BATTERY MODULE, AND BATTERY PACK AND VEHICLE COMPRISING SAME

A battery module includes a battery cell stack in which a plurality of battery cells are stacked; a case configured to accommodate the battery cell stack and having a first discharge hole formed to discharge gas; an exhaust path member having a hole formed to communicate with the first discharge hole and mounted to the case to provide a discharge path of the gas so as to discharge the gas and prevent flame from leaking; and a cover coupled to the case to cover the exhaust path member and having a second discharge hole through which the gas moving through the exhaust path member is discharged.