is at least two. In the photovoltaic connector, if the socket is configured to be connected to at least two plugs in an inserted manner, in comparison with the prior art in which sockets correspond to plugs on a one-to-one basis, the number of the sockets is reduced, and the area of the box that is occupied by the socket is reduced, thereby reducing the overall size of the box. If the number of the photovoltaic cables of at least one plug is at least two, in comparison with the prior art in which each plug is provided with one photovoltaic cable, the number of the plugs and an operation space to be reserved for plugging and unplugging the plug are reduced, and the area of the box that is occupied by the photovoltaic connector is reduced, thereby reducing the overall size of the box.

Classes IPC  ?

• H01R 13/10 - Alvéoles destinés à coopérer avec des broches ou lames
• H01R 13/04 - Broches ou lames destinées à coopérer avec des alvéoles
• H01R 13/73 - Moyens de montage des pièces de couplage sur les appareils ou structures, p.ex. sur un mur
• H01R 13/514 - Socles; Boîtiers formés comme un bloc ou un assemblage modulaire, c. à d. composés de parties coopérantes pourvues de pièces de contact ou maintenant entre elles des pièces de contact

Produits et services

Lubricating oil; Industrial oil; Fuel; Industrial wax; candles; Dust removing preparations; Electrical energy; Petroleum; Electrical energy from renewable sources. Machines for battery industry; Special machinery for storage battery industry; Machines for the electrostatic industry; Machines for the electronic industry; Current generators; electric power generators; Solar power generators; battery core pressing machines; Battery cable rolling machines; fuel cell generators. battery testers; Photovoltaic inverters; battery charge devices; Photovoltaic apparatus for generating electricity; lithium ion batteries; Photovoltaic apparatus and installations for generating solar electricity; battery charging devices for motor vehicles; batteries,electric; charging stations for electric vehicles; Ultracapacitors for energy storage. Display services for merchandise; on-line promotion of computer networks and websites; advertising via mobile phone networks; Publicity; providing business information via the Internet; arranging and conducting of fairs and exhibitions for business and advertising purposes; Market opinion polling studies; customer relationship management; business information and inquiries; Marketing; Arranging and conducting of business meetings. Wireless broadcasting; Message sending; Computer aided transmission of messages and images; Providing access to databases; Providing online forums; streaming of data; radio communications; providing telecommunications connections to a global computer network; communications by computer terminals; broadband radio communication services. Know-how transfer [training]; arranging, conducting and organization of seminars; organisation of games; Arranging and conducting of conferences; Organization of shows [impresario services]; Publication of brochures; layout services, other than for advertising purposes; providing online videos, not downloadable; Prize draws [lotteries]. technological research; Development of construction projects; Computer programming; technological consultancy in the field of alternative energy generation; Research in the field of energy; Engineering design; Creation of control programs for electric operation control and drive modules; provision of scientific information, advice and consultancy in relation to carbon offsetting; technical design and planning of power stations; software as a service (SaaS).

Abrégé

A phase-change heat exchanger and a heat exchange core thereof are provided according to the present application, which include an evaporator and a condenser which is in communication with the evaporator and is located above the evaporator, and at least one of the evaporator and the condenser is inclined in the housing. In the actual use, since at least one of the evaporator and the condenser is inclined in the housing, a space in a thickness direction of an inner cavity of a housing of the phase-change heat exchanger can be fully utilized, a span in a connection direction between the evaporator and the condenser can be reduced, and thus an overall volume of the phase-change heat exchanger can be reduced.

Classes IPC  ?

• F28D 15/02 - Appareils échangeurs de chaleur dans lesquels l'agent intermédiaire de transfert de chaleur en tubes fermés passe dans ou à travers les parois des canalisations dans lesquels l'agent se condense et s'évapore, p.ex. tubes caloporteurs

Abrégé

Disclosed in the present utility model is an electrical device, comprising a box body and a plurality of hanging members. Apparatuses are provided outside the box body; the handing members are respectively fixed to the apparatuses, and a first handing member and a second hanging member in the hanging members are distributed on two sides of the box body. The hanging members in the electrical device are mounted on the apparatuses outside the box body instead of being directly mounted on the box body, such that the area of the box body is saved, the box body is prevented from being set to be larger due to the assembly of the hanging members, and the miniaturization requirements in the prior art on the electrical device are met. In addition, the box body does not need to be set to be large, and the cost can be saved. Further disclosed in the present utility model are an electrical device hanging system and a photovoltaic power station which respectively use the electrical device, and the miniaturization requirements in the prior art on the electrical device are met.

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 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

Abrégé

A plug-in device and a power conversion apparatus are provided. The plug-in device includes a housing, a connector and a temperature acquisition device. The housing is defined with a holding cavity. The connector includes a clamping part and a fixed connection part. The clamping part is arranged in the holding cavity. The fixed connection part partially extends out of the housing. The clamping part is configured to clamp a power conversion device. The fixed connection part is connected to a reactor. The temperature acquisition device is arranged close to the connector, and is configured to acquire a temperature at an overlapping point of the power conversion device and the clamping part.

Classes IPC  ?

• H01R 4/30 - Connexions par serrage; Connexions par ressort utilisant un organe de serrage constitué par une vis ou par un écrou
• H01R 13/66 - Association structurelle avec des composants électriques incorporés
• 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
• H01C 7/00 - Résistances fixes constituées par une ou plusieurs couches ou revêtements; Résistances fixes constituées de matériau conducteur en poudre ou de matériau semi-conducteur en poudre avec ou sans matériau isolant

Abrégé

A sealing device and a mechanical apparatus. The sealing device comprises a mounting plate and a plurality of first sealing cylinders disposed on the mounting plate, and the mounting plate is provided with through holes through which a member to be sealed passes. The plurality of first sealing cylinders are spaced apart and nested with each other on the mounting plate. Each first sealing cylinder is provided with a first opening and a second opening, the first opening is connected to the outer periphery of the corresponding through hole, and the second opening abuts against the surface of the member to be sealed so as to seal the outer periphery of the member to be sealed. By means of the technical solution of the present invention, an operator can conveniently seal the member to be sealed.

