The invention provides a remaining driving range estimation method and device and an electric automobile, and the remaining driving range estimation method comprises the steps: after the whole automobile is powered on, obtaining the initial power consumption per hundred kilometers stored in the last driving, and obtaining the battery state information and the automobile mode information; when the vehicle mode information is a static discharge mode, calculating a first to-be-corrected remaining driving range and average discharge power according to the battery state information and the initial power consumption per hundred kilometers; in a preset average speedometer, obtaining a target average vehicle speed corresponding to the average discharge power; in a preset first residual driving range correction coefficient table, a first target residual driving range correction coefficient corresponding to the target average vehicle speed is obtained; and calculating the current remaining driving mileage of the vehicle according to the first to-be-corrected remaining driving mileage and the first target remaining driving mileage correction coefficient. By adopting the scheme of the invention, the estimation accuracy is high, the error estimation of the residual driving range in the static discharge mode is avoided, and the use experience of a driver is improved.

    本发明提供一种剩余续驶里程估算方法、装置及电动汽车,该剩余续驶里程估算方法包括:整车上电后,获取上一次驾驶存储的初始百公里电耗,以及获取电池状态信息和车辆模式信息;在车辆模式信息为静止放电模式时,根据电池状态信息和初始百公里电耗,计算第一待修正剩余续驶里程和平均放电功率;在预设的平均车速表中,获取平均放电功率对应的目标平均车速;在预设的第一剩余续驶里程修正系数表中,获取目标平均车速对应的第一目标剩余续驶里程修正系数;根据第一待修正剩余续驶里程和第一目标剩余续驶里程修正系数,计算车辆当前的剩余续驶里程。采用本发明的方案估算准确度高,避免静止放电模式下的剩余续驶里程的错误估计,提高驾驶员使用感受。


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    Title :

    Remaining driving range estimation method and device and electric vehicle


    Additional title:

    一种剩余续驶里程估算方法、装置及电动汽车


    Contributors:
    FAN SAI (author)

    Publication date :

    2022-06-28


    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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