Battery rack

1. A battery rack comprising:

a housing; and

a plurality of battery modules stacked inside the housing, each battery module having a plurality of battery submodules stacked next to each other;

wherein each of the plurality of battery submodules comprises a fixing frame, the fixing frame comprising:

a first fixing frame configured to fix and support at least two cooling members arranged in a direction perpendicular to a direction in which the plurality of battery submodules are stacked;

a second fixing frame configured to be coupled with the first fixing frame so as to support at least two battery cells arranged in the direction perpendicular to the direction in which the plurality of battery submodules are stacked, and

wherein each of the at least two cooling members includes a contact part which contacts a corresponding one of the at least two battery cells and an exposed part which is exposed to ambient for disposing heat generated from the corresponding one of the at least two battery cells via the contact part and the exposed part to the ambient.

2. The battery rack according to claim 1 ,

the exposed part extends from at least one end of the contact part at a predetermined angle with respect to the contact part.

3. The battery rack according to claim 2 , wherein the exposed parts are exposed to at least one surface of each of the plurality of battery modules.

4. The battery rack according to claim 1 , wherein the number of the cooling members corresponds to the number of battery cells which are in contact with one side of the at least one cooling member of the plurality of battery cells.

5. The battery rack according to claim 1 , wherein the fixing frame is configured to fix and support the at least two cooling members and the at least two battery cells.

6. The battery rack according to claim 1 , wherein each of the plurality of battery modules comprises at least one fixed beam configured to fix and support the plurality of stacked battery submodules.

7. The battery rack according to claim 1 , wherein each of the plurality of battery modules further comprises a protective cover unit configured to protect the plurality of stacked battery submodules, and

the protective cover unit comprises a front cover unit and a rear cover unit, which are located on both sides among outer surfaces of the plurality of battery submodules in a direction in which the plurality of battery submodules are stacked, and side cover units located on sides from which electrode tabs of the battery submodules protrude.

8. The battery rack according to claim 7 , wherein each of the plurality of battery modules comprises at least one latch screw which is coupled to the front cover unit and includes a latch groove formed by cutting away at least a part of an outer peripheral surface thereof inward.

9. The battery rack according to claim 7 , wherein each of the plurality of battery modules comprises a grip groove formed by cutting away at least a part of the side cover unit toward the battery submodule.

10. The battery rack according to claim 1 , wherein each of the plurality of battery modules comprises elastic pads each of which is interposed between one or more battery submodules adjacent to each other in the plurality of battery submodules.

11. The battery rack according to claim 1 , further comprising: a cooling fan located at an upper or a lower side of the plurality of stacked battery modules to dissipate heat generated from the plurality of battery modules.

12. The battery rack according to claim 11 , wherein the plurality of battery modules are stacked at a predetermined distance, and

the predetermined distance is gradually increased from one side of the upper and lower sides, in which the cooling fan is located, toward the other side.

13. The battery rack according to claim 11 , wherein the cooling fan is located at one side of the direction in which the battery submodules are stacked at the upper or lower side of the plurality of stacked battery modules, and

a closed surface on a side, in which the cooling fan is located among peripheral surfaces perpendicular to the direction in which the plurality of battery modules are stacked, is spaced apart from the plurality of battery modules at a predetermined distance.

14. The battery rack according to claim 1 , wherein battery cells facing each other of the plurality of battery cells on both sides of the at least one cooling member in each of the battery submodules are connected to each other in series or in parallel, and

the plurality of battery submodules in each of the battery modules are connected to each other in series or parallel to.