Abstract: The device has motor housing side annular engagement portion 40 formed at outer circumferential surface of end surface portion of motor housing 11 which is opposite side to output shaft portion of rotation shaft of electric motor; and metal cover side annular engagement portion 38 formed at opening end 37 of metal cover 12 that covers electronic control unit and engaged with motor housing side annular engagement portion 40. Fixing region is formed by fixing metal cover side annular engagement portion 38 to motor housing side annular engagement portion 40 in a fixing manner without using any fixing screw in a state in which metal cover side annular engagement portion 38 is engaged with motor housing side annular engagement portion 40. Sealing region is formed between fixing region and opening end 37 of the metal cover 12 with liquid sealant 41 applied between fixing region and opening end 37.

Abstract: An electric motor includes: a housing having a first rotor bearing and a stator support surface; a cantilever stator that includes a lamination stack, a first side of the lamination stack abutting the stator support surface and a second side of the lamination stack abutting a stator endbell that has a second rotor bearing, wherein the cantilever stator is held by way of tie rods attaching the stator endbell to the housing; and a rotor in the cantilever stator, the rotor held by the first and second rotor bearings.

Abstract: A drive device includes a motor, a control board, a connector located between the motor and the control board in a predetermined direction, and a solder connecting a motor wire and the control board. The control board has a through-hole opening on an upper side and on a lower side. The connector includes a support portion that protrudes toward the control board such that a tip surface of the support portion is in contact with the lower side of the control board, a guide portion that has a guide hole through which the motor wire passes, the guide hole opening on a lower side and on an upper side. The upper side of the connector is spaced from the lower side of the control board in the predetermined direction. A fillet of the solder is formed on both the upper side and the lower side of the control board.

Abstract: A rotor of an electrical rotating machine having poles formed from stacks of magnetic plates and electrical conductors wound around each pole. The rotor includes cooling fins extending in prolongation of the poles along the axis of rotation of the rotor.

Abstract: A cryogen-free partially-superconducting electric machine of the wound field synchronous type includes a room temperature semi-slotless stator, a superconducting motor rotor, a gap between the rotor and stator, a torque tube which isolates the cryogenic superconducting motor rotor from a central shaft, bearings, an acoustic cryocooler integrated within the motor rotor and torque tube, a heat exchange, a rotary transformer, a vacuum pump, a vacuum enclosure integrated with the stator, and an eddy current/thermal shield. The electric machine can act as a motor or a generator and produces a high specific power and efficiency.

Abstract: An air-conditioning system comprises a channel system, a system conveying device positioned in the channel system and configured to convey air in the channel system, a sensor device comprising at least one analysis channel and configured to measure a characteristic of air flowing through the at least one analysis channel, and a suction jet pump comprising a motive-fluid inlet, a suction inlet, and a pump outlet. The system conveying device separates a suction area of the channel system arranged upstream of the system conveying device from a pressure area of the channel system arranged downstream from the system conveying device, and the sensor device further comprises a sensor outlet configured to release air from the sensor device. The motive-fluid inlet is fluidically connected to the pressure area via a suction jet branch-off point within the channel system, and the suction inlet is fluidically connected to the sensor outlet.

Abstract: A stator for an electrical machine, in particular for an electromotive drive machine for an electric or hybrid vehicle, includes a stator core stack with a stator yoke and a number of radial stator teeth, as well as a corresponding number of stator slots, arranged between the stator teeth, for receiving a stator winding. A cooling apparatus has a number of cooling channels, each of which runs axially in one of the stator slots.

Abstract: A motor according to the present invention includes: a stator having a stator core and a coil; a rotor having a rotary shaft and a rotation body; a shaft bearing rotatably supporting the rotor; and a molding resin covering the stator. The motor has a coil end that is the coil protruding from the stator core in a shaft center X direction, and has a non-combustible layer provided to cover the coil end. The non-combustible layer is a metallic cover made of, for example, metal. The metallic cover is disposed to cover a periphery of a coil assembly in which the coil is formed on the stator core through an insulator. The metallic cover is integrated with the coil assembly by a molding resin.

