公开(公告)号：US20220209616A1

公开(公告)日：2022-06-30

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: H02K5/173 ,  F16C19/06 ,  F16C35/077

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：US20230353006A1

公开(公告)日：2023-11-02

申请号：US18348658

申请日：2023-07-07

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiong HU ,  Xueyu MEI ,  Zhengyi TANG ,  Senlin MA

IPC: H02K5/173 ,  H02K7/00 ,  H02K7/08 ,  B60L50/60

CPC classification number: H02K5/1732 ,  H02K7/003 ,  H02K7/083 ,  B60L50/60 ,  F16C2380/26 ,  F16C19/06

Abstract: A motor shaft, a motor, and an electric vehicle. The motor shaft includes a shaft body and an insulation coating. The shaft body includes a first mounting portion and a second mounting portion that are connected by fastening. A positioning step surface is disposed at an end that is of the first mounting portion and that is close to the second mounting portion. The first mounting portion is configured to mount a rotor. The second mounting portion is covered with the insulation coating, and the second mounting portion is configured to mount a bearing. A resistivity of the insulation coating is not less than 107 Ω·m. In this way, a possibility that a shaft current is generated when a shaft voltage discharges and breaks down a lubricating oil film in the bearing to form a path can be effectively reduced.

公开(公告)号：US20240159303A1

公开(公告)日：2024-05-16

申请号：US18502882

申请日：2023-11-06

Applicant: HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

Inventor： Jian HONG ,  Senlin MA ,  Jian CHEN

IPC: F16H48/40 ,  B60K17/16 ,  F16H37/08 ,  F16H48/08 ,  F16H57/023 ,  F16H57/04

CPC classification number: F16H48/40 ,  B60K17/165 ,  F16H37/082 ,  F16H48/08 ,  F16H57/023 ,  F16H57/0424 ,  F16H57/0483 ,  F16H2057/02052

Abstract: This application describes examples of a differential device, a powertrain, and a vehicle. In one example, the differential device includes a housing, three planetary gears, two side gears, and at least one window. Each of the three planetary gears is mounted on an inner wall of the housing through a pin shaft, the three planetary gears are disposed spaced from each other along a circumferential direction of the housing. The two side gears are disposed on two sides of the three planetary gears along the axial direction of the housing and meshed with the three planetary gears. The main reduction gear drives the housing to rotate around the axial direction of the housing, so that the three planetary gears drive the two side gears to drive two drive shafts respectively.