Classes IPC  ?

• H02G 3/22 - Installations de câbles ou de lignes à travers les murs, les sols ou les plafonds, p.ex. dans les immeubles

Abrégé

Disclosed in the present application are a photovoltaic system, an inverter starting method and a photovoltaic energy storage system. The photovoltaic system comprises a shutdown device, a controller and an inverter, the inverter comprising a direct current-direct current circuit and an inverter circuit, the direct current-direct current circuit at least comprising a boost circuit, an input end of the shutdown device being used for connecting a photovoltaic panel, an output end of the shutdown device being connected to an input end of the direct current-direct current circuit, an output end of the direct current-direct current circuit being connected to an input end of the inverter circuit, the controller being used for controlling the inverter to complete a starting process in a plurality of stages when starting the inverter during which a starting time of the inverter is longer than a single conduction maintaining time of the shutdown device, and each stage corresponding to the shutdown device being awakened and conducted once. During the starting process of the inverter, after the shutdown device is awakened for a while, if the shutdown device detects that parameters thereof meet a shutdown condition, the shutdown device will be automatically shut down; at this moment, the starting process of the inverter is not completed yet, so that the shutdown device needs to be awakened again; and said steps are repeated until the inverter is successfully started.

Classes IPC  ?

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

Abrégé

An arc fault detection method and apparatus, and a device. The method comprises: acquiring a preset arc feature value, which is calculated on the basis of a collected direct current side signal of an inverter (S11); acquiring an initial feature threshold value (S12); according to the magnitude relationship between the preset arc feature value and the initial feature threshold value, determining whether a suspected arc occurs (S13); if so, performing a wave sealing operation on the inverter, and at least on the basis of an electric signal of the inverter after the wave sealing operation is performed thereon, determining an arc detection result corresponding to the suspected arc (S14), wherein the arc detection result comprises a real arc or a false arc; and on the basis of the arc detection result, adjusting an initial threshold value to obtain a target threshold value, and updating the initial feature threshold value to the target threshold value (S15). That is, in the method, the used initial feature threshold value can be adjusted according to the arc detection result of the actually detected suspected arc, such that the initial feature threshold value better conforms to an actual application environment, and the accuracy of the initial feature threshold value is improved, thereby improving the arc fault detection accuracy.

Classes IPC  ?

• G01R 31/12 - Test de la rigidité diélectrique ou de la tension disruptive
• H02H 7/26 - Protection sectionnelle de systèmes de câbles ou de lignes, p.ex. pour déconnecter une section dans laquelle un court-circuit, un défaut à la terre, ou une décharge d'arc se sont produits
• H02S 50/00 - Surveillance ou tests de systèmes PV, p.ex. équilibrage de charge ou identification des défauts

Produits et services

Data processing apparatus; converters, electric; electric apparatus for commutation; electro-dynamic apparatus for the remote control of signals; inverters [electricity]; photovoltaic apparatus and installations for generating solar electricity; computer software platforms, recorded or downloadable; security surveillance robots; transformers [electricity]; Batteries, electric. Cooling installations and machines; Air conditioning installations; Gas scrubbing apparatus; Air cooling apparatus; Heating installations; Radiators [heating]; Solar thermal collectors [heating]; Solar energy collector; Radiator caps; heat sinks for use in ventilating apparatus.

Abrégé

A HiL testing platform for a photovoltaic power station and a PPC performance testing method are provided. The HiL testing platform includes: a PPC, an inverter controller, and a HiL real-time simulator. Each of the PPC, the inverter controller, and the HiL real-time simulator is arranged with an upper computer. The PPC is configured to communicate with the inverter controller according to a predetermined communication protocol. The HiL real-time simulator is connected to the PPC and the inverter controller through a digital input interface and/or an analog output interface, and is configured to simulate a testing device in the photovoltaic power station in a digital model form.

Classes IPC  ?

• H02S 50/10 - Tests de dispositifs PV, p.ex. de modules PV ou de cellules PV individuelles

Abrégé

A photovoltaic grid-connected system and a control method therefor. The photovoltaic inverter is connected to the grid through a synchronous motor back-to-back drive system including two synchronous motors. The photovoltaic inverter is controlled to operate in the current source mode after the photovoltaic grid-connected system is started, the synchronous motor back-to-back drive system is controlled to operate in the generator mode, and the excitation current of the first synchronous motor is controlled to maintain the voltage stability of the AC side of the photovoltaic inverter. Therefore, the stability and safety of the power grid is significantly improved and the impact of intermittent new energy on the power grid is reduced by virtue of the characteristics of the synchronous motor, and the maximum power point of the photovoltaic array can be tracked to avoid loss of power generation, and traditional photovoltaic inverters can be used without any modification.

Classes IPC  ?

• H02J 3/18 - Dispositions pour réglage, élimination ou compensation de puissance réactive dans les réseaux
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs

Abrégé

An inverter and an inverter system. The inverter comprises an inverter module and a power distribution unit; the inverter module has a first direction and a second direction which are perpendicular to each other; the inverter module is provided with a direct current input end and an alternating current output end, and the direct current input end and the alternating current output end are distributed on two sides of the inverter module in the first direction; the power distribution unit comprises a direct current module and an alternating current module, and the direct current module and the alternating current module are provided at a same end of the inverter module in the second direction; the direct current input end faces the power distribution unit; the alternating current output end faces the power distribution unit; the direct current module is electrically connected to the direct current input end; the alternating current module is electrically connected to the alternating current output end. According to the technical solution of the present utility model, the cable consumption of the inverter can be reduced, and the operation safety and maintainability of the inverter are improved.

Classes IPC  ?

