Cooling Or Fluid Contact Patents (Class 310/52)
  • Patent number: 11885229
    Abstract: The present disclosure pertains to electric machines such as electric propulsion systems for aircraft that integrated cooling systems, and methods of cooling such an electric machine. Exemplary electric machines include an electric motor that has a stator, a rotor, and a drive shaft operably coupled to the rotor. Exemplary electric machines further include a motor cooling conduit that defines a pathway for conveying a cooling fluid through or around at least a portion of the electric motor, a casing assembly that circumferentially surrounds at least a portion of the electric motor, a casing assembly conduit integrally formed within at least a portion of the casing assembly which defines a pathway for conveying the cooling fluid through the at least a portion of the casing assembly, and a pump or compressor operably coupled to the drive shaft and configured to circulate the cooling fluid through the motor cooling conduit and the casing assembly conduit.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 30, 2024
    Assignee: General Electric Company
    Inventors: William Dwight Gerstler, Florian Stefan Hoefler, Mark Aaron Chan Chan
  • Patent number: 11884409
    Abstract: Aircraft electric motors include a motor unit having a rotor and a stator. The stator includes a plurality of windings and cooling channels arranged to provide cooling thereto. A drive unit is configured to drive operation of the motor unit. A cooling system includes a working fluid arranged within a cooling fluid flow path, wherein the cooling fluid flow path includes a liquid cooling path configured to direct flow of the working fluid through, at least, the cooling channels of the motor unit and a vapor cooling path configured to direct flow of the working fluid through the drive unit and a separator arranged upstream of each of the liquid cooling path and the vapor cooling path and configured to direct a liquid portion of the working fluid into the liquid cooling path and configured to direct a vapor portion of the working fluid into the vapor cooling path.
    Type: Grant
    Filed: November 1, 2021
    Date of Patent: January 30, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Abbas A Alahyari, Kimberly Rae Saviers, Joseph Turney, Jagadeesh Kumar Tangudu
  • Patent number: 11799363
    Abstract: A slotless electric motor provides a phase change material that may communicate thermally through the sides of coils directly attached to the outer circumference of the central stator. A control system modeling the motor allows effective operation for short durations.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: October 24, 2023
    Assignee: Hinetics LLC
    Inventors: Kiruba S. Haran, Xuan Yi, Yangxue Yu
  • Patent number: 11770042
    Abstract: A hybrid drive assembly is provided having a hybrid drive housing with an electric motor and a disconnect clutch therein. A transmission is connected to the hybrid drive housing and a torque converter is provided between the electric motor and the transmission. A baffle extends radially between the torque converter and the hybrid drive housing. The baffle includes a ring-shaped body that is affixed to the hybrid drive housing and extends completely around a transmission side periphery of the hybrid drive housing. A fluid pathway is located on or in the baffle, and orifices extend from the fluid pathway toward the electric motor. A fluid inlet port is connected to the fluid pathway, and a fluid connection is provided from a pressurized fluid source to the fluid inlet port. This allows fluid circulated by a pump within the transmission, to be sprayed on the electric motor for cooling.
    Type: Grant
    Filed: January 6, 2021
    Date of Patent: September 26, 2023
    Assignee: Schaeffler Technologies AG & Co. KG
    Inventor: John Ramsey
  • Patent number: 11756709
    Abstract: An oxide superconducting wire includes a superconductor laminate including an oxide superconducting layer on at least one surface of a base material, and a plating layer which is included in a stabilizing layer of the superconductor laminate and formed by plating. A surface roughness Ra of the plating layer is 1.0 ?m or more and 2.0 ?m or less. An entire average crystal grain size of the plating layer is 0.86 ?m or more and 3.05 ?m or less.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: September 12, 2023
    Assignee: Fujikura Ltd.
