The invention discloses a mountain road driving control method and system for an electric vehicle, and belongs to the technical field of vehicle control, and the method comprises the steps: 1, obtaining vehicle real-time information data through a whole vehicle control unit; 2, according to real-time acceleration information of the vehicle running on the mountain road, the road gradient of the vehicle running is calculated, and a gradient threshold value and a pedal opening threshold value for starting driving torque compensation are designed; based on the vehicle state, whether torque compensation is started or not is judged; 3, based on the difference value between the expected acceleration of the driver and the actual acceleration, primary compensation is conducted on the driving torque, and compensation is conducted on the torque through PI control; and 4, based on the change rate of the accelerator pedal of the driver and the actual vehicle speed, driving torque second-level compensation is started on the basis of the first-level torque compensation. According to the method and system, the opening degree and change rate of an accelerator pedal, the real-time vehicle speed, the acceleration and the driving torque are analyzed and calculated through a vehicle control unit, torque compensation is started according to mountain road gradient information, the power performance of mountain road driving of the electric vehicle is enhanced, and secondary torque compensation is started based on the subjective intention of a driver; and the response speed of vehicle power output is increased, so that the driving experience of a driver is improved.

    本发明公开了一种电动车辆山路行驶的控制方法及系统,属于车辆控制技术领域,包括:步骤一、通过整车控制单元获得车辆实时信息数据;步骤二、根据车辆在山路行驶的加速度实时信息,计算车辆行驶的道路坡度,设计开启驱动扭矩补偿的坡度阈值和踏板开度阈值;并基于车辆状态,判断是否开启扭矩补偿;步骤三、基于驾驶员期望加速度和实际加速度的差值,对驱动扭矩进行一级补偿,并采用PI控制对扭矩进行补偿;步骤四、基于驾驶员加速踏板的变化速率和实际车速,在一级扭矩补偿的基础上,开启驱动扭矩二级补偿。该方法及系统通过整车控制器对油门踏板开度及变化率、实时车速、加速度、驱动扭矩进行分析计算,进而根据山路坡度信息开启扭矩补偿,增强电动车辆山路行驶的动力性,并基于驾驶员主观意图,开启二级扭矩补偿,提升车辆动力输出的响应速度,从而提高驾驶员的驾驶体验。


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    Title :

    Control method and system for mountain road driving of electric vehicle


    Additional title:

    一种电动车辆山路行驶的控制方法及系统


    Contributors:
    LI WENQI (author) / LI YANG (author) / WEI SHOUQI (author) / QIAN XIN (author) / WANG LUGANG (author) / AN JIE (author)

    Publication date :

    2024-10-01


    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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