Liquid Coolant Patents (Class 310/54)
  • Patent number: 11956933
    Abstract: No consideration is given to heat transferred from a semiconductor module to a capacitor via a bus bar module. The heat generated by a semiconductor module (1) is transferred to a bus bar module (3) via a DC terminal (1A) of the semiconductor module (1). As illustrated in FIG. 4(B), the heat transferred to the bus bar module 3 is then transferred to the pressing member 5 via the annular conductor 8 and the bolt 5A. Since the pressing member 5 is in close contact with the second cooler 2B, the heat transferred to the pressing member 5 is cooled by the second cooler 2B. On the other hand, the heat transferred to the convex portion 6A of the housing 6 is transferred to the first cooler 2A via the housing 6 and cooled. As a result, in the configuration in which a capacitor (4) is connected to the semiconductor module (1) via the bus bar module (3), the heat transferred from the semiconductor module (1) to the capacitor (4) can be suppressed.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 9, 2024
    Assignee: Hitachi Astemo, Ltd.
    Inventors: Takashi Hirao, Takeshi Tokuyama, Noriyuki Maekawa, Akira Matsushita, Toshiya Satoh
  • Patent number: 11942826
    Abstract: An example rotor assembly includes a rotor core having an axial length and configured to rotate about a longitudinal axis. The rotor core includes a first wall and a second wall radially within the first wall and defining a fluid flow path configured to guide a fluid along an inner surface of the first wall.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: March 26, 2024
    Assignee: Rolls-Royce Electrical Norway AS
    Inventor: Ken Flydalen
  • Patent number: 11938806
    Abstract: The invention is related to an integrated drive system including an electric motor having a stator and a rotor, an inverter configured to control the electric motor, a gearbox configured to transmit a torque provided by the electric motor, and a coolant system, wherein the coolant system includes a cooling fluid, configured to follow one cooling path for cooling the inverter, the rotor, the stator and the gearbox.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: March 26, 2024
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventors: Christian Finger-Albert, Alexander Frank
  • Patent number: 11942833
    Abstract: An intelligent power generation module includes a motor having a motor housing; a cooling water flow path; a first oil flow path extending along a circumferential direction of the motor housing such that oil flows through one end portion of the motor housing; a plurality of first injection nozzles being spaced apart from each other in a circumferential direction of the first oil flow path and configured to inject the oil into the motor housing; an oil injection housing mounted at the other end portion of the motor housing; a second oil flow path formed along a circumferential direction of the oil injection housing such that oil flows inside the housing for oil injection; and a plurality of second injection nozzles being spaced apart from each other in a circumferential direction of the second oil flow path and configured to inject the oil into the motor housing.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: March 26, 2024
    Assignees: LG Magna e-Powertrain Co., Ltd., AVL SOFTWARE AND FUNCTIONS GMBH
    Inventors: Hanbyul Kang, Kyunghoon Lee, Robert Poschl, Gernot Fuckar, Markus Preuss, Florian Bodensteiner, Deukhyun Hwang
  • Patent number: 11923754
    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: January 18, 2023
    Date of Patent: March 5, 2024
    Assignee: DANA BELGIUM N.V.
    Inventors: Shawn P. A. Jackson, Steven Vanhee
  • Patent number: 11894751
    Abstract: A housing of a drive device includes a refrigerant flow path through which a refrigerant flows. The refrigerant flow path includes a first flow path, a second flow path, a third flow path, and a fourth flow path. The refrigerant to be sent from a pump flows through the first flow path. The refrigerant to be supplied to the motor portion flows in the second flow path. The third flow path supplies a part of the refrigerant flowing through the second flow path to the outer surface of a stator. The fourth flow path supplies the other part of the refrigerant flowing through the second flow path to a hollow portion of a shaft. A minimum flow-path cross-sectional area in the fourth flow path is smaller than a minimum flow-path cross-sectional area in the third flow path.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: February 6, 2024
    Assignee: NIDEC CORPORATION
    Inventors: Keisuke Nakata, Yuki Ishikawa, Kouhei Oba
  • Patent number: 11876405
    Abstract: A stator of an electric motor includes a stator core including a rim and a plurality of stator teeth extending from the rim. The plurality of stator teeth define a plurality of tooth gaps between circumferentially adjacent stator teeth. A plurality of stator windings are wrapped along the plurality of stator teeth. The plurality of stator windings include a plurality of core segments extending along the plurality of tooth gaps, and a plurality of end turn segments connecting adjacent core segments. A plurality of non-electrically conductive cooling channels are located in the stator core. The plurality of cooling channels are configured to direct a cooling fluid flow therethrough to cool the plurality of stator windings.