    Inventor: Naonori Nakamura
  • Patent number: 11705770
    Abstract: A vehicle includes a battery, an electric machine, a thermistor, and a controller. The electric machine is configured to draw electrical power from the battery to propel the vehicle. The electric machine has a rotor and a stator. The stator has a core defining a plurality of slots and windings arranged within the slots. The thermistor is disposed within a first of the slots between first and second axial ends of the core and is configured to measure a temperature of the electric machine. The controller is programmed to control a power output of the electric machine based on the temperature of the electric machine.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: July 18, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Akash Changarankumarath Pradeepkumar, Singar Rathnam
  • Patent number: 11689074
    Abstract: An adhesive-reinforced rotor for a rotary electric machine includes rotor lamination layers (“rotor lams”) having axial inner surfaces collectively defining rotor openings through the rotor lams. The rotor also includes reinforcement blocks disposed within a respective one of the rotor openings. A polymer primer/adhesive layer of the rotor having a bond line thickness of less than 1 mm is disposed between the one or more reinforcement blocks and the axial inner surfaces of the rotor lams. The reinforcement blocks and the primer/adhesive layer each have a tensile strength of at least 50 MPa. A modulus of elasticity of the reinforcement blocks is at least three times greater than that of the materials of the polymer primer/adhesive layer. A method of constructing an adhesive-reinforced rotor is also described herein.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: June 27, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Anthony M. Coppola, Kestutis A. Sonta, Alireza Fatemi, Gayatri V. Dadheech, Yew Sum Leong, Xiaosong Huang
  • Patent number: 11686214
    Abstract: A turbomachine system includes a turbomachine provided with a turbomachine rotor. The turbomachine rotor is comprised of a turbomachine shaft with a first shaft end and a second shaft end. The turbomachine shaft is supported by active magnetic bearings for rotation in a turbomachine casing. The turbomachine system further includes a rotary machine drivingly coupled to the first shaft end, and a first closed cooling circuit adapted to circulate a cooling fluid therein and fluidly coupled to the active magnetic bearings to remove heat therefrom. The closed cooling circuit includes a cooling fluid impeller mounted on the turbomachine shaft for rotation therewith and adapted to circulate the cooling fluid in the closed cooling circuit. The closed cooling circuit further includes a heat exchanger adapted to remove heat from the cooling fluid. A method of operating a turbomachine system is further disclosed.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: June 27, 2023
    Assignee: Nuovo Pignone Tecnologie SRL
    Inventors: Duccio Fioravanti, Giuseppe Iurisci, Paola Di Festa, Giuseppe Sassanelli
  • Patent number: 11658524
    Abstract: Provided is a rotary electric machine that is able to suppress vibration noise of the rotary electric machine caused by an out-of-plane deformation. The rotary electric machine includes a stator including a frame being an annular member, and a plurality of split cores arranged in an annular shape and fitted to and held by a radially inner portion of the frame, wherein the frame is formed such that an inner diameter of each of both end portions thereof is smaller than an inner diameter of an axial middle portion thereof, and fitting fastening force between the frame and each split core is set to be greater at both the end portions than at the axial middle portion.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: May 23, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keiichi Konishi, Naoki Ohashi, Ryuichi Kitora, Koichi Shimizu
  • Patent number: 11626224
    Abstract: Various embodiments include a superconducting coil device comprising: a coil winding with at least one turn of a superconducting strip conductor; wherein the strip conductor has a first main face and a second main face. The coil winding includes a turning region wherein the strip conductor is bent such that, in the turning region, the strip conductor has a distinct change of direction in a longitudinal direction and simultaneously changes the orientation of both the first main face and the second main face with respect to a central axis of the coil device.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: April 11, 2023
    Assignee: SIEMENS ENERGY GLOBAL GMBH & CO. KG
    Inventors: Tabea Arndt, Marijn Pieter Oomen
  • Patent number: 11626776
    Abstract: Various methods and systems are provided for a system for cooling an electric motor that includes a rotor shaft rotatably mounted inside a motor housing, a lamination stack integrally connected to the rotor shaft, an encoder-end balance plate integrally connected to a first end of the lamination stack and a first end of the rotor shaft, an output-end balance plate integrally connected to a second end of the lamination stack and a second end of the rotor shaft, an oil supply coupled to the output-end balance plate and the rotor shaft. A closed-looped coolant pathway is formed between the transmission, the rotor shaft, the encoder-end balance plate, the lamination stack, and the output-end balance plate.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: April 11, 2023
    Assignee: Dana Belgium N.V.
