An embodiment of this rotor comprises: a rotor core that extends along a central axis; and a pair of fans attached to respective end faces of the rotor core, the end faces facing both axial-direction sides of the rotor core. With regard to the fans attached to respective end faces of the rotor core, the direction in which one end face is oriented is defined as one axial side, and the direction in which the other end face is oriented is defined as the other axial side. The fans include: a plate-shaped body part having a first surface facing toward one axial side and a second surface facing toward the other axial side; and a first rib and a second rib that extend along the body part in the circumferential direction. The body part has a first through-hole and a second through-hole that are arranged side by side in the circumferential direction and that each interconnect the first and second surfaces. The first surface has a first opening section in which the first through-hole opens and a second opening section in which the second through-hole opens. The first rib is located on a rim radially outside the first opening section and projects toward the one axial side. The second rib is located on a rim radially inside the second opening section and projects radially outward.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
A rotor according to one aspect of the present invention is rotatable about the central axis and comprises a rotor core and a fan disposed facing the rotor core in the axial direction. The rotor core has a ventilation hole penetrating through the rotor core in the axial direction. The fan has an opening disposed facing the ventilation hole. The rotor core is provided with a first rotation stopper. The fan is provided with a second rotation stopper that comes into contact with the first rotation stopper in the circumferential direction.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 1/32 - Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
3.
SEMICONDUCTOR MODULE AND SEMICONDUCTOR MODULE UNIT
A semiconductor module according to one aspect of the present disclosure comprises: a first substrate; a second substrate; and a third heat dissipation member. The first substrate is provided with a first semiconductor element on one main surface thereof and is provided with a first heat dissipation member on another main surface thereof. The second substrate: is disposed to face the first substrate; is provided with a second semiconductor element on one main surface facing the one main surface of the first substrate; and is provided with a second heat dissipation member on the another main surface. At least a portion of the third heat dissipation member is sandwiched by: a first electrode provided to the main surface of the first semiconductor element facing the second semiconductor element; and a second electrode provided to the main surface of the second semiconductor element facing the first semiconductor element.
H01L 23/40 - Mountings or securing means for detachable cooling or heating arrangements
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises an insulation substrate, a conductive layer, a semiconductor element, and a lead frame. The conductive layer is laminated on the insulation substrate and an electric circuit is patterned therein. The semiconductor element is laminated to the conductive layer with a conductive first joining member therebetween. The lead frame is laminated to the semiconductor element with a conductive and heat-fusing second joining member therebetween. The lead frame electrically connects the semiconductor element and the electric circuit. The lead frame has, at an end part of a bottom surface serving as the joining surface with the second joining member, a notch that receives the second joining member.
H01L 23/48 - Arrangements for conducting electric current to or from the solid state body in operation, e.g. leads or terminal arrangements
H01L 21/60 - Attaching leads or other conductive members, to be used for carrying current to or from the device in operation
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
5.
MOTOR CONTROL DEVICE, MOTOR MODULE, MOTOR CONTROL PROGRAM, AND MOTOR CONTROL METHOD
A motor control device according to one aspect of the present disclosure comprises: an inverter circuit having an upper arm and a lower arm in each phase of three phases; a conduction control unit that controls conduction of the upper arm and the lower arm of each phase of the three phases in the inverter circuit; and a determination unit that determines switching from a two-phase modulation scheme, in which two phases among the three phases are set as PWM phases that are PWM controlled and the remaining one phase is set as a fixed phase where either the upper arm or the lower arm is always turned on, to a 120-degree energization scheme, in which two phases among the three phases are set as energization phases and the remaining one phase is set as a non-energization phase. The conduction control unit is provided with a switching compensation unit that matches the on/off states of the upper arm and the lower arm in the energization phases of the two phases before and after the switching from the two-phase modulation scheme to the 120-degree energization scheme determined by the determination unit.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
One aspect of a power conversion device of the present invention comprises H-bridge circuits corresponding to respective phases of a motor, and an auxiliary circuit corresponding to at least one of the H-bridge circuits, wherein the auxiliary circuit includes: a first rectifying element and a first inductor connected in series between a first connection point and a third connection point; a second rectifying element and a second inductor connected in series between a second connection point and the third connection point; a third rectifying element and a third inductor connected in series between the first connection point and a fourth connection point; a fourth rectifying element and a fourth inductor connected in series between the second connection point and the fourth connection point; a fifth switch connected between a positive electrode of a power source and the third connection point; a fifth rectifying element having a negative electrode terminal connected to the third connection point, and a positive electrode terminal connected to a negative electrode of the power source; a sixth rectifying element having a negative electrode terminal connected to the positive electrode, and a positive electrode terminal connected to the fourth connection point; and a sixth switch connected between the negative electrode and the fourth connection point.
H02M 7/493 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
A coupling device 100 comprises a first member 10 and a coupling part 50. The first member 10 is provided with a first flow path and an attachment part 12. The coupling part 50 is provided with: a first cylinder part 60, which is provided with one end part that connects to a second cylinder part of a second member provided with a second flow path; and a placement part 70 which is disposed at the other end part of the first cylinder part 60 and which is attached to the attachment part 12. Movement of the placement part 70 with respect to the first member 10 is restricted in the axial direction AX of the first cylinder part 60. Movement of the placement part 70 with respect to the first member 10 is possible in the radial direction RA of the first cylinder part 60. The maximum outer diameter LA of the placement part 70 is less than the maximum outer diameter LB of the first cylinder part 60.
F16L 23/024 - Flanged joints the flanges being connected by members tensioned axially characterised by how the flanges are joined to, or form an extension of, the pipes
F16L 29/02 - Joints with fluid cut-off means with a cut-off device in one of the two pipe ends, the cut-off device being automatically opened when the coupling is applied
F16L 41/03 - Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
8.
METHOD FOR MANUFACTURING ROTOR, ROTOR, AND IPM MOTOR HAVING SAID ROTOR
[Solution] A method for manufacturing a rotor in which a magnet is held in a rotor core. This method for manufacturing a rotor includes: a magnet insertion step for inserting the magnet inside a magnet insertion hole in the rotor core; a rotor core holding step for using a plate, which has a pin insertion hole into which a swage pin can be inserted, to cover, from a lamination direction, at least a portion of an end face in the lamination direction of the rotor core in which the magnet has been inserted, and using the plate to press the rotor core in the lamination direction; and a swage step for using the swage pin, which has been inserted into the pin insertion hole, to swage the rotor core in the lamination direction so as to hold the magnet inside the magnet insertion hole. In the rotor core holding step, the rotor core is held in a state in which a relief portion into which the plastically-deformed steel plate enters is provided between the plate and a swage surface contacted by the swage pin. In the swage step, the rotor core in the state of being held by the plate is swaged in the lamination direction by the swage pin.
H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
One mode of a drive device according to the present invention comprises: a motor that includes a rotor capable of rotating about a central axis, and a stator facing the rotor in the radial direction; a sensor that is attached to the motor; an inverter that is electrically connected to the motor; and a housing that accommodates the motor and the inverter. The stator has a coil and a leader line extending from the coil toward one side in the axial direction. The inverter has a leader-line connector connected to the leader line. Included are a cable connector to which a power feeding cable extending from an external power source is connected, and a sensor connector to which a sensor wire extending from the sensor is connected. The housing includes an opening section opened outward of the central axis in the radial direction, and a through hole through which the power feeding cable passes. The opening section is disposed so as to overlap the leader-line connector, the cable connector, and the sensor connector in the radial direction of the central axis.
One aspect of this drive device comprises a motor, an inverter, and a housing. The motor has a rotor, a stator, and a bearing holder that holds a bearing. The housing includes: a cylindrical first housing member that surrounds the motor from the outside in the radial direction and houses the motor; and a second housing member that covers an opening on one axial-direction side of the first housing member, from the one axial-direction side of the first housing member. The inverter has a first substrate, a second substrate, and a sensor substrate that are positioned on one axial-direction side of the motor and that are connected to each other. The first substrate, the second substrate, and the sensor substrate are disposed in the stated order from the one axial-direction side to another axial-direction side. The first substrate and the second substrate are supported by the second housing member. The sensor substrate is supported by the bearing holder and has a rotation detection unit that detects rotation of the rotor.
One aspect of a drive device according to the present invention comprises a rotor, a stator, a housing, a bearing, and a bearing holder that is located on one side in the axial direction of the stator and that holds the bearing. The housing includes a cylindrical inner tube section centered on the central axis, and an outer tube section. A flow path section is provided between the inner tube section and the outer tube section. The bearing holder includes: a disc-shaped body section centered on the central axis; a bearing holding part that holds the bearing; a first fastening part fixed to the inner tube section; and a protruding part that protrudes toward the other side in the axial direction from the surface of the body section facing the other side in the axial direction. The protruding part extends in the circumferential direction running along an imaginary circle centered on the central axis when viewed from the axial direction, and fits to the inner circumferential surface of the inner tube section. A first through hole, through which a lead wire extending from a stator coil is passed, is provided in the body section. The first through hole is disposed on an imaginary circle when viewed from the axial direction.
