Electronic differential coupling four-wheel pure electrically-driven electric car

Abstract

The invention discloses an electronic differential coupling four-wheel pure electrically-driven electric car. The independent suspension design is adopted by a front axle and a rear axle, and the front axle and the rear axle are divided into two half drive axles correspondingly. Each half axle adopts an independent disc type motor and a planetary reducer for driving car wheels to rotate. A complete car ECU coordinates actions of disc type motor controllers by receiving information collected by sensors on the car, and the corresponding disc type motors are controlled through the four disc type motor controllers correspondingly. The advantages that the disc type motors and the planetary reducers are small in axial size and large in output torque are fully used, and the disc type motors and the planetary reducers are arranged on the left half drive axles and the right half drive axles, so that the mass of parts under suspension springs is better lowered, especially the mass of tyre parts is lowered. Compared with the combination mode of a tradition motor and a conventional step parallel shaft reducer, the chassis space can be effectively saved, and a battery pack with the larger capacity can be arranged conveniently.

Description

technical field [0001] The invention relates to a four-wheel pure electric drive electric vehicle, in particular to an electronic differential coupling four-wheel pure electric drive electric vehicle. Background technique [0002] The driving power applied in the field of pure electric and hybrid vehicles mostly adopts the combination of traditional motor and conventional stepped parallel shaft reducer, and the driving motor is mostly AC permanent magnet synchronous motor, DC motor or AC asynchronous motor with radial flux. The traditional radial flux motor has a large axial installation size, low power density and low efficiency, which is not conducive to the application in the field of electric vehicles with strict space requirements and high efficiency requirements. The reducer mostly adopts parallel shaft multi-stage reducer, which causes too much space occupied in the radial direction and affects the space for battery arrangement. Contents of the invention [0003] I...

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Problems solved by technology

[0002] The driving power applied in the field of pure electric and hybrid vehicles mostly adopts the combination of traditional motor and conventional stepped parallel shaft reducer, and the driving motor is mostly AC permanent magnet synchronous motor, DC motor or AC asynchronous motor with radial flux. The traditional radial flux motor has a large axial in

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