Manufacturing process for penetrated aluminum foil

A manufacturing process, aluminum foil technology, applied in the field of penetrating aluminum foil manufacturing process, can solve the problems of increased positive electrode resistance, falling off of positive electrode materials, poor bonding force, etc., and achieve the effect of increasing charge and discharge times, shortening running distance, and reducing energy consumption

Inactive Publication Date: 2018-04-20
湖北富奕达电子科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention needs to use a large amount of binders (macromolecular non-conductive substances) to solve the existing aluminum foil and positive electrode material binding degree, so that the resistance of the positive electrode is increased, and the binding force is poor. High temperature seriously affects the service life, and the positive electrode material on the surface of the aluminum foil falls off after a long time of use. We provide a material that roughens the surface of the aluminum foil first, and then uses a laser to perforate the material. After use, the above can be improved. Ion battery life

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  • Manufacturing process for penetrated aluminum foil

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Embodiment Construction

[0022] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0023] A manufacturing process for penetrating aluminum foil, comprising the steps of:

[0024] Step 1: the degreasing stage of the aluminum foil, specifically degreasing the aluminum foil in sodium hydroxide NaOH with a concentration of 0.2-1.0% at 40-50°C for 5-20 seconds;

[0025] Step 2: the aluminum foil roughening stage, specifically, the aluminum foil treated in step 1 is roughened for 5-20 seconds under the condition of hydrochloric acid HCl with a concentration of 8% to 12% and a temperature of 90 to 95°C;

[0026] Step 3: Baking the aluminum foil treated in step 2 under the condition of 250°C to 400°C;

[0027] Step 4: Laser perforation stage, specifically, the aluminum foil processed in step 3 is subjected to laser perforation at normal temperature according to the preset aperture size and hole distribution density;

[0028] Step 5:...

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Abstract

The invention discloses a manufacturing process for a penetrated aluminum foil. The objective of the invention is to overcome the problems that the resistance of positive electrodes increases due to usage of considerable adhesives (high-molecular non-conductive substances) for bonding of aluminum foils and positive electrodes, that the adhesives are poor in boding force, that the service life of lithium ion batteries is severely influenced by high temperature resulting from great resistance in long-term charging and discharging, that positive materials on the surfaces of the aluminum foils fall off after long-term usage and the like in the prior art. To overcome the above problems, the surface of an aluminum foil is subjected to coarsening at first, and then laser perforation of the aluminum foil is carried out; and after usage of the penetrated aluminum foil, the above problems are solved, and the service life of lithium ion batteries is substantially prolonged.

Description

technical field [0001] The invention relates to an aluminum foil etching line device, in particular to a manufacturing process for penetrating aluminum foil. Background technique [0002] It is well known that the existing aluminum foil for the positive electrode of lithium-ion batteries generally uses aluminum foil with a thickness of 0.015 mm to 0.022 mm. In order to increase the bonding degree between the aluminum foil and the positive electrode material, a large amount of binder (non-conductive polymer) is required, which increases the resistance of the positive electrode, and the bonding force is poor. When the lithium ion battery is charged and discharged for a long time, the resistance is high and the temperature is seriously affected. The service life is long, and the positive electrode material on the surface of the aluminum foil will fall off after a long time of use. Contents of the invention [0003] The present invention needs to use a large amount of binder ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1395C23G1/22C23F1/20C23G1/12C23G1/06B23K26/382
CPCB23K26/382C23F1/20C23G1/061C23G1/065C23G1/125C23G1/22H01M4/1395Y02E60/10
Inventor 李慈祥
Owner 湖北富奕达电子科技有限公司
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