| 摘要 |
A vehicle (1) includes a chargeable and dischargeable battery (B1), a current sensor (11-1) for detecting electric current of the battery, and a controller (30) for estimating a state of charge of the battery and controlling charging and discharging of the battery based on the state of charge. In a first operation mode in which charging and discharging cycles are repeated, the controller (30) estimates an open-circuit voltage of the battery and determines the state of charge based on a value obtained by correcting the open-circuit voltage based on polarization. In a second operation mode in which one of charging and discharging is continued, the controller (30) determines the state of charge based on a result of integration of the current detected by the current sensor. In this way, the vehicle can be provided in which the secondary battery can be charged with and discharge a large amount of energy and can be effectively used. |
