Huawei Digital Power Technologies Co., Ltd.

Zhengyi Tang

Huan Wang

Hu Zhong

Xueyu Mei

Jinhua Chen

Xiong Hu

Wenwu Ma

Senlin Ma

Hai Guo

Tianmin Shen

Jingzhou Wei

Bayaer Eerhemu

Yanzhong Wang

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 10Ω·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.

Motor shaft, motor, and electric vehicle

A gear shifting apparatus in a new energy vehicle includes a primary power transmission unit, a secondary power transmission unit, an intermediate shaft, an intermediate shaft gear, a first clutch unit, a second clutch unit, and a third clutch unit. The intermediate shaft gear is fixedly sleeved on the intermediate shaft, and the first clutch unit is disposed between the intermediate shaft and the primary power transmission unit. The second clutch unit is disposed between the intermediate shaft and the secondary power transmission unit. The third clutch unit is disposed between the primary power transmission unit and the intermediate shaft gear.

Gear shifting apparatus, electric drive system, and new energy vehicle

Growing community of inventors

Shenzhen, China

Zhengyi Tang