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High-reliability solid electrolytic capacitor manufacturing method

A technology of solid-state electrolysis and manufacturing method, applied in the direction of solid electrolytic capacitors, capacitor parts, capacitor electrolyte/absorbent, etc., can solve the problems of increased impedance and reduced capacity, and achieve stable performance, high stability and reliability, The effect of improving productivity

Inactive Publication Date: 2013-01-09
SHENZHEN POLYCAP ELECTRONICS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the liquid electrolytic capacitor uses the electrolyte as the electrolyte, the electrolyte of the liquid electrolytic capacitor will gradually volatilize with the passage of time and the increase of the use temperature, thereby reducing its capacity and increasing its impedance

Method used

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  • High-reliability solid electrolytic capacitor manufacturing method

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Embodiment 1

[0029] A preparation method of a solid electrolytic capacitor, specifically comprising the following steps:

[0030] Step 1: A separator is inserted between the anode foil and the cathode foil, which are made of valve metal and have an oxide film on the surface, are wound into a core pack, and fixed with adhesive tape.

[0031] Step 2: Immerse the core pack in the chemical conversion solution, which is ammonium adipate aqueous solution, and apply voltage to carry out chemical conversion repair, and the chemical conversion time is 15 minutes.

[0032] Step 3: Carry out carbonization treatment on the core bag, the carbonization temperature is 290°C, and the carbonization time is 10 minutes, and then cleaning and drying are carried out.

[0033] Step 4: Put the dried core bag into the alcohol solution of the monomer for impregnation, the impregnation time is 0.5-5 minutes, then dry it at 50°C, and then put it into the alcohol solution of ferric p-toluenesulfonate under vacuum con...

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Abstract

The invention relates to a high-reliability solid electrolytic capacitor and a manufacturing method thereof. The manufacturing method comprises the following steps: performing carbonization, formation and repair on a core formed through winding; then respectively impregnating in a monomer and a oxidizer, and performing polymerization reaction; when the polymerization reaction reaches a certain degree, impregnating the core in the monomer again, and performing polymerization while heating; and then, packaging, aging and sorting. According to the invention, the manufactured solid electrolytic capacitor has the advantages of low equivalent series resistance, low drain current and high reliability.

Description

technical field [0001] The invention relates to a method for manufacturing a solid electrolytic capacitor, in particular to a method for manufacturing a solid electrolytic capacitor with small leakage current and high reliability. technical background [0002] Capacitors are one of the three basic components of the electronics industry and are widely used in various electronic products. Currently, liquid electrolytic capacitors are dominating the market, accounting for the majority share of the capacitor market. However, due to the development of electronic science and technology, electronic products are developing in the direction of high frequency, miniaturization, and high reliability, and the requirements for capacitor performance, especially at high frequency, high and low temperature, have also increased accordingly. [0003] The liquid electrolytic capacitor has a structure as described below: the anode foil and cathode foil formed by valve metals such as aluminum ar...

Claims

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Application Information

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IPC IPC(8): H01G9/15H01G9/025H01G13/04
Inventor 董慧娟
Owner SHENZHEN POLYCAP ELECTRONICS TECH
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