Manufacturing method of stainless steel foil and obtained stainless steel foil and steel-plastic film

A technology of stainless steel foil and production method, which is applied in the direction of electrical components, circuits, battery boxes/cover materials, etc., can solve the problems of insufficient surface roughness of stainless steel, difficulty in achieving the use effect, insufficient bonding strength, etc., and achieve improved resistance to electrolyte ability, avoiding material confusion, and uniform distribution of cohesive force
CN105350065BActive Publication Date: 2018-01-26DONGGUAN ZHUOYUE NEW MATERIAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
DONGGUAN ZHUOYUE NEW MATERIAL TECH CO LTD
Publication Date
2018-01-26

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Abstract

The invention provides a method for making stainless steel foil and the obtained stainless steel foil and steel-plastic film. By using low-temperature plasma to clean and degrease the surface of stainless steel, the hydrogen embrittlement of steel foil produced by the traditional pickling and degreasing process is avoided. The piercing strength of the stainless steel foil is improved, and the surface of the stainless steel foil is changed from non-polar and difficult to stick to a certain polarity, easy to stick and hydrophilic, which is more conducive to the combination of the stainless steel surface and the adhesive layer, and improves the Structural stability of the steel-plastic film; by electrochemically corroding the stainless steel foil with a cathode plate with closely arranged fine needles, a dot-like rough layer with closely arranged corrosion pits is formed on the surface of the stainless steel foil, and the roughness Better, the surface contact between the adhesive layer and the stainless steel foil is more sufficient, and the adhesive force distribution between the stainless steel foil and the adhesive layer is more uniform, and the steel-plastic film made has better stability.
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Description

technical field

[0001] The invention relates to the technical field of lithium battery manufacturing, in particular to a method for manufacturing stainless steel foil and the obtained stainless steel foil and steel-plastic film. Background technique

[0002] Lithium-ion batteries usually consist of a positive electrode, a negative electrode, a separator, an electrolyte, and an outer casing. Lithium-ion battery outer packaging shells are divided into aluminum shells, iron shells, aluminum-plastic packaging shells, polymer plastic resin shells, and other shells that use the above materials in combination according to their materials. Due to the higher strength and rigidity of aluminum-plastic packaging shells, more aluminum-plastic packaging shells are currently used for lithium ions.

[0003] As the requirements for the weight volume density and capacity volume density of lithium-ion batteries increase, the requirements for the outer packaging shell are getting higher and hi...

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
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