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Manufacturing method of solid electrolyte aluminum electrolytic capacitor

An aluminum electrolytic capacitor, solid electrolyte technology, applied in solid electrolytic capacitors, electrolytic capacitors, capacitors and other directions, can solve the problems of unsatisfactory high temperature resistance, low production efficiency, large energy consumption, etc., achieve good consistency and reduce production costs , the effect of good air permeability

Active Publication Date: 2015-08-26
FOSHAN SANSHUI RIMING ELECTRONCS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As can be seen from the above, although the patented method can improve the consistency of capacitor products, it must adopt multiple formation and carbonization processes, the process is complicated, and the production efficiency is low. Moreover, the carbonization is carried out at high temperature, which consumes a lot of energy and is more critical. Unfortunately, the products produced by such a process usually have large leakage and unsatisfactory high temperature resistance, and the service life is usually about 5000 hours at 105°C or 3000 hours at 125°C

Method used

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  • Manufacturing method of solid electrolyte aluminum electrolytic capacitor
  • Manufacturing method of solid electrolyte aluminum electrolytic capacitor
  • Manufacturing method of solid electrolyte aluminum electrolytic capacitor

Examples

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Embodiment 1

[0035] like figure 1 As shown, this example provides an electrolytic paper used in the manufacture of electrolytic aluminum electrolytic capacitors, which is composed of three layers of non-woven fabrics, wherein the upper layer 1 and the lower layer 3 are polyester spunbonded non-woven fabrics with a thickness of about 20 μm; the middle layer 2 is a PET non-woven fabric with a thickness of 25 μm, the average diameter of the polyester fibers constituting the polyester spunbond non-woven fabric is 10-20 μm, and the average diameter of the PET fibers constituting the PET non-woven fabric is 0.5-2.0 μm.

Embodiment 2

[0037] This embodiment provides a manufacturing method of a 6.3V2200μF 13*16.5mm shell size capacitor product, which includes the following steps in sequence:

[0038] (1), using an anodized aluminum foil with a formation voltage of 9VF, and a cathode foil with infinite capacitance, insert the electrolytic paper provided in Example 1 between the anodized aluminum foil and the cathode foil and wind it into a core package with a theoretical capacity of 3300 μF ;

[0039] (2), immerse the core pack in the aqueous chemical solution (10wt% ammonium adipate aqueous solution) to carry out the chemical conversion repair treatment, and the treatment time is 35 minutes;

[0040] (3) Put the core pack in an oven with a temperature of 125°C±10°C and dry it for 25 minutes;

[0041] (4), carry out monomer impregnation to core bag, impregnation time 2 minutes, after finishing, remove solvent;

[0042] (5) Immerse the core in the oxidizing agent. The method of impregnation is to first immer...

Embodiment 3

[0067] This embodiment provides a manufacturing method for a 16V6800μF 18*36.5mm shell size capacitor product, which includes the following steps in sequence:

[0068] (1), using an anodized aluminum foil with a formation voltage of 32VF, and a cathode foil with infinite capacitance, insert the electrolytic paper provided in Example 1 between the anodized aluminum foil and the cathode foil and wind it into a core pack with a theoretical capacity of 6850 μF ;

[0069] (2), immerse the core pack in the aqueous chemical solution (10wt% ammonium adipate aqueous solution) to carry out the chemical conversion repair treatment, and the treatment time is 35 minutes;

[0070] (3) Put the core pack in an oven with a temperature of 125°C±10°C and dry it for 25 minutes;

[0071] (4), carry out monomer impregnation to core bag, impregnation time 2 minutes, after finishing, remove solvent;

[0072] (5) Immerse the core in the oxidizing agent. The method of impregnation is to first immerse...

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Abstract

The invention relates to a method for manufacturing a solid electrolyte aluminum electrolytic capacitor. The method for manufacturing the solid electrolyte aluminum electrolytic capacitor includes a step of involving electrolytic paper between anode formed aluminum foil and cathode foil and winding the electrolytic paper into a core package, a step of conducting one-time formation repair, and a step of impregnating a monomer and oxidizing agent, wherein the electrolytic paper is composed of three layers of non-woven fabric, the upper layer and the lower layer are dacron spunbond non-woven fabric with a thickness of 10-30 microns, and the middle layer is PET non-woven fabric with a thickness of 10-40 microns. A method for impregnating the oxidizing agent includes the following steps of conducting ordinary-pressure impregnation for 0.1-10 minutes, conducting vacuum impregnation for 0.1-10 minutes, and conducting pressurized impregnation for 1-20 minutes. According to the method for manufacturing the solid electrolyte aluminum electrolytic capacitor, the step of carbonization is eliminated. The capacitor obtained through the method for manufacturing the solid electrolyte aluminum electrolytic capacitor is good in homogeneity of products and has the service life of 10000 hours and good high-temperature resistance performance. By the adoption of the method for manufacturing the solid electrolyte aluminum electrolytic capacitor, the technology is simplified, production efficiency is greatly improved, and the production cost is greatly reduced.

Description

technical field [0001] The invention relates to the technical field of electrolytic capacitors, in particular to a method for manufacturing a solid electrolyte aluminum electrolytic capacitor. 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. However, due to the limitations of the manufacturing process, there are generally problems of poor product consistency and low pass rate in the solid electrolytic capacitor industry. In order to improve the consistency and qualification rate of solid electrolytic capacitor products, Chinese invention patent publication CN 102592849A proposes a process for manufacturing capacitors by multiple carbonization processes. The process includes the following steps: [0003] 1) Insert electrolytic paper between the anodi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G9/045H01G9/15H01G9/00
Inventor 黄振彬胡用利周威耀胡勇杨宏曾昭武黎展途罗志平王贺平何斌宋文汇
Owner FOSHAN SANSHUI RIMING ELECTRONCS