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

Multi-stage high-specific-volume high-pressure aluminum foil formation method

A technology of high-voltage aluminum foil and formation method, which is applied in the manufacture of capacitors, electrolytic capacitors, and electrolytic capacitors. It can solve the problems of many formation steps, high boric acid content, and low conductivity, so as to reduce side reactions, improve CV performance, and product performance. Enhanced effect

Active Publication Date: 2022-01-18
XI AN JIAOTONG UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problems such as high boric acid content and low electrical conductivity in the high-voltage anodic forming liquid in the prior art, and the technical problems such as many forming steps, large leakage current and low specific volume in the high-voltage forming foil, the present invention provides a multi-stage high specific volume A high-voltage aluminum foil formation method that uses the formation liquid and preparation method specified by the formation method to anodize the high-voltage foil can increase the specific capacity of the high-voltage formation foil, reduce leakage current, and improve formation efficiency.

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Multi-stage high-specific-volume high-pressure aluminum foil formation method
  • Multi-stage high-specific-volume high-pressure aluminum foil formation method
  • Multi-stage high-specific-volume high-pressure aluminum foil formation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] First, prepare the primary chemical forming liquid, secondary chemical forming liquid, tertiary chemical forming liquid and replenishing liquid according to the following process:

[0069] 1) Primary chemical conversion solution: add the main solute and auxiliary solute into deionized water, mix evenly, adjust the pH to 5 with ammonia water, and obtain the primary chemical conversion solution. The main solute is a mixture of ammonium adipate and ammonium suberate, the mass fraction of ammonium oxalate in the primary chemical solution is 5%, the mass fraction of ammonium suberate is 5%; the auxiliary solute is the mixture of citric acid and tartaric acid For the mixture, the mass fraction of citric acid in the primary conversion solution is 3%, and the mass fraction of tartaric acid is 2%.

[0070] 2) Secondary chemical formation solution: adding the main solute and auxiliary solute into deionized water, mixing evenly, and adjusting the pH to 5 with ammonia water to obta...

Embodiment 2

[0088] First, prepare the primary chemical forming liquid, secondary chemical forming liquid, tertiary chemical forming liquid and replenishing liquid according to the following process:

[0089] 1) Primary chemical conversion solution: add the main solute and auxiliary solute into deionized water, mix evenly, adjust the pH to 5 with ammonia water, and obtain the primary chemical conversion solution. The main solute is a mixture of ammonium adipate and ammonium suberate, the mass fraction of ammonium oxalate in the primary chemical solution is 4%, the mass fraction of ammonium suberate is 4%; the auxiliary solute is the mixture of citric acid and tartaric acid For the mixture, the mass fraction of citric acid in the primary conversion solution is 2%, and the mass fraction of tartaric acid is 2%.

[0090] 2) Secondary chemical formation solution: adding the main solute and auxiliary solute into deionized water, mixing evenly, and adjusting the pH to 5 with ammonia water to obta...

Embodiment 3

[0108] First, prepare the primary chemical forming liquid, secondary chemical forming liquid, tertiary chemical forming liquid and replenishing liquid according to the following process:

[0109] 1) Primary chemical conversion solution: add the main solute and auxiliary solute into deionized water, mix evenly, adjust the pH to 5 with ammonia water, and obtain the primary chemical conversion solution. The main solute is a mixture of ammonium adipate and ammonium azelate, the mass fraction of ammonium oxalate and ammonium azelate in the primary chemical solution is 3%; the auxiliary solute is citric acid and homophenylene For the mixture of triformic acid, the mass fraction of citric acid in the primary conversion solution is 1.5%, and the mass fraction of trimesic acid is 1.5%.

[0110] 2) Secondary chemical formation solution: adding the main solute and auxiliary solute into deionized water, mixing evenly, and adjusting the pH to 5 with ammonia water to obtain the secondary ch...

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 relates to a multi-stage high-specific-volume high-voltage aluminum foil formation method, which comprises the steps of boiling a high-voltage corrosion aluminum foil suitable for 450-700V, connecting the aluminum foil to the positive electrode end of a direct-current power supply, selecting an aluminum foil as the negative electrode, putting the aluminum foil into a first-stage formation liquid for formation, connecting the aluminum foil to the positive electrode end of the direct-current power supply, selecting an aluminum foil as the negative electrode, placing the aluminum foil into a second-stage formation liquid for formation, connecting the aluminum foil to the positive electrode end of the direct-current power supply, selecting an aluminum foil as the negative electrode, placing the aluminum foil in a third-stage formation liquid for formation, carrying out heat treatment, and placing in a complementary formation liquid for formation. According to different formation voltages, different formation liquids are selected for multi-stage formation, so that the internal resistance consumption can be effectively reduced, the occurrence of side reactions is reduced, the formation efficiency is improved, and the electricity consumption of formation is reduced. Compared with a traditional method, the product performance is greatly improved, the leakage current is reduced by 19% or above, the capacity is improved by 5% or above, and the power consumption is reduced by 5% or above.

Description

technical field [0001] The invention belongs to the field of aluminum electrolytic capacitors, and in particular relates to a method for forming a multi-stage high-voltage aluminum foil with high specific volume. Background technique [0002] Capacitors are one of the world's three major passive electronic components (resistors, capacitors and inductors), occupy an important position in the electronic component industry, and are indispensable basic electronic components in electronic circuits. Aluminum electrolytic capacitors have the advantages of low cost, excellent performance, mature technology, and convenient application, and are in great demand in electronic components and complete machines. [0003] With the continuous development of the electronics industry, the performance requirements for aluminum electrolytic capacitors are getting higher and higher, which promotes the development of aluminum electrolytic capacitors in the direction of miniaturization and long lif...

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): H01G9/00H01G9/045H01G9/055
CPCH01G9/0029H01G9/045H01G9/055Y02E60/10
Inventor 徐友龙李一卓
Owner XI AN JIAOTONG UNIV
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