Patent ID: 8558507

Claim:
A secondary battery storage system rack, comprising: a circuit block which is connected to an electric power line for exchanging electric power externally; a secondary battery block which is connected to the circuit block and which has a larger mass than the circuit block; a storage body unit which stores, inside, the circuit block and the secondary battery block; and a fire extinguisher device which stores an extinguishing agent and which supplies the extinguishing agent to the secondary battery block when fire extinction is necessary, wherein the fire extinguisher device, the circuit block, and the secondary battery block are placed in one line along a direction of gravitational force, with the fire extinguisher device placed above the circuit block and the secondary battery block placed below the circuit block, and the circuit block comprises: an electric power distribution unit which converts input electric power which is input from the electric power line into charge electric power for charging the secondary battery block and converts discharge electric power discharged from the secondary battery block into output electric power which is output from the electric power line; and a disconnection circuit which is placed below the electric power distribution unit and which disconnects charging and discharging of the secondary battery block.