BATTERY MODULE HAVING STRUCTURE ENABLING UNIFORM PRESSURE TO BE APPLIED DURING SWELLING, AND BATTERY PACK AND VEHICLE COMPRISING SAME

A battery module according to an embodiment of the present disclosure includes a cell stack including a plurality of battery cells; and a module housing including a base plate covering a lower surface of the cell stack, a cover plate covering an upper surface of the cell stack, and a connector connecting the base plate and the cover plate, and accommodating the cell stack, wherein the base plate and the cover plate have a curved shape so that the central region thereof is located closer to the cell stack than the edge regions.