Heat-exchange Structure Patents (Class 310/64)
  • Patent number: 11942850
    Abstract: The invention specifies an electrical machine (1, 1a . . . 1c) which comprises a housing (8), a stator (5) which is arranged in the housing (8) and a rotor (3) which is rotatably mounted in the housing (8). At least one first coolant duct (9) of a first cooling circuit (15) and at least one second coolant duct (10, 10a, 10b) of a second cooling circuit (16) are arranged in the region of the stator (5) in the housing (8). In this case, the coolant ducts (9, 10, 10a, 10b) and the housing (8) form a heat exchanger between the first cooling circuit (15) and the second cooling circuit (16). In addition, the invention specifies a gear motor comprising the electrical machine (1, 1a . . . 1c), in which gear motor the transmission is hydraulically connected to the at least one second coolant duct (10, 10a, 10b) of the second cooling circuit (16). The invention also specifies a vehicle (27) which is driven by the said electrical machine (1, 1a . . . 1c) or by the said gear motor.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: March 26, 2024
    Assignee: Valeo Siemens eAutomotive Germany GmbH
    Inventors: Bernd Haas, Burkhard Pollak
  • Patent number: 11929644
    Abstract: The rotating electric machine (1) having a housing comprising first (14) and second (15) clamp members and an inner face, a stator comprising a stator body (41) clamped between the first and second clamp members and having an outer face extending opposite the inner face together defining an annular cooling chamber (21) surrounding the stator body, the stator body comprising a longitudinal stack of stator sheets (410), each stator pack of which comprises an annular core having an outer circumference and at least two radially centrifugal protuberances projecting from the outer circumference of the annular core, in the annular cooling chamber, and diametrically opposite one another, the stator sheets of the longitudinal stack being identical and two adjacent stator sheet of the longitudinal stack being angularly offset from each other such that the respective protuberances thereof do not extend opposite one another.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: March 12, 2024
    Assignee: NIDEC PSA EMOTORS
    Inventors: Ioan Deac, Juan Wang, Hussain Nouri, Guillaume Tardy
  • Patent number: 11901769
    Abstract: A stator includes a plurality of same laminations each defining a piloting tab on a perimeter thereof, and stacked to form a stator body and such that the piloting tabs define at least two axially extending serrated edge portions spaced apart from one another around a perimeter of the stator body or at least two sets of axially aligned housing contact pads spaced apart from one another around the perimeter.
    Type: Grant
    Filed: January 27, 2022
    Date of Patent: February 13, 2024
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventors: Franco Leonardi, Brian Christian Orr, Joel Hetrick
  • Patent number: 11843301
    Abstract: A linear motor including a stator assembly, an armature mechanically coupleable to a test specimen configured to be moved relative to the stator assembly by operation of the linear motor, and a suspension system configured facilitate movement of the armature relative to the stator assembly along an axis of movement without physically touching the armature during movement. Further disclosed is a multi-phase linear motor, a linear motor having an armature with an array of flat magnets, and a linear motor having a magnetic damping system.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: December 12, 2023
    Assignee: WATERS TECHNOLOGIES CORPORATION
    Inventors: Charles Groepper, Sudarshan Betigeri, David L. Dingmann, Kevin Alstrin, Nicholas Fruge
  • Patent number: 11840290
    Abstract: In an electric power steering device in which a control unit and a motor are integrated, when the control unit is housed in a case, although a frame, by which the motor and the control unit are compartmentalized, is required, there have been problems in that the case is deformed by a pressure which influences the case when the frame is provided, and a position accuracy of a shaft center of a rotation shaft of the motor is worsened. Therefore, in order to reduce a deformation of the case, a step portion is provided at an inner wall surface of the case and the frame is contacted to the step portion, and moreover, a connecting portion is provided between an outer circumference portion of the frame and an inner circumference portion of the case, whereby a movement of the frame is restrained.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: December 12, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yoshihiko Onishi, Toyoaki Udo
  • Patent number: 11831203
    Abstract: The present invention relates to an improved structure of a core-bobbin assembly without using a support ring, an O-ring, and a gasket which support and cool the core-bobbin assembly of a motor for a vehicle, so that a weight decreases, and a heat transfer area increases. The present invention also relates to a motor cooling method using the same. In the present invention, an outer circumference sheath (210) is added to a bobbin to cover an entirety of a core outer circumferential portion (110) including a cooling surface press-inserted into and in contact with a housing, that is, a recessed outer circumferential surface (120) formed on the core outer circumferential portion (110).
