Heat-exchange Structure Patents (Class 310/64)
  • 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: 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: 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: 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: 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: 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: 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
  • Patent number: 10454350
    Abstract: A controller-integrated rotating electric machine includes a rotating electric machine having a rotor, a stator, and a housing, and a controller having a plurality of switching element modules. Cooling fins having insulating coatings on surfaces thereof facing the switching element modules are bonded to the switching element module. The controller-integrated rotating electric machine of which the cooling fins are electrically insulated by having the cooling fins having the insulating coating on the surfaces facing the switching element modules, so that the electrolytic corrosion between the cooling fins and the heat sinks of the switching element modules is suppressed from occurring.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: October 22, 2019
    Assignee: DENSO CORPORATION
    Inventor: Takatoshi Inokuchi
  • Patent number: 10415572
    Abstract: There is provided an electric supercharger having a compressor including a compressor impeller, a motor housing, an electric motor rotationally driving the compressor, and a first bearing and a second bearing provided to support a shaft and a rotor in the motor housing. The first bearing is located on the compressor side of the rotor and the second bearing is located on the other side of the rotor. The motor housing includes a thermal conductive passage through which heat generated by a coil wound around a stator is transmitted to the first and second bearings. The thermal conductive passage between the coil and the first bearing is formed with a reduced thickness portion in such a way that thickness of the thermal conductive passage is reduced in a direction that is perpendicular to a direction in which the heat is transmitted through the thermal conductive passage.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: September 17, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Makio Oshita, Satoshi Umemura, Yutaka Fujiki, Toshihiro Yamamichi
  • Patent number: 10411574
    Abstract: An electronic control unit includes two inverters, a magnetic sensor, a failure detection unit, an inverter driving unit, a signal examination unit, and a failed element identification unit. The magnetic sensor detects a magnetic flux generated around a winding. The failure detection unit detects an ON-state failure of the inverter. When the ON-state failure is detected, the inverter driving unit stops driving the inverter to which the ON-state failure has been detected, and continues driving the other inverter. The signal examination unit examines a presence or absence of a special signal. When there is a signal appearing according to a special magnetic flux, the failed element identification unit identifies a failed switching element based on a motor electric angle generated by the signal.
    Type: Grant
    Filed: May 9, 2017
    Date of Patent: September 10, 2019
    Assignee: DENSO CORPORATION
    Inventor: Kotaro Nakashima
  • Patent number: 10374493
    Abstract: A configuration of a rectifying device configuring a vehicle-use rotating electric machine is such that when a lead drawn out from a stator winding is inserted into a through hole of a rear bracket forming a casing, a periphery of the lead is enclosed, and the through hole sealed, by a tubular member extended from a main body portion of a terminal block, and the through hole not blocked by the tubular member is sealed by a stopper portion extended in the same way from a main body portion of the terminal block. Even when the number of leads drawn out is reduced, standardization of the rear bracket is carried out by the through hole (3a) of the rear bracket being sealed by the stopper portion.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: August 6, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yuzuru Kobayashi, Masao Akiyoshi, Kazunori Tanaka
  • Patent number: 10374472
    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.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: August 6, 2019
    Assignee: SPAL AUTOMOTIVE S.R.L.
    Inventor: Pietro DeFilippis
  • Patent number: 10355553
    Abstract: Disclosed is an electric machine (10) comprising a pole housing (12) and a printed circuit board (14) for controlling the electric machine (10). The circuit board (14) is arranged on a flanged side (16) of the pole housing (12), and a protective wall (18) which protects the circuit board (14) from loose small parts is arranged between the circuit board (14) and the pole housing (12).
    Type: Grant
    Filed: December 29, 2014
    Date of Patent: July 16, 2019
    Assignee: Robert Bosch GmbH
    Inventors: Christian Meyer, Markus Peters, Sebastian Hansen, Torsten Gmuend, Christian Acker
  • Patent number: 10348159
    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: July 10, 2017
    Date of Patent: July 9, 2019
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventor: Andrew T. Beyerl
  • Patent number: 10348164
    Abstract: In a brush holder accommodating part 26d of a gear housing 26, paired flat surface parts 26c and paired curved parts 26b are alternately disposed so as to be formed into an elliptical shape, one of the paired flat surface parts is formed with first heat sinks 26i, and two brushes 20 and 20 mounted on a brush holder unit 19 accommodated in the brush holder accommodating part 26d are disposed near the first heat sinks 26i.
