公开(公告)号：US12170462B2

公开(公告)日：2024-12-17

申请号：US17397263

申请日：2021-08-09

Applicant: DENSO CORPORATION

Inventor： Yuki Takahashi

IPC: H02K1/279 ,  H02K1/278 ,  H02K1/28 ,  H02K7/00 ,  H02K11/33 ,  H02K21/22 ,  H02P27/08 ,  B60K7/00 ,  B60L53/20

Abstract: A rotating electrical machine includes a magnetic field-producing unit and a magnetic carrier. The magnetic field-producing unit includes a magnet unit equipped with magnetic poles arranged to have magnetic polarities. The rotating electrical machine includes an armature equipped with a multi-phase winding. The magnet unit is mounted to a stator-side peripheral surface of the magnet carrier. The rotating electrical machine incudes a cylindrical restriction member mounted on the stator-side peripheral surface of the magnet unit. The restriction member is configured to restrict radial movement of the magnet unit relative to the magnet carrier. The restriction member has a stacked configuration stacked in an axial direction of the rotor.

公开(公告)号：US11962193B2

公开(公告)日：2024-04-16

申请号：US17022581

申请日：2020-09-16

Applicant: RLT HOLDINGS, LLC

Inventor： Edward Curt ,  Kyle Meier ,  Jerry Yu ,  Samuel Rodriguez

IPC: H02K1/278 ,  F04B17/03 ,  H02K1/279 ,  H02K1/27915 ,  H02K5/128 ,  H02K5/132

CPC classification number: H02K1/278 ,  F04B17/03 ,  H02K1/27915 ,  H02K5/1285 ,  H02K5/132 ,  H02K1/279

Abstract: Embodiments disclosed herein describe methods for improved permanent magnet motor rotor systems for submersible electric motors. The improved rotor system includes a single piece of material shaft with surface mounted permanent magnets. The single piece of material shaft minimizes the number of shaft bearings and locates the bearings outside of the stator windings.

公开(公告)号：US11979063B2

公开(公告)日：2024-05-07

申请号：US16915238

申请日：2020-06-29

Applicant: DENSO CORPORATION

Inventor： Yuki Takahashi

IPC: H02K1/27 ,  H02K1/16 ,  H02K1/18 ,  H02K1/276 ,  H02K1/2781 ,  H02K1/279 ,  H02K1/30 ,  H02K5/20 ,  H02K21/22 ,  H02P27/06

CPC classification number: H02K1/279 ,  H02K1/165 ,  H02K1/18 ,  H02K1/2773 ,  H02K1/2781 ,  H02K1/30 ,  H02K5/20 ,  H02K21/22 ,  H02P27/06 ,  H02K5/203

Abstract: A rotating electric machine includes a field system, which includes a magnet section, and an armature. The magnet section includes a plurality of magnets that are arranged at predetermined intervals and in alignment with each other in a circumferential direction. The magnets have easy axes of magnetization oriented such that at locations closer to a d-axis, the directions of the easy axes of magnetization are more parallel to the d-axis than at locations closer to a q-axis. In the magnets, magnet magnetic paths are formed along the easy axes of magnetization. The field system further includes a field-system core that is formed of a soft-magnetic material. The field-system core has protrusions protruding to the armature side. Each of the protrusions is located closer to the q-axis than to the d-axis in the circumferential direction. Circumferential end surfaces of the protrusions respectively abut circumferential end surfaces of the magnets.

公开(公告)号：US20220085673A1

公开(公告)日：2022-03-17

申请号：US17423847

申请日：2019-12-27

Applicant: Johnson Electric International AG

Inventor： Tao ZHANG ,  Junjie CHU ,  Min LI ,  Quantong MA

IPC: H02K1/279 ,  H02K21/22 ,  A01D69/02

Abstract: The invention discloses a magnetic core, which includes a ring-shaped body portion and a plurality of magnetic pole portions connected to the body portion. The magnetic pole portions are arranged on an inner surface of the body portion in a circumferential direction. The body portion and the magnetic pole portions are connected to each other. Each of the magnetic pole portions is triangular and includes a top end and two free ends. The top end is connected to the body portion. Two side surfaces on both sides of the top end of the magnetic pole portion are respectively opposite to and spaced apart from an inner surface of the body portion to form a first receiving groove and a second receiving groove, the first receiving groove and the second receiving groove are used for receiving magnets, and the first receiving groove and the second receiving groove have open ends in an inner surface of the magnetic core. The magnetic core of the present invention has a significant magnetization effect and helps to increase the power density of the motor.

公开(公告)号：US20240235296A1

公开(公告)日：2024-07-11

申请号：US18611101

申请日：2024-03-20

Applicant: RLT Holdings, LLC

Inventor： Edward Curt ,  Kyle Meier ,  Jerry Yu ,  Samuel Rodriguez

IPC: H02K1/278 ,  F04B17/03 ,  H02K1/279 ,  H02K1/27915 ,  H02K5/128 ,  H02K5/132

CPC classification number: H02K1/278 ,  F04B17/03 ,  H02K1/27915 ,  H02K5/1285 ,  H02K5/132 ,  H02K1/279

Abstract: Embodiments disclosed herein describe methods for improved permanent magnet motor rotor systems for submersible electric motors. The improved rotor system includes a single piece of material shaft with surface mounted permanent magnets. The single piece of material shaft minimizes the number of shaft bearings and locates the bearings outside of the stator windings.

