BATTERY MANAGEMENT APPARATUS, BATTERY MANAGEMENT METHOD, AND ENERGY STORAGE SYSTEM INCLUDING THE BATTERY MANAGEMENT APPARATUS

Provided is a battery management apparatus, a battery management method and an energy storage system including the same. The battery management apparatus according to an embodiment of the present disclosure includes a first battery pack, a second battery pack, a first switch connected in series to the first battery pack between a first terminal and a second terminal, a second switch connected in series to the second battery pack between the first terminal and the second terminal, and a control unit. The control unit is configured to turn on both the first switch and the second switch when a voltage difference between the first battery pack and the second battery pack at a time point at which both the first switch and the second switch are turned off is less than a threshold voltage.