Battery module with selective temperature control

1. A battery module comprising:

a plurality of sub-modules arranged in a direction;

a cooling unit contacting respective one sides of the plurality of sub-modules to cool the plurality of sub-modules;

a heating unit contacting respective other sides of the plurality of sub-modules opposing each of the one sides of the plurality of sub-modules to heat the plurality of sub-modules;

wherein one or more sub-modules constituting the plurality of sub-modules include a pair of battery cells;

a heat transfer member interposed between the pair of battery cells, contacting respective one sides of the pair of battery cells opposing the cooling unit and the cooling unit; and

a frame member supporting the pair of battery cells and the heat transfer member;

wherein the heat transfer member of the plurality of sub-modules adjacent to each other are in contact with each other.

2. The battery module of claim 1 , wherein the heat transfer member includes a body disposed in the center of the frame member, and flanges respectively connected to both ends of the body to be respectively exposed to upper and lower surfaces of the frame member, contacting respective the one sides of the pair of battery cells and the cooling unit.

3. The battery module of claim 2 , wherein the heat transfer member has an I-beam structure formed by connecting central portions of surfaces of the flanges opposing each other to both ends of the body in a substantially vertical manner.

4. The battery module of claim 3 , wherein the frame member has a ring shape including a pair of lateral surfaces respectively connecting both ends of each of the upper and lower surfaces to each other, and the body of the heat transfer member extends across a space between the upper and lower surfaces in the center of the frame member.

5. The battery module of claim 3 , wherein each of the flanges has a protrusion protruding from a surface thereof and a receiving groove recessed in another surface, and the protrusion and the receiving groove have shapes allowing for engagement with each other.

6. The battery module of claim 5 , wherein the protrusion and the receiving groove extend in a length direction of each of the flanges.

7. The battery module of claim 2 , wherein each of the flanges has fastening grooves recessed in a surface connected to the body.

8. The battery module of claim 7 , wherein the fastening grooves are symmetrical to each other based on the body, and extend in a length direction of each of the flanges.

9. The battery module of claim 1 , wherein each of the plurality of sub-modules includes a pair of battery cells, a heat transfer member interposed between the pair of battery cells, a frame member supporting the pair of battery cells and the heat transfer member, and a pair of pad members fastened to the frame member to cover the pair of battery cells.

10. The battery module of claim 1 , further comprising a housing supporting the plurality of sub-modules, the cooling unit, and the heating unit.