Metallic film capacitor

A metallized film and capacitor technology, which is applied in the field of capacitors, can solve the problems that the metal electrodes cannot be guaranteed to fit tightly, there is a lot of residual air, and the air cannot be completely excluded.

Inactive Publication Date: 2014-06-04
ZHEJIANG QIXING CAPACITOR
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  • Abstract
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  • Claims
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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 t

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Embodiment Construction

[0021] The invention provides a metallized film capacitor, comprising at least two layers of metallized films, the metallized film includes a thin film dielectric layer and metal electrodes spaced apart on the thin film dielectric layer, intermediate margins are arranged between adjacent metal electrodes, metal The electrode includes a substrate and a thickened part arranged on the substrate. The thickened part of two adjacent layers of metallized film corresponds to the middle margin on the other layer of metallized film. After the metallized film is wound and pressed, the thickened part Embedded in the middle margin, the thickened portion fits tightly between the adjacent substrates. Compared with the prior art, it is not easy to bond between the spaced metal electrodes after the metallized film is flattened. In the present invention, a thickened part is arranged on the metal electrode. After the metallized film is wound and flattened, the thickened part can be pressed into t...

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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...

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Application Information

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IPC IPC(8): H01G4/005H01G4/32H01G4/33
Inventor 周水萍刘志勇
Owner ZHEJIANG QIXING CAPACITOR
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