The invention discloses an electric automobile braking system and a braking control method. When a braking handle brakes, anti-drag braking is conducted through a motor, and the braking energy is recycled to the maximum. When a braking pedal brakes, mechanical friction braking force and anti-drag braking force of the motor are organically superimposed; if the slippage rate of an automobile does not exceed an anti-lock brake system (ABS) limiting value, an ABS does not intervene with the work, and the total braking force changes linearly along with the opening degree of the braking pedal. When the slippage rate of the automobile exceeds the ABS limiting value, the ABS intervenes with the work, an ABS control unit informs an automobile controller of corresponding information through a CAN bus, the automobile controller controls the motor to exits from the energy recovery mode gradually and informs the ABS control unit of a gradually-exiting braking force value through the CAN bus, and then the ABS control unit controls a pressure replenishing valve to be opened. According to the electric automobile braking system and the braking control method, mechanical braking, auxiliary braking and feedback braking are organically merged, the intervening problem in the braking process of the electric automobile is solved, the braking efficiency is improved, and the operation experience of a driver on the braking system is improved.


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    Title :

    Electric automobile braking system and braking control method


    Contributors:
    WANG QINPU (author) / ZHAO JIA (author) / ZHAO HAO (author)

    Publication date :

    2015-09-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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