Cooling member of improved assembly efficiency and battery module employed with the same

1. A cooling member mounted at a top or a bottom of a battery module configured to have a structure in which a plurality of unit modules, each of which comprises one or more battery cells, is arranged in a lateral direction or a battery pack configured to have a structure in which a plurality of battery modules is arranged in a lateral direction to remove heat generated from the battery cells during charge and discharge of the battery cells, the cooling member comprising:

a thermal conduction member disposed at the top or the bottom of the battery module or the battery pack, the thermal conduction member comprising an upper plate and a lower plate, which are separated from each other; and

a coolant conduit comprising a first conduit and a second conduit configured to have a hollow structure in which a coolant flows, the first conduit being disposed between the upper plate and the lower plate, the first conduit having a constant thickness, the first conduit having a first end and a second end, the first end and the second end extending in opposite directions from each other, the second conduit being integrally connected to the first conduit, the second conduit being disposed at a front and a rear of the battery module or the battery pack,

wherein cooling fins are disposed between the respective unit modules in a state in which opposite sides of each of the cooling fins are in tight contact with corresponding ones of the unit modules,

wherein the cooling fins are bent such that the cooling fins contact the thermal conduction member in a surface contact fashion,

wherein grooves having a shape corresponding to the first conduit are formed at portions of the upper plate and the lower plate at which the first conduit is mounted in a longitudinal direction of the thermal conduction member,

wherein each of the cooling fins is formed in a “ ” shape or a “T” shape in vertical section and each of the cooling fins is formed in a rectangular shape in horizontal section, and

wherein each of the battery cells is a plate-shaped battery cell.

2. The cooling member according to claim 1 , wherein the first conduit comprises two or more pipes.

3. The cooling member according to claim 1 , wherein the second conduit has a greater diameter than the first conduit.

4. The cooling member according to claim 1 , wherein the first conduit and the second conduit are formed in a circular shape in vertical section.

5. The cooling member according to claim 1 , wherein the coolant conduit is formed of a corrosion-resistant material.

6. The cooling member according to claim 1 , wherein the thermal conduction member is a heat sink.

7. The cooling member according to claim 1 , wherein the thermal conduction member is provided on a per battery module or battery pack basis.

8. The cooling member according to claim 1 , wherein each of the cooling fins is formed of a heat conductive metal plate.

9. The cooling member according to claim 1 , wherein the plate-shaped secondary battery is a pouch-shaped secondary battery configured to have a structure in which an electrode assembly of a cathode/separator/anode structure is mounted in a battery case formed of a laminate sheet comprising a resin layer and a metal layer.

10. The cooling member according to claim 1 , wherein the coolant is water.

11. A battery module comprising a cooling member according to claim 1 .

12. A battery pack comprising a plurality of battery modules according to claim 11 , wherein the battery modules are arranged in a lateral direction.

13. The battery pack according to claim 12 , wherein the battery pack is used in an electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, or a power storage device.