BATTERY MODULE

Provided is a battery module having improved heat dissipation performance to appropriately control heat of the battery module. The battery module includes a cell assembly including a plurality of battery cells stacked in at least one direction and a module case having an inner space in which the cell assembly is accommodated, the module case including an uneven portion formed on at least a part of an inner surface of the module case in a direction not parallel to a stacking direction of the plurality of battery cells.