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

A medium and high voltage solid aluminum electrolytic capacitor and its preparation method

An aluminum electrolytic capacitor, medium and high voltage technology, applied in the direction of solid electrolytic capacitors, etc., can solve the problems of increased internal resistance of solid aluminum electrolytic capacitors, reduced ripple current resistance, and influence on the conductivity of conductive polymers, etc., to achieve improved Ripple current resistance, reduced internal resistance, and improved conductivity

Active Publication Date: 2022-06-10
HUNAN AIHUA GRP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But PEDOT: There will be a large amount of surplus PSS (poly 4-styrene sulfonic acid) in PSS, and PSS is insulating, and a large amount of surplus PSS will seriously affect the conductivity of conductive polymers, making solid aluminum electrolytic capacitors The internal resistance becomes larger and the ability to withstand ripple current decreases

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

[0023] A medium and high voltage solid aluminum electrolytic capacitor, including anode foil, electrolytic paper and cathode foil wound into a core pack, electrolytic paper is set between the anode foil and cathode foil; Between the anode foil and the cathode foil, a conductive polymer consisting of a PEDOT:PSS film etched with concentrated sulfuric acid and dimethyl sulfoxide. In the present embodiment, the PEDOT: PSS film between the anode foil and the cathode foil having two layers.

[0024] The present embodiment also provides a medium and high voltage solid aluminum electrolytic capacitor preparation method, comprising the following steps,

[0025] 1) Add 3-8 parts of dimethyl sulfoxide by weight to the 100 parts by weight of PEDOT:PSS dispersion and stir well; The PEDOT: The weight ratio of PEDOT to PSS in the PSS dispersion is 1:2.5;

[0026] 2) The core contains immersion in the dispersion solution of step 1) containing the dipping and drying after immersion;

[0027] 3) T...

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 medium and high voltage solid aluminum electrolytic capacitor, including a core package composed of anode foil, electrolytic paper and cathode foil, the electrolytic paper is arranged between the anode foil and the cathode foil; a conductive polymer is formed between the anode foil and the cathode foil, Conductive polymers including concentrated sulfuric acid and dimethyl sulfoxide etched PEDOT:PSS membrane. In the present invention, the PEDOT:PSS polymer conductive film is etched by concentrated sulfuric acid and dimethyl sulfoxide to remove the excess PSS on the PEDOT:PSS polymer conductive film, and improve the conductivity of the PEDOT:PSS polymer conductive film , which reduces the internal resistance of solid aluminum electrolytic capacitors and improves their ability to withstand ripple currents.

Description

Technical field [0001] The present invention relates to a solid aluminum electrolytic capacitor, in particular to a medium and high voltage solid aluminum electrolytic capacitor and a preparation method thereof. Background [0002] Solid aluminum electrolytic capacitors have small internal resistance, compared with liquid aluminum electrolytic capacitors, there is no leakage and other problems, so now solid capacitors are widely used in electronic products. Solid aluminum electrolytic capacitor is between the anode foil and cathode foil to form a conductive polymer, common conductive polymer has PEDOT, but when forming PEDOT on the core pack, there will be residue of oxidant on the core pack, because the oxidizer will have a certain corrosiveness of the oxide film of the anode foil, so it will make the solid capacitor withstand voltage value is low, the leakage current is larger, but the PEDOT prepared by this method has a higher conductivity, so the ESR of the capacitor is low, ...

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 Patents(China)
IPC IPC(8): H01G9/15
CPCH01G9/15
Inventor 艾亮贾明刘一民刘晓明樊小平
Owner HUNAN AIHUA GRP
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