Abstract: A cooling system simultaneously cools both a power module and a vehicle motor. A vehicle motor housing is provided in thermal communication with a plurality of manifolds. Each manifold defines a cooling fluid inlet, a cooling fluid outlet, and a distribution recess providing fluid communication. The distribution recess may be defined by a wall having an exterior major surface in thermal communication with the vehicle motor. A manifold fluid insert may be disposed within the distribution recess, defining a plurality of inlet branch channels and outlet branch channels. A power module may be coupled to the manifold and a heat sink feature. A flow of coolant fluid is provided from each cooling fluid inlet, through the inlet branch channels of the manifold fluid insert for impingement with the heat sink feature, returning through the outlet branch channels and to the cooling fluid outlet of the respective manifold.

Abstract: An electric machine may include a rotor shaft that has a hollow region configured to receive a coolant. The hollow region is defined by an inner surface which has a slope that increases from a first inner diameter at a first end to a second inner diameter at a second end. Centrifugal force generated when rotating the rotor shaft causes the coolant to flow across the inner surface of the rotor shaft from the first end to the second end at a velocity depending at least in part on the slope of the inner surface of the rotor shaft. A method of cooling an electric machine includes injecting a coolant into a first end of the hollow region of the rotor shaft, rotating the rotor shaft at an operational rate of rotation, with the rotation generating centrifugal force that causes the coolant to flow from the first end to the second end, transferring heat from the rotor shaft to the coolant.

Abstract: An electric motor assembly includes a stator, a rotor, a motor housing, a rotatable shaft, a radial fan, and an air scoop. The motor housing at least partly houses the stator and rotor and presents an exterior motor surface. The rotatable shaft is associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis. The radial fan is mounted on the rotatable shaft exteriorly of the motor housing and is rotatable with the shaft to direct airflow in a radially outward direction. The air scoop extends radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface. The air scoop includes spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially.

Abstract: A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.

Abstract: A motor includes a rotor rotatable about an axis, a housing defining a motor chamber receiving at least a portion of the rotor, and a bearing assembly rotatably supporting the rotor on the housing. The housing includes a pair of axially spaced apart endshields. The bearing assembly includes a bearing and lubricant collection structure associated with the bearing. The lubricant collection structure defines a collection chamber configured to collect lubricant from the motor chamber and direct the lubricant to the bearing.

Abstract: In one or more embodiments, a system for operation in a generator mode comprises a cryocooler to cool a superconducting coil. The system further comprises a flux pump to provide flux to the superconducting coil. Also, the system comprises a shaft of a prime mover to receive torque to rotate a rotor. In addition, the system comprises the superconducting coil to electrically interact with a main stator coil through a rotating magnetic field. Further, the system comprises a control stator coil to receive a current from a controller and to electrically interact with a non-superconducting coil. In one or more embodiments, a magnitude, phase, and/or frequency of rotating magnetic fields of the superconducting coil and the non-superconducting coil is varied in comparison to a magnitude, phase, and/or frequency of the magnetic field produced by the superconducting coil alone to control a magnitude, phase, and/or frequency of an output voltage.

Abstract: A rotor of the rotary electric machine includes a rotor core, and a plurality of permanent magnets disposed in an inner part or an outer circumferential surface of the rotor core in a circumferential direction. In the rotor core, one or more first flow passages through which a cooling liquid flows, the one or more first flow passages extending in an axial direction and communicating with the outside of the rotor, and one or more second flow passages extending radially outward from the first flow passage and having closed distal ends, are formed.

Abstract: Provided is a motor apparatus in which an increase in its size in a radial direction of a rotation shaft of a motor can be suppressed while securing redundancy of control of driving of the motor. A motor apparatus includes a motor having a rotation shaft, a first control circuit board where a first power circuit and a first control circuit are mounted, and a second control circuit board where a second power circuit and a second control circuit are mounted. The control circuit boards are arranged with an overlapping portion when viewed along an axial direction on an extension line of an axis of the rotation shaft. The overlapping portion intersects the extension line of the rotation shaft of the motor.

