US 12,112,900 B2
Electrolytic capacitor
Yuichiro Tsubaki, Kyoto (JP); Kazuhiro Takatani, Hyogo (JP); Mitsuhisa Yoshimura, Osaka (JP); and Miyoko Masuda, Kyoto (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Jul. 7, 2022, as Appl. No. 17/811,265.
Application 17/811,265 is a continuation of application No. PCT/JP2021/003300, filed on Jan. 29, 2021.
Claims priority of application No. 2020-014233 (JP), filed on Jan. 30, 2020.
Prior Publication US 2022/0344105 A1, Oct. 27, 2022
Int. Cl. H01G 9/15 (2006.01); H01G 9/052 (2006.01); H01G 9/10 (2006.01)
CPC H01G 9/15 (2013.01) [H01G 9/052 (2013.01); H01G 9/10 (2013.01)] 14 Claims
OG exemplary drawing
 
1. 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.