Square capacitor and manufacturing method thereof

Abstract

The invention provides a square capacitor comprising a core cladding, a shell and a sealing component. The core cladding is composed of a positive foil, a negative foil and electrolytic paper throughwinding. A positive guide pin and a negative guide pin are connected on the positive foil and the negative foil respectively. The sealing component seals the core cladding in the shell, and the positive guide pin and the negative guide pin stretch out of the shell. The sealing component comprises a rubber plug block and a sealing cap. The rubber plug block is provided with penetrating holes for the positive guide pin and the negative guide pin. The aluminum stems of the positive guide pin and the negative guide pin are extruded in the penetrating holes by the rubber plug block. The sealing capis provided with penetrating through holes for the positive guide pin and the negative guide pin. The penetrating through holes are provided with first sealing steps. The positive guide pin and the negative guide pin and the sealing cap are enabled to be sealed on the first sealing steps through light solidification glue. Second sealing steps are arranged on the external side of the first sealingsteps. Filling and sealing are performed on the second sealing steps through heat solidification glue. The square capacitor has great sealing effect and high manufacturing process operability.

Description

technical field [0001] The invention relates to a capacitor, in particular to a square capacitor and a manufacturing method. Background technique [0002] The traditional capacitor core package and the shell are directly sealed with a rubber plug. However, during high-temperature aging, the electrolyte will boil at high temperature, which may cause gas to evaporate from the joint between the rubber plug and the guide pin. Contents of the invention [0003] The technical problem to be solved by the invention is to overcome the deficiencies of the prior art and provide a square capacitor with good sealing effect and a manufacturing method. [0004] In order to solve the above technical problems, the technical solution proposed by the present invention is: a square capacitor, including a core package, a casing and a sealing assembly, the core package is formed by winding positive electrode foil, negative electrode foil and electrolytic paper and is elliptical, A positive ele...

AI Technical Summary

Problems solved by technology

In the present invention, when the core package is sealed in the shell, it is first sealed with light-curable glue (usually UV glue), and then sealed with heat-curable glue, which solves the problem of electrolyte volatilization due to heating and boiling. question

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