Abstract: The disclosure relates to a system having an electric machine with a superconductive component cooled using a cryogenic liquid, and in particular to the full utilization of the refrigeration power available from vaporization of the cryogenic coolant. The system also has a fuel cell, in which an operating medium may be reacted to provide electrical energy. The coolant is fed in liquid form to the superconductive component to cool the component, utilizing the vaporization enthalpy of the coolant. The coolant is then fed in gaseous form to a further component of the machine to cool the component, utilizing the heating enthalpy of the coolant. The now heated coolant is fed to the fuel cell, which uses the coolant supplied to the fuel cell as an operating medium and reacts it.

Abstract: A water-replenishing and gas-removing structure for water cooling device includes a flow-guiding main body having a water-receiving space as well as an inlet, an outlet, a first opening and a second opening, which are communicable with the water-receiving space. The first and the second valve member are located in the water-receiving space corresponding to the first and the second opening, respectively, for opening or closing them. The first and the second connecting member are connected at an end to the first and the second opening, respectively, and at another end to an external water-replenishing and an external gas-removing apparatus, respectively, via a pipe each. With these arrangements, cooling fluid can be replenished into and surplus gas can be removed from a water cooling device without the need of disassembling or reworking the water cooling device.

Abstract: An electric machine has a housing and has a stator inside the housing, surrounding a rotor arranged on a motor shaft so as to be fixed to the shaft. A rotary field winding, at the ends of the stator, forms a winding head. The winding heads are embedded in a thermally conductive encapsulation material, wherein the encapsulation material is in thermal contact with the housing along the outer circumference of the winding head. A segmented cooling plate is arranged on the inner circumference of the encapsulation winding head.

Abstract: An electric machine for a drivetrain of a motor vehicle may comprise: a rotor with a rotor laminated core; a stator with winding heads on opposite end faces; and a housing with a a cooling liquid reservoir. The rotor core comprises multiple stacked laminations each with an aperture connecting the end faces to one another. The apertures of adjacent laminations are offset in a circumferential direction so: a first helical cooling channel connects an inner region of the core to a first end face; a second helical cooling channel connects the inner region of the core to a second end face; and the first cooling channel and the second cooling channel are oriented oppositely with respect to one another and are connected via a passage within the rotor laminated core to a feed line conducting the cooling liquid within the rotor shaft.

Abstract: A generator includes a stator with a stator winding, a rotor with a field winding supported for rotation relative to the stator, and a housing enclosing the stator and the rotor. The housing has an independent system port that is connected to a shared system port by a selector. The selector fluidly couples the stator and one of the independent system port and the shared system port. The selector also fluidly separates the stator from the other of the independent system port and the shared system port. Generator arrangements and methods of making generators are also described.

Abstract: An electric drive unit for powering a load, e.g., road wheels of a motor vehicle, includes a housing having a floor section separating the housing into upper and lower chambers. The floor section defines an elongated drain opening, drain holes, and an oil supply port in fluid communication with an oil pump. A rotary electric machine is enclosed within the lower chamber, and has electrical leads positioned directly below the drain opening. A cover assembly is fastened to the housing within the upper chamber, and has a coolant channel assembly integrally connected to a cover plate. The coolant channel assembly includes electrical terminals that project through the drain opening and are fastened at a first distal end of the electrical terminals to the electrical leads. The cover assembly defines a primary coolant channel in fluid communication with the oil supply port, and directs oil to the electrical terminals.

Abstract: A vehicle main electric motor includes: a ring-shaped filling chamber, which is formed in contact with a ball bearing and a roller bearing in a direction of a rotation shaft, for filling with a semi-solid lubricant, and which has a central axis concentric with the rotation shaft; and a discharge section connected to the filling chamber, for inflow of the semi-solid lubricant from the filling chamber. A display member, which has a specific gravity lower than a specific gravity of the semi-solid lubricant, is arranged, in an interior of the discharge section, at an initial position that is a position not reached by the semi-solid lubricant during an initial greasing. The discharge section has a retaining part for retaining, at a movement position that is a determined position within the discharge section, the display member moving in a greasing direction due to pressure of the semi-solid lubricant during a supplemental greasing.

