Efficient heat dissipation type aluminum electrolytic capacitor

Abstract

The invention relates to an efficient heat dissipation type aluminum electrolytic capacitor which comprises a shell, an element, a lead and a cover plate. The element is arranged in the shell; one end of the lead is connected with the element and the other end passes through the cover plate and is exposed; the cover plate is hermetically connected with the opening of the shell; the cover plate is characterized in that the cover plate is composed of an annular piece, a plate block and an insulating sleeve; the annular piece is hollow, and a groove is formed in the inner circumferential wall of the annular piece in the circumferential direction. The through part of the annular piece is embedded into the plate to form a whole; the part of the outer edge of the plate is embedded into the groove; the plate is provided with a through hole; an insulating sleeve is embedded into the through hole; the element axis is hollow, and a strip-shaped structural body is arranged at the hollow part; and the strip-shaped structural body penetrates through the exposed upper end of the element axis and abuts against the lower end face of the plate. Heat in the inner cavity of the capacitor and the element is quickly and efficiently released through the cover plate, so that the efficient heat dissipation effect is achieved, and the ripple current resistance and high temperature resistance of the product are improved.

Description

technical field [0001] The invention belongs to the technical field of capacitors, in particular to an efficient heat dissipation aluminum electrolytic capacitor. Background technique [0002] Capacitors are one of the electronic components widely used in electronic equipment and are an essential part of circuits. Due to the development of electronic science and technology, electronic products are developing in the direction of high frequency, miniaturization, and high reliability, and the requirements for capacitor performance, especially heat dissipation performance, are particularly high. At present, most aluminum electrolytic capacitors on the market use liquid electrolyte inside, aluminum shell on the outside, and rubber sealing plug on the seal. The heat conduction area of ​​the aluminum shell is limited, and the product itself generates a large amount of heat or the heat dissipation is small. The heat generated at the time cannot be completely evacuated in time, and ...

AI Technical Summary

Problems solved by technology

At present, most aluminum electrolytic capacitors on the market use liquid electrolyte inside, aluminum shell on the outside, and rubber sealing plug on the seal. The heat conduction area of ​​the aluminum shell is limited, and the product itself generates a large amount of heat or the heat dissipation is small. The heat generated during the operation cannot be completely evacuated in time, and the residual heat accelerates the volatilization of the electrolyte inside the capacitor, which affects the service life of the capacitor and the ability of the product to withstand ripple current, and even causes the capacitor to fail

Traditional capacitors have the disadvantages of high heat generation, low heat dissipation performance, and the ability to withstand ripple currents

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