| 摘要 |
<p>A state-of-charge estimating apparatus includes a first arithmetic unit 30 configured to calculate, as a first state-of-charge estimation value, the present value of a state-of-charge estimation value calculated based on a battery capacity, the last value of the state-of-charge estimation value, and an electric current flowing in and out between a current control apparatus 3, which controls charge and discharge amounts of a power storage apparatus 1, and the power storage apparatus 1, a second arithmetic unit 31 configured to calculate, during constant current control, as the present value of a second state-of-charge estimation value, a state-of-charge estimation value calculated based on an equivalent circuit model of a battery and a voltage of the battery and, on the other hand, calculate, during constant voltage control, as the second state-of-charge estimation value, the present value of a state-of-charge estimation value calculated taking into account a resistance change of the battery based on the equivalent circuit model of the battery and the voltage of the battery, and a correction arithmetic unit 32 configured to periodically correct the first state-of-charge estimation value with the second state-of-charge estimation value.</p> |
