BATTERY MANAGEMENT DEVICE AND BATTERY SYSTEM COMPRISING SAME

A battery management device according to an embodiment disclosed in this document includes an intermediate signal generation unit that generate an intermediate signal related to operation control of a contactor corresponding to each of a first battery pack and a second battery pack connected in parallel with the first battery pack and a final signal generation unit that generates a final signal for controlling an electrical connection of the contactor corresponding to the second battery pack based on a comparison result between a link voltage, which is a voltage applied to nodes to which the first battery pack and the second battery pack are connected by the first battery pack, and a pack voltage applied to a positive contactor corresponding to the second battery pack, and the intermediate signal.