    Inventors: Shawn P.A. Jackson, Steven Vanhee
  • Patent number: 11606017
    Abstract: An armature is presented. The armature includes an armature winding having a plurality of coils, wherein each coil of the plurality of coils is spaced apart from adjacent coils and comprise includes a first side portion and a second side portion. The armature further includes a first electrically insulating winding enclosure. Furthermore, the armature includes a second electrically insulating winding enclosure disposed at a radial distance from the first electrically insulating winding enclosure, wherein the armature winding is disposed between the first electrically insulating winding enclosure and the second electrically insulating winding enclosure. Moreover, the armature includes an electrically insulating coil side separator disposed between the first side portion and the second side portion of the plurality of coils of the armature winding. A superconducting generator including the armature and a wind turbine having such superconducting generator are also presented.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: March 14, 2023
    Assignee: General Electric Company
    Inventors: David Allan Torrey, Wei Zhang, Mark Ernest Vermilyea, James William Bray, Siddharth Navinchandra Ashar, Hendrik Pieter Jacobus de Bock, Weijun Yin, Alexander Kagan, Anoop Jassal, Joseph John Zierer, Rammohan Rao Kalluri
  • Patent number: 11605995
    Abstract: A stator is described herein comprising a first longitudinally extending slot having a cavity defined by a first inwardly facing longitudinal surface and a second inwardly facing longitudinal surface; said stator further comprising a spacer provided in said cavity of said first slot, said spacer comprising a first spacer component that comprises a first sheet of material having a first sheet surface facing inwardly into said slot and an opposite sheet surface that is in contact with and extends along the first longitudinally extending inner surface of said slot and wherein said inwardly facing first sheet surface of said first spacer component comprises at least one ridge projection extending along its length L. Methods for assembling such stators are also described.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: March 14, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Parminder Singh Sangha, Edward Graham Charles Pocock, Michael Dawson
  • Patent number: 11606006
    Abstract: A system for overcooling a drive motor and a method for controlling the same may include a first cooling loop in which a first coolant circulate, the first coolant being in a heat exchange with a power electronics (PE) part and a drive motor cooler mounted in the first cooling line and configured to cool cooling oil supplied to the drive motor fluidically connected to the drive motor cooler; a second cooling loop disposed independently from the first cooling loop, wherein a second coolant circulates in the second cooling loop, the second coolant being in a heat exchange with a battery module and a battery chiller mounted in the second cooling loop; and a switch unit configured to selectively shift a flow path of the second coolant such that the second coolant is in a heat exchange with the drive motor cooler.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 14, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Byoung Hoon Choi, Sung Hyun Ahn, Hee Ra Lee, Jong Hyun Kim
  • Patent number: 11552518
    Abstract: The present disclosure relates to armature segments for an armature for an electrical machine. An armature segment may comprise a plurality of coils and an electrically insulating supporting structure providing structural support to the plurality of coils. An armature may comprise a plurality of armature segments. The present disclosure further relates to methods for assembling such armature segments and armature.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: January 10, 2023
    Assignee: General Electric Renovables Espana, S.L.
    Inventors: Andrew Thomas Cross, David Torrey, Michel Schweitzer, Bruno Crepel, Mickael Portets, Roel Schuring
  • Patent number: 11532972
    Abstract: A driving device includes an electric motor, a rotating shaft, a motor housing, a printed circuit board, an electric power converting circuit, a rear frame end working as a heat radiating member, gel working as a heat transfer member, multiple mounted parts and so on. The heat radiating member is located on a side of the printed circuit board and facing a motor-side surface of the printed circuit board, to which multiple switching elements are mounted. The gel is plastically deformed and adhered to the switching elements and the heat radiating member for transferring heat of the switching elements to the heat radiating member. At least one of the mounted parts is mounted to the printed circuit board and located at a position between a through-hole opposing area and one of the switching elements, which is located at a position closest to a rotational angle sensor mounted to the printed circuit board in the through-hole opposing area.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 20, 2022
    Assignee: DENSO CORPORATION
    Inventors: Yoshimichi Hara, Hiroyasu Sugiura
  • Patent number: 11502590
    Abstract: A radial-gap type superconducting synchronous machine 1 is prepared which includes a rotor 20 having, on its peripheral side, a convex magnetic pole 21 which includes, at its distal end part, bulk superconductors 30. When viewed in the direction of the rotational axis C1 of the rotor 20, the magnetic pole center side of the bulk superconductors 30 is disposed nearer to a stator 10 than the magnetic pole end side of the bulk superconductors 30. A ferromagnet 28 is disposed on the rotational axis C1 side of the bulk superconductors 30. A magnetizing apparatus 100 is disposed outside the bulk superconductors 30 in the radial direction of the rotor 20. Magnetization of the bulk superconductors 30 is performed by directing magnetic flux lines from the magnetizing apparatus 100 toward the bulk superconductors 30.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: November 15, 2022
    Assignee: National University Corporation Tokyo University Of Marine Science And Technology
    Inventors: Mitsuru Izumi, Motohiro Miki
  • Patent number: 11502579
