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公开(公告)号：US12255026B2
公开(公告)日：2025-03-18
申请号：US17914234
申请日：2021-03-25
Inventor： Yuji Miyachi , Takayuki Matsumoto
Abstract: A disclosed electrolytic capacitor includes a capacitor element and a cathode lead terminal. The capacitor element includes an anode body and a cathode part. The cathode lead terminal includes a connection part that is connected to the cathode part via a conductive member. The connection part includes a plate-shaped part, and first and second side walls standing from the plate-shaped part. Grooves are formed in a surface of each of the plate-shaped part and the first and second side walls. The grooves include first grooves and second grooves that are formed so as to extend continuously from the plate-shaped part across the first and second side walls. The conductive member is disposed between one surface of the cathode part and the plate-shaped part, and between two side surfaces of the cathode part and the respective corresponding first and second side surfaces.
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公开(公告)号：US12125646B2
公开(公告)日：2024-10-22
申请号：US17799578
申请日：2021-02-22
Inventor： Kazuya Yamasaki , Shinji Kondou , Hitoshi Ishimoto , Yukihiro Shimasaki , Yuji Miyachi , Kohei Yamaguchi
CPC classification number: H01G9/0425 , H01G9/048 , H01G9/15
Abstract: A disclosed capacitor element includes: a first electrode; a dielectric layer covering at least a portion of the first electrode; and a second electrode covering at least a portion of the dielectric layer. The second electrode includes a solid electrolyte layer, a conductive carbon layer covering at least a portion of the solid electrolyte layer, and a metal paste layer covering at least a portion of the carbon layer. The carbon layer includes flake carbon particles and spherical carbon particles. A particle diameter of the spherical carbon particles is less than an average major diameter of the flake carbon particles, or greater than or equal to the average major diameter of the flake carbon particles.
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公开(公告)号：US12247149B2
公开(公告)日：2025-03-11
申请号：US17800848
申请日：2021-02-10
Inventor： Takashi Ohbayashi , Yoshihisa Nagasaki , Yuji Miyachi
Abstract: A conductive paste for an electrolytic capacitor used for connecting a cathode part and a cathode lead terminal of the electrolytic capacitor. The conductive paste includes a thermosetting resin, and conductive particles, and the conductive particles include flaky metal particles and acicular conductive particles. The content of the conductive particles in the conductive paste is, for example, 50 mass % or more and 70 mass % or less, and the mass ratio of the flaky metal particles to the total of the flaky metal particles and the acicular conductive particles is, for example, 60% or more and 80% or less.
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公开(公告)号：US12148576B2
公开(公告)日：2024-11-19
申请号：US17807886
申请日：2022-06-21
Inventor： Yuji Miyachi , Makoto Maruoka
Abstract: An electrolytic capacitor includes a capacitor element, a cathode lead terminal, and an exterior body. The cathode lead terminal includes a first cathode lead part facing a first main surface of the capacitor element, a second cathode lead part bent from the first cathode lead part, a third cathode lead part bent from the second cathode lead part, and a fourth cathode lead part bent from the first cathode lead part. The second cathode lead part extends in a direction along a surface intersecting with the first main surface. The third cathode lead part extends to be exposed from the exterior body. The fourth cathode lead part extends along a second main surface of the capacitor element. In the normal direction of the first main surface, a height h of the fourth cathode lead part is less than or equal to a height H from the first cathode lead part to a portion of the third cathode lead part that is not exposed from the exterior body.
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