Preparation method of solid polymer aluminum electrolytic capacitor resistant to high temperature of 150 DEG C

A technology of aluminum electrolytic capacitors and solid polymers, applied in the field of capacitors, can solve the problems of long-term operation of capacitors and poor high temperature resistance

Active Publication Date: 2021-08-13
NANTONG JIANGHAI CAPACITOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the technical problem that the high temperature resistance of solid polymer aluminum electrolytic capacitors is poor so that the capacitors can...

Method used

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  • Preparation method of solid polymer aluminum electrolytic capacitor resistant to high temperature of 150 DEG C
  • Preparation method of solid polymer aluminum electrolytic capacitor resistant to high temperature of 150 DEG C
  • Preparation method of solid polymer aluminum electrolytic capacitor resistant to high temperature of 150 DEG C

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Embodiment 1

[0028] A preparation method of a solid polymer aluminum electrolytic capacitor resistant to high temperatures of 150°C:

[0029] Immersing the capacitor element with aluminum and the dielectric layer formed by the aluminum oxide film in the aqueous dispersion of conductive high molecular polymer, then taking it out, drying it, and operating it at least once, and then obtaining the capacitor element with the conductive high molecular layer; and then Immerse the capacitor element with the conductive polymer layer in the plant polyphenol aqueous solution, take it out, dry it, and operate it at least once to obtain a capacitor element with a self-polymerized protective film of plant polyphenol outside the conductive polymer layer; after assembly Prepared solid polymer aluminum electrolytic capacitor;

[0030] The specific preparation method of the 150°C high temperature resistant solid polymer aluminum electrolytic capacitor of this embodiment is as follows:

[0031] (1) Cut the ...

Embodiment 2

[0037] A preparation method of a solid polymer aluminum electrolytic capacitor resistant to high temperatures of 150°C:

[0038]Immersing the capacitor element with aluminum and the dielectric layer formed by the aluminum oxide film in the aqueous dispersion of conductive high molecular polymer, then taking it out, drying it, and operating it at least once, and then obtaining the capacitor element with the conductive high molecular layer; and then Immerse the capacitor element with the conductive polymer layer in the plant polyphenol aqueous solution, take it out, dry it, and operate it at least once to obtain a capacitor element with a self-polymerized protective film of plant polyphenol outside the conductive polymer layer; after assembly Prepared solid polymer aluminum electrolytic capacitor;

[0039] The specific preparation method of the 150°C high temperature resistant solid polymer aluminum electrolytic capacitor of this embodiment is as follows:

[0040] (1) Cut the p...

Embodiment 3

[0046] A preparation method of a solid polymer aluminum electrolytic capacitor resistant to high temperatures of 150°C:

[0047] Immersing the capacitor element with aluminum and the dielectric layer formed by the aluminum oxide film in the aqueous dispersion of conductive high molecular polymer, then taking it out, drying it, and operating it at least once, and then obtaining the capacitor element with the conductive high molecular layer; and then Immerse the capacitor element with the conductive polymer layer in the plant polyphenol aqueous solution, take it out, dry it, and operate it at least once to obtain a capacitor element with a self-polymerized protective film of plant polyphenol outside the conductive polymer layer; after assembly Prepared solid polymer aluminum electrolytic capacitor;

[0048] The specific preparation method of the 150°C high temperature resistant solid polymer aluminum electrolytic capacitor of this embodiment is as follows:

[0049] (1) Cut the ...

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Abstract

The invention relates to a preparation method of a solid polymer aluminum electrolytic capacitor resistant to a high temperature of 150 DEG C. The preparation method comprises the following steps of: impregnating a capacitor element with aluminum and a dielectric layer formed by an aluminum oxide film in a conductive high-molecular polymer aqueous dispersion, then taking the capacitor element out, drying, and carrying out at least one operation to obtain the capacitor element with a conductive polymer layer; soaking the capacitor element in a plant polyphenol aqueous solution, taking out the capacitor element after soaking for at least 20 minutes, drying it at 155-165 DEG C for 1-3 hours, and performing at least one operation to obtain the capacitor element with a plant polyphenol auto-polymerization protective film outside the conductive polymer layer, wherein the plant polyphenol in the plant polyphenol aqueous solution comprises at least one of a flavonoid compound, a tannin compound, an anthocyanin compound and a phenolic acid compound;; and preparing the solid polymer aluminum electrolytic capacitor resistant to the high temperature of 150 DEG C after assembly. According to the preparation method, the high-temperature resistance of the solid polymer aluminum electrolytic capacitor can be improved, and the leakage current can be reduced.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a method for preparing a solid polymer aluminum electrolytic capacitor resistant to a high temperature of 150°C. Background technique [0002] Traditional solid polymer aluminum electrolytic capacitors are generally made by two production processes: ① EDOT in-situ polymerization to form polymers; ② PEDOT / PSS pre-polymerization to impregnate and dry to form polymers. In these two processes ① due to the strong corrosiveness of the in-situ polymerized material, it will cause damage to the insulating oxide film on the surface of the positive electrode foil, resulting in a large leakage current and low withstand voltage of the final capacitor. Therefore, this process is generally used Production of capacitors within 25V. The process ②PEDOT / PSS pre-polymerization process does not have the corrosiveness of in-situ polymerization, so it greatly improves the problems of low withstand ...

Claims

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Application Information

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IPC IPC(8): H01G9/15H01G9/14H01G9/08
CPCH01G9/08H01G9/14H01G9/15
Inventor 韩红军丰骏丁云飞陈钰何睿睿
Owner NANTONG JIANGHAI CAPACITOR CO LTD
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