| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for detecting a battery capacity which enables attainment of a correct SOC estimated value. SOLUTION: In an SOC estimating device 1 wherein an SOC estimated value obtained by estimation by an equivalent circuit model system and an SOC estimated value obtained by estimation by current integration are switched over at a prescribed timing. The prescribed timing is set at the time when it is established that an error of a voltage estimated value by an equivalent circuit model from an actual voltage value obtained from a voltage sensor 60 is a prescribed value or below, an actual current value obtained from a current sensor 70 being a prescribed value or below, an actual current variation value within a prescribed period being a prescribed value or below, that an actual voltage variation value within a prescribed period is a prescribed value or below and a battery temperature obtained from a temperature sensor 80 being a prescribed value or above. COPYRIGHT: (C)2011,JPO&INPIT |
