Electrolytic capacitor and method for producing electrolytic capacitor
AssigneeNippon Chemi-Con Corporation
InventorsKouta Fukushima, Keisuke Tanabe
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Abstract
An electrolytic capacitor with improved connectivity between a cathode body including a carbon layer and a lead terminal, and a production method thereof are provided. The electrolytic capacitor 1 includes an anode body 2 having a dielectric oxide film 5 on a surface thereof, a cathode body 3 having a cathode foil 31 and a carbon layer 32 formed on the cathode foil 31, electrolytic solution 6 interposed between the anode body 2 and the cathode body 3, and a lead terminal 7 connected to each of the anode body 2 and the cathode body 3 by cold pressure welding. A maximum static friction coefficient of a surface of the carbon layer of the cathode body is 0.6 or more.
Claims12
An electrolytic capacitor comprising:
- an anode body having a dielectric layer on a surface thereof;
- a cathode body having a cathode foil and a carbon layer formed by pressing on the cathode foil;
- an electrolyte interposed between the anode body and the cathode body;
- and
- a lead terminal connected to the anode body and the cathode body by cold pressure welding,
- wherein a maximum static friction coefficient of a surface of the carbon layer of the cathode body is 0.6 or more.
A production method of an electrolytic capacitor in which an anode body having a dielectric layer on a surface thereof and a cathode body face each other via an electrolyte, the method comprising:
- a cathode body production process of forming a carbon layer on a cathode foil and pressing the carbon body having the cathode foil and the carbon layer, and
- a cold pressure welding process of connecting the cathode body having the carbon layer formed thereon to a lead terminal by cold pressure welding, wherein a maximum static friction coefficient of a surface of the carbon layer being 0.6 or more.
Dependencies are inferred from the claim text.