公开(公告)号：US20220307572A1

公开(公告)日：2022-09-29

申请号：US17706299

申请日：2022-03-28

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu ZHONG ,  Xueyu MEI ,  Huan WANG

IPC: F16H3/091 ,  F16H57/00 ,  B60K17/08 ,  F16H3/10

Abstract: This application provides a two-speed transmission system. The two-speed transmission system includes a first fixed gear fastened on a first shaft, a first floating gear connected to a second shaft through rotation, a first connection mechanism, and a one-way clutch. The first connection mechanism is configured to implement connection or disconnection between the first floating gear and the second shaft. The one-way clutch is located between the first floating gear and the first connection mechanism. An inner surface of the one-way clutch is connected to the first floating gear. An outer surface of the one-way clutch abuts against the first connection mechanism. The outer surface of the one-way clutch is connected to the first connection mechanism. An acting force of the outer surface directly acts on the first connection mechanism instead of a tooth surface of the first floating gear, to reduce an impact on accuracy of gear transmission.

公开(公告)号：US20220221054A1

公开(公告)日：2022-07-14

申请号：US17710637

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu ZHONG ,  Xueyu MEI ,  Huan WANG

IPC: F16H63/30 ,  F16H63/32 ,  F16H57/023 ,  F16H55/17

Abstract: This application provides a gear shifting mechanism, a gearbox, and a powertrain. The gear shifting mechanism includes a gear, a gear hub, a one-way clutch, and a sliding apparatus. The gear has a first convex wall and a second convex wall that are disposed around a shaft hole. A first toothed structure is disposed at an end of the first convex wall, and a diameter of the second convex wall is less than that of the first convex wall. The gear hub is sleeved on the second convex wall. The one-way clutch is disposed between the gear hub and the second convex wall. The sliding apparatus is sleeved on the gear hub, and the sliding apparatus is capable of sliding in a direction toward or away from the gear. The gear shifting mechanism can improve stability for transmitting a gear shifting power, thereby improving driving performance of an electric vehicle.

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：US20220221053A1

公开(公告)日：2022-07-14

申请号：US17710713

申请日：2022-03-31

Applicant: Huawei Digital Power Technologies Co., Ltd.

Inventor： Hu ZHONG ,  Xueyu MEI ,  Huan WANG

IPC: F16H63/30 ,  F16H57/023 ,  F16H3/44

Abstract: This application provides a gear shifting mechanism, a two-speed gearbox, and a vehicle. The gear shifting mechanism includes a drive motor, a shifting drum, and a first shifting mechanism. The first shifting mechanism includes a first shifting fork, an inner shaft, an outer hub, a first coupling pin, and an elastic component. The elastic component is sleeved on the inner shaft and is located between the inner shaft and the outer hub. There are a first limiting portion and a second limiting portion between the outer hub and the inner shaft. The elastic component is located between the first limiting portion and the second limiting portion. The first limiting portion is connected to one of the outer hub and the inner shaft, and the second limiting portion is connected to the other of the outer hub and the inner shaft.