Abstract: An electric drive device includes a housing with a motor-housing-side annular groove portion formed on an outer peripheral surface of an end surface portion of the housing, on an opposite side to an output portion of a rotation shaft of an electric motor section. The groove portion is formed by an annular groove retreating inward in the radial direction orthogonal to the axial line of the housing. A metal-cover-side distal end portion is formed at the opening end of a metal cover covering an electronic control unit that controls the electric motor section, and faces the groove from the outer side. A space between the groove portion and the distal end portion is filled with a liquid sealant, and an annular inclined surface is inclined so it is widened outward in the radial direction of the metal cover is formed on the inner peripheral surface of the groove portion.

Abstract: Provided is a rotating electric machine that allows a stator cooling passage to be formed compactly. A passage of a stator cooling refrigerant is formed by a water jacket fitted and fixed to both ends on a base side which is the flange side and a distal end side of a cylindrical portion of a stator frame on an outer circumference of the cylindrical portion, the stator frame has a difference between a diameter on the base side and a diameter on the distal end side, the diameter on the base side being formed to be larger, and the stator frame and the water jacket are sealed by press fitting and welding on the base side and the distal end side.

Abstract: Particular embodiments described herein provide for an electronic device that can be configured to include a torsional heat pipe. The torsional heat pipe can include a first housing static portion located in a first housing of an electronic device, where the first housing static portion is coupled to a heat source, a second housing static portion located in a second housing of the electronic device, where the second housing static portion is coupled to a heat spreader, and a torsion portion located in a hinge of the electronic device, where the hinge rotatably couples the first housing to the second housing and the torsion portion rotates as the second housing rotates relative to the first housing and the torsion portion couples the first housing static portion to the second housing static portion.

Abstract: A rear frame has a plurality of engaging portions engaged with connection members. An engagement surface of the specific engaging portion which is a part of the plurality of engaging portions is in a state in which the connection member is in contact with the connection member, and the material of the rear frame is exposed. Among the plurality of engaging portions, the other engaging portion other than the specific engaging portion and the outer wall portion of the rear frame exposed to the outside space have a coating.

Abstract: A magnetic anti-lock device for a rotating shaft is described. The magnetic anti-lock device utilizes opposing magnets to reduce the varying force required to rotate the shaft and increases efficiency of the rotating shaft. The magnetic anti-lock device includes at least one inner magnet attached to the rotating shaft, and at least one outer magnet fixed in position relative to the rotating shaft. The inner magnet passes the outer magnet each time the shaft rotates creating a repulsive force to reduce the force necessary to rotate the shaft.

Abstract: An annular rotating armature is presented. The annular rotating armature includes an armature winding having a plurality of coils, an armature support structure and a magnetic shield disposed between the armature winding and the armature support structure. The magnetic shield having a first magnetic shield ring, a second magnetic shield ring disposed concentric to the first magnetic shield ring and coupled to the first magnetic shield ring via a magnetic shield bridge link. An air gap is formed between the first magnetic shield ring and the second magnetic shield ring. The magnetic shield bridge link is disposed within the air gap. A superconducting generator including the annular rotating armature and a wind turbine having such superconducting generator are also presented.

Abstract: An electrical machine includes a casing including a base wall provided with a projection projecting from the base wall towards the inside of the casing. A stator includes a core having a plurality of pole shoes, a plurality of conductors wound on the pole shoes to form a plurality of coils constituting a stator winding. Insulators are interposed between the core and the stator winding. A coil of the winding has an end portion engaged with the projection for heat exchange. The insulators include a housing for a first number of turns of the coil and a second housing for a second number of turns of the coil. The first and second housings are shaped such that a layer of the turns of the end portion abutted against the projection is defined by stretches of the conductors all substantially coplanar with each other.

