Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Six-level forming method of medium and high voltage aluminum electrolytic capacitor anode foil

An aluminum electrolytic capacitor and the technology of the formation method, which are applied in the direction of capacitor electrodes, capacitor parts, and metal surface removal regulations, can solve the problems of low capacity and low bending strength of the formed foil, and achieve small volume, high bending strength, long life effect

Inactive Publication Date: 2013-07-03
YINGJING XUGUANG ELECTRONICS
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The formed foil produced by this method has low capacity and low bending strength, which cannot meet the current requirements of small volume, high capacity and long life of capacitors.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Put the aluminum foil after electrolytic corrosion treatment through the aluminum feeding roller and put it in the pure water with the temperature of 96°C, the conductivity of 9μs and the pH of 5 for 10 minutes, take it out, wash it, and put it in a place containing 0.2% phosphate, 0.3 % citric acid electrolyte in the primary chemical tank, at 85°C, 106V, 25mA / cm 2 Under the condition of 8 minutes, the primary chemical aluminum foil is obtained; take it out and wash it, and put it in the secondary chemical chemical tank containing the electrolyte solution of 0.1% phosphate, 0.2% citric acid and 0.1% azelaic acid salt, at 85 ℃ , 159V, 25mA / cm 2 Under the conditions of 4 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and put it in the tertiary chemical compound containing 0.05% phosphomolybdate, 0.2% citric acid, 0.3% adipate, 2% boric acid electrolyte In the tank, at 85°C, 370V, 25mA / cm 2 Under the condition of 8 minutes, the three-...

Embodiment 2

[0032] After the electrolytic corrosion treatment, the aluminum foil is placed in pure water with a temperature of 95°C, a conductivity of 7 μs, and a pH of 6 for 5 minutes after passing through an aluminum feed roller. % citric acid electrolyte in the primary chemical tank, at 80°C, 100V, 20mA / cm 2 Under the condition of 15 minutes, the primary aluminum foil is obtained; take it out and wash it, and put it in the secondary chemical formation tank containing the electrolyte solution of 0.3% phosphate, 0.4% citric acid and 0.3% azelaic acid salt, at 80 ℃ , 130V, 20mA / cm 2 Under the conditions of 15 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and put it in the tertiary chemical compound containing 0.1% phosphomolybdate, 0.3% citric acid, 0.6% adipate, 4% boric acid electrolyte In the tank, at 80°C, 300V, 20mA / cm 2 Under the condition of 13 minutes, the third-grade aluminum foil is obtained; take it out and wash it, put it into a liquid f...

Embodiment 3

[0034] After the electrolytic corrosion treatment, the aluminum foil was placed in pure water with a temperature of 98 °C, a conductivity of 6 μs, and a pH of 5.5 for 15 minutes after passing through an aluminum feed roller. % citric acid electrolyte in the primary chemical tank, at 100°C, 110V, 50mA / cm 2 Under the condition of 10 minutes, the first-grade aluminum foil is obtained; take it out and wash it, and put it in the secondary formation tank containing the electrolyte solution of 1% phosphate, 1% citric acid and 1% azelaic acid salt, at 100 ℃, 250V, 50mA / cm 2 Under the conditions of 13 minutes, the secondary chemical aluminum foil is obtained; take it out and wash it, and place it in the tertiary chemical compound containing 1% phosphomolybdate, 1% citric acid, 1% adipate, and 10% boric acid electrolyte In the tank, at 100°C, 400V, 50mA / cm 2 Under the condition of 10 minutes, the third-grade aluminum foil is obtained; take it out and wash it, put it into the liquid fe...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a six-level forming method of a medium and high voltage aluminum electrolytic capacitor anode foil. The six-level forming method comprises the main steps of carrying out high-temperature water treatment on an aluminum foil after electrolytic corrosion treatment after the aluminum foil passes through an aluminum feeder roller, carrying out first-level, second-level and third-level forming, and sequentially carrying out four-level, five-level and six-level forming after liquid feeding, wherein only one forming groove is used in the previous five levels of forming process, five forming grooves are used in the six-th level of forming process, and the three forming grooves in the middle are connected in series. The anode foil prepared by the method is high in capacity and high in bending strength. Compared with the film formed in the prior art, the film formed by using the six-level forming method has the advantages that quality is greatly improved; and the demands of the existing electrolytic capacitor on small size, high capacity and long service life are completely met.

Description

technical field [0001] The invention relates to the manufacturing technology of the anode foil of the medium and high voltage aluminum electrolytic capacitor, in particular to a method for preparing the anode foil of the medium and high voltage aluminum electrolytic capacitor by adopting a six-stage chemical formation method. Background technique [0002] At present, the five-stage forming method of medium and high-voltage forming foil is as follows: the aluminum foil after electrolytic corrosion treatment is treated in pure water at 92-100°C for 5-15 minutes after passing through the aluminum feed roller, and then placed in a place containing 0.1-1 In the aqueous solution of % adipic acid and 0.1-1% adipic acid salt, under the conditions of 70~98℃, voltage 0~150V, and current density 0~50mA, it is formed for 4~15 minutes, and then enters the first stage after washing with pure water. A feed tank, after washing with water, put it in the second electrolytic tank containing 0....

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01G13/06H01G9/04
Inventor 李刚李军周毅刘勇
Owner YINGJING XUGUANG ELECTRONICS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products