The invention particularly relates to a dynamic parking torque control method and system, an electric vehicle and a storage medium. The dynamic parking torque control method comprises the steps that after triggering of a dynamic parking DBF of a vehicle is monitored, overall vehicle initial demand torque arbitration is carried out to obtain overall vehicle initial demand torque T3; obtaining and calculating a whole vehicle torque variation delta T based on the whole vehicle impact degree of the vehicle; the delay time t1 when the deceleration control CDP of the vehicle takes effect and the delay time t2 when the rear wheel anti-lock unit RWU takes effect are obtained; monitoring the state of the CDP, and if the CDP is activated, processing the T3 according to the delta T and the t1; if the CDP is not activated, but the RWU is activated, processing T3 according to delta T and t2; if neither CDP nor RWU is activated, T3 is processed based on the vehicle speed V of the vehicle; the torque output is adjusted by controlling the torque of the demand end in the dynamic parking process, the purposes of improving the dynamic parking drivability and improving the safety of the braking process are achieved, and the problem that the vehicle body posture control is insufficient due to the fact that braking is not smooth in the dynamic parking process is solved.

    本发明具体涉及一种动态驻车扭矩控制方法、系统、电动汽车及存储介质。其中动态驻车扭矩控制方法包括:监测到车辆的动态驻车DBF的触发后,进行整车初始需求扭矩仲裁来获得整车初始需求扭矩T3;获取并基于车辆的整车冲击度计算整车扭矩变化量ΔT;获取车辆的减速控制CDP生效的迟滞时间t1和后轮防抱死RWU生效的迟滞时间t2;监测CDP状态,若CDP激活,则根据ΔT和t1来处理T3;若CDP没有激活、但RWU激活,则根据ΔT和t2来处理T3;若CDP和RWU都没有激活,则基于车辆的车速V处理T3;本发明通过对动态驻车过程中需求端扭矩的控制,来调节扭矩输出,达到改善动态驻车驾驶性、提高制动过程安全性的目的,解决动态驻车过程中制动不平缓导致车身姿态控制不足的问题。


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    Title :

    Dynamic parking torque control method and system, electric vehicle and storage medium


    Additional title:

    一种动态驻车扭矩控制方法、系统、电动汽车及存储介质


    Contributors:
    QIAO SHUAIPENG (author) / HUANG LIANG (author) / YANG GUANLONG (author) / ZHU YUTAO (author) / YAN QINSHAN (author)

    Publication date :

    2023-06-23


    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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