Locomotive lithium battery energy storage device fire preventing and extinguishing device and method

Abstract

The invention discloses a locomotive lithium battery energy storage device fire preventing and extinguishing device and method. Nitrogen in air is separated by a nitrogen making machine, the automation degree is high, operation is simple, and cost is saved; the nitrogen made by the nitrogen making machine is used for generating two-phase flow thin water mist, water is saved, the saving efficiencyis high, and re-ignition of a lithium battery energy storage device can be prevented; meanwhile, the nitrogen making machine in the scheme makes full use of the nitrogen in air, the external nitrogencost is saved, the recycling rate is high, the lithium battery energy storage device can work in an inert environment, and the life of the energy storage device is significantly prolonged.

Description

technical field [0001] The invention relates to the technical field of fire prevention and extinguishing of a lithium battery energy storage device, in particular to a fire prevention device and method for a lithium battery energy storage device of a locomotive. Background technique [0002] my country has a vast territory, a huge population density, and a lot of transportation needs. In recent years, high-speed power group rail transit (high-speed train) has the advantages of large carrying capacity, fast travel speed, high safety, high degree of environmental protection, small energy demand and narrow land occupation, and has gradually become the preferred mode of national travel. [0003] However, high-speed trains also face some problems: on the one hand, the dependence on the catenary is too high, and it is difficult and costly to erect the catenary or lay electrified seamless steel rails, especially difficult to cover the catenary in mountainous and hilly areas; on the...

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Problems solved by technology

[0003] However, high-speed trains also face some problems: on the one hand, the dependence on catenary is too high, and it is difficult and costly to erect catenary or lay electrified seamless steel rails, especially difficult to cover catenary in mountainous and hilly areas; on the other hand , the high-speed rail power supply mode is single, and the catenary or the traction power supply system in the locomotive fails, the locomotive can only stay on the spot, and the degree of danger is high

However, there are also safety hazards in the large-scale application of lithium battery energy storage devices. Once thermal failure or thermal runaway occurs in lithium battery energy storage devices, it is easy to cause fire or explosion. Severe, the fire spreads extremely fast, and the difficulty of fire fighting and personnel evacuation is also greater

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