BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

A battery module according to one embodiment of the present disclosure includes a battery cell stack including a plurality of battery cells arranged along a first direction; side plates covering each of both side surfaces of the battery cell stack along the first direction; a busbar frame covering one surface of the battery cell stack in a direction in which the electrode leads of the battery cells protrude; and a disc spring part located on the outside of the side plate. The disc spring part is compressed in a direction parallel to the first direction.