    Type: Grant
    Filed: January 14, 2020
    Date of Patent: January 16, 2024
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventors: Kimberly Rae Saviers, Ram Ranjan, Jagadeesh Kumar Tangudu
  • Patent number: 11870311
    Abstract: A conductive coil for an electric application having a cooling channel for a coolant liquid or gas. The coil includes a wire winding of a plurality of wire turns. The wire winding is compressed about a cooling channel which is disposed between adjacent turn segments of the plurality of wire turns. The wire winding is formed and pressed against a shaping element to form the coolant channel within the compressed winding.
    Type: Grant
    Filed: January 25, 2021
    Date of Patent: January 9, 2024
    Assignee: ILLINOIS INSTITUTE OF TECHNOLOGY
    Inventor: Ian Patrick Brown
  • Patent number: 11863051
    Abstract: A thermal management system including a fluid flow mechanism. The fluid flow mechanism includes an electric machine. A conduit is formed through the electric machine allowing a heat transfer fluid to flow therethrough. The fluid flow mechanism includes a flow device configured to provide a first portion of the heat transfer fluid to a first heat exchange circuit and a second portion of heat transfer fluid to a second heat exchange circuit. The conduit is in fluid communication with the second heat exchange circuit.
    Type: Grant
    Filed: May 13, 2021
    Date of Patent: January 2, 2024
    Assignee: General Electric Company
    Inventor: Kevin Edward Hinderliter
  • Patent number: 11855511
    Abstract: A wind power generation unit, an electric motor, and an airflow delivery for an electric motor air gap are provided. The airflow delivery device for the electric motor air gap comprises an annular air distribution chamber, wherein the annular air distribution chamber is located at at least one end of the air gap, and the annular air distribution chamber has a delivery port facing the air gap so as to deliver a hot or cold airflow to the air gap. The annular air distribution chamber is arranged at an end part of the air gap, the required airflow is introduced into the annular air distribution chamber, and the annular air distribution chamber can output the accumulated airflow to the air gap, facilitating the airflow in flowing smoothly through the air gap, such that the flow of the air gap is relatively easy to control.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: December 26, 2023
    Assignee: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.
    Inventor: Shengjun Ma
  • Patent number: 11843281
    Abstract: A vehicle electric machine includes a housing and a stator having windings and a stator core. The core defines a plurality of axially extending cooling channels each having an entrance port at one end of the stator and an exit port at the other end of the stator. An end cover is connected to a first end of the housing defining a recessed cavity configured to receive the windings and defines an arcuate inlet manifold channel that extends in a circumferential direction of the stator to partially circumscribe the first cavity and that is in fluid communication with first ones of the axial cooling channels.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: December 12, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Franco Leonardi, Michael W. Degner
  • Patent number: 11843309
    Abstract: An oil recovery structure for cooling a motor includes a rotor connected to a rotary shaft, a stator disposed on the rotor, a housing surrounding the rotor and the stator, and an oil housing disposed on the housing, in which the oil housing includes a first inlet through which the oil is introduced from a space defined on one side of the rotor, a second inlet through which the oil is introduced from a reducer connected to the rotary shaft, and a discharging port discharging the oil inside the oil housing to an oil filter.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: December 12, 2023
    Assignees: Hyundai Motor Company, Kia Corporation
    Inventors: Shin Jong Kim, Jong Hyun Kim
  • Patent number: 11843305
    Abstract: An apparatus includes a housing configured to receive at least a portion of an electric motor. The apparatus also includes a manifold disposed on an upper surface of the housing. The manifold includes a number of vertical jets configured to target one or more portions of the electric motor, the vertical jets includes multiple vias extending between (i) a cavity within the manifold and (ii) an interior portion of the housing. The cavity within the manifold is defined by (i) at least a portion of the upper surface of the housing, (ii) one or more side walls extending from the upper surface of the housing, and (iii) a cover lid coupled to the one or more side walls and configured to cover the cavity and the vias.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: December 12, 2023
    Assignee: Canoo Technologies Inc.
