Aluminum electrolytic capacitors

Abstract

The invention discloses an aluminum electrolytic capacitor, which comprises a top cap, an insulating sleeve, an upper current-collecting disc, a core assembly, a lower current-collecting disc and an outer shell, wherein the core assembly comprises positive electrode aluminum foil, electrolytic paper and negative electrode aluminum foil; the electrolytic paper is clamped between the positive electrode aluminum foil and the negative electrode aluminum foil, and is wound with the positive electrode aluminum foil and the negative electrode aluminum foil to form the core assembly; the outer shell is in a cylinder shape with an opening end, and the upper current-collecting disc, the core assembly and the lower current-collecting disc are embedded in the outer shell in sequence; the positive electrode aluminum foil exposes the electrolytic paper and the negative electrode aluminum foil upwards to form a positive contact end, and the negative electrode aluminum foil exposes the electrolytic paper and the positive electrode aluminum foil upwards to form a negative contact end; the lower current-collecting disc is correspondingly welded and connected with the positive contact end, and the upper current-collecting disc is correspondingly welded and connected with the negative contact end; one end of the insulating sleeve is embedded in the outer shell and sleeves the upper current-collecting disc; and the top cap is connected with the upper current-collecting disc, and is arranged at the other end of the insulating sleeve in a sealed manner. The aluminum electrolytic capacitor provided by the invention has high current carrying capacity and high ripple current resistance.

Description

technical field [0001] The invention relates to the technical field of capacitor manufacturing, in particular to an aluminum electrolytic capacitor. Background technique [0002] At present, aluminum electrolytic capacitors are widely used in industrial power supplies and consumer electronics products. In terms of performance, aluminum electrolytic capacitors are required to withstand high ripples, and meet the requirements of low impedance and ultra-high voltage. The structure of existing aluminum electrolytic capacitors generally includes an aluminum shell and a battery cell. The battery cell includes a positive electrode aluminum foil, a negative electrode aluminum foil, a positive electrode guide pin, and a negative electrode guide pin; the positive electrode guide pin is riveted with the positive electrode aluminum foil, and the negative electrode guide pin is riveted with the negative electrode aluminum foil. Or use foil strips to connect the terminals to the internal ...

AI Technical Summary

Problems solved by technology

[0003] The main purpose of the present invention is to provide an aluminum electrolytic capacitor, which aims to solve the technical problems of the existing aluminum electrolytic capacitors with large impedance and the fuse failure of the guide pin or guide chaff.

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