A solid electrolyte aluminum electrolytic capacitor and its manufacturing method

A technology of aluminum electrolytic capacitors and solid electrolytes, applied in solid electrolytic capacitors, electrolytic capacitors, capacitors, etc., can solve the problems of increased resistance of conductive polymers, impossibility of immersion or immersion, and low performance, so as to improve the lead-out rate, Improve the withstand voltage value and improve the effect of electrical performance

Active Publication Date: 2017-06-30
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings in the prior art, the present invention provides a solid electrolyte aluminum electrolytic capacitor with excellent ESR performance. Growth issues, poor performance, etc.
The present invention also provides a manufacturing method of the solid electrolyte aluminum electrolytic capacitor, the method mainly solves the problem that the micropores cannot be soaked or soaked into a very small amount of conductive polymer and conductive carbon material by impregnating the core package under different pressure environments The problem is not only to improve the withstand voltage, but also to ensure that there are more solid electrolytes in the impregnable area and the distribution is uniform by optimizing the impregnation process

Method used

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  • A solid electrolyte aluminum electrolytic capacitor and its manufacturing method
  • A solid electrolyte aluminum electrolytic capacitor and its manufacturing method
  • A solid electrolyte aluminum electrolytic capacitor and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] The conductive polymer used in the dispersion A in this embodiment is poly-3,4-ethylenedioxythiophene, and its particle size is about 40-80 nm, preferably 60 nm. The capacitor specification is 200V100μF, and the size is Φ16*26mm. The manufacturing method of this capacitor is:

[0109] (1) JCC anode foil (manufactured by Japan Accumulator Industry Co., Ltd.), whose model is HGF110J16-365VF-1.33μF, with a width of 17mm and a length of 491mm; Nanofoil cathode foil, whose model is NF3000, with a width of 17mm and a length of 521mm ; Electrolytic paper Asahi Kasel ADS040060, width 20mm. The anode foil and the cathode foil are wound together into a core package through electrolytic paper, the anode of the core package is welded on the iron bar, the core package is immersed in the chemical solution, and a voltage of 365V is applied according to the voltage of the positive foil in the phosphoric acid system chemical solution. Formation for 20 minutes; after formation, soak th...

Embodiment 2

[0120] Similar to Example 1, 20 capacitors were manufactured and analyzed. The capacitor specification was 200V100μF, and the size was Φ16*26mm. The difference was that step (3) became: keep the core pack in the dispersion A, and pressurize it with compressed air. to 0.5MPa, the impregnation time is 5min, and the other steps and their order remain unchanged; the analysis results are shown in Table 2.

[0121] Table 2 is the performance test of the capacitor that embodiment 2 makes

[0122]

Embodiment 3

[0124] Similar to Example 1, 20 capacitors were manufactured and analyzed. The capacitor specification was 200V100μF, and the size was Φ16*26mm. The difference was that an atmospheric pressure impregnation step was added between steps (3) and (4). The atmospheric pressure impregnation step specifically For: keep the core package in the dispersion A, break the vacuum to normal pressure, and impregnate for 5 minutes; other steps remain unchanged, and the analysis results are shown in Table 3.

[0125] Table 3 is the performance test of the capacitor that embodiment 3 makes

[0126]

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Abstract

Disclosed in the present invention is a solid electrolyte aluminium electrolytic capacitor, comprising an aluminium shell and a core pack, the core pack comprising anodised aluminium foil, cathode foil, and electrolytic paper and a solid electrolyte interposed between the anodised aluminium foil and the cathode foil, the solid electrolyte comprising a conductive polymer and a conductive carbon material. The solid electrolyte aluminium electrolytic capacitor has excellent ESR performance, the solid electrolyte being a conductive polymer and a conductive carbon material, resolving the problems of reduced performance and significantly increased resistance of conductive polymers under high temperatures. Also disclosed in the present invention is a manufacturing method for the solid electrolyte aluminium electrolytic capacitor. The manufacturing method obtains a solid-state capacitor having a low ESR value and a high voltage-resistance value, simultaneously obtaining a low leakage current and good batch consistency.

Description

technical field [0001] The invention relates to the technical field of preparation of electrolytic capacitors, in particular to a solid electrolyte aluminum electrolytic capacitor and a manufacturing method thereof. Background technique [0002] Compared with ordinary liquid electrolytic capacitors, solid electrolytic capacitors have outstanding electrical properties, such as low equivalent series resistance (ESR), high ripple current resistance, long service life, and stable performance. With the continuous upgrading of electronic products and the continuous improvement of their functions and performance, the requirements for high-frequency characteristics of capacitors are getting higher and higher. People reduce the ESR of solid electrolytic capacitors in various ways to meet the high-frequency characteristics of capacitors. . [0003] However, although solid capacitors have irreplaceable advantages, there are two major problems in the current process. One is that the vo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/025H01G9/15H01G9/00
CPCH01G9/025H01G9/15
Inventor 刘泳澎马彦斌袁永罗伟郑萍廖琼李慧峰吴棣荣伍伟桥
Owner ZHAOQING BERYL ELECTRONICS TECH
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