    Type: Grant
    Filed: October 15, 2020
    Date of Patent: November 28, 2023
    Assignee: Hyundai Mobis Co., Ltd.
    Inventors: Hye Seong Yang, Yeong Woo Seo, Seong Jun Hwang, Jung Kyu Yim
  • Patent number: 11831226
    Abstract: In a first aspect of the invention there is provided a generator for a wind turbine defining a central generator axis. The generator includes a stator support frame and an environmental conditioning module removably attached to the stator support frame. The environmental conditioning module includes a heat exchanger and an air mover supported by a module housing. The environmental conditioning module further includes fluid interface connections associated with the heat exchanger, the fluid interface connections being releasably connectable to a fluid supply system associated with the heat exchanger, and electrical interface connections associated with the air blower, the electrical interface connections being releasably connectable to an electrical supply system associated with the air mover.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: November 28, 2023
    Assignee: Vestas Wind Systems A/S
    Inventors: Peter Mongeau, Mustafa Gündüz
  • Patent number: 11821370
    Abstract: An engine system includes an engine duct and a tail cone arranged radially inwardly of the engine duct. The tail cone has an outer surface and an inner surface. A generator housing is arranged in the tail cone. The generator housing includes an outer surface portion spaced from the inner surface of the tail cone. A generator is mounted in the generator housing. An air duct extends from the generator, through the generator housing, through the tail cone, and through the engine duct. The air duct includes an opening exposed to an air stream passing over the engine duct.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: November 21, 2023
    Assignee: HAMILTON SUNDSTRAND CORPORATION
    Inventor: Debabrata Pal
  • Patent number: 11817744
    Abstract: A stator for an electric machine of a motor vehicle includes a laminated core having an inner side with winding grooves and an outer side. Windings, which are arranged in the winding grooves, form winding heads on axially opposing front faces of the laminated core. A cooling jacket conducts cooling fluid and has a first metal sheet which forms an inner wall of the cooling jacket facing the laminated core, and a second metal sheet which forms an outer wall of the cooling jacket surrounding the inner wall. An axial height of the cooling jacket exceeds an axial height of the laminated core. The cooling jacket has a laminated-core cooling jacket region for encasing the laminated core and two axially opposing winding-head cooling jacket regions adjoining the laminated-core cooling jacket region for encasing the winding heads.
    Type: Grant
    Filed: October 23, 2019
    Date of Patent: November 14, 2023
    Assignee: Bayerische Motoren Werke Aktiengesellschaft
    Inventors: Felix Bolotnikov, Thomas Hoefler, Joachim Maerz, Jerome Ragot
  • Patent number: 11817740
    Abstract: An electric motor includes a rotor, a stator assembly, and a plurality of heat dissipation members fixed to the stator assembly and to release heat of the stator assembly.
    Type: Grant
    Filed: January 20, 2017
    Date of Patent: November 14, 2023
    Assignee: Mitsubishi Electric Corporation
    Inventors: Hiroki Aso, Takaya Shimokawa, Ryogo Takahashi, Takanori Watanabe, Kazuma Nomoto
  • Patent number: 11801923
    Abstract: A gyroscopic roll stabilizer comprises a gimbal having a support frame and enclosure configured to maintain a below-ambient pressure, a flywheel assembly including a flywheel and flywheel shaft, one or more bearings for rotatably mounting the flywheel inside the enclosure, a motor for rotating the flywheel, and bearing cooling system for cooling the bearings supporting the flywheel. The bearing cooling system enables heat generated by the bearings to be transferred through the flywheel shaft to a heat sink disposed within a cavity in the end of the flywheel shaft, or to a liquid coolant circulating within the cavity.
