The invention discloses a power battery protection method and device, a vehicle and a storage medium, the method is applied to the vehicle comprising an engine, a generator, a power battery and a driving motor, and the method comprises the steps that when it is determined that the actual power of the power battery is larger than or equal to a power threshold value and the actual power change rate is larger than or equal to a rate threshold value, the driving motor is started; starting battery protection; when the current working condition is driving acceleration, the speed regulation power of the generator is controlled to be kept unchanged, and the allowable discharge power of the power battery is reduced; and when the current working condition is brake recovery, the speed regulation power of the generator is controlled to be kept unchanged, and the allowable charging power of the power battery is reduced. According to the technical scheme, according to the current working condition of the vehicle, the over-discharge trend and the over-charge trend of the power battery are predicted in advance, the speed regulation power of the generator is controlled to be kept unchanged, meanwhile, the allowable discharge power and the allowable charge power of the power battery are corrected, the over-charge trend and the over-discharge trend of the power battery are actively reduced, and the power battery is protected.

    本发明公开了一种动力电池保护方法、装置、车辆和存储介质,该方法应用于包括发动机、发电机、动力电池和驱动电机的车辆,包括:在确定动力电池的实际功率大于或等于功率门限值,且实际功率变化速率大于或等于速率门限值时,开启电池保护;当前工况为驱动加速时,控制发电机的调速功率保持不变,并减小动力电池的许用放电功率;当前工况为制动回收时,控制发电机的调速功率保持不变,并减小动力电池的许用充电功率。上述技术方案,根据车辆的当前工况,实现对动力电池过放和过充趋势的提前预测,控制发电机的调速功率保持不变,同时对动力电池的许用放电功率和许用充电功率进行修正,主动减小动力电池的过充过放趋势,实现对动力电池的保护。


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    Title :

    Power battery protection method and device, vehicle and storage medium


    Additional title:

    一种动力电池保护方法、装置、车辆和存储介质


    Contributors:
    XU JIALIANG (author) / LIANG GUIYOU (author) / ZHU HAO (author) / CHENG JIAN (author) / YU DAWEI (author)

    Publication date :

    2022-11-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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