The invention discloses a method and a system for preventing an electric vehicle from sliding on a slope, and belongs to the technical field of electric vehicle control. The problems of lower initialtorque value precision of a motor controller and lower timeliness of slope sliding prevention during slope sliding prevention in the prior art are solved. The method for preventing the electric vehicle from sliding on the slope comprises the following steps: a gear signal, an accelerator signal, a brake signal, a hand brake signal and a current road slope value are obtained, and whether an initialslope-holding torque value instruction is sent to the motor controller or not is determined according to the gear signal, the accelerator signal, the brake signal, the hand brake signal and the current road slope value; and after the initial hill-holding torque value instruction is sent to the motor controller, whether the rotating speed of the motor is negative or not is judged, if so, torque compensation is conducted on the motor controller to control the vehicle to be parked on the slope, and if not, the vehicle is directly controlled to be parked on the slope. The initial torque value precision of the motor controller during slope sliding prevention and the timeliness of slope sliding prevention are improved.

    本发明公开一种电动汽车防溜坡方法及系统,属于电动汽车控制技术领域,解决了现有技术防溜坡时电机控制器的初始转矩值精度较低及防溜坡的时效性较低。一种电动汽车防溜坡方法,包括以下步骤:获取档位信号、油门信号、制动信号、手刹信号及当前道路坡度值,并根据所述档位信号、油门信号、制动信号、手刹信号及当前道路坡度值,确定是否向电机控制器发送初始驻坡转矩值指令;当向电机控制器发送初始驻坡转矩值指令后,判断电机转速是否为负,若是,则对电机控制器进行转矩补偿,以控制车辆在坡道上驻停,若否,则直接控制车辆在坡道上驻停。提高了防溜坡时电机控制器的初始转矩值精度及防溜坡的时效性。


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    Title :

    Method and system for preventing electric vehicle from sliding on slope


    Additional title:

    一种电动汽车防溜坡方法及系统


    Contributors:
    FU XIANG (author) / SHI YE (author) / WU SEN (author)

    Publication date :

    2020-06-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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




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