Allochroic aluminum-plastic packaging film and preparation method thereof

A technology of aluminum-plastic packaging and color-changing layers, applied in chemical instruments and methods, electrical components, electrochemical generators, etc., can solve problems such as safety accidents, battery temperature monitoring, etc., achieve strong practicability, simple production process, and facilitate promotion Effect

Inactive Publication Date: 2016-12-07
武汉美格科技股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There has been a lack of monitoring of battery temperature for a long time, so it is necessary to effectively monitor the temperature of the battery to prevent the battery from working in a high temperature environment for a long time, so as to avoid safety accidents

Method used

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  • Allochroic aluminum-plastic packaging film and preparation method thereof

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Embodiment

[0027] Example: such as figure 1 As shown, the color-changing aluminum-plastic packaging film of this embodiment is composed of an inner film layer 11, and a barrier layer 12, a color-changing layer 13, and an outer film layer 14 arranged on the inner film layer 11 sequentially from bottom to top. The above-mentioned color-changing layer 13 can be Color changes with temperature changes.

[0028] The discoloration range of the above-mentioned discoloration layer 13 is set according to the working environment temperature of the lithium battery. The preferred setting range is from 0°C to 80°C; Normal color will appear when the temperature returns to the set range.

[0029] The color-changing layer 13 is made of an inorganic temperature-sensitive color-changing material, an organic temperature-sensitive color-changing material or an inorganic-organic temperature-sensitive color-changing composite material.

[0030] The above-mentioned inorganic temperature-sensitive color-changi...

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Abstract

The invention relates to an allochroic aluminum-plastic packaging film and a preparation method thereof. The allochroic aluminum-plastic packaging film is composed of an inner film layer, and a barrier layer, an allochroic layer and an outer film layer that are arranged on the inner film layer sequentially from bottom to top, and the allochroic layer may vary in color with temperature changes. The preparation method includes the steps of 1, preparing the outer film layer; 2, depositing inorganic thermosensitive particles in a polymer base, and spraying to form a film on the inner side of the outer film layer by the aid of spraying technique; 3, attaching the barrier layer to the inner surface of the allochroic layer of step 1 by dry combining process, and drying; 4, applying modified polypropylene material that is melted to the inner surface of the barrier layer to form the inner film layer. The allochroic aluminum-plastic packaging film and the preparation method thereof have the advantages that the structure is simple, the inner temperature of a battery varies in use so that the allochroic layer varies in color, presenting different colors, it is convenient to know the changes in the inner temperature of the battery, the temperature of the battery is under monitoring, and the preparation method is simple.

Description

technical field [0001] The invention relates to a flexible packaging film for the outer layer of a lithium battery, in particular to a color-changing aluminum-plastic packaging film and a preparation method thereof. Background technique [0002] With the development of new energy technology, secondary lithium batteries have become more and more popular energy storage batteries, and their application range is becoming wider and wider. From the traditional 3C consumption field to the emerging power battery and energy storage battery fields, secondary lithium batteries The status of batteries is becoming more and more important. In order to realize the lightness, miniaturization and safety of lithium batteries, more and more lithium batteries use soft packaging materials. [0003] The main structure of the secondary lithium battery is composed of positive electrode material, negative electrode material, electrolyte, tabs and outer packaging materials. However, lithium batteri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M10/0525B32B15/09B32B15/20B32B27/36B32B27/32B32B27/18B32B33/00
CPCB32B15/09B32B15/20B32B27/18B32B27/32B32B27/36B32B33/00H01M10/0525H01M50/10Y02E60/10
Inventor 桂裕鹏胡德邱旭东胡泽利
Owner 武汉美格科技股份有限公司
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