A battery module, includes: a battery cell stack in which a plurality of battery cells are stacked; a first heat dissipation member disposed on one side of the cell stack; a second heat dissipation member disposed on the other side of the cell stack; and a blocking member providing a plurality of insulation spaces in which the battery cells are disposed, the blocking member surrounding at least one surface of each of the battery cells; wherein the plurality of the battery cells, include a first battery cell having a surface contacting the first heat dissipation member; and a second battery cell having a surface contacting the second heat dissipation member.