BATTERY MODULE, AND BATTERY PACK AND VEHICLE INCLUDING THE SAME

The present disclosure discloses a battery module including a side plate capable of satisfying required rigidity in performing a role of controlling swelling of a battery cell and fixing the module on the side of the battery module. A battery module according to one aspect of the present disclosure includes a cell assembly having a plurality of battery cells; a module tray configured to support the cell assembly; and a pair of side plates configured to cover one side and the other side of the cell assembly, respectively, wherein at least one of the pair of side plates includes a first sub-plate having a first flange portion protruding outward; and a second sub-plate that has a second flange portion protruding outward and disposed to overlap the first flange portion and is coupled by overlapping the first sub-plate.