US 12,476,053 B2
Electrolytic capacitor and manufacturing method thereof
Shinya Suzuki, Kyoto (JP); and Masahiro Kajimura, Osaka (JP)
Assigned to PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed by PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD., Osaka (JP)
Filed on Jul. 8, 2024, as Appl. No. 18/766,319.
Application 18/299,441 is a division of application No. 16/651,899, granted, now 11,670,460, issued on Jun. 6, 2023, previously published as PCT/JP2018/036022, filed on Sep. 27, 2018.
Application 18/766,319 is a continuation of application No. 18/299,441, filed on Apr. 12, 2023, granted, now 12,062,502.
Claims priority of application No. 2017-189037 (JP), filed on Sep. 28, 2017; application No. 2017-189038 (JP), filed on Sep. 28, 2017; and application No. 2017-189039 (JP), filed on Sep. 28, 2017.
Prior Publication US 2024/0363290 A1, Oct. 31, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H01G 9/048 (2006.01); H01G 9/012 (2006.01); H01G 9/07 (2006.01); H01G 9/08 (2006.01)
CPC H01G 9/048 (2013.01) [H01G 9/012 (2013.01); H01G 9/07 (2013.01); H01G 9/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An electrolytic capacitor comprising a stack of a plurality of capacitor elements,
the stack including:
at least one of the capacitor elements which includes:
an anode foil having a first part including a first end and a second part including a second end,
a dielectric layer formed on at least a surface of the second part,
a cathode part covering at least part of the dielectric layer, and
an electrically insulating member;
a package body enclosing the capacitor element,
an anode-side external electrode electrically connected to the anode foil, and
a cathode-side external electrode electrically connected to the cathode part,
wherein the anode foil has a porous portion,
the electrically insulating member contacts the porous portion in the first part,
the electrically insulating member is longer in a length direction of the anode foil than in a stacked direction of the stack,
the stack includes a spacer disposed between the anode foils adjacent to each other, on a side of the first part,
the spacer comprises an electrically conductive material,
the spacer is apart from the cathode part by the part of the package body and the insulating member,
the insulating member has an end A on a side of the first end and an end B on a side of the second part, and
an end face of the end A is in contact with the spacer.