BATTERY RACK AND ENERGY STORAGE DEVICE COMPRISING BATTERY RACK

A battery rack includes a plurality of battery modules including at least one battery cell and a module case configured to accommodate the at least one battery cell and including a fire extinguishing unit capable of supplying a fire extinguishing agent into the module case when thermal runaway or fire occurs in the at least one battery cell; a rack case configured to accommodate the plurality of battery modules; and a drainage guide unit provided to the rack case and configured to guide the fire extinguishing agent used when the thermal runaway or fire occurs to be drained.