Remaining battery estimating device, storage battery remaining estimating method, and program

摘要

The storage battery remaining amount estimating device of the embodiment includes a current correcting unit, an SOC calculating unit, a voltage estimating unit, an SOC corrected amount determining unit, and a current error estimating unit. The current correction unit determines the corrected current value based on the current value of the storage battery and the current correction amount. The SOC calculator calculates an estimated SOC value of the storage battery based on the corrected current value and the SOC correction amount. The voltage estimating unit determines the estimated voltage of the storage battery based on the temperature value of the storage battery, the corrected current value, and the SOC estimation value. The SOC correction amount determining unit determines the SOC correction amount based on a comparison between the voltage value of the storage battery and the voltage estimated value. The current error estimating unit determines the current correction amount based on the SOC correction amount.