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

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...

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

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