• H02M 7/42 - Transformation d'une puissance d'entrée en courant continu en une puissance de sortie en courant alternatif sans possibilité de réversibilité
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails

Abrégé

A method and a device for detecting coverage in HIL testing, and a computer-readable storage medium are. The method includes: acquiring an HIL test case and performing HIL testing on a controller based on the HIL test case; for each of functions in code of the controller, detecting a preset mark of the function and acquiring statistical data about the detected preset mark during the HIL testing; and determining coverage of the HIL test case on the functions based on the statistical data about the preset marks. Both the determination of execution and functionality of the function in the code based on the HIL test case as well as the determination of the coverage of the HIL test case based on the execution of the function in the code are performed during the HIL testing.

Classes IPC  ?

• G06F 11/27 - Tests intégrés
• G06F 11/36 - Prévention d'erreurs en effectuant des tests ou par débogage de logiciel

Abrégé

A method for controlling a photovoltaic rapid shutdown system, an inverting system, and a photovoltaic rapid shutdown system. In the photovoltaic rapid shutdown system, the inverting system determines whether the photovoltaic rapid shutdown system is to enter a safe mode, introduces fluctuations onto a direct-current bus in the photovoltaic rapid shutdown system in response to the photovoltaic rapid shutdown system being not to enter the safe mode, and otherwise does not introduce the fluctuations onto the direct-current bus. A shutdown device for a photovoltaic module determines according to an output parameter thereof whether an electrical parameter on the direct-current bus connected to the shutdown device meets a preset condition, controls itself to be turned on or maintains itself being on in response to the electrical parameter meeting the preset condition, and otherwise controls itself to be turned off or maintains itself being off.

Classes IPC  ?

• H02J 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A power conversion device and an integrated machine are provided, The power conversion device includes a housing and a power converter. The power converter is arranged in the housing, and two ends, opposite to each other, of the power converter are respectively provided with a direct current wiring area and an alternate current wiring area. Two ends of the housing corresponding to the direct current wiring area and the alternate current wiring area each is provided with a movable door being capable of being opened and closed.

Classes IPC  ?

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

Abrégé

A flowguide grille, an air conditioner and an energy storage device are disclosed according to the present disclosure, the flowguide grille comprises a mounting bracket and a plurality of guide vanes, the mounting bracket is mounted on the air conditioner and covers an air outlet of the air conditioner, the mounting bracket is extended along an up-down direction of the air conditioner; the plurality of guide vanes are connected to the mounting bracket at intervals, the guide vane comprises a drainage plate and a guide plate, the drainage plate is extended along an air outlet direction of the air conditioner, and is bent upwards to be connected with the guide plate, the guide vanes are used for expanding the air outlet range of the air conditioner in the up-down direction.

Classes IPC  ?

• F24F 13/08 - Organes de réglage de l'écoulement d'air, p.ex. persiennes, grilles, volets ou plaques directrices
• F24F 13/20 - Enveloppes ou couvercles

Abrégé

A performance testing device for heat pipe heatsink is provided according to the present application, including a heating simulation assembly, first temperature sensors and second temperature sensors, the heating simulation assembly is used to simulate heating generation of a heating element and has a heat conduction end face fitted to and transfer heat with the evaporation pipe sections of heat pipes of the heat pipe heatsink; the first temperature sensors are used to detect the temperature of the heat conduction end face, and the first temperature sensors are arranged in one-to-one correspondence with the evaporation pipe sections of the heat pipes; the second temperature sensors are arranged at condensing pipe sections of the heat pipes.

Classes IPC  ?

• G01N 25/18 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la conductivité thermique
• G01N 25/20 - Recherche ou analyse des matériaux par l'utilisation de moyens thermiques en recherchant la production de quantités de chaleur, c. à d. la calorimétrie, p.ex. en mesurant la chaleur spécifique, en mesurant la conductivité thermique

Abrégé

A fairing and a fan device are provided according to the present disclosure. The fairing includes a fairing body which is arranged at a fan air vent, the fairing body has a fairing area, which is annular and is located at a periphery of a geometric center of the fairing body, and the fairing area is provided with a fairing through hole. In the fairing according to the present disclosure, the fairing body has the fairing area, the fairing area is provided with the fairing through hole, and the fairing body is configured to arranged at the fan air vent, so that the airflow is faired through the fairing through hole, the fairing area is annular and is located at the periphery of the geometric center of the fairing body, so that the fairing body has no fairing through hole at its geometric center.

Classes IPC  ?

• F04D 29/52 - Carters d'enveloppe; Tubulures pour le fluide énergétique pour pompes axiales
• F04D 19/00 - Pompes à flux axial spécialement adaptées aux fluides compressibles
• F04D 29/54 - Moyens de guidage du fluide, p.ex. diffuseurs

Abrégé

Provided in the present application is a micro inverter. In a main circuit of the micro inverter, after N conversion branches are cascaded with each other, the same transformer is shared to connect a secondary-side bridge arm, thereby avoiding the need for N transformers in the prior art; moreover, by means of cascading, the N conversion branches can realize decoupling in terms of control, thereby avoiding the need to additionally equip each branch with a device for decoupling, and thus reducing the volume and costs. In addition, each direct-current source or load can realize alternating-current grid connection only by means of one-stage conversion, and therefore, the conversion efficiency is improved compared with a two-stage conversion structure in the prior art.

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

Abrégé

An inverter is provided according to the present disclosure. The inverter is configured with a first direction and a second direction, the first direction and the second direction are vertical to each other, and a length of the inverter in the first direction is greater than a length of the inverter in the second direction; the inverter comprises a direct current device and an inversion alternating current device, and the direct current device and the inversion alternating current device are arranged along the first direction and electrically connected; wherein the direct current device and the inversion alternating current device are arranged alternately; or the inversion alternating current device is arranged collectively and the direct current device is arranged on an outside of the alternating current device.

Classes IPC  ?

