Wound type solid-state capacitor preparation method

Abstract

The invention relates to a wound type solid-state capacitor preparation method. According to the method, a monomer and an oxidant constituting a conductive polymer is mixed with a retarder, so that amixture solution can be obtained; a wound solid-state aluminum capacitor core is immersed in the mixture solution, so that the uniformly-mixed mixture solution can permeate the inside of the core; andthe core is arranged in a drying oven so as to be subjected to polymerization, so that the conductive polymer PEDOT is uniformly formed in the core. With the method of the invention adopted, four polymer preparation procedures, namely, monomer impregnation, drying, oxidant impregnation and polymerizing in a traditional process are simplified into an impregnation procedure and a polymerization procedure, and therefore, production efficiency can be effectively improved, the capacity extraction rate of a finished capacitor can be effectively improved, and the ESR of the finished capacitor can bereduced.

Description

technical field [0001] The invention relates to the technical field of preparation of solid capacitors, in particular to a method for preparing a winding solid capacitor. Background technique [0002] In the existing solid capacitor preparation technology, the preparation process usually includes cutting, nailing, welding, chemical formation, drying, impregnating monomer, drying, impregnating oxidant, polymerization, assembly, cleaning, aging and other operations. The solid electrolyte in the capacitor is completed by impregnating the monomer, impregnating the oxidant, and polymerization. The specific process is to first impregnate the monomer EDOT into the capacitor core package, and after drying, then impregnate the oxidant into the capacitor core package. , and finally the solid electrolyte PEDOT is formed inside the core pack by means of high temperature polymerization. This method has the following disadvantages: [0003] 1. There are many processes. To form the polym...

AI Technical Summary

Problems solved by technology

[0003] 1. There are many processes. To form the polymer inside the core bag, it needs to go through four processes: impregnating monomer, drying, impregnating oxidant, and polymerizing, which increases the difficulty of management in the process of mass production;

[0004] 2. After the monomer is impregnated, the core bag is then impregnated with the oxidant solution. Cross-impregnation will make the oxidant solution easily polluted, which forces the production to replace the polluted oxidant regularly, resulting in a large waste of raw materials;

[0005] 3. After impregnating the monomer, the monomer will remain in the core bag after drying. During the process of impregnating the oxidant, the monomer may be washed out of the core bag by the oxidant solution, and the product performance will be affected;

[0006] 4. The monomer and oxidant enter into the core bag successively, instead of entering at the same time after uniform mixing, so the monomer and oxidant are not mixed in a complete sense, and there is a risk of poor product performance

Images