Abstract: Provided is an electric linear actuator that enables reduction of the mounting space and reduction of costs. An electric motor of this electric linear actuator is an axial gap motor including a stator and a rotor which are disposed such that orientations of magnetic poles which generate interlinkage flux which contributes to torque generation are parallel to the rotation axis of the electric motor. Further, a linear motion mechanism and the electric motor are disposed in line along the same axis which serves as the axis of a rotation input and output shaft of the linear motion mechanism. First and second coil terminals have extended portions extended in the outer-diameter side in the radial direction with respect to the rotation axis, and the extended portions are electrically connected to a control device through a wiring mechanism.

Abstract: A gas ejection apparatus includes: a cylinder having a rotating member that rotates within the cylinder; a motor coupled to the rotating member of the cylinder and that causes gas to be compressed inside the cylinder and to be ejected from the cylinder by causing rotation of the rotating member; a control circuit board that controls the motor; and a case in which the cylinder, the motor and the control circuit board are disposed. The case extends in a planar direction and has side surfaces that are orthogonal to the planar direction. The motor and the cylinder are arranged adjacent to each other in the planar direction of the case. The control circuit board is disposed adjacent to and substantially parallel to one of the side surfaces of the case.

Abstract: A driving unit includes a motor, a control unit and a partition member. The control unit includes an inverter configured to transfer electric power to and/or from the motor, and a casing configured to accommodate the inverter. The partition member is disposed between the motor and the inverter. The partition member includes a first heat conductive member, and a second heat conductive member disposed at a first side of the first heat conductive member in a thickness direction and having a thermal conductivity lower than that of the first heat conductive member and a third heat conductive member disposed at a second side of the first heat conductive member in the thickness direction of the first heat conductive member and having a thermal conductivity lower than that of the first heat conductive member. The heat conductive member is coupled to the casing.

Abstract: A motor includes a rotor to rotate about a motor axis, and a stator radially outside of the rotor. The rotor includes a shaft extending along the motor axis, and including a collar portion and a screw portion located along an axial direction on an outer circumferential surface thereof, a rotor core surrounding the shaft from radially outside, a rotor magnet fixed to the rotor core, a pair of plate-shaped end plates on both axial sides of the rotor core, and a nut screwed onto the screw portion. The rotor core and the pair of end plates are held between the collar portion and the nut. Each end plate includes a first surface opposite to an axial end surface of the rotor core, and a second surface facing away from the first surface. The first surface includes a slanting surface that slants toward the rotor core and extends radially outward, and is in contact with the axial end surface of the rotor core.

Abstract: A rotor for a synchronous machine of a motor vehicle includes an excitation coil configured to generate a magnetic field necessary for rotation of the rotor in a stator of the synchronous machine. The rotor also includes a supply circuit, to which energy is fed contactlessly such that the supply circuit supplies the excitation coil with the energy. The rotor also includes a demagnetization circuit configured to demagnetize the excitation coil, which, upon collapse of the energy supply of the excitation coil, diverts a current flowing through the excitation coil into a circuit branch in which at least one component for demagnetization is arranged, wherein the at least one component is also configured to perform a protection function to protect the supply circuit against an induced voltage generated at the excitation coil.

Abstract: A perimeter electric machine cooling arrangement includes a cooling conduit arranged to remove heat from an integrated housing containing an electric motor and a power inverter. The electrical connections between the electric motor and the power inverter are provided by flexible, pre-formed busbars that are arranged in pass over liquid cooling connections in the region between the electric motor and the power inverter. The integrated housing includes an intermediate cover over the electric motor and the power inverter portions of the housing, with a window through which the busbars can pass to reach the electric motor. The housing is further provided with an outer housing cover and seals that isolate the electric motor and the power inverter from the exterior environment and one another.

