The invention relates to the technical field of pure electric vehicles, in particular to a method and device for improving the cruising ability of a pure electric vehicle. Comprising the following steps: 1) calculating a theoretical feedback electric quantity according to a vehicle speed and a brake pedal opening degree, and further calculating a theoretical feedback demand current according to the theoretical feedback electric quantity; and 2) if the theoretical feedback demand current calculated in the step 1) is smaller than the battery charging capacity corresponding to the current battery self-heating threshold value, the battery self-heating threshold value is reduced to a target value, and the target value is the battery temperature corresponding to the theoretical feedback demand current, so that the cruising ability of the battery is improved. According to the actual use condition of the pure electric vehicle, electric braking and mechanical braking distribution of a braking system is automatically adjusted in real time, the battery self-heating temperature is adjusted, and the cruising ability of the vehicle is improved.

    本发明涉及纯电动车技术领域,具体为一种纯电动车续航能力提升方法及装置。包括如下步骤:1)根据车速和制动踏板开度计算理论回馈电量,进而根据理论回馈电量计算得到理论回馈需求电流;2)若步骤1)计算得到的理论回馈需求电流小于当前的电池自加热阈值对应的电池充电能力,则降低电池自加热阈值至目标值,目标值为理论回馈需求电流对应的电池温度,以提升电池的续航能力。根据纯电动车辆实际使用工况,实时自动调节制动系统电制动、机械制动分配,调节电池自加热温度,提高车辆续航能力。


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    Title :

    Method and device for improving cruising ability of pure electric vehicle


    Additional title:

    一种纯电动车续航能力提升方法及装置


    Contributors:
    ZHAO SHICHAO (author) / WANG SHIYAO (author) / LIU YAZHOU (author) / JING JUNYA (author) / LIU WENFENG (author)

    Publication date :

    2023-08-15


    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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