Fire extinguishing plant of energy storage system

Abstract

The invention discloses a fire extinguishing plant of an energy storage system, comprising a sprinkler device, a smoke drying device, a water retaining device, and a water drainage device, wherein, the sprinkler device is used for spraying running water at the ablaze battery module, the smoke drying device is used for discharging smoke on the fire point and drying the battery module when water spraying stops, and the water retaining device is arranged opposite to the sprinkler device for blocking the water sprayed from the sprinkler device to prevent the water from flowing around any region outside the ablaze battery module and allowing the water to enter the water drainage device to discharge. According to the invention, water is used for fire extinguishment and simultaneously smoke discharge is carried out, thus the speed of fire extinguishment is fast, the smoke is little, inflammable gases released from the battery can be rapidly removed by timely smoke discharge in the fire extinguishing process, the danger of gas suffocation is avoided, the explosion risk caused by accumulation of inflammable gases injected by the battery in the process of using gas for fire extinguishment is avoided, and the electric shock caused by chaotic water flow is effectively avoided by the water retaining device and the water drainage device.

Description

Technical field

[0001] The invention relates to the field of fire protection of energy storage systems, and more specifically, to a fire extinguishing device for energy storage systems with high reliability. Background technique

[0002] At present, grid energy storage systems, small energy storage systems in buildings, UPS (Uninterruptible Power System, uninterruptible power supply) energy storage systems, etc. are all composed of lithium battery packs. Existing lithium batteries will continue to release combustible gas for a period of time under abnormal conditions, such as a 50AH single lithium battery made of lithium iron phosphate. In the event of thermal runaway or abnormal short circuit, the volume can expand up to 50%. %, the thickness can increase by 50%~70% at most. After the internal pressure reaches the safety threshold of 0.4~0.6MPa, the gas will break through the safety valve and maintain the release jet for about 20 minutes. The jetted gas is mainly composed of met...

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