Aluminum electrolytic capacitor

Abstract

The invention belongs to the technical field of electronics, and particularly relates to an aluminum electrolytic capacitor which comprises a cylindrical aluminum shell. A winding layer comprising a diaphragm and an electrode plate is arranged in the aluminum shell; a pair of pins electrically connected with the winding layer is arranged at the bottom of the aluminum shell; and a top cover is arranged at the bottom of the aluminum shell, and a set of cross-shaped pre-breaking grooves are formed in the top of the top cover. The top of the aluminum shell is sleeved with a telescopic sleeve, thetop of the telescopic sleeve is closed, and the telescopic sleeve can deform and extend in the axial direction of the aluminum shell. Electrolyte is prevented from overflowing through the telescopic sleeve after the top cover bursts, and the circuit safety is ensured; through the telescopic sleeve sleeved at the top of the aluminum shell, the capacitor extends inthe axial direction of the aluminumshell when the capacitor bursts, so that electrolyte splashing is avoided, the safety of other electrical components on the circuit board is ensured, and the maintenance cost is reduced.

Description

technical field [0001] The invention belongs to the technical field of electronics, in particular to an aluminum electrolytic capacitor. Background technique [0002] Two conductors that are close to each other, with a layer of non-conductive insulating medium in between, constitute a capacitor. A capacitor stores charge when a voltage is applied between its two plates. The capacitance of a capacitor is numerically equal to the ratio of the amount of charge on a conductive plate to the voltage between the two plates. The basic unit of capacitance of a capacitor is farad (F). Capacitive elements are usually represented by the letter C in circuit diagrams. [0003] A capacitor is an element that stores electricity and electrical energy (potential energy). A conductor surrounded by another conductor, or the electric field lines emitted by one conductor all terminate in another conductor, is called a capacitor. [0004] General capacitor fault phenomenon: capacitor open cir...

AI Technical Summary

Problems solved by technology

[0014] In order to make up for the deficiencies of the existing technology and solve the problem that the voltage of the existing capacitor is too high to cause the capacitor to break down and short circuit, the capacitor emits a large amount of heat, which causes a large amount of high-temperature gas to be generated in the capacitor, and the top cover of the capacitor bursts from the pre-fractured groove. There is no protection for the capacitor, which will cause the internal electrolyte to splash outside after the capacitor bursts, thereby contaminating the circuit board and other electronic components near the capacitor, causing more short-circuit damage problems. An aluminum electrolytic capacitor proposed by the present invention

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