CHARGE-DISCHARGE CONTROL DEVICE

The charge-discharge control device includes an alternating current-direct current converter that converts AC power from a primary side into DC power, a direct current bus that distributes power from the alternating current-direct current converter, a plurality of channels connected in parallel to the direct current bus, and a processor configured to control a current of charging or discharging of a secondary battery connected to the channel so as to minimize power supplied from the primary side.