US 12,362,102 B2
Electrolytic capacitor
Takayuki Matsumoto, Saga (JP); Nobuhiro Tanigaki, Saga (JP); and Nobuyuki Yamaguchi, Saga (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Appl. No. 18/254,874
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
PCT Filed Dec. 10, 2021, PCT No. PCT/JP2021/045457
§ 371(c)(1), (2) Date May 29, 2023,
PCT Pub. No. WO2022/138223, PCT Pub. Date Jun. 30, 2022.
Claims priority of application No. 2020-217859 (JP), filed on Dec. 25, 2020; and application No. 2020-217860 (JP), filed on Dec. 25, 2020.
Prior Publication US 2024/0029962 A1, Jan. 25, 2024
Int. Cl. H01G 9/012 (2006.01); H01G 9/10 (2006.01); H01G 9/15 (2006.01)
CPC H01G 9/012 (2013.01) [H01G 9/10 (2013.01); H01G 9/15 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An electrolytic capacitor having a bottom surface and an upper surface opposite to the bottom surface, the electrolytic capacitor comprising:
a capacitor element including an anode lead;
an anode lead terminal and a cathode lead terminal each electrically connected to the capacitor element; and
outer packaging resin disposed around the capacitor element, wherein:
at least one of the anode lead terminal or the cathode lead terminal is constituted by a metal sheet and includes a terminal portion and two anchor portions, the terminal portion being partially exposed from the bottom surface, the two anchor portions each extending from the terminal portion toward an inside of the outer packaging resin,
the terminal portion has a principal surface and an end side, the principal surface being exposed from the bottom surface, the end side being along a longitudinal direction of the anode lead,
each of the two anchor portions includes an upright portion and an extension portion, the upright portion rising from the end side of the terminal portion toward the upper surface, the extension portion bending to extend from an upper end of the upright portion,
the upright portion has an exposed region exposed from the bottom surface in a vicinity of a boundary with the end side, and
an entire surface of the extension portion is in direct contact with the outer packaging resin.