A battery pack having improved heat dissipation characteristics. A battery pack includes a plurality of battery modules, each including a plurality of battery cells aligned in a direction, and a plurality of barriers, each being between a respective pair of adjacent battery cells of the plurality of battery cells and including a connection portion protruded to the outside of the adjacent battery cells. The battery pack further includes a heat dissipation member connected to connection portions of the plurality of connection portions, and a heat conducting member connected to the heat dissipation member.
1. A battery pack comprising:
a plurality of battery modules, each comprising:
a plurality of battery cells aligned in a direction; and
a plurality of barriers, each being between a respective pair of adjacent battery cells of the plurality of battery cells and comprising a connection portion protruded to the outside of the adjacent battery cells, a single battery cell of the plurality of battery cells being between a pair of adjacent barriers of the plurality of barriers;
a plurality of heat dissipation members connected to connection portions of barriers of the plurality of barriers of respective ones of the plurality of battery modules, each of the plurality of heat dissipation members configured to pass a coolant therethrough; and
a heat conducting member connected to each of the plurality of heat dissipation members at a respective fastening member,
wherein each of the connection portions has an opening formed therein, and each of the plurality of heat dissipation members passes through the openings of the plurality of barriers of the respective battery module.
2. The battery pack according to claim 1 , further comprising a housing accommodating the battery modules and the heat dissipation members.
3. The battery pack according to claim 2 , further comprising a coolant circulating in the heat conducting member and the housing, wherein the coolant comprises at least one of a fluid or a gas.
4. The battery pack according to claim 2 , wherein the heat conducting member is inside or outside of the housing.
5. The battery pack according to claim 2 , wherein adjacent battery modules of the plurality of battery modules are accommodated in the housing by being aligned so that side surfaces of outermost battery cells of the adjacent battery modules are opposite to each other.
6. The battery pack according to claim 5 , further comprising another heat dissipation member, wherein the adjacent battery modules are connected to each other via a respective heat dissipation member of the plurality of heat dissipation members and the another heat dissipation member.
7. The battery pack according to claim 6 , further comprising a connector connecting the respective heat dissipation member and the another heat dissipation member.
8. The battery pack according to claim 7 , wherein the connector comprises heat conductive material.
9. The battery pack according to claim 7 , wherein the connector is configured as a metal rod or a metal mesh.
10. The battery pack according to claim 1 , wherein the fastening member comprises a heat conductive material.
11. The battery pack according to claim 1 , wherein the barrier comprises a metal, and a surface of the barrier is anodized.
12. The battery pack according to claim 1 , wherein the barrier comprises a plastic material.
13. The battery pack according to claim 1 , wherein the heat conducting member comprises an outer case, and a porous plate within the outer case, the porous plate having micro-pores.
14. The battery pack according to claim 13 , wherein the porous plate comprises a metallic material sintered to form the micro-pores therein.
15. The battery pack according to claim 13 , wherein the heat conducting member has a void inside the porous plate.
16. The battery pack according to claim 1 , wherein the heat conducting member comprises at least one through-bole portion.
17. The battery pack according to claim 16 , wherein the at least one through-hole portion comprises first and second through-hole portions, the first through-hole portion being an inlet through which a coolant for cooling the battery cells is flowed into the heat conducting member, and the second through-hole portion being an outlet through which the coolant flowed through the first through-hole portion is discharged from the heat conducting member.