Preparation process of a solid aluminum electrolytic capacitor and solid aluminum electrolytic capacitor

Abstract

The invention discloses a preparation process of a solid aluminum electrolytic capacitor and the solid aluminum electrolytic capacitor, belonging to the technical field of capacitors. The preparation process of the solid aluminum electrolytic capacitor includes the following steps: first, the core package is subjected to chemical conversion repair treatment; then, under negative pressure conditions, the core after the chemical conversion repair treatment is impregnated with a conductive polymer dispersion; then, the impregnated conductive The core bag after the polymer dispersion is inverted, and then dried, and at the same time, the core bag being dried is energized; then, the dried core contains the post-treatment agent, and is subjected to secondary drying and After assembly, a solid aluminum electrolytic capacitor can be obtained. In the present invention, during the drying treatment of the core package impregnated with the conductive polymer dispersion liquid, the core package is energized, which is equivalent to aging the core package during the drying treatment, so that the subsequent aging treatment process can be omitted. Thereby, energy consumption can be reduced and production efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of capacitors, in particular to a preparation process of a solid aluminum electrolytic capacitor and the solid aluminum electrolytic capacitor. Background technique [0002] At present, the traditional production process of solid aluminum electrolytic capacitors mainly includes nail coiling-welding-chemical formation-drying-impregnation-polymerization or drying-assembly-aging-testing-forming and other processes. Among them, the solid aluminum electrolytic capacitor products with a working voltage below 25V mostly use the preparation process of impregnated monomer plus oxidant polymerization; the high-voltage solid aluminum electrolytic capacitor products with a working voltage above 25V mostly use the preparation process of impregnated conductive polymer dispersion craft. [0003] For high-voltage solid aluminum electrolytic capacitor products, the patent CN105826076A in the prior art discloses a preparatio...

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Problems solved by technology

However, since the impregnated core package needs to be aged after assembly after high-temperature drying treatment in this preparation method, there are problems such as high energy consumption and low production efficiency in this preparation method.