The invention provides a pre-charging loop protection method and device, electronic equipment and a storage medium, and the method comprises the steps: providing a pre-charging loop, and enabling the pre-charging loop to be connected with a charging main loop of a power battery in parallel, so as to pre-charge a high-voltage power utilization unit before the charging main loop supplies power, and obtaining a pre-charging current, a first voltage and a second voltage in a pre-charging process; if the charging time reaches a pre-charging time threshold value and the first voltage is smaller than a first voltage threshold value, the abnormal condition of the pre-charging loop is judged according to the pre-charging current or the second voltage, and the pre-charging loop is cut off according to the abnormal condition; wherein the first voltage is the input voltage of the high-voltage power utilization unit, and the second voltage is the output voltage of the power battery. According to the method, the parameters in the pre-charging process are obtained, the abnormal condition of the pre-charging loop is determined according to the parameters in the pre-charging process, the pre-charging loop is cut off, the abnormity of the pre-charging loop is determined, the abnormity occurrence position is accurately positioned, and therefore a repair direction is provided for maintainers.

    本发明提供一种预充电回路保护方法、装置、电子设备及存储介质,提供预充电回路,预充电回路与动力电池的充电主回路并联,以在充电主回路供电之前对高压用电单元进行预充电,获取预充电过程中的预充电流、第一电压及第二电压;若充电时间达到预充电时间阈值,第一电压小于第一电压阈值,则根据预充电流或第二电压判断预充电回路的异常情况,并根据所述异常情况切断预充电回路;其中,第一电压为高压用电单元的输入电压,第二电压为动力电池的输出电压。本发明获取预充电过程中的参数,根据预充电过程中的参数确定预充电回路的异常情况并切断预充电回路,不仅确定预充电回路的异常,还精准定位异常发生位置,从而为检修人员提供修理方向。


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    Title :

    Pre-charging loop protection method and device, electronic equipment and storage medium


    Additional title:

    一种预充电回路保护方法、装置、电子设备及存储介质


    Contributors:
    DU MINGHAO (author) / GONG TAO (author) / SUN HONGDAO (author) / NIE KAIFENG (author) / ZHAI JUN (author)

    Publication date :

    2023-09-05


    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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