An uphill crawling control method for a pure electric vehicle comprises the following steps: firstly, adjusting the motor torque to a first target torque for output when an uphill crawling control admission condition is met, and then controlling the motor torque to rise to a second target torque when a brake signal is not detected, and when the accelerator signal is not detected and the negative rotating speed exists, the motor torque is controlled to rise to third target torque, and the rising speed of the third target torque is larger than that of the second target torque. According to the method, the starting state of a traditional oil vehicle is simulated, the vehicle can be started by slightly loosening a brake pedal on a small ramp, the vehicle can be braked by slightly stepping on the brake pedal, the problem that the vehicle slides backwards when the brake is loosened when the vehicle is started on the small ramp is solved, the vehicle cannot slide backwards too fast on a large ramp, the vehicle cannot move forwards when the vehicle is started on a flat road, and safety accidents are avoided.

    一种纯电动汽车上坡蠕行控制方法,先在满足上坡蠕行控制准入条件时调节电机扭矩至第一目标扭矩输出,然后在未检测到制动信号时控制电机扭矩上升至第二目标扭矩,再在未检测到油门信号并存在负转速时控制电机扭矩上升至第三目标扭矩,第三目标扭矩的上升速率大于第二目标扭矩的上升速率。本方法模拟传统油车的起步状态,在较小坡道上稍松刹车踏板便可起步,稍踩刹车踏板即可将车辆刹停,解决了车辆较小坡道上起步时松刹车会后溜的问题,在较大坡道上也不至于后溜过快,车辆在平路起步不会前窜,避免发生安全事故。


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    Title :

    Uphill crawling control method for pure electric vehicle


    Additional title:

    一种纯电动汽车上坡蠕行控制方法


    Contributors:
    WANG LEI (author) / GUO QIXIANG (author) / TANG JIANBO (author) / LIN LING (author) / LI XIN (author) / ZENG MINGYANG (author) / MA YINBO (author) / YOU TAIKANG (author) / LI SHUAI (author) / LI DAWEI (author)

    Publication date :

    2022-05-10


    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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