The present invention provides a rotor that is rotatable around a central axis and that includes a rotor core including a plurality of magnet holes and a channel through which a coolant flows, and a plurality of magnets accommodated in the respective plurality of magnet holes. The plurality of magnet holes and the channel each extend in an axial direction. The plurality of magnets include a first magnet and a second magnet. The plurality of magnet holes include a first magnet hole accommodating the first magnet and a second magnet hole accommodating the second magnet. The first magnet is disposed further on an outer side than the second magnet in a radial direction. The channel is a hole located between the first magnet and the second magnet in the radial direction and extending in a direction intersecting the radial direction.
One embodiment of a rotor core according to the present invention is a rotor core of a rotor rotatable about the central axis, said rotor core having a pair of first magnet holes adjacent to each other in the circumferential direction and a first hole portion positioned between the pair of first magnet holes in the circumferential direction. When viewed in the axial direction, the pair of first magnet holes extend in a direction in which the pair of first magnet holes are more apart from each other in the circumferential direction as heading from the radial inside to the radial outside. When viewed in the axial direction, the first hole portion is provided at a position overlapping with a first virtual line that passes through the center between the pair of first magnet holes in the circumferential direction and extends in the radial direction, and has a shape that is asymmetrical across the first virtual line.
A drive device according to an embodiment of the present invention comprises: a motor having a rotor that is rotatable about a motor axis and a stator that surrounds the rotor from the radially outer side; and a housing having a cylindrical circumferential wall that surrounds the motor from the radially outer side and a cover that covers an opening on one axial side of the circumferential wall. The rotor has a cylindrical motor shaft that has a hollow part. The housing has a storage part that can store a fluid, a first flow channel that extends from the storage part to the cover, a second flow channel that is provided to the cover and is connected to the first flow channel, third and fourth flow channels that are connected to the second flow channel and that can supply the fluid to the stator, and a fifth flow channel that is connected to the second flow channel and that can supply the fluid to the hollow part.
One embodiment of this pump-equipped motor comprises: a rotor that can rotate around a central axis; a stator that faces the rotor with a gap therebetween; a housing that has a motor accommodation section that internally accommodates the rotor and the stator; and a pump that has an intake port and is attached to the housing. The housing has a retention unit in which a liquid is retained, a pump accommodation section that internally accommodates at least part of the pump, and a connection channel unit that links the interior of the pump accommodation section and the interior of the retention unit. The intake port is located in the interior of the pump accommodation section.
A drive device according to one embodiment of the present invention comprises: a motor having a rotor that rotates about a motor axis, and a stator that surrounds the rotor; a housing having a cylindrical peripheral wall part that surrounds the motor from the radially outer side of the motor axis, and a cover part that covers an opening at one axial-direction side of the peripheral wall part; a fluid that is retained in a retention part within the housing; a first supply part that supplies the fluid to the motor, the first supply part being disposed within the housing; an inverter that supplies electric power to the motor; and a busbar that electrically connects the inverter and the stator, the busbar being positioned between the stator and the cover part in the axial direction. The housing is provided with a first flow path that extends from the retention part to the cover part, and a second flow path that passes through the interior of the cover part. The second flow path has a first end section linked to the first flow path, and a second end section linked to the first supply part. The busbar is disposed between the first end section and the second end section as seen from the axial direction. The second flow path is disposed at a position different than that of the busbar as seen from the axial direction.
One embodiment of the pump-equipped motor according to the present invention comprises: a rotor rotatable about the central axis; a stator facing the rotor with a gap interposed therebetween; a housing having a motor housing portion internally housing the rotor and the stator; the pump attached to the housing; and a filter through which a liquid sent by the pump passes. The housing has: a storage portion in which the liquid is stored; a pump housing portion that internally houses at least a part of the pump; and a connection flow path portion that connects the inside of the pump housing portion and the inside of the storage portion to each other. The filter is housed in the inside of the pump housing portion.
This rotor comprises: a columnar rotor core having a plurality of core sheets and a magnet insertion hole; and a magnet inserted into the magnet insertion hole. The plurality of core sheets have first core sheets and second core sheets that are laminated adjacent to the first core sheets in a magnet insertion direction and have an insertion portion constituting part of the magnet insertion hole. The first core sheets constitute part of the inner surface of the magnet insertion hole and have a projection portion that projects toward the inside of the insertion portion when viewing the rotor from the axial direction and makes contact with the magnet. The rotor has: a housing portion that is positioned, in the first core sheets or the second core sheets, in a direction opposite to the projection direction of the projection portion with respect to the projection portion when viewing the rotor from the axial direction; and a restriction member that is housed in the housing portion at a position in the opposite direction to the projection portion and restricts the displacement of the projection portion in the opposite direction.
A tactile sensation-imparting device A comprises a plate 50, a control unit, and a motor 100. The plate 50 has a lower surface 51 that is in contact with a surface of a wearer, and an upper surface 52. The control unit outputs a control signal including a plurality of waveforms indicating a change in voltage value. The motor 100 is disposed on the upper surface 52 of the plate 10, and vibrates on the basis of the control signal. Among the plurality of waveforms, the waveform in the first cycle has the largest amplitude. It is preferable that the amplitude of the waveforms in the second and subsequent cycles be equal to or more than 0.2 times the amplitude of the waveforms in the first cycle.
B06B 1/04 - Processes or apparatus for generating mechanical vibrations of infrasonic, sonic or ultrasonic frequency making use of electrical energy operating with electromagnetism
G06F 3/01 - Input arrangements or combined input and output arrangements for interaction between user and computer
20.
ROTOR, MOTOR COMPRISING SAME, AND ROTOR PRODUCTION METHOD
This rotor comprises: a cylindrical rotor core which has a plurality of core plates that are stacked in the thickness direction and a magnet insertion hole that extends in the axial direction; and a magnet which is inserted in the magnet insertion hole. The plurality of core plates include: a first core plate having a first through hole which constitutes part of the magnet insertion hole, a second through hole which is positioned to one side in the short direction of the first through hole with respect to the first through hole, and a holding part which is positioned between the first through hole and the second through hole and which holds the magnet inserted in the magnet insertion hole; and second core plate stacked in contact with the first core plate and positioned at an end part of the rotor core in the axial direction. The second core plate has a covering part which covers at least part of the holding part and the second through hole in the axial direction of the core plates. The covering part has a staking part which is recessed in the axial direction.
This stator comprises a stator core, an insulator, a coil, and a sensor unit. The sensor unit has a sensor disposed on the stator core through a sensor holder. The sensor holder holds the sensor. The sensor holder has a base portion, and a protruding portion. The base portion is disposed on an end surface of a tooth on one side in an axial direction, and the sensor is fixed to the base portion. The protruding portion protrudes from an end surface of the base portion on the other side in the axial direction toward the other side in the axial direction. The protruding portion engages with a periphery of a recess formed on the end surface of the tooth on the one side in the axial direction.
One embodiment of the stator core manufacturing method of the present invention has: a punching step for forming a belt-like core piece extending in a first direction by punching a metal sheet; and a laminating step for, when defining a direction orthogonal to the first direction as a second direction, curving the belt-like core piece by setting one side of the belt-like core piece in the second direction as the inner diameter side and laminating the belt-like core piece in a spiral shape to form a laminated body. The belt-like core piece has: a core back piece that extends in the first direction and is provided with a plurality of slits aligning in the first direction at the end portion on one side in the second direction; and a plurality of tooth pieces that extend in the second direction from the end portion of the core back piece on one side or the other side in the second direction between the slits. In each zone between the slits adjacent to each other in the core back piece, the end edge on the other side in the second direction is provided with a first arc portion, and the end edge on one side in the second direction is provided with a second arc portion. The first arc portion and the second arc portion extend in a concentric arc shape about the arc center positioned on one side in the second direction with respect to the core back piece.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
23.
DRIVE DEVICE, AND METHOD FOR MANUFACTURING DRIVE DEVICE
One embodiment of a drive device of the present invention comprises: a rotary electric machine having a rotor that rotates about a center axis; a gear part that is connected to the rotary electric machine on one axial side of the rotary electric machine; a housing that accommodates the rotary electric machine and the gear part; and a fluid that circulates within the housing. The housing has: a first accommodation part that accommodates the rotary electric machine; a second accommodation part that accommodates the gear part; and a partition wall part located between the first accommodation part and the second accommodation part. Provided in the partition wall part is a through-hole that connects an internal space of the first accommodation part and an internal space of the second accommodation part. The first accommodation part has a bottom section located on the underside of the rotary electric machine. At least a portion of the bottom section radially faces the rotary electric machine, and the bottom section has a first surface and a second surface which are aligned in a circumferential direction. The first surface is located radially outside the second surface. The first surface and the second surface are each inclined radially outward toward one axial side, and are connected on an inside edge of the through-hole at one axial end thereof.
A drive device according to an aspect of the present invention comprises: a motive power transmission unit coupled to a rotary electrical machine on one side in the axial direction of the rotary electrical machine; and a housing that houses the rotary electrical machine and the motive power transmission unit. The housing has a gear cover that is positioned on one side in the axial direction of the motive power transmission unit and that supports a shaft of the motive power transmission unit. The gear cover has a dome part that projects to one side in the axial direction and that has the center at a dome axis extending in the axial direction. The dome part has a top section through which the dome axis passes, and an inclination section that expands from the top section outward in the radial direction. The inclination section is inclined more to the other side in the axial direction as the distance from the top section outward in the radial direction becomes greater. An inclination angle with respect to a surface orthogonal to the dome axis becomes larger as the distance from the top section outward in the radial direction becomes greater.