    Type: Grant
    Filed: August 3, 2022
    Date of Patent: October 31, 2023
    Assignee: WAVETAMER LLC
    Inventors: Grady F. Smith, David Holden, Jeffrey Peterson
  • Patent number: 11777369
    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: April 13, 2021
    Date of Patent: October 3, 2023
    Assignee: Milwaukee Electric Tool Corporation
    Inventor: Andrew T. Beyerl
  • Patent number: 11770041
    Abstract: Various methods and systems are provided for an electric motor including a coolant jacket molded to a stator. In one embodiment, an electric motor comprises a stator, and a coolant jacket molded as a single, unitary piece in sealing engagement against an outer perimeter of the stator, with a first end of the coolant jacket forming a first integrated spray ring.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: September 26, 2023
    Assignee: Dana Heavy Vehicle Systems Group, LLC
    Inventor: Darren J. Ziskovsky
  • Patent number: 11764646
    Abstract: A fluid pump includes a pump casing, a motor connected to the pump casing, and an impeller driven by the motor. The motor includes a housing and a stator arranged in the casing. The housing is made of a non-magnetic material. The stator includes a stator iron core and a plurality of windings wound on the stator iron core. The motor further includes a sleeve having a cylindrical main body and a flange extending radially outwards from one end of the main body and fixed to the housing. An annular space is jointly bounded by the sleeve and the housing to accommodate the stator. A part of inner surface of the housing and a part of bottom surface of the flange facing the annular space are coated with a metal coating for electromagnetic wave shielding.
    Type: Grant
    Filed: September 17, 2021
    Date of Patent: September 19, 2023
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Xiaoming Wang, Long Yu, Pinghua Tang, Yi Jing, Ruifeng Qin, Guoyuan Zou
  • Patent number: 11764625
    Abstract: A segment sheet for a stator lamination stack of a generator of a wind turbine, wherein the segment sheet has the shape of a ring segment, having a first radial section, in which recesses are provided for receiving a stator winding, having a second radial section, which is arranged radially adjacent to the first section and which forms a segment of a magnetic yoke of the generator, and having a third radial section, which is arranged radially adjacent to the second section. The proposal is that the third radial section has at least two recesses arranged in an azimuthally spaced manner, which are designed for a positive connection to profiled strips arranged on a stator support ring.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: September 19, 2023
    Assignee: Wobben Properties GmbH
    Inventor: Jochen Röer
  • Patent number: 11670987
    Abstract: An electric machine for converting between electrical and rotary mechanical energy includes a rotor that is journalled to rotate about an axis of rotation, and an adjacent stator that magnetically exerts torque upon the rotor across a magnetic airgap in response to applied electric power to air core stator windings that are bonded in thermal contact to a slotless ferromagnetic stator backiron forming the stator surface facing the magnetic airgap, the rotor has a surface that is opposed to, and spaced apart from, the corresponding surface on the stator, the rotor surface and the stator surface define the airgap therebetween. The rotor has permanent magnets that generate magnetic flux across the magnetic airgap and through the air core stator windings. The air core windings are cooled by a physical loop having an evaporator, a remote located condenser and connected by two fluid flow lines filled with two phase fluid comprising liquid and gas both traveling in the same direction around the physical loop.
    Type: Grant
    Filed: January 20, 2021
    Date of Patent: June 6, 2023
    Inventors: Christopher W. Gabrys, Timothy S. Rodgers
  • Patent number: 11664705
    Abstract: A cooling structure for a rotary electric machine includes: a plurality of cooling holes provided such that the cooling holes penetrate from an outer peripheral surface of a stator core to respective slots; a refrigerant supply mechanism configured to supply liquid refrigerant to supply cooling holes among the cooling holes, the supply cooling holes being configured such that radially outer ends of the supply cooling holes are placed above radially inner ends of the supply cooling holes in the gravitational direction; and a refrigerant guide provided between a rotor and a stator and configured to catch the liquid refrigerant falling down from the radially inner ends of the supply cooling holes through their corresponding slots and to guide the liquid refrigerant to slots placed on the lower side in the gravitational direction among the slots.
    Type: Grant
    Filed: August 9, 2021
    Date of Patent: May 30, 2023
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventor: Satoru Hashigami
  • Patent number: 11646617
    Abstract: A high-frequency rotating structure provided by the invention has an annular rotating element with a quincuncial outer periphery, a plurality of radially arranged accommodating grooves respectively disposed in an annular body of the rotating element, a plurality of hole-shaped magnetic barrier spaces respectively disposed in the annular body, and respectively communicated with one of two ends of each of the accommodating grooves, and a plurality of magnetic assemblies respectively embedded in each of the accommodating grooves. A shortest first distance A between a groove wall of each of the two ends of each of the accommodating grooves and an outer annular surface of the body, and a shortest second distance B between a hole wall of each of the magnetic barrier spaces and the outer annular surface of the body are defined by the following formula 1: ? = A B × 1 ? 0 ? 0 ? % , 1 ? 2 ? 2 ? % ? ? ? 9 ? 0 ? % .
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: May 9, 2023
    Assignee: HIWIN MIKROSYSTEM CORP.