    Abstract: A motor unit includes a motor including a rotor, a stator radially outside of the rotor; a housing for housing the motor; an oil passage for circulating the oil in the housing space; and a gear portion connected to a shaft of the rotor. The housing includes a motor housing portion defining a motor chamber in an interior, a gear housing portion defining a gear chamber in an interior, and a partition dividing the gear chamber and the motor chamber. The oil passage includes a flow passage arranged in an interior of the housing, and an oil feeding structure on an upper side of the motor to feed the oil to at least one of a stator core or coil ends. The flow passage includes a portion extending along an axial direction to feed the oil to the oil feeding structure. The partition includes the portion of the flow passage.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: November 15, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Shuhei Nakamatsu
  • Patent number: 11491322
    Abstract: A catheter pump system is disclosed. The catheter pump system can include a shaft assembly and an impeller coupled with a distal portion of the shaft assembly. The catheter pump system can include a motor assembly, the motor assembly comprising a chamber and a shaft-driving portion disposed in the chamber. The shaft-driving portion can be configured to impart rotation to the impeller through the shaft assembly. The chamber can be filled with a gas that at least partially surrounds the shaft-driving portion. A fluid pathway can convey fluid proximally during operation of the catheter pump system. A bypass pathway can be in fluid communication with the fluid pathway, the bypass pathway configured to direct at least a portion of the fluid to bypass the chamber.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: November 8, 2022
    Assignee: TC1 LLC
    Inventors: Paul F. Muller, Keif M. Fitzgerald, Michael R. Butler, Todd Jenkins
  • Patent number: 11486378
    Abstract: An electric compressor includes a housing, an inverter, an inverter case, a case bottom wall, and a case peripheral wall. The inverter case has a seal peripheral wall. The seal peripheral wall has a cylindrical shape and extends from the case bottom wall in a direction opposite to a direction in which the case peripheral wall extends. The seal peripheral wall surrounds a part of an outer peripheral surface of the housing. A seal member having an annular shape seals a gap between an inner peripheral surface of the seal peripheral wall and the outer peripheral surface of the housing.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: November 1, 2022
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takeshi Okochi, Junya Yano, Yusuke Kinoshita, Shumpei Yamakage
  • Patent number: 11476733
    Abstract: A rotary electric machine for use with coolant includes a stator and rotor assembly. The rotor assembly includes a rotor, rotor shaft, and first and second end rings. The rotor has inner and outer diameter surfaces and an embedded set of rotor magnets proximate the outer diameter surface. The shaft is connected to the rotor and defines a main coolant passage along an axis of rotation. Radial shaft coolant passages are in fluid communication with the main coolant passage. The end rings are positioned at opposing distal ends of the rotor. The shaft coolant passages direct the coolant into the rotor and/or the end rings such that the coolant flows axially through rotor cavities of the rotor and cools the rotor magnets via forced convection.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: October 18, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Farzad Samie, Alireza Fatemi, Derek F. Lahr, Erik B. Golm, Xiaofeng Yang
  • Patent number: 11469644
    Abstract: A multipart rotor shaft for an electric machine comprises a first shaft journal with a first end flange and a first axial passage bore, a second shaft journal with a second end flange. The rotor shaft also includes a hollow carrier for a laminated rotor core, a line element for conducting a cooling medium, and a separating element which divides a cavity between the carrier and the line element into a first partial cavity and a second partial cavity.
    Type: Grant
    Filed: February 19, 2020
    Date of Patent: October 11, 2022
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventor: Holger Fröhlich
  • Patent number: 11462970
    Abstract: The present invention provides a cooling mechanism between a linear motor rotor and a platform coupled thereto, characterized essentially in that a cooling portion is provided between the rotor and the platform, and further in that heat transfer is blocked between the cooling portion and the platform, thereby preventing heat received by the cooling portion during heat dissipation from being transferred to the platform, so as to ensure the precision of the platform.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 4, 2022
    Assignee: HIWIN MIKROSYSTEM CORP.
    Inventors: Min-Chang Huang, Cheng-Te Chi, Chao-Chin Teng
  • Patent number: 11462958
    Abstract: An electric motor cooling system is provided that utilizes stator-integrated axial coolant channels and a coolant manifold centrally located within the stator to efficiently remove motor assembly heat. The coolant manifold includes a middle member that allows coolant to enter the axial coolant channels via transition laminations, where the transition laminations include coolant distribution channels that direct the flow of coolant entering into the manifold into the stator-integrated axial coolant channels.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: October 4, 2022
    Assignee: Atieva, Inc.
    Inventors: Emad Dlala, Jeremy Mayer, Barnaby James Gerard Lewis, Mohammad Mahmoudi
  • Patent number: 11444513
    Abstract: An electric motor including a rotor, a stator, a motor housing having a controller can, and a controller having an electronic component disposed within the controller can. The controller can includes an insert comprising thermally conductive metal for exchanging heat with an external heat sink space.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: September 13, 2022
    Assignee: Nidec Motor Corporation
    Inventors: Steven R. Palmer, Richard L. Eason
  • Patent number: 11424669
    Abstract: A rotor (1) for an electric machine (21) with a central rotor axis (A) is specified. The rotor comprises—at least one superconducting coil element (3) with a local winding axis (a), and—at least one winding carrier (5) into which the coil element (3) is embedded, —wherein a cohesive connection is formed between the winding carrier (5) and the coil element (3), —wherein the cohesive connection is provided on a connecting surface (11c) which forms only a first partial region of the entire contact surface (11a, 11b, 11c) between coil element (3) and winding carrier (5). Also specified are a machine with a rotor (1) of said type and a production method for a rotor (1) of said type.