This method for manufacturing a laminated iron core comprises: a punching step for punching a steel sheet so as to form a back-yoke-forming portion that extends in one direction, and a plurality of teeth that extend from the back-yoke-forming portion in a direction that intersects the one direction as seen in the thickness direction of the steel sheet; and a bending step for bending the back-yoke-forming portion that was formed in the punching step in an arc as seen in the thickness direction, so as to form a back yoke portion. In the punching step, a pair of protrusions are formed at tip portions of the plurality of teeth, said pair of protrusions respectively protruding toward one side and the other side in the width direction of the teeth, and, as seen in the thickness direction of the steel sheet, and a recess is formed in a portion of the plurality of teeth, in which portion the size of a gap between teeth that are positioned adjacent to each other is smaller than the size of the pair of protrusions in the width direction, said recess having a depressed region that is recessed in the width direction and is bigger than said protrusions.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
26.
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
The present invention comprises a rotor that is capable of rotating about a central axis, a stator that is disposed radially facing the rotor with a gap interposed therebetween, and a housing. The housing has a rotary electric machine accommodation unit that accommodates the rotor and the stator. The rotary electric machine accommodation unit has a peripheral wall part that radially surrounds the stator and a plurality of fixed parts to which the stator is fixed. The plurality of fixed parts include a first fixed part and a second fixed part that are adjacent to each other in the circumferential direction. The peripheral wall part is provided with: a first projection that surrounds the radial-direction outer side of the first fixed part, projects radially outward, and extends in the axial direction; a second projection that surrounds the radial-direction outer side of the second fixed part, projects radially outward, and extends in the axial direction; and a first side wall protrusion that projects radially outward to expand an internal space within the rotary electric machine accommodation unit radially outward and extends in the axial direction. The first side wall protrusion is positioned between the first projection and the second projection in the circumferential direction.
The present invention comprises: a motor having a rotor that is rotatable around a first axis; a gear part that transmits the power of the motor to an output shaft extending along a second axis parallel with the first axis; a housing that accommodates the motor and the gear part therein; and a holding part that rotatably holds the output shaft. The housing and the holding part are different portions of a single member. The housing has a first hole part through which the output shaft passes. The holding part has: a first flange part located closer to one axial side than the first hole part is and closer to the other axial side than the end part of the housing on the one axial side is, extending from the outside surface of the holding part to the radially outer side, and connecting to the outside surface of the housing; and a second hole part through which the output shaft passes. The first hole part and the second hole part face each other in the axial direction.
In one embodiment, an angle detection device of the present invention includes a sensor magnet attached to a rotating shaft of an N-phase motor (N is an integer of 3 or more) having a rotor magnet, M (M is an integer of 3 or more) magnetic sensors that detect changes in magnetic flux due to rotation of the sensor magnet, a storage device that stores a relational expression expressing the relationship between the output values of the M magnetic sensors and the mechanical angle of the rotating shaft, and a mechanical angle, which corresponds to at least one rotational position of the rotor magnet, as a level switching angle, and a processing device that calculates the mechanical angle on the basis of the output value and the relational expression and outputs N-phase pulse signals having a 360/N degree phase difference in electrical angle on the basis of the calculated value of the mechanical angle and the level switching angle, wherein the processing device switches the level of the pulse signal of any one phase of the N-phase pulse signals when the calculated value of the mechanical angle matches the level switching angle.
G01D 5/244 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains
A housing of this motor has a bearing holder for holding a bearing that rotatably supports a shaft. A magnet axially faces one axial end of the shaft, which is made of a magnetic material. A yoke is made of a magnetic material, and at least a portion of the yoke is disposed on one side of the magnet in the axial direction. A first contact portion of the housing is disposed radially outward relative to the magnet, and contacts at least a portion of the other axial end surface of the yoke. A second contact portion contacts at least a portion of one axial end surface of the yoke.
H02K 5/167 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using sliding-contact or spherical cap bearings
This motor comprises a rotor, a stator, a housing, an acceleration sensor, and a control unit. The rotor is rotatable about the central axis extending in the axial direction. The stator drives the rotor. The housing accommodates the rotor and the stator. The acceleration sensor detects an acceleration applied to the housing. The control unit controls electric conduction to the stator. The control unit performs a rotation speed change which is any one of: starting of rotation of the rotor; increasing and/or decreasing of the rotation speed of the rotor; and stopping of rotation of the rotor.
A41D 13/002 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment
A41D 13/005 - Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches with controlled internal environment with controlled temperature
F04D 25/08 - Units comprising pumps and their driving means the working fluid being air, e.g. for ventilation
A cooling device, according to one embodiment of the present disclosure, is for cooling heating elements, and comprises: a housing; a first flow path; and a second flow path. The housing has an inflow port and an outflow port for a refrigerant, and includes a first region which is in contact with a first heating element, and a second region which is in contact with a second heating element. The first flow path connects the inflow port and the outflow port, and overlaps with the first region and the second region in a planar view of the housing. The second flow path joins the first flow path at a position downstream of the first region and upstream of the second region. In addition, the second flow path has a guide portion for guiding the refrigerant, which flows through the second flow path, to the first flow path.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises a semiconductor device, a cooling plate, and a flow path forming member. The cooling plate is provided on one main surface of the semiconductor device. The flow path forming member: is provided on the other main surface opposite to the one main surface of the semiconductor device; includes a bottom member abutting on the other main surface, and lateral members standing upright from opposing ends of the bottom member; and forms a flow path for a refrigerant.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
A semiconductor module according to one aspect of the present disclosure comprises a first substrate, a second substrate, and a cooler. The first substrate is provided with a first semiconductor element on one main surface thereof, and is provided with a cooling plate on the other main surface thereof. The second substrate is disposed oppositely from the first substrate, is provided with a second semiconductor element on one main surface thereof that faces the one main surface of the first substrate, and is provided with a cooling plate on the other main surface thereof. The cooler is disposed between the first substrate and the second substrate and, at a heat transfer part, at least surfaces of the cooler which face the one main surface of the first substrate and the one main surface of the second substrate are covered with an insulation layer.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 23/427 - Cooling by change of state, e.g. use of heat pipes
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
35.
ROTOR, ROTARY ELECTRIC MACHINE, AND DRIVING DEVICE
One aspect of a rotor according to the present invention is a rotor which is disposed inside an annular stator and can rotate about a center axis line, the rotor comprising: a shaft extending along the center axis line; a rotor core fixed to the shaft; and an annular end plate which is provided with an insertion hole into which the shaft is inserted, and is disposed axially side by side with the rotor core. The shaft is provided with: a cavity part provided inside the shaft; and a through-hole which extends radially outside from the cavity part and is open in the outer circumferential surface of the shaft. The end plate has a first side surface facing one side in the axial direction. The first side surface is provided with a groove part having: a first end section connected to the opening of the through-hole; and a second end section located radially outside the first end section. The groove part has a first flow path section extending in a direction oblique to the radial direction. The second end section is located at the first flow path section.
The present invention comprises: a motor rotatable around a first axis; a gear unit that transfers a driving force of the motor to an output shaft extending along a second axis parallel to the first axis; a control unit arranged on one side with respect to the first axis in a first direction orthogonal to the first axis; a housing; a first auxiliary machine arranged on the other side with respect to the first axis in the first direction and on one side with respect to the first axis in a second direction orthogonal to the first direction; a second auxiliary machine arranged on the other side in the first direction and on the other side in the second direction with respect to the first axis; a first connection member connecting the control unit with the first auxiliary machine; and a second connection member connecting the control unit with the second auxiliary machine. Of the first auxiliary machine and the second auxiliary machine, one is a pump and the other is a cooler. The second axis is arranged on the one side with respect to the first axis in the second direction. A part of the first connection member is arranged between the first axis and the second axis. A part of the second connection member is arranged on the other side with respect to the first axis in the second direction.
In the present invention, one embodiment of a drive device comprises: a rotor having a shaft that extends along a center axis line; a stator opposing the rotor with a gap therebetween; a housing accommodating the rotor and the stator; and a resolver having a resolver rotor fixed to the shaft, and a resolver stator located radially outside the resolver rotor. The housing has a lateral wall part located axially on one side of the rotor. The lateral wall part has a tubular section inside which the resolver stator is held. The tubular section has: a first inner circumferential surface surrounding an outer circumferential surface of the resolver stator; a first surface that is connected to an end on one axial side of the first inner circumferential surface, and that faces the one axial side; a second surface that is connected to an end on the other axial side of the first inner circumferential surface, and that faces the other axial side; and one or more crimping sections provided to the first surface. The one or more crimping sections include a stopper part that protrudes radially inward with respect to the outer circumferential surface of the resolver stator and that makes contact with an end surface on one axial side of the resolver stator.
H02K 24/00 - Machines adapted for the instantaneous transmission or reception of the angular displacement of rotating parts, e.g. synchro, selsyn
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
One aspect of a rotating electric machine according to the present invention comprises: a rotor; a stator; a housing including a first accommodating portion accommodating the rotor and the stator therein; and a hollow tubular member extending in an axial direction and accommodated inside the first accommodating portion. A stator core includes a stator core body and at least one fixation portion protruding radially outward from an outer peripheral face of the stator core body. The at least one fixation portion comprises an upper fixation portion positioned on the upper side of a central shaft in the vertical direction. The upper fixation portion is positioned on one side in a circumferential direction of the tubular member. The tubular member includes a first opening that opens inside the first accommodating portion and is positioned on the upper side of the stator core body in the vertical direction. At least a part of the tubular member, when seen in the vertical direction, overlaps a tooth positioned on an uppermost side in the vertical direction among a plurality of teeth. An inner face of the first accommodating portion includes an opposing portion opposing a radially outer side of the upper fixation portion via a gap. The first opening opens toward the opposing portion.