    Inventors: Ruei-Bin Shiao, Cheng-Te Chi, Zhe-Wei Cheng, Ming-Chang Hsu
  • Patent number: 11634168
    Abstract: A motor includes a rotor including an axially extending shaft, a stator, a housing, a heat sink disposed axially above the stator, a board fixed axially above the heat sink, a connector disposed radially outside the housing, and a connector pin accommodated in the connector. The heat sink includes a main body, and a protrusion which is continuous with the main body, the protrusion extending radially outward of the housing. The connector, the protrusion, and the board overlap in this order when viewed from axially below. The connector pin is positioned radially outside the protrusion.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 25, 2023
    Assignee: NIDEC CORPORATION
    Inventors: Takashi Hattori, Toshiya Okamoto, Takanobu Oyama
  • Patent number: 11628914
    Abstract: A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions.
    Type: Grant
    Filed: May 27, 2022
    Date of Patent: April 18, 2023
    Assignee: WAVETAMER LLC
    Inventor: Jeffrey Peterson
  • Patent number: 11621610
    Abstract: A cooling assembly for an electric machine is disclosed. The cooling assembly may include a generally cylindrical cooling jacket for receiving a shaft, a rotor and a stator. Further, the cooling jacket jacket may be disposed in an electric machine housing. Additionally, the cooling assembly may include at least two first passages in the cooling jacket for circulating a first coolant and at least one second passage in the cooling jacket for circulating a second coolant, the second passage being disposed between the at least two first passages. Further, the cooling assembly may include a third passage on an exterior of the machine housing, the third passage extending through the housing to fluidly connect the at least two first passages and bypass the second passage.
    Type: Grant
    Filed: January 27, 2020
    Date of Patent: April 4, 2023
    Assignee: Caterpillar Inc.
    Inventors: Keith A. Leisinger, Joseph D. Tigue, Gregory T. Austin, Ranjit Singh
  • Patent number: 11611248
    Abstract: A stator (1) for an electric machine (100) has stator laminations (3) stacked in an axial direction (A) to form a stator lamination stack (2). The stator laminations (3) have strip-shaped inserts (4) extending in a radial direction (R). The inserts (4) have a higher thermal conductivity than the rest of the stator lamination (3). The stator laminations (3) are rotated in relation to one another in an azimuthal direction (U) about an angle of rotation (D) in such a manner that the inserts (4) of directly adjacent stator laminations (3) are not arranged one above another in the axial direction (A). An electric machine (100), a motor vehicle (200) and a method for producing a stator (1) also are provided.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: March 21, 2023
    Assignee: Dr. ing. h. c. F. Porsche AG
    Inventor: Stefan Goetz
  • Patent number: 11594928
    Abstract: A turbogenerator includes a stator core defining a first end and a second end, a plurality of stator bars disposed within the stator core, each stator bar including a coolant flow path, and a parallel ring having a first segment and a second segment separate from the first segment. The parallel ring is coupled to the first end of the stator core and is arranged to electrically connect the plurality of stator bars and to fluidly connect the coolant flow paths of the plurality of stator bars. A tang includes a main chamber, a first coolant opening, a second coolant opening, and a distribution channel that fluidly interconnects the main chamber, the first coolant opening, and the second coolant opening. A first lead tube has a first lead end connected to the first coolant opening and a second lead end connected to the first segment, and a second lead tube separate from the first lead tube has a first lead end connected to the second coolant opening and a second lead end connected to the second segment.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: February 28, 2023
    Assignee: SIEMENS ENERGY, INC.
    Inventor: Nicholas Eberhardt
  • Patent number: 11575285
    Abstract: An electric machine includes a stator and a rotor. The stator defines a central orifice and has an inner diameter. The rotor has an outer diameter and is disposed within the stator. An airgap is defined between inner diameter and the outer diameter. The rotor defines a plurality of cavities. The rotor has magnets disposed within each of the cavities. The magnets define a plurality of pole arc angles. Each pole arc angle is centered about a D-axis. The rotor has an outer periphery. The outer periphery forms smooth spline curves positioned within each pole arc angle. The smooth spline curves deviate radially inward relative to the outer diameter.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: February 7, 2023
    Assignee: Ford Global Technologies, LLC
    Inventors: Jacob Krizan, Adeeb Ahmed
  • Patent number: 11552511
    Abstract: A stator assembly, an electrical motor having the stator assembly, a wind power generator set and a method for cooling a stator assembly are provided. The stator assembly includes a stator support and a stator core mounted on the stator support, wherein the stator support includes a support enclosure plate, a first axial air flow channel is formed between the support enclosure plate of the stator support and a radial side surface of the stator core, and the first axial air flow channel is used for receiving a first cold air flow, so that the cold air flow can flow in the axial direction. The stator assembly can introduce a cold air flow from the other side, opposite an air gap, of a stator during the operation of an electrical motor, so that two radial sides of the stator can be cooled at the same time.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: January 10, 2023
    Assignee: BEIJING GOLDWIND SCIENCE & CREATION WINDPOWER EQUIPMENT CO., LTD.
