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Treatment fluid for improving withstand voltage of solid capacitor and preparation method of solid capacitor

A technology of solid capacitors and treatment liquids, which is applied in the direction of solid electrolytic capacitors, electrolytic capacitor manufacturing, electrolytic capacitors, etc., can solve the problems of not having the ability to repair the positive oxide film, the reliability performance needs to be improved, and the ability to suppress short-circuit is low, so as to achieve improvement Break through the voltage characteristics, increase the capacity lead-out rate, and improve the effect of capacity decay change rate

Active Publication Date: 2019-02-01
CAPXON ELECTRONIC (SHENZHEN) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Solid capacitor, also known as solid aluminum electrolytic capacitor, its dielectric material is solid conductive polymer material, compared with liquid aluminum electrolytic capacitor, it has high stability, long service life, low ESR and high rated ripple current, etc. Advantages, but it does not have the ability of the electrolyte of liquid aluminum electrolytic capacitors to repair the defects of the positive oxide film, and the ability to inhibit short-circuit is low. Its failure mode is short-circuit. There is a high possibility that it may even cause a short circuit, and the reliability performance needs to be improved

Method used

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  • Treatment fluid for improving withstand voltage of solid capacitor and preparation method of solid capacitor
  • Treatment fluid for improving withstand voltage of solid capacitor and preparation method of solid capacitor
  • Treatment fluid for improving withstand voltage of solid capacitor and preparation method of solid capacitor

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Embodiment Construction

[0017] The present invention is further described below in conjunction with specific embodiment:

[0018] This embodiment is used for the treatment liquid of solid capacitor withstand voltage improvement, and its raw material composition, by weight percentage, comprises 35% of polyethylene glycol 200, 1.5% of polyethylene glycol 4000 (PEG), 15% of Ethylene glycol (EG), 10% gamma-butyrolactone (GBL), 15% ethanol, 17.5% water, 5% phthalic acid and 1.0% triethanolamine.

[0019] The specifications of the solid capacitor impregnated with the above treatment liquid are PF 30V 820μF, the size is 10*18, and its preparation method includes the following steps:

[0020] 1) Cut the positive electrode aluminum foil, negative electrode aluminum foil and electrolytic paper according to the designed size through a nail coiler, and rivet the positive and negative electrode aluminum foils on the positive electrode aluminum foil and the negative electrode aluminum foil respectively, and then w...

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Abstract

The invention discloses a treatment fluid for improving the withstand voltage of a solid capacitor. The treatment fluid is prepared from raw materials including a solvent and a solute, the solvent comprises a water-system high-molecular material and an organic solvent, the water-system high-molecular material includes a macromolecular compound in the molecular weight of 200-1000 and a macromolecular compound in the molecular weight of 2000-10000, and the solute comprises an organic and / or inorganic acid as well as amine which can react with the organic and / or inorganic acid to generate salt. The invention also discloses a preparation method of the solid capacitor in which the treatment fluid is used. After that a capacitor core of the solid capacitor is impregnated in the treatment fluid,an oxide film defect in the surface of an aluminum foil of the capacitor core is overcome, short circuit is inhibited, the withstand voltage is improved by 30% to 50%, the voltage characteristic is improved, the capacity attenuation change rate is reduced, the capacity leading-out rate is improved, the reliability is improved, and the solid capacitor of higher capacitor and small size can be produced.

Description

technical field [0001] The invention relates to the field of solid capacitors, in particular to a treatment liquid for improving the withstand voltage of solid capacitors and a preparation method for solid capacitors. Background technique [0002] With the rapid development of the electronics industry and the wide application of electronic products, especially in the field of AV equipment and automobile production, the requirements for solid capacitors are getting higher and higher, with smaller size, higher capacity, and lower ESR (Equivalent Series Resistance, Series equivalent resistance) and LC, as well as better short-circuit resistance performance, are the development direction of solid-state capacitors in the future. [0003] Solid capacitor, also known as solid aluminum electrolytic capacitor, its dielectric material is solid conductive polymer material, compared with liquid aluminum electrolytic capacitor, it has high stability, long service life, low ESR and high r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/15H01G9/04H01G9/028H01G9/00
CPCH01G9/0032H01G9/0036H01G9/028H01G9/04H01G9/151
Inventor 熊军林薏竹
Owner CAPXON ELECTRONIC (SHENZHEN) CO LTD
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