ENERGY STORAGE SYSTEM AND FIRE PROTECTION METHOD FOR ENERGY STORAGE SYSTEM

1 . An energy storage system, comprising:

a storage assembly, configured to store a battery cell; and

a fire prevention assembly, comprising a plate and a thermometric optical fiber disposed on the plate, wherein the plate is disposed opposite to the storage assembly, and the thermometric optical fiber is configured to sense a temperature of the battery cell so as to send a fire signal when the temperature of the battery cell reaches a threshold, wherein

the thermometric optical fiber is disposed on a side of the plate and extends along a curved path, the side being oriented toward the storage assembly.

2 . The energy storage system according to claim 1 , wherein a plurality of fixing pieces are disposed on the side of the plate, the side being oriented toward the storage assembly; and the plurality of fixing pieces are configured to provide a support for the curved extending of the thermometric optical fiber on the plate.

3 . The energy storage system according to claim 2 , wherein a plurality of the thermometric optical fibers are disposed on the plate.

4 . The energy storage system according to claim 1 , wherein the energy storage system further comprises a fire protection assembly, the fire protection assembly comprises a sprinkler head, and the sprinkler head is disposed corresponding to the storage assembly and configured to spray a fire-extinguishing liquid to the battery cell when the temperature of the battery cell reaches the threshold.

5 . The energy storage system according to claim 4 , wherein the fire protection assembly further comprises a fire protection tank, and the fire protection tank is configured to accommodate the fire-extinguishing liquid and receive the storage assembly that contains an abnormal-temperature battery cell, so as to submerge the battery cell in the fire-extinguishing liquid.

6 . The energy storage system according to claim 5 , wherein the fire protection tank comprises a tank body and a moving assembly, the tank body is configured to accommodate the fire-extinguishing liquid, the moving assembly is connected to the tank body and movable along an extension direction of the tank body, and the moving assembly is configured to move the storage assembly containing the abnormal-temperature battery cell into the tank body and submerge the storage assembly in the fire-extinguishing liquid.

7 . The energy storage system according to claim 6 , wherein a temperature sensor is disposed in the tank body and configured to detect a temperature of the fire-extinguishing liquid.

8 . The energy storage system according to claim 7 , wherein the energy storage system further comprises a stacking apparatus, and the stacking apparatus is movable relative to the energy storage assembly and configured to pick up the energy storage assembly and place the energy storage assembly into the moving assembly.

9 . The energy storage system according to claim 8 , wherein the energy storage system further comprises a control assembly; the control assembly is electrically connected to the fire prevention assembly, the fire protection assembly, and stacking apparatus and configured to receive the fire signal transmitted by the fire prevention assembly, control the corresponding sprinkler head to turn on or off, control the moving assembly to move or stop, and control the stacking apparatus to pick up the corresponding energy storage assembly and place the energy storage assembly into the moving assembly.

10 . The energy storage system according to claim 1 , wherein the storage assembly comprises a pallet and a plurality of partition plates, the plurality of partition plates are disposed on the pallet to form a plurality of accommodation chambers, and the accommodation chambers are configured to accommodate the battery cell.

11 . The energy storage system according to claim 1 , wherein the energy storage system further comprises a shelf, a plurality of storage assemblies and a plurality of ire prevention assemblies are accommodated in the shelf, and the plurality of storage assemblies are disposed corresponding to the plurality of fire prevention assemblies.

12 . A fire protection method for an energy storage system, comprising:

sensing, by a thermometric optical fiber, a temperature of a battery cell stored in a storage assembly, so as to send a fire signal when the temperature of the battery cell reaches a threshold; and

performing fire protection on the battery cell in the storage assembly upon receiving the fire signal, wherein

the thermometric optical fiber is mounted on a plate, and the plate is disposed opposite to the storage assembly.

13 . The fire protection method according to claim 12 , wherein the fire signal is received by a control assembly, and the step of performing, by the control assembly, fire protection on the battery cell in the storage assembly upon receiving the fire signal comprises:

receiving a first fire signal;

controlling a sprinkler head of a fire protection assembly to spray;

receiving a second fire signal;

controlling a stacking apparatus to relocate the corresponding storage assembly to a fire protection tank of the fire protection assembly; and

controlling the fire protection tank to perform fire protection, wherein

the first fire signal is a signal sent by the thermometric optical fiber upon detecting that the temperature inside the battery cell reaches the threshold, and the second fire signal is a signal received after the spraying as an instruction for the fire protection tank to perform fire protection.

14 . The fire protection method according to claim 13 , wherein the step of controlling the fire protection tank to perform fire protection comprises:

controlling a moving assembly to submerge the storage assembly in a tank body;

receiving a third fire signal; and

controlling the moving assembly to remove the storage assembly out of the tank body, wherein

the third fire signal is a temperature signal sent by a temperature sensor in the tank body or a received fire protection operation stoppage signal.