Power storage device and power storage system

1. A power storage device, comprising:

a chassis member which is provided with a main surface portion, and at least first and second side surface portions formed to extend from each of side edges of the main surface portion substantially vertically to the main surface portion;

a power inlet capable of inputting either of DC power or AC power;

one or plural power outlets to which a plug of electronic equipment is capable of being connected;

a battery module to which one or plural secondary batteries are connected and which is charged by being supplied with the power input from the power inlet;

a power conversion device which is electrically connected to the battery module, and which is capable of converting the power input from the battery module into desired power and outputs the converted power to the one or plural power outlets;

a housing which contains the chassis member, the power inlet, the one or plural power outlets, the battery module and the power conversion device;

wherein

the power conversion device is fixed to one surface of the main surface portion of the chassis member;

the battery module is fixed to the opposite side of the power conversion device with the chassis member therebetween; and

the first and second side surface portions of the chassis member is fixed to an upper surface and a lower surface of the housing respectively.

2. The power storage device according to claim 1 , wherein:

a space surrounded by the chassis member and the housing is formed.

3. The power storage device according to claim 1 , further comprising protrusions formed by bending each of side edges of the first main surface portion of the chassis member, wherein:

the protrusions are made to protrude in the plane direction of one surface of the first main surface portion.

4. The power storage device according to claim 1 , wherein the housing is made from a metal plate.

5. The power storage device according to claim 4 , wherein the housing is made from an aluminum plate.

6. The power storage device according to claim 1 , wherein the first main surface portion of the chassis member and the battery module are in close contact with each other via a heat-radiation member.

7. The power storage device according to claim 6 , wherein: the heat-radiation member is a part of the battery module; and the heat-radiation member is provided to be exposed to the battery module on the chassis member side.

8. The power storage device according to claim 7 , wherein the heat-radiation member is made of silicon.

9. The power storage device according to claim 1 , wherein the power conversion device is an inverter which is capable of converting DC power output from the battery module into AC power, and is capable of outputting the AC power to the one or plural power outlets.

10. The power storage device according to claim 1 , wherein plural protrusions are provided in the other surface of the first main surface portion of the first chassis member.

11. The power storage device according to claim 1 , wherein one or plural handles are provided at a part of the housing.

12. A power storage system, wherein power is supplied from the power storage device according to claim 1 or power is supplied to the power storage device from a power generation device or a power network.

13. The power storage device according to claim 1 , wherein the housing has a plurality of openings.

14. The power storage device according to claim 13 , wherein at least one opening of the plurality of openings is an opening for exposing the power inlet to the outside.

15. The power storage device according to claim 13 , wherein at least one opening of the plurality of openings is an opening for exposing the power outlet to the outside.