The invention discloses an abrupt slope slow descent control method and device of an electric vehicle and the electric vehicle. The method comprises the steps that whether the abrupt slope slow descent function condition and the energy recovery condition are met or not and whether the current maximum negative torque of a driving motor meets the requirement or not are judged according to the current working condition parameters of the vehicle; if so, controlling the driving motor to output negative torque; when the current maximum negative torque of the driving motor is not met, if the electronic stability control system ESC has no fault, the driving motor is controlled to output the negative torque, and a hydraulic braking system is controlled to execute the abrupt slope slow descent action, otherwise, the driving motor is controlled to output the current maximum negative torque, and hydraulic braking fault reminding is carried out; when the energy recovery condition is not met, if the ESC has no fault, the hydraulic braking system is controlled to execute the abrupt slope slow descent action, and if the ESC has the fault, the abrupt slope slow descent action is not executed, and hydraulic braking fault reminding is conducted; and if the abrupt slope slow descent function condition is not met, the abrupt slope slow descent action is not executed. Therefore, the reliability of the abrupt slope slow descent function is improved.

    本申请公开了一种电动车辆的陡坡缓降控制方法、装置及电动车辆,方法包括:根据车辆当前工况参数判断是否满足陡坡缓降功能条件与能量回收条件,当前驱动电机最大负扭矩是否满足需求;若均满足,控制驱动电机输出负扭矩;在未满足当前驱动电机最大负扭矩时,若电子稳定控制系统ESC无故障,控制驱动电机输出负扭矩,控制液压制动系统,以执行陡坡缓降动作,否则,控制驱动电机输出当前最大负扭矩,并进行液压制动故障提醒;在未满足能量回收条件时,若ESC无故障,控制液压制动系统执行陡坡缓降动作,若ESC有故障,不执行陡坡缓降动作,且进行液压制动故障提醒;若未满足陡坡缓降功能条件,则不执行陡坡缓降动作。由此,提高了陡坡缓降功能的可靠性。


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    Title :

    abrupt slope slow descent control method and device of electric vehicle and electric vehicle


    Additional title:

    电动车辆的陡坡缓降控制方法、装置及电动车辆


    Contributors:
    FANG TAO (author) / WANG CHUNLI (author) / ZHANG YOUJING (author) / XIAO XIAO (author) / WANG CHANGYUN (author) / DING LINGZHI (author) / WANG ZHIXIN (author) / XIA XIANYANG (author)

    Publication date :

    2021-08-06


    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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