Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method of steel plastic film of lithium battery

A lithium battery, steel-plastic technology, applied in the direction of battery pack parts, circuits, electrical components, etc., can solve the problem of not being able to fully realize thinning, lightweight and special-shaped, and not being able to obtain a wide range of applications and industrialization, material application Insufficient flexibility, etc., to achieve the effect of uniform and firm electroplating layer, improving overall quality and improving overall performance

Active Publication Date: 2017-06-23
赣州市中金高能电池材料股份有限公司
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, after a certain period of experiments, it was found that using stainless steel foil instead of aluminum-plastic film as the "steel-plastic film" of lithium battery packaging materials, although the strength and hardness are sufficient, but the flexibility of the material is inherently insufficient, and the deformation ability is poor, so that The molding and processing of materials still cannot fully achieve thinning, light weight, and special-shaped, and the application of materials is not flexible enough, so that this solution cannot be widely used and industrialized

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A preparation method for a lithium battery steel-plastic film, comprising the steps of:

[0034] a. Take SPCE low-carbon steel foil with a thickness of 18 μm, clean its surface with alcohol with a concentration of 92%, and then dry the cleaned SPCE low-carbon steel foil with a hot air blower, and place it for cooling after drying 4 minutes, then activate the surface;

[0035] b. Pre-plate a layer of ultra-thin nickel layer on both sides of the surface of SPCE low-carbon steel foil by pulse electroplating process as the iron-nickel bonding layer, and then use DC electroplating process to electroplate a layer thickness on the two outer surfaces of the iron-nickel bonding layer A 0.8μm dumb nickel layer, and then use a pulse electroplating process to electroplate a layer of 0.4μm dark nickel layer on the outer surface of the dumb nickel layer to form a core layer;

[0036] c. Clean the core layer with clean water, then dry it with a hot air blower, and leave it to cool fo...

Embodiment 2

[0043] A preparation method for a lithium battery steel-plastic film, comprising the steps of:

[0044] a. Take SPCE low-carbon steel foil with a thickness of 60 μm, clean its surface with alcohol with a concentration of 97%, and then dry the cleaned SPCE low-carbon steel foil with a hot air blower, and place it for cooling after drying 6 minutes, then activate the surface;

[0045] b. Pre-plate a layer of ultra-thin nickel layer on both sides of the surface of SPCE low-carbon steel foil by pulse electroplating process as the iron-nickel bonding layer, and then use DC electroplating process to electroplate a layer thickness on the two outer surfaces of the iron-nickel bonding layer A dull nickel layer of 2 μm is used, and then a layer of dark nickel layer with a thickness of 1 μm is electroplated on the outer surfaces of the dumb nickel layer by pulse electroplating process to form a core layer;

[0046] c. Wash the core layer with clean water, then dry it with a hot air blow...

Embodiment 3

[0053] A preparation method for a lithium battery steel-plastic film, comprising the steps of:

[0054] a. Take SPCE low-carbon steel foil with a thickness of 36 μm, clean its surface with alcohol with a concentration of 95%, and then dry the cleaned SPCE low-carbon steel foil with a hot air blower, and place it for cooling after drying 5 minutes, then activate the surface;

[0055] b. Pre-plate a layer of ultra-thin nickel layer on both sides of the surface of SPCE low-carbon steel foil by pulse electroplating process as the iron-nickel bonding layer, and then use DC electroplating process to electroplate a layer thickness on the two outer surfaces of the iron-nickel bonding layer A dull nickel layer of 1.4 μm is used, and then a dark nickel layer with a thickness of 0.7 μm is electroplated on both outer surfaces of the dumb nickel layer by a pulse electroplating process to form a core layer;

[0056] c. Clean the core layer with clean water, then dry it with a hot air blowe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a steel plastic film of a lithium battery. The method comprises the following steps a-h: firstly cleaning with alcohol, drying and performing activating treatment; then electroplating each of electroplating layers, so that each of the electroplating layers is more uniform and firmer; cleaning, drying and bonding each of the layers, so that each of the layers is in firmer fit; finally performing one-time pressing; through the final one-time pressing, the overall quality of a final product is greatly improved; on the basis of ensuring the strength and the hardness of the steel plastic film of the lithium battery, the toughness of the steel plastic film is further improved. Meanwhile, the preparation method disclosed by the invention has the benefits that the thicknesses and the processing temperatures of various materials are reasonably and optimally selected, so that the performance of the obtained final product is greatly improved; the smooth proceeding of the steps is more optimized; therefore, practical values are stronger.

Description

technical field [0001] The invention relates to the field of lithium battery preparation, in particular to a method for preparing a lithium battery steel-plastic film. Background technique [0002] "Lithium battery" is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time, but in recent years, with the development of science and technology, lithium batteries have become the mainstream now. [0003] At present, regarding the packaging of lithium batteries, one is to use metal steel or aluminum plates to form square or cylindrical packaging through welding processes; the other is to form aluminum-plastic composite film packaging by combining aluminum foil and polypropylene resin....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M50/124
CPCH01M50/124Y02E60/10
Inventor 邓国梁李宇明刘东林魏虎鸣胡昌军
Owner 赣州市中金高能电池材料股份有限公司