    Inventor: Shengjun Ma
  • Patent number: 11545875
    Abstract: A motor is provided. The motor includes a cooling system configured to cool a stator having a core wound around by a coil, wherein the cooling system includes oil holders installed on a side under the stator in an inner space of a motor housing and provided to allow oil to be collected up to a level capable of allowing at least some of a lower end section of the stator to be immersed for cooling.
    Type: Grant
    Filed: June 11, 2020
    Date of Patent: January 3, 2023
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Jae Hyeon Lee, Jeong Bin Yim, Jin Ho Kim, Tae Kil Kim, Dae Woong Han, Ji Wan Cha
  • Patent number: 11535097
    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. In order to increase the velocity of the coolant exiting the axial coolant channels, thereby improving end winding cooling uniformity, end laminations are integrated into the stator which restrict the flow of coolant from the axial coolant channels.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: December 27, 2022
    Assignee: Atieva, Inc.
    Inventors: Emad Dlala, Jeremy Mayer, Barnaby James Gerard Lewis, Mohammed Mahmoudi
  • Patent number: 11489381
    Abstract: A rotor structure of an electric motor includes a rotor and a stator. The rotor is fixed to a motor shaft and rotates integrally with the motor shaft. The stator is fixed around the rotor. The rotor includes a cylindrical rotor core coaxially press-fitted and fixed to the motor shaft, a pair of ring-shaped end surface plates disposed facing two axial end surfaces of the rotor core, and permanent magnets respectively housed in slots penetrating an outer peripheral portion of the rotor core in an axial direction. A plurality of openings in which the permanent magnets are exposed are formed in a circumferential direction in an outer peripheral portion of one of the end surface plates, and a ring-shaped cover that covers the openings is detachably attached to an outer end surface of the outer peripheral portion of the end surface plate.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: November 1, 2022
    Assignee: Honda Motor Co., Ltd.
    Inventors: Andrii Pydin, Shigeru Koyama, Yasuhito Takei
  • Patent number: 11489409
    Abstract: A motor housing assembly for cooling a motor assembly is disclosed. The motor housing assembly includes a stator and a rotor. To reduce a weight and a manufacturing cost, the motor housing assembly includes an aluminum housing coupled to an outer circumferential surface of a motor assembly and configured to form a first space between the aluminum housing and the motor assembly, the first space including an oil flow channel and a plastic housing coupled to an outer circumferential surface of the aluminum housing and configured to form a second space between the plastic housing and the aluminum housing, the second space including a water flow channel.
    Type: Grant
    Filed: June 15, 2020
    Date of Patent: November 1, 2022
    Assignee: LG MAGNA E-POWERTRAIN CO., LTD.