    Inventors: John Mason, Charles Garmel, Samuel Anson Jantzi, Saul Guzman Carranza, Jackson George Diebel, Garrett Thomas Allen, Evan J. Filter
  • Patent number: 11837940
    Abstract: A transmission mechanism device includes a transmission mechanism including a hollow shaft, and a bearing supporting an outer face of the shaft. A holder holding the bearing is on the inner face of a housing of the transmission mechanism. The holder has a facing face facing an end of the shaft, a tubular portion holding the bearing and protruding in the axial direction radially from the facing face, and a rib inside the tubular portion and protruding in the axial direction from the facing face. The rib extends in a concave shape opening upward. A lower end of an inner face of the rib is below an upper end of an inner face of the shaft when viewed from the axial direction. At least one end of the rib in an extending direction faces an inner face of the tubular portion via a gap when viewed from the axial direction.
    Type: Grant
    Filed: March 3, 2022
    Date of Patent: December 5, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Keisuke Nakata, Yuki Ishikawa
  • Patent number: 11837939
    Abstract: An electric machine includes a housing, a stator, an oil film, and at least one first seal. The housing has an internal surface defining an internal cavity. The stator has an outer peripheral surface and is disposed within the internal cavity such that a clearance gap is defined between an outer peripheral surface and the internal surface. The oil film is disposed within the clearance gap and is in contact with the internal surface and the outer peripheral surface. The at least one first seal is disposed along a first end of the stator and is configured to retain the oil film within the clearance gap along the first end of the stator.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: December 5, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Franco Leonardi, Prasad Dev Hanumalagutti, Michael W. Degner
  • Patent number: 11804750
    Abstract: The motor includes a sealing material (dry body of a liquid gasket 41) interposed between a joint surface 3b of a motor housing 3 and a joint surface of an inverter housing, and an O-ring 39. The O-ring 39 is interposed between the motor housing 3 and the inverter housing and disposed so as to surround the communication port 3a1 of the refrigerant flow path 3a. The motor housing 3 includes a groove 3d disposed between the sealing material and the O-ring 39 on the joint surface 3b in a surface direction of the joint surface 3b.
    Type: Grant
    Filed: March 9, 2021
    Date of Patent: October 31, 2023
    Assignee: MEIDENSHA CORPORATION
    Inventor: Hiromichi Akiyama
  • Patent number: 11764651
    Abstract: An electrical sub-assembly comprises a stator having a plurality of coils and cooling means attached to the stator. The electrical sub-assembly further comprises a plurality of pairs of diodes attached to the cooling means, each pair of diodes being in antiparallel configuration and having three electrical terminals. One of the three electrical terminals is a common terminal shared by both diodes in each pair of diodes in each pair of diodes. A plurality of busbars electrically connect each of the diodes to at least one of the plurality of coils via one or more of the electrical terminals. In use, the cooling means is configured to simultaneously cool the stator and the plurality of diodes. The electrical sub-assembly may have particular application as a part of a switched reluctance machine.
    Type: Grant
    Filed: April 26, 2021
    Date of Patent: September 19, 2023
    Assignee: Advanced Electric Machines Group Limited
    Inventors: James Dumesnil Widmer, Richard Martin, Barrie Charles Mecrow
  • Patent number: 11760189
    Abstract: Electric drive (100, 200, 300, 400) for a vehicle, comprising: at least one hollow shaft (101, 201, 301, 401) mounted for rotation about an axis of rotation; at least one rotor unit (102, 202) being arranged rotationally fixed with the hollow shaft (101, 201, 301, 401); at least one coolant circuit being provided at least partially between the hollow shaft (101, 201, 301, 401) and the rotor unit (102, 202); the coolant circuit comprising at least one cooling section (105, 205) being provided adjacent to the rotor unit (102, 202); and wherein the cooling section (105, 205) has an increasing radius at least partially along its extension parallel to the axis of rotation.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: September 19, 2023
    Assignee: VOLVO CAR CORPORATION
    Inventors: Joakim Ehn, Håkan Sandström
  • Patent number: 11757325
    Abstract: A motor device includes a motor case, an inverter case, a motor, an inverter, and a terminal block. The inverter case is attached to the motor case. The motor is disposed in the motor case. The inverter is disposed in the inverter case. The terminal block is disposed in the inverter case and has a terminal block channel. The terminal block is coupled to an energizing member that extends from the motor. The terminal block channel is configured to guide a coolant.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: September 12, 2023
    Assignee: SUBARU CORPORATION
    Inventors: Hiroki Morika, Yutaka Iino, Yasufumi Tanaka, Hayata Mimatsu
  • Patent number: 11739619
    Abstract: An electric submersible pump (ESP) electric motor. The ESP electric motor comprises a housing; a stator retained within the housing; a drive shaft; and an at least one rotor mechanically coupled to the drive shaft and located concentric with and inside of the stator, wherein an inside surface of the stator defines a groove extending from an upper end to a lower end of the stator, an outside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, an inside surface of the at least one rotor defines a groove extending from an upper end to a lower end of the at least one rotor, or an outside surface of the drive shaft defines a groove extending from below an male splines at an upper end to a lower end of the drive shaft.
