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

Method for manufacturing amorphous oxidation film aluminum foil

A production method and oxide film technology, applied in the directions of aluminum oxide/aluminum hydroxide, capacitor parts, capacitor electrodes, etc., can solve the problems of large internal resistance, capacitor failure, and excessive change rate, and achieve the effect of small loss

Inactive Publication Date: 2013-01-23
朱健雄
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the existing medium and high pressure aluminum foil is a high-temperature chemical formation process, it is formed into γ-type Al 2 o 3 The dense oxide film, but although the dense oxide film is dense and stable, its internal resistance is large, resulting in a large amount of heat generated when the voltage fluctuates, causing the failure of the capacitor, and it is not suitable for the circuit environment where the rate of change of the voltage drop across the capacitor is too large

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
  • Method for manufacturing amorphous oxidation film aluminum foil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] Below in conjunction with embodiment the present invention is further described.

[0015] A method for making an amorphous oxide film aluminum foil, comprising the steps of:

[0016] A. Choose medium and high pressure corroded aluminum foil, the thickness of medium and high pressure corroded aluminum foil is 75um ~ 120um, and the corroded foil with a corroded aperture of 0.05 microns or more;

[0017] B. Perform a low-temperature chemical conversion process to form amorphous crystalline Al 2 o 3 into foil.

[0018] The low-temperature chemical formation process includes: ①Oxalic acid treatment: the temperature of the oxalic acid solution is 10°C to 30°C, and the solubility of oxalic acid is between 1% and 10%; ②At least three stages of chemical formation are carried out, and ammonium pentaborate or boric acid is used in the chemical formation process Technology, the chemical formation solution in the chemical formation process adopts ammonium pentaborate or boric aci...

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

A method for manufacturing an amorphous oxidation film aluminum foil relates to a method for manufacturing a capacitor aluminum foil. The method for manufacturing the amorphous oxidation film aluminum foil comprises the steps of: A, selecting a middle and high pressure corrosive aluminum foil, wherein the thickness of the middle and high pressure corrosive aluminum foil is 75 microns-120 microns, and a corrosive foil of which the aperture is more than 0.05 microns is corroded, and B, carrying out a low-temperature chemical synthesis technology, and forming an AL2O3 formed foil of amorphous crystal. The compact amorphous AL2O3 oxidation film is formed by the method provided by the invention. The method is small in loss, and suitable for changes of pressure drops at two ends of a capacitor.

Description

technical field [0001] The invention relates to a manufacturing method of capacitor aluminum foil. Background technique [0002] At present, due to the rapid development of power electronics technology, the switching frequency speed of IGBT and MOS tubes has increased, and the ripple current resistance of aluminum electrolytic capacitors must be improved to meet the needs of power electronics development. In addition, increasing the withstand voltage of the aluminum foil can also increase the ripple current resistance, and reducing the specific volume of the aluminum foil can also increase the ripple current resistance, but the effect is not obvious, and a lot of energy is wasted. For example, the specific volume of 400WV, 530uf aluminum foil is 0.68uf / cm 2 , each square meter needs 60 degrees of electricity; 450WV, 620uf aluminum foil has a specific volume of 0.54uf / cm 2 , each square meter needs 80 degrees of electricity. For the line alone, sometimes there is no need f...

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): H01G9/04C01F7/02
Inventor 朱健雄
Owner 朱健雄
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