    Inventors: Deokkyu Lee, Jinho Yoon, Junggu Lee
  • Patent number: 11466629
    Abstract: An exhaust-gas flap device, especially for the exhaust-gas flow of an internal combustion engine, has a flap pipe and a flap plate that is supported, in the interior of the flap pipe, on a pivot shaft that is rotatable about a pivot axis. The exhaust-gas flap device further includes a pivoting drive for the pivot shaft with a drive element. A coupling unit couples the drive element to the pivot shaft for conjoint rotation about the pivot axis. Vibration-damping material is arranged in the region of the coupling unit.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: October 11, 2022
    Assignee: Purem GmbH
    Inventors: Markus Lory, Markus Birgler, Matthias Grün, Andreas Wacker, Annika Zeumer, Ralph Schenk, Miljenko Novosel
  • Patent number: 11440629
    Abstract: A gyroscopic boat roll stabilizer for a boat comprises a gimbal, having a gimbal axis, an enclosure mounted to the gimbal and configured to precess about a gimbal axis, a flywheel assembly rotatably mounted inside the enclosure for generating a torque that is applied to counter a rolling motion of the boat, and a braking system for controlling precession of the enclosure. The braking system is configured to enable precession in the first and second directions of up to at least 45 degrees.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: September 13, 2022
    Assignee: WAVETAMER LLC
    Inventor: Jeffrey Peterson
  • Patent number: 11431215
    Abstract: An embodiment relates to a rotor comprising: a main body; an upper terminal disposed on an upper surface of the main body; and a lower terminal disposed on a lower surface of the main body, wherein the upper terminal comprises a first upper terminal and a second upper terminal; the lower terminal comprises a first lower terminal; the main body comprises a first hole and a second hole that penetrate the main body, wherein one end of the first lower terminal is connected to the first upper terminal through the first hole and the other end is connected to the second upper terminal through the second hole by means of a bus bar, and to a motor comprising the same. As such, it is possible to enhance space utilization inside the motor.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 30, 2022
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Byeong Jong Yoo
  • Patent number: 11418071
    Abstract: A rotating electrical machine includes a rotor, a stator core, coils, and insulating sheets. A discharge port that discharges coolant is provided on an outer circumferential face of the rotor. The stator core includes an annular or cylindrical yoke, and teeth disposed on an inner circumferential face of the yoke in a circumferential direction with spaces. The stator core is disposed encompassing an outer circumference of the rotor. A slot-wall-face channel is provided on a wall face of the stator core defining a slot, and configured to open as to the slot for the coolant to flow through. The coils are wound on the teeth. The insulating sheet is disposed in the slot and interposed between the stator core and the coil, and is configured with at least part of the slot-wall-face channel open as to the coil.
    Type: Grant
    Filed: October 8, 2020
    Date of Patent: August 16, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Kenta Tabuchi, Takashi Matsumoto
  • Patent number: 11404940
    Abstract: A brushless DC motor, including a base, an insulation seat, a rotor assembly, a revolving shaft, a stator assembly, a control panel, a Hall circuit board, and an end cover. The revolving shaft is connected to the rotor assembly. The rotor assembly includes a housing and a plurality of magnetic tiles. The housing includes an inner wall and a cavity defined by the inner wall. The plurality of magnetic tiles is disposed on the inner wall. The stator assembly is disposed in the cavity. The base includes a cylindrical sleeve extending from a center of the base to the cavity of the rotor assembly. The stator assembly is connected to the cylindrical sleeve; two ends of the cylindrical sleeve are provided with a first bearing and a second bearing, respectively; and two ends of the revolving shaft are supported by the first bearing and the second bearing, respectively.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: August 2, 2022
    Assignee: ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD.
    Inventors: Zhaoxiang Hu, Jianhui Li, Mingpan Pan, Chao Wang
  • Patent number: 11394262
    Abstract: The invention relates to a winding piece (1), in particular in the shape of a hairpin, which is provided to be inserted into the grooves (7) of an electrical machine, comprising two limbs (2) and a curved transition region (3), which connects the two limbs (2) to each other. According to the invention, the limbs (2) each have a first portion (4) having a profile, which is adjusted to the cross-section of the groove (7), and an end portion (5), which has a round profile, wherein the winding piece (1) is formed as a hollow conductor, which has a penetrating channel (9), through which a coolant can be led.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: July 19, 2022
    Assignee: DYNAMIC E FLOW GMBH
    Inventor: Nikolaus Schweinert
  • Patent number: 11394272
    Abstract: A stator comprises a main body with a slot defined therein. A winding is positioned within the slot and a wire is positioned within the slot. The wire is positioned between the winding and the main body.
    Type: Grant
    Filed: September 24, 2021
    Date of Patent: July 19, 2022
    Assignee: MILWAUKEE ELECTRIC TOOL CORPORATION
    Inventor: Ryan B. Jipp
  • Patent number: 11387712
    Abstract: An electric motor includes a stator, a rotor, a rotor shaft and a pump. The rotor is disposed within the stator and separated from the stator by an airgap. The airgap inadvertently accumulates a fluid. The rotor shaft is connected to the rotor. The pump is configured to move the fluid out of the airgap.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: July 12, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Derek F. Lahr, Farzad Samie, Alireza Fatemi
  • Patent number: 11365784
    Abstract: An eccentric oscillation type speed reducer includes: an external gear which meshes with the internal gear; an eccentric body shaft which oscillates the external gear; and an input shaft bearing which supports the eccentric body shaft. The casing and the external gear are made of resin, and the input shaft bearing is made of metal.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: June 21, 2022
    Assignee: SUMITOMO HEAVY INDUSTRIES, LTD.
