Manufacturing process of aluminum electrolytic capacitor for reducing point discharge phenomenon

Abstract

The invention relates to a process for manufacturing an aluminum electrolytic capacitor to reduce point discharge phenomenon, which is characterized in that, firstly a positive guide needle and a negative needle select surfaces, a tongue part of a positive guide needle is provided on the positive electrode aluminum foil, one surface with burr is contacted with a foil surface of the positive electrode aluminum foil, a tongue part of a negative guide needle is provided under the negative electrode aluminum foil, one surface with burr is contacted with a foil surface of the negative electrode aluminum foil, a layer of electrolytic papers are respectively arranged between the positive electrode aluminum foil and the negative electrode aluminum foil and under the positive electrode aluminum foil, a surface without burr of the positive guide needle is contacted with the electrolytic papers, the positive guide needle and the negative guide needle are back to back, burrs of the two guide needles are face to face, the aluminum electrolytic capacitor is prepared according to the common process. The invention has advantages that the guide pin aluminum tongue burr can not transpierce the electrolytic papers and can reduce the burr point discharge phenomenon, thereby extending life of the product and greatly reducing the product middle-period invalidation phenomenon.

Description

technical field [0001] The invention relates to a manufacturing process of an aluminum electrolytic capacitor that reduces tip discharge phenomenon, and belongs to the technical field of the manufacturing process of an aluminum electrolytic capacitor. Background technique [0002] At present, in the existing aluminum electrolytic capacitor production process, such as figure 1 As shown, the tongue of the positive guide pin 6 is set on the positive electrode aluminum foil 1, the tongue of the negative guide pin 5 is set on the bottom of the negative electrode aluminum foil 2, and the positive electrode aluminum foil 1, the negative electrode aluminum foil 2, and the positive electrode aluminum foil 1 are respectively provided. There is a layer of electrolytic paper 3. There are large burrs on the edge of the aluminum tongue of the positive guide pin 6 and the negative guide pin 5, while the other side has almost no burrs. When the guide pin burrs touch the electrolytic paper, ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the existing aluminum electrolytic capacitor production process, such as figure 1 As shown, the tongue of the positive guide pin 6 is set on the positive electrode aluminum foil 1, the tongue of the negative guide pin 5 is set on the bottom of the negative electrode aluminum foil 2, and the positive electrode aluminum foil 1, the negative electrode aluminum foil 2, and the positive electrode aluminum foil 1 are respectively provided. There is a layer of electrolytic paper 3. There are large burrs on the edge of the aluminum tongue of the positive guide pin 6 and the negative guide pin 5, while the other side has almost no burrs. When the guide pin burrs touch the electrolytic paper, the burrs may pierce the electrolytic paper. Lead to short-circuit breakdown; and the tip discharge effect will occur at the burr of the guide pin in the energized state, and the product will either fail early or have partial breakdown in the middle of use, resulting in a product life that cannot reach the expected goal

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