公开(公告)号：US20220172901A1

公开(公告)日：2022-06-02

申请号：US17598734

申请日：2020-02-26

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Norihiko OGATA ,  Yuma YANO ,  Kazuhide GOTOU ,  Yukiyasu SUGIHARA ,  Masayuki HOGIRI ,  Masahiro UEDA ,  Kazuhito ODANE

IPC: H01G9/012 ,  H01G9/15 ,  H01G9/028 ,  H01G9/00 ,  H01G9/052

Abstract: An electrolytic capacitor including a capacitor element that includes an anode body being porous, a dielectric layer formed on the surface of the anode body, and a solid electrolyte layer covering at least part of the dielectric layer. The anode body has a plurality of principal surfaces and a corner portion. The corner portion includes a plurality of side portions connecting between the principal surfaces, and one or more vertex portions connecting between the principal surfaces. A surface layer X of at least part of the corner portion is more compact in texture than a surface layer Y of the principal surface adjacent to the surface layer X.

公开(公告)号：US20230411086A1

公开(公告)日：2023-12-21

申请号：US18365715

申请日：2023-08-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Yukiyasu SUGIHARA ,  Norihiko OGATA ,  Kazuhide GOTOU ,  Yuma YANO ,  Yuki UEDA ,  Takeshi MINAMIURA ,  Masayuki HOGIRI

IPC: H01G9/052 ,  H01G9/00

CPC classification number: H01G9/0525 ,  H01G9/0032 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body having a porous structure, an anode lead partially embedded in the anode body, a dielectric layer formed on a surface of the anode body, and a cathode part that covers at least part of the dielectric layer. The anode body has a first region in which first particles sintered together and a second region in which second particles sintered together. The average particle diameter D1 of the first particles is smaller than the average particle diameter D2 of the second particles. The volume-based pore diameter distribution of the anode body with the dielectric layer has a first peak in a range of less than or equal to 0.5 μm in pore diameter, and a second peak in a range of more than 0.5 μm in pore diameter.

公开(公告)号：US20240153713A1

公开(公告)日：2024-05-09

申请号：US18549507

申请日：2022-03-10

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Takeshi MINAMIURA ,  Masayuki HOGIRI ,  Norihiko OGATA ,  Kazuhide GOTOU ,  Yuma YANO ,  Yukiyasu SUGIHARA

IPC: H01G9/052 ,  H01G9/15

CPC classification number: H01G9/052 ,  H01G9/15

Abstract: An electrolytic capacitor including a capacitor element that includes an anode body being porous and including an anode substrate body and a dielectric layer formed on a surface of the anode substrate body, and a solid electrolyte layer covering at least part of the dielectric layer. The anode body has a plurality of principal faces. A surface of the anode body has a first region and a second region different from the first region, and the first region does not include a corner portion where a plurality of the principal faces meet. A surface roughness in the first region is greater than a surface roughness in the second region.