    Inventors: Mitsuhiro Tamura, Akira Yamamoto
  • Patent number: 11362563
    Abstract: A motor includes a cooling enclosure. The cooling enclosure includes a cover body, an inner fan, and an outer fan. A first cooling cavity, a second cooling cavity, and an isolating cavity between the first cooling cavity and the second cooling cavity are formed in the cover body. A plurality of first and second cooling pipes are respectively disposed in the first and second cooling cavity; both being in communication with the isolating cavity and the outside. The cover body includes a first surface and an opposite second surface. The inner fan is disposed on the first surface. Sides of the inner fan are respectively in communication with the first and second cooling cavities. The inner fan is configured to provide circulating power for internal circulating air. The outer fan is in communication with the isolating cavity. The cooling enclosure and the motor can realize relatively high cooling efficiency.
    Type: Grant
    Filed: May 27, 2017
    Date of Patent: June 14, 2022
    Assignee: SIEMENS AKTIENGESELLSCHAFT
    Inventor: Wei Zhang
  • Patent number: 11316409
    Abstract: A motor includes a holder having an annular plate shape with a plate thickness in an axial direction of a rotor housing, and including a flange section disposed so the rotor housing rotates at an inner side of the flange section, a center piece including a plate-shaped section opposing the flange section, and a heat sink including a heat dissipation section projecting from the plate-shaped section toward the flange section. The flange section integrates with a flow rectification section including a cooling air flow rectification face extending along a cooling air flow path between the flange section and the plate-shaped section. The heat dissipation section is disposed in the cooling air flow path. The cooling air flow rectification face closely opposes the top of the heat dissipation section. A bulk reduction section is between the cooling air flow rectification face and the flange section opposite of the plate-shaped section.
    Type: Grant
    Filed: June 13, 2018
    Date of Patent: April 26, 2022
    Assignee: DENSO CORPORATION
    Inventors: Ryosuke Goto, Hideaki Ishii
  • Patent number: 11309760
    Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: April 19, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masashi Matsumoto, Hazuki Kawamura, Kohei Watanabe, Yuki Tanaka, Haruki Kusamaki
  • Patent number: 11289957
    Abstract: A generator and a wind turbine are provided. The generator includes an active cooling circuit and a passive cooling circuit, the active cooling circuit is in communication with a closed space, and the passive cooling circuit is in communication with the external environment. The active cooling circuit includes mutually communicating chambers located at two axial ends of the generator, an air gap between a rotor and a stator of the generator, and radial channels distributed along an axial direction of the generator. The active cooling circuit is provided with a cooling device in communication with the closed space, and the stator is fixed on a fixed shaft through a stator bracket. The passive cooling circuit includes a first axial channel running through the stator, a second axial channel running through the stator bracket, and an outer surface of the generator. A heat exchanger is further arranged inside the generator.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: March 29, 2022
    Assignee: XINJIANG GOLDWING SCIENCE & TECHNOLOGY CO., LTD.
    Inventors: Jinhui Li, Junwei Liu, Wenhua Xu
  • Patent number: 11277046
    Abstract: A rotary electric machine includes a stator core having a plurality of teeth arranged in a row along a circumferential direction of the stator core, and a stator coil composed of a winding wire wound around the teeth. The stator coil includes coil end portions extending, outside the stator core in an axial direction thereof, along a substantially circumferential direction of the stator core, and straight portions extending along the axial direction, the straight portions being at least partially housed in a slot which is a void defined by two adjacent teeth of the plurality of teeth. In the rotary electric machine, a cooling groove is formed at least in the straight portion, the cooling groove functioning as a cooling channel through which a cooling fluid flows, and each straight portion includes only one cooling channel.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: March 15, 2022
    Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Masashi Matsumoto, Hazuki Kawamura, Kohei Watanabe, Yuki Tanaka, Haruki Kusamaki
  • Patent number: 11258338
    Abstract: An electric motor including a stator body with a stator laminated core and a stator slot, wherein the stator slot has a slot wall with a slot wall insulation for electrical insulation, as well as at least one electrical conductor which is received by the stator slot, the slot wall insulation having a tooth-shaped configuration.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: February 22, 2022
    Assignee: AUDI AG
    Inventor: Korbinian Weber
  • Patent number: 11228221