    Type: Grant
    Filed: November 19, 2021
    Date of Patent: August 29, 2023
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Ketankumar Kantilal Sheth, Donn J. Brown, Dezhi Zheng, Robert Charles De Long
  • Patent number: 11722029
    Abstract: To provide a rotary electric machine which is improved in cooling performance. The rotary electric machine includes a rotor; and a stator which, being disposed opposite the rotor, has a stator core having a plurality of slots therein and a stator winding wound in the plurality of slots, wherein the stator has a plurality of coil ends which are formed protruding from an axial end face of the stator core and between adjacent ones of which is provided a radial clearance passing through from the inner diameter side to the outer diameter side, and wherein the stator includes a bus bar which, being disposed on the inner diameter side of the plurality of coil ends so as to occlude the clearances between the plurality of coil ends, guides a refrigerant, which is supplied from the radial direction of the stator, to the plurality of coil ends.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: August 8, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Kohei Egashira, Kazuya Hasegawa, Tatsuro Hino
  • Patent number: 11708843
    Abstract: An electric coolant pump (1) conveys cooling fluid in order to cool a combustion engine of a vehicle. The electric coolant pump (1) has a pump impeller (2) for accelerating the coolant to be conveyed, a rotor shaft (3) on which the pump impeller (2) is fixed, an electric motor (6), having a stator (8) and a rotor (7), for driving the rotor shaft (3). A control circuit (13) controls the electric motor (6). A pump housing (10) accommodates at least the control circuit (13) and the electric motor (6). The coolant to be conveyed is able to flow through the pump housing (10). The coolant to be conveyed thereby flows around the stator (8), the rotor (6) and the control circuit (13).
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: July 25, 2023
    Assignee: NIDEC GPM GMBH
    Inventors: Conrad Nickel, Franz Pawellek, Jens Hoffmann
  • Patent number: 11699939
    Abstract: An electric machine (10) includes a housing (12), a stator (20) fixed within the housing (12), a rotor (30) with a rotor shaft (32), an air gap (24) formed between the rotor (30) and the stator (20), and a cooling device (14) configured for liquid cooling of the electric machine (10). The rotor shaft (32) defines an axial bore (36) in an axial direction, which extends at least partially into the rotor (30). The rotor (30) defines a radially extending air duct (40), which extends from an inner side (42) contacting the rotor shaft (30) to an outer side (44) facing the air gap (24). The rotor shaft (32) defines a bore (46), which is aligned with the air duct (40) such that air is flowable out of the rotor shaft (32) into the air gap (24).
    Type: Grant
    Filed: November 11, 2021
    Date of Patent: July 11, 2023
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventor: Ulrich Kehr
  • Patent number: 11664706
    Abstract: A rotary electric machine unit includes a rotary electric machine, where a protruding portion extending in an axial direction from a one end side cover portion toward the rotary electric machine is formed at a position below a rotation axis of the rotary electric machine and overlapping with the rotary electric machine. A refrigerant flow lower surface formed on a tip end side of the protruding portion and extending in the axial direction, and a recessed surface adjacent to a base side end portion of the refrigerant flow lower surface and extending in the axial direction at a position recessed upward than the refrigerant flow lower surface are formed below a center of the protruding portion in the upper-lower direction. The refrigerant flow lower surface of the protruding portion is arranged such that an axial central portion overlaps the rotary electric machine in the axial direction.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: May 30, 2023
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Tadashi Yamaguchi, Akio Tsumasaka
  • Patent number: 11658541
    Abstract: An unenclosed electric traction machine has a stator built up from a stator laminated core, and a rotor shaft with a rotor, mounted on the latter, built up from a rotor laminated core, wherein the stator laminated core is arranged between two outer pressing plates, and at least one bearing shield, which in each case has a bearing for the rotor shaft. Along a section of the periphery of the stator laminated core, and spaced apart from the stator laminated core, at least one cover, designed as a tension bar between the pressing plates, is arranged between the pressing plates so as to form at least one cooling box, with a base on the surface of the stator laminated core, wherein the at least one intermediate space between the base and the at least one cover of the cooling box is designed for the routing of a cooling fluid.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: May 23, 2023
    Assignee: TRAKTIONSSYSTEME AUSTRIA GMBH
    Inventors: Stefan Wild, Philipp Samstag
  • Patent number: 11632005
    Abstract: An electric motor with a stator that is formed of a plurality of distinct laminations. Each of the distinct laminations has a radially inner lamination edge, which borders a rotor aperture configured to receive a rotor therein, a radially outer lamination edge and a plurality of cooling apertures formed there through that are disposed radially between the radially inner and outer lamination edges. Each cooling aperture in a lamination forms part of a separate and distinct cooling channel that extends helically through the laminations about a rotational axis of the electric motor.
