A square liquid aluminum electrolytic capacitor with flexible packaging and its manufacturing process

Abstract

The invention discloses a square liquid-state aluminum electrolytic capacitor with flexible package, comprising a flexible shell and a flat elliptoid capacitor core bag, wherein the capacitor core bag is sealed in the flexible shell and comprises an anode foil, a cathode foil, electrolytic paper, a positive lead and a negative lead; the electrolytic paper is placed between the anode foil and the cathode foil; the positive lead and the negative lead are respectively connected to the anode foil and the cathode foil in a riveting way; the aluminum stems of the positive lead and the negative lead are in sealed connection with the flexible shell through PP glue (mainly comprising ethyl-alpha-cyanoacrylate). The square liquid-state aluminum electrolytic capacitor with flexible package can bear bending to some extent in the process of installation and use since the shell is of flexible package; moreover, due to use of the flexible package design, the rubber plug design of the traditional aluminum electrolytic capacitor is omitted and therefore the cost is saved. With adoption of the square liquid-state aluminum electrolytic capacitor, the conductivity of a conducting polymer is high, the equivalent series resistance and impedance of the capacitor are relatively low and loss is low; the ripple resistance is strong.

Description

technical field [0001] The invention relates to a liquid aluminum electrolytic capacitor, in particular to a soft-packed square liquid aluminum electrolytic capacitor and a manufacturing process thereof. Background technique [0002] Aluminum electrolytic capacitors are one of the most important basic electronic components in electronic engineering. It is not only widely used in LED, power supply and other electronic circuits as filtering, coupling and bypass, but also plays a special role in special circuits such as correction circuits, pump power circuits and AC motor starting circuits. "2013~2017 China Aluminum Electrolytic Capacitor Industry Development Prospects and Investment Forecast Analysis Report" data shows that the global output value in 2010 was 5.2 billion US dollars, and the average growth rate in the past 7 years was 4% to 5%. The market potential of aluminum electrolytic capacitors is huge. [0003] At present, the aluminum electrolytic capacitors that can ...

AI Technical Summary

Problems solved by technology

However, in some applications, in order to reduce the volume of the integrated circuit, only a flat space can be reserved for soldering capacitors. The space around the cylindrical aluminum electrolytic capacitor cannot be effectively utilized, and the volume utilization rate in the flat space is low.

On the other hand, under the condition of high ripple current, heat is easy to accumulate inside the capacitor. If the heat cannot be dissipated effectively, it will affect the performance of the product.

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