Fire extinguishing system for energy storage units of lithium batteries

Abstract

The invention relates to a fire extinguishing system for energy storage units of lithium batteries. The fire extinguishing system mainly comprises an automatic fire alarm system, a gas fire extinguishing system, a fire extinguishing linkage control device, a fire emergent broadcasting and fire extinguishing special telephone device. Fire extinguishing devices of the fire extinguishing system can be automatically or manually started, the automatic starting is triggered mainly by a fire alarm control unit, the fire alarm control unit can receive triggering signals input by a battery management system and a detection alarm, when fire alarm conditions are met, starting signals are output to a gas fire extinguishing controller, and a fire extinguishing device is started to spray a fire extinguishing agent to the energy storage units; when an operator finds fire behavior in a protective zone, a start button outside the protective zone or on the gas fire extinguishing controller can be manually pressed down, and the manual operation of the fire extinguishment system is realized. Specific to multiple fire spraying characteristics of the lithium batteries, the two sets of fire extinguishing devices of the fire extinguishing system share one fire extinguishing cabinet, and the fire extinguishment protection of the two energy storage units of the lithium batteries is realized. The two sets of fire extinguishing devices are independent of each other and spare to each other, and the whole fire extinguishing system has a secondary fire extinguishment function.

Description

technical field [0001] The invention belongs to the technical field of safety and relates to a fire-fighting system, in particular to a fire-fighting system capable of protecting two lithium-based battery energy storage units and having a secondary fire-extinguishing function. Background technique [0002] The fire protection system is mainly composed of automatic alarm system, fire extinguishing and linkage control system, etc. It is an important technology in the field of fire prevention and control. The two core functions of the fire protection system: one is to detect the fire alarm information in the fire prevention area in a timely and accurate manner, and send out an alarm signal; the other is that the fire extinguishing equipment can efficiently extinguish the fire area. Lithium-based batteries are an ideal choice for battery energy storage technology in power systems, and are widely used in the construction of battery energy storage stations. Lithium-based battery ...

AI Technical Summary

Problems solved by technology

Due to the complexity of the fire scene, especially due to the frequent occurrence of non-surface fires in the lithium-based battery energy storage unit, it is difficult to achieve effective extinguishment by one-time fire extinguishing technology, and at the same time, recombustion (secondary fire) is very easy to occur after fire extinguishing

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