    Type: Grant
    Filed: December 21, 2020
    Date of Patent: April 18, 2023
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Jeffrey J. Ronning, John C. Morgante
  • Patent number: 11626781
    Abstract: A capacitive coupler provides high coupling capacitance through the use of an electrical double layer formed on opposite plates of the coupler. The coupler can be independent or provide a hydrodynamic or hydrostatic bearing as well as capacitive coupling and the circulated dielectric can provide for cooling of associated machinery.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: April 11, 2023
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Daniel Ludois, Kevin Frankforter
  • Patent number: 11626765
    Abstract: A motor drive assembly having an electric motor with a rotor that includes a rotor shaft and a heat exchanger received in the rotor shaft. The heat exchanger has an insert body with an outer insert surface that is engaged to an inside surface of the rotor shaft. The insert body includes a plurality of segments. Each of the segments defines a first through-hole, and a plurality of second through-holes. Each of the segments is fixedly coupled to one another. A first flow passage extends through the first through-holes in the plurality of segments. Each of the second through-holes defines a portion of a corresponding second flow passage. The second flow passages are disposed concentrically about the first flow passage.
    Type: Grant
    Filed: August 8, 2018
    Date of Patent: April 11, 2023
    Assignee: American Axle & Manufacturing, Inc.
    Inventors: Jeffrey J. Ronning, James P. Downs, John Morgante, Peter D. Fischer, David Crecelius, Zugang Huang, Paul J. Valente
  • Patent number: 11588378
    Abstract: A liquid-cooled core assembly for a linear motor includes an iron-core having a middle part, teeth extending from two opposite sides of the middle part and forming slots therebetween, coils wound around the teeth, axial cooling-fluid passageways extending across the middle part, and cooling conduits mounted inside the passageways. The core assembly further includes a cooling arrangement having a liquid supply part and a liquid collection part mounted against respective two other opposite sides of the iron-core. The liquid supply and collection parts are in fluid communications with the cooling conduits. An inlet connector is in fluid communication with the liquid supply part, and an outlet connector is in fluid communication with the liquid collection part.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: February 21, 2023
    Assignee: ETEL S.A.
    Inventors: Jean-Yves Grillon, Jean Lefevre, Loïc Moreno
  • Patent number: 11581778
    Abstract: A motor and a rotating shaft cooling device thereof are disclosed. A rotating shaft of the motor is formed with an annular space. A shaft has a front end and a rear end. The shaft is a blind tube formed with a channel communicating with the annular space through a plurality of nozzles. The distance between the nozzles and the rear end is less than one-half of the length of the shaft. A cooling fluid flows through the nozzles to form a jet array to impinge on the inner wall of the rotating shaft to cool the rotating shaft, and flows back in the annular space to enhance the cooling effect, increase the heat exchange area, and improve the cooling effectiveness of the rotating shaft.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: February 14, 2023
    Assignee: National Cheng Kung University
    Inventors: Mi-Ching Tsai, Shyy-Woei Chang, Min-Fu Hsieh, Kai-Jung Shih, Wei-Ling Cai, Bi-Sheng Wei
  • Patent number: 11572182
    Abstract: An electric machine (101) for use in an aircraft is shown. The electric machine comprises a casing (104) containing electromechanical components, a shaft (106) which extends outside of the casing, a seal (107) to seal the casing around the shaft, and a depressurisation system (102) configured to depressurise the casing below an external pressure to prevent electrical breakdown within gas in the casing.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: February 7, 2023
    Assignee: ROLLS-ROYCE PLC
    Inventor: Ahmed My Razak
  • Patent number: 11575291
    Abstract: A motor, a powertrain, and a vehicle. The motor may be applied to an electric motor vehicle/electric vehicle, a pure electric vehicle, a hybrid electric vehicle, a range extended electric vehicle, a plug-in hybrid electric vehicle, a new energy vehicle, battery management, a motor & driver, a power converter, a reducer, or the like. The motor is configured to output power. In a process of outputting power by the motor, a blocking member arranged in the motor blocks the contact between a rotor of the motor and a coolant, so that the coolant does not splash under the centrifugal action of the rotor in the process of rotation, thereby avoiding the kinetic energy consumption of the rotor. Therefore, a rotating speed of the motor is faster, and the output power is greater.
