A kind of impregnation method of capacitor element

Abstract

The invention discloses a capacitor element impregnating method, and the method comprises the following steps: 1), enabling a conducting polymer monomer to be placed in a vacuum furnace, and enabling an element to be placed above the conducting polymer monomer; 2), sealing the vacuum furnace, and carrying out the vacuum pumping of the vacuum furnace; 3), enabling the internal temperature of the vacuum furnace to rise 50-100 DEG C, maintaining the temperature for 1-30min; enabling the internal temperature of the vacuum furnace to gradually decrease to the indoor temperature to 5 DEC C, and maintaining the temperature for 1-30min; 4), enabling the element comprising the conducting polymer monomer to be taken out from the vacuum furnace, carrying out the impregnating of an oxidizing agent, and generating a PEDT. The method employs the strong volatility of the conducting polymer monomer, enables the conducting polymer monomer to be able to be placed in a vacuum furnace room in a gaseous phase in a vacuum environment, reduces the temperature to enable monomer molecules to be condensed in the element after a gaseous impregnating time period under the higher temperature, and enables the monomer molecules to enter in an aluminium foil gap better.

Description

Technical field [0001] The invention relates to a capacitor, in particular to a method for impregnating capacitor elements. Background technique [0002] The electrolyte in the solid capacitor enters the capacitor element through the following steps. Firstly, the monomer solution is impregnated to make the monomer enter the capacitor element, and then the oxidant solution is impregnated to make the oxidant enter the element, and finally the solid electrolyte is generated inside the capacitor element through the polymerization process , That is, the space between the aluminum oxide and the cathode foil in the figure (including the inside of the porous electrolytic paper) is filled with the solid electrolyte PEDOT produced by the reaction of the monomer and the oxidant. [0003] Because the pure monomer (liquid) has high viscosity and strong volatility, the monomer solution diluted with methanol or ethanol is used for impregnation to ensure the impregnation efficiency while reducing ...

AI Technical Summary

Problems solved by technology

After impregnation with monomer solution, part of the internal position of the element will be occupied by the solvent, and the solvent entering the element needs to be removed after drying, which will prevent the internal part of the element from being effectively covered by the monomer, affecting the capacity extraction rate; in addition After the solvent is dried and removed, it cannot be recycled, resulting in waste of resources

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