The invention belongs to the field of electric vehicle mileage prediction, and discloses an electric vehicle total mileage prediction method and device. The method comprises the following steps: acquiring whole vehicle driving data of a test vehicle under different driving conditions, and performing statistics according to the whole vehicle driving data to obtain the driving speed and power of thetest vehicle in unit time; inputting the driving speed and the power in the unit time into a battery simulation model, and calculating to obtain the attenuation of the battery life of the single charge-discharge cycle of the test vehicle and the corresponding driving mileage; and performing multiple charge-discharge cycle simulation calculation by using the battery simulation model to obtain an accumulated battery life attenuation amount of multiple charge-discharge cycles of the test vehicle, and calculating a corresponding accumulated mileage when the accumulated battery life attenuation amount reaches the attenuation amount when the battery life is ended, and predicting the total mileage of the electric vehicle according to the accumulated mileage. The method can accurately predict thetotal travelable mileage of the electric vehicle in the full life cycle of the power battery.

    本发明属于电动车辆里程预测领域,公开一种电动车辆行驶总里程预测方法及装置。所述方法包括:获取测试车辆在不同行驶工况下的整车行驶数据,根据所述整车行驶数据统计得到测试车辆单位时间内的行驶速度及功率;将所述单位时间内的行驶速度及功率输入电池仿真模型,计算得到测试车辆单次充放电循环的电池寿命衰减量及对应的行驶里程;利用所述电池仿真模型进行多次充放电循环仿真计算,得到测试车辆多次充放电循环的累积电池寿命衰减量,在所述累积电池寿命衰减量达到电池寿命终止时的衰减量时,计算对应的累积行驶里程,根据所述累积行驶里程预测电动车辆行驶总里程。本发明能够准确预测在动力电池全生命周期下电动车辆可行驶的总里程。


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    Title :

    Electric vehicle total mileage prediction method and device


    Additional title:

    电动车辆行驶总里程预测方法及装置


    Contributors:
    LI HAOHAO (author) / JIA JIANHAO (author) / SHENG JIE (author) / ZHAO LONGCAN (author) / ZHANG HENGLI (author)

    Publication date :

    2021-01-29


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES



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