The embodiment of the invention relates to a power battery high-voltage loop control circuit and protection method, a vehicle and a storage medium. The protection method comprises the steps of monitoring the current of a high-voltage loop in a power battery, and judging whether the current exceeds a preset current upper limit or not in a preset number of continuous monitoring periods; if it is judged that the current exceeds the preset current upper limit in the preset number of continuous monitoring periods, judging whether sudden voltage drop between the positive electrode and the negative electrode of the high-voltage loop exists in the continuous monitoring periods or not; and if it is judged that the sudden voltage drop exists between the positive electrode and the negative electrodeof the high-voltage loop in the continuous monitoring periods, disconnecting the high-voltage loop. By means of the control circuit, the protection method, the vehicle and the storage medium, the problems that under the condition of small-current short circuit, the short circuit can last for a long time if the fusing current of a fuse is not reached, even disconnection is not likely to happen, andbattery overheating out-of-control fire catching is likely to be caused are solved.

    本发明实施例涉及一种动力电池高压回路控制电路及保护方法、车辆、存储介质,所述保护方法包括:监控动力电池中的高压回路的电流,判断所述电流是否在预设数量的连续监控周期内超过预设电流上限;若判断所述电流在预设数量的连续监控周期内超过预设电流上限,则判断在所述连续监控周期中是否存在高压回路正负极之间的电压骤降;若判断在所述连续监控周期中存在高压回路正负极之间的电压骤降,则断开所述高压回路。通过上述控制电路及保护方法、车辆、存储介质,解决了在小电流短路的情况下,未达到熔断器的熔断电流,短路会持续很长时间,甚至不容易断开,易造成电池过热失控起火的问题。


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    Title :

    Power battery high-voltage loop control circuit and protection method, vehicle and storage medium


    Additional title:

    一种动力电池高压回路控制电路及保护方法、车辆、存储介质


    Contributors:

    Publication date :

    2020-10-09


    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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