Battery module

1. A battery module, comprising:

a plurality of battery cells aligned in one direction; and

a barrier interposed between respective battery cells,

wherein the barrier has a shape including arms that extend along a straight line from one corner of one battery cell to an opposing corner of the battery cell, the arms crossing at a central portion of the battery cell, and

wherein the barrier is formed from a thermally conductive material.

2. The battery module as claimed in claim 1 , wherein the barrier has an X-shape.

3. The battery module as claimed in claim 1 , wherein the barrier includes at least one rib connecting ends of the barrier.

4. The battery module as claimed in claim 1 , wherein the barrier has a size and a shape corresponding to a size and a shape of the battery cell.

5. The battery module as claimed in claim 1 , wherein the barrier includes at least one protruding portion thereon.

6. The battery module as claimed in claim 5 , wherein the protruding portion has a circular or square shape.

7. The battery module as claimed in claim 1 , wherein the barrier further includes fixing portions thereon, the fixing portions fixing a position of the battery cell.

8. The battery module as claimed in claim 7 , wherein each of the fixing portions has a flange shape bent at an edge of the barrier that fixes at least a portion of the battery cell.

9. The battery module as claimed in claim 8 , wherein the fixing portions extend in one direction from one surface of the barrier.

10. The battery module as claimed in claim 8 , wherein the fixing portions include first and second fixing portions, the first fixing portion extending perpendicularly from one surface of the barrier, and the second fixing portion extending perpendicularly from another surface of the barrier, the other surface being opposite to the one surface.

11. The battery module as claimed in claim 1 , further comprising a housing that accommodates the battery cells and the barrier.

12. The battery module as claimed in claim 11 , wherein the housing includes:

a pair of first and second end plates respectively disposed at outsides of the battery cells, and

connection members connecting the first and second end plates to each other.

13. The battery module as claimed in claim 12 , wherein the connection members include:

side members respectively supporting side surfaces of the battery cells, and

a bottom member supporting bottom surfaces of the battery cells.

14. The battery module as claimed in claim 1 , wherein the barrier is made of a material including at least one of Al, Cu, stainless steel, and alloys thereof.

15. The battery module as claimed in claim 5 , wherein the barrier includes a plurality of protruding portions thereon, the plurality of protruding portions being arranged on the barrier to symmetrically protrude away from opposite sides of the barrier toward the respective battery cells.