A battery module according to embodiments of the present disclosure includes: a battery cell stack in which a plurality of battery cells are stacked; a module frame for housing the battery cell stack; and a heat sink located below a bottom portion of the module frame, wherein the bottom portion constitutes an upper plate of the heat sink, wherein the heat sink and the bottom portion form a flow passage of a refrigerant, and wherein a convex pattern portion protruding in a direction in which the battery cell stack is located is formed on the bottom portion.