BATTERY MODULE AND BATTERY PACK INCLUDING THE SAME

A battery module including: a battery cell stack including a plurality of battery cells; a housing for housing the battery cell stack; and a heat sink located below a bottom part of the housing. The bottom part constitutes an upper plate of the heat sink, the heat sink and the bottom part form a flow passage for a refrigerant, and a convex pattern portion protruding in a direction in which the battery cell stack is located is formed on the bottom part.