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Method for manufacturing electrochemical device

A manufacturing method and electrochemical technology, applied in the manufacture of capacitors, electrochemical generators, hybrid/electric double-layer capacitors, etc., can solve the problems of battery characteristics and life reduction, leakage, deterioration of electrolyte solutions, etc., and achieve excellent reliability. sexual effect

Inactive Publication Date: 2006-03-01
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] If the hole 500 connecting the inside and outside of the casing is formed, liquid leakage will occur, and the battery characteristics and life will be reduced. In addition, when using a non-aqueous electrolyte solution (solution containing an organic compound) as the electrolyte solution, cause the following problems
That is, there are cases where the air flows in from the outside, the moisture contained in the air reacts with the non-aqueous electrolyte solution, generates acid, and corrodes the components of the device, or the oxygen contained in the air reacts with the non-aqueous electrolyte solution. Oxidation reaction of the organic compound and the deterioration of the electrolyte solution, etc., from this point of view, the battery characteristics and life will also be reduced

Method used

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  • Method for manufacturing electrochemical device
  • Method for manufacturing electrochemical device
  • Method for manufacturing electrochemical device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0148] By the following sequence, to manufacture a figure 1 The electrochemical device shown is an electrochemical device (electric double layer capacitor) of the same structure.

[0149] (1) Preparation of electrodes

[0150] An anode (polarizable electrode) and a cathode (polarizable electrode) were produced in the following order. First, the activated carbon material that has been activated, the adhesive {fluororubber}, and the conductive additive (acetylene black) are combined so that their mass ratio is carbon material: adhesive: conductive additive = 80:10:10 , These were put into MIBK (methyl isobutyl ketone) as a solvent and kneaded to prepare a coating liquid for electrode formation (hereinafter referred to as "coating liquid L1").

[0151] Next, this coating liquid L1 is uniformly applied to one surface of a current collector (thickness: 50 μm) made of aluminum foil (here, since a plurality of anodes, separators, and cathodes are used to form the material, they ar...

Embodiment 2

[0163] Instead of the wires used in Example 1, wires having different thicknesses (width: 10 mm, length: 25 mm, thickness: 3.00 mm) were used. And, the cross-sectional shape of the groove 91A of the mold 91 used for the subsequent drawing process is formed into a trapezoid (upper bottom: 10.3mm, lower bottom: 10.5mm, height (thickness): 3.00mm), and the heat welding process The cross-sectional shape of the groove 93A of the first heat welding mold 93 used is formed into a trapezoid (upper base: 10.3 mm, lower base: 10.5 mm, height (thickness): 3.00 mm), and in addition, using and embodiment An electrochemical device was fabricated in the same order and conditions as the electrochemical device of 1.

Embodiment 3

[0165]Instead of the wires used in Example 1, wires having different thicknesses (width: 10 mm, length: 25 mm, thickness: 0.10 mm) were used. And, the cross-sectional shape of the groove 91A of the mold 91 used for the drawing process is formed into a trapezoid (upper bottom: 10.3mm, lower bottom: 10.5mm, height (thickness): 0.10mm), and the heat welding process The cross-sectional shape of the groove 93A of the first heat welding mold 93 used is formed into a trapezoid (upper bottom: 10.3mm, lower bottom: 10.5mm, height (thickness): 0.10mm), in addition, using and embodiment An electrochemical device was fabricated in the same order and conditions as the electrochemical device of 1.

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Abstract

A method of manufacturing an electrochemical device comprising an electrochemical device matrix 60 including first and second electrodes opposing each other; a case, formed by a first film 51 and a second film 52 which oppose each other, for accommodating the electrochemical device matrix in a closed state; a first lead connected to the first electrode; and a second lead connected to the second lead includes a thermal fusion step of thermally fusing the films 51 and 52 to each other while bringing fringes of the films 51 and 52 into contact with each other and pressing the contact portion of the films 51 and 52 , whereas a die 93 (heating member) formed with grooves having respective forms in conformity to forms of cross sections of the leads is used at a part where the first and second leads are placed in the contact portion.

Description

technical field [0001] The present invention relates to a method for manufacturing an electrochemical device, and more specifically, to an electrochemical device including an electrochemical capacitor represented by an electric double layer capacitor and a secondary battery represented by a lithium-ion secondary battery. Manufacturing method. Background technique [0002] Electrochemical capacitors represented by electric double layer capacitors and non-aqueous electrolyte secondary batteries represented by lithium-ion secondary batteries are electrochemical devices that are easy to miniaturize and can be reduced in weight. Therefore, they can be expected to be used as portable devices ( small electronic equipment) or backup power supply, auxiliary power supply for electric vehicles or hybrid vehicles. [0003] For the above-mentioned electrochemical device used as a backup power supply or an auxiliary power supply, there is a case where the load demand on the electronic eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G13/00H01G9/155H01G9/10H01M2/06H01M50/119H01M50/121H01M50/129H01M50/133H01M50/178H01M50/55H01M50/553H01M50/562H01M50/609
CPCH01G9/155H01M10/0525H01M2/36H01M2/0257H01M2/08H01M2/021H01M2/06Y02T10/7022Y02T10/7011Y02E60/13H01M10/0585H01G9/10Y02T10/70Y02E60/10H01G11/80H01G11/76H01G11/74H01M50/562H01M50/121H01M50/129H01M50/178H01M50/609H01M50/133H01M50/55H01M50/553H01M50/119H01G11/84H01M50/20H01M50/10H01M50/543
Inventor 高桥哲哉
Owner TDK CORPARATION