公开(公告)号：US20240235297A9

公开(公告)日：2024-07-11

申请号：US18489644

申请日：2023-10-18

Applicant: Nidec Motor Corporation

Inventor： Bruce Ley ,  Michael Coles ,  Hunter Gill ,  Mike Alivero ,  Joe Engle ,  Kyle Chesnut ,  Tillian Jones ,  Jeremy Beck

IPC: H02K1/2793

CPC classification number: H02K1/2793 ,  H02K2201/03

Abstract: An electric motor includes a stator and a rotor rotatable relative to the stator. The rotor includes an axial shaft, a disc projecting radially from the shaft, and a ring magnet affixed to the disc. The shaft and the disc are integrally formed as a unitary body.

公开(公告)号：US12003166B2

公开(公告)日：2024-06-04

申请号：US17756268

申请日：2020-06-04

Applicant: XINJIANG GOLDWIND SCIENCE & TECHNOLOGY CO., LTD.

Inventor： Likun Liu ,  Yanhui Li ,  Liang Peng

IPC: H02K7/12 ,  F03D1/06 ,  G08B21/18 ,  H02K7/08 ,  H02K7/18 ,  H02K11/21

CPC classification number: H02K7/12 ,  F03D1/06 ,  G08B21/182 ,  H02K7/085 ,  H02K7/183 ,  H02K11/21 ,  H02K2201/03

Abstract: Disclosed is a device with a stator and a rotor, the device comprising: a stator; a rotor, wherein an air gap is provided between the rotor and the stator; and an air gap protection device fixedly connected to the stator, wherein the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor, and the air gap protection device rotates relative to the rotor when in contact with the rotor. By arranging the air gap protection device fixedly connected to the stator, the air gap protection device can rotate relative to the rotor when in contact with the rotor, and the radial distance between the air gap protection device and the rotor is less than the radial distance between the stator and the rotor.

公开(公告)号：US20240178732A1

公开(公告)日：2024-05-30

申请号：US18159793

申请日：2023-01-26

Applicant: GM Global Technology Operations LLC

Inventor： Jian Yao ,  Alan G. Holmes ,  Chengwu Duan ,  Vincent Fedida ,  Denghao Fan

IPC: H02K21/02 ,  H02K1/27

CPC classification number: H02K21/026 ,  H02K1/27 ,  H02K2201/03 ,  H02K2213/09

Abstract: An axial flux motor may include a stator, a rotor including a rotor frame and having a rotational axis, an axial air gap separating the stator and the rotor, the axial air gap corresponding to an axial position of the rotor frame, and at least one hydraulic actuator including a variable volume hydraulic fluid chamber defined within the rotor frame, wherein a change in the volume of the variable volume hydraulic fluid chamber causes a change in the axial position of the rotor frame and a corresponding change in the axial air gap separating the stator and the rotor.

公开(公告)号：US11984763B2

公开(公告)日：2024-05-14

申请号：US16816335

申请日：2020-03-12

Applicant: Regal Beloit America, Inc. ,  Regal Beloit Australia Pty Ltd

Inventor： Mark Thiele ,  Greg Heins ,  Subhash Brahmavar ,  Steve Long ,  Lester Benjamin Manz ,  Kerry Shelton

IPC: H02K1/27 ,  H02K1/14 ,  H02K1/276 ,  H02K15/03 ,  H02K21/16

CPC classification number: H02K1/276 ,  H02K1/146 ,  H02K15/03 ,  H02K21/16 ,  H02K2201/03

Abstract: A permanent magnet rotor core includes a plurality of rotor poles circumferentially-spaced about a central axis and including a first rotor pole and an adjacent second rotor pole that each include an outer wall, and wherein the rotor core includes a rotor diameter. The rotor core also includes a plurality of radial apertures alternately-spaced with the plurality of rotor poles. The rotor core also includes a first protrusion extending from the first rotor pole into a first radial aperture of the plurality of radial apertures positioned between the first rotor pole and the second rotor pole. The rotor core further includes a second protrusion extending from the second rotor pole into the first radial aperture such that a circumferential opening is defined between the first protrusion and the second protrusion. The opening extends a first length of between approximately 0.052% and approximately 0.058% of the rotor diameter.

公开(公告)号：US20240146155A1

公开(公告)日：2024-05-02

申请号：US18494691

申请日：2023-10-25

Applicant: AUDI AG

Inventor： Ivo GREITER

IPC: H02K9/197 ,  H02K7/116 ,  H02K9/06

CPC classification number: H02K9/197 ,  H02K7/116 ,  H02K9/06 ,  H02K2201/03

Abstract: A motor unit is provided having an electric motor, which is arranged in a housing, wherein the motor unit comprises a lubricant circuit, which cools and lubricates the electric motor, wherein the electric motor comprises a stator and a rotor, which is mounted rotatably in the stator, being connected fixed to the housing, while between the stator and the rotor there is a rotor gap. The motor unit further comprises a lubricant pump, which is fluidically connected to the stator housing, and a flow generating unit, which draws in air from the housing and blows the air into the rotor gap in order to remove lubricant from the rotor gap and reduce the internal friction in the electric motor. A method is also provided for reducing the internal friction in a motor unit.

