Lithium-ion battery fire extinguishing agent and preparation method thereof

Abstract

The invention discloses a lithium-ion battery fire extinguishing agent and a preparation method thereof, and belongs to the technical field of fire extinguishing agents. The lithium-ion battery fire extinguishing agent is prepared from the following components in percentage by weight: 10-20% of dodecyl fluoride-2-methyl-3-pentanone, 15-35% of fluorocarbon surfactants, 10-15% of glycol, 1-3% of ethanol, 0.5-3% of polypropylene acid, and the balance of water. The preparation method of the lithium-ion battery fire extinguishing agent is simple and easy to operate, used components have high safety, and damage to environments and human bodies is not prone to being left; and according to the lithium-ion battery fire extinguishing agent, the dodecyl fluoride-2-methyl-3-pentanone and water vapor are gasified by absorbing heat, the temperature of ignition positions is lowered, the re-ignition probability of lithium battery fire disasters is reduced, flame can be effectively coved through cooperation with foam, the problem of contents flying out when a lithium battery burns is solved, the possibility of new ignition point generation is reduced, and the spread of the lithium battery fire disasters is inhibited.

Description

Technical field [0001] The invention belongs to the technical field of fire extinguishing agents, and specifically relates to a lithium ion battery fire extinguishing agent and a preparation method thereof. Background technique [0002] With the application and promotion of clean energy, the application of lithium-ion batteries has become more and more widespread, such as common electric bicycles and electric vehicles. Lithium-ion batteries have the advantages of large capacity, long service life, and stable charge and discharge performance. However, during the use of lithium-ion batteries, there are also potential safety hazards that may easily catch fire. [0003] Lithium-ion batteries do not have a mechanism to release excess electric energy into heat after overcharging, so once overcharging, it will bring a lot of safety problems. The thermal runaway process of lithium-ion batteries is mainly the combustion reaction between the positive electrode and the electrolyte. There is...

AI Technical Summary

Problems solved by technology

The thermal runaway process of lithium-ion batteries is mainly the combustion reaction between the positive electrode and the electrolyte. There is no free metal lithium in the lithium-ion battery. When the lithium-ion battery catches fire, the metal fire extinguishing method alone cannot obtain a good fire extinguishing effect.

At the same time, when the lithium battery generates heat or burns, oxygen evolution will occur and a large amount of heat will be generated. Therefore, the simple fire extinguishing method of isolating oxygen cannot obtain a good fire extinguishing effect.