The invention discloses a pure electric automobile driving range correction method and system. The method comprises steps that short-period energy consumption W and long-period energy consumption W are obtained according to historical driving data of an automobile; the current running speed of the automobile is obtained, and a correction coefficient a of the automobile under the current running working condition is obtained in combination with the corresponding relation between the automobile speed and the correction coefficient; according to the obtained energy consumption W in the short period of the automobile, the energy consumption W in the long period of the automobile and the correction coefficient a, the estimated energy consumption W of the automobile is obtained through calculation; and the driving range of the automobile is obtained by dividing the remaining available power consumption Q of the battery pack by the estimated energy consumption W obtained in the step 4. According to the method, the driving mileage correction coefficients under different vehicle speed working conditions are introduced, and the specific gravity of the short-period energy consumption and the long-period energy consumption is adjusted by utilizing the correction coefficients, so calculation accuracy of the whole vehicle system on the driving mileage is improved, the risk that the vehicle breaks down due to insufficient electric quantity in the driving process is reduced, and the user experience is improved.

    本发明公开了一种纯电动汽车续驶里程修正方法及其系统,该方法包括:根据汽车历史行驶数据,得到短周期能耗W短和长周期能耗W长;获取汽车当前的行驶速度,结合车速‑修正系数间的对应关系,得到汽车当前行驶工况下的修正系数a;根据所得到的汽车短周期内能耗W短、长周期内能耗W长和修正系数a,计算得到汽车的估算能耗W估算;通过获取电池包的剩余可用电量Q除以步骤4中所得估算能耗W估算,得到汽车的续驶里程。本发明方法通过引入不同车速工况下的续驶里程修正系数,利用修正系数来调节短周期能耗与长周期能耗的比重,以提高整车系统对续驶里程的计算准确性,降低汽车在驾驶过程中因电量不足而抛锚的风险,改善了用户体验。


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    Title :

    Method and system for correcting driving range of pure electric automobile


    Additional title:

    一种纯电动汽车续驶里程修正方法及其系统


    Contributors:
    CHEN JIAN (author) / LIU WEIDONG (author) / HU SONGHUA (author)

    Publication date :

    2021-12-07


    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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