In an aspect of the present invention, a motor comprises an annular stator core including a plurality of teeth portions extending along a radial direction and a plurality of conductor-connected bodies each including a plurality of conductors connected to each other. The conductor connected bodies are wave-wound along a circumferential direction of the stator core in each slot between the plurality of teeth portions. The plurality of conductor-connected bodies are arrayed in layers arranged in a radial direction in the slot. Among the layers in which the conductor-connected bodies are arranged in the slot, the radially outermost one is referred to as an outermost layer and the radially innermost one is referred to as an innermost layer. Each conductor-connected body includes a first terminal portion and a second terminal portion as both end portions. At least one of the plurality of first terminal portions and the plurality of second terminal portions is drawn from the outermost layer of the slot toward one side in an axial direction. At least one of the plurality of first terminal portions and the plurality of second terminal portions is drawn from the innermost layer of the slot toward the one side in an axial direction.
In one embodiment, this rotor is able to rotate about a central axis and comprises: a shaft extending in the axial direction; a rotor core fixed to the shaft; and an end plate arranged lined up in the axial direction with the rotor core. The shaft has a gap provided in the interior of the shaft, and a through hole connecting to the gap. The through hole has a first opening that opens on an outer peripheral surface of the shaft. The end plate has a first groove extending in the radial direction. The first groove has a second opening that opens on the reverse side from the side where the rotor core is located in the axial direction. A radially inward end of the first groove connects to the first opening. An inner surface of the first groove has a groove bottom surface located on the side where the rotor core is located in the axial direction. The groove bottom surface has a first surface that, going radially outward, draws increasingly apart from the rotor core in the axial direction.
This cooling unit has: a first cold plate and a second cold plate; an inflow pipe; and an outflow pipe. The first cold plate and the second cold plate are respectively disposed on both sides of a heat-generating component in a first direction. The inflow pipe allows refrigerant to flow into the first cold plate and the second cold plate. The refrigerant flowing out from the first cold plate and the second cold plate passes through the outflow pipe. At least a section of the first cold plate and at least a section of the second cold plate overlap in the first direction. At least a section of the inflow pipe and at least a section of the outflow pipe are disposed between the first cold plate and the second cold plate in the first direction.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
3422. The total number of high refractive index films 130a and low refractive index films 130b is an even number. For the high refractive index film 130a and the low refractive index film 130b of the antireflection layer 130, the ratio of the thickness of the thicker film to the thickness of the thinner film of two adjacent films is 6 times or less. The average reflectance of the antireflection layer 130 in a wavelength range of 300-400 nm is 40% or more.
One aspect of a rotor of the present invention has a plurality of magnetic poles arranged along the circumferential direction, a rotor core extending in a columnar shape centered on a central axis, and a plurality of magnets that are held in a magnet hole of the rotor core and form magnetic poles. A straight line passing through the center of the magnetic poles when seen axially is a d-axis. An outer circumferential surface of the rotor core, which faces radially outward, has a plurality of outer end portions located on the d-axis of the respective magnetic poles, and a plurality of retract portions, each of which is located between the outer end portions in the circumferential direction, and offset to a radially inner side relative to the outer end portions.
In a drive device according to an aspect of the present invention, a housing has a side wall, a holding cylindrical part, and a projecting part. The holding cylindrical part holds a bearing. The holding cylindrical part is provided with a first opening part penetrating in the radial direction of a third axis. The first opening part has an inlet end positioned on the outer circumferential surface of the holding cylindrical part. The inlet end opens on one side in a third direction. The projecting part is positioned at one side from the first opening part in the third direction and between a second axis and the third axis in a second direction. The projecting part has a first surface oriented to one side in the second direction and a second surface oriented to the other side in the second direction. The first surface receives a fluid scraped up by a gear, and guides the fluid to the first opening part. The second surface receives a fluid scraped up by a ring gear, and guides the fluid to the first opening part.
One aspect of this drive device according to the present invention comprises: a motor that has a rotor that rotates about a center axis and a stator that radially faces the rotor; a cylindrical water jacket that is centered about the center axis and opens on both sides in the axial direction; and a housing that contains the motor and the water jacket. The stator has an annular stator core obtained by helically laminating band-like plates. The water jacket is disposed on the radial inside of the housing. The water jacket has a shrink-fit part that holds the outer circumferential surface of the stator core.
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
H02K 1/20 - Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
One aspect of a drive device according to the present invention includes a motor including a rotor that can rotate around a central axis and a stator facing the rotor across a gap in a radial direction, a fan that rotates with the rotor, and a housing accommodating the motor. The stator includes an annular stator core and a coil mounted on the stator core. The coil includes a pair of coil ends respectively protruding in the axial direction from the end faces of the stator core at opposite sides thereof in the axial direction. The housing includes a water jacket externally surrounding the stator in the radial direction. The water jacket is provided with a plurality of fins on an inner circumferential surface of the water jacket, the fins being disposed on the outside of the coil ends in the radial direction. The fan includes an outlet that opens outward in the radial direction. The outlet, the coil ends, and the fins are juxtaposed in the radial direction.
One aspect of a drive device according to the present invention comprises a motor, a power transmission part, a housing, first and second bearings, and a flow path in which a fluid flows. An end part on one side in the axial direction of a first shaft of the motor has a connection opening in which a spline groove is provided. An end part on the other side in the axial direction of a second shaft of the power transmission part has a connection protrusion in which a spline projection is provided. The first shaft and the second shaft are connected by the spline groove and the spline projection meshing with each other. Provided to a partition wall of the housing is a communicating hole via which a motor chamber and a gear chamber are in communication. The inner peripheral surface of the communicating hole holds the first bearing and the second bearing. Between the axial direction of the second bearing and the first bearing in the communicating hole is provided a connection space into which the connection opening opens. The flow path has a first flow path that connects the gear chamber and the connection space and a second flow path that connects the connection space and the motor chamber.
A driving apparatus according to an aspect of the present invention comprises: a motor that rotates about a center axis; a shaft that rotates around the center axis by means of power of the motor; a first gear that is provided in the outer circumferential surface of the shaft; a second gear part that has a large-diameter gear engaged with the first gear and a small-diameter gear smaller in diameter than the large-diameter gear and that rotates around an intermediate axis, integrally with the large-diameter gear; a differential device that has a third gear engaged with the small-diameter gear and that rotates around a differential axis; and a parking mechanism that has a parking gear provided in the outer circumferential surface of the shaft, a parking pole, and a transmission part that transmits power to the parking pole. The parking gear is disposed between the motor and the first gear in an axial direction, and at least partially overlaps the large-diameter gear in the axial direction.
One embodiment of this drive device comprises: a motor having a first shaft; a power transmission unit having a second shaft; a housing; and a flow channel through which a fluid flows. The first shaft and the second shaft are mutually connected by engagement between a spline groove in a recess section and a spline protrusion of a protrusion section. The housing is provided with a dividing wall that partitions the interior of the housing into a motor chamber and a gear chamber. The dividing wall is provided with an interconnecting hole interconnecting the motor chamber and the gear chamber. An inner peripheral surface of the interconnecting hole holds a first bearing and a second bearing. An interconnecting space to which the recess section is open is provided in an interval in the axial direction between the first bearing and the second bearing in the interconnecting hole. The flow channel inlcudes: a first flow channel linking a first storage part to the interconnecting space; a second flow channel linking the interconnecting space to the inside of the recess section; and a third flow channel linking the interconnecting space to a second storage part.
This rotor is rotatable about the central axis and comprises: a rotor core; and annular conductive parts arranged at axially opposite sides of the rotor core. The rotor core has a plurality of flux barrier groups arranged at intervals along the circumferential direction. The plurality of flux barrier groups each include a plurality of flux barriers arranged radially side by side, and the plurality of flux barriers each have a shape protruding radially inward as viewed in the axial direction. One or more flux barriers, of the plurality of flux barriers in each of the flux barrier groups, have disposed thereinside conductor bodies electrically connected to the annular conductive parts. As viewed in the axial direction, when the half of the outer diameter of the rotor core is defined as Ror, the half of the outer diameter of the annular conductive parts is defined as Roer, and the minimum distance from the central axis line to the radially outermost one of the flux barriers which have disposed thereinside the conductor bodies is defined as Rocb, the relation of Rocb
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 21/14 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
In a rotor according to one aspect of the present invention, a shaft has: a first shaft hole that extends in the axial direction; and a second shaft hole that extends from the first shaft hole radially toward the outside and opens on the outer circumferential surface of the shaft. A rotor core has a plurality of core holes that extend in the axial direction and are disposed at intervals therebetween in the circumferential direction. A plate has through-holes that overlap the core holes as seen from the axial direction, and a flow path section that joins the second shaft hole and the through-holes. A second distance from the center axis to the outer edge of the plate is less than a first distance from the center axis to the outer edge of the rotor core.
