Heat-exchange Structure Patents (Class 310/64)
  • Patent number: 11316409
    Abstract: A motor includes a holder having an annular plate shape with a plate thickness in an axial direction of a rotor housing, and including a flange section disposed so the rotor housing rotates at an inner side of the flange section, a center piece including a plate-shaped section opposing the flange section, and a heat sink including a heat dissipation section projecting from the plate-shaped section toward the flange section. The flange section integrates with a flow rectification section including a cooling air flow rectification face extending along a cooling air flow path between the flange section and the plate-shaped section. The heat dissipation section is disposed in the cooling air flow path. The cooling air flow rectification face closely opposes the top of the heat dissipation section. A bulk reduction section is between the cooling air flow rectification face and the flange section opposite of the plate-shaped section.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Ryosuke Goto, Hideaki Ishii
  • Patent number: 11309760
    Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 19, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masashi Matsumoto, Hazuki Kawamura, Kohei Watanabe, Yuki Tanaka, Haruki Kusamaki
  • Patent number: 11289957
    Abstract: A generator and a wind turbine are provided. The generator includes an active cooling circuit and a passive cooling circuit, the active cooling circuit is in communication with a closed space, and the passive cooling circuit is in communication with the external environment. The active cooling circuit includes mutually communicating chambers located at two axial ends of the generator, an air gap between a rotor and a stator of the generator, and radial channels distributed along an axial direction of the generator. The active cooling circuit is provided with a cooling device in communication with the closed space, and the stator is fixed on a fixed shaft through a stator bracket. The passive cooling circuit includes a first axial channel running through the stator, a second axial channel running through the stator bracket, and an outer surface of the generator. A heat exchanger is further arranged inside the generator.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: March 29, 2022
    Assignee: XINJIANG GOLDWING SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jinhui Li, Junwei Liu, Wenhua Xu
  • Patent number: 11277046
    Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 15, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masashi Matsumoto, Hazuki Kawamura, Kohei Watanabe, Yuki Tanaka, Haruki Kusamaki
  • Patent number: 11258338
    Abstract: An electric motor including a stator body with a stator laminated core and a stator slot, wherein the stator slot has a slot wall with a slot wall insulation for electrical insulation, as well as at least one electrical conductor which is received by the stator slot, the slot wall insulation having a tooth-shaped configuration.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: February 22, 2022
    Assignee: AUDI AG
    Inventor: Korbinian Weber
  • Patent number: 11228221
    Abstract: A motor includes a stator with a stator core, an insulator, coils, and a terminal pin. The stator core includes an annular core back and teeth. The teeth extend radially outward from the core back and are arranged in the circumferential direction. The coil is defined by a conductive wire wound around a tooth via the insulator. The conductor is connected to the conductive wire and is connected to the circuit board. The insulator includes a cylindrical terminal holder located between adjacent ones of the teeth, extends in the axial direction, and accommodates the conductor. The core back includes a stator recess located between adjacent ones of the teeth and is recessed radially inward from the radially outer surface. The stator recess accommodates at least a portion of the terminal holder.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: January 18, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Yuya Horii
  • Patent number: 11199192
    Abstract: Example implementations relate to a method and system for pumping fluid with a pump assembly to cool waste-heat producing system of an apparatus. The pump assembly includes a first housing, a rotor assembly, a stator assembly, a second housing, an outlet connection port coupled to the second housing, and a guide vane insert. The first housing includes a first bore and first inlet guide vanes (IGVs) coupled to inlet of the first bore. The rotor assembly including an impeller, is disposed in the first bore. The stator assembly including a coil, is mounted around a portion of the first housing. The second housing has a second bore fluidically coupled to the first bore, and first outlet guide vanes (OGVs) coupled at an entrance of the second bore. The guide vane insert including second OGVs, is disposed within the outlet connection port and fluidically coupled to outlet of the second bore.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: December 14, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: John Franz, Tahir Cader, Ernesto Ferrer Medina
  • Patent number: 11172597
    Abstract: A first supporting element, e.g. a PCB, may have opposed sides. A heat sink body is mounted on one side of the first supporting element, and having peripheral surface(s) for heat dissipating electrical device. A first circuit includes the heat dissipating electrical device(s) mounted and operates at a first voltage level. At least one circuit board assembly is mounted on the other side of the first supporting element, and extends from a first end to a second end. It has a first end connector at the first end, for connecting the first end of the circuit board assembly to the first circuit, and providing a signal interface between the first circuit operating at the first voltage level and a second circuit operating at a second voltage level different or equal to the first voltage level.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: November 9, 2021
    Assignee: Algozen Corporation
    Inventor: Michael John Richards
  • Patent number: 11152844
    Abstract: An electric machine including a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses. It further includes a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings. A cryogenic cooling system is arranged to cool the stator windings to reduce conduction losses in the stator windings.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: October 19, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: Paul R Miller, Stephen M Husband, Alexander C Smith, Charalampos Manolopoulos, Matteo Iacchetti
  • Patent number: 11133721
    Abstract: A pumping system deployable in a wellbore includes a primary driven component, a secondary driven component and a motor. The motor is filled with a motor lubricant and includes a stator, a primary rotor assembly configured for rotation within the stator and a primary shaft connected to the primary rotor assembly and to the primary driven component. The motor further includes an internal magnetic coupling assembly inside the stator. The internal magnetic coupling assembly includes a secondary rotor assembly and a secondary shaft. The secondary rotor assembly and the secondary shaft are isolated from the motor fluid.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 28, 2021
    Assignee: Baker Hughes ESP, Inc.
