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Manufacturing method for high-voltage solid electrolyte aluminum electrolytic capacitor

A technology of aluminum electrolytic capacitors and solid electrolytes, applied in the direction of solid electrolytic capacitors, electrolytic capacitor manufacturing, electrolytic capacitors, etc., can solve the problems of difficult size, poor consistency, and poor water wettability, etc., achieve low ESR, improve electrical performance, The effect of increasing the lead-out rate

Active Publication Date: 2015-05-20
ZHAOQING BERYL ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the current technology, the problem of poor wettability of water is not considered, and a relatively common impregnation method is adopted. Therefore, in terms of the extraction rate of the product, it is difficult to make a larger size, such as a size exceeding Φ10*12mm, or the consistency is poor.

Method used

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  • Manufacturing method for high-voltage solid electrolyte aluminum electrolytic capacitor
  • Manufacturing method for high-voltage solid electrolyte aluminum electrolytic capacitor
  • Manufacturing method for high-voltage solid electrolyte aluminum electrolytic capacitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] 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:

[0093](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 the...

Embodiment 2

[0103] 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.

[0104] Table 2 is the performance test of the capacitor that embodiment 2 makes

[0105]

[0106]

Embodiment 3

[0108] 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.

[0109] Table 3 is the performance test of the capacitor that embodiment 3 makes

[0110]

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Abstract

The invention discloses a manufacturing method for a high-voltage solid electrolyte aluminum electrolytic capacitor. The manufacturing method comprises the following steps: firstly, welding a core cladding on an iron bar, applying voltage for formation, and then performing cleaning and drying; secondly, immersing the dried core cladding in a dispersoid A for 1-30 minutes; thirdly, moving the core cladding out of the dispersoid A, vacuumizing the core cladding and then immersing the core cladding into the dispersoid A for 1-10 minutes; fourthly, retaining the core cladding in the dispersoid A, breaking vacuum and then pressurizing, and maintaining the immersion time for 1-10 minutes; fifthly, retaining the core cladding into the dispersoid A, deflating to normal voltage and maintaining the immersion time for 1-10 minutes; sixthly, taking out the core cladding, placing the core cladding at the temperature 65-100DEG C and drying for 20-60 minutes, placing the core cladding at the temperature of 135-165DEG C and drying for 20-60 minutes; seventhly, at least repeating the third step to the sixth step once; eighthly, placing the treated substance in a casing, sealing and performing ageing treatment, wherein the dispersoid A is a dispersoid containing conducting polymer. According to the manufacturing method, a solid-state capacitor with a lower ESR (Equivalent Series Resistance) value and a higher voltage resisting value can be obtained; meanwhile, lower leak current is obtained.

Description

technical field [0001] The invention relates to the technical field of preparation of electrolytic capacitors, in particular to a method for manufacturing high-voltage solid electrolyte aluminum electrolytic capacitors. 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 th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/025H01G9/15
CPCH01G9/0029H01G9/15
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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