Large-sized energy storage power battery stack fire extinguishing system and fire extinguishing method thereof

Abstract

The invention discloses a large-sized energy storage power battery stack fire extinguishing system and a fire extinguishing method thereof and belongs to the field of large-sized energy storage powerbattery stack fire extinguishing. The large-sized energy storage power battery stack fire extinguishing system comprises a battery stack fire monitoring alarm and control module, a water pump module,a thermosetting gel additive, a high boiling point halogenated hydrocarbon additive, an additive mixing module, a zone control module and a fire extinguishing nozzle; an output end of the additive mixing module is connected with an input end of the zone control module; and an input end of the fire extinguishing nozzle is connected with an output end of the zone control module. According to the large-sized energy storage power battery stack fire extinguishing system, an adopted high boiling point halogenated hydrocarbon gas fire extinguishing agent is clean and environmentally friendly and hasno harm to an atmospheric ozone layer. According to the large-sized energy storage power battery stack fire extinguishing system, as the thermosetting gel additive is dissolved in the water at the room temperature to form a thermosetting gel additive aqueous solution, and the thermosetting gel additive generates a gelatination phenomenon to cover and coat the surface of an inflamer in the form ofgels; and therefore, long-distance cooling is realized to inhibit battery chemical combustion reaction so as to stop secondary out-of-control of a battery.

Description

technical field [0001] The invention belongs to the field of fire extinguishing of large energy storage power battery stacks, and in particular relates to a large energy storage power battery stack fire extinguishing system and a fire extinguishing method thereof. Background technique [0002] The main reasons for the fire and explosion of the power battery include overcharging, short circuit, heating and so on. In recent years, fires in large-scale energy storage power battery stacks have occurred frequently. For example, in July 2018, a chain explosion and a major fire occurred in the batteries of wind power storage equipment in Yeongam, South Korea. In September 2018, a fire broke out in an energy storage project in Jiangsu, causing huge losses. Therefore, there is an urgent need to study fire control and fire extinguishing methods and devices for large-scale energy storage power battery stacks to ensure personal and property safety. [0003] The United States and Europ...

AI Technical Summary

Problems solved by technology

[0005] Traditional gaseous fire extinguishing agents such as heptafluoropropane only have a chemical flame retardant effect and do not have a cooling function. It is difficult to continuously extinguish the fire of an endogenous chemical reaction type such as an energy storage battery stack.

The current fire control and fire extinguishing methods have weak anti-misoperation capabilities. After the system malfunctions, a large amount of fire extinguishing agent may cause adverse effects on large-scale power supply equipment such as energy storage battery stacks.

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