    Inventors: Robert Lee Marvel, Rene Jose Garcia
  • Patent number: 11101712
    Abstract: An electric motor, an end cap thereof and a manufacturing method of the end cap are provided. The end cap includes an insulating body and a filter circuit board mounted to the insulating body. The filter circuit board includes at least two power conductors for receiving an external power source, an insulating support frame integral with the at least two power conductors, and at least one filter element. One end of the at least one filter element is connected to a corresponding power conductor, and the other end of the at least one filter element is grounded.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: August 24, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yukwai Yeung, Chingsik Lau, Dawei Zhou, Siukin Tam, Tao Fu
  • Patent number: 11043881
    Abstract: A component-mounting device according to an embodiment of the present invention includes a component-mounting board, a connector component, a heat sink, and a first screw portion. The component-mounting board includes a first surface and a second surface opposite to the first surface. The connector component includes a plurality of terminal-fixing portions that fixes a terminal extending in one axis direction orthogonal to the first surface and a base portion that connects between the plurality of terminal-fixing portions and includes an opening portion, the connector component being provided on the first surface. The heat sink faces the second surface and includes a first screw seat that faces the base portion in the one axis direction with the component-mounting board interposed between the first screw seat and the base portion. The first screw portion is disposed inside the opening portion and is engaged with the first screw seat through the component-mounting board.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: June 22, 2021
    Assignee: KYB CORPORATION
    Inventor: Yuu Eguchi
  • Patent number: 11035458
    Abstract: A deceleration device includes a reduction assembly that reduces speed, a motor attached to the reduction assembly, the motor being rotatable about a central axis line, and a heat insulator having a heat conduction coefficient of about 0.04 W/mK or less, the heat insulator being positioned between the motor and the reduction assembly. A surface temperature of an exposed portion of the motor is maintained at a low level, with a simple structure, that prevents burns to human skin in contact with the motor.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: June 15, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Ha Hai Vu, Chien Yu Chen
  • Patent number: 11025124
    Abstract: A motor includes a mounting bracket; a stator mounted to one of opposite sides of the mounting bracket; a rotor is rotatably supported on the stator; and a control unit the other of the opposite sides of the mounting bracket away from the stator. The control unit includes a plate-shaped heat dissipating member fixed to the mounting to the mounting bracket, and a circuit board attached to a side of the heat dissipating member away from the mounting bracket. A seal is formed between a periphery of the heat dissipating member and the mounting bracket.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 1, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yue Li, Maoxiong Jiang, Yingsong Ye, Haijun Hua
  • Patent number: 11025134
    Abstract: A motor includes: a rotor core which rotates about an axis; a plurality of magnets which extend in an axial direction of the axis inside the rotor core and are disposed in a circumferential direction; a shaft body which is disposed coaxially with the rotor core and has a hollow portion through which a fluid is able to pass from a first side to a second side in the axial direction; and a plurality of heat radiation portions which are disposed along the magnet in the circumferential direction and have a planar portion disposed to be parallel to a side surface of the magnet facing a radial direction, wherein the heat radiation portion extends to be closer to the second side than a second side core end surface located on the second side in the axial direction of the rotor core.
