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Composite phase change material, application method thereof, and battery

A composite phase change material and application method technology, applied in the field of batteries and composite phase change materials, can solve the problems of the overall temperature rise of the battery, affecting the performance and safety of the battery, and the overheating of the casing.

Active Publication Date: 2020-10-20
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 thereof, and battery
  • Composite phase change material, application method thereof, and battery
  • Composite phase change material, application method thereof, and battery

Examples

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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 invention provides a composite phase change material. The composite phase change material comprises, by weight, 65-80 parts of a phase change material and 20-35 parts of an adhesive. The adhesivecomprises an acrylate monomer with the molecular weight of 50-300, an acrylate polymer with the molecular weight of 500-2000 and an initiator. The invention also provides an application method of thecomposite phase change material, and a battery applying the composite phase change material. The initiator in the composite phase change material can generate free radicals under the condition of ultraviolet irradiation to initiate polymerization reaction among components in the composite phase change material, so that the composite phase change material is cured, and the curing and forming speedof the composite phase change material is greatly reduced. In addition, the cured composite phase change material does not flow after being heated, and the reliability is good.

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 Applications(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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