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Lithium battery soft packaging membrane

A technology for flexible packaging films and lithium batteries, which is applied to battery pack components, circuits, electrical components, etc. It can solve problems such as pinholes and cracks in the anti-corrosion treatment layer, which affect the application of packaging films, and achieve good water and oxygen resistance. Effects of tensile and impact resistance, enhanced impact resistance and thermal shrinkage

Inactive Publication Date: 2018-12-21
太仓斯迪克新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the organic polymer layer of the adhesive resin layer and the heat-sealing layer, the anti-corrosion treatment layer on the surface of the aluminum foil is relatively brittle, and the anti-corrosion treatment layer will produce defects such as pinholes and cracks during the drawing process, which affects the application of packaging films

Method used

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  • Lithium battery soft packaging membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0039] A lithium battery flexible packaging film, such as figure 1 As shown, it includes a nylon layer 1, an aluminum foil layer 2, and a heat-sealing layer 3 in sequence, wherein an anti-corrosion layer 4 is arranged between the aluminum foil layer 2 and the heat-sealing layer 3; The composite layer 42 on the main membrane body 41 of the anticorrosion layer, wherein the main membrane body 41 is a gel with good corrosion resistance, the composite layer 42 is a non-woven fabric 421 and elastic protrusions 422 arranged on the non-woven fabric 421, The elastic protrusion 422 is disposed toward the main membrane body 41 of the anticorrosion layer.

[0040] The elastic protrusion 422 is made of foamed plastic, and then bonded to the surface of the non-woven fabric layer 421 by heat and pressure.

[0041] The main components of the anti-corrosion layer main film body 41 are organic silane, silica gel, silicone grease, calcium carbonate powder or calcium chloride powder, solvent and...

Embodiment 6

[0053] Step 1: Pour silicone grease, organosilane, silicone grease, and solvent into the reaction vessel and stir at high speed until dissolved;

[0054] Step 2: Add vanadic acid-vanadate solution therein, continue stirring at high speed for 12 hours, and raise the temperature to 65°C;

[0055] Step 3: adding magnesium sulfate hydrate or magnesium oxide thereto, filtering out precipitates and insolubles;

[0056] Step 4: Add calcium carbonate powder or calcium chloride powder, anti-corrosion agent, and the mixture in step 3 to the emulsifier and mix;

[0057] Step 5: Apply the mixture prepared in Step 3 on the surface of the non-woven fabric layer, and raise the ambient temperature to 82°C.

Embodiment 7

[0059] Step 1: Pour silicone grease, organosilane, silicone grease, and solvent into the reaction vessel and stir at high speed until dissolved;

[0060] Step 2: add vanadic acid-vanadate solution therein, continue stirring at high speed for 8 hours, and raise the temperature to 56°C;

[0061] Step 3: adding magnesium sulfate hydrate or magnesium oxide thereto, filtering out precipitates and insolubles;

[0062] Step 4: Add calcium carbonate powder or calcium chloride powder, anti-corrosion agent, and the mixture in step 3 to the emulsifier and mix;

[0063] Step 5: Apply the mixture prepared in Step 3 on the surface of the non-woven fabric layer, and raise the ambient temperature to 78°C.

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Abstract

The invention relates to a lithium battery soft packaging membrane which comprises a nylon layer, an aluminum foil layer and a heat sealing layer; the surface of the aluminum foil layer is provided with an anticorrosion layer; the anticorrosion layer comprises an anticorrosion layer main membrane body and a composite layer compounded on the anticorrosion layer main membrane body; the anticorrosionlayer main membrane body is gel with good anticorrosion performance; the composite layer comprises a non-woven fabric layer and elastic bugles arranged on the non-woven fabric layer; and the elasticbugles are arranged facing the anticorrosion layer main membrane body. In the technical scheme of the invention, by improving the anticorrosion layer, the anticorrosion layer has good tensile resistant ability and impact resistant ability; the anticorrosion layer main membrane body is the gel, and the composite layer is a non-woven fabric; the surface of the non-woven fabric is provided with the multiple elastic bugles, one surface, provided with the elastic bugles, of the non-woven fabric is arranged facing the anticorrosion layer main membrane body, each elastic bugle is abutted to the anticorrosion layer main membrane body, and an elastic square block is formed on the non-woven fabric among the elastic bugles when the external impact force is applied to the non-woven fabric, so that theimpact resistance of the whole structure is improved.

Description

technical field [0001] The invention relates to a lithium battery film, in particular to a lithium battery soft packaging film. Background technique [0002] Lithium batteries are lithium-ion secondary batteries. Due to their light weight, large capacity, long cycle life, and no memory effect, they are widely used in mobile phones, laptops, cameras, power banks, electric vehicles, robots, satellites, etc. It provides energy and is also used as a battery for energy storage, such as power bank, solar power station energy storage, etc. At present, lithium batteries are in a stage of continuous improvement in performance, continuous reduction in cost, rapid expansion of application fields, and a sharp increase in market share. [0003] Lithium battery flexible packaging film, as the outer shell of the battery core, needs to meet the following basic requirements: excellent heat sealability, inner material does not react with the electrolyte and the overall resistance to the elec...

Claims

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Application Information

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IPC IPC(8): B32B15/20B32B15/14B32B27/02B32B27/06B32B27/34B32B33/00H01M2/02C08L101/00C08L5/04C08K5/098H01M50/124
CPCC08L101/00B32B5/02B32B5/022B32B15/14B32B15/20B32B27/06B32B2255/02B32B2262/0261B32B2255/20B32B2255/24B32B2307/306B32B2307/7145B32B2307/558B32B2307/54B32B2307/7265B32B2307/7244H01M50/124C08L5/04C08K5/098Y02E60/10
Inventor 金闯
Owner 太仓斯迪克新材料科技有限公司
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