    Type: Grant
    Filed: October 14, 2021
    Date of Patent: February 7, 2023
    Assignee: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
    Inventors: Jiangang Wang, Quanming Li, Jun Wen
  • Patent number: 11563350
    Abstract: A rotating electric machine wiring member is configured to connect coil ends of a stator and associated electrodes of a terminal block in a rotating electric machine. The rotating electric machine wiring member includes a plurality of electrical conducting wires, and a holding portion configured to hold the plurality of electrical conducting wires together. The holding portion includes a holder, which is provided to cover all respective peripheries of the plurality of electrical conducting wires in respective one parts in a longitudinal direction of the plurality of electrical conducting wires together, and a molded resin section made of a molded resin to cover one part of the holder. Exposed parts of the holder uncovered with the molded resin section are arranged to surround a peripheral edge of the molded resin section.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: January 24, 2023
    Assignee: HITACHI METALS, LTD.
    Inventors: Noriyuki Takahashi, Jun Umetsu
  • Patent number: 11552531
    Abstract: The invention relates to an electrical machine comprising a stator and a rotor that are disposed in a casing comprising a first face provided with ribs and intended to be in contact with a cooling fluid, the machine being provided with a closing structure which is fastened in a leaktight manner to the first face of the casing so as to delimit with the first face of the casing a space forming a circuit for the cooling fluid of the motor, the closing structure being fastened to the first face of the casing by welding and/or brazing and/or crimping and comprising at least one cover, characterized in that the closing structure is fastened to the casing by welding and/or brazing and/or crimping only at said ribs.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: January 10, 2023
    Assignee: L'Air Liquide, Societe Anonyme Pour L'Etude Et L'Exploitation Des Procedes Georges Claude
    Inventor: Fabien Durand
  • Patent number: 11539256
    Abstract: Various embodiments include stator for an electrical machine comprising: a stator winding; and a yoke with a plurality of slots. There are a plurality of conductor segments connected to one another, wherein each conductor segment has one respective axially internal inner section and two respective axially external outer sections. The respective inner section of each conductor segment is embedded into a respective slot. Ducts for coolant flow in the axial direction are formed at least in a portion of each of the slots. The stator defines, at least in a first axial end region, a first coolant chamber fluidically encapsulated from a surrounding area. The first coolant chamber surrounds at least a portion of the respective outer sections of each of the conductor segments situated in the first axial end region. The first coolant chamber is fluidically connected to the ducts to conduct coolant into and/or out of the ducts.
    Type: Grant
    Filed: March 16, 2018
    Date of Patent: December 27, 2022
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventors: Dirk Diehl, Markus Klöpzig, Heinz Schmidt, Andreas Schröter, Aristide Spagnolo, Markus Wilke
  • Patent number: 11527939
    Abstract: A cooling arrangement for an electric machine (1, 1a, 1b) includes a rotatably mounted rotor shaft (2). A rotatably mounted hollow shaft (11) is mounted coaxially to the rotor shaft (2) and rotationally fixed to the rotor shaft (2). A hollow shaft inner side (12) is spaced apart from a rotor shaft outer side (5) in a radial direction (R) in order to form an annular gap (14). At least one cooling duct for a cooling lubricant includes a hollow shaft duct (18), a feed duct (20), and an outlet duct (25). The feed duct (20) opens into the hollow shaft duct (18) in order to feed the cooling lubricant to the hollow shaft duct (18). The outlet duct (25) extends from the hollow shaft duct (18) to the annular gap (14) in order to release the cooling lubricant from the hollow shaft duct (18) into the annular gap (14).
