公开(公告)号：US12113421B2

公开(公告)日：2024-10-08

申请号：US17457390

申请日：2021-12-02

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ke Wang ,  Shenghai Jiang ,  Lang Lv ,  Zhiqi Wei ,  Guojie Xu ,  Senlin Ma ,  Wenwu Ma

IPC: F16C19/06 ,  F16C35/077 ,  H02K5/173 ,  B60K1/00

CPC classification number: H02K5/1732 ,  F16C19/06 ,  F16C35/077 ,  B60K2001/001

Abstract: This application describes a motor that includes a housing, an output shaft, a conductive bearing, and a conductive component. The output shaft is disposed in the housing. A positioning hole is disposed on an end face of a first end of the output shaft, and the positioning hole is disposed coaxially with the output shaft. The conductive bearing is disposed in the positioning hole, and includes an inner ring, and an outer ring that is fixedly connected to the output shaft. One end of the conductive component is fixedly connected to the inner ring of the conductive bearing, and the other end is connected to the housing. In this application, the motor can output, by using the conductive bearing and the conductive component, charges accumulated in the output shaft, to eliminate a generated common-mode voltage.

公开(公告)号：US11888350B2

公开(公告)日：2024-01-30

申请号：US17680616

申请日：2022-02-25

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Ji Pang ,  Di Li ,  Lang Lv ,  Chao Cao

IPC: H02K1/16 ,  B60K1/00 ,  H02K15/02

CPC classification number: H02K1/165 ,  B60K1/00 ,  H02K15/024

Abstract: Embodiments of this application disclose a stator, a stator manufacturing method, a motor, and an electric vehicle. The stator includes: a stator tooth part, where a plurality of stator tooth parts are arranged at intervals along a circumferential direction; and a stator yoke part, where the stator yoke part is disposed along a circumferential direction of the stator tooth part, and the circumferential direction is a circumferential direction around a central axis of the stator; where the stator tooth part and the stator yoke part are integrally formed by an oriented silicon steel sheet, and a grain direction of the formed oriented silicon steel sheet points to the central axis of the stator along a radial direction. Therefore, the stator tooth part and the stator yoke part are formed by using one material, and there is no need to splice two materials, thereby reducing process costs.

公开(公告)号：US11863029B2

公开(公告)日：2024-01-02

申请号：US17645152

申请日：2021-12-20

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Zhiqi Wei ,  Chao Cao ,  Lang Lv ,  Wenwu Ma ,  Ke Wang

IPC: H02K11/40 ,  H02K5/15 ,  H02K5/173 ,  H02K7/00

CPC classification number: H02K11/40 ,  H02K5/15 ,  H02K5/1732 ,  H02K7/003

Abstract: Embodiments of this application provide a motor rotor, a motor, and a vehicle. A conductive pillar passes through an inner ring of a conductive bearing, an outer wall of the conductive pillar interference fits with the inner ring of the conductive bearing, and an end of the conductive pillar is grounded. In this way, it is ensured that a shaft current on a rotor body is discharged by using the conductive bearing and the conductive pillar, to prevent a main bearing of the motor rotor from being electrically corroded by the shaft current. In addition, the conductive bearing is sleeved on the grounded conductive pillar, so that the inner ring of the conductive bearing can interference fit with the outer wall of the conductive pillar.