Battery rack and power storage apparatus including the same

1. A battery rack, the battery rack comprising:

a base plate forming a bottom surface;

a main frame combined to the base plate and extending in a height direction to form a wall structure for supporting side portions of a plurality of battery modules;

a top plate combined to an uppermost portion of the main frame to form a ceiling; and

a pair of vertical beams spaced apart from each other in a length direction of the base plate and each extending in a height direction,

wherein at least one of the top plate and the base plate is provided in a plate body shape including a bead, and

wherein the base plate and the top plate each have a quadrangular plate shape and comprise a side protruding portion protruding at a corner region in a width direction, and

wherein the pair of vertical beams each have a cross-section in a “ ” shape such that both end portions thereof are combined to the base plate and the top plate while surrounding the side protruding portion.

2. The battery rack of claim 1 , wherein the bead is provided on both the top plate and the base plate, and

wherein the top plate and the base plate are rectangular plate bodies and the bead is formed in an X shape crossing each of the rectangular plate bodies.

3. The battery rack of claim 1 , wherein the main frame comprises a first main frame and a second main frame, which are spaced apart from each other by a width of the plurality of battery modules, and

wherein each of the first main frame and the second main frame comprises:

a plurality of guide beams combined to the pair of vertical beams at regular intervals along the height direction and provided to support a bottom corner region of the plurality of battery modules.

4. The battery rack of claim 1 , wherein a wall mount member is combined to one of the pair of vertical beams in the first and second main frames.

5. The battery rack of claim 4 , wherein the wall mount member is integrally combined to one of the pair of vertical beams and the side protruding portion.

6. The battery rack of claim 4 , wherein the wall mount member comprises an elastic body to elastically support the main frame with respect to a wall surface.

7. A battery rack, the battery rack comprising:

a base plate forming a bottom surface;

a main frame combined to the base plate and extending in a height direction to form a wall structure for supporting side portions of a plurality of battery modules;

a top plate combined to an uppermost portion of the main frame to form a ceiling;

a pair of vertical beams spaced apart from each other in a length direction of the base plate and each extending in a height direction; and

a wall mount member attached to the main frame,

wherein the wall mount member comprises:

a spring to elastically support the main frame with respect to a wall surface;

a rack fixing portion combined to a first end portion of the spring and having a screw thread formed therein; and

a wall surface fixing portion combined to a second end portion of the spring and comprising a fastening unit screw-combinable to the wall surface,

wherein one of the pair of vertical beams further comprises a wall mount fastening portion screw-combined to the rack fixing portion at one side.

8. A battery rack, the battery rack comprising:

a base plate forming a bottom surface;

a main frame combined to the base plate and extending in a height direction to form a wall structure for supporting side portions of a plurality of battery modules;

a top plate combined to an uppermost portion of the main frame to form a ceiling; and

a wall mount member attached to the main frame,

wherein the wall mount member comprises:

a rack fixing portion attached to the main frame; and

a wall surface fixing portion spaced from and attached to the rack fixing portion,

wherein the rack fixing portion and the wall surface fixing portion of the wall mount member are provided to be relatively rotatable with respect to each other.

9. A power storage apparatus comprising:

the battery rack according to claim 1 ; and

a plurality of battery modules stacked in the battery rack in multiple stages.

10. The battery rack according to claim 7 , further comprising a plurality of battery modules stored in the main frame.

11. The battery rack according to claim 10 , wherein the spring is attached to and extends outwardly from one of the vertical beams.

12. The battery rack according to claim 7 , wherein the spring is attached to and extends outwardly from one of the vertical beams.

13. The battery rack according to claim 8 , further comprising a plurality of battery modules stored in the main frame.

14. The battery rack according to claim 8 , further comprising a spring between the rack fixing portion and the wall surface fixing portion, a first end of the spring connected to the rack fixing portion and a second end of the spring connected to the wall surface fixing portion.