BATTERY MODULE AND BATTERY PACK INCLUDING SAME

A battery module according to an embodiment of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked, a busbar frame connected to the battery cell stack, a busbar disposed on the busbar frame, and an electrode lead extending from a battery cell of the battery cell stack and welded to the busbar, wherein the busbar includes at least one or more concave parts recessed toward the center of the busbar, and a protrusion part protruding in a direction opposite to the center of the busbar.