    Type: Grant
    Filed: April 20, 2018
    Date of Patent: July 9, 2019
    Assignee: Mitsuba Corporation
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya
  • Patent number: 10348167
    Abstract: A ceiling fan motor with a reduced height includes a stator, a rotor and a circuit unit. The stator includes an iron core and a shaft. The iron core has an assembly hole, and the shaft extends through the assembly hole in an extending direction. The rotor is rotatably coupled with an outer periphery of the shaft. The circuit unit is arranged between the iron core and the shaft in a radial direction of the shaft perpendicular to the extending direction of the shaft, or is arranged between the iron core and the housing of the rotor in the radial direction of the shaft.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 9, 2019
    Assignee: Sunonwealth Electric Machine Industry Co., Ltd.
    Inventors: Tso-Kuo Yin, Duo-Nian Shan
  • Patent number: 10332822
    Abstract: An electronic package connectable to an electric machine includes a cooling tower having a metallic wall with a radially outer wall surface. The radially outer wall surface includes discrete, radially outwardly projecting pedestals. The planar pedestal mounting surfaces are parallel with the central axis such that the radial distance between the axis and the radially outer wall surface is greater within the periphery than outside the periphery. Power modules are mounted to the pedestals. Each power module includes a base in thermal contact with a pedestal mounting surface and an opposing interior surface in thermal communication with a MOSFET power electronics device. A cover plate is spaced from the base interior surface. A dielectric housing member surrounds the MOSFET power electronics devices. An electrical connection terminal is disposed outside the periphery of each module. An electric machine including such an electronic package is also disclosed.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: June 25, 2019
    Assignee: BORGWARNER INC.
    Inventor: Michael D. Bradfield
  • Patent number: 10320265
    Abstract: A wiper motor has: a magnet disposed on the yoke and formed with at least four poles; an armature disposed on an inner side of the magnet; a speed reduction mechanism unit having an output shaft for transmitting the rotation of the armature shaft; a gear housing connected to the yoke; a gear housing cover covering an opening of the gear housing; a magnet attached to the output shaft of the speed reduction mechanism unit; an absolute position detecting sensor disposed so as to face the magnet; and a control board having the absolute position detecting sensor attached thereto, the control board being disposed between the gear housing and the gear housing cover, and configured to control the rotation of the armature shaft.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: June 11, 2019
    Assignee: Mitsuba Corporation
    Inventors: Hiroto Tanaka, Takeshi Kanai, Masaaki Kimura, Koji Tsuchiya, Hiroji Okabe, Toshiyuki Amagasa, Hachidai Watanabe
  • Patent number: 10308335
    Abstract: A watercraft comprises a motor, an inertial mass, and a fin. The motor oscillates the inertial mass about an axis, producing a torque reaction on and oscillation of the motor. Oscillation of the motor is communicated to the fin, producing thrust.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: June 4, 2019
    Inventor: Martin Spencer Garthwaite
  • Patent number: 10298098
    Abstract: A power tool includes a stator having a coil, a sensor circuit board attached to the stator and on which a magnetic sensor is provided, the sensor circuit board having a first side facing the stator and a second side opposite the first side, a rotor configured to rotate with respect to the stator, a tool-accessory retaining part configured to be driven by the rotor and a power-supply line configured to supply electrical power to the coil. The power-supply line is connected to the coil without traversing the second side of the sensor circuit board.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: May 21, 2019
    Assignee: MAKITA CORPORATION
    Inventor: Akira Niwa
  • Patent number: 10277091
    Abstract: Disclosed is an end cap for a motor housing containing an electric motor, including a tubular structure defining an interior space, including an open first end connectable to the mater casing; a second end, including a first planar surface; a second planar surface offset from the first planar surface and substantially parallel to the first planar surface; and at least one air grate surface substantially perpendicular to the first planar surface and the second planar surface, positioned between and attached to the first planar surface and the second planar surface, and wherein the at least one air grate surface includes at least one air grate configured to permit air flow into and/or out of the interior space.
