The invention provides a power battery monitoring method and device, an electric vehicle and a medium, and the method comprises the steps: if a power battery is charged to the tail end and the SOC value of the power battery is greater than a preset SOC value, obtaining the change rate of the voltage of each cell along with the capacity in the charging process; determining the standard deviation of each battery module according to the change rate of the voltage of each battery cell in each battery module along with the capacity; and based on the standard deviation of each battery module, if the existence of the discrete battery module is detected, in a preset SOC range, according to the obtained standard deviation of the discrete battery module at different time points in the full life cycle, determining the anomaly type of the discrete battery module. According to the invention, the abnormity of the power battery is detected by using the standard deviation of the module at the SOC high-order end, so that the consistency of the power battery can be detected no matter the power battery is charged in a fast charging mode or a slow charging mode, and the use scene is richer.
本发明提供了一种动力电池的监控方法、设备、电动车辆和介质,包括若动力电池充电至末端,且动力电池的SOC值大于预设SOC值,获取充电过程中每个电芯的电压随容量变化率;根据每个电池模组中每个电芯的电压随容量变化率,确定每个电池模组的标准差;基于每个电池模组的标准差,若检测到存在离散电池模组,在预设SOC范围内,根据获取的离散电池模组在全生命周期中不同时间点下的标准差,确定离散电池模组的异常类型。实现了在SOC高位端,利用模组的标准差对动力电池的异常进行检测,这样,无论动力电池采用快充方式充电还是慢充方式充电,均可以实现对动力电池的一致性进行检测,进而使得使用场景更加丰富。
Power battery monitoring method and equipment, electric vehicle and medium
动力电池的监控方法、设备、电动车辆和介质
2025-01-21
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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