US 11,908,633 B2
Electrolytic capacitor and method for manufacturing same
Shumpei Matsushita, Yamaguchi (JP); Tomoyuki Tashiro, Yamaguchi (JP); and Kenta Chashiro, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Dec. 2, 2021, as Appl. No. 17/540,762.
Application 17/540,762 is a continuation of application No. PCT/JP2020/024751, filed on Jun. 24, 2020.
Claims priority of application No. 2019-122188 (JP), filed on Jun. 28, 2019.
Prior Publication US 2022/0093342 A1, Mar. 24, 2022
Int. Cl. H01G 9/048 (2006.01); H01G 9/00 (2006.01); H01G 9/08 (2006.01); H01G 9/145 (2006.01); H01G 9/008 (2006.01)
CPC H01G 9/048 (2013.01) [H01G 9/0032 (2013.01); H01G 9/08 (2013.01); H01G 9/145 (2013.01); H01G 9/008 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
a capacitor element including:
a wound body in which a first electrode foil and a second electrode foil are wound, the first electrode foil and the second electrode foil facing each other;
a first lead terminal connected to the first electrode foil; and
a second lead terminal connected to the second electrode foil;
a first current collector connected to the first electrode foil; and
a case that houses the capacitor element and the first current collector, wherein:
the first electrode foil includes a first facing portion that faces the second electrode foil and a first non-facing portion that does not face the second electrode foil, the first non-facing portion being located at a first end portion in a winding axis of the wound body,
the first current collector is disposed in a vicinity of the first end portion of the wound body to be connected to the first non-facing portion of the first electrode foil, and
the first current collector includes an opening, and the second lead terminal is inserted in the opening.