    Type: Grant
    Filed: July 19, 2019
    Date of Patent: June 1, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Andrii Pydin
  • Patent number: 11011954
    Abstract: Provided is a motor driving unit (1) capable of achieving space saving of a motor room and cost reduction of a vehicle. The motor driving unit (1) includes a motor (10), an inverter (50) that controls driving of the motor (10), and a transaxle (30). The inverter (50) is disposed at a position facing the second gear (32) in the transaxle (30) in a Z-axis direction of the motor (10), and a flow channel of refrigerant arranged inside the inverter (50) is partitioned off from an internal space of the motor (10) by a single barrier.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: May 18, 2021
    Assignee: NIDEC TOSOK CORPORATION
    Inventor: Yoshihisa Okuhata
  • Patent number: 11005329
    Abstract: An electric motor with a heat source is arranged on a shaft in a co-rotating manner, wherein a first and a second cooling fin arrangement interact in order to dissipate heat from the heat source to the outside.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: May 11, 2021
    Assignee: Lenze Drives GmbH
    Inventors: Andreas Tolksdorf, Karsten Huebner, Holger Hennig
  • Patent number: 11001332
    Abstract: A system and bicycle incorporating same mounts a heat-generating component such as a motor, motor controller, or battery pack, inside a frame tube using a thermally conductive and compliant elastomeric device comprising a base portion having a relatively smooth first side and regularly-repeating protrusions extending away from a second side, wherein the relatively smooth side of the elastomeric device is wrapped around the heat-generating component such that the regularly-repeating protrusions will be in an interference fit with the interior surface of the tubular frame when the heat-generating component is mounted in the frame tube, thereby conducting heat to the frame to exhaust to the environment, providing compliance that allows for dimensional variation of assembled parts, and muting noise and vibration.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: May 11, 2021
    Inventor: Matthew Hendey
  • Patent number: 10978933
    Abstract: A power tool with a combined printed circuit board (PCB) having a doughnut shape and located coaxially with a motor shaft. The combined PCB is secured to a heat sink on one end of the motor and a metal end piece is positioned on an opposite end of the motor. The metal end cap and heat sink are secured to one another via fasteners to provide a rigid coupling. A tabbed end piece is provided between the heat sink and the motor stator and is also secured into place via the fasteners. The tabbed end piece includes wire support tabs that provide strain relief to motor coil leads. The wire support tabs extend axially from circumferential locations of the tabbed end piece and include channels to guide the motor coil leads to solder contact points on the combined PCB.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: April 13, 2021
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventor: Andrew T. Beyerl
  • Patent number: 10958129
    Abstract: A motor includes a rotor with a shaft that extends axially, a stator that surrounds a radial outer side of the rotor, a heat sink that is axially above the stator and provided with cavities that pass conductors therethrough and extend axially, and a substrate that is axially above the heat sink and includes an electronic component mounted thereon, wherein the heat sink includes a contact surface that contacts the substrate or electronic component directly or via a heat dissipating member and an exposed surface that does not come into contact with other members, wherein the exposed surface is located closer to an outer edge than the cavities.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: March 23, 2021
    Assignee: NIDEC CORPORATION
    Inventors: Takahiro Kizu, Takashi Hattori, Toshiya Okamoto, Yuichi Nishikawa, Yoshiaki Yamashita
  • Patent number: 10938277
    Abstract: A control module for an electric motor having a stator that includes a first surface, wherein cooling fluid flows within the stator for providing cooling to the first surface, the control module having a power device having switching elements; a control device for controlling operation of the switching elements; a housing with a first side for mounting to the first surface, wherein the first side includes an aperture allowing a portion of the power device to contact the first surface when the housing is mounted to the first surface for cooling the switching elements, wherein the control device is mounted in the housing on an opposite side of the power device to the first side of the housing and an elastomer is located over the power device and the control device for providing an electrical insulation barrier over the switching elements and electrical components on the control device.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: March 2, 2021
    Assignee: PROTEAN ELECTRIC LIMITED
    Inventor: Geoffrey Owen
  • Patent number: 10916994
    Abstract: The present invention provides a motor structure including a heat dissipation module, a motor base, a circuit board, a rotor and a winding set. The heat dissipation module has a first side and a second side opposite to each other. The motor base is connected to the heat dissipation module. The first side and the second side are uncovered. The thermal conductivity of the heat dissipation module is greater than that of the motor base. The circuit board is disposed on the first side. The rotor is disposed on the second side. The winding set is disposed on the second side and electrically connected to the circuit board to drive the rotor to rotate. By integrating the motor base and the heat dissipation module into one piece, the assembly process is simplified, and the use of components is eliminated. It benefits to achieve the effects of waterproofing, dustproof and protection.
