The invention provides an electric vehicle driving range estimation method based on a battery aging level. The method comprises the steps that operation data of the electric vehicle are collected, the operation data comprise the average running speed and the electric quantity use interval, the battery aging level corresponding to the electric quantity use interval is obtained through a capacity increment analysis method, and the electric quantity use interval is grouped based on the temperature condition; constructing a nonlinear estimation model of the speed and the unit energy consumption mileage of the electric vehicle according to the operation data of the electric vehicle; and according to the nonlinear estimation model of the speed and the unit energy consumption mileage, constructing a driving mileage calculation model in the battery use interval, and calculating the driving mileage of the electric vehicle under different battery aging levels and temperature conditions. According to the method, accurate estimation of the driving mileage of the electric vehicle is achieved, meanwhile, the characteristics of the actual operation environment are effectively integrated, and the method is suitable for a driving mileage detection and prediction system of the electric vehicle in the actual complex urban traffic environment.

    本发明提供了一种基于电池老化水平的电动汽车的续驶里程估计方法。该方法包括:采集电动汽车的运行数据,该运行数据包括平均行驶速度和电量使用区间,通过容量增量分析法获取电量使用区间对应的电池老化水平,基于温度条件对电量使用区间进行分组;根据电动汽车的运行数据构建电动汽车的速度与单位能耗行驶里程的非线性估计模型;根据速度与单位能耗行驶里程的非线性估计模型构建电池使用区间内的续驶里程计算模型,计算出不同电池老化水平和温度条件的电动汽车的续驶里程。本发明方法在实现电动汽车的续驶里程精确估计的同时,有效融入了实际运行环境特点,适用于实际复杂城市交通环境下电动汽车的续驶里程检测和预测系统。


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    Title :

    Electric vehicle driving range estimation method based on battery aging level


    Additional title:

    一种基于电池老化水平的电动汽车的续驶里程估计方法


    Contributors:
    WANG YONGXING (author) / BI JUN (author) / ZUO XIAOLONG (author)

    Publication date :

    2023-11-21


    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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