A motor control device according to one aspect of the present disclosure comprises an inverter circuit, a conduction control unit, and a determination unit. The inverter circuit has an upper arm and a lower arm for each of three phases. The conduction control unit controls the conduction of the upper arm and the lower arm in each phase of three phases in the inverter circuit. The determination unit determines the switching of a 120 degree conduction method, in which two of the three phases are conductive phases and the remaining one phase is a non-conductive phase, to a two phase modulation method in which two of the three phases are PWM phases that are PWM-controlled and the remaining one phase is a fixed-phase in which any one of the upper arm and the lower arm is always on. The conduction control unit includes a switching compensation unit which matches, with each other, on/off states of the upper arm and the lower arm in the same phase before and after the switching from the 120-degree conduction method to the two-phase modulation method, which is determined by means of the determination unit.
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
53.
MOTOR CONTROL DEVICE, MOTOR MODULE, MOTOR CONTROL PROGRAM, AND MOTOR CONTROL METHOD
The motor control device according to one embodiment of the present disclosure comprises an inverter circuit, a section determination unit, and a conduction control unit and controls a motor by a 120-degree energization method or a 180-degree energization method. The inverter circuit has an upper arm and a lower arm for each of three phases. The section determination unit determines a section according to an electrical angle of the motor among a plurality of sections divided by ranges having electrical angles of the motor different from each other. The conduction control unit controls, on the basis of the section determined by the section determination unit, the conductions of the upper arms and lower arms of the plurality of energization phases of the inverter circuit. The conduction control unit is provided with a section switching compensation unit that performs processing for, when switching to the section determined by the section determination unit, suppressing the negative current of an energization phase having the highest voltage or the positive current of an energization phase having the lowest voltage among the plurality of energization phases in the switching destination section.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
This motor comprises a rotor and a stator. The rotor rotates about a rotary shaft. The stator is disposed radially outside of the rotor. The stator has a stator core and a coil. The stator core has a core back and teeth. The core back has a cylindrical shape which surrounds the rotary shaft and extends in the axial direction thereof. The plurality of teeth extend radially inside from the core back and are disposed in the circumferential direction of the stator core. The coil is formed by winding a conductive wire around the teeth. The diameter of the conductive wire is 1.32-1.50 mm inclusive.
One embodiment of the drive device of the present invention comprises a motor, a fan rotating together with the rotor of the motor, a bearing, and a housing for housing the motor. The rotor is provided with a blast hole penetrating in the axial direction. The fan has: a cylindrical cylinder portion centered on the central axis line; and an inlet positioned on the inside of the cylinder portion in the radial direction and connecting to the blast hole. The housing has: a base portion covering the motor from one side in the axial direction; and a cylindrical holding portion projecting from the surface of the base portion on the other side in the axial direction to the other side in the axial direction. The bearing is held on the inside of the holding portion in the radial direction. The holding portion is positioned on the inside of the cylinder portion in the radial direction. At least parts of the holding portion and the cylinder portion are overlapped with each other in the axial direction. The base portion has a tilted surface that faces the other side in the axial direction and tilts to the other side in the axial direction toward the inside in the radial direction.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
56.
PARKING DEVICE, DRIVE DEVICE, AND METHOD FOR MANUFACTURING DRIVE DEVICE
One aspect of a drive device of the present invention is a parking device for locking rotation of one shaft of a power transmission part disposed inside a housing, the parking device comprising a parking mechanism disposed inside the housing, and an actuator which has a rotary part rotating around a drive axis and is disposed outside the housing. The parking mechanism comprises a parking gear mounted on an outer circumferential surface of the shaft, a parking pole, and a transmission part which has a rotation shaft connected to the actuator, and transmits a drive force of the actuator to the parking pole. The rotary part has a cylindrical-shaped cylinder part which has an inner circumferential surface with a plurality of spline grooves extending in an axial direction of the drive axis, and a first surface oriented to one side in the axial direction of the drive axis. The rotation shaft has a first end part, which has an outer circumferential surface with a plurality of spline protrusions extending in the axial direction of the drive axis and is inserted into the cylinder part, and a second surface opposing the first surface.
B60T 1/06 - Arrangements of braking elements, i.e. of those parts where braking effect occurs acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission
F16H 57/023 - Mounting or installation of gears or shafts in gearboxes, e.g. methods or means for assembly
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
One aspect of the present invention relates to a drive device comprising: a motor having a rotor rotatable about a central axis and a stator; an inverter disposed on one side of the motor in the axial direction and connected to the motor; a power transmission unit disposed on the other side of the motor in the axial direction; and a housing having a motor accommodation space, an inverter accommodation space, and a gear accommodation space. The power transmission unit has a reduction gear that transmits the power of the motor and a differential gear that outputs, from an output shaft, the power transmitted from the reduction gear. The housing has a plurality of mounting portions that are fixed to a vehicle body. The mounting portions each have a first mounting portion, a second mounting portion, and a third mounting portion. The first mounting portion is disposed on the other side of the motor in the axial direction. The second mounting portion is disposed on the one side of the motor in the axial direction. The gear accommodation space has a differential gear accommodation space that accommodates the differential gear. The third mounting portion is provided in the portion of the housing which surrounds the differential gear accommodation space.
A power conversion device according to an aspect of the present disclosure comprises a base plate; a substrate on the base plate; a heating element and a temperature sensor provided on the substrate; and a control unit, and is connected to a load. The control unit comprises: a heat quantity calculation unit that calculates a heat quantity of the heating element on the basis of information related to a load; a coolant temperature calculation unit that calculates the temperature of a coolant on the basis of a flow rate of the coolant cooling the heating element; a thermal resistance calculation unit that calculates a resistance value of thermal resistance in a thermal model that indicates, as the thermal resistance, heat transfer between two different sites among the heating element, the base plate, the substrate, and the coolant, on the basis of the flow rate and the temperature of the coolant; a base plate temperature calculation unit that calculates the temperature of the base plate on the basis of the heat quantity and the thermal resistance; and a heating element temperature calculation unit that calculates the temperature of the heating element on the basis of the heat quantity and the temperature of the base plate.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
G01K 1/14 - Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
G01K 7/00 - Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat
H02M 1/00 - APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF - Details of apparatus for conversion
This motor comprises a rotor and a stator disposed radially inward of the magnet of the rotor. The outer diameter of the core back of the stator is 163.0-175.4 [mm] inclusive. The minimum width of the radially inner edge portion of teeth on which a coil unit is disposed is 4.50-5.98 [mm] inclusive in a direction perpendicular to the axial direction and the radial direction.
H02K 21/22 - Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
An electric power converting device (10) according to one aspect of the present invention comprises a first three-phase full-bridge circuit (11) connected to one end of each of three-phase coils of an open winding type three-phase motor (20), a second three-phase full-bridge circuit (12) connected to the other ends of the three-phase coils, and a control unit (13) for individually controlling voltage application times of the three-phase coils by controlling the first three-phase full-bridge circuit and the second three-phase full-bridge circuit using pulse width modulation, wherein the control unit (13): minimizes a width of a first time region, within one control cycle of the pulse width modulation, in which the voltage application time of an X-phase coil, having the maximum current value among the three-phase coils, and the voltage application time of a Y-phase coil, having the second largest current value among the three-phase coils, overlap one another; and, on the basis of target voltage application time durations of each of the X-phase coil, the Y-phase coil, and a Z-phase coil, having the minimum current value among the three-phase coils, and a current direction in the Z-phase coil, changes a position of a second time region occupied by the voltage application time of the Z-phase coil in one control cycle.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02M 7/493 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode the static converters being arranged for operation in parallel
H02P 27/08 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters with pulse width modulation
61.
STATOR CORE MANUFACTURING METHOD, STATOR CORE, AND MOTOR
This stator core manufacturing method includes: a distortion prevention hole forming step for forming, in a steel plate, first distortion prevention holes and second distortion prevention holes; a cut line forming step for, by pressing, in the thickness direction of the steel plate, at least part of divided core piece forming regions of the steel plate where divided core pieces are to be formed, forming cut lines that constitute parts of the outer circumferences of the divided core piece forming regions and that connect the first distortion prevention holes and the second distortion prevention holes formed in the steel plate; and a push-back step for returning, to original positions of the steel plate, portions of the divided core piece forming regions pressed in the thickness direction in the cut line forming step.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
This heat dissipation member comprises: a plate-shaped base part that extends in a first direction, which is along the direction in which a coolant flows, and in a second direction, which is orthogonal to the first direction, and that has a thickness in a third direction, which is orthogonal to the first direction and the second direction; and a fin that protrudes from the base part and toward one side in the third direction. The fin has a flat sidewall part which extends in the first direction and the third direction, and the thickness direction of which is the second direction. The sidewall part has slits passing therethrough in the second direction. The number of slits per region divided into the same length in the first direction increases further toward one side in the first direction, which is the downstream side.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
63.
