Regenerative braking control system and method for pure electric vehicle

Abstract

The invention provides a regenerative braking control system and method for a pure electric vehicle. The regenerative braking control system for the pure electric vehicle comprises an electric energy storage unit, a permanent magnet synchronous motor, a BMS, an MCU, a VCU, a regenerative braking system, a radar sensor, a mechanical braking system and a brake pedal stroke sensor. The electric energy storage unit supplies power to the permanent magnet synchronous motor through the BMS and the MCU which are sequentially connected. The permanent magnet synchronous motor conducts mechanical transmission to drive a vehicle power shaft. By the adoption of the system and method, through reasonable and comprehensive judgment and control, a regenerative braking manner and a mechanical braking manner can be reasonably selected, and the use manner of braking return energy can be reasonably selected, so that braking energy is fully recovered, the problem that the driving mileage of the pure electric vehicle is short can be solved, and meanwhile the cyclic service life of a power battery is prolonged.

Description

technical field [0001] The invention relates to a pure electric vehicle regenerative braking control system and a method thereof, belonging to the technical field of electric vehicle energy recovery. Background technique [0002] The increase in car ownership, the increase in traffic accidents, the gradual increase in consumer safety awareness, the stricter safety regulations of governments in various countries, and the fierce competition among companies have all promoted the development of automobile safety research. The traditional safety technology can no longer meet people's requirements, and the new technologies in the fields of sound, light and electricity have been applied to the field of automobile safety research. Pure electric vehicles have significant advantages such as high efficiency, low noise, and zero emissions, and have incomparable advantages in environmental protection and energy saving. Their application and popularization have become an inevitable trend ...

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, there is a lack of reasonable control over the regenerative braking system, and a lack of good use of its braking energy, so that regenerative braking and mechanical braking often exist at the same time, and the distribution ratio of regenerative braking and mechanical braking Small, the braking energy cannot be fully recovered, and the battery discharge is too large

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