The invention provides a power battery protection method and system, and belongs to the field of new energy automobiles. At present, the function of a power battery protection system of a new energy automobile fails due to protection gas leakage. The method comprises the steps of detecting a vehicle state; if the vehicle is in the shelving state and within a first set time period after charging is completed, the nitrogen protection system is powered, and the nitrogen protection system executes normal nitrogen charging logic; after a first set time period, supplying power to the nitrogen protection system according to a set time interval, and executing normal nitrogen filling logic; and if it is detected that the power battery has the nitrogen charging requirement, prolonging a second set time period for supplying power to the nitrogen protection system. According to the invention, the protection nitrogen of the power battery can be always kept at high air pressure, the protection function of the power battery is enhanced, the potential safety hazard of the power battery is reduced, and the service life of the power battery is prolonged.

    本发明提供了一种动力电池保护方法及系统,属于新能源汽车领域。目前,新能源汽车的动力电池保护系统因保护气体泄露导致保护系统功能失效。本发明包括检测车辆状态;若车辆处于搁置状态且在充电完成后的第一设定时间段内,对氮气保护系统供电,氮气保护系统执行正常充氮气逻辑;第一设定时间段后,按照设定时间间隔对氮气保护系统供电,执行正常充氮气逻辑;若检测到动力电池有充氮气需求,对氮气保护系统供电延长第二设定时间段。通过本发明可使动力电池的保护氮气经常保持较高气压,增强了动力电池的保护功能,减少了动力电池安全隐患,延长了动力电池使用寿命。


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    Title :

    Power battery protection method and system


    Additional title:

    一种动力电池保护方法及系统


    Contributors:
    WANG YI (author) / DING PANPAN (author) / SHA CHAO (author) / LIU JIALIANG (author) / JING JUNYA (author) / WANG KECHENG (author)

    Publication date :

    2022-08-12


    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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