    Type: Grant
    Filed: March 28, 2019
    Date of Patent: February 9, 2021
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Ching-Cheng Zou, Han-En Chien, Hung-Chi Chen, Meng-Yu Chen
  • Patent number: 10903706
    Abstract: A rotor of a rotary electric machine includes a rotor core, magnets, and a rotor shaft. The rotor shaft includes a refrigerant passage, a refrigerant supply part provided on one side of the refrigerant passage and configured to supply the refrigerant from the rotor shaft to the rotor core, a refrigerant discharge part provided on the other side of the refrigerant passage and configured to return the refrigerant from the rotor core to the rotor shaft, and a passage partition part configured to block flow of the refrigerant between the one side and the other side of the refrigerant passage. The rotor core includes a plurality of heat exchange chambers having a circumferential length larger than a radial length, and the heat exchange chamber communicates with the refrigerant supply part on one side of the refrigerant passage and communicates with the refrigerant discharge part on the other side.
    Type: Grant
    Filed: June 11, 2019
    Date of Patent: January 26, 2021
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Shigeharu Wakui
  • Patent number: 10873229
    Abstract: In one possible embodiment, an aircraft electric motor cooling system is provided having an airflow path through a spinner which includes a first airflow path between an inner rotor and a stator, a second airflow path between an outer rotor the stator and a third airflow path along an outer surface of the outer rotor.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: December 22, 2020
    Assignee: AeroVironment, Inc.
    Inventors: Lindsay Aspinwall Sheppard, Bart Dean Hibbs
  • Patent number: 10868450
    Abstract: A rotor of a rotary electric machine includes a rotor core having a slot in an outer circumferential portion thereof, a permanent magnet inserted in the slot, and a resin injected into the slot to fix the permanent magnet in the slot, wherein an injection fixing space into which the resin is injected to fix the permanent magnet in the slot, and a non-injection space into which the resin is not injected are provided in a space within the slot, the non-injection space is disposed at a position adjacent to an outer side of the rotor core in a radial direction with respect to the injection fixing space, and an edge of the non-injection space includes a surface of the resin injected into the injection fixing space, and a first region on an inner surface of the slot which continues to the surface of the resin.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: December 15, 2020
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Keiichiro Kashiwabara, Atsushi Nishida, Manabu Yazaki
  • Patent number: 10862366
    Abstract: A rotating electric machine includes a rotating shaft, a rotor, a stator, a housing, control modules and fixing members. The housing, which is grounded, rotatably supports the rotating shaft and accommodates the rotor and the stator. The control modules are arranged around the rotating shaft and adjacent to one another. Each of the control modules includes switching elements, a supporting part that supports the switching elements, and at least one connection part having a ground terminal formed therein. The fixing members are provided to fix the connection parts of the control modules to the housing. Each adjacent pair of the connection parts respectively belonging to two different ones of the control modules are together fixed to the housing by a corresponding one of the fixing members; the ground terminals formed in the adjacent pair of the connection parts are together electrically connected to the housing.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: December 8, 2020
    Assignee: DENSO CORPORATION
    Inventors: Naoki Hashimoto, Nobuo Isogai
  • Patent number: 10840776
    Abstract: A brushless direct current electric motor assembly includes a housing having a first end and a second end and a stator disposed in the housing. The assembly further includes a rotor subassembly disposed in the stator, the rotor subassembly having a shaft having a first end proximate the first end of the housing and a second end proximate the second end of the housing. The assembly further includes a controller disposed in the housing, the controller configured to control rotation of the shaft. The first end of the shaft is configured to provide a rotational output.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: November 17, 2020
