Manufacturing method of supercapacitor

A technology of supercapacitor and manufacturing method, which is applied in the manufacture of hybrid/electric double-layer capacitors, etc., can solve the problems of low production environment requirements, high production environment requirements, short production cycle, etc., and achieves low production environment requirements and is convenient for mass production. , the effect of short production cycle

Active Publication Date: 2015-08-26
ZHAOQING BERYL ELECTRONICS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the above-mentioned deficiencies in the prior art, the present invention provides a method for manufacturing a supercapacitor, which solves the problems that the existing manufacturing method has high requirements on the production environment, low production efficiency, and potential safety hazards for operators. The production environment is low, the production cycle is short, the cost is low and the production efficiency is high. At the same time, it meets the requirements of supercapacitors with extremely low water and oxygen content. It can effectively remove the water and oxygen inside the supercapacitor, especially adsorbed on the surface of the foil and Water and oxygen molecules on the carbon surface to reduce the fluctuation of supercapacitor leakage and various indicators after life test

Method used

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  • Manufacturing method of supercapacitor

Examples

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Embodiment 1

[0053] A method of manufacturing a supercapacitor, comprising the steps of:

[0054] (1) Preparation of electrode sheet and electrolytic paper: store the electrolytic paper and nickel foil electrode sheet at 45°C for 12 hours; the width of the nickel foil electrode sheet is 125mm, of which the carbon width is 110mm, and the blank width is 15mm; the width of the electrolyte 120mm;

[0055] (2) Winding: The ambient humidity of the winding is 13.8g of water per cubic meter of air. Under this humidity, nickel foil electrode sheets, electrolytic paper, nickel foil electrode sheets, and electrolytic paper are overlapped and wound together Form electrode core; the outer diameter of rolled electrode core is controlled within 58mm, and the length is controlled within 140mm;

[0056] (3) Welding: Sweep and compact both ends of the electrode core with a sweeper, and the length after compaction is about 125mm; weld the negative current collector on the lug of the compacted end of the ele...

Embodiment 2

[0064] A method of manufacturing a supercapacitor, comprising the steps of:

[0065] (1) Preparation of electrode sheet and electrolytic paper: store the electrolytic paper and copper foil electrode sheet at 50°C for 18 hours; the width of the copper foil electrode sheet is 125mm, of which the carbon width is 110mm, and the blank width is 15mm; the width of the electrolyte 120mm;

[0066] (2) Winding: The humidity of the environment where the winding is located contains 12g of water per cubic meter of air. Electrode core; the outer diameter of the rolled electrode core is controlled within 58mm, and the length is controlled within 140mm;

[0067] (3) Welding: Sweep and compact both ends of the electrode core with a sweeper, and the length after compaction is about 125mm; weld the negative current collector on the lug of the compacted end of the electrode core, and weld on the negative current collector Cover; Weld the positive current collector on the other end of the electr...

Embodiment 3

[0075] A method of manufacturing a supercapacitor, comprising the steps of:

[0076] (1) Preparation of electrode sheet and electrolytic paper: store electrolytic paper and aluminum foil electrode sheet at 55°C for 24 hours; the width of the aluminum foil electrode sheet is 125mm, of which the carbon width is 110mm, and the blank width is 15mm; the width of the electrolyte is 120mm;

[0077] (2) Winding: The humidity of the environment where the winding is located is 11g of water per cubic meter of air. Under this humidity, the aluminum foil electrode sheet, electrolytic paper, aluminum foil electrode sheet, and electrolytic paper are overlapped and wound together to form an electrode core. ;The outer diameter of the rolled electrode core is controlled within 58mm, and the length is controlled within 140mm;

[0078] (3) Welding: Sweep and compact both ends of the electrode core with a sweeper, and the length after compaction is about 125mm; weld the negat...

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Abstract

The invention discloses a manufacturing method of a supercapacitor. The manufacturing method comprises the following steps: (1) winding to form an electrode core; (2) welding; (3) installing the electrode core in a shell and carrying out slot rolling to prepare a supercapacitor single body; (4) carrying out vacuum heat treatment: putting the supercapacitor single body in the step (3) in an environment at 100-120 DEG C, vacuumizing until the pressure is lower than 6Pa, maintaining the pressure for 1-3.5 hours, then filling dry nitrogen and maintaining the pressure for 1-3.5 hours; repeating the step at least three times; (5) adding a seal rubber plug and sealing an electrolyte injection hole after electrolyte injection. The method has the beneficial effects that the method has low requirements for the production environment and is high in production efficiency; meanwhile, replacement of water and oxygen inside the supercapacitor, especially water and oxygen molecules adsorbed on surfaces of foils and carbon, with dry nitrogen is carried out multiple times at a proper drying temperature to effectively remove heat and meet the extremely low requirements of the supercapacitor for the contents of water and oxygen, thus not only avoiding affecting the properties and stability of the supercapacitor as the materials inside the supercapacitor are damaged but also reducing fluctuation of various indexes after leakage and life tests carried out on the supercapacitor.

Description

technical field [0001] The invention relates to the field of supercapacitors, in particular to a method for manufacturing a wound supercapacitor. Background technique [0002] Supercapacitors are green and environmentally friendly new energy storage components. With the advantages of environmental protection, high power density, and long service life, they are used in the start and stop of automobiles, hybrid vehicles, pure electric vehicles, wind power pitch, forklift power, and elevators. , Intelligent three watches, military industry, aerospace and other emerging fields have a wide range of applications. [0003] Due to its complex structure and many production processes, supercapacitors have extremely high requirements for water and oxygen content in the final product, especially for water. Therefore, the current process is to invest a huge amount of money to control the production environment. The moisture in the production environment is controlled to an extremely low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84H01G11/86
CPCY02E60/13H01G11/84H01G11/86
Inventor 马彦斌刘泳澎袁永张小波廖琼冯炯伟陈伟冬梁冠宏谢前飞
Owner ZHAOQING BERYL ELECTRONICS TECH
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