The invention relates to a battery pack cooling liquid leakage detection method and circuit and a vehicle with the battery pack cooling liquid leakage detection circuit, and relates to the technical field of batteries. The method comprises the following steps: respectively charging a first parasitic capacitor and a second parasitic capacitor of a battery pack; wherein the first stray capacitor is composed of a main positive electrode in the battery pack and a battery pack shell, and the second stray capacitor is composed of a main negative electrode in the battery pack and the battery pack shell; detecting the charging time of the first parasitic capacitor and the charging time of the second parasitic capacitor; and according to the charging time of the first parasitic capacitor and the charging time of the second parasitic capacitor, detecting whether the cooling liquid of the battery pack leaks or not. The first stray capacitor and the second stray capacitor of the battery pack are charged respectively, the charging time of the first stray capacitor and the charging time of the second stray capacitor are detected, whether the cooling liquid of the battery pack leaks or not is determined, and the leakage of the cooling liquid can be avoided under the condition that a small amount of cooling liquid leaks and insulation failure is not caused. And the leakage condition of the cooling liquid of the battery pack is accurately detected.
本公开是关于一种电池包冷却液泄漏检测方法、电路及具有其的车辆,涉及电池技术领域。其中,该方法包括:对电池包的第一寄生电容和第二寄生电容分别进行充电;其中,第一寄生电容由电池包中的主正极与电池包壳体构成,第二寄生电容由电池包中的主负极与电池包壳体构成;检测第一寄生电容的充电时间和第二寄生电容的充电时间;根据第一寄生电容的充电时间和第二寄生电容的充电时间,检测电池包的冷却液是否发生泄漏。本公开通过对电池包的第一寄生电容和第二寄生电容分别进行充电,检测第一寄生电容和第二寄生电容的充电时间,确定电池包的冷却液是否发生泄漏,可在少量冷却液泄漏且未造成绝缘失效的情况下,准确检测电池包的冷却液泄漏情况。
Battery pack cooling liquid leakage detection method and circuit and vehicle with battery pack cooling liquid leakage detection circuit
电池包冷却液泄漏检测方法、电路及具有其的车辆
2022-11-01
Patent
Electronic Resource
Chinese
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