Electrolytic capacitor
AssigneePanasonic Intellectual Property Management Co., Ltd.
InventorsYuichiro Tsubaki, Kazuhiro Takatani, Mitsuhisa Yoshimura, Miyoko Masuda
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Abstract
An electrolytic capacitor includes a capacitor element, a liquid component, a case housing the capacitor element and the liquid component, and a sealing member sealing the case. the capacitor element includes a porous sintered body including a dielectric layer, a cathode foil facing at least a part of the porous sintered body, and a conductive polymer covering at least a part of a surface of the dielectric layer. The conductive polymer is in contact with the cathode foil. And a void in the capacitor element is impregnated with the liquid component.
Claims14
An electrolytic capacitor comprising:
- a capacitor element;
- a liquid component;
- a case housing the capacitor element and the liquid component;
- and
- a sealing member sealing the case, wherein:
- the capacitor element includes:
- a porous sintered body including a dielectric layer, the porous sintered body having a top surface, a bottom surface and an outer peripheral surface between the top surface and the bottom surface;
- a cathode foil facing the outer peripheral surface of the porous sintered body;
- a separator disposed between the cathode foil and the porous sintered body, the separator covering the outer peripheral surface of the porous sintered body;
- and
- a conductive polymer disposed in an inside of the porous sintered body and in the separator, the conductive polymer covering at least a part of a surface of the dielectric layer,
- the conductive polymer forms, in the separator, a conductive path electrically connecting the cathode foil and the dielectric layer disposed in the inside of the porous sintered body, and
- the capacitor element is impregnated with the liquid component.
Dependencies are inferred from the claim text.