BATTERY RACK AND POWER STORAGE DEVICE COMPRISING SAME

A battery pack includes a plurality of battery modules, each having at least one battery cell, a rack case configured to accommodate the plurality of battery modules, and a fire proof unit mounted to be spaced apart from each other by a predetermined distance along a vertical direction of the rack case and configured to support the battery modules and prevent flame and heat from propagating to adjacent battery modules when a fire occurs in at least one of the plurality of battery modules.