HEAT DISSIPATION MEMBER, COOLING DEVICE, AND SEMICONDUCTOR MODULE
This heat dissipation member can be installed on a liquid-cooled jacket, said heat dissipation member comprising: a plate-shaped base part which expands in a first direction running along the direction in which refrigerant flows and a second direction orthogonal to the first direction, and which has a thickness in a third direction orthogonal to the first direction and the second direction; one or a plurality of fin groups arranged so as to be lined up in the first direction, said groups being constituted by a plurality of fins which protrude from the base part toward one side in the third direction and which are arranged in the second direction; and a top panel section provided to end sections of the fins on one side thereof in the third direction. A third-directional gap is provided between the top panel section and the top surface of the liquid-cooled jacket which can be disposed on one side of the top panel section in the third direction. The top panel section has a plurality of first recesses that are arranged so as to be lined up in the first direction and that are recessed toward the other side of the top panel section in the third direction from the surface on the one side thereof in the third direction.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H01L 23/36 - Selection of materials, or shaping, to facilitate cooling or heating, e.g. heat sinks
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
64.
STATOR CORE MANUFACTURING METHOD, STATOR CORE, AND MOTOR
This stator core manufacturing method includes: a cut line forming step for pressing circumferential end parts of a plurality of divided core piece forming regions, at which divided core pieces are to be formed in a stator core plate forming region of a steel plate and which are arranged circumferentially, in the thickness direction of the steel plate, and thereby forming cut lines in only circumferential boundary portions of the plurality of divided core piece forming regions in the stator core plate forming region; and a push-back step for returning, to original positions of the steel plate, portions of the divided core piece forming regions pressed in the thickness direction in the cut line forming step.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
An aspect of a motor of the present invention comprises: a rotor rotatable about a central axis; and a stator opposed to the rotor in the axial direction. The rotor comprises: a frame yoke including a plurality of accommodation holes in a circumferential direction; a cover yoke provided on one side in the axial direction of the frame yoke; and a group of a plurality of magnets respectively accommodated in the plurality of accommodation holes, the other side of which in the axial direction is opposed to the stator. The group of a plurality of magnets comprises: a main magnet having a magnetization direction in the axial direction; and a plurality of sub magnets that are in contact with the main magnet, are arranged to surround at least a part of a periphery of the main magnet, and have a magnetization direction in the direction orthogonal to a contact surface of the main magnet.
H02K 1/2798 - Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor
H02K 1/22 - Rotating parts of the magnetic circuit
H02K 16/02 - Machines with one stator and two rotors
The rotor of this motor has a rim, a first cover member, a second cover member, and a rib member. The first cover member is disposed at one axial end of a cylindrical portion of the rim. The rib member includes a plurality of first rib members and/or a plurality of second rib members. The first rib members connect one axial side of the cylindrical portion and a peripheral plate part on one axial side of the rim. The second rib members connect the other axial side of the cylindrical portion and a peripheral plate part on the other axial side of the rim.
One aspect of a rotor of the present invention comprises: a rotor core having a plurality of magnet holes extending axially about a central axis, and a plurality of storage parts; a plurality of magnetic pole parts having magnets disposed in the magnet holes; and a magnetostrictive part that is disposed in the storage part with a gap between the magnetic pole parts, and has a relative magnetic permeability which varies with elastic deformation. The magnetostrictive part is disposed on the d-axis of the magnetic pole part on a radially outer side of the magnets, and extends in a circumferential direction.
This cooling device comprises a liquid-cooled jacket and a heat-dissipating member. The heat-dissipating member includes: a planar base portion that extends in a first direction along which refrigerant flows, and in a second direction orthogonal to the first direction, and that has a thickness in a third direction orthogonal to the first direction and the second direction; at least one fin that protrudes from the base portion toward one side in the third direction; and a top plate portion provided on one end of the at least one fin in the third direction. The liquid-cooled jacket includes: a first flow passage that extends in the first direction and in which the fin and the top plate portion are disposed; and a second flow passage that is connected to the first flow passage downstream thereof, and extends from the first flow passage toward the one side in the third direction. When viewed in the third direction, a connection plane in which the second flow passage and the first flow passage are connected overlaps the top plate portion. A heat-generating body is disposed from a position at which the second flow passage begins to extend toward the one side in the third direction to the most-downstream side of the base portion on the other side in the third direction.
H01L 23/473 - Arrangements for cooling, heating, ventilating or temperature compensation involving the transfer of heat by flowing fluids by flowing liquids
H05K 7/20 - Modifications to facilitate cooling, ventilating, or heating
69.
ROTOR CORE, ROTOR, AND ROTATING ELECTRICAL MACHINE
This rotor core can rotate about a central axis and comprises: a plurality of magnetic pole parts disposed at intervals in the circumferential direction; and a plurality of magnetic pole intermediate parts respectively positioned between the magnetic pole parts adjacent in the circumferential direction. Each of the plurality of magnetic pole intermediate parts has a through-hole group including a plurality of through-holes disposed at intervals in a radial direction. Each through-hole has an outer end positioned on the radial-direction outer edge of the rotor core, and the outer ends are respectively disposed on the plurality of magnetic pole intermediate parts in a first region and a second region disposed sandwiching the circumferential-direction center of the magnetic pole intermediate parts. The number of outer ends disposed in the second region is less than the number of outer ends disposed in the first region.
A rotary electric machine according to the present invention comprises: a rotatable shaft; a rotor; a stator; a plurality of bearing members that support the shaft; a housing that stores the shaft, the rotor, and the stator; and a first fixation member fixed to the housing. The housing has a cylindrical part having a first opening that is open toward one axial side, and a first lid member that closes the first opening. The stator has a first hole that is open toward one axial side, and is fixed to the cylindrical part. The bearing members are held on the first lid member. The first lid member has a first through-hole. The first fixation member has: a first body part that extends in the axial direction to be inserted into the first through-hole and that partially comes into contact with the inner circumferential surface of the first hole; and a first large diameter part positioned on one axial side of the first lid member. A first taper part is provided to the inner circumferential surface of the first through-hole. A second taper part is provided to the outer circumferential surface of the first large diameter part. The first taper part and the second taper part come into contact with each other.
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
71.
MOTOR CONTROL DEVICE, MOTOR MODULE, MOTOR CONTROL PROGRAM, AND MOTOR CONTROL METHOD
A motor control device according to an aspect of the present disclosure comprises an acquisition unit, a first conversion unit, a generation unit, a second conversion unit, and an adjustment unit. The acquisition unit acquires three phase current values which are detected values of three phase currents flowing to a motor. The first conversion unit converts the three phase current values into d-q axis current values. The generation unit generates three-phase voltage commands on the basis of a difference between the d-q axis current values and a d-q axis current command. The second conversion unit converts the d-q axis current command into a three-phase current command. The adjustment unit generates three phase voltage adjustment values for reducing a difference between the three-phase current command and the three phase current values, and adjusts the three-phase voltage commands on the basis of the generated three phase voltage adjustment values.
A semiconductor module according to one aspect of the present disclosure comprises a semiconductor chip and an electrode pattern. The semiconductor chip is provided on an insulating substrate fixed to a base plate. The electrode pattern is connected to a control pin extending from a case by being provided to the peripheral edge section on the insulating substrate and by being connected to an electrode pad of the semiconductor chip, and by the case being assembled to the base plate.
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
73.
SEMICONDUCTOR MODULE, POWER CONVERTER, AND METHOD FOR MANUFACTURING SEMICONDUCTOR MODULE
A semiconductor module according to one embodiment of the present disclosure is provided with a first substrate, a second substrate, and a conductive plate. At least one first semiconductor element and a first electrode which is connected to the first semiconductor element are arranged on one main surface of the first substrate. The second substrate is arranged to be opposed to the first substrate, and at least one second semiconductor element and a second electrode which is connected to the second semiconductor element are arranged on a main surface of the second substrate, which faces the main surface of the first substrate where the first semiconductor element and the first electrode are arranged. The conductive plate supports between the first substrate and the second substrate, and also electrically connects between the first electrode and the second electrode.
H01L 21/60 - Attaching leads or other conductive members, to be used for carrying current to or from the device in operation
H01L 25/07 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices all the devices being of a type provided for in the same subgroup of groups , or in a single subclass of , , e.g. assemblies of rectifier diodes the devices not having separate containers the devices being of a type provided for in group
H01L 25/18 - Assemblies consisting of a plurality of individual semiconductor or other solid state devices the devices being of types provided for in two or more different subgroups of the same main group of groups , or in a single subclass of ,
The rotor according to one embodiment of the present invention is provided in a rotating electrical machine, faces a stator, and rotates about the central axis. The rotor comprises: a plurality of magnetic pole portions that are arranged along the circumferential direction about the central axis; and a rotor core that supports the magnetic pole portions from one side in the radial direction. The magnetic pole portions each have: a main magnet in which the radial direction is set to a magnetization direction; and auxiliary magnets which are disposed symmetrically to each other on the outer sides of the main magnet in the circumferential direction and in which a direction tilted in the circumferential direction with respect to the radial direction is set as a magnetization direction. The rotor core has a recessed portion that faces the inside of the main magnet in the radial direction, houses a portion-to-be-supported of the main magnet, and is recessed inward in the radial direction.
In the present invention, a stator of a motor has a heat dissipation part. The heat dissipation part contacts a coil head of the stator and a housing that houses a rotor and the stator. The heat dissipation part has at least one heat dissipation member from among a first heat dissipation member and a second heat dissipation member. The first heat dissipation member axially contacts the coil head and the housing. The second heat dissipation member radially contacts the coil head and the housing. The radially inside surface of the coil head is exposed inside of the housing.
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
76.