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: December 13, 2022
    Assignee: ZF FRIEDRICHSHAFEN AG
    Inventors: Martin Lang, Thomas Auer, Sebastian Paulik, Harald Wendl, Gerhard Obermaier, Maria Lang
  • Patent number: 11518530
    Abstract: A propulsor (101) for an aircraft is shown. The propulsor comprises a propulsive fan (106), and an electric machine (108) configured to drive the propulsive fan. The electric machine has a casing containing electrical and electromechanical components, a shaft which extends outside of the casing and which is connected to the propulsive fan, and a seal to seal the casing around the shaft. A depressurisation system depressurises the casing below an external pressure to prevent electrical breakdown within gas in the casing of the electric machine.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: December 6, 2022
    Assignee: ROLLS-ROYCE plc
    Inventor: Ahmed M Y Razak
  • Patent number: 11522398
    Abstract: A supply end plate apparatus includes a supply end plate with an aperture therethrough configured to be mounted at a first axial end of the rotor core for supplying fluid to the rotor core. The supply end plate defines a plurality of end plate passages therein extending outward from an inward portion of the supply end plate toward an outward portion of the supply end plate. Each of the plurality of end plate passages includes: a radial section extending in a radial direction from an inlet in the inward portion of the supply end plate toward the outward portion; a transition section extending obliquely from the radial section; and a circumferential section extending circumferentially from the transition section to an outlet of the supply end plate.
    Type: Grant
    Filed: January 13, 2020
    Date of Patent: December 6, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventors: Eric Alan Larson, Brady A. Manogue
  • Patent number: 11515757
    Abstract: An improved liquid cooled apparatus for transferring large torques magnetically with a primary rotary member and a secondary rotary member as is set forth in U.S. Pat. No. 7,294,947. The primary rotary member has permanent magnets, the secondary rotary member with electro-conductive materials. Both of said rotors being encased in a liquid tight casing enclosure and said rotors both being liquid cooled to allow for power transfers in excess of 260 KW and 1000 ft.lb torque.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: November 29, 2022
    Assignee: Flux Drive, LLC
    Inventors: Philip Corbin, III, Richard Braun, Michael Troy Sparks
  • Patent number: 11515744
    Abstract: A stator housing for an electric machine, includes a cooling channel through which a cooling fluid may flow and which has a plurality of main portions extending in the axial direction or in the circumferential direction, wherein adjacent main portions are connected by deflection portions of the cooling channel in such a way that a meandering cooling path is formed, wherein a guide element is formed within each of the deflection portions and separates the cooling path into two cooling sub-paths.
    Type: Grant
    Filed: June 22, 2020
    Date of Patent: November 29, 2022
    Assignee: VALEO SIEMENS EAUTOMOTIVE GERMANY GMBH
    Inventors: Nils Krais, Philipp Söntgerath
  • Patent number: 11515749
    Abstract: A motor assembly includes a motor, a housing including a housing space to house the motor, oil in a vertically lower region of the housing space, and an oil passage to lead the oil from the vertically lower region of the housing space through the motor to the vertically lower region of the housing space. The oil passage includes a first oil passage extending through an inside of the motor, and a second oil passage extending through an outside of the motor. One of the first oil passage and the second oil passage includes a cooler to cool the oil therein.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: November 29, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Yasuo Yamaguchi, Takayuki Migita, Yuki Ishikawa
  • Patent number: 11509196
    Abstract: Motor vehicle comprising an electric motor for driving the motor vehicle and a power converter device for supplying an alternating current to the electric motor, the power converter device having a cooling device, and the cooling device comprising at least one coolant connection, which is fluidically connected to a coolant port of the electric motor to form a common cooling circuit.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: November 22, 2022
    Assignee: AUDI AG
    Inventor: Benjamin Söhnle
  • Patent number: 11502585
    Abstract: A method for producing a squirrel-cage rotor of an asynchronous machine includes the following steps: providing a main body, which is magnetically conductive at least in parts and has substantially axially extending grooves; inserting electrical conductors into the grooves in such a way that the conductors protrude from the axial ends of the magnetically conductive main body; positioning electrically conductive end rings, which have a plurality of openings for receiving the respective conductors; and establishing electrical contact between the conductors and the end rings by way of one or more additive manufacturing processes.
