| 摘要 |
Disclosed is a battery state of charge calculation device (100) equipped with an SOCV calculation unit (5) that outputs a first state of charge calculated based on voltage data, an SOCI calculation unit (6) that outputs a second state of charge calculated based on current data, an estimated impedance voltage calculation unit (12) that calculates an impedance voltage value based on the effective state of charge and current data, a static decision unit (7) that determines that the impedance voltage value has remained static for longer than a prescribed time within a range delimited with prescribed threshold values and outputs the decision result, and an SOC determination unit (20) that, based on the decision result, outputs the first state of charge as the effective state of charge when the impedance voltage is static, and otherwise outputs the second state of charge as the effective state of charge. |
