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Method for manufacturing supercapacitor

A technology for supercapacitors and manufacturing methods, which is applied in the field of capacitor manufacturing, and can solve problems affecting the life performance of supercapacitors, high heat treatment temperature and long time of supercapacitors, etc.

Active Publication Date: 2015-11-11
TONGLING TONGFEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the deficiencies in the prior art, and provides a method for manufacturing a supercapacitor, which overcomes the problem that the heat treatment temperature of the supercapacitor is too high and the time is long during the manufacturing process, which leads to the aging of the diaphragm material in the supercapacitor and affects the life performance of the supercapacitor. insufficient

Method used

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Examples

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specific Embodiment 1

[0024] In this embodiment, the supercapacitor diaphragm is a material with good temperature resistance, such as a diaphragm made of cellulose diaphragm, glass fiber diaphragm, thermoplastic resin and pulp fiber, polytetrafluoroethylene diaphragm, polyimide diaphragm, TiO 2 The polyimide diaphragm or the aromatic polyimide fiber and cellulose mixture diaphragm, in order to remove the moisture that may be contained in the diaphragm material, in the manufacture of capacitors, the diaphragm can be dried before making the electrode core. A method for manufacturing a supercapacitor provided in this embodiment includes the following steps:

[0025] (1) Preparation of pole pieces: Both sides of the aluminum foil current collector after electrochemical corrosion are first coated with a layer of conductive adhesive, and then the mixture composed of active material, conductive material and binder solution is coated on both sides of the aluminum foil;

[0026] (2) Cold rolling of the pole...

specific Embodiment 2

[0037] In this embodiment, the supercapacitor diaphragm is a polymer material with poor temperature resistance, such as porous polypropylene diaphragm, polyethylene diaphragm, etc., considering the low moisture content of the polymer itself, and proper control of the storage environment and manufacturing environment, the diaphragm may not be used. dry. A method for manufacturing a supercapacitor provided in this embodiment includes the following steps:

[0038] (1) Preparation of pole pieces: Both sides of the aluminum foil current collector after electrochemical corrosion are first coated with a layer of conductive adhesive, and then the mixture composed of active material, conductive material and binder solution is coated on both sides of the aluminum foil;

[0039] (2) Cold rolling of the pole piece: pass the prepared pole piece through the cold rolling mill to make the active material mixture evenly and densely distributed;

[0040] (3) Pole piece drying: put the pole pie...

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PUM

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Abstract

The invention discloses a method for manufacturing a supercapacitor, and the method comprises the steps: pole piece manufacturing: firstly coating two surfaces of an aluminum-foil current collector after electrochemical corrosion with conducting resin, and then coating two surfaces of the aluminum-foil current collector with a mixture made of an active material, a conducting material, and binder solution; pole piece cold rolling; pole piece drying: enabling pole pieces to be placed in a vacuum drying box, drawing off the air, injecting nitrogen, increasing the temperature to 130 DEG C to 140 DEG C, and maintaining the temperature for 8 hour to 12 hour; pole piece and diaphragm separating and cutting; electrode core manufacturing: employing two pole piece rolls and two diaphragm rolls to form electrode cores through winding, and inserting the pole pieces and diaphragms; welding; assembling; liquid injecting; sealing: blocking or removing a reserved liquid injection mouth on a capacitor, and enabling the capacitor to remain sealed. The method provided by the invention can iron out a defect that the service life of the supercapacitor is affected by the aging of the diaphragm materials in the supercapacitor because the supercapacitor is too high in thermal processing temperature and is longer in time in a manufacturing process.

Description

technical field [0001] The invention relates to a method for manufacturing a super capacitor, which belongs to the technical field of capacitor manufacturing. Background technique [0002] The traditional supercapacitor drying method needs to put the supercapacitor into a vacuum drying oven with a vacuum degree of <300Pa and a drying temperature of 120-150°C for drying. The drying time takes 48-72 hours, which has the disadvantage of low drying efficiency, and due to the vacuum The lack of air conduction in the drying furnace makes it difficult for the temperature inside the supercapacitor to reach the set value evenly, making it difficult to completely exchange the moisture in the pores of the activated carbon, and the drying effect is poor; Discoloration and brittleness will occur during high-temperature baking, which will affect the service life. [0003] Chinese patent document CN103745840A discloses a supercapacitor drying method, which improves the traditional supe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/84
CPCY02E60/13
Inventor 汤泽波陈春霞
Owner TONGLING TONGFEI TECH