Method and device for calculating state of charge of vehicle-mounted lithium iron phosphate battery and storage medium

The invention discloses a method and a device for calculating the state of charge of a vehicle-mounted lithium iron phosphate battery and a storage medium. The method comprises the following steps: reading a historical SOC (State of Charge); the current battery state is obtained, the SOC of the battery is determined based on the battery state according to the historical SOC, and the battery state comprises power-on and power-off; when the battery is in a power-on state, calculating the SOC of the battery by adopting ampere-hour integral and constant-voltage charging calibration based on the historical SOC; and when the battery is in a power-off state, acquiring an open-circuit voltage of the battery, determining an SOC confidence interval corresponding to the open-circuit voltage according to an SOC curve, and calibrating the historical SOC based on the SOC confidence interval to calculate the SOC of the battery. 本发明公开了一种车载磷酸铁锂电池的荷电状态计算方法、装置及存储介质，包括：读取历史SOC；获取当前的电池状态，基于所述电池状态根据所述历史SOC确定电池的SOC，其中，所述电池状态包括上电和下电