Composite phase change material, application method and battery of the composite phase change material

A composite phase-change material and phase-change material technology, applied in the direction of secondary batteries, heat exchange materials, chemical instruments and methods, etc., can solve problems affecting battery performance and safety, overall battery temperature rise, and mobile terminal performance degradation, etc. , to achieve the effect of reducing preparation cost, shortening speed and improving heat dissipation efficiency

Active Publication Date: 2022-04-08
DONGGUAN NVT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the improvement of mobile terminal functions and power, the charging and discharging power of the battery is also getting higher and higher, especially after the fast charging technology is widely used in mobile terminals, the heat generated by the battery, especially the control system components in the battery is getting higher and higher. High, leading to a sharp rise in the overall temperature of the battery, this will not only affect the performance and safety of the battery itself, but will even conduct heat to the mobile terminal, resulting in adverse effects such as reduced overall performance of the mobile terminal, overheating of the shell, and hot hands.

Method used

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  • Composite phase change material, application method and battery of the composite phase change material
  • Composite phase change material, application method and battery of the composite phase change material
  • Composite phase change material, application method and battery of the composite phase change material

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preparation example Construction

[0056] The present application also provides a method for preparing the above-mentioned composite phase change material, which comprises the following steps:

[0057] The phase change material and the adhesive are uniformly mixed under the condition of 80° C. to 120° C. according to a certain weight portion.

[0058] Specifically, in this embodiment, the phase change material and the binder may be mixed in certain parts by weight at a temperature of 80° C. to 120° C. for 30 minutes to 50 minutes through an open mill until they are evenly mixed.

[0059] The homogeneously mixed phase change material and the binder are extruded from an extruder at a temperature of 80° C. to 120° C. to form the composite phase change material. Wherein, the extruder is a twin-screw extruder.

[0060] In some embodiments, the composite phase change material may be in the form of a sheet. At this time, the preparation method of the composite phase change material further includes the step of: comp...

Embodiment 1

[0077] A composite phase change material comprises 70 parts of phase change material and 30 parts of adhesive in parts by weight.

[0078] In Example 1, the above composite phase change material can be prepared by the following method.

[0079] Preparation of phase change materials: heat-melt unmodified paraffin, then add long-chain alkylamine, silane coupling agent and surfactant to the unmodified paraffin after heat-melting, mix them in water bath or oil bath Keep warm for 2 hours. Wherein, the weight of the long-chain alkylamine that adds is 8% of the weight of unmodified paraffin wax, the weight of the silane coupling agent that adds is 0.5% of the weight of unmodified paraffin wax, the weight of the surfactant that adds 0.3% by weight of unmodified paraffin. The long-chain alkylamine is n-dodecylamine, the silane coupling agent is vinyltrimethoxysilane, and the surfactant is palmitic acid. Then successively add the polyphenol oxygen resin and Clariant PEG-6000 (molecul...

Embodiment 2

[0083] A composite phase-change material comprises 75 parts of phase-change material and 25 parts of adhesive in parts by weight.

[0084]In Example 2, the above composite phase change material can be prepared by the following method.

[0085] Preparation of phase change materials: heat-melt unmodified paraffin, then add long-chain alkylamine, silane coupling agent and surfactant to the unmodified paraffin after heat-melting, mix them in water bath or oil bath Keep warm for 2 hours. Wherein, the weight of the long-chain alkylamine that adds is 27% of the weight of unmodified paraffin wax, the weight of the silane coupling agent that adds is 0.5% of the weight of unmodified paraffin wax, the weight of the surfactant that adds 0.3% by weight of unmodified paraffin. The long-chain alkylamine is n-hexadecylamine, the silane coupling agent is propyltrimethoxysilane, and the surfactant is hexamethylene glycol monohexadecyl ether. Then add the polyphenol oxygen resin and Clariant ...

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Abstract

The present application provides a composite phase change material, which comprises 65-80 parts of a phase change material and 20-35 parts of a binder in parts by weight. The adhesive comprises an acrylate monomer with a molecular weight of 50-300, an acrylate polymer with a molecular weight of 500-2000 and an initiator. The application also provides an application method of the composite phase change material and a battery using the composite phase change material. The initiator in the composite phase change material can generate free radicals under ultraviolet light irradiation conditions to initiate polymerization between the components in the composite phase change material, so that the composite phase change material is cured, so as to greatly shorten the composite phase change The speed at which the material solidifies into shape. In addition, after curing, the composite phase change material will not flow when heated, and has good reliability.

Description

technical field [0001] The present application relates to the field of heat dissipation, and in particular to a composite phase change material, an application method of the composite phase change material and a battery using the composite phase change material. Background technique [0002] With the improvement of mobile terminal functions and power, the charging and discharging power of the battery is also getting higher and higher, especially after the fast charging technology is widely used in mobile terminals, the heat generated by the battery, especially the control system components in the battery is getting higher and higher. This will not only affect the performance and safety of the battery itself, but will even conduct heat to the mobile terminal, resulting in a decrease in the overall performance of the mobile terminal, overheating of the casing and other adverse effects. Therefore, how to effectively dissipate heat from the battery has become an urgent problem t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/06H01M10/613H01M10/623H01M10/647H01M10/659
CPCC09K5/063H01M10/613H01M10/623H01M10/647H01M10/659Y02E60/10C08F290/147C08L91/06C08L2203/206C08L2201/08C08L71/02C08L61/00C08K5/14C08K5/5415C08L51/08C08F220/1808C08F220/20C08F220/1811C08F222/102C08F220/281C08F222/1006C08F20/06C08K5/053C08K5/06C08K5/357C08K5/5397C09K5/06H05K1/0209H05K2201/06
Inventor 吴昊王永珍刘晓熹殷炳龙
Owner DONGGUAN NVT TECH
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