US 12,243,693 B2
Electrolytic capacitor, method for manufacturing same, and electrolytic capacitor module
Kazuyo Saito, Osaka (JP); Yuichiro Tsubaki, Kyoto (JP); and Tatsuji Aoyama, 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. 4, 2022, as Appl. No. 17/810,619.
Application 17/810,619 is a continuation of application No. PCT/JP2021/001954, filed on Jan. 21, 2021.
Claims priority of application No. 2020-010386 (JP), filed on Jan. 24, 2020.
Prior Publication US 2022/0351913 A1, Nov. 3, 2022
Int. Cl. H01G 9/035 (2006.01); H01G 9/10 (2006.01); H01G 9/145 (2006.01); H01G 9/00 (2006.01)
CPC H01G 9/035 (2013.01) [H01G 9/10 (2013.01); H01G 9/145 (2013.01); H01G 9/0029 (2013.01)] 13 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising:
a capacitor element; and
a liquid component,
wherein:
the capacitor element includes an anode body that includes a dielectric layer on a surface of the anode body, and a conductive polymer that covers a part of the dielectric layer,
the conductive polymer is impregnated with the liquid component,
the liquid component includes a sugar alcohol component and a polyalkylene glycol component,
the sugar alcohol component contains at least one selected from the group consisting of a sugar alcohol having four or more hydroxy groups and a derivative of the sugar alcohol,
a content proportion of the sugar alcohol component in the liquid component ranges from 5 mass % to 30 mass %, inclusive,
a content proportion of the polyalkylene glycol component in the liquid component ranges from 50 mass % to 95 mass %, inclusive, and
in the liquid component, a ratio of the content proportion of the sugar alcohol component to the content proportion of the polyalkylene glycol component is more than or equal to 0.25 and less than 0.6.