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

Formation method of high ripple current resisting electrode foil

A formation method and ripple current technology, applied in electrolytic capacitors, circuits, capacitors, etc., can solve the problems of high current density required by the process, poor tolerance of large ripple current, low production efficiency, etc., to improve the formation efficiency and quality. , the effect of saving a lot of electric energy

Inactive Publication Date: 2017-10-24
新疆金泰新材料技术股份有限公司
View PDF8 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using this manufacturing method of electrode foil, the process requires high current density, high energy consumption, and low production efficiency, and the electrode foil manufactured by the above manufacturing method has poor tolerance to large ripple current

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

[0020] A method for forming an electrode foil resistant to large ripple currents, the specific implementation steps are as follows:

[0021] (1) Pretreatment: Put the corroded aluminum foil with a purity of 99.99wt% in pure water at a temperature of 98°C for 9 minutes, then depolarize the aluminum foil in 5wt% fumaric acid aqueous solution, fumaric acid The temperature of the acid aqueous solution is 79.9°C;

[0022] (2) One-stage chemical formation: immerse the pretreated aluminum foil in 5wt% ammonium dihydrogen phosphate aqueous solution, at 86°C, 10mA / cm 2 , Under the condition of 120V, the formation time is 6min;

[0023] (3) Secondary formation: the aluminum foil after primary formation is immersed in 3wt% ammonium dihydrogen phosphate aqueous solution, at 86°C, 10mA / cm 2 , Under the condition of 250V, the formation time is 6min;

[0024] (4) Tertiary formation: the aluminum foil after the secondary formation is immersed in 0.5wt% ammonium dihydrogen phosphate aqueous...

Embodiment 2

[0030] A method for forming an electrode foil resistant to large ripple currents, the specific implementation steps are as follows:

[0031] (1) Pretreatment: Put the corroded aluminum foil with a purity of 99.99wt% in pure water at a temperature of 97°C for 12 minutes, then depolarize the aluminum foil in 1wt% fumaric acid aqueous solution, fumaric acid The temperature of the acid solution is 70°C;

[0032] (2) One-stage chemical formation: immerse the pretreated aluminum foil in 4wt% ammonium dihydrogen phosphate aqueous solution at 85°C, 8mA / cm 2 , Under the condition of 120V, the formation time is 6min;

[0033] (3) Secondary formation: the aluminum foil after the primary formation is immersed in 2wt% ammonium dihydrogen phosphate aqueous solution, at 85°C, 8mA / cm 2 , Under the condition of 250V, the formation time is 6min;

[0034] (4) Tertiary formation: the aluminum foil after the secondary formation is immersed in 1wt% ammonium dihydrogen phosphate aqueous solution,...

Embodiment 3

[0040] A method for forming an electrode foil resistant to large ripple currents, the specific implementation steps are as follows:

[0041] (1) Pretreatment: Put the corroded aluminum foil with a purity of 99.99wt% in pure water at a temperature of 98°C for 10 minutes, and then depolarize the aluminum foil in 4wt% fumaric acid aqueous solution. The temperature of the acid solution is 80°C;

[0042] (2) One-stage chemical formation: immerse the pretreated aluminum foil in 4wt% ammonium dihydrogen phosphate aqueous solution, at 86°C, 9mA / cm 2 , Under the condition of 120V, the formation time is 6min;

[0043] (3) Secondary formation: the aluminum foil after primary formation is immersed in 3wt% ammonium dihydrogen phosphate aqueous solution, at 86°C, 9mA / cm 2 , Under the condition of 250V, the formation time is 6min;

[0044] (4) Tertiary formation: the aluminum foil after the secondary formation is immersed in 0.5wt% ammonium dihydrogen phosphate aqueous solution, at 86°C, ...

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 formation method of a high ripple current resisting electrode foil. The formation method comprises first-grade formation, second-grade formation, third-grade formation, fourth-grade formation and fifth-grade formation of an aluminum foil, wherein the first-grade formation, the second-grade formation and the third-grade formation of the aluminum foil are all performed in ammonium dihydrogen phosphate water solution; and the fourth-grade formation and the fifth-grade formation of the aluminum foil are both performed in water solution containing boric acid and ammonium pentaborate. The electrode foil manufactured by using the method can resist high ripple current; and the quality of the electrode foil is effectively improved.

Description

technical field [0001] The invention belongs to the field of electrode foil production, and in particular relates to a method for forming an electrode foil resistant to large ripple current. Background technique [0002] The current manufacturing method of the electrode foil for medium and high voltage aluminum electrolytic capacitors is as follows: immerse the corroded aluminum foil with a purity of 99.99wt% in pure water at 95-100°C for 10 minutes; take it out and place it in 0.1 In the aqueous solution of the adipic acid of wt% and the ammonium adipate of 2wt%, under the condition of 85 ℃, current density of 20mA / cm2, and voltage of 200v, the first-order conversion is 18min; then placed in 7wt% of boric acid and 0.4 In the aqueous solution of wt% ammonium pentaborate, under the conditions of 85°C, current density of 20mA / cm2, and voltage of 430v, secondary conversion was performed for 18min; then placed in the aqueous solution of 7wt% boric acid and 0.3wt% ammonium pentab...

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): C25D11/12H01G9/055
CPCC25D11/12H01G9/055
Inventor 严民陈宇峰
Owner 新疆金泰新材料技术股份有限公司
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com