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公开(公告)号：US12266481B2
公开(公告)日：2025-04-01
申请号：US17813940
申请日：2022-07-21
Inventor： Tatsuji Aoyama , Yuji Otsuka , Tomoyuki Tashiro , Kenta Chashiro , Yuichiro Tsubaki
Abstract: A method for producing an electrolytic capacitor includes: preparing an anode foil, a cathode foil, and a fibrous structure, the anode foil having a porous portion including a dielectric layer; preparing a conductive polymer-containing liquid, the conductive polymer-containing liquid containing a conductive polymer component and a first solvent;
forming a separator by removing at least a part of the first solvent after applying the conductive polymer-containing liquid to the fibrous structure; forming a capacitor element from the anode foil, the separator, and the cathode foil; and impregnating the capacitor element with an electrolytic solution. An electrical conductivity of the electrolytic solution at 30° C. is 3.0 mS/cm or more.-
公开(公告)号：US11945923B2
公开(公告)日：2024-04-02
申请号：US17427530
申请日：2020-01-29
Inventor： Daisuke Kubo , Hiroyuki Arima , Tomoyuki Tashiro , Kazuhiro Takatani , Kenta Chashiro , Shumpei Matsushita
CPC classification number: C08J5/18 , C08J5/045 , C08J5/046 , H01G9/0032 , H01G9/02 , C08J2365/00 , C08J2401/02 , C08J2433/26 , C08J2467/02 , C08J2477/00
Abstract: Disclosed is a method for producing an electrolytic capacitor, the method including the steps of preparing an anode foil that includes a dielectric layer, a cathode foil, and a fiber structure; preparing a conductive polymer dispersion liquid that contains a conductive polymer component and a dispersion medium; producing a separator by applying the conductive polymer dispersion liquid to the fiber structure and then removing at least a portion of the dispersion medium; and producing a capacitor element by sequentially stacking the anode foil, the separator, and the cathode foil. The dispersion medium contains water. The fiber structure contains a synthetic fiber in an amount of 50 mass % or more. The fiber structure has a density of 0.2 g/cm3 or more and less than 0.45 g/cm3.
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公开(公告)号：US12176157B2
公开(公告)日：2024-12-24
申请号：US17427534
申请日：2020-01-29
Inventor： Daisuke Kubo , Shumpei Matsushita , Kenta Chashiro , Hiroyuki Arima
Abstract: A method for producing an electrolytic capacitor, the method including steps of: preparing an electrode foil; preparing a first conductive polymer dispersion containing a first conductive polymer component and a first dispersion medium; forming a first conductive polymer layer containing the first conductive polymer component, by applying the first conductive polymer dispersion to a surface of the electrode foil by a coating method, and then at least partially removing the first dispersion medium; and fabricating a capacitor element, using the electrode foil having the first conductive polymer layer.
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公开(公告)号：US11908633B2
公开(公告)日：2024-02-20
申请号：US17540762
申请日：2021-12-02
Inventor： Shumpei Matsushita , Tomoyuki Tashiro , Kenta Chashiro
CPC classification number: H01G9/048 , H01G9/0032 , H01G9/08 , H01G9/145 , H01G9/008
Abstract: An electrolytic capacitor includes a capacitor element, a first current collector, and a case. The capacitor element includes 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 face each other. The first current collector is connected to the first electrode foil. The case houses the capacitor element and the first current collector. 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 is 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.
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