    Type: Grant
    Filed: April 8, 2019
    Date of Patent: August 23, 2022
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Christian Weidermann, Johannes Richter
  • Patent number: 11413623
    Abstract: A paper shredder motor cooling assembly having a paper shredder motor coupled to a fan shaft, an enclosure surrounding the paper shredder motor and having selected input and selected output vents to control airflow to the paper shredder motor, a fan coupled to the fan shaft, communicating with the selected input vents or the selected output vents; when the paper shredder motor is operating, the rotor shaft turns the fan to generate a differential air pressure between the selected input vents and the selected output vents, removing heat from the motor. A duty cycle of greater than 15 minutes is obtained. The fan can be coupled to the motor by speed increasing gearing, attached to the cutter blade assembly, such that the fan turns faster than the motor. The fan also can be attached to the motor shaft. An input fan and an output fan can be used.
    Type: Grant
    Filed: June 25, 2018
    Date of Patent: August 16, 2022
    Assignee: Aurora Office Equipment Co., Ltd. Shanghai
    Inventors: Kiapin Li, Zhankai Yang, Yung Kang Tso, Bin Zhang
  • Patent number: 11418080
    Abstract: A rotary electric machine includes a rotor having a rotor core, an end plate disposed on a rotor core end surface, and a stator including a stator core disposed at a gap from the rotor, and a coil provided to the stator core. The stator core includes a stator yoke portion having a substantially annular shape, stator teeth portions provided along a circumferential direction and protruding radially from the stator yoke portion, and slot portions formed between adjacent stator teeth portions. The coil is inserted into each slot portion of the stator core and includes a coil end portion protruding in an axial direction from a stator core end surface. A refrigerant is discharged radially outward of the rotor. A refrigerant guide unit for guiding the refrigerant discharged radially outward in a protruding direction of the coil end portion is disposed on the stator core end surface.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: August 16, 2022
    Assignee: HONDA MOTOR CO., LTD.
    Inventor: Takahiro Tsutsui
  • Patent number: 11381130
    Abstract: An electric motor includes: a housing having a first rotor bearing and a stator support surface; a cantilever stator that includes a lamination stack, a first side of the lamination stack abutting the stator support surface and a second side of the lamination stack abutting a stator endbell that has a second rotor bearing, wherein the cantilever stator is held by way of tie rods attaching the stator endbell to the housing; and a rotor in the cantilever stator, the rotor held by the first and second rotor bearings.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: July 5, 2022
    Assignee: Tesla, Inc.
    Inventors: Edwin M. Pearce, Jr., Jim Robbins, Scott Heines, David F. Nelson, Gary A. Pinkley, Michael Balsamo, Augusto E. Barton
  • Patent number: 11377137
    Abstract: The device has motor housing side annular engagement portion 40 formed at outer circumferential surface of end surface portion of motor housing 11 which is opposite side to output shaft portion of rotation shaft of electric motor; and metal cover side annular engagement portion 38 formed at opening end 37 of metal cover 12 that covers electronic control unit and engaged with motor housing side annular engagement portion 40. Fixing region is formed by fixing metal cover side annular engagement portion 38 to motor housing side annular engagement portion 40 in a fixing manner without using any fixing screw in a state in which metal cover side annular engagement portion 38 is engaged with motor housing side annular engagement portion 40. Sealing region is formed between fixing region and opening end 37 of the metal cover 12 with liquid sealant 41 applied between fixing region and opening end 37.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: July 5, 2022
    Assignee: HITACHI ASTEMO, LTD.