• 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
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti

Abrégé

A cascaded power electronic transformer and a method for controlling the same are provided. The method includes: calculating electrical angles θi1 and θkps of an sth transformer and a compensation electrical angle θj of a jth transformer; adding the compensation electrical angle θj to the electrical angle θkps of the jth transformer, to obtain a compensated electrical angle θkps of the jth transformer; and calculating a square wave of a bridge arm voltage of each of the m primary converters and the r secondary converters of the sth transformer based on the electrical angle θi1 and the electrical angle θkps of the sth transformer after compensation.

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 1/08 - Circuits spécialement adaptés à la production d'une tension de commande pour les dispositifs à semi-conducteurs incorporés dans des convertisseurs statiques

Abrégé

Provided are an on-board charger, a DCDC converter and a control method. An input end of a high-voltage direct-current conversion circuit is connected to an output end of a power factor correction circuit, an input end of a low-voltage direct-current (LVDC) conversion circuit is connected to an output end of the high-voltage direct-current conversion circuit or the output end of the power factor correction circuit, and an output end of the low-voltage direct-current conversion circuit is connected to a low-voltage battery; and the low-voltage direct-current conversion circuit comprises a main power tube and a controllable switching tube. When the low-voltage direct-current conversion circuit starts, a controller generates a driving signal for the main power tube by using a current loop soft start, such that a current flowing through an inductor gradually increases; a given current value of a current loop depends on a reference current value, which is output by a voltage loop, and an output result of a soft start function; and after the start of the low-voltage direct-current conversion circuit is completed, the voltage loop and the current loop are cascaded to generate a driving signal for the main power tube, and the voltage loop outputs the reference current value to an input end of the current loop, thereby reducing an impact current to the main power tube when the LVDC conversion circuit starts.

Classes IPC  ?

• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
• 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

Abrégé

Disclosed is an energy storage battery system, comprising: a liquid cooling unit, the liquid cooling unit having a coolant outlet and a coolant inlet; a supporting structure, the supporting structure being at least partially open, and the supporting structure internally having a first coolant channel and a second coolant channel, an inlet of the first coolant channel being communicated with the coolant outlet of the liquid cooling unit, an outlet of the second coolant channel being communicated with the coolant inlet of the liquid cooling unit; a plurality of battery modules assembled on the supporting structure, each battery module internally having a heat exchanger, a coolant inlet of the heat exchanger being communicated with an outlet of the first coolant channel, a coolant outlet of the heat exchanger being communicated with an inlet of the second coolant channel. With the structural design of the energy storage battery system, flexible changes can be made to the quantity and positions of battery modules.

Classes IPC  ?

• H01M 10/613 - Refroidissement ou maintien du froid
• H01M 10/627 - Installations fixes, p.ex. ensemble de production d’énergie tampon ou de production d’énergie de secours
• H01M 10/6568 - Liquides caractérisés par des circuits d'écoulement. p.ex. boucles, situés à l'extérieur des éléments ou des boîtiers des éléments

Abrégé

Disclosed are a power device and a photovoltaic power generation device. The power device comprises a case, a first power board, and a second power board, the first power board is arranged in the case, and a first boosting module and an inverter module are arranged on the first power board; the second power board is arranged in the case, the second power board is electrically connected to the first power board, and a second boosting module is arranged on the second power board. According to the technical solution of the present invention, the rated power generation power of the photovoltaic power generation device can be increased, and the flexibility for clients is improved.

Classes IPC  ?

• 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
• H05K 7/14 - Montage de la structure de support dans l'enveloppe, sur cadre ou sur bâti
• 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

Abrégé

Provided in the present application are a string-type inversion-boost all-in-one machine and a power station system. The string-type inversion-boost all-in-one machine comprises: a low-voltage switch, a boost device, and a plurality of string inversion units, wherein each string inversion unit, the low-voltage switch and the boost device are all arranged on a platform of the string-type inversion-boost all-in-one machine; an alternating-current side of each string inversion unit is electrically connected to the boost device by means of a low-voltage alternating-current bus and a low-voltage switch cabinet in sequence; and a direct-current wiring area of each string inversion unit is arranged on the outer side of the string-type inversion-boost all-in-one machine. Therefore, an inverter and the boost device are integrated together, and the onsite wiring of the string-type inversion-boost all-in-one machine is convenient and simple.

Classes IPC  ?

• 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

Abrégé

Disclosed in the present invention are a pressure relief device and electrical equipment. The pressure relief device comprises a first housing and a second housing which are mutually covered and arranged, and fasteners used for connecting the first housing and the second housing; a mounting via hole is formed in the first housing; a connecting hole corresponding to the mounting via hole is formed in the second housing. A fastening assembly connects the mounting via hole and the connecting hole. First locking structures and second locking structures spaced apart from each other are matched and formed between the fastening assembly and the first housing; in an initial state, the first locking structures stop the first housing in a direction away from the second housing, and under impact of external force, the first locking structures are damaged, and the second locking structures stop the first housing in a direction away from the second housing. The technical solution of the present invention can reduce the possibility that the assemblies of the pressure relief device are exploded due to explosion, and guarantee the safety of peripheral equipment and personnel.

Classes IPC  ?

• H02B 1/26 - Enveloppes; Leurs parties constitutives ou accessoires à cet effet

Abrégé

Disclosed in the present invention are an electronic element and a high-frequency winding thereof. At least one power transmission line of the high-frequency winding is a multi-layer stranded wire, the multi-layer stranded wire comprises at least two stacked layers of cables, and each layer of the cables comprises a plurality of cables which are sequentially arranged; and any layer of the cables in the multi-layer stranded wire is at least stranded with an adjacent layer of cables, a cross section obtained by cutting the multi-layer stranded wire in any plane perpendicular to the lengthwise direction of the power transmission line comprises cross sections of a plurality of layers of cables, which layers are stacked in a first direction, the cross section of each layer of the cables comprises cross sections of a plurality of cables, which are sequentially arranged in a second direction, and the first direction is perpendicular to the second direction. The structural design of the high-frequency winding can effectively reduce the deformation and wear of a paint film, thereby reducing high-frequency resistance.

