公开(公告)号：US20230120603A1

公开(公告)日：2023-04-20

申请号：US18145270

申请日：2022-12-22

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu ZHONG ,  Xiong HU ,  Zhengyi TANG ,  Ke WANG

IPC: F16H3/091 ,  B60K1/00 ,  B60K17/08 ,  B60K17/02 ,  F16H37/08

Abstract: A transmission and a vehicle. A first clutch of the transmission is a bidirectional clutch. When the first clutch is disposed on an input shaft, the first clutch is located between a first-stage input gear and a second-stage input gear. When the first clutch is disposed on a countershaft, the first clutch is located between a first-stage output gear and a second-stage output gear. Alternatively, the transmission includes the first clutch and a second clutch that are disposed on the input shaft or the countershaft. A quantity of components in the transmission is reduced, and a structure of the transmission is simplified, to reduce costs of the transmission, and reduce production costs of the vehicle to some extent.

公开(公告)号：US20230272844A1

公开(公告)日：2023-08-31

申请号：US18314324

申请日：2023-05-09

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu ZHONG ,  Xiong HU ,  Huan WANG

IPC: F16H3/091 ,  F16H61/00 ,  F16H63/08

CPC classification number: F16H3/091 ,  F16H61/0059 ,  F16H63/08 ,  F16H2200/0021 ,  F16H2057/02043

Abstract: A two-speed transmission gearbox of an electric vehicle is provided, including an input shaft, a countershaft, a first clutch, and a second clutch. A first-gear input tooth and a second-gear input tooth are disposed on the input shaft. A first-gear output tooth and a second-gear output tooth are disposed on the countershaft, the first-gear output tooth can be in constant mesh with the first-gear input tooth, and the second-gear output tooth can be in constant mesh with the second-gear input tooth. The first clutch is disposed on the countershaft and connects the first-gear output tooth to the countershaft. The second clutch is disposed on the countershaft and connects the second-gear output tooth to the countershaft. Therefore, a risk of damage caused by the clutch due to a high rotation speed is reduced, response time and drag torque of the clutch are reduced.

公开(公告)号：US20220379683A1

公开(公告)日：2022-12-01

申请号：US17884939

申请日：2022-08-10

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Xiong HU ,  Zhengyi TANG ,  Hu ZHONG ,  Xueyu MEI ,  Huan WANG ,  Yanzhong WANG

IPC: B60H1/00 ,  B60K17/02 ,  B60K17/12 ,  B60K17/22

Abstract: An electric vehicle drive system and an electric vehicle. The electric vehicle drive system includes a powertrain and a transmission system. The powertrain includes a first power output mechanism and a second power output mechanism. One end of the transmission system is connected to the first power output mechanism, and the other end is configured to be connected to an air-conditioner compressor. The second power output mechanism is configured to drive the electric vehicle to travel. The powertrain in the electric vehicle drive system can also drive the air-conditioner compressor when driving the electric vehicle, to reduce a quantity of components inside the electric vehicle, thereby reducing space occupancy and costs.

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.