    Assignee: ACTUATOR ELECTRIC MOTORS
    Inventors: Wang Wei, Zhu Hao, Jonathan Funkhouser
  • Patent number: 10840770
    Abstract: An electrical rotating machine includes a housing which has a bearing mounted on a wall thereof. The housing also has a plurality of air inlets, a plurality of air outlets, and spokes. The spokes extend from the bearing in a radial direction of the housing to isolate the air inlets from each other in a circumferential direction of the housing. Each of the spokes is equipped with a heat sink exposed to a flow of cooling air entering the housing through the air inlet to dissipate heat, as transmitted to the spoke, thereby minimizing transfer of the heat to the bearing through the spokes.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: November 17, 2020
    Assignee: DENSO CORPORATION
    Inventors: Masatoshi Komura, Tomoyuki Shima, Yosuke Sekiyama, Takuya Kudo
  • Patent number: 10826345
    Abstract: A conductor a method of forming a conductor can include providing a hollow base conductor defining a fluid channel along the base conductor, and a solid conductor arranged about the perimeter of the hollow base conductor, wherein the fluid channel can be configured to allow a fluid to flow via the channel.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: November 3, 2020
    Assignee: GE Aviation Systems LLC
    Inventors: Hao Huang, Wei Zhang, Xiaochuan Jia
  • Patent number: 10826355
    Abstract: In an electric drive device, a motor housing includes an end face part opposite to an output part of a rotating shaft of a motor. An electronic control part is arranged at the end face part of the motor housing, and includes a control circuit part, a power supply circuit part, and a power conversion circuit part. The power conversion circuit part is mounted to a power conversion part heat dissipation region of the end face part of the motor housing. The power supply circuit part is mounted to a power supply part heat dissipation region of the end face part of the motor housing. A power conversion circuit part holder is attached to a portion of the end face part around the rotating shaft, and includes a resilient function member structured to press and hold the power conversion circuit part on the power conversion part heat dissipation region.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: November 3, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventors: Takuro Kanazawa, Keiji Hamada, Haruaki Motoda
  • Patent number: 10804756
    Abstract: Presently disclosed embodiments are directed to systems and apparatuses comprising a stator core having air flow slots for cooling. Specifically, the disclosed embodiments utilize a stator comprising laminated core having an inner circumference, a plurality of winding slots in the laminate core extending radially from the inner circumference, at least one air flow slot in the laminate core, wherein the at least one air flow slot is fluidly connected to at least one winding slot, and a winding located in the plurality of winding slots.
    Type: Grant
    Filed: July 25, 2017
    Date of Patent: October 13, 2020
    Assignee: Toshiba International Corporation
    Inventor: Chetan Channapatana
  • Patent number: 10797570
    Abstract: Power conversion circuit unit defined by rotation shaft-side line facing toward rotation shaft of electric motor, control output terminal-side line facing toward coil input terminals of electric motor and side lines connecting both end portions of rotation shaft-side line and control output terminal-side line is packaged with synthetic resin. Three-phase control output terminals connected to the coil input terminals are formed at control output terminal-side line. Power switching elements forming upper and lower arms for each phase are arranged in a zigzag formation along control output terminal-side line with power switching elements being offset from a substantially middle between rotation shaft-side line and control output terminal-side line toward control output terminal-side line. With this, size of power conversion circuit unit can be reduced, and heat of power conversion circuit unit can be efficiently released to the outside.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: October 6, 2020
    Assignee: Hitachi Automotive Systems, Ltd.