Abstract: The electric motor includes a frame defining an inner volume (VI) wherein is accommodated a rotor, a stator and a fan, the frame comprising a first aperture placing the inner volume (VI) of the frame in fluidic communication with the outside of the frame, a second aperture placing the internal volume (VI) of the frame in fluidic communication with the outside of the frame along a radial axis (R) substantially perpendicular to an axis of rotation (X) of the rotor. The fan being positioned in proximity to the second aperture and being configured for generating a gas fluid flow (F), at least one acoustic attenuation device is accommodated in the second aperture so as to partly close the second aperture.

Abstract: Provided is an electric linear actuator that enables reduction of the mounting space and reduction of costs. An electric motor of this electric linear actuator is an axial gap motor including a stator and a rotor which are disposed such that orientations of magnetic poles which generate interlinkage flux which contributes to torque generation are parallel to the rotation axis of the electric motor. Further, a linear motion mechanism and the electric motor are disposed in line along the same axis which serves as the axis of a rotation input and output shaft of the linear motion mechanism. First and second coil terminals have extended portions extended in the outer-diameter side in the radial direction with respect to the rotation axis, and the extended portions are electrically connected to a control device through a wiring mechanism.

Abstract: A hand held machine tool for machining workpieces, comprising a housing in which a motor driving a rotor shaft is accommodated, and having an air guide region formed in the housing for supplying cooling air to the motor along a main flow direction oriented substantially parallel to the motor longitudinal axis. The air guidance region is limited at one end by at least one air inlet and at the other end by at least one air outlet for discharging the cooling air from the housing. A separator is arranged in the air guide region for dividing the cooling air into an outer partial air flow flowing around the outer circumference of the motor and into an inner partial air flow flowing through the motor. The separator is formed such that a degree of contamination of the outer partial air flow is greater than a degree of contamination of the inner partial air flow.

Abstract: A cooling apparatus includes: an annular internal liquid coolant flow channel that is mounted to a rotary electric machine main body, and in which an internal liquid coolant circulates around an outer circumference of the rotary electric machine main body, and an external liquid coolant passage portion through which an external liquid coolant passes, the external liquid coolant passage portion is connected to the internal liquid coolant flow channel by a connecting portion that is positioned vertically higher than the rotary electric machine main body, and the electric power converting apparatus includes a heat radiating surface that releases heat that is generated in the electric power converting apparatus, the electric power converting apparatus being mounted to the cooling apparatus such that the heat radiating surface and the internal liquid coolant can exchange heat at a position that is vertically lower than the connecting portion.

Abstract: This motor includes a frame defining an inner space (VI) in which a rotor, a stator and a fan are housed, the frame comprising an a first opening placing the inner space (VI) of the frame in fluid communication with the outside of the frame, a second opening placing the inner space (VI) of the frame in fluid communication with the outside of the frame along a radial axis (R) substantially perpendicular to a rotation axis (X) of the rotor. The fan being arranged near the second opening and being configured to create a flow (F) of a gaseous fluid, a first acoustic attenuation device is housed in the second opening so as to partially close the second opening.

Abstract: Radial direction outer side sizes of a first rectifying unit, a circuit board, and a second rectifying unit configuring a rectifying device are disposed so as to be sequentially smaller in a direction away from a frame of a rotating electrical machine main body, and at predetermined intervals, a cover covering the rectifying device has a cover end wall portion, a cover outer wall portion, and a cover intermediate portion, an inner peripheral side inlet portion is formed in the cover end wall portion, an outer peripheral side inlet portion is formed in the cover intermediate portion, and the outer peripheral side inlet portion is formed of an axial direction covering portion, and a radial direction covering portion that connects the axial direction covering portion and an outer peripheral portion of the cover end wall portion.

Abstract: Provided is a power generating device which, while having a basic structure of using a rack and a pinion, increases power generating efficiency and has fewer components, has improved durability due to a simplified structure, and can easily be made in smaller sizes. Configuring a guide mechanism using outer walls of a case of a power generating unit as guides and combining the same with rails provided on inner walls of a case of the power generating device distributes unnecessary stress on the power generating unit over the inner walls of the case to obtain effects of achieving an overall small size, reduction in the number of components, and improved durability.

