| 摘要 |
Provided are a charging/discharging device that can efficiently charge/discharge a storage battery, and a charging/discharging system using the charging/discharging device. The charging/discharging system is provided with the charging/discharging device and a storage battery unit comprising the storage battery. The charging/discharging device is provided with a power conversion unit that is provided on a charging/discharging path of the storage battery and converts power, and the charging/discharging device is also provided with a controller comprising a control unit that controls storage battery charging/discharging for which the power conversion unit is used. The control unit of the controller controls the power conversion unit in such a way that charging/discharging of the storage battery is not carried out if a conversion efficiency representing the ratio of output power to input power in the power conversion unit is determined to be low according to a predetermined condition. |