Classes IPC  ?

• H01F 27/28 - Bobines; Enroulements; Connexions conductrices

Abrégé

A noise reduction assembly includes an outer frame and a partition plate. An accommodating cavity is arranged in the outer frame; the partition plate is arranged in the accommodating cavity, and the partition plate and the outer frame form a noise reduction channel, the noise reduction channel includes a first noise reduction section, a second noise reduction section and a third noise reduction section that are communicated in sequence, and the channel cross-sectional areas of the first noise reduction section and the third noise reduction section are both smaller than the channel cross-sectional area of the second noise reduction section. The technical solution of the present application may reduce the noise of a new energy equipment having the noise reduction assembly during operation.

Classes IPC  ?

• G10K 11/162 - Sélection de matériaux
• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage

Abrégé

The Disclosed in the present application are a power electronic device on a direct-current side of a photovoltaic system, and a test system and a control method therefor, achieving a simple, fast, and low-cost functional test on the power electronic device during a production process or a troubleshooting process of the power electronic device on the direct-current side of the photovoltaic system. The power electronic device is used for detecting a fluctuation of an electric signal parameter of an input end of the power electronic device; when the fluctuation meets a preset condition, the device is switched from a limited output state to a non-limited output state; the fluctuation of the electric signal parameter of the input end is generated by applying a disturbance to the input end of the power electronic device on the direct-current side of the photovoltaic system by a direct-current power supply having a disturbance output.

Classes IPC  ?

• H02S 50/10 - Tests de dispositifs PV, p.ex. de modules PV ou de cellules PV individuelles
• H02J 1/10 - Fonctionnement de sources à courant continu en parallèle

Abrégé

The present invention relates to a wiring structure and an electrical box, the wiring structure comprising a first mounting member and a second mounting member, wherein the first mounting member is used for being arranged outside the electrical box, and is provided with a plurality of conductive connectors; the conductive connectors extend into the electrical box to be connected to an internal device; the second mounting member is used for being detachably connected to the first mounting member, and is internally provided with a plurality of conductive fitting members; the conductive fitting members are connected to external cables; the external cables are slidably fitted with the second mounting member in a sealed manner; and the conductive fitting members are used for being connected to the conductive connectors in a fitting manner when the second mounting member is connected to the first mounting member in a fitting manner. The above wiring structure can achieve a fixed connection between a plurality of cables and the electrical box by means of a set of butt-connection structures, i.e. the first mounting member and the second mounting member, has a small size and a compact structure, and can improve the efficiency of plugging and mounting external cables and reduce errors; moreover, each of the conductive fitting members can be individually plugged and unplugged, and the operations are more flexible.

Classes IPC  ?

• H01R 13/642 - Moyens pour empêcher, bloquer ou éviter le couplage incorrect par la position ou la forme des pièces de contact
• H01R 13/40 - Fixation des pièces de contact dans ou sur un socle ou un boîtier; Isolement des pièces de contact

Abrégé

A medium-voltage grid-connected photovoltaic inverter system includes: a photovoltaic inverter, a medium-voltage transformer, a medium-voltage switch, and an inverter grid-connected controller. A direct current input terminal of the photovoltaic inverter is connected to a direct current bus. A low-voltage side of the medium-voltage transformer is connected to an alternating current output terminal of the photovoltaic inverter. An input terminal of the medium-voltage switch is connected to a high-voltage side of the medium-voltage transformer, and an output terminal of the medium-voltage switch is connected to a medium-voltage grid. A voltage sensor is integrated in the medium-voltage switch to detect a line voltage at the high-voltage side of the medium-voltage transformer and a line voltage at a side of the medium-voltage grid and generate a grid-connected voltage detection signal. The inverter grid-connected controller is connected to a controlled terminal of the medium-voltage switch and an output terminal of the voltage sensor.

Classes IPC  ?

• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

A fault diagnosis method and a diagnosis device provided in the present invention are applied to the technical field of photovoltaic power generation. The method includes: acquiring a high-irradiance IV data set and a low-irradiance IV data set of a diagnosis object, taking any one IV data set as a target IV data set, selecting, from the target IV data set, target IV data as inflection point data, taking the other IV data set as a reference IV data set, and selecting, from the reference IV data set, IV data having the same voltage value corresponding to the target IV data to serve as reference IV data. If the reference IV data also belongs to the inflection point data, a mismatch type of the diagnosis object is determined according to the target IV data and the result of the irradiation degree changing with the reference IV data. According to the present method, by analyzing the IV data under different irradiation conditions, whether the mismatch fault of the diagnosis object is a front current mismatch or a back current mismatch is determined, such that decoupling of a fault determination result of the diagnosis object is achieved, and the accuracy of fault diagnosis is improved.

Classes IPC  ?

• H02S 50/10 - Tests de dispositifs PV, p.ex. de modules PV ou de cellules PV individuelles

Produits et services

Accumulators, electric; Battery chargers; Batteries, electric; Capacitors; Photovoltaic apparatus for converting solar radiation to electrical energy; Inverters [electricity]; Electric control devices for energy management; Converters, electric; Solar panels for the production of electricity.

Produits et services

Capacitors; Inverters; Apparatus for converting electronic radiation to electrical energy, namely, photovoltaic solar modules; Batteries, electric; Battery chargers; Converters, electric; Electric accumulators; Electric control devices for energy management; Solar panels for the production of electricity

Abrégé

The present application relates to the technical field of vehicle-mounted charging, and provides a working mode switching control method and device for a vehicle-mounted charger, and a vehicle-mounted charger. The working mode switching control method for a vehicle-mounted charger comprises the following steps: obtaining a working mode switching signal of a vehicle-mounted charger, wherein the working mode switching signal comprises a switching signal for switching, in different power modules of the vehicle-mounted charger, the voltage of a direct-current bus controlled by means of an original power module to the voltage of a direct-current bus controlled by a power module to be started; according to the working mode switching signal of the vehicle-mounted charger, firstly controlling the power module to be started to start by using a current source control mode and adjusting a current given value according to a working condition until the required power of a system is borne; and controlling a control mode of the power module to be started to be switched to a voltage source control mode, and causing same to control the voltage of the direct-current bus. In the present invention, when the vehicle-mounted charger performs working mode switching, power supply interruption of a low-voltage end is avoided while the voltage stability of the direct-current bus is ensured.

