An electrolytic capacitor for overheat and overcurrent protection

Abstract

The invention discloses an electrolytic capacitor for overheating and overcurrent protection, which comprises a casing, two terminals and a working layer, the working layer includes electrolytic paper, cathode foil and anode foil and forms a cylindrical structure, and the casing is located on the working layer A cavity is opened above, one of the terminals communicates with the cathode foil, and the other terminal is connected to a first conductive plate at one end of the cavity in the shell, and the bottom of the first conductive plate abuts against a second conductive plate, so A spring is fixedly connected to the bottom of the second conductive plate, and a connection plate is fixedly connected to the spring, and the connection plate is laid on the bottom of the cavity and connected through the working layer of the conductive rod. The advantage is that the present invention, by memorizing the twisting characteristics of the torsion ring of the metal material when heated, drives the components in the capacitor to be disconnected for a period of time when the temperature is high, and supplies the stored electric energy to the impeller, thereby rapidly dissipating heat from the capacitor and avoiding When the temperature is too high, the insulating shell of the capacitor will age, which will affect its service life.

Description

technical field [0001] The invention relates to the technical field related to capacitors, in particular to an electrolytic capacitor for overheating and overcurrent protection. Background technique [0002] Inside the electrolytic capacitor, there is an electrolyte material that stores charge, which is divided into positive and negative polarities. It is similar to a battery and cannot be reversed. The positive electrode is a metal substrate with an oxide film, and the negative electrode is connected to the electrolyte (solid and non-solid) through a metal plate. . [0003] In the prior art, the electrolytic capacitor has a higher capacitance, but its high capacity is also sacrificed in exchange for many other characteristics, such as a larger leakage current, a larger equivalent series inductance, resistance, and capacitance The error is large and the life is short, and the disadvantages, especially under the conditions of overheating and high leakage current, are prone t...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of thermal breakdown, capacitor aging, etc., which affect the service life of electrolytic capacitors in the state of overheating and overcurrent in the prior art, and propose an electrolytic capacitor with overheating and overcurrent protection

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