The invention relates to the technical field of fault detection, and discloses a battery pack power-on fault detection method and device, a battery pack, a vehicle and a medium, and the method comprises the steps: controlling a pre-charging contactor to be closed, and obtaining the current current of a main loop of the battery pack; judging whether the current current is greater than a preset current threshold; and when the current is greater than a preset current threshold value, determining that the main negative contactor has an adhesion fault. Before the battery pack is controlled to be normally powered on, the current in the main loop of the battery pack is detected in a mode of controlling the pre-charging contactor to be closed, and the adhesion fault of the main negative contactor is determined according to a mode of comparing the current detection result with the preset current threshold value; therefore, the fault detection function of the adhesion fault of the main negative contactor in the power-on process of the battery pack is realized without adding a hardware detection circuit, the detection cost is reduced, the detection effect is good, the method can be directly applied to fault detection in the power-on process of the battery pack of a whole vehicle, and the driving safety of the vehicle is guaranteed.
本发明涉及故障检测技术领域,公开了电池包上电故障检测方法、装置、电池包、车辆及介质,该方法包括:控制预充接触器闭合,获取电池包的主回路的当前电流;判断当前电流是否大于预设电流阈值;在当前电流大于预设电流阈值时,确定主负接触器存在黏连故障。本发明在控制电池包正常上电前先控制预充接触器闭合的方式对电池包主回路中电流进行检测,根据电流检测结果与预设电流阈值比较的方式确定主负接触器存在黏连故障,从而在无需增加硬件检测电路的情况下实现了电池包上电过程中主负接触器存在黏连故障的故障检测功能,降低了检测成本,并且检测具有良好的检测效果,可直接应用于整车的电池包上电过程的故障检测,保障车辆驾驶安全。
Battery pack power-on fault detection method and device, battery pack, vehicle and medium
电池包上电故障检测方法、装置、电池包、车辆及介质
2024-08-23
Patent
Electronic Resource
Chinese
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