    Inventors: Hideyuki Hara, Haruaki Motoda, Kazuhiko Nakano, Katsumasa Hagiwara, Tetsuro Tateyama
  • Patent number: 11370476
    Abstract: A drive device includes a motor, a control board, a connector located between the motor and the control board in a predetermined direction, and a solder connecting a motor wire and the control board. The control board has a through-hole opening on an upper side and on a lower side. The connector includes a support portion that protrudes toward the control board such that a tip surface of the support portion is in contact with the lower side of the control board, a guide portion that has a guide hole through which the motor wire passes, the guide hole opening on a lower side and on an upper side. The upper side of the connector is spaced from the lower side of the control board in the predetermined direction. A fillet of the solder is formed on both the upper side and the lower side of the control board.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: June 28, 2022
    Assignee: DENSO CORPORATION
    Inventors: Daiki Itou, Naohiro Yamamoto
  • Patent number: 11316406
    Abstract: A rotor of an electrical rotating machine having poles formed from stacks of magnetic plates and electrical conductors wound around each pole. The rotor includes cooling fins extending in prolongation of the poles along the axis of rotation of the rotor.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: April 26, 2022
    Assignee: MOTEURS LEROY-SOMER
    Inventors: Vit Zahradsky, Matthieu Boirlaud
  • Patent number: 11303194
    Abstract: A cryogen-free partially-superconducting electric machine of the wound field synchronous type includes a room temperature semi-slotless stator, a superconducting motor rotor, a gap between the rotor and stator, a torque tube which isolates the cryogenic superconducting motor rotor from a central shaft, bearings, an acoustic cryocooler integrated within the motor rotor and torque tube, a heat exchange, a rotary transformer, a vacuum pump, a vacuum enclosure integrated with the stator, and an eddy current/thermal shield. The electric machine can act as a motor or a generator and produces a high specific power and efficiency.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: April 12, 2022
    Assignee: United States of America as Represented by the Administrator of National Aeronautics and Space Administration
    Inventors: Ralph H. Jansen, Peter E. Kascak, Rodger W. Dyson
  • Patent number: 11241935
    Abstract: An air-conditioning system comprises a channel system, a system conveying device positioned in the channel system and configured to convey air in the channel system, a sensor device comprising at least one analysis channel and configured to measure a characteristic of air flowing through the at least one analysis channel, and a suction jet pump comprising a motive-fluid inlet, a suction inlet, and a pump outlet. The system conveying device separates a suction area of the channel system arranged upstream of the system conveying device from a pressure area of the channel system arranged downstream from the system conveying device, and the sensor device further comprises a sensor outlet configured to release air from the sensor device. The motive-fluid inlet is fluidically connected to the pressure area via a suction jet branch-off point within the channel system, and the suction inlet is fluidically connected to the sensor outlet.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: February 8, 2022
    Inventors: Daniel Eberle, Rainer Knoeller, Markus Michael, Anja Reiter, Oliver Schultze, Isabelle Seitz, Joachim Treier, Walter Wolf
  • Patent number: 11239712
    Abstract: A stator for an electrical machine, in particular for an electromotive drive machine for an electric or hybrid vehicle, includes a stator core stack with a stator yoke and a number of radial stator teeth, as well as a corresponding number of stator slots, arranged between the stator teeth, for receiving a stator winding. A cooling apparatus has a number of cooling channels, each of which runs axially in one of the stator slots.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: February 1, 2022
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Julian Blum, Victor Heffner, Andreas Huber, Markus Lang, Martin Lasch, Manfred Siegling, Holger Ulbrich
  • Patent number: 11190076
    Abstract: A motor according to the present invention includes: a stator having a stator core and a coil; a rotor having a rotary shaft and a rotation body; a shaft bearing rotatably supporting the rotor; and a molding resin covering the stator. The motor has a coil end that is the coil protruding from the stator core in a shaft center X direction, and has a non-combustible layer provided to cover the coil end. The non-combustible layer is a metallic cover made of, for example, metal. The metallic cover is disposed to cover a periphery of a coil assembly in which the coil is formed on the stator core through an insulator. The metallic cover is integrated with the coil assembly by a molding resin.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: November 30, 2021
    Assignee: PANASONIC INTELIECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takanori Amaya, Akihiko Watanabe, Yoshikazu Yamagata, Yasuo Nanbu, Hisaaki Kato, Yasunori Wakamori
  • Patent number: 11183901
    Abstract: A cooling system simultaneously cools both a power module and a vehicle motor. A vehicle motor housing is provided in thermal communication with a plurality of manifolds. Each manifold defines a cooling fluid inlet, a cooling fluid outlet, and a distribution recess providing fluid communication. The distribution recess may be defined by a wall having an exterior major surface in thermal communication with the vehicle motor. A manifold fluid insert may be disposed within the distribution recess, defining a plurality of inlet branch channels and outlet branch channels. A power module may be coupled to the manifold and a heat sink feature. A flow of coolant fluid is provided from each cooling fluid inlet, through the inlet branch channels of the manifold fluid insert for impingement with the heat sink feature, returning through the outlet branch channels and to the cooling fluid outlet of the respective manifold.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: November 23, 2021
    Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.
    Inventors: Feng Zhou, Ercan Mehmet Dede
  • Patent number: 11146144
    Abstract: An electric motor assembly includes a stator, a rotor, a motor housing, a rotatable shaft, a radial fan, and an air scoop. The motor housing at least partly houses the stator and rotor and presents an exterior motor surface. The rotatable shaft is associated with the rotor for rotational movement therewith, with the rotatable shaft extending along a rotational axis. The radial fan is mounted on the rotatable shaft exteriorly of the motor housing and is rotatable with the shaft to direct airflow in a radially outward direction. The air scoop extends radially outwardly relative to the radial fan and axially to receive radial airflow from the radial fan and turn the airflow axially to flow along the exterior motor surface. The air scoop includes spaced apart axially extending airflow vanes to guide the airflow as the airflow is turned axially.