公开(公告)号：US11784522B2

公开(公告)日：2023-10-10

申请号：US17666506

申请日：2022-02-07

Applicant: NIDEC CORPORATION

Inventor： Tomoya Ueda ,  Toshiyuki Sasaki ,  Yabo Hu

IPC: H02K1/00 ,  H02K1/276 ,  H02K1/279

CPC classification number: H02K1/2773 ,  H02K1/279 ,  H02K2213/03

Abstract: A rotor includes: a shaft; a tubular rotor core; and a plurality of magnets. The shaft extends along a center axis. The rotor core surrounds the shaft. The plurality of magnets is disposed outside the rotor core in a radial direction and is aligned in a circumferential direction. A plurality of first recessed portions recessed outward in the radial direction is aligned in the circumferential direction in an inner surface of the rotor core in the radial direction. Each of the first recessed portions overlaps each of the magnets in the radial direction.

公开(公告)号：US20220255378A1

公开(公告)日：2022-08-11

申请号：US17666506

申请日：2022-02-07

Applicant: NIDEC CORPORATION

Inventor： Tomoya UEDA ,  Toshiyuki SASAKI ,  Yabo HU

IPC: H02K1/276 ,  H02K1/279

Abstract: A rotor includes: a shaft; a tubular rotor core; and a plurality of magnets. The shaft extends along a center axis. The rotor core surrounds the shaft. The plurality of magnets is disposed outside the rotor core in a radial direction and is aligned in a circumferential direction. A plurality of first recessed portions recessed outward in the radial direction is aligned in the circumferential direction in an inner surface of the rotor core in the radial direction. Each of the first recessed portions overlaps each of the magnets in the radial direction.

公开(公告)号：US11316390B2

公开(公告)日：2022-04-26

申请号：US16781084

申请日：2020-02-04

Applicant: Yilmaz Sozer ,  Anik Chowdhury ,  Shuvajit Das ,  Naoto Saito ,  Subrata Saha ,  Takamasa Takeuchi ,  Yasunobu Shiotsuki ,  Teppei Tsuda

Inventor： Yilmaz Sozer ,  Anik Chowdhury ,  Shuvajit Das ,  Naoto Saito ,  Subrata Saha ,  Takamasa Takeuchi ,  Yasunobu Shiotsuki ,  Teppei Tsuda

IPC: H02K1/2789 ,  H02K1/279 ,  H02K1/2793 ,  H02K1/274 ,  H02K21/16

Abstract: A transverse flux machine includes a stator assembly consisting of a plurality of shaped cores, each having a base with a plurality of legs with a corresponding gap between each leg and each leg having a winding. A rotor assembly is positioned adjacent the stator assembly and includes a rotor disc, and a rotor ring with a plurality of rotor poles interleaved with a plurality of interpoles. The plurality of rotor poles and plurality of interpoles are radially disposed around the rotor disc. The plurality of rotor poles include a plurality of focused rotor poles interleaved with a plurality of diffused rotor poles.

公开(公告)号：US20250018996A1

公开(公告)日：2025-01-16

申请号：US18765409

申请日：2024-07-08

Applicant: ZF Automotive UK Limited

Inventor： David Julian Moule

IPC: B62D5/04 ,  H02K1/14 ,  H02K1/279

Abstract: A motor includes a stator and a rotor. The stator carries a plurality of phase windings and the rotor carries a plurality of magnet poles and is connected to a shaft. The stator has a ferromagnetic material defining a yoke and a plurality of teeth and further includes at least one band of electrically conductive material that encompasses at least a portion of one of the teeth or encompasses at least a portion of the yoke in a region between adjacent teeth and is in direct contact with the tooth. The band provides an electrical path between the band and the portion of the tooth or yoke. The band wraps around upper and lower end regions of the portion of the tooth or yoke and extends axially down the opposing side faces of the tooth or yoke. The band is isolated from any external source of motor drive current.

公开(公告)号：US12051945B2

公开(公告)日：2024-07-30

申请号：US18123714

申请日：2023-03-20

Applicant: DAIKIN INDUSTRIES, LTD.

Inventor： Yoshinori Takayama ,  Norimasa Matsushita

IPC: H02K1/2791 ,  H02K1/27 ,  H02K1/2789 ,  H02K1/279 ,  H02K15/03 ,  F24F1/0029 ,  H02K7/14

CPC classification number: H02K1/2791 ,  H02K1/27 ,  H02K1/2789 ,  H02K1/279 ,  H02K15/03 ,  F24F1/0029 ,  H02K7/14

Abstract: A motor includes a rotor molded by resin casting, and a stator disposed inside the rotor. The rotor includes a cylindrical portion in which a plurality of magnets are arranged side by side in a circumferential direction. The magnets are exposed on a side of an open end as one end of the cylindrical portion in an axial direction of the cylindrical portion. The cylindrical portion includes an inner resin located inside each of the magnets in a radial direction of the cylindrical portion. The inner resin includes a first resin portion, and a second resin portion closer to the open end than the first resin portion in the axial direction. A sectional area of the second resin portion perpendicular to the axial direction is smaller than a sectional area of the first resin portion perpendicular to the axial direction.