    Type: Grant
    Filed: February 5, 2019
    Date of Patent: November 15, 2022
    Assignee: Siemens Mobility GmbH
    Inventors: Olaf Koerner, Freerk Jacobus Oude Kotte
  • Patent number: 11496023
    Abstract: A drive apparatus includes: a motor having a rotor and a stator core; a housing; and a first injection port to inject a refrigerant into the stator core. The stator core includes: a core body surrounding the rotor; and a fixing portion projecting radially outward from the core body and fixed to the housing. The fixing portion includes an upper fixing portion. The first injection port is lower than an end portion of the upper fixing portion. The upper fixing portion is on one circumferential side of the first injection port. The first injection port is open in a first direction facing a directly lower side or a second direction angled to the one circumferential side with respect to the first direction, and is facing a portion on the other circumferential side of a boundary with an end portion of the upper fixing portion on the other circumferential side.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: November 8, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Keigo Nakamura, Daichi Furukawa
  • Patent number: 11496026
    Abstract: This stator manufacturing method includes a step in which one of a skew-forming mechanism portion and a skew-forming jig presses, with the skew-forming jig, the skew-forming mechanism portion having a shape corresponding to the shape of a skew, to form a skew having a bent shape or a curved shape.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: November 8, 2022
    Assignees: AISIN CORPORATION, AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Teppei Tsuda, Masafumi Sakuma
  • Patent number: 11489408
    Abstract: A system includes a shaft body defining a longitudinal axis. A first internal fluid channel extends axially within the shaft body and includes an inlet opening through the shaft body for fluid communication of external fluid into the first internal fluid channel and an outlet opening through the shaft body for fluid communication of fluid from the first internal fluid channel to an area external of the shaft body. A second internal fluid channel extends axially within the shaft body and includes an inlet opening through the shaft body for fluid communication of external fluid into the second internal fluid channel and an outlet opening through the shaft body for fluid communication of fluid from the second internal fluid channel to an area external of the shaft body. The first and second internal fluid channels are in fluid isolation from one another within the shaft body.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: November 1, 2022
    Assignee: Hamilton Sundstrand Corporation
    Inventor: Brian C. Konopa
  • Patent number: 11489398
    Abstract: The water channel structure for connecting a controller to a motor includes a controller main housing and a motor body that are connected and fastened to each other. A water-cooling plate is fastened in the controller main housing. A water inlet and a water outlet are respectively provided at two ends of the controller main housing. A heat dissipation water channel communicating the water inlet with the water outlet inside the controller main housing is formed in the water-cooling plate. A motor water channel is provided inside the motor body. A transition water joint is provided at the water outlet of the controller main housing. The transition water joint is directly connected to a water inlet of the motor water channel.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: November 1, 2022
    Assignee: HEFEI JEE POWER SYSTEMS CO., LTD.
    Inventors: Lei Liu, Jianhua Mao, Zhan Wang, Hongxin Wu, Yang Yang
  • Patent number: 11489399
    Abstract: In one aspect of a motor of the present invention, an inverter housing portion is located on the radially outer side of a stator housing portion. A housing has a tubular circumferential wall surrounding the rotor and the stator on the radially outer side of the rotor and the stator, and is a single member. The circumferential wall has a first cooling flow path, and a partition wall that partitions the stator housing portion and the inverter housing portion. The first cooling flow path extends in the circumferential direction, and at least a part of the first cooling flow path is provided in the partition wall. As viewed along the predetermined direction, a portion of the first cooling flow path provided in the partition wall has a portion overlapping the inverter and a portion overlapping the capacitor.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: November 1, 2022
    Assignee: NIDEC CORPORATION
    Inventors: Yoshihisa Okuhata, Kunihiro Kajita, Mika Konagaya, Yosuke Ito
  • Patent number: 11482900
    Abstract: An insulating body for an electric machine includes outer walls of a plastic, which delimit a body interior. In the body interior, at least one winding zone for receiving a stator winding and at least one passage zone for receiving a cooling passage are provided.
    Type: Grant
    Filed: November 19, 2019
    Date of Patent: October 25, 2022
    Assignee: Mahle International GmbH
    Inventors: Roberto Almeida E Silva, Bernd Blankenbach, Terry Cox, Philip Grabherr, Niklas Kull, Tim Male, Peter Pisek, Peter Sever, Josef Sonntag, Martin Williams
  • Patent number: 11476730
    Abstract: An electric machine, for example for a motor vehicle, is disclosed. The electric machine includes a rotor rotatable about an axis of rotation that defines an axial direction of the electric machine, and a stator including stator windings. A coolant distributor chamber and a coolant collector chamber are provided, and arranged with an axial spacing to one another. The coolant distributor chamber fluidically communicates with the coolant collector chamber for cooling the stator windings via at least one cooling channel that can be flowed through by a coolant. At least one of the stator windings is embedded into a plastics compound composed of an electrically insulating plastic for thermal coupling.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: October 18, 2022
    Inventors: Mirko Hoerz, Hans-Ulrich Steurer, Josef Sonntag, Stojan Markic, Andrej Licen, Aleks Medvescek, Peter Sever, Philip Grabherr