Unit rack for power storage and power storage apparatus comprising the same

1. A unit rack for power storage, comprising:

a plurality of cell modules which are series- or parallel-connected with each other by connection lines;

a housing for accommodating the cell modules;

a receiving part for a circuit breaker, provided at the housing, and having a ground clearance higher than the highest ground clearance of the cell modules;

the circuit breaker received in the receiving part and connected between the connection lines; and

a receiving part cover for closing the receiving part,

wherein the housing is provided with a penetrating hole which connects the receiving part with a receiving space for the cell modules, and the connection lines pass through the penetrating hole,

wherein the receiving part has a waterproofing structure, and

wherein the housing has at least one slit formed on a surface thereof to introduce external air.

2. The unit rack for power storage according to claim 1 , wherein the cell modules comprise a plurality of unit cells which are series- or parallel-connected with each other.

3. The unit rack for power storage according to claim 2 , wherein each of the unit cells is a secondary battery or capacitor being repeatedly charged and discharged.

4. The unit rack for power storage according to claim 1 , wherein the housing is made of metal or plastic.

5. The unit rack for power storage according to claim 1 , wherein the receiving part is positioned in a top of the housing.

6. The unit rack for power storage according to claim 1 , wherein the receiving part is positioned in a side of the housing.

7. The unit rack for power storage according to claim 1 , which further comprises a gasket for the receiving part cover, interposed between the receiving part and the receiving part cover.

8. The unit rack for power storage according to claim 7 , wherein the gasket for the receiving part cover is interposed between an inner side of the receiving part and an outer side of the receiving part cover.

9. The unit rack for power storage according to claim 1 , further comprising a gasket for the penetrating hole, interposed between an inner side of the penetrating hole and the connection lines.

10. The unit rack for power storage according to claim 1 , wherein the circuit breaker comprises at least one selected from a fuse, a mechanical relay and an electronic relay.

11. The unit rack for power storage according to claim 1 , wherein the receiving part cover is provided with a locking member.

12. A power storage apparatus comprising the unit rack for power storage according to claim 1 in a plurality, wherein the plurality of unit racks are series- or parallel-connected with each other.

13. A unit rack for power storage, comprising:

a plurality of cell modules which are electrically connected with each other by connection lines;

a housing for accommodating the cell modules;

a receiving part for a circuit breaker, provided at the housing, and having a ground clearance higher than the highest ground clearance of the cell modules;

the circuit breaker received in the receiving part and connected between the connection lines; and

a receiving part cover for closing the receiving part,

wherein the housing is provided with a penetrating hole which connects the receiving part with a receiving space for the cell modules, and the connection lines pass through the penetrating hole,

wherein ends of the connection lines are connected to a bottom surface of the circuit breaker,

wherein the receiving part has a waterproofing structure, and

wherein the housing has at least one slit formed on a surface thereof to introduce external air.