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Fireproof heat insulation felt and preparation method thereof, battery module and battery pack

A technology of battery modules and thermal insulation blankets, which is applied in the direction of battery components, secondary batteries, and isolation of batteries from their environment. Excellent flame retardancy, simple and efficient preparation method, and stable performance

Active Publication Date: 2021-05-28
KUSN ZHONGDI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after the device is shaken or used for many years, it may cause failure and cannot guarantee safety
[0004] In addition, in the prior art, most of the flame-retardant and heat-insulating materials or flame-retardant and heat-insulating devices used for new energy batteries are limited to the role of "heat insulation and flame retardancy", but cannot effectively control or extinguish the existing fire. You can only let the existing fire burn out and extinguish it by itself

Method used

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  • Fireproof heat insulation felt and preparation method thereof, battery module and battery pack
  • Fireproof heat insulation felt and preparation method thereof, battery module and battery pack

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Effect test

preparation example Construction

[0065] According to another aspect of the present invention, the present invention also relates to the preparation method of the above-mentioned fire-proof and heat-insulating blanket, said method comprising:

[0066] a) Add airgel, hollow glass microspheres and flame retardant components to the uniformly dispersed resin dispersion, and disperse uniformly to obtain a filler dispersion;

[0067] b) Submerging the substrate fully in the filler dispersion obtained in step a), drying and calendering to obtain a fire-proof and heat-insulating blanket.

[0068] The preparation method of the fire-proof and heat-insulating blanket provided by the invention is simple and efficient, and is easy to be popularized industrially.

[0069] Preferably, the resin dispersion liquid described in step a) comprises resin and solvent;

[0070] The solvent includes at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK and DMF, preferably ethanol;

[0071] Preferably, the resin dispersion ...

Embodiment approach

[0073] As a kind of embodiment of the present invention, the preparation method of fireproof insulation blanket comprises the following steps:

[0074] 1) Use a solvent to dissolve or dilute the resin, add a dispersant, and disperse evenly;

[0075] Preferably, the resin includes phenolic resin, polyurethane resin, acrylic resin, silicone rubber, etc.; the solvent includes at least one of ethanol, n-butanol, xylene, ethyl acetate, MEK and DMF;

[0076] Preferably, the resin uses thermoplastic phenolic resin powder (100 parts), and the solvent adopts ethanol (200-600 parts);

[0077] 2) Gradually add powder aerogel to the above solution to disperse evenly;

[0078] Preferably, the airgel has a particle size of 1 μm to 5 μm and a density of 0.03 g / cm 3 ~0.08g / cm 3 ;

[0079] Preferably, the airgel powder (10-100 parts) is selected from hydrophilic airgel powder;

[0080] 3) Add hollow glass microspheres to the above solution, and disperse evenly;

[0081] Preferably, the h...

Embodiment 1

[0091] A preparation method of a fireproof heat insulation felt, comprising the following steps:

[0092] 1) Dissolve thermoplastic phenolic resin powder (100 parts) with 400 parts of ethanol, add 10 parts of dispersant Disperbyk-2012, and disperse evenly;

[0093] 2) Gradually add 50 parts of silica airgel with a particle size of 1 μm to 5 μm in the above solution, and disperse evenly;

[0094] 3) Add 50 parts of hollow glass microspheres with a particle size of 5 μm to 20 μm in the above solution, and disperse evenly;

[0095] 4) Add 150 parts of decabromodiphenylethane and 40 parts of antimony trioxide) to the above solution, and disperse evenly;

[0096] 5) Soak the glass fiber needle felt in the solution of 4) and fully infiltrate it;

[0097] 6) 5) the resulting soaked felt material is dried by a coating machine;

[0098] 7) The dried felt material obtained in 6) is heated and calendered by a calender to obtain a flat fire-proof and heat-insulating felt coil with a sp...

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Abstract

The invention relates to a fireproof heat insulation felt and a preparation method thereof, a battery module and a battery pack. The fireproof heat insulation felt comprises a base material and a filler filled on the base material, wherein the base material is a glass fiber needled felt; the filler comprises resin, aerogel, hollow glass beads and a flame-retardant component; the filler accounts for 50%-90% of the weight of the fireproof heat insulation felt; and the density of the fireproof heat insulation felt is 0.1 g / cm<3> - 1.0 g / cm<3>. The fireproof heat insulation felt has excellent heat insulation performance, flame retardance and fireproof performance, heat insulation and flame retardance are achieved, and meanwhile, spreading of existing fire can be effectively delayed, even self-extinguishing of the fire can be achieved.

Description

technical field [0001] The invention relates to the field of new energy batteries, in particular to a fire-proof and heat-insulating blanket, a preparation method thereof, a battery module and a battery pack. Background technique [0002] New energy batteries, such as batteries in the field of automotive power, in order to make the battery work at a suitable temperature to prolong the service life of the battery and ensure the safety of use, flame-retardant and heat-insulating materials become extremely important. [0003] Some technologies seal the flame retardant inside the device, and release the flame retardant when the battery leaks to achieve the overall flame retardant effect of the battery pack. However, after the device is shaken or used for many years, it may cause failure, and safety cannot be guaranteed. [0004] In addition, in the prior art, most of the flame-retardant and heat-insulating materials or flame-retardant and heat-insulating devices used for new en...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/41D06M11/79D06M11/47D06M13/08D06M15/564D06M15/263H01M50/24H01M50/22H01M50/229H01M50/249H01M10/658
CPCD06M15/41D06M11/79D06M11/47D06M13/08D06M15/564D06M15/263H01M10/658D06M2200/30Y02E60/10
Inventor 金天辉许进刘伟德
Owner KUSN ZHONGDI MATERIALS TECH
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