The invention discloses an electric vehicle crawling control method and device.The method comprises the steps that real-time crawling parameters of a vehicle are obtained, and the real-time crawling parameters at least comprise the real-time vehicle speed, the target vehicle speed, a gear signal, the longitudinal acceleration, the ramp resistance torque, the ramp parking torque and the crawling output torque; according to the difference value between the real-time vehicle speed and the target vehicle speed, PI adjustment is conducted on the output torque of a vehicle motor; identifying a real-time working condition corresponding to the vehicle based on the PI adjusted output torque, the real-time vehicle speed, the target vehicle speed, the gear signal, the longitudinal acceleration and the ramp resistance torque; and performing predetermined processing on the real-time crawling parameters related to the real-time working conditions according to the real-time working conditions. According to the electric vehicle crawling control method and device provided by the embodiment of the invention, the problems that the vehicle slips during uphill starting and is unsmooth during downhill starting during crawling, and the vehicle has a forward rushing feeling after the brake is frequently released and stepped can be solved, so that the starting performance of the vehicle crawling function is enhanced, and the driving quality of the vehicle is improved.

    本发明公开了一种电动汽车爬行控制方法及装置,其中方法包括获取车辆的实时爬行参数,其中,实时爬行参数至少包括实时车速、目标车速、档位信号、纵向加速度、坡道阻力距、坡道驻坡扭矩和爬行输出扭矩;根据实时车速和目标车速的差值,对车辆电机的输出扭矩进行PI调节;基于PI调节的输出扭矩、实时车速、目标车速、档位信号、纵向加速度和坡道阻力距识别车辆对应的实时工况;根据实时工况对与实时工况相关的实时爬行参数进行预定处理。本发明实施例提供的电动汽车爬行控制方法及装置,能够解决车辆爬行上坡起步溜坡、下坡起步不平顺和频繁松踩刹车后起步车辆有前冲感的问题,从而增强了车辆爬行功能的起步性能,提升了车辆的驾驶品质。


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    Title :

    Electric vehicle crawling control method and device


    Additional title:

    一种电动汽车爬行控制方法及装置


    Contributors:
    PENG JUN (author) / LI RUNDONG (author) / YI HAIXIA (author) / LIANG WANWU (author) / LUO JINGWEI (author)

    Publication date :

    2022-11-01


    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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