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A material and preparation method for preventing lithium battery and its packaging from burning

A packaging and lithium battery technology, which is applied to battery pack parts, electrical components, chemical instruments and methods, etc., can solve the problems that fire extinguishing treatment measures cannot be implemented, and achieve the effect of slow heat transfer and convenient use

Active Publication Date: 2019-01-08
THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"Extinguishing smoke" is another key factor in the emergency treatment of lithium battery combustion. Only when the smoke is controlled and quickly "disappears" can the follow-up treatment measures be carried out effectively. Any effective None of the fire extinguishing measures can be implemented

Method used

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  • A material and preparation method for preventing lithium battery and its packaging from burning
  • A material and preparation method for preventing lithium battery and its packaging from burning
  • A material and preparation method for preventing lithium battery and its packaging from burning

Examples

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Effect test

Embodiment 1

[0050] A material for preventing combustion of a lithium battery and its package includes a composite film, the composite film comprising two layers of polymer films and a layer of hydrogel located between the two layers of films.

[0051] Compared with the existing invention, the present invention does not require additional monitoring equipment, and the composite film of the present invention has the characteristics of convenience and flexibility, and can be made into various suitable packaging forms according to actual needs. The composite membrane of the present invention has the functions of flame retardant and fire extinguishing, and the composite membrane itself has flame retardant properties. When the membrane is destroyed, the gel inside will be released for extinguishing and cooling.

Embodiment 2

[0053] A material for preventing combustion of a lithium battery and its package includes a multi-layer composite film, the composite film includes two layers of polymer coating films and a layer of hydrogel located between the two layers of films, the polymer coating The film includes a polymer film, the inner side of the polymer film is coated with a layer of water-blocking coating, and the outer layer of the polymer film is sequentially coated with an adhesive coating and a flame retardant coating; The two sides are respectively coated with a water-blocking coating, an adhesive coating and a flame-retardant coating to form a polymer coating film. The water-blocking coating, the adhesive coating and the flame-retardant coating are collectively referred to as coating. Floor.

[0054] The polymer film is one of polyimide film, polyvinyl fluoride film, polyether ether ketone film, polyester film, polyethylene film, polypropylene film, and polyvinylidene chloride. The thickness...

Embodiment 3

[0063] A material for preventing combustion of a lithium battery and its package includes a multi-layer composite film, the composite film includes two layers of polymer coating films and a layer of hydrogel located between the two layers of films, the polymer coating The film includes a polymer film, the inner side of the polymer film is coated with a layer of water-blocking coating, and the outer layer of the polymer film is sequentially coated with an adhesive coating and a flame retardant coating; The two sides are respectively coated with a water-blocking coating, an adhesive coating and a flame-retardant coating to form a polymer coating film. The water-blocking coating, the adhesive coating and the flame-retardant coating are collectively referred to as coating. Floor.

[0064] The polymer film is one of polyimide film, polyvinyl fluoride film, polyether ether ketone film, polyester film, polyethylene film, polypropylene film, and polyvinylidene chloride. The thickness...

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Abstract

The invention belongs to the technical field of combustion treatment of lithium batteries and their packages, and relates to a material for preventing combustion of lithium batteries and their packages and a preparation method. The structure is a composite membrane consisting of two layers of polymer membranes sandwiching a layer of hydrogel. The composite film can be applied to the pouch structure wrapping lithium batteries or lithium battery packages, or the composite film can be directly covered on the surface of one or more lithium battery packages. The composite film has the functions of flame retardancy, fire extinguishing, cooling, slow heat transfer, and isolation of the contact between the burning material and the air, thus effectively preventing the burning of lithium batteries and their packaging.

Description

technical field [0001] The invention relates to the field of materials for preventing the combustion of lithium batteries and their packages, in particular to a material for preventing the combustion of lithium batteries and their packages, and a preparation method, which has the characteristics of flame retardancy, cooling, fire extinguishing and slow heat transfer. Background technique [0002] Lithium battery is currently the most advanced and fastest-growing civil chemical energy source, and it has become the preferred supporting power source for high-end products such as mobile phones, notebook computers, and digital equipment. However, lithium batteries are also dangerous during use and transportation, which can be fatal and even lead to a disaster. [0003] According to the U.S. Federal Aviation Administration (FAA), between 1991 and 2014, there have been 144 battery-related "smoke, fire, extreme heat or explosion" related accidents. There have also been many lithium...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02B32B27/06H01M50/116H01M50/126
CPCB32B27/06H01M50/124Y02E60/10
Inventor 梅拥军李洪武李宏谱周洪谢麟刘雪奇
Owner THE SECOND RES INST OF CIVIL AVIATION ADMINISTRATION OF CHINA