The invention provides a brake control method of an electric vehicle, which is applied to a vehicle control unit, a front axle of the electric vehicle adopts electro-hydraulic brake, a rear axle adopts electro-mechanical brake, and the method comprises the following steps: acquiring displacement information of a brake pedal of the electric vehicle, the mass and the current longitudinal speed of the electric vehicle, and the current road gradient; based on the displacement information, the mass, the gradient and the longitudinal speed, final required torque of the four hubs of the electric automobile is determined; and each final demand torque is distributed based on a preset torque mixing rule, the mixed torques of the four hubs of the electric vehicle are obtained, and the mixed torques comprise the friction brake output torque and the hub motor output torque. According to the method, a hybrid torque enhancing function is provided, the vehicle can keep a stable motion state under the condition of a slope, a hybrid torque continuous control strategy which is not available in the prior art is provided, and the vehicle stability and the driving comfort are obviously improved.

    本发明提供一种电动汽车的制动控制方法,应用于车辆控制单元,电动汽车的前轴采用电液制动,后轴采用电机械制动,方法包括:获取电动汽车的制动踏板的位移信息、电动汽车的质量和当前纵向速度、以及当前道路坡度;基于位移信息、质量、坡度和纵向速度确定所述电动汽车的四个轮毂分别的最终需求扭矩;基于预设的扭矩混合规则分配各最终需求扭矩,得到电动汽车的四个轮毂分别的混合扭矩,所述混合扭矩包括摩擦制动器输出扭矩和轮毂电机输出扭矩。本发明提供诸如混合扭矩的增强功能,让车辆在有坡度的情况下保持平稳的运动状态,提出了一种现有技术中尚无的混合扭矩的连续控制策略,并在车辆稳定性和驾驶舒适性方面均有明显改善。


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    Title :

    Braking control method and device of electric vehicle and storage medium


    Additional title:

    电动汽车的制动控制方法、装置和存储介质


    Contributors:
    WANG NIAN (author) / ZHAO CHUNLAI (author) / ZHANG ZEYANG (author) / WU TING (author) / WU HAO (author)

    Publication date :

    2024-07-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen




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