    Inventors: Tomishige Yatsugi, Takuro Kanazawa
  • Patent number: 10797565
    Abstract: A motor with an inner fan includes a rotor rotating with a shaft, a stator opposing the outer peripheral surface of the rotor, an end ring connected to the rotor, stator wiring connected to the stator, a fan rotating with the shaft through a sleeve, a fan guide opposing the tip end of the blade outer periphery of the fan, and a frame storing the rotor, the stator, the fan, the fan guide, the end ring, and the stator wiring. The rotor includes an axial duct penetrating the rotor in the axial direction of the rotor and a radial duct communicating with the axial duct and penetrating the rotor radially from the inside to the outside of the rotor. The fan is an inner fan arranged inside the frame, the inner fan is of a diagonal flow type, and the discharge direction of the inner fan is the inward direction.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: October 6, 2020
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Isao Hagiya, Misato Sato, Takayuki Koyama, Kenichi Sugimoto
  • Patent number: 10778066
    Abstract: A circuit board has first rectifying element connecting portions and second rectifying element connecting portions, and is disposed between a first rectifying element holding portion and a second rectifying element holding portion, a plurality of first rectifying elements are each held by the first rectifying element holding portion, and are connected to the first rectifying element connecting portions by extending a first leading electrode axially, a plurality of second rectifying elements are each held by the second rectifying element holding portion, and are connected to the second rectifying element connecting portion by extending a second leading electrode axially, and a radial ventilation channel that passes through the rectifying apparatus in a radial direction is configured by disposing the circuit board so as to be spaced apart from at least one of the first rectifying element holding portion and the second rectifying element holding portion in an axial direction.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: September 15, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masao Akiyoshi, Yuzuru Kobayashi
  • Patent number: 10770953
    Abstract: A rotary electric machine includes a stator having a circumferentially spaced series of axially extending teeth defining winding slots therebetween. Stator windings are at least partially disposed in each winding slot and electrically connected to form a plurality of phases. One or more slots contain the same magnitude of current at substantially all times for each phase. Structure defines a plurality of elongated coolant passageways disposed in each winding slot. A subset of the coolant passageways contained in the slots for a single phase is an even number. Fluid flows in one direction for half of the subset of coolant passageways and in the opposite direction for the other half of the subset of coolant passageways. At least two of the coolant passageways in the machine are fluidly connected in parallel. At least one of the coolant passageways is located circumferentially between two windings in the same slot.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: September 8, 2020
    Assignee: LCDRIVES CORP.
    Inventor: Russel Hugh Marvin
  • Patent number: 10749415
    Abstract: Provided is a motor device that prevents an increase in size in the radial direction of a motor while providing redundancy in controlling driving of the motor. A motor device includes: a motor including a motor shaft; a first control board on which a first power circuit and a first control circuit are mounted in combination, and a second control board on which a second power circuit and a second control circuit are mounted in combination, as control boards constructing a circuit that controls driving of the motor; and a housing that accommodates the motor and the control boards together. Each of the control boards is disposed to cross a radial direction that is orthogonal to an axial direction of the motor.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: August 18, 2020
    Assignee: JTEKT CORPORATION
    Inventor: Yuto Sato
  • Patent number: 10715015
    Abstract: An electronics package for an alternator includes a positive carrier member having an inner side and an outer side, a plurality of switches connected to the positive carrier member, and a terminal assembly engaging the positive carrier member. The terminal assembly includes an electrically insulative portion and a plurality of electrical traces attached to the electrically insulative portion. The electrically insulative portion includes a post extending from the inner side to the outer side of the positive carrier member, a first shoulder engaging the outer side of the positive carrier member, and a second shoulder engaging the inner side of the positive carrier member. The second shoulder is provided by a deformed segment of the post. The post, first shoulder, and second shoulder are all formed as a unitary component.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: July 14, 2020
    Assignee: BorgWarner Inc.
    Inventors: Christopher Bledsoe, Kirk Neet
  • Patent number: 10700575
    Abstract: A power tool includes a housing, a battery connection portion supported by the housing, a drive mechanism configured to operate a working element, and a brushless DC motor positioned within the housing and connected to the drive mechanism. The motor includes a rotor, stator surrounding the motor, and an output shaft fixed to the rotor such that movement of the rotor is transmitted to the output shaft. The motor also includes a fan coupled to the output shaft to rotate with the output shaft and the rotor, and a brass bushing fixed to the output shaft to rotate with the rotor and the output shaft relative to the stator. The bushing includes a balancing feature.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: June 30, 2020
    Assignee: Milwaukee Electric Tool Corporation
    Inventors: Jeffrey C. Hessenberger, Michael Kolden, Andrew T. Beyerl
  • Patent number: 10693345