    Type: Grant
    Filed: July 1, 2019
    Date of Patent: October 12, 2021
    Assignee: Nidec Motor Corporation
    Inventors: Richard L. Eason, Michael L. Largent, Steven R. Palmer, Jeffrey Scott Sherman, Richard A. Belley
  • Patent number: 11146133
    Abstract: An electric machine may include a rotor shaft that has a hollow region configured to receive a coolant. The hollow region is defined by an inner surface which has a slope that increases from a first inner diameter at a first end to a second inner diameter at a second end. Centrifugal force generated when rotating the rotor shaft causes the coolant to flow across the inner surface of the rotor shaft from the first end to the second end at a velocity depending at least in part on the slope of the inner surface of the rotor shaft. A method of cooling an electric machine includes injecting a coolant into a first end of the hollow region of the rotor shaft, rotating the rotor shaft at an operational rate of rotation, with the rotation generating centrifugal force that causes the coolant to flow from the first end to the second end, transferring heat from the rotor shaft to the coolant.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: October 12, 2021
    Assignee: General Electric Company
    Inventors: Pablo Gabriel Piazza Galarza, Fabian Isaza, Duane Howard Anstead
  • Patent number: 11121591
    Abstract: A hollow metal part is used as a pipe component for a refrigerant flow path of a rotating electrical machine adapted to cool a stator coil with a refrigerant. The rotating electrical machine includes a connection arm that couples the stator coil and a power supply terminal at a stator coil end portion of the stator coil, and an insulating hose that is coupled to the stator coil and the connection arm through a first hollow metal part in order to supply the refrigerant to the stator coil and the connection arm. The first hollow metal part is formed integrally by joining a part formed of stainless steel to a part made of oxygen-free copper.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: September 14, 2021
    Assignee: MITSUBISHI POWER, LTD.
    Inventors: Seijiro Muramatsu, Takuma Yamaguchi, Kenichi Hattori, Toru Muto, Yoichi Kotani, Chuanhong Fan
  • Patent number: 11111960
    Abstract: A motor includes a rotor rotatable about an axis, a housing defining a motor chamber receiving at least a portion of the rotor, and a bearing assembly rotatably supporting the rotor on the housing. The housing includes a pair of axially spaced apart endshields. The bearing assembly includes a bearing and lubricant collection structure associated with the bearing. The lubricant collection structure defines a collection chamber configured to collect lubricant from the motor chamber and direct the lubricant to the bearing.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: September 7, 2021
    Assignee: Nidec Motor Corporation
    Inventors: Thomas E. Kirkley, Jr., Lawrence J. Wittman, Andrew F. Poag
  • Patent number: 11069463
    Abstract: In one or more embodiments, a system for operation in a generator mode comprises a cryocooler to cool a superconducting coil. The system further comprises a flux pump to provide flux to the superconducting coil. Also, the system comprises a shaft of a prime mover to receive torque to rotate a rotor. In addition, the system comprises the superconducting coil to electrically interact with a main stator coil through a rotating magnetic field. Further, the system comprises a control stator coil to receive a current from a controller and to electrically interact with a non-superconducting coil. In one or more embodiments, a magnitude, phase, and/or frequency of rotating magnetic fields of the superconducting coil and the non-superconducting coil is varied in comparison to a magnitude, phase, and/or frequency of the magnetic field produced by the superconducting coil alone to control a magnitude, phase, and/or frequency of an output voltage.