Abstract: An integrated electric power steering apparatus in which a control unit 1 or 101 for controlling a motor 2 is disposed inside a housing, the control unit 1 or 101 is disposed so as to be coaxial to an output shaft 21 of the motor 2, and in which the control unit 1 or 101 and the motor 2 are integrated, wherein: the control unit 1 or 101 includes a circuit board 4 and an intermediate member 36; main parts are mounted to the circuit board 4; wiring is disposed on the intermediate member 36; the circuit board 4 and the intermediate member 36 are stacked; the parts are mounted to first and second surfaces of the circuit board 4; and a portion of the housing and first surfaces of the parts are placed in direct contact or are placed in contact so as to have a heat-transferring member interposed.

Abstract: A cover for a torque converter and an electric motor, comprising a cover surface that includes a first cluster of perforations that are located adjacent to a first end of a rotor of the motor, wherein the perforations are arranged to transfer fluid from the torque converter to a rotor of the electric motor.

Abstract: A rotating electrical machine cooling structure such that a cooling medium is supplied by a pump to a stator and rotor of a rotating electrical machine, thereby cooling the stator and rotor, includes a first passage that supplies the cooling medium from the pump to the stator, a second passage that supplies the cooling medium from the pump to the rotor, and a valve that regulates a flow of the cooling medium of the first passage and a flow of the cooling medium of the second passage, wherein a cooling state of the stator and a cooling state of the rotor are controlled by the valve.

Abstract: The invention relates to an electric motor comprising an electronics housing having motor electronics accommodated therein and a stator housing arranged axially at a distance from the electronics housing, wherein, axially between the electronics housing and the stator housing there is arranged a twin-flow cooling wheel which, during operation, generates a first cooling air stream along the electronics housing and a second cooling air stream along the stator housing and/or at least one bearing shield adjoining the stator housing axially.

Abstract: A rotary union that includes a heated ferrofluid seal is disclosed. The rotary union includes an inner rotating shaft, an intermediate rotating shaft and an outer rotating shaft. The inner rotating shaft is hollow to allow the flow of cryogenic fluid in one direction. The inner rotating shaft and the intermediate shaft are spaced apart to create a channel for the return of the cryogenic fluid. The intermediate rotating shaft is separated from the outer rotating shaft by a gap so as to reduce thermal conductivity. In this way, the temperature of the outer rotating shaft is greater than the temperature of the cryogenic fluid. A heated ferrofluid seal is disposed between the outer rotating shaft and the housing.

Abstract: An electric vehicle includes an energy storage system, an integrated drive system assembly having a gearbox, a power inverter, and an electric motor, wherein the gearbox, the electric motor and the power inverter are assembled into a single unit with a multi-piece housing. The electric vehicle may also include two half shafts for respective wheels of the electric vehicle. The gearbox, the electric motor and the power inverter may be oriented such that the gearbox extends along a center line of the electric vehicle and the electric motor and the power inverter extend from the gearbox in opposite directions. The electric vehicle may also include a mutual thermal management system coupled to the integrated drive system assembly and having at least one liquid coolant loop that is thermally coupled to the electric motor, the power inverter, the gearbox, a cooling system, a refrigeration system, and an HVAC system.

Abstract: A motor device includes a motor, a motor driver housing, a motor control circuit board, a heat dissipation device, a heat isolation element and at least one fixing element. The motor includes fins arranged at a lateral portion of the motor. The motor driver housing includes a bottom surface. A gap is provided between the bottom surface and the lateral portion. The heat dissipation device is disposed at an end portion of the motor. The heat dissipation device includes a heat dissipation housing and a single fan. The heat dissipation housing includes an inlet and a first outlet. The first outlet faces the gap. The fan is disposed in the heat dissipation housing. The heat isolation element is connected to the motor and the heat dissipation housing. The fixing element passes through the heat isolation element and fixes the heat dissipation housing to the end portion of the motor.