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
The signal generation device according to one embodiment of the present invention comprises: N sensors that output N-phase signals (N is a multiple of 3) in accordance with the rotational angles of a rotating body; and a signal processing unit that processes the N-phase signals. The signal processing unit performs: a first process for calculating first N-phase complex vectors on the basis of the N-phase signals; a second process for converting the first N-phase complex vectors to first positive phase vectors; a third process for calculating, as norm ratios, the ratios between the norms of the first positive phase vectors prestored in a memory and the norms of the first positive phase vectors obtained in the second process; a fourth process for calculating second positive phase vectors by multiplying the real and imaginary axis components of the first positive phase vectors obtained in the second process by the norm ratios; and a fifth process for reversely converting the second positive phase vectors obtained in the fourth process to second N-phase complex vectors.
H02P 6/16 - Circuit arrangements for detecting position
G01D 5/249 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using pulse code
77.
SIGNAL GENERATION DEVICE AND SIGNAL GENERATION METHOD
A signal generation device according to an aspect of the present invention comprises: N-number of sensors (N represents a multiple of 3) that output N-phase signals in accordance with the rotational angle of a rotor; and a signal processing unit that processes the N-phase signals. The signal processing unit executes a first process for calculating first N-phase complex number vectors on the basis of the N-phase signals, a second process for converting the first N-phase complex number vectors into first positive phase vectors, a third process for calculating second positive phase vectors by normalizing a real axis component and an imaginary axis component of the first positive phase vectors acquired in the second process in accordance with a norm of the first positive phase vectors, and a fourth process for reverse-converting the second positive phase vectors acquired in the third process into second N-phase complex number vectors.
H02P 6/16 - Circuit arrangements for detecting position
G01D 5/249 - Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means generating pulses or pulse trains using pulse code
One embodiment of a stator according to the present invention comprises a stator core, a winding portion, bus bars, and a bus bar holder. The winding portion includes a plurality of conductor linking bodies. The conductor linking bodies include: a first winding portion wound toward one side in a circumferential direction from a first end portion to a second end portion, through a plurality of slots; a second winding portion wound toward the other side in the circumferential direction from a third end portion to a fourth end portion, through a plurality of slots; and a folded-back portion joining the second end portion and the third end portion. At least one folded-back portion is a folding-back conductor. The winding portion includes a plurality of connecting end portions. The plurality of connecting end portions include a first end portion and a fourth end portion connected to the bus bars, and a second end portion and a third end portion connected to the folding-back conductor. The bus bar holder, the folding-back conductor, and the plurality of bus bars constitute a bus bar unit. The bus bar unit is disposed between the plurality of connecting end portions in a radial direction, and is supported by means of the connections between the folding-back conductor and the plurality of bus bars, and the plurality of connecting end portions.
One aspect of a drive device according to the present invention comprises: a motor having a rotor that can rotate around a central axis, and a stator facing the rotor in the radial direction; an inverter that is electrically connected to the motor; and a housing that accommodates the motor and the inverter. The stator has a coil and a lead wire that extends from one side of the coil in the axial direction. The inverter has a lead wire connector that is connected to the lead wire. The housing has an opening that is open to the outside in the radial direction with respect to the center axis. Viewing the opening from the radial direction of the center axis, the lead wire connector is disposed in a region surrounded by the inner edge of the opening.
One embodiment of a drive device according to the present invention comprises a motor that is centered around a central axis, an inverter that is disposed on one side of the motor in the axial direction, and a housing that has a motor-accommodating part and an inverter-accommodating part. The housing has a flow path that includes a first flow path section, a second flow path section, and a third flow path section. The first flow path section is disposed in the inverter-accommodating part. The second flow path section is disposed in one of the inverter-accommodating part and the motor-accommodating part, and connects the first flow path section and the third flow path section. The third flow path section is disposed in the motor-accommodating part. The third flow path section has an outer peripheral flow path section that extends circumferentially along the outer peripheral surface of a stator. The second flow path section has a first path that extends from the first flow path section to the other side in the axial direction, and a second path that connects the first path and the outer peripheral flow path section. The second path and the outer peripheral flow path section form an obtuse angle in a connection part.
One embodiment of a drive device according to the present invention comprises: a motor having a rotor that rotates around a central axis, and a stator that faces the rotor in the radial direction and is provided with a stator core; a control unit that is positioned on one side of the motor in the axial direction and is electrically connected to the motor; a bearing holder that is positioned between the motor and the control unit, and holds a bearing that rotatably supports the rotor; and a housing that accommodates the motor, the control unit, and the bearing holder. The bearing holder is provided with a through-hole that penetrates the bearing holder in the axial direction. The housing is provided with a breather that is positioned nearer one side in the axial direction than the stator core, and allows the inside of the housing to communicate with the outside.
H02K 5/10 - Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. of water or fingers
B60K 1/00 - Arrangement or mounting of electrical propulsion units
F16H 57/027 - Gearboxes; Mounting gearing therein characterised by means for venting gearboxes, e.g. air breathers
H02K 7/116 - Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
Provided is a stator core manufacturing method with which a layered object including a plurality of annular core plates layered in the thickness direction is divided in the circumferential direction to form divided cores each including a plurality of planar divided core pieces layered in the thickness direction. The stator core manufacturing method comprises: a division line forming step for forming a plurality of division lines disposed in the circumferential direction on a steel sheet by pushing out a division line forming area, where a boundary part between the plurality of divided core pieces is formed on the steel sheet, in the thickness direction of the steel sheet; and a push-back step for pushing the division line forming area that has been pushed out in the thickness direction back to the original position. In the division line forming step, on a first division line that is at least one of the plurality of division lines, a cut-off part at which a portion of the first division line is cut off is formed.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 1/18 - Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
83.
ROTOR, ROTOR MANUFACTURING DEVICE, AND ROTOR MANUFACTURING METHOD
This rotor comprises: a columnar rotor core that extends in the axial direction; a rotor cover that covers the radial outer side of the rotor core; and a resin part that covers one side end surface of the rotor core in the axial direction. The rotor cover has a projecting part that projects in one axial direction with respect to the one side end surface of the rotor core in the axial direction. The resin part has a rim part on the radial outer side thereof, said rim part projecting in the one axial direction and in contact with the radial inner side of the projecting part.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
The present invention is a case in which a rib group is provided on the surface. The rib group has a plurality of unit ribs connected to each other, where each of the plurality of unit ribs has a first unit rib and a second unit rib. The first unit rib has a first rib, a second rib, and a third rib, and one end of the first rib, one end of the second rib, and one end of the third rib are connected to each other. The second unit rib has a fourth rib, a fifth rib, and a sixth rib, and one end of the fourth rib, one end of the fifth rib, and one end of the sixth rib are connected to each other. In the unit ribs, the angle formed by the ribs connected to each other is less than 180°, the other end of the first rib and the other end of the fifth rib are connected to each other, the other end of the second rib and the other end of the fourth rib are connected to each other, and the sixth rib is positioned on an extension line that is an extension of the third rib in the direction in which the third rib extends.
This rotor is rotatable about the central axis and comprises: a rotor core; and a plurality of flux barrier part groups provided in the rotor core and arranged so as to be spaced apart in the circumferential direction. Each among the plurality of flux barrier part groups includes a plurality of flux barrier parts arranged so as to be lined up and spaced apart in the radial direction. The rotor core has projecting sections protruding from the edges of the flux barrier parts toward the inner sides of the flux barrier parts, and the edge of at least one flux barrier part from among the plurality of flux barrier part groups is provided with two or more projecting sections.
This rotor comprises: a cylindrical rotor core that extends in the axial direction; and a rotor cover that covers the radial outer side of the rotor core. The rotor cover has: a projecting part that projects in one axial direction with respect to one side end surface of the rotor core in the axial direction; and a flange part that extends radially outward from one side end portion of the projecting part in the axial direction.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
NIDEC TAIWAN CORPORATION (Taiwan, Province of China)
Inventor
Ngo Huu-Tich
Yan Guo-Jhih
Wu Keng-Chang
Abstract
One embodiment of this electric actuator comprises: a motor unit including a rotor able to rotate about a motor shaft and a stator facing opposite across a gap from the rotor; a reduction drive for decelerating rotation of the rotor and outputting; a brake device for braking rotation of the rotor; a location detector for detecting changes in location of the rotor; and a cover member in the interior of which the motor unit is accommodated. The reduction drive, the brake device, the motor unit, and the location detector are arranged sequentially in the axial direction from one side of the axial direction. The brake device comprises: a first braking unit that is a magnetic material able to move in the axial direction between a braking position for braking rotation of the rotor and a non-braking position separated away to the one side of the axial direction from the braking position; a second braking unit that rotates synchronously with the rotor, makes contact with the first braking unit at the braking position, and loses contact with the first braking unit at the non-braking position; and a solenoid for switching the position of the first braking unit between the braking position and the non-braking position in accordance with an energization state. The brake device is accommodated in the interior of the cover member.
NIDEC TAIWAN CORPORATION (Taiwan, Province of China)
Inventor
Ngo Huu-Tich
Yan Guo-Jhih
Abstract
One embodiment of the electric actuator according to the present invention has: a motor portion having a rotor rotatable about a motor shaft extending in the axial direction and a stator facing the rotor with a gap interposed therebetween; a decelerator that decelerates and outputs the rotation of the rotor; a braking device that brakes the rotation of the rotor; and a position detector that detects the position change of the rotor. The braking device has: a first braking portion that is disposed on one side of the rotor in the axial direction and is a magnetic material movable in the axial direction between a brake position braking the rotation of the rotor and a non-brake position away from the brake position to the one side in the axial direction; a second braking portion that rotates in synchronization with the rotor, is in contact with the first braking portion of the brake position, and is in non-contact with the first braking portion of the non-brake position; and a solenoid that switches the position of the first braking portion to the brake position and the non-brake position in accordance with an energization state. The decelerator, the braking device, the motor portion, and the position detector are sequentially disposed from the one side in the axial direction to the axial direction.
