BATTERY PACK AND ENERGY STORAGE DEVICE COMPRISING SAME

The present disclosure relates to a battery pack, and a battery pack according to one aspect of the present disclosure may include a battery pack housing having a main window that allows infrared rays to pass through; a battery assembly accommodated inside the battery pack housing and composed of at least one battery cell; and a slave controller including a main communication unit capable of receiving infrared rays passing through the main window and configured to control the battery assembly.