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Lithium ion battery fire extinguishing agent and preparation method and application thereof

A lithium-ion battery and fire extinguishing agent technology, which is applied in fire prevention equipment, fire rescue, etc., can solve the problems that lithium-ion battery fires do not have applicability, cannot effectively suppress lithium-ion battery fires, and corrode lithium-ion batteries. Secondary damage, prevention of re-ignition of fire, and improvement of fire extinguishing effect

Active Publication Date: 2021-09-07
SHENZHEN POWER SUPPLY BUREAU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lithium-ion battery is a kind of high-energy material, which has the characteristics of strong combustion, fast thermal diffusion, and strong toxicity. Lithium-ion battery fires are very different from ordinary fires. As a result, existing fire extinguishing agents cannot effectively suppress lithium-ion battery fires. It will re-ignite many times, and it is not applicable to lithium-ion battery fires
The commonly used fluorine-containing fire extinguishing agents are usually corrosive during the fire extinguishing process, which will corrode lithium-ion batteries and cause secondary damage

Method used

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  • Lithium ion battery fire extinguishing agent and preparation method and application thereof
  • Lithium ion battery fire extinguishing agent and preparation method and application thereof
  • Lithium ion battery fire extinguishing agent and preparation method and application thereof

Examples

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preparation example Construction

[0043] Another embodiment of the present invention also provides the preparation method of the above-mentioned lithium ion battery fire extinguishing agent, comprising the following steps:

[0044] The fire extinguishing material, the cooling material and the anticorrosion material are evenly mixed to obtain the lithium ion battery fire extinguishing agent.

[0045] Another embodiment of the present invention also provides a lithium-ion battery fire extinguisher, which is loaded with the above-mentioned lithium-ion battery fire extinguishing agent.

Embodiment 1

[0048] This embodiment provides a special fire extinguishing agent for lithium ion batteries, including perfluorohexanone, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether (abbreviated as HFE458 ) and montmorillonite loaded with activated alumina and urea, and the mass ratio of perfluorohexanone, HFE458 and montmorillonite loaded with activated alumina and urea is 1:1:0.2; activated alumina in montmorillonite The loading of urea is 4wt%, and the loading of urea is 8wt%.

[0049] The preparation method of this special fire extinguishing agent for lithium ion battery comprises the steps:

[0050] (1) Mix the fire extinguishing material perfluorohexanone and the cooling material HFE458 according to the mass ratio of 1:1, and stir evenly to obtain the compound fire extinguishing agent raw material;

[0051] (2) Disperse montmorillonite in water, then add aluminum isopropoxide, control the mass ratio of montmorillonite, water and aluminum isopropoxide to 6:20:1, carry out ...

Embodiment 2～10

[0065] Embodiments 2 to 10 respectively provide a lithium ion battery fire extinguishing agent. Compared with Example 1, the difference is that the components and mass ratios of the compound substances in the compound fire extinguishing agent raw materials are changed, and the preparation of anti-corrosion materials All consistent with embodiment 1 with corresponding addition amount, do not repeat them here. The composition and mass ratio of the compound fire extinguishing agent raw materials corresponding to Examples 2-10 are shown in Table 3.

[0066] Table 3 The raw material components of the compound fire extinguishing agent in the special fire extinguishing agent for lithium-ion batteries provided in Examples 2-10 and their corresponding mass ratios

[0067] Example Components of compound fire extinguishing agent raw materials and their corresponding mass ratios Example 2 Perfluorohexanone: pentafluorobutane = 0.5:1 Example 3 Perfluorohexanone:HF...

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Abstract

The invention provides a lithium ion battery fire extinguishing agent which comprises a fire extinguishing material, a cooling material and an anti-corrosion material. The mass ratio of the fire extinguishing material to the cooling material to the anti-corrosion material is (0.5-2): (0.2-2): (0.1-0.3). The fire extinguishing material is a fluorine-containing organic matter of which the vaporization heat does not exceed 100kJ / kg; the cooling material is a fluorine-containing organic matter of which the vaporization heat is higher than 100kJ / kg; and the anti-corrosion material is montmorillonite loaded with activated aluminum oxide and urea. Through reasonable compounding, the lithium ion battery fire extinguishing agent has a suitable boiling point, high vaporization heat and high specific heat, has fire extinguishing and cooling performance, can prevent re-combustion while effectively and rapidly extinguishing a lithium ion battery fire, and does not corrode electrical equipment and cause secondary damage in the fire extinguishing process.

Description

technical field [0001] The invention relates to the technical field of fire safety, in particular to a lithium-ion battery fire extinguishing agent and its preparation method and application. Background technique [0002] Lithium-ion battery is currently the commercial battery with the highest energy density, which has the advantages of long cycle life, no memory effect, and no toxic substances. Its application involves many fields of production and life; such as mobile phones, computers, new energy vehicle power systems, and smart grid energy storage, which is getting more and more attention now. However, while lithium-ion batteries benefit mankind, safety issues have become increasingly prominent. [0003] At present, there is no special fire extinguishing agent for lithium-ion batteries. Lithium-ion battery is a kind of high-energy material, which has the characteristics of strong combustion, fast thermal diffusion, and strong toxicity. Lithium-ion battery fires are ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A62D1/00A62C3/16
CPCA62D1/00A62D1/005A62C3/16Y02E60/10
Inventor 杜进桥郑耀东田杰李艳曹元成张炜鑫程时杰
Owner SHENZHEN POWER SUPPLY BUREAU
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