Metallic film capacitor

Abstract

The invention discloses a metallic film capacitor and relates to the field of electrical devices. The metallic film capacitor solves the technical problem that according to the prior art, after a wound metallic film is pressed, tight attaching between metal electrodes can not be guaranteed, a large amount of air is left, and the probability of air breakdown under high pressure is high. The metallic film capacitor comprises at least two metallic films. Each metallic film comprises a film medium layer and metal electrodes arranged on the film medium layer at intervals, wherein middle margins are arranged between adjacent metal electrodes. Each metal electrode comprises a base body and thickened parts arranged on the base body. The thickened parts of one metallic film correspond to the middle margins on the adjacent metallic film. After the metallic films are wound and pressed, the thickened parts are embedded into the middle margins and tightly attached between the adjacent base bodies. The metallic film capacitor is applied to electrical equipment.

Description

【Technical field】 [0001] The invention relates to an electrical component, especially a capacitor. 【Background technique】 [0002] The metallized film of the existing capacitor includes a dielectric layer and metal electrodes arranged at intervals on the dielectric, and the metal electrodes are arranged at intervals so that adjacent metal electrodes are completely separated, so there is a gap between adjacent metal electrodes, and the winding After the metallized film is flattened, the tight fit between the metal electrodes cannot be guaranteed, and there is a lot of residual air. At the same time, the air cannot be completely removed after vacuum oil immersion, and the probability of air breakdown under high pressure is high. 【Content of invention】 [0003] The technical problem solved by the invention is to provide a metallized film capacitor, the inside of the capacitor is closely bonded, and air residue is reduced. [0004] In order to solve the problems of the techno...

AI Technical Summary

Problems solved by technology

[0002] The metallized film of the existing capacitor includes a dielectric layer and metal electrodes arranged at intervals on the dielectric, and the metal electrodes are arranged at intervals so that adjacent metal electrodes are completely separated, so there is a gap between adjacent metal electrodes, and the winding After the metallized film is flattened, the tight fit between the metal electrodes cannot be guaranteed, and there is a lot of residual air. At the same time, the air cannot be completely removed after vacuum oil immersion, and the probability of air breakdown under high pressure is relatively high.

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