Multi-link suspension wheel rim drive system of wheel hub motor direct-drive electric vehicle

Abstract

The invention discloses a multi-link suspension wheel rim drive system of a wheel hub motor direct-drive electric vehicle. The multi-link suspension wheel rim drive system comprises a tire, a wheel hub and a wheel hub motor, wherein the wheel hub motor is connected with the wheel hub through wheel hub bolts. A wheel hub motor shaft, a steering knuckle, an upper rear control arm, an upper front control arm, a lower front control arm, a lower rear control arm and a shock absorber are included, wherein the middle of the steering knuckle is connected with the wheel hub motor shaft through a shaft sleeve assembly; the top of the steering knuckle is connected with the upper front control arm and the upper rear control arm in a hinged mode; the bottom of the steering knuckle is connected with the upper rear control arm and the lower rear control arm in a hinged mode; the upper front control arm, the upper rear control arm, the lower front control arm and the lower rear control arm are connected with an auxiliary vehicle frame in a hinged mode; and the top end of the shock absorber is connected with the auxiliary vehicle frame in a hinged mode through an upper U-joint fork, and the bottom end of the shock absorber is connected with the lower front control arm in a hinged mode through a lower U-joint fork. The multi-link suspension wheel rim drive system not only can meet the power requirement of the electric vehicle, but also can reduce the weight of the whole vehicle and improve the power transmission efficiency, and has the effects of simple structure, good traveling stability and flexible controllabitity.

Description

technical field [0001] The invention belongs to the field of chassis design and manufacture of electric vehicles, and in particular relates to a multi-link suspension wheel side drive system in which a hub motor directly drives an electric vehicle. Background technique [0002] Electric vehicles adopt the form of four-wheel independent drive of wheel hub motors, which can omit mechanical components including reducers, differentials and drive shafts, greatly reducing mechanical losses, saving space in the car, achieving lightweight, and reducing electric car curb quality. [0003] The driving force of the hub motor direct drive electric vehicle can be directly and independently controlled, and the dynamic performance is better. However, the introduction of the hub motor also affects the structure and performance of the suspension system and braking system of the electric vehicle. The suspension system composed of in-wheel motors integrates the functions of driving, guiding, ...

AI Technical Summary

Problems solved by technology

In the existing technology, the design of the electric vehicle drive system mainly focuses on the drive mode of the wheel motor, which separates the motor from the hub, and most of them are driven by the rear wheel. The suspension system adopts the direct drive of the hub motor and the four-wheel independent drive mode. less

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