The invention discloses a method and device for estimating the remaining endurance mileage of an electric vehicle, and the method comprises the steps: matching a current attenuation value of a power battery according to a current state parameter of the power battery; calculating the current available energy of the power battery based on the current attenuation value and the initial available energy of the power battery; and calculating pure discharge capacity of the power battery according to the state parameters of the vehicle, calculating the actual energy consumption of the vehicle, and calculating the actual remaining endurance mileage of the electric vehicle based on the current available energy. According to the embodiment of the invention, after the attenuation value of the battery is determined, the actual available energy of the battery is calculated, the pure discharge capacity is calculated based on the state parameters of the vehicle, the actual remaining endurance mileage is obtained, the estimation accuracy is improved, the estimation is more accurate and reliable, and the use experience is ensured. Therefore, the problems that the result of estimating the remaining endurance mileage of the electric vehicle through a model is not accurate and reliable, the energy management of a user on a power battery is affected, and the vehicle using experience of the user is reduced are solved.

    本申请公开了一种电动汽车的剩余续航里程估算方法及装置,其中,方法包括:根据动力电池的当前状态参数匹配动力电池的当前衰减值;基于当前衰减值结合动力电池的初始可用能量计算动力电池的当前可用能量;根据车辆的状态参数计算动力电池的纯放能量,并计算车辆的实际能耗,及基于当前可用能量计算电动汽车的实际剩余续航里程。本申请实施例在确定电池的衰减值之后,计算电池的实际可用能量,并基于车辆的状态参数计算纯放能量,获取实际剩余续航里程,提高估算的准确度,更加准确可靠,保证使用体验。由此,解决了通过模型对电动汽车的剩余续航里程进行估计的结果并不准确可靠,影响用户对动力电池的能量管理,降低用户的用车体验等问题。


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    Titel :

    Method and device for estimating remaining endurance mileage of electric vehicle


    Weitere Titelangaben:

    电动汽车的剩余续航里程估算方法及装置


    Beteiligte:
    ZHANG FEI (Autor:in) / HU HONGXI (Autor:in) / TANG QINGTAO (Autor:in) / DU DABAO (Autor:in)

    Erscheinungsdatum :

    2021-11-19


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Chinesisch


    Klassifikation :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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