BATTERY MODULE, AND BATTERY PACK AND VEHICLE INCLUDING THE SAME

Provided are a battery module, and a battery pack and a vehicle including the same. A battery module according to an embodiment includes a battery cell stack in which a plurality of battery cells are stacked, a case in which the battery cell stack is accommodated, the case including a first outlet through which gas is discharged, an exhaust path member mounted on the case to provide a gas discharge path through which gas is discharged but a flame is prevented from leaking out, and a cover coupled to the case to cover the exhaust path member, the cover including a second outlet through which gas moving through the exhaust path member is discharged, wherein a covering portion included in the case is provided to adjust a length.