公开(公告)号：US11962217B2

公开(公告)日：2024-04-16

申请号：US17306589

申请日：2021-05-03

Applicant: Nidec Motor Cororation

Inventor： Steven R. Palmer ,  Chetan O. Modi ,  Chuck Roessler ,  John H. Hussey

IPC: H02K5/16 ,  H02K5/173 ,  H02K7/00 ,  H02K7/08

CPC classification number: H02K5/1732 ,  H02K7/003 ,  H02K7/083 ,  H02K2201/03

Abstract: An electric motor includes a stator assembly and a rotor assembly. The rotor assembly includes a rotor shaft that is rotatable relative to the stator assembly about a rotation axis. The motor also includes an endshield, a bearing assembly rotatably supporting the rotor shaft on the endshield, a shaft ground assembly electrically coupled to the rotor shaft, and a bearing lockplate. The bearing lockplate is fixedly coupled to the endshield. The shaft ground assembly is supported by the bearing lockplate on the endshield.

公开(公告)号：US20240120818A1

公开(公告)日：2024-04-11

申请号：US18476295

申请日：2023-09-27

Applicant: Rainer B. Meinke

Inventor： Rainer B. Meinke

IPC: H02K16/02 ,  H02K1/276 ,  H02K1/279 ,  H02K21/02

CPC classification number: H02K16/02 ,  H02K1/2766 ,  H02K1/279 ,  H02K21/028 ,  H02K2201/03

Abstract: A magnetic array for use in a synchronous electrical machine or a magnetic gear box, comprising a plurality of discrete magnetic segments. When individual ones of the segments are spaced away from influence of ferromagnetic material, such as prior to placement in the array, each includes a pole having the same maximum field strength. Each segment is positioned in a sequence along a circumferential array with changes in field orientation by which the field of each segment is spatially rotated relative to the field of a next segment in the sequence. Each segment is positioned in sufficient proximity to the next segment in the sequence to enable the fields to interact with one another and effect flux channeling.

公开(公告)号：US20240088732A1

公开(公告)日：2024-03-14

申请号：US18512091

申请日：2023-11-17

Applicant: Beijing Chuangxing Yangguang Technology Development Co., Ltd.

Inventor： Ranjun LI

IPC: H02K1/2786 ,  H02K5/02 ,  H02K9/19

CPC classification number: H02K1/2786 ,  H02K5/02 ,  H02K9/19 ,  H02K2201/03

Abstract: A composite material permanent magnet synchronous electric motor includes a composite material shell; a permanent magnet outer rotor is disposed in the composite material shell; a stator is disposed in the permanent magnet outer rotor in a penetrating manner; and air gaps are disposed in gaps between the stator and the composite material shell and between the stator and the permanent magnet outer rotor in a one-to-one correspondence manner. The composite material permanent magnet synchronous motor improves an output torque of a motor with a same power, improves a power-to-weight ratio of the electric motor, and improves a power density; and by means of using composite materials, weights of the permanent magnet synchronous motor are reduced, and a mechanical strength thereof is improved.

公开(公告)号：US11888353B2

公开(公告)日：2024-01-30

申请号：US17042545

申请日：2018-04-10

Applicant: Mitsubishi Electric Corporation

Inventor： Atsushi Ishikawa

IPC: H02K1/27 ,  F25B1/04 ,  H02K21/14 ,  H02K1/276 ,  H02K1/278

CPC classification number: H02K1/2766 ,  F25B1/04 ,  H02K1/278 ,  H02K21/14 ,  H02K2201/03 ,  H02K2213/03

Abstract: A motor includes a rotor rotatable about a rotation axis, and a stator surrounding the rotor so as to form an air gap between the stator and the rotor. The rotor has a rotor core having a magnet insertion hole and a rare earth magnet provided in the magnet insertion hole. The rotor core has a plurality of slits on an outer side of the magnet insertion hole in a radial direction about the rotation axis. Each of the plurality of slits has a length in the radial direction which is longer than a length in a circumferential direction about the rotation axis. The plurality of slits have a uniform minimum distance to the magnet insertion hole. When the minimum distance is expressed as T and the air gap is expressed as G, 2.75≤T/G≤5.25 is satisfied.

公开(公告)号：US11881751B2

公开(公告)日：2024-01-23

申请号：US17075341

申请日：2020-10-20

Applicant: INFINITUM ELECTRIC, INC.

Inventor： Bernhard L. Schuler ,  Rich Lee ,  Jorgen Rasmussen

IPC: H02K3/26 ,  H02K3/47 ,  H02K1/18 ,  H02K21/24 ,  H02K3/28 ,  H02K3/52 ,  H02K1/2795 ,  H02K1/12 ,  H02K1/32 ,  H02K9/12 ,  H02K16/00 ,  H02P31/00 ,  H02K1/276 ,  H02K3/12 ,  H02K15/03 ,  H02K35/02

CPC classification number: H02K3/26 ,  H02K1/12 ,  H02K1/182 ,  H02K1/2773 ,  H02K1/2795 ,  H02K1/32 ,  H02K3/12 ,  H02K3/28 ,  H02K3/47 ,  H02K3/521 ,  H02K9/12 ,  H02K15/03 ,  H02K16/00 ,  H02K21/24 ,  H02K35/02 ,  H02P31/00 ,  H02K2201/03 ,  H02K2203/03 ,  H02K2211/03 ,  Y02B10/30 ,  Y02E10/72

Abstract: An axial field rotary energy device can include a rotor comprising an axis of rotation and a magnet. In addition, a stator can be coaxial with the rotor. The stator can include a plurality of stator segments that are coupled together about the axis. Each stator segment can include a printed circuit board (PCB) having a PCB layer comprising a coil. Each stator segment also can include only one electrical phase. The stator itself can include one or more electrical phases.