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Lithium battery with phase changing material

A technology of phase change materials and lithium batteries, which is applied in the direction of lithium batteries, secondary batteries, heat exchange materials, etc., can solve the problems of high battery temperature, achieve the effects of prolonging service life, uniformly dispersing and cooling, and preventing aging

Inactive Publication Date: 2018-01-19
SONGYUAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the deficiencies of the above-mentioned prior art, and provides a lithium battery with a phase change material, which solves the problem in the prior art that the temperature of the battery is too high during charging and discharging

Method used

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  • Lithium battery with phase changing material

Examples

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Effect test

Embodiment 1

[0012] A lithium battery with a phase change material, including a lithium battery body 1, the outer surface of the lithium battery is covered with a separator 2 on one side, and the inside of the separator is filled with a phase change material; the phase change material is composed of the following materials in parts by weight: Prepared, deionized water: polyvinyl alcohol: polyethylene glycol: dimethyl sulfoxide: acrylic acid: N,N-methylenebisacrylamide: sodium bisulfite: sodium persulfate: SAP resin: oxalic acid: Maleic anhydride=472:100:112:110:105:20:20:20:40:52:48.

[0013] The preparation method of the phase change material is as follows: take the raw materials according to the above weight ratio, soak polyvinyl alcohol in deionized water and dimethyl sulfoxide solution for 1 hour in a water bath at 40°C, and stir at 60 times / min. melting to prepare an aqueous solution of polyvinyl alcohol. When the water bath reaches 90°C, fully stir for 0.5h. Filter with a 400-mesh ...

Embodiment 2

[0018] The phase change material is prepared from the following materials in parts by weight: deionized water: polyvinyl alcohol: polyethylene glycol: dimethyl sulfoxide: acrylic acid: N, N-methylenebisacrylamide : sodium bisulfite: sodium persulfate: SAP resin: oxalic acid: maleic anhydride=400:80:90:100:80:10:10:10:20:40:40; other structures and preparation methods are the same as in Example 1 . The enthalpy value of the phase change material in this embodiment is 260 J / g.

Embodiment 3

[0020] The phase change material is prepared from the following materials in parts by weight: deionized water: polyvinyl alcohol: polyethylene glycol: dimethyl sulfoxide: acrylic acid: N, N-methylenebisacrylamide : sodium bisulfite: sodium persulfate: SAP resin: oxalic acid: maleic anhydride=500:120:130:140:125:30:30:30:60:70:70; other structures and preparation methods are the same as in Example 1 . The enthalpy value of the phase change material in this embodiment is 258 J / g.

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Abstract

The invention relates to a lithium battery with a phase changing material. The lithium battery comprises a lithium battery body, wherein an isolation sheet is coated at one side of an outer surface ofthe lithium battery, and a phase changing material is filled in the isolation sheet. The isolation sheet filled with the phase changing material is coated on the outer surface of the lithium battery,effects of uniform dispersion and temperature reduction are achieved, the battery is prevented from aging, and the service lifetime of the battery is prolonged.

Description

technical field [0001] The invention relates to a battery, in particular to a lithium battery with a phase change material. Background technique [0002] With the widespread use of digital products, lithium-ion batteries have been widely used in such products with excellent performance, and are gradually developing into other product application fields. However, when the battery is charged and discharged, a large amount of heat will be generated, which will cause the temperature of the battery to rise and increase the aging of the battery. Contents of the invention [0003] The present invention aims at the disadvantages of the above-mentioned prior art, and provides a lithium battery with a phase change material, which solves the problem in the prior art that the temperature of the battery is too high during charging and discharging. [0004] Technical scheme of the present invention is as follows: [0005] A lithium battery with a phase change material, including a lit...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/052H01M10/613H01M10/617C09K5/06C08F291/08C08F222/06C08F220/06C08F222/38H01M50/116
CPCY02E60/10
Inventor 孟祥辰陈洪涛赵云良徐立新车宝林雷司宇于温方谭聪张淼
Owner SONGYUAN POWER SUPPLY COMPANY OF STATE GRID JILINSHENG ELECTRIC POWER SUPPLY