One form of this power conversion device comprises: a power conversion circuit which carries out interconversion between DC power and N-phase AC power (N is an integer of at least 3); and a control unit which has a first deformation mode for controlling the power conversion circuit by means of pulse width modulation on the basis of a N-phase modulation waveform and a carrier waveform. In the first deformation mode, the control unit outputs a N-phase modulation waveform in which a first offset waveform W1 (θ) and a N-phase AC waveform are added, said first offset waveform W1 (θ) being represented by a formula (1) in which the maximum value fmax (θ) and the minimum value fmin (θ) of the N-phase AC waveform at an electrical angle θ, a first rate of change K1, and a symbol Sgn (Sgn is 1 or -1) are used as variables. The first rate of change K1 in the first deformation mode is greater than 0 and smaller than 1.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
A drive device according to one aspect of the present invention comprises a motor having a rotor that rotates about a central axis and a stator located on the radially outer side of the rotor, a housing having an accommodation space for accommodating the motor, and a flow path through which fluid passes. The housing has a tubular portion surrounding the radially outer side of the stator, and the flow path has an axial flow path portion extending through the inside of the wall of the tubular portion in the axial direction and a radial flow path portion extending from the axial flow path portion toward the radially inner side and opening toward the stator.
This control device controls an N-phase inverter when N is an integer of 3 or more. The control device comprises: a lowpass filter; a current detection unit; and an average processing unit. The lowpass filter has a frequency characteristic according to a time constant. The current detection unit detects, via the lowpass filter, a current flowing in an electrical resistor connected between a DC power source unit and the N-phase inverter. The average processing unit performs average processing on the current values of the currents detected by the current detection unit at a plurality of current detection times.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
H02P 23/14 - Estimation or adaptation of motor parameters, e.g. rotor time constant, flux, speed, current or voltage
H02P 27/06 - Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
92.
OPTICAL UNIT, SHAKE CORRECTION UNIT, AND SMARTPHONE
This optical unit comprises an imaging element and a circuit board electrically connected to the imaging element. The circuit board (100) has a first linear portion (122) that linearly extends in a first direction, a second linear portion (124) that linearly extends in a second direction different from the first direction, a first bend portion (123) that connects the first linear portion and the second linear portion, a first expanded portion (151) that is bent with respect to the first linear portion and extends from an end on one side in the width direction of the first linear portion, and a second expanded portion (152) that is bent with respect to the second linear portion and extends from an end on one side in the width direction of the second linear portion connected to the end on the one side in the width direction of the first linear portion via the first bend portion. The second expanded portion (152) is coupled to the first expanded portion (151). The circuit board (100) can maintain the shape thereof more firmly.
G03B 5/00 - Adjustment of optical system relative to image or object surface other than for focusing of general interest for cameras, projectors or printers
G03B 30/00 - Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
H04N 23/68 - Control of cameras or camera modules for stable pick-up of the scene, e.g. compensating for camera body vibrations
An inverter housing of this drive device is mounted in one axial end portion of a motor housing and surrounds an inverter unit. The inside of the inverter housing is connected to the inside of the motor housing. In addition, an inner jacket forms a fluid passage together with a motor cylindrical portion of the motor housing. A first bearing holder is mounted in one axial end portion of the inner jacket and holds a first bearing that rotatably supports a portion of a shaft on one side in the axial direction. A stator is held on the radially inner side surface of the inner jacket.
H02K 11/33 - Drive circuits, e.g. power electronics
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/02 - Arrangements for cooling or ventilating by ambient air flowing through the machine
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Provided is a drive device in which a fan is fixed to an axial end of a rotor. A housing that accommodates a shaft, the rotor, a stator, and the fan has a motor housing, an inner jacket, and a fluid passage. The motor housing has a motor cylinder part that is a cylindrical shape extending in the axial direction and that surrounds the rotor and the stator. The inner jacket extends in the axial direction and is positioned on the radially inner surface of the motor cylinder part. The fluid passage is surrounded by the motor cylinder part and the inner jacket. A fluid can flow through the fluid passage.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
H02K 5/173 - Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields using bearings with rolling contact, e.g. ball bearings
H02K 5/18 - Casings or enclosures characterised by the shape, form or construction thereof with ribs or fins for improving heat transfer
H02K 5/20 - Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
H02K 9/22 - Arrangements for cooling or ventilating by solid heat conducting material embedded in, or arranged in contact with, the stator or rotor, e.g. heat bridges
95.
ROTOR, DYNAMO-ELECTRIC MACHINE, AND METHOD FOR MANUFACTURING ROTOR
One embodiment of a rotor according to the present invention comprises an annular rotor core that is centered about a center axis line, a plurality of magnets that are inserted in magnet holes provided in the rotor core, a cap part that is disposed on one side in the axial direction of the rotor core and covers the magnet holes, and a resin part that fixes the magnets to the rotor core. The cap part has an opposing surface that faces end surfaces of the magnets that are oriented toward one side in the axial direction. Each magnet hole has a first flux barrier that is disposed at a side portion on one side of the magnet as seen in the axial direction, and a second flux barrier that is disposed at a side portion on the other side. The resin part has a first filler portion that is filled into the first flux barrier, and a second filler portion that is filled between the end surface of the magnet and the opposing surface.
H02K 1/276 - Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
H02K 15/03 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
A power conversion device according to one aspect of the present invention comprises a power conversion circuit that converts DC power and N-phase AC power (N represents an integer greater than or equal to 3) to each other, and a control unit that controls 2N switches included in the power conversion circuit in a first modulation mode. The control unit in the first modulation mode periodically switches between a first PWM mode in which, among the 2N switches, a high-side switch or low-side switch corresponding to one phase is fixed in an ON position and the switches corresponding to the other phases are controlled by pulse width modulation, and a second PWM mode in which, among the 2N switches, the switches corresponding to all the phases are controlled by pulse width modulation. The sum of a first period in which the control unit operates in the first PWM mode and a second period in which the control unit operates in the second PWM mode is shorter than one-2Nth of one cycle of the electrical angle of an AC waveform occurring at a connection terminal of the power conversion circuit. The first period is longer than or equal to one cycle of pulse width modulation. The proportion of the first period in the sum of the first period and the second period is variable.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
97.
STATOR CORE, STATOR, METHOD FOR MANUFACTURING STATOR CORE, AND METHOD FOR MANUFACTURING STATOR
This stator core comprises tooth parts that have first cores and second cores. The second cores are connected to the radially inner sides of the first cores. At at least one slot between the tooth parts adjacent in the circumferential direction, the first cores have, at the radially inner ends thereof, first umbrella parts that are located on both sides, of the slot, in the circumferential direction and that are protruded in the circumferential direction, and the second cores have, at the radially inner ends thereof, second umbrella parts that are located on both sides, of the slot, in the circumferential direction and that are protruded in the circumferential direction.
H02K 15/02 - Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
H02K 15/06 - Embedding prefabricated windings in machines
This motor has a rotor and a stator. The motor has a first motor fan positioned on one side of the rotor core of the rotor in the axial direction and a second motor fan positioned on the other side of the rotor core in the axial direction. The rotor core includes a first axial direction air passage and a second axial direction air passage which penetrate in the axial direction. The first fan body portion of the first motor fan has: a first air-sending portion positioned on one side of the first axial direction air passage in the axial direction and allowing air to flow in the axial direction within the first axial direction air passage; and a first ventilation hole passing through the first motor fan in the axial direction and connecting to one side of the second axial direction air passage in the axial direction. The second fan body portion of the second motor fan has: a second air-sending portion positioned on the other side of the second axial direction air passage in the axial direction and allowing air to flow in the axial direction within the second axial direction air passage; and a second ventilation hole passing through the second motor fan in the axial direction and connecting to the other side of the first axial direction air passage in the axial direction.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
This motor fan has a plurality of axial air passages penetrating in the axial direction of a central axis, and is fixed to the axial outer side of a rotor core which rotates about the central axis, the motor fan rotating together with the rotor core. The motor fan has a plate-shaped fan main body part. The fan main body part has a vent hole that penetrates the fan main body part in the axial direction and connects to a portion of the axial air passages among the plurality of axial air passages of the rotor core, and an air blower having a radial air passage that connects to the axial air passage other than the portion of the axial air passages among the plurality of axial air passages, and opens on the outer circumferential side of the fan main body.
H02K 9/06 - Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
This control device controls an N-phase inverter that applies a voltage to each of N-phases, where N represents an odd number greater than or equal to 3. The control device comprises a current detection unit and a calculation unit. Assuming that from among the voltages applied to the N-phases, a phase to which the ((N+1)/2)th highest voltage at the time of current detection is applied is set as an intermediate phase, the current detection unit detects currents of (N-1) phases other than the intermediate phase from among currents of the N-phases. The calculation unit calculates the current value of the current of the intermediate phase on the basis of detection results from the current detection unit.
H02M 7/48 - Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
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