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Soft-package aluminum-plastic film for lithium ion battery and preparation method of soft-package aluminum-plastic film

A lithium-ion battery and aluminum-plastic film technology, which is applied to the soft-packed aluminum-plastic film of lithium-ion batteries and its preparation field, can solve the problems of the inner layer of the aluminum foil film, such as insufficient corrosion resistance and abrasion resistance, and achieve corrosion resistance Strong, improved service life, stable chemical properties

Inactive Publication Date: 2017-05-31
ZHENGZHOU SINO CRYSTAL DIAMOND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a soft-wrapped aluminum-plastic film for lithium-ion batteries and its preparation method, so as to overcome the defects that the corrosion resistance of the inner layer of the current aluminum foil film and the abrasion resistance of the outer layer are not ideal.

Method used

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  • Soft-package aluminum-plastic film for lithium ion battery and preparation method of soft-package aluminum-plastic film

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Embodiment 1

[0052] Soft aluminum-plastic film for lithium-ion batteries, its structure is as follows figure 1 As shown, from outside to inside are PTFE layer wear-resistant layer 1, co-extruded layer 2, bonding layer 3, diamondene-nickel-phosphorus coating 4, aluminum foil layer 5, diamondene-nickel-phosphorus coating 4 , a thermosetting plastic layer 6, an adhesive layer 7, and a heat-sealing layer 8.

[0053] The thickness of the PTFE wear-resistant layer is 10 microns, the co-extrusion layer is 4 microns, the bonding layer is 10 microns, the diamondene-nickel-phosphorus composite coating is 2 microns, the aluminum foil layer is 90 microns, and the diamondene-nickel-phosphorus composite coating is 2 microns , Thermosetting plastic 5 microns, adhesive layer 10 microns, heat seal layer 15 microns.

[0054] Among them, hot-melt glue is used for the bonding layer, and the hot-melt glue is adjusted to a solid content of 45%; the ratio of polyethylene and nylon in the co-extruded layer is 1:...

Embodiment 2

[0075] Soft aluminum-plastic film for lithium-ion batteries, its structure is as follows figure 1 As shown, from outside to inside are PTFE layer wear-resistant layer 1, co-extruded layer 2, bonding layer 3, diamondene-nickel-phosphorus coating 4, aluminum foil layer 5, diamondene-nickel-phosphorus coating 4 , a thermosetting plastic layer 6, an adhesive layer 7, and a heat-sealing layer 8.

[0076] The thickness of the PTFE wear-resistant layer is 8 microns, the co-extrusion layer is 5 microns, the bonding layer is 15 microns, the diamondene-nickel-phosphorus composite coating is 2 microns, the aluminum foil layer is 90 microns, and the graphene-nickel-phosphorus composite coating is 2 microns , Thermosetting plastic 7 microns, adhesive layer 15 microns, heat seal layer 12 microns.

[0077] Among them, hot-melt glue is used for the bonding layer, and the hot-melt glue is adjusted to a solid content of 45%; the ratio of polyethylene and nylon in the co-extrusion layer is 1:0....

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Abstract

The invention belongs to the field of lithium ion batteries and particularly relates to a soft-package aluminum-plastic film for a lithium ion battery and a preparation method of the soft-package aluminum-plastic film. The aluminum-plastic film comprises an aluminum foil layer located at an intermediate layer, wherein diamondene-nickle-phosphorus plating layers are respectively arranged inside and outside the aluminum foil layer. The invention provides the novel soft-package aluminum-plastic film for the lithium ion battery and the preparation method of the novel soft-package aluminum-plastic film. The aluminum-plastic compound film has good cold pressing forming property; and a soft-package lithium battery prepared from the soft-package aluminum-plastic film has the advantages of relatively strong water-resisting property, oxygen-resisting property, puncture resistance and electrolyte erosion resistance, good insulativity and excellent corrosion resistance and friction resistance, and two adjacent layers are unlikely to be separated and peeled.

Description

technical field [0001] The invention belongs to the field of lithium-ion battery materials, and in particular relates to a soft-wrapped aluminum-plastic film for lithium-ion batteries and a preparation method thereof. Background technique [0002] As a new generation of green new energy batteries, lithium-ion batteries have the advantages of light weight, high capacity density, high voltage, and no memory effect, and are widely used in portable electronic devices such as notebook computers, mobile phones, and digital cameras. Development of new energy vehicles. It is precisely because lithium batteries are widely used in national life that higher and higher requirements are put forward for the safety performance of lithium batteries. The traditional lithium battery casing is made of iron, aluminum, copper and other metal materials through die stamping to make the electrolyte container, but due to the rigidity and brittleness of the metal material, there are certain safety h...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M10/0525
CPCH01M10/0525H01M50/124Y02E60/10
Inventor 郭留希杨晋中李盟武艳强尹维召文炯王聪
Owner ZHENGZHOU SINO CRYSTAL DIAMOND
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