Flame retardant material of lithium battery module and preparation method of flame retardant material

A flame retardant material, lithium battery technology, applied in fire retardant coatings, epoxy resin coatings, coatings, etc., can solve problems such as explosion, battery fire, loss of thermal insulation, etc., to improve safety performance and avoid fire effects.

Inactive Publication Date: 2019-08-30
SUZHOU YOULION BATTERY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the safety performance of lithium-ion batteries has great constraints on the development of electric vehicles
Among them, the deflagration caused by the internal short circuit of the lithium-ion battery has become the most urgent problem in the field of power batteries due to the diversity of causes, the randomness and singularity of the first deflagration battery, the inability to completely eliminate the deflagration incentives, and the inability to detect before shipment. question
[0003] At present, for the square aluminum shell battery module, the heat insulation cotton currently used cannot prevent the fire from spreading after the lithium battery catches fire, and can only play a heat insulation effect in a short time
When the heat insulation cotton is in a high temperature state for a long time, it will lose its heat insulation effect, which will cause the battery to catch fire and explode in series

Method used

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  • Flame retardant material of lithium battery module and preparation method of flame retardant material
  • Flame retardant material of lithium battery module and preparation method of flame retardant material
  • Flame retardant material of lithium battery module and preparation method of flame retardant material

Examples

Experimental program
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Effect test

specific Embodiment approach

[0033] see figure 2 , the prepared battery module was used to test the thermal runaway of the simulated battery on the top of the acupuncture device designed by Yuliang Company. Specific implementation method: drop a 10kg discus from a height of 1m, hit a copper-plated steel needle with a length of 90mm and φ5mm perpendicular to the explosion-proof valve of the battery cell, the steel needle stays in the battery cell, and record the fire situation. The flame retardant material before improvement has obvious open flame ( figure 2 The middle black frame is the flame); the improved flame retardant material has no open flame when burning, only smoke, thus achieving the flame retardant effect.

[0034] In the flame retardant material of a lithium battery module provided in the above embodiment and its preparation method, the flame retardant materials such as triazine carbon former, diethyl aluminum hypophosphite, triphenyl phosphine oxide and epoxy resin glue , organic silica g...

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PUM

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Abstract

The invention provides a flame retardant material of a lithium battery module. The flame retardant material is disposed on the top surface and/or the side surface of the lithium battery module, and comprises the following components: in percent by weight, 0-50% of a triazine carbon-forming agent, 0-30% of aluminum diethylphosphinate, 0-30% of triphenylphosphine oxide, 0-70% of an epoxy resin adhesive and 0-70% of organic silica gel. The invention also provides a preparation method of the flame retardant material for the lithium battery module. Through the flame retardant material, combustion can be slowed down and stopped, ignition of the lithium battery module is avoided, and the safety performance of lithium ion batteries is improved greatly.

Description

technical field [0001] The invention relates to the field of lithium ion batteries, in particular to a flame retardant material of a lithium battery module and a preparation method thereof. Background technique [0002] With the gradual development of new energy vehicles, lithium-ion batteries have gradually replaced gasoline as the power support for vehicles. However, the safety performance of lithium-ion batteries has greatly restricted the development of electric vehicles. Among them, the deflagration caused by the internal short circuit of the lithium-ion battery has become the most urgent problem in the field of power batteries due to the diversity of causes, the randomness and singularity of the first deflagration battery, the inability to completely eliminate the deflagration incentives, and the inability to detect before shipment. question. [0003] At present, for the square aluminum shell battery module, the heat insulation cotton currently used cannot prevent th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D183/04C09D5/18
CPCC09D5/18C09D163/00C09D183/04C08K5/3492C08K5/5313C08K5/5397
Inventor 龙赛夫毛焕宇刘贯东
Owner SUZHOU YOULION BATTERY INC
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