The embodiment of the invention provides a correction method and device for the SOC of a power battery, a vehicle and a storage medium, and the correction method comprises the steps: determining that the current value of the power battery is in a stable state; acquiring a current first SOC estimated value estimated by the BMS; estimating a current second SOC estimated value according to the dynamic voltage of the power battery; and comparing the first SOC estimation value with the second SOC estimation value, correcting the first SOC estimation value according to a comparison result to obtain a corrected SOC estimation value, and updating the corrected SOC estimation value to the current first SOC estimation value. According to the correction method in the embodiment of the invention, the estimation precision of the SOC value in the long-time driving process of the vehicle is improved, the probability of fault phenomena such as over-charge and over-discharge of the power battery is reduced, the service life of the power battery is effectively prolonged, the user experience is improved, and the mileage anxiety of a user is relieved.
本发明实施例提供一种动力电池SOC的修正方法、装置、车辆及存储介质,其中,修正方法包括:确定动力电池的电流值处于稳定状态;获取由BMS所估算的当前的第一SOC估值;根据动力电池的动态电压估算得到当前的第二SOC估值;对比第一SOC估值和第二SOC估值,根据对比结果修正第一SOC估值,得到修正SOC估值,并将修正SOC估值更新为当前的第一SOC估值。本发明实施例中的修正方法提高了车辆长时间行驶过程中对SOC值的估算精度,降低动力电池出现过充、过放等故障现象的几率,有效延长动力电池的使用寿命和提升用户体验,缓解用户的里程焦虑。
Power battery SOC correction method and device, vehicle and storage medium
一种动力电池SOC的修正方法、装置、车辆及存储介质
25.10.2022
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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