Classes IPC  ?

• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries
• H02M 1/42 - Circuits ou dispositions pour corriger ou ajuster le facteur de puissance dans les convertisseurs ou les onduleurs

Abrégé

Provided are a photovoltaic system and a control method. A negative output end of a master DC/DC converter (101) is connected to an N line, and a negative input end of a master DC/AC converter (201) is connected to the N line; a negative input end of a slave DC/DC converter (102) is connected to the negative output end of the master DC/DC converter (101), and a positive input end of the slave DC/DC converter (102) is connected to a positive output end of the master DC/DC converter (101); a positive output end of the slave DC/DC converter (102) is connected to the N line, a negative output end of the slave DC/DC converter (102) is connected to a negative output end of a slave DC/AC converter (202), and a positive output end of the slave DC/AC converter (202) is connected to the N line; the master DC/AC converter (201) sends, to the slave DC/AC converter (202), a current instruction value, and an input voltage of the master DC/AC converter (201); and the slave DC/AC converter (202) controls an output current according to an input voltage of the slave DC/AC converter (202), the current instruction value, and the input voltage of the master DC/AC converter (201), such that the current of the N line is lower than a preset current, thereby reducing power consumption.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02S 40/30 - Composants 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
• H02M 1/36 - Moyens pour mettre en marche ou arrêter les convertisseurs
• H02M 7/5375 - 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 avec équipement particulier de démarrage
• 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

A medium-voltage grid-connected photovoltaic inverter system includes: a photovoltaic inverter, a medium-voltage transformer, a medium-voltage switch, and an inverter grid-connected controller. A direct current input terminal of the photovoltaic inverter is connected to a direct current bus. A low-voltage side of the medium-voltage transformer is connected to an alternating current output terminal of the photovoltaic inverter. An input terminal of the medium-voltage switch is connected to a high-voltage side of the medium-voltage transformer, and an output terminal of the medium-voltage switch is configured to be connected to a medium-voltage grid. A current sensor is integrated in the medium-voltage switch to detect a grid-connected current of the photovoltaic inverter system and output a current detection signal.

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
• 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 3/00 - Circuits pour réseaux principaux ou de distribution, à courant alternatif
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

Disclosed is an inverter module, comprising a housing and an inverter body mounted within the housing. The housing and the inverter body are joined to form a cooling channel. A fan is mounted in the cooling channel. An air inlet and an air outlet in communication with the cooling channel are provided on the housing. The cooling channel is distributed at two sides of the inverter body. In the inverter module described above, the housing and the inverter body are joined to form the cooling channel, and the cooling channel at least is distributed at either side of the inverter body, thus allowing a cooling airflow to cool the inverter body from either side, favoring the implementation of even cooling, and increasing the cooling effect. Also disclosed is an inverter cabinet, which is applicable for the inverter module described above and provides an excellent cooling effect.

Classes IPC  ?

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

Abrégé

A junction box and an inverter, relating to the technical field of electronic power supplies. The junction box (100) comprises a base (1), a box body (3), and a locking assembly (2), the base (1) being used to be fixed at a position to be installed, the box body (3) being connected to the base (1), the locking assembly (2) being slidably connected to the base (1), and the locking assembly (2) being provided with a guide clamping groove (2111), the guide clamping groove (2111) being able to slide laterally along the box body (3), so that the box body (3) is clamped into the guide clamping groove (2111). When it is necessary to mount the box body (3) onto the base (1), it is only necessary to place the box body (3) below the base (1) along the guide clamping groove (2111), and then cause the guide clamping groove (2111) to slide along a side direction of the box body (3), so that stable mounting of the box body (3) and the base (1) in a narrow installation space can be achieved; in addition, the structure is simple and easy to operate. The inverter, by means of arranging the junction box (100) on the inverter body (200), facilitates connection of a cable to the inverter body (200) in a narrow space.

Classes IPC  ?

• H02G 3/08 - Boîtes de distribution; Boîtes de connexion ou de dérivation
• 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

Abrégé

An inverter and a direct-current switch assembly. The direct-current switch assembly comprises a direct-current switch and a connecting terminal unit, the direct-current switch and the connecting terminal unit being integrated on a mounting main body, the connecting terminal unit can realize connection and disconnection of a first terminal and a second terminal by means of the direct-current switch, and the direct-current switch is directly connected to a direct-current cable by means of the first terminal. The direct-current switch and the connecting terminal unit of the present invention are integrally mounted, not requiring a cable connection, improving disassembly and installation efficiency while reducing the number of electric devices and structural parts in a machine box, and capable of saving mounting space in the machine box.

Classes IPC  ?

• H01H 1/58 - Connexions électriques avec ou entre contacts; Bornes
• 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

Abrégé

A photovoltaic assembly turnoff device, and a photovoltaic system. The rapid turnoff method includes: after receiving a start signal, a photovoltaic assembly turnoff device controls itself to be turned on, so that a photovoltaic assembly connected thereto achieves electric energy output; then, the photovoltaic assembly turnoff device can measure a state parameter thereof to determine whether a corresponding inverter channel in a photovoltaic system has a fault; if the corresponding inverter channel in the photovoltaic system has the fault, control the photovoltaic assembly turnoff device to be turned off, so that the photovoltaic assembly connected thereto stops the electric energy output; if the corresponding inverter channel in the photovoltaic system has no fault, always keep the photovoltaic assembly turnoff device to be turned on.

