Preparation device for 4.5 microns ultrathin electrolytic copper foils and preparation process thereof

A technology of electrolytic copper foil and preparation equipment, which is applied in the direction of electrolysis, electroforming, etc., can solve problems such as copper foil wrinkling and copper foil fracture, and achieve the effect of improving tensile strength and elongation and meeting the needs

Active Publication Date: 2020-05-15
TAIXING SHENGDA COPPER IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the 4.5-micron copper foil produced is very thin, there are technical problems such as tearing on both sides of the cathode roller, which causes the copper foil to break and the copper foil to wrinkle.

Method used

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  • Preparation device for 4.5 microns ultrathin electrolytic copper foils and preparation process thereof
  • Preparation device for 4.5 microns ultrathin electrolytic copper foils and preparation process thereof
  • Preparation device for 4.5 microns ultrathin electrolytic copper foils and preparation process thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see Figure 1-4 As shown, the present invention achieves the above object through the following technical scheme, a preparation device of 4.5um ultra-thin electrolytic copper foil, comprising an anode tank base platform 1, the top of the anode tank base platform 1 is connected with a support seat 2, and supports A cathode roller 3 is rotatably connected to the seat 2, and an anode tank mechanism 4 is arranged between the cathode roller 3 and the supporting seat 2.

[0053] The top of the support base 2 is provided with a second-layer table top 5, and the second-layer table top 5 is respectively provided with a brushing mechanism 6, a peeling and trimming mechanism 7, an anti-oxidation mechanism 8, a drying fan cooling mechanism 9, a water washing mechanism 10 and a winding mechanism 11.

[0054] The top of the second-floor platform 5 is connected with a first support frame 601 , on which a support block 603 is slidably connected by a reciprocating drive motor 602 , and...

Embodiment 2

[0063] A preparation process of 4.5um ultra-thin electrolytic copper foil, which adopts the preparation device of embodiment 1, comprising the following steps:

[0064] S1, cutting the electrolytic copper into strips or blocks before loading into the copper melting tank;

[0065] S2, put the copper material into a copper-dissolving tank with high solvency, add sulfuric acid and pure water to prepare a sulfuric acid solution, and then blow air into the copper-dissolving tank;

[0066] S3, performing multi-stage filtration to the copper sulfate solution configured in step S2;

[0067] S4, the prepared copper sulfate solution is pumped from the supply liquid to a fully-sealed high-level tank and cooled by a heat exchanger for standby. The copper sulfate solution is transported by a pipeline, and the flow of the electrolyte is adjusted through a valve;

[0068] S5, electrolyzing the copper foil, and adding additives in the electrodeposition tank during electrolysis;

[0069] S6,...

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Abstract

The invention discloses a preparation device for 4.5 microns ultrathin electrolytic copper foils and a preparation process thereof to achieve the purpose through the following technical scheme. The preparation device comprises an anode tank, a cathode roller, a conductive device, a online grinding mechanism, a water washing mechanism, a stripping and trimming mechanism, an oxidation preventing mechanism, a drying fan cooling mechanism, and a winding mechanism. The preparation process enables each performance of products to meet related index requirements mainly through control of the electrolyte flow, the electrolyte temperature, the electrolyte major constituents, the electrolyte micro-components, the direct current amount and the additive process. The invention effectively solves the edge tearing problem of the cathode roller and the corrugation problem of copper foils in the production process, and meanwhile, improves the tensile strength and ductility of products and meets the demands of high-end customers to key physical indexes of the copper foils through the research and development breakthrough on the key technologies such as an electrolyte preparation technology and a rawfoil manufacturing process.

Description

technical field [0001] The invention belongs to the field of preparation of electrolytic copper foil, in particular to a preparation device and a preparation process of 4.5um ultra-thin electrolytic copper foil. Background technique [0002] Lithium battery copper foil is mainly used as the negative electrode current collector of lithium battery materials. Based on electrodeposition analysis technology, on the basis of 6μm ultra-thin copper foil products, through research and development breakthroughs in key technologies such as electrolyte preparation technology, raw foil manufacturing process, and product slitting technology, the development of 4.5μm high-performance, high-precision ultra-thin power Lithium battery copper foil, the key indicators such as tensile strength and elongation of the product have reached the world's advanced level, which has increased the battery life of power lithium batteries by more than 20%, and further established China's leading position in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D1/04C25D1/20C25D3/38
CPCC25D1/04C25D1/20C25D3/38
Inventor 李民陶炳贞杨孝坤
Owner TAIXING SHENGDA COPPER IND CO LTD
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