A kind of ultra-thin square solid-state capacitor and its manufacturing method

Abstract

An ultrathin square solid capacitor is characterized by comprising a square steel shell with one opened end, a flat core cladding and a fixing filler; the flat core cladding is fixed in the square steel shell by the fixing filler; the steel shell is 2-5mm thick; the core cladding comprises an anode foil, a cathode foil, electrolytic paper located between the anode foil and the cathode foil, an anode lead and a cathode lead; the electrolytic paper is immersed with a monomer and an antioxidant which generate a conducting polymer on the electrolytic paper; the monomer is one or more of EDOT and a derivative thereof, pyrrole and aniline and the anode lead and the cathode lead are fixedly connected onto the anode foil and the cathode foil and extend out of the square steel shell. The square solid capacitor is small in thickness and larger in length, thus ensuring volume, capacitance and density requirements of the solid capacitor, meeting the requirement of placing the solid capacitor in a flat space and increasing a spatial use ratio and radiating performance of the capacitor.

Description

technical field [0001] The invention relates to a capacitor, in particular to an ultra-thin square solid capacitor and a manufacturing method 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 be seen on the market are designed with a cylindrical...

AI Technical Summary

Problems solved by technology

[0006] In addition, the working electrolyte of traditional electrolytic capacitors is liquid or "pasty". This type of capacitor has many fatal weaknesses, such as the working electrolyte will gradually dry up and fail over time, the temperature-frequency characteristics are relatively poor, and the ESR is large, etc.

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