    Type: Grant
    Filed: June 1, 2017
    Date of Patent: April 30, 2019
    Assignee: Asia Connection LLC
    Inventor: Reza Afshar
  • Patent number: 10236749
    Abstract: A motor comprises a motor main body including a rotor and a stator around which a coil is wound, a drive circuit part including a circuit board to which a drive circuit including a power element is attached on mainly one face, a heat sink arranged on another face of the circuit board and to radiate heat of the drive circuit part, and a winding terminal to which at one side of the winding terminal an end portion of the coil of the motor main body is electrically connected. Another side of the winding terminal is partially electrically connected to the power element attached to the circuit board, and the winding terminal conducts heat generated by the power element from the one face to the other face of the circuit board.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: March 19, 2019
    Assignee: MINEBEA MITSUMI INC.
    Inventors: Yutaka Kamogi, Yasuhiro Ikehara
  • Patent number: 10236750
    Abstract: A rotating electric machine with a built-in control device that can be downsized. The rotating electric machine with a built-in control device includes a rotor including a permanent magnet of sensor use provided on a rear side of a rotor shaft, a front side housing fixed with a first bearing supporting a front side of the rotor shaft, a motor frame including a rotor and a stator, a heat sink fixed with a second bearing supporting the rear side of the rotor shaft, a control substrate mounting a rotary sensor, a microcomputer, and a driving circuit. The microcomputer controls the driving circuit based on signals from the rotary sensor and drives a plurality of switching elements. At least one of a smoothing condenser and a noise reduction coil, connected to the switching elements, is arranged at a far rear side of the control substrate.
    Type: Grant
    Filed: November 18, 2014
    Date of Patent: March 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yu Hirotani, Masatsugu Nakano, Hiroyuki Waku, Hiroyuki Akita, Koji Kise, Hiroyasu Iwabuki, Kosuke Nakano
  • Patent number: 10237967
    Abstract: Among other things, an electronics assembly within an imaging system is provided. The electronics assembly includes a circuit board assembly through which a signal is delivered. The circuit board assembly defines a heat transfer opening between a first side and a second side. An electronics component is electrically coupled to the first side of the circuit board assembly. A heat transfer component supports the electronics component. The heat transfer component includes a base portion coupled to the electronics component and to the circuit board assembly. The heat transfer component includes a heat dissipation portion extending through the heat transfer opening of the circuit board assembly. The heat dissipation portion dissipates heat generated by the electronics component.
    Type: Grant
    Filed: October 2, 2015
    Date of Patent: March 19, 2019
    Assignee: Analogic Corporation
    Inventors: Richard A. Maillet, Jr., Garry Allen Fellows
  • Patent number: 10224779
    Abstract: According to an embodiment of the invention, an electric machine is provided. The machine includes a support structure, a stator secured to the support structure, and a rotor rotatably secured to the support structure. The machine also includes a circuit board positioned at least partially within the support structure. The circuit board is adapted for controlling an electromagnetic field produced by the stator. The machine also includes a potting material in contact with a first surface of the circuit board and a harrier for at least partially containing the potting material.
    Type: Grant
    Filed: October 2, 2014
    Date of Patent: March 5, 2019
    Assignee: Regal Beloit America, Inc.
    Inventors: Philip Wayne Johnson, Joshua James Westhoff, Michael Allen Marks
  • Patent number: 10211709
    Abstract: In an electric power steering device, a power module includes a plurality of terminals including a motor control terminal and a power supply terminal connected to a power supply, each having a distal end portion being oriented toward a control board. A holder has holes through which the terminals pass. The terminals each have the distal end portion to be connected to the control board. A winding terminal has a distal end portion to be connected to the distal end portion of the motor control terminal. The control unit further includes a junction terminal. The junction terminal and the power supply terminal each having a distal end portion extending from the control board toward the connector assembly are respectively connected to connector terminals of the connector assembly.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: February 19, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihito Asao, Akihiko Mori