Preparation method of high-stability thermally-induced flexible phase change material and cushioning battery module

A high-stability, phase-change material technology, used in heat-exchange materials, battery pack components, secondary batteries, etc., can solve the problems of poor uniformity, easy leakage, and poor thermal conductivity of phase-change materials. Effects of improved uniformity, improved thermal conductivity, lightweight and compactness

Pending Publication Date: 2021-07-20
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of this, this application provides a preparation method of a high-stability thermally flexible phase change material and a cushioning battery module, which are used to solve the technical problems of poor uniformity, poor thermal conductivity, and easy leakage of the phase change material

Method used

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  • Preparation method of high-stability thermally-induced flexible phase change material and cushioning battery module
  • Preparation method of high-stability thermally-induced flexible phase change material and cushioning battery module
  • Preparation method of high-stability thermally-induced flexible phase change material and cushioning battery module

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Experimental program
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Embodiment 1

[0037] (1) Melt the paraffin at 150°C, add styrene-butadiene-styrene block copolymer and stir and dissolve at 500rad / min to obtain a translucent colloidal solution;

[0038] (2) Add EPDM rubber (ethylene, propylene and non-conjugated diene terpolymer, molecular weight distribution: 2 to 5) into the translucent colloidal solution and stir and melt at 1000rad / min, wherein paraffin, The mass ratio of styrene-butadiene-styrene block copolymer and EPDM rubber is 8:1:0.5 to obtain a viscous colloidal solution;

[0039] (3) adding expanded graphite in the viscous colloidal solution and stirring and mixing at 1000rad / min, wherein the addition of the thermal conductivity enhancer is respectively 1wt%, 3wt% and 5wt% of the total mass, poured into the mold for curing, The products E-SPEG1, E-SPEG3 and E-SPEG5 were prepared respectively.

Embodiment 2

[0052] Please refer to Figure 3-4 , the embodiment of the present application provides a cushioning battery 5 module, including a box body 1 and a battery bracket; the battery bracket is placed in the box body 1, and is used to load the battery 5; the battery bracket is made of the product obtained in Example 1 .

[0053] In the embodiment of the present application, the phase change material has good flexibility, and it still has a high quality retention rate after long-term use at high temperature, which can realize the lightweight and compactness of the battery 5 module, and improve the thermal conductivity of the phase change material , more effectively adapt to the thermal management of the battery 5, and avoid the problem of being out of thermal contact with the battery 5 during leakage and vibration. It should be noted that the box body 1 is made of insulating material.

[0054] Further, the battery holder includes a loading cylinder 2 and a connecting member 4 conne...

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Abstract

The invention belongs to the technical field of phase change materials. The invention provides a preparation method of a high-stability thermally-induced flexible phase change material and a cushioning battery module. The high-stability thermally-induced flexible phase-change material is prepared by melting and mixing a phase-change base material, a styrene-butadiene-styrene block copolymer, ethylene propylene diene monomer and a heat-conducting enhancer under stirring. By adding the ethylene propylene diene monomer (ethylene, propylene and non-conjugated diene copolymer), the crosslinking of the styrene-butadiene-styrene block copolymer can be effectively increased, the adsorption of the styrene-butadiene-styrene block copolymer to the phase-change base material is increased, the phenomenon of phase separation of the styrene-butadiene-styrene block copolymer and the phase-change base material is effectively avoided, and the uniformity of the phase-change material is improved, so that the phase-change material still has high quality retention rate after being used for a long time at high temperature, the light weight and compactness of the battery module can be realized, the heat conductivity coefficient of the phase-change material is improved, and the problem that the phase-change material is separated from a battery during leakage and vibration is effectively avoided.

Description

technical field [0001] The application belongs to the technical field of phase change materials, and in particular relates to a preparation method of a highly stable thermally flexible phase change material and a cushioning battery module. Background technique [0002] In recent years, due to the energy shortage crisis, environmental pollution and greenhouse effect caused by the continuous consumption of fossil energy, the development and utilization of sustainable green energy has become an important focus of sustainable development. Electric vehicles using green and clean energy can effectively reduce the consumption of fossil energy and greenhouse gas emissions of traditional fuel vehicles. Among them, the power battery is the energy supply part of the electric vehicle, its performance and safety performance directly affect the performance and safety of the electric vehicle, and even the safety of the driver. In actual use, the power battery system often needs to experie...

Claims

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Application Information

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IPC IPC(8): C09K5/06H01M50/242H01M50/249H01M50/213H01M50/195H01M50/258H01M10/613H01M10/625H01M10/6561H01M10/6567H01M10/659H01M10/653H01M10/643
CPCC09K5/063H01M10/613H01M10/625H01M10/643H01M10/653H01M10/6561H01M10/6567H01M10/659Y02E60/10
Inventor 李新喜黄启秋张国庆
Owner GUANGDONG UNIV OF TECH
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