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Aluminum-plastic film for lithium battery packaging and manufacturing process thereof

A manufacturing process, aluminum-plastic film technology, applied in the field of aluminum-plastic film for lithium battery packaging and its manufacturing process, can solve the problems of affecting the appearance, only focusing on the material drawing performance, reducing the battery barrier and dielectric coefficient, etc., to achieve The effect of enhancing slipperiness

Active Publication Date: 2017-03-08
MING CROWN ADVANCED MATERIAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For a long time, manufacturers of packaging aluminum-plastic films for lithium batteries have only paid attention to the deep-drawing performance of materials, and have not paid attention to the disadvantages of easy corrosion of the outer layer of aluminum-plastic films. Corrosion of the outer layer of the aluminum-plastic film reduces the overall barrier and dielectric coefficient of the battery, and also affects the appearance

Method used

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  • Aluminum-plastic film for lithium battery packaging and manufacturing process thereof

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Effect test

Embodiment

[0036] The manufacturing process of the aluminum-plastic film for lithium battery packaging of the present invention is as follows:

[0037] 1) Using aluminum foil, surface treatment is done on both sides of the aluminum foil first, the smooth side is treated with anti-corrosion treatment, and the matte side is treated with increasing surface tension;

[0038] 2) Mix according to the ratio of epoxy resin modified fluororesin coating B: curing agent B = 100:19, add 80% of the corresponding mass of butanone at the same time, stir and mix evenly;

[0039] 3) Coat the coating of system B on the matte surface of the aluminum foil, with a wet film thickness of 35 μm-50 μm;

[0040] 4) The temperature of the drying tunnel is set to a temperature gradient of 80-100-90°C, and the aluminum foil runs in the drying tunnel at a speed of 5M / min to ensure that the winding is intact;

[0041] 5) The semi-finished product is cured in a curing chamber at 80°C-100°C for 16-24 hours;

[0042] 6...

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Abstract

The invention relates to an aluminum plastic film for lithium battery packaging, comprising a CPP layer (1), an inner adhesive layer (2), an aluminum foil layer (3) and a transparent coating layer (4) ), the transparent coating (4) containing fluorine elements includes fluorine-modified high-temperature-resistant acrylic coatings, fluorine-modified high-temperature-resistant polyurethane coatings, FEVE coatings or PVDF coatings. The invention also provides a manufacturing process of the aluminum-plastic film for lithium battery packaging. When the aluminum-plastic film is packaged and injected with electrolyte, it will not be corroded when in contact with accidentally dripped electrolyte, and the slipperiness of the outer surface of the film is enhanced.

Description

technical field [0001] The invention belongs to the field of lithium battery packaging production, and in particular relates to an aluminum-plastic film for lithium battery packaging and a manufacturing process thereof. Background technique [0002] Aluminum-plastic film for lithium battery packaging is used for battery packaging, which overcomes the long-term safety hazard caused by hard material packaging batteries: battery explosion caused by inflation. For a long time, manufacturers of packaging aluminum-plastic films for lithium batteries have only paid attention to the deep-drawing performance of materials, and have not paid attention to the disadvantages of easy corrosion of the outer layer of aluminum-plastic films. Corrosion of the outer layer of the aluminum-plastic film reduces the overall barrier and dielectric coefficient of the battery, and also affects the appearance. Contents of the invention [0003] In order to overcome the above-mentioned defects, the p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02B32B15/085B32B15/04B32B15/095B32B15/082B32B15/08H01M50/129H01M50/145
CPCB32B15/04B32B15/08B32B15/082B32B15/085B32B15/095H01M50/116H01M50/124H01M50/1245Y02E60/10
Inventor 张曙光唐春峰张鹏纪孝熹吴松方艳徐海燕
Owner MING CROWN ADVANCED MATERIAL CO LTD
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