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Lithium ion battery fire-fighting liquid as well as preparation method and application thereof

A lithium-ion battery and fire-fighting liquid technology, which is applied in fire protection equipment and other directions, can solve the problems of narrow fire-extinguishing range, long fire-extinguishing period, low fire-extinguishing efficiency, etc., and achieves the effects of fast cooling rate, easy operation and increased visibility

Active Publication Date: 2021-04-20
南京锂泰新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Studies have shown that although these fire extinguishing agents can inhibit the fire spread of lithium-ion batteries to a certain extent, the fire extinguishing cycle is long, and they are accompanied by a certain resurgence phenomenon. There is no battery re-ignition phenomenon in ion battery fires. However, pure water mist is usually equipped with high-voltage equipment, which has defects such as narrow fire extinguishing range, high economic cost, and low fire extinguishing efficiency.

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  • Lithium ion battery fire-fighting liquid as well as preparation method and application thereof

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preparation example Construction

[0027] The invention also discloses a preparation method of lithium-ion battery fire-fighting liquid, comprising the following steps:

[0028] S1. Weigh the anion salt of 2,2,6,6-tetramethylpiperidine nitrogen oxide according to the proportion, dissolve it in tetraethylene glycol dimethyl ether, stir and dissolve in a blender;

[0029] S2. Weigh fluorocarbon surfactant, hydrocarbon surfactant, foaming agent, metal ion chelating agent, sodium chloride and urea according to the proportion and dissolve them in water, and stir to form a transparent and clear solution;

[0030] S3. Slowly add the mixed solution obtained in S1 into the aqueous solution prepared in S2, and stir until a transparent and clear solution is formed to obtain a lithium-ion battery fire-fighting liquid agent; assemble the prepared fire-fighting liquid into a high-pressure storage tank with a certain volume, and connect to The battery combustion box is equipped with a high-pressure water mist nozzle for batte...

Embodiment 1

[0032] Embodiment 1: A kind of lithium-ion battery fire-fighting fluid, prepared by the following method:

[0033] Dissolve 12% of nitrogen oxide anion salt in 15mL of tetraethylene glycol dimethyl ether, and magnetically stir for 30min to form a uniform solution; 5% of fluorocarbon surfactant, 0.5% of dodecylbenzenesulfonic acid Dissolve sodium, 1% dodecyl dimethyl betaine, 0.4% potassium N,N-piperazine dithiocarbamate, 0.03% sodium chloride and 2% urea in water, stir to dissolve , gradually add the prepared tetraethylene glycol dimethyl ether solution, stir evenly, and let stand for 4 hours.

[0034] The nitrogen oxide salt is tetrafluoroborate of 2,2,6,6-tetramethylpiperidine nitrogen oxide, and the fluorocarbon surfactant is perfluorohexyl alcohol polyoxyethylene ether.

Embodiment 2

[0035] Embodiment 2: A kind of lithium-ion battery fire-fighting fluid, prepared by the following method:

[0036] Dissolve 8% of the anion salt of nitrogen oxides in 15mL of tetraethylene glycol dimethyl ether, and stir well; mix 10% of fluorocarbon surfactant, 0.5% of sodium dodecylbenzenesulfonate, 1% Dodecyl dimethyl betaine, 0.4% potassium N,N-piperazine dithiocarbamate, 0.03% sodium chloride and 2% urea were dissolved in water, stirred and dissolved, and gradually added to prepare Good tetraethylene glycol dimethyl ether solution, after stirring evenly, let it stand for 4 hours.

[0037] The nitrogen oxide salt is perchlorate of 2,2,6,6-tetramethylpiperidine nitrogen oxide, and the fluorocarbon surfactant is perfluorohexyl alcohol polyoxyethylene ether.

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Abstract

The invention discloses a lithium ion battery fire-fighting liquid which is composed of the following raw materials in percentage by weight: 8-20% of anionic salt of 2,2,6,6-tetramethylpiperidinooxy, 2-10% of fluorocarbon surfactant, 0.2-0.8% of hydrocarbon surfactant, 0.8-5% of foaming agent, 0.4-0.7% of metal ion chelating agent, 10-20% of tetraethylene glycol dimethyl ether, 0.03% of sodium chloride, 2-5% of urea and the balance of water. The lithium ion battery fire-fighting liquid provided by the invention is characterized in that anionic salt of a nitrogen oxide capable of being oxidized and reduced is added, the anionic salt reacts with reducing gas during combustion to be reduced into a free radical scavenger of 2,2,6,6-tetramethylpiperidinooxy, hydroxyl radicals are quenched, and a chain combustion reaction is terminated; and meanwhile, the added fluorocarbon surfactant can remarkably reduce the surface tension of water, the introduced foaming agent forms a stable water film and covers the surface of the combustible, on one hand, the combustion temperature is reduced, and on the other hand, a formed water film can isolate oxygen and terminate combustion.

Description

technical field [0001] The invention belongs to the field of fire-fighting fluid technology, and in particular relates to a lithium-ion battery fire-fighting fluid and a preparation method and application thereof. Background technique [0002] Li-ion batteries play a vital role in applications such as energy storage systems, mobile electronics, power tools, aerospace, automotive and maritime. Compared with other battery technologies, Li-ion batteries have attracted interest from academia and industry due to their high power and energy density and lack of effects such as memory. With the large-scale construction and operation of electrochemical energy storage power stations, fires in energy storage power stations often occur; in addition, with the popularization of electric vehicles in China, some electric vehicles have also caught fire due to various reasons in recent years. Security risks. At the same time, due to the high fire temperature and intensity of lithium-ion bat...

Claims

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Application Information

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IPC IPC(8): A62D1/00
CPCY02E60/10
Inventor 黄志梅方淳黄云辉丁奕杨艳王天桃
Owner 南京锂泰新能源科技有限公司
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