    Abstract: A power tool with a combined printed circuit board (PCB) having a doughnut shape and located coaxially with a motor shaft. The combined PCB is secured to a heat sink on one end of the motor and a metal end piece is positioned on an opposite end of the motor. The metal end cap and heat sink are secured to one another via fasteners to provide a rigid coupling. A tabbed end piece is provided between the heat sink and the motor stator and is also secured into place via the fasteners. The tabbed end piece includes wire support tabs that provide strain relief to motor coil leads. The wire support tabs extend axially from circumferential locations of the tabbed end piece and include channels to guide the motor coil leads to solder contact points on the combined PCB.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: June 23, 2020
    Assignee: Milwaukee Electric Tool Corporation
    Inventor: Andrew T. Beyerl
  • Patent number: 10681848
    Abstract: An ECU, a control box, and a CMF using the ECU are provided. The control box includes a heat sink and the ECU. The ECU include a support bracket mounted on the heat sink, a power supply board supported by the support bracket, and a signal board stacked over the power supply board and electrically connecting with the power supply board. The support bracket is made of an insulation material. The power supply board carries a plurality of power devices which are in contact with the heat sink for heat dissipation multiple power devices.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 9, 2020
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: You Qing Xiang, Xiao Jun Yan, Nan Zheng, Yun Chen, Hai Dong Wan, Jian Zhao
  • Patent number: 10658905
    Abstract: A rotating electrical machine includes a rotating electrical machine body including a stator, a rotor, a fan configured to circulate a coolant for cooling the stator and the rotor, and a casing containing the stator, the rotor and the fan; and a cooler connected to the rotating electrical machine body. The coolant flows from the machine body into the cooler. The cooler cools the coolant. The coolant flows out of the cooler into the machine body. The cooler has a flow resistance Ra satisfying a relation 0.15<(Ra/Rm)<(P0/P1), wherein Ra is a flow resistance of the coolant in the cooler, Rm is a flow resistance of the coolant in the rotating electrical machine body, P0 is a shutoff pressure of the fan, and P1 is a pressure at an operating point of the fan when the flow resistance Ra of the cooler is assumed to be zero.
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: May 19, 2020
    Assignee: Hitachi Industrial Products, Ltd.
    Inventors: Ryuuichirou Iwano, Masanori Sawahata, Akeshi Takahashi
  • Patent number: 10608495
    Abstract: A liquid-cooled motor includes a motor arranged inside a motor case; an internal tube arranged inside the motor case; an external tube arranged outside the motor case; and a supporting member fixed to the motor case to support the internal tube and the external tube and to allow the internal tube and the external tube to be communicated with each other. The supporting member includes a first supporting portion arranged to the motor case side to support the internal tube; and a second supporting portion arranged to another side opposite to the motor case side to support the external tube. The first supporting portion includes sealing members arranged along an outer circumference surface of the internal tube; an air chamber arranged between the sealing members; and a water draining portion allowing the air chamber and an outside portion of the motor case to be communicated with each other.
    Type: Grant
    Filed: June 21, 2018
    Date of Patent: March 31, 2020
    Assignee: KUBOTA CORPORATION
    Inventors: Sumio Yagyu, Kazuto Okazaki
  • Patent number: 10604002
    Abstract: Disclosed is road vehicle wheel with an in-wheel electric motor that includes a rim configured for mounting at least one tire on the rim; a rim support configured for supporting the rim on a non-rotating wheel part to allow rotation of the rim with respect to the non-rotating wheel part; a stator of the in-wheel electric motor, the stator including electromagnets and being supported on the non-rotating wheel part; and a rotor of the in-wheel electric motor, the rotor including permanent magnets and being supported on the rim support such that any forces exerted on the rim do not act on the rotor. The rim is supported such that any forces exerted on the rim are directly born by the rim support and is not in direct contact with the rotor.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: March 31, 2020
    Assignee: E-TRACTION EUROPE B.V.
    Inventors: Reinhard Peter Van Der Wal, Timothy Seventer
  • Patent number: 10597118
    Abstract: A method and system for providing a watercraft device are disclosed. The watercraft device comprises a board, a throttle coupled to a top surface of the board, a hydrofoil coupled to a bottom surface of the board, and an electric propeller system coupled to the hydrofoil. The electric propeller system powers the watercraft device using information generated from the throttle. A center of buoyancy in a non-foiling mode of the watercraft device and a center of lift in a foiling mode of the watercraft device are aligned.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: March 24, 2020
    Assignee: KAI CONCEPTS, LLC
    Inventors: Donald Lewis Montague, Joseph Andrew Brock, Jamieson Edward Schulte, Daniel Elliot Schabb
  • Patent number: 10601266
    Abstract: A brushless can motor includes a motor shaft, a rotor fixed to the motor shaft, a first end cap on which a first end of the motor shaft is rotatably supported, a second end cap on which a second end of the motor shaft is rotatably supported, and a stator placed between the first end cap and the second end cap along a longitudinal direction of the brushless motor. The rotor includes a plurality of magnets. The stator is configured with a plurality of windings adapted to connect to an external motor controller. The first end cap, the second end cap, and the stator are all formed in substantially cylindrical shape, such that said brushless motor, in its assembled form, has a substantially can shape.
