The invention relates to the field of data processing, and discloses an early warning method, device and equipment for a power battery and a storage medium. The method comprises the following steps: acquiring respective voltage monitoring data of a plurality of single batteries under a preset working condition; processing the voltage monitoring data to delete abnormal data or correct the abnormal data to obtain processed voltage monitoring data; determining an absolute value of a voltage difference between each battery monomer voltage and an average voltage at each sampling moment based on the processed voltage monitoring data; determining a mean value and a variance of the absolute values; based on the mean value and the variance, respectively determining a mean value extreme offset, a variance extreme offset, a mean value extreme offset rate and a variance extreme offset rate; and determining whether an early warning condition is met or not according to one or more of the mean extreme offset, the variance extreme offset, the mean extreme offset rate and the variance extreme offset rate. According to the embodiment, the early warning accuracy is improved.
本发明涉及数据处理领域,公开了一种动力电池的预警方法、装置、设备和存储介质。该方法包括:获取预设工况下多个电池单体各自的电压监测数据;对所述电压监测数据进行处理,以删除异常数据或者对异常数据进行修正,获得处理后的电压监测数据;基于所述处理后的电压监测数据确定每个采样时刻下各电池单体电压与平均电压之间压差的绝对值;确定所述绝对值的均值和方差;基于所述均值和方差分别确定均值极值偏移量以及方差极值偏移量、均值极值偏移率和方差极值偏移率;根据所述均值极值偏移量、方差极值偏移量、均值极值偏移率以及方差极值偏移率中的一个或多个确定是否满足预警条件。本实施例提高了预警准确性。
Early warning method, device and equipment of power battery and storage medium
动力电池的预警方法、装置、设备和存储介质
2023-01-31
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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