    Abstract: A motor includes a stator with a stator core, an insulator, coils, and a terminal pin. The stator core includes an annular core back and teeth. The teeth extend radially outward from the core back and are arranged in the circumferential direction. The coil is defined by a conductive wire wound around a tooth via the insulator. The conductor is connected to the conductive wire and is connected to the circuit board. The insulator includes a cylindrical terminal holder located between adjacent ones of the teeth, extends in the axial direction, and accommodates the conductor. The core back includes a stator recess located between adjacent ones of the teeth and is recessed radially inward from the radially outer surface. The stator recess accommodates at least a portion of the terminal holder.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: January 18, 2022
    Assignee: NIDEC CORPORATION
    Inventor: Yuya Horii
  • Patent number: 11199192
    Abstract: Example implementations relate to a method and system for pumping fluid with a pump assembly to cool waste-heat producing system of an apparatus. The pump assembly includes a first housing, a rotor assembly, a stator assembly, a second housing, an outlet connection port coupled to the second housing, and a guide vane insert. The first housing includes a first bore and first inlet guide vanes (IGVs) coupled to inlet of the first bore. The rotor assembly including an impeller, is disposed in the first bore. The stator assembly including a coil, is mounted around a portion of the first housing. The second housing has a second bore fluidically coupled to the first bore, and first outlet guide vanes (OGVs) coupled at an entrance of the second bore. The guide vane insert including second OGVs, is disposed within the outlet connection port and fluidically coupled to outlet of the second bore.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: December 14, 2021
    Assignee: Hewlett Packard Enterprise Development LP
    Inventors: John Franz, Tahir Cader, Ernesto Ferrer Medina
  • Patent number: 11172597
    Abstract: A first supporting element, e.g. a PCB, may have opposed sides. A heat sink body is mounted on one side of the first supporting element, and having peripheral surface(s) for heat dissipating electrical device. A first circuit includes the heat dissipating electrical device(s) mounted and operates at a first voltage level. At least one circuit board assembly is mounted on the other side of the first supporting element, and extends from a first end to a second end. It has a first end connector at the first end, for connecting the first end of the circuit board assembly to the first circuit, and providing a signal interface between the first circuit operating at the first voltage level and a second circuit operating at a second voltage level different or equal to the first voltage level.
    Type: Grant
    Filed: June 26, 2020
    Date of Patent: November 9, 2021
    Assignee: Algozen Corporation
    Inventor: Michael John Richards
  • Patent number: 11152844
    Abstract: An electric machine including a stator having a fully non-magnetic core and stator windings formed of a non-superconducting transposed conductor to reduce eddy current losses. It further includes a rotor having a fully non-magnetic core and superconducting windings or superconducting magnets which produce a magnetic field for interaction with the stator windings. A cryogenic cooling system is arranged to cool the stator windings to reduce conduction losses in the stator windings.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: October 19, 2021
    Assignee: ROLLS-ROYCE plc
    Inventors: Paul R Miller, Stephen M Husband, Alexander C Smith, Charalampos Manolopoulos, Matteo Iacchetti
  • Patent number: 11133721
    Abstract: A pumping system deployable in a wellbore includes a primary driven component, a secondary driven component and a motor. The motor is filled with a motor lubricant and includes a stator, a primary rotor assembly configured for rotation within the stator and a primary shaft connected to the primary rotor assembly and to the primary driven component. The motor further includes an internal magnetic coupling assembly inside the stator. The internal magnetic coupling assembly includes a secondary rotor assembly and a secondary shaft. The secondary rotor assembly and the secondary shaft are isolated from the motor fluid.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: September 28, 2021
    Assignee: Baker Hughes ESP, Inc.
    Inventors: Robert Lee Marvel, Rene Jose Garcia
  • Patent number: 11101712
    Abstract: An electric motor, an end cap thereof and a manufacturing method of the end cap are provided. The end cap includes an insulating body and a filter circuit board mounted to the insulating body. The filter circuit board includes at least two power conductors for receiving an external power source, an insulating support frame integral with the at least two power conductors, and at least one filter element. One end of the at least one filter element is connected to a corresponding power conductor, and the other end of the at least one filter element is grounded.
    Type: Grant
    Filed: July 11, 2018
    Date of Patent: August 24, 2021
    Assignee: JOHNSON ELECTRIC INTERNATIONAL AG
    Inventors: Yukwai Yeung, Chingsik Lau, Dawei Zhou, Siukin Tam, Tao Fu