    Type: Grant
    Filed: June 1, 2015
    Date of Patent: March 24, 2020
    Assignee: TTI (MACAO COMMERCIAL OFFSHORE) LIMITED
    Inventors: Yijia Chang, Kaiming Wei, Jianwei He, Zhicun Qian
  • Patent number: 10594185
    Abstract: Disclosed in an embodiment are a rotor assembly and a motor including the same, the rotor assembly including: a rotor part; and a first cover including a first fixing plate for covering one side of the rotor part and a plurality of first vane parts protruding from the first fixing plate, wherein a first angle, which is formed by an imaginary line extending from an outer end of each of the first vane parts and a tangential line of a first imaginary circle, is greater than a second angle formed by an imaginary line extending from an inner end of each of the first vane parts and a tangential line of a second imaginary circle, centers of the first imaginary circle and the second imaginary circle are the same as a center of the first fixing plate, the tangential line of the first imaginary circle is a tangential line at a position at which the first imaginary circle and the outer end meet and the tangential line of the second imaginary circle is a tangential line at a position at which the second imaginary circle
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: March 17, 2020
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Hyun Soo Yu
  • Patent number: 10554100
    Abstract: In an electric power steering apparatus, a motor housing includes an axial end part opposite to an output part of an electric motor. An electronic control section is arranged at the axial end part of the motor housing. The electronic control section includes a control circuit part, a power supply circuit part, and a power conversion circuit part. The axial end part of the motor housing includes a power conversion part thermal radiation region and a power supply part thermal radiation region. The power conversion circuit part is mounted to the power conversion part thermal radiation region to allow heat to be transferred from the power conversion circuit part to the motor housing. The power supply circuit part is mounted to the power supply part thermal radiation region to allow heat to be transferred from the power supply circuit part to the motor housing.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: February 4, 2020
    Assignee: HITACHI AUTOMOTIVE SYSTEMS, LTD.
    Inventor: Keiji Hamada
  • Patent number: 10513186
    Abstract: The in-wheel electric motor system with an increased electromagnetic flux and energy recovery brake provides electromagnetic flux with optimal characteristics of starting torque and peak power in all modes of motor operating. It becomes possible because the stator of the electric motor consists of windings with a “star” connection and windings with a “wye” connection in such a way that electromagnetic fields of these windings are summed and the number of phases of the motor is more than a standard motor that has one type of winding.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: December 24, 2019
    Inventors: Denis Vasilyevich Shchurovskiy, Waldemar Olegovich Wagner
  • Patent number: 10498188
    Abstract: A motor equipped with dampers for reducing the vibration and noise of a rotator is disclosed. The motor includes: a stator block configured such that a core around is fastened and installed in the upper outer portion of the inside of a cover; a printed circuit board (PCB) fastened and installed below the stator block inside a motor housing; a shaft installed inside the stator block; and a rotor configured to include a magnet; wherein the motor housing includes an upper cover and a lower cover, a plurality of fastening portions is formed on the upper cover, and a plurality of fastening depressions is formed on the lower cover; and wherein the motor further includes dampers configured to receive and accommodate the fastening portions, to be inserted over side surfaces of the base portion of the stator block, and to cancel vibration and noise.
    Type: Grant
    Filed: February 9, 2018
    Date of Patent: December 3, 2019
    Assignee: Hyoseong Electric Co., Ltd.
    Inventor: Jingeun Jung
  • Patent number: 10491079
    Abstract: The invention relates mainly to a rotary electrical machine for a motor vehicle, comprising: a heat dissipater (65); two power modules (50) integrated in the heat dissipater (65), each comprising rectifier elements (53) which form three rectifier bridge arms (52), connection terminals (58) associated with the rectifier bridge arms (52), and a control unit which can control the rectifier bridge arms; and a connector (61) which establishes electrical connections, in particular between the terminals (58) for connection of the power modules (50) and the phase outputs of the rotary electrical machine.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: November 26, 2019
    Assignee: Valeo Equipements Electriques Moteur
    Inventors: Svetislav Jugovic, Fabrice Tauvron, Farouk Boudjemai, Pierre-François Ragaine, Laurent De Lamarre, Hugues Tempez