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Phase change heat storage buffer material and preparation method and application thereof

A buffer material, phase change heat storage technology, applied in the direction of heat exchange materials, chemical instruments and methods, electrochemical generators, etc., can solve problems such as thermal runaway, reduced battery charge and discharge capacity, easy heat diffusion, etc., to achieve good results Effects of heat storage and cushioning performance, improvement of stability, and enhancement of heat transfer performance

Inactive Publication Date: 2018-05-29
上海叹止新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current commonly used power battery system is composed of many batteries. However, due to the technical limitations of the current battery, the use of power batteries is affected by temperature factors that cause performance degradation. Reduced; high temperature accelerates electrolyte volatilization and aging of pole pieces, which reduces the service life of the battery; under overcharging, internal short circuit and other failure states, the temperature of the battery will rise and thermal runaway will occur
Since many batteries are arranged in close proximity, the heat is easily diffused, causing thermal runaway of other batteries, and such a chain reaction will greatly increase the failure risk of the battery system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1 phase change microcapsule

[0028] Take 10g of liquid paraffin and heat 10g of solid paraffin to a molten state, and add it to 100g of water to disperse and mix, then add 30g of octylphenol polyoxyethylene ether emulsifier to emulsify, and stir at high speed (2000r / min) to disperse the paraffin into fine particles. Emulsion droplets; then adjust the temperature of the system to 70-80° C., and add 1.5 g of toluene-2,4-diisocyanate and 10 g of ethylenediamine for interfacial polymerization coating to obtain the phase change microcapsules.

[0029] After testing, the particle size of the obtained microcapsules is 3-4 microns, and the energy storage value of the obtained microcapsules is 180-200 J / g. Embodiment 2 phase-change microcapsules

Embodiment 2

[0029] After testing, the particle size of the obtained microcapsules is 3-4 microns, and the energy storage value of the obtained microcapsules is 180-200 J / g. Embodiment 2 phase-change microcapsules

[0030] Take 5g of liquid paraffin and heat 15g of solid paraffin to a molten state, and add it to 100g of water for dispersion and mixing, and add 1.5g of octylphenol polyoxyethylene ether emulsifier for emulsification, and stir at high speed to disperse the paraffin into small emulsion droplets; then The temperature of the system was adjusted to 70-80° C., and 1.5 g of toluene-2,4-diisocyanate and 10 g of ethylenediamine were added for interfacial polymerization coating to obtain the phase-change microcapsules.

[0031] After testing, the particle size of the obtained microcapsules is 3-4 microns, and the energy storage value of the obtained microcapsules is 180-200 J / g. Embodiment 3 phase-change microcapsules

Embodiment 3

[0031] After testing, the particle size of the obtained microcapsules is 3-4 microns, and the energy storage value of the obtained microcapsules is 180-200 J / g. Embodiment 3 phase-change microcapsules

[0032] Take 10g of liquid paraffin and heat 10g of solid paraffin to a molten state, and add it to 100g of water for dispersion and mixing, and add 5g of octylphenol polyoxyethylene ether emulsifier for emulsification, and stir at high speed to disperse the paraffin into fine emulsion droplets; then adjust The temperature of the system is brought to 70-80° C., and 1 g of toluene-2,4-diisocyanate and 9 g of ethylenediamine are added for interfacial polymerization coating to obtain the phase change microcapsules.

[0033] After testing, the particle size of the obtained microcapsules is 3-4 microns, and the energy storage value of the obtained microcapsules is 180-200 J / g. Embodiment 4 phase-change microcapsules

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Abstract

The invention belongs to the technical field of phase change energy storage materials and particularly relates to a phase change heat storage buffer material and a preparation method and application thereof. A base resin is filled with a phase change energy storage microcapsule material as a filler so that the phase change heat storage buffer material is obtained and has good heat storage and buffering performances. Through the properties of the phase change material, the phase change heat storage buffer material stores the heat produced by the high-speed operation of the electronic componentsand uses the heat so that the phase change heat storage buffer material is suitable for fields of microelectronic components and electronic devices.

Description

technical field [0001] The invention belongs to the technical field of phase change energy storage materials, specifically relates to a phase change heat storage buffer material, and further discloses its preparation method and application. Background technique [0002] In recent years, green energy has been vigorously advocated around the world. The development of new energy vehicles has been strongly supported by governments of various countries, and the development of power batteries is also extremely hot. Power batteries refer to batteries that provide power for transportation vehicles, generally relative to small batteries that provide energy for portable electronic devices. According to different battery reaction principles, it can be divided into lead-acid power battery, nickel-metal hydride power battery, lithium-ion power battery and so on. [0003] The power battery system has high energy (EV), high power (HEV), high energy density, high rate partial charge state ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K5/06H01M10/625H01M10/659
CPCC09K5/063H01M10/625H01M10/659Y02E60/10
Inventor 张长星张人华宋宁
Owner 上海叹止新材料科技有限公司
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