Classes IPC  ?

• 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
• H02H 1/00 - CIRCUITS DE PROTECTION DE SÉCURITÉ - Détails de circuits de protection de sécurité

Abrégé

Disclosed in the present invention are a PV terminal assembly and an electrical device. The PV terminal assembly comprises a mounting frame and at least one PV terminal; the mounting frame is provided with mounting positions used for fixing PV terminals, and there are at least two mounting positions. In the PV terminal assembly disclosed in the present invention, the mounting frame is provided with mounting positions used for fixing PV terminals, and there are at least two mounting positions, so that at least two PV terminals can be integrated on the mounting frame. The number of PV terminals on the whole PV terminal assembly can be adjusted by adjusting the number of PV terminals on the mounting frame; thus, the expandability and compatibility are improved, the whole electrical device can be compatible with a variety of input configurations, and the development efficiency is improved. Moreover, the space occupied by all the PV terminals can be reduced, thereby reducing the size of the whole electrical device; installation of the PV terminals is also simplified, thereby improving the installation efficiency.

Classes IPC  ?

• H01R 9/26 - Blocs de connexion à accrochage pour le montage côte à côte sur rail ou sur barrette

Abrégé

A medium voltage grid-connected photovoltaic inverter system and a photovoltaic power generation system including the same are provided. The medium voltage grid-connected photovoltaic inverter system includes a photovoltaic inverter, a medium voltage transformer, a switchgear, and an inverter grid-connected controller. A low voltage side of the medium voltage transformer is connected to an alternating current output terminal of the photovoltaic inverter. An input terminal of the switchgear is connected to a high voltage side of the medium voltage transformer, and each phase of the switchgear includes two output terminals each for being connected to another switchgear. The inverter grid-connected controller is connected to a controlled terminal of the switchgear, and is configured to control the switchgear to switch off/on, so that the medium voltage grid-connected photovoltaic inverter system is disconnected from or connected to a grid.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H02J 3/40 - Synchronisation d'un générateur pour sa connexion à un réseau ou à un autre générateur
• 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 9/06 - Circuits pour alimentation de puissance de secours ou de réserve, p.ex. pour éclairage de secours dans lesquels le système de distribution est déconnecté de la source normale et connecté à une source de réserve avec commutation automatique
• G01R 19/00 - Dispositions pour procéder aux mesures de courant ou de tension ou pour en indiquer l'existence ou le signe

Abrégé

A high voltage battery cluster, and an overcurrent protection circuit and a switch box of the high voltage battery cluster are provided. The overcurrent protection circuit includes a first fusing module and a second fusing module. Since a withstand current-time curve of the first fusing module is different from a withstand current-time curve of the second fusing module, in a case that an overcurrent fault occurs in a high voltage battery cluster, one fusing module can cause an open circuit in the high voltage battery cluster prior to another fusing module, thereby preventing the high voltage battery cluster from being broken by a large current when an overcurrent fault occurs in the high voltage battery cluster, thus ensuring an electrical safety of the high voltage battery cluster.

Classes IPC  ?

• H02H 3/087 - Circuits de protection de sécurité pour déconnexion automatique due directement à un changement indésirable des conditions électriques normales de travail avec ou sans reconnexion sensibles à une surcharge pour des systèmes à courant continu
• B60L 3/00 - Dispositifs électriques de sécurité sur véhicules propulsés électriquement; Contrôle des paramètres de fonctionnement, p.ex. de la vitesse, de la décélération ou de la consommation d’énergie
• H02J 7/00 - Circuits pour la charge ou la dépolarisation des batteries ou pour alimenter des charges par des batteries

Abrégé

A power conversion apparatus. An additional heat capacity apparatus thereof is connected to a heating body by means of a low-heat-resistance channel, and the heat capacity of the heating body is increased, so that a temperature rise rate of the heating body can be reduced when the temperature of the heating body rapidly rises due to large transient loss, thereby lowering the temperature of the heating body at the end of the short-time peak working condition, and ensuring the reliability of a device. Moreover, a high-performance switch tube or more switch tubes connected in parallel are not required to be used as in the prior art, so that the size and the weight of the system are reduced, and the costs are saved.

Classes IPC  ?

• H05K 7/20 - Modifications en vue de faciliter la réfrigération, l'aération ou le chauffage
• H02M 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique

Abrégé

A photovoltaic system and a communication method therefor. The communication method includes: each slave sends a report signal to a host, and monitors a response signal of the host; and if the at least one slave receives the response signal, the corresponding slave executes a corresponding action on the basis of the response signal. Therefore, communication between the host and each slave is achieved in a mode that each slave actively sends the report signal, the host is prevented from adopting a roll call query mode, and occupation of bus resources by the host is reduced.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H04B 3/54 - Systèmes de transmission par lignes de réseau de distribution d'énergie
• H02S 40/36 - Composants électriques caractérisés par des moyens d'interconnexions électriques spéciaux entre plusieurs modules PV, p.ex. connexion électrique module à module
• H04L 12/40 - Réseaux à ligne bus

Abrégé

The present application provides a photovoltaic power generation system and a control method therefor, and a power converter. The control method for the photovoltaic power generation system comprises: first obtaining the MLPE state characterization information of a photovoltaic string, and then determining, according to the MLPE state characterization information, whether there is at least one MLPE device that is not in a normal output state in the photovoltaic string; and if there is at least one MLPE device that is not in the normal output state in the photovoltaic string, controlling the current of the corresponding string to be less than a preset threshold. Therefore, the power consumption of the corresponding MLPE device in a bypass operation state is reduced, so that the MLPE device can use a bypass diode having smaller power capacity and a heat dissipation measure with a lower heat dissipation requirement during design, and the system cost is reduced.

Classes IPC  ?

• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs
• H01L 31/044 - Modules PV ou matrices de cellules PV individuelles comprenant des diodes de dérivation

Abrégé

The present invention relates to the technical field of electrical apparatuses, and discloses a cabinet and a cabinet system. The cabinet comprises a cabinet body (1), a cabinet door (2) and a protruding structure (3), wherein the cabinet door (2) is arranged on the cabinet body (1), one end of the cabinet door (2) is rotatably connected to the cabinet body (1), the other end of the cabinet door is a free end, and the cabinet door (2) can be opened or closed; the protruding structure (3) is arranged on an outer side of the cabinet door (2), the end of the protruding structure (3) close to the free end of the cabinet door (2) is rotatably connected to the cabinet door (2), and the end of the protruding structure (3) away from the free end of the cabinet door (2) is detachably connected to the cabinet door (2). When a plurality of mechanisms work side by side, the end of the protruding structure (3) away from the free end of the cabinet door (2) can be detached and opened first, and the protruding structure is then rotated by a certain angle around the end which is rotatably connected to the cabinet door (2), so as to avoid the situation where the cabinet door (2) cannot be opened due to the interference of the protruding structures (3) on adjacent cabinets.

Classes IPC  ?

• H05K 5/02 - Enveloppes, coffrets ou tiroirs pour appareils électriques - Détails

Abrégé

The present invention relates to the technical field of photovoltaic power generation, and discloses a case and a photovoltaic communication device. The case comprises a case body, a case door and at least two sealing members. At least two accommodating cavities are provided in the case body, and when the case door is locked on the case body, the accommodating cavities may be sealed by means of the sealing members, respectively. The case seals a plurality of accommodating cavities by means of the case door and a plurality of sealing members respectively, which may reduce the number of case doors and corresponding parts, simplify the assembly steps of the case, and reduce fabrication costs and maintenance costs of the case door.

Classes IPC  ?

• H05K 5/00 - Enveloppes, coffrets ou tiroirs pour appareils électriques

Produits et services

Electronic circuits; inverters for power supply; photovoltaic inverters; modules for photovoltaic power generation; photovoltaic cells; crystalline silicon solar cells; solar modules; photovoltaic apparatus and installations for generating solar electricity; photovoltaic solar panels for the production of electricity; solar panels for the production of electricity.

Abrégé

Provided are an energy conversion system, an over-temperature operation control method thereof, and a control apparatus (00), comprising: in accordance with the operating temperatures of at least two power modules, determining an over-temperature module and at least one non-over-temperature module; obtaining a derated operating power and a power derating difference value for the over-temperature module, and, in accordance with the power derating difference value, determining at least one increased-rating operating power, wherein the increased-rating operating power corresponds one-to-one to a non-over-temperature module; on the basis of the at least one increased-rating operating power, determining whether the system satisfies a preset no-derating operating condition; if the system satisfies the preset no-derating operating condition, then driving the over-temperature module to operate in accordance with the derated operating power, and driving the non-over-temperature module(s) to operate in accordance with the increased-rating operating power. By reducing the operating power of the over-temperature module, the temperature thereof is lowered, and by increasing the operating power of a non-over-temperature module, the overall power of the system can be kept unchanged, which is beneficial to improving system safety performance and power generation.

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 1/32 - Moyens pour protéger les convertisseurs autrement que par mise hors circuit automatique
• H02J 3/38 - Dispositions pour l’alimentation en parallèle d’un seul réseau, par plusieurs générateurs, convertisseurs ou transformateurs

Abrégé

The present invention relates to the technical field of low-voltage power distribution systems, and in particular relates to a fuse-switch-disconnector assembly. The fuse-switch-disconnector assembly comprises at least one fuse-switch-disconnector. The fuse-switch-disconnector comprises an isolating switch and a fuse assembly that are detachably connected. The fuse assembly comprises a fuse and a protective box used for accommodating the fuse. The protective box is provided with a heat dissipation channel that dissipates heat from the fuse, and the protective box is further provided with a transparent window by means of which the state of the fuse can be observed. The fuse-switch-disconnector assembly may ensure that the normal operation of other circuits will not be affected when the fuse of a certain circuit is replaced. Moreover, the detachable connection between the isolating switch and the fuse assembly may facilitate the replacement of the fuse assembly, and by means of the transparent window, the fuse may be visualized and the state of the fuse may be promptly observed.

Classes IPC  ?

• H01H 89/00 - Combinaisons de plusieurs types d'interrupteurs électriques, de relais, de sélecteurs et de dispositifs de protection d'urgence, non couvertes par un des autres groupes principaux de la présente sous-classe
• H01H 85/47 - Moyens de refroidissement
• H01H 85/20 - Socles pour supporter le fusible; Leurs pièces détachées
• H01H 71/02 - Boîtiers; Enveloppes; Socles; Garnitures

Abrégé

A new-energy charging system, and an alternating-current charging pile and a charging method thereof. The charging method comprises: when an alternating-current charging pile is in a power-following mode, measuring an available input power of a system where the alternating-current charging pile is located; when the available input power is greater than or equal to a single-phase threshold value and is less than a three-phase threshold value, controlling the alternating-current charging pile to provide single-phase charging for an electric vehicle by means of a charging gun of the charging pile itself; and when the available input power is greater than or equal to the three-phase threshold value, controlling the alternating-current charging pile to provide three-phase charging for an electric vehicle by means of the charging gun of the charging pile itself. In the charging method, the output power of an alternating-current charging pile is adjusted by means of adjusting the number of charging phases, such that the output power of the alternating-current charging pile follows an available input power, thereby achieving the optimal energy efficiency and also achieving carbon balance.

Classes IPC  ?

• B60L 53/62 - Surveillance et commande des stations de charge en réponse à des paramètres de charge, p.ex. courant, tension ou charge électrique
• B60L 53/64 - Optimisation des coûts énergétiques, p.ex. en répondant aux tarifs d'électricité
• H02J 3/28 - Dispositions pour l'équilibrage de charge dans un réseau par emmagasinage d'énergie