Electric vehicle drive chassis

Abstract

The invention relates to an electric motor car driving chassis, which comprises a hub motor, a brake, a controller, a storage battery, a steering shaft, a steering shaft braking electromagnetic friction lock and a steering shaft braking steering friction lock. When an electric motor car moves in the rectilinear direction, the locking moment of the steering shaft braking electromagnetic friction lock is just balanced with the moment of the driving force of the wheel to the ground formed on the steering shaft, when the electric motor car is steered, the friction locking moment of the steering shaft is reduced, and when the electric motor car is braked, the locking moment of the steering shaft is increased. Compared with the prior art, the electric motor car driving chassis can conveniently realize the four-wheel steering function.

Description

technical field [0001] The invention relates to the field of electrically driven vehicles, in particular to a driving chassis of an electric vehicle. Background technique [0002] With the continuous development of society, the number of vehicles is increasing, and the roads are somewhat narrow, and the space required for parking vehicles is becoming more and more tense. So in the process of parking or U-turn will cause vehicle jam phenomenon, its main cause is due to the incomplete function of existing vehicle steering gear. The steering mechanism of existing vehicles mostly adopts two-wheel steering under the control of steering wheel and steering gear, and a few high-grade cars adopt four-wheel steering. [0003] Two-wheel steering is easy to control, but the turning radius of the vehicle is large, the stability is poor when turning at high speed, the parking space required for parking is large, and it is inconvenient to enter and exit. Four-wheel steering can overcome ...

AI Technical Summary

Problems solved by technology

[0003] The two-wheel steering is easy to control, but the turning radius of the vehicle is large, the stability is poor when turning at high speed, the space required for parking is large, and it is inconvenient to enter and exit

Four-wheel steering can overcome the above defects of two-wheel steering, but the structure of the control system is complicated and the cost is high, so it is mainly used in high-end cars

Therefore, the steering device disclosed in patent 200710017644.1 limits the flexibility and complex functions of the vehicle, and can only be used for position changes when the vehicle is close to a stop state, and cannot be applied to the motion control of the vehicle in the normal driving state

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