An electric vehicle driving device, system and electric vehicle
A technology of electric vehicles and driving devices, applied in the direction of electric power devices, power devices, control devices, etc., can solve the problems of high power loss, low wheel control flexibility, easy instability, etc., and achieve the effect of stable power supply
Active Publication Date: 2021-08-17
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology
[0003] The purpose of the embodiments of the present application is to provide an electric vehicle driving device, system and electric vehicle to improve the problems of "current electric vehicles have high power loss, are prone to instability when driving, and have low flexibility in wheel control"
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[0026] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
[0027] At present, electric vehicles mainly adopt a centralized drive structure. The structure is mainly composed of motors, reducers, differentials, transmission shafts and other components, and a motor cooperates with the reducer, differential and transmission shafts to drive multiple wheels. In the process of power transmission, electric vehicles pass through multiple devices such as reducers, differentials, and transmission shafts, and the gear meshing between devices will produce a certain amount of power loss. And at present, the motor is often installed inside the electric vehicle, so that the center of gravity of the electric vehicle is high, and the electric vehicle is easy to lose stability when driving. In addition, electric vehicles adopt a centralized drive structure, which can only dr...
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This application provides an electric vehicle driving device, system and electric vehicle. The electric vehicle driving device is arranged on the chassis of the electric vehicle; the electric vehicle also includes a plurality of wheels arranged on the chassis; the electric vehicle driving device includes: a plurality of motors, the number of the motors is related to the number of the motors. The number of the wheels is equal, and a reducer is mechanically connected to each of the motors, and each of the reducers is also mechanically connected to one of the wheels; wherein each of the motors is used to pass through one of the reducers and then Drives one of said wheels. Compared with the existing technology, there is no need to set up a differential, which reduces the power loss between devices, and the use of a distributed drive structure can make the drive of each wheel more flexible. In addition, the electric vehicle driving device is installed on the chassis of the electric vehicle, which lowers the center of gravity of the electric vehicle and improves the driving stability of the entire vehicle.
Description
technical field [0001] The present application relates to the field of electric vehicles, in particular, to an electric vehicle driving device, a system and an electric vehicle. Background technique [0002] With the development of society and the advancement of science and technology, the use of automobiles continues to increase, and the exhaust emissions of automobiles have seriously affected people's lives. The emergence of electric vehicles has become a solution to the emission problem. At present, electric vehicles are mainly composed of motors, reducers, differentials, transmission shafts and other components. A motor cooperates with the reducer, differential and transmission shafts to drive the four wheels. In the process of power transmission, electric vehicles pass through multiple devices such as reducers, differentials, and transmission shafts, and the gear meshing between devices will produce a certain amount of power loss. And at present, the motor is often in...
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IPC IPC(8): B60K1/02B60K17/04B60R16/023
CPCB60K1/02B60K17/043B60R16/0231
Inventor 杨超王伟达王伟张渊博项昌乐
Owner BEIJING INSTITUTE OF TECHNOLOGYGY