    Type: Grant
    Filed: June 27, 2019
    Date of Patent: July 20, 2021
    Assignee: The Boeing Company
    Inventors: John R. Hull, Shengyi Liu
  • Patent number: 11056941
    Abstract: A rotor of the rotary electric machine includes a rotor core, and a plurality of permanent magnets disposed in an inner part or an outer circumferential surface of the rotor core in a circumferential direction. In the rotor core, one or more first flow passages through which a cooling liquid flows, the one or more first flow passages extending in an axial direction and communicating with the outside of the rotor, and one or more second flow passages extending radially outward from the first flow passage and having closed distal ends, are formed.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: July 6, 2021
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Takashi Matsumoto
  • Patent number: 11050325
    Abstract: Provided is a motor apparatus in which an increase in its size in a radial direction of a rotation shaft of a motor can be suppressed while securing redundancy of control of driving of the motor. A motor apparatus includes a motor having a rotation shaft, a first control circuit board where a first power circuit and a first control circuit are mounted, and a second control circuit board where a second power circuit and a second control circuit are mounted. The control circuit boards are arranged with an overlapping portion when viewed along an axial direction on an extension line of an axis of the rotation shaft. The overlapping portion intersects the extension line of the rotation shaft of the motor.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: June 29, 2021
    Assignee: JTEKT CORPORATION
    Inventor: Yuto Sato
  • Patent number: 11038411
    Abstract: The disclosure relates to a system having an electric machine with a superconductive component cooled using a cryogenic liquid, and in particular to the full utilization of the refrigeration power available from vaporization of the cryogenic coolant. The system also has a fuel cell, in which an operating medium may be reacted to provide electrical energy. The coolant is fed in liquid form to the superconductive component to cool the component, utilizing the vaporization enthalpy of the coolant. The coolant is then fed in gaseous form to a further component of the machine to cool the component, utilizing the heating enthalpy of the coolant. The now heated coolant is fed to the fuel cell, which uses the coolant supplied to the fuel cell as an operating medium and reacts it.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: June 15, 2021
    Assignee: Rolls-Royce Deutschland Ltd & Co KG
    Inventors: Michael Frank, Jörn Grundmann, Peter van Haßelt
  • Patent number: 11025138
    Abstract: An electric machine has a housing and has a stator inside the housing, surrounding a rotor arranged on a motor shaft so as to be fixed to the shaft. A rotary field winding, at the ends of the stator, forms a winding head. The winding heads are embedded in a thermally conductive encapsulation material, wherein the encapsulation material is in thermal contact with the housing along the outer circumference of the winding head. A segmented cooling plate is arranged on the inner circumference of the encapsulation winding head.
    Type: Grant
    Filed: July 10, 2018
    Date of Patent: June 1, 2021
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Julian Blum, Andreas Huber, Markus Lang, Joerg Merwerth, Angusto Guccione
  • Patent number: 11026346
    Abstract: A water-replenishing and gas-removing structure for water cooling device includes a flow-guiding main body having a water-receiving space as well as an inlet, an outlet, a first opening and a second opening, which are communicable with the water-receiving space. The first and the second valve member are located in the water-receiving space corresponding to the first and the second opening, respectively, for opening or closing them. The first and the second connecting member are connected at an end to the first and the second opening, respectively, and at another end to an external water-replenishing and an external gas-removing apparatus, respectively, via a pipe each. With these arrangements, cooling fluid can be replenished into and surplus gas can be removed from a water cooling device without the need of disassembling or reworking the water cooling device.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: June 1, 2021
    Inventor: Wen-Ji Lan
  • Patent number: 11018539
    Abstract: An electric machine for a drivetrain of a motor vehicle may comprise: a rotor with a rotor laminated core; a stator with winding heads on opposite end faces; and a housing with a a cooling liquid reservoir. The rotor core comprises multiple stacked laminations each with an aperture connecting the end faces to one another. The apertures of adjacent laminations are offset in a circumferential direction so: a first helical cooling channel connects an inner region of the core to a first end face; a second helical cooling channel connects the inner region of the core to a second end face; and the first cooling channel and the second cooling channel are oriented oppositely with respect to one another and are connected via a passage within the rotor laminated core to a feed line conducting the cooling liquid within the rotor shaft.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: May 25, 2021
    Assignee: VITESCO TECHNOLOGIES GMBH
    Inventors: Holger Fröhlich, David Charles, Sönke Gürtler
  • Patent number: 11018556
    Abstract: A generator includes a stator with a stator winding, a rotor with a field winding supported for rotation relative to the stator, and a housing enclosing the stator and the rotor. The housing has an independent system port that is connected to a shared system port by a selector. The selector fluidly couples the stator and one of the independent system port and the shared system port. The selector also fluidly separates the stator from the other of the independent system port and the shared system port. Generator arrangements and methods of making generators are also described.
    Type: Grant
    Filed: March 15, 2019
    Date of Patent: May 25, 2021
    Assignee: HAMILTON SUNSTRAND CORPORATION
    Inventor: Eric Alan Larson
  • Patent number: 11005326
    Abstract: An electric drive unit for powering a load, e.g., road wheels of a motor vehicle, includes a housing having a floor section separating the housing into upper and lower chambers. The floor section defines an elongated drain opening, drain holes, and an oil supply port in fluid communication with an oil pump. A rotary electric machine is enclosed within the lower chamber, and has electrical leads positioned directly below the drain opening. A cover assembly is fastened to the housing within the upper chamber, and has a coolant channel assembly integrally connected to a cover plate. The coolant channel assembly includes electrical terminals that project through the drain opening and are fastened at a first distal end of the electrical terminals to the electrical leads. The cover assembly defines a primary coolant channel in fluid communication with the oil supply port, and directs oil to the electrical terminals.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: May 11, 2021
    Assignee: GM Global Technology Operations LLC
    Inventors: Stephen G. Heien, John A. Diemer