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公开(公告)号：US12293880B2
公开(公告)日：2025-05-06
申请号：US18045654
申请日：2022-10-11
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component and a base component. A mass of the acid component in the solute is greater than a mass of the base component in the solute. The acid component contains a first aromatic compound having a hydroxyl group.
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公开(公告)号：US12243693B2
公开(公告)日：2025-03-04
申请号：US17810619
申请日：2022-07-04
Inventor： Kazuyo Saito , Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. 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 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.
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公开(公告)号：US12112899B2
公开(公告)日：2024-10-08
申请号：US18208788
申请日：2023-06-12
Inventor： Kazuyo Saito , Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes a capacitor element and electrolytic solution. The capacitor element includes an anode body with an oxide film, and a solid electrolyte contacting the oxide film. The electrolytic solution contains a solvent and a solute. The solvent contains at least one selected from the group consisting of a lactone compound, a glycol compound, and a sulfone compound. The solute includes a first acid component and a base component. The first acid component includes at least one of a benzenedicarboxylic acid and a derivative of the benzenedicarboxylic acid. The base component includes at least one of an amine and an amidine. A concentration of the solute in the electrolytic solution ranges from 15% by mass to 40% by mass, inclusive. A ratio (V/Vw) of a formation voltage V of the oxide film to a rated voltage Vw of the electrolytic capacitor is less than or equal to 1.7.
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公开(公告)号：US11776762B2
公开(公告)日：2023-10-03
申请号：US17953544
申请日：2022-09-27
Inventor： Miyoko Masuda , Yuichiro Tsubaki , Tatsuji Aoyama , Daisuke Kubo
Abstract: Disclosed is an electrolytic capacitor including: a capacitor element including a pair of electrodes; an electrolyte interposed between the pair of electrodes; a pair of leads electrically connected to the pair of electrodes, respectively; a case in which the capacitor element and the electrolyte are accommodated, and that has an opening; a sealing member that seals the opening, and has a pair of insertion holes for leading out the leads; an insulating plate having a pair of through holes for leading out the leads; and a resin member filled between the sealing member and the insulating plate, wherein the insulating plate has a resin bonding surface that abuts against the resin member, and a mounting surface opposed to the resin bonding surface, and includes at least one protrusion or recess on the resin bonding surface.
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公开(公告)号：US11756739B2
公开(公告)日：2023-09-12
申请号：US17688359
申请日：2022-03-07
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama , Kazuyo Saito , Yuji Otsuka
Abstract: An electrolytic capacitor includes a capacitor element and an electrolytic solution. The capacitor element includes: an anode body including a dielectric layer; a cathode body; and a solid electrolyte in contact with the dielectric layer. The electrolytic solution includes a solvent, a solute, and a polymer component. The solvent includes an ethylene glycol compound. The polymer component includes polyalkylene glycol. The polyalkylene glycol includes at least one of (i) a mixture of polyoxyethylene and polyoxypropylene and (ii) an oxyethylene-oxypropylene copolymer. In the polyalkylene glycol, a molar ratio m/n of oxyethylene units to oxypropylene units is greater than 1.
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Patent Agency Ranking
公开(公告)号：US11749464B2
公开(公告)日：2023-09-05
申请号：US17262929
申请日：2019-07-26
Inventor： Yuichiro Tsubaki , Daisuke Kubo , Tatsuji Aoyama
Abstract: An electrolytic capacitor according to the present disclosure includes an anode body, a cathode body, a solid electrolyte, and a liquid component. The anode body has a surface provided with a dielectric layer. The solid electrolyte is in contact with the dielectric layer, is disposed between the anode body and the cathode body and contains conductive polymer. The liquid component is in contact with the dielectric layer and the solid electrolyte and contains a solvent and an acid component. The acid component contains a first polymer acid component including a sulfonic acid group or a carboxylic acid group.
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公开(公告)号：US11482383B2
公开(公告)日：2022-10-25
申请号：US16643455
申请日：2018-08-31
Inventor： Miyoko Masuda , Yuichiro Tsubaki , Tatsuji Aoyama , Daisuke Kubo
Abstract: Disclosed is an electrolytic capacitor including: a capacitor element including a pair of electrodes; an electrolyte interposed between the pair of electrodes, a pair of leads electrically connected to the pair of electrodes, respectively; a case in which the capacitor element and the electrolyte are accommodated, and that has an opening, a sealing member that seals the opening, and has a pair of insertion holes for leading out the leads; an insulating plate having a pair of through holes for leading out the leads; and a resin member filled between the sealing member and the insulating plate, wherein the insulating plate has a resin bonding surface that abuts against the resin member, and a mounting surface opposed to the resin bonding surface, and includes at least one protrusion or recess on the resin bonding surface.
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公开(公告)号：US11443901B2
公开(公告)日：2022-09-13
申请号：US17080932
申请日：2020-10-27
Inventor： Yuichiro Tsubaki , Kazuyo Saito , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer disposed on a surface of the anode body, a solid electrolyte layer that is in contact with the dielectric layer, and an electrolytic solution. The solid electrolyte layer includes a conductive polymer. The electrolytic solution contains a first base component, a first acid component, and a second acid component. The first base component includes an amidine compound. The first acid component includes a composite compound of an inorganic acid and an organic acid. The second acid component includes at least one selected from a group consisting of boric acid, phosphoric acid, phosphorous acid, hypophosphorous acid, and phosphonic acid.
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公开(公告)号：US11087928B2
公开(公告)日：2021-08-10
申请号：US16359482
申请日：2019-03-20
Inventor： Yoshiaki Ishimaru , Kazunari Imamoto , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body including a dielectric layer, a cathode body, and a conductive polymer layer and a liquid component that are disposed between the anode body and the cathode body. The cathode body includes a base material part having an outer surface that is roughened surface and has a pore opened at the outer surface, and an inorganic conductive layer covering at least a part of the outer surface. The base material part includes a first coating layer disposed along at least a part of inner wall of the pore. The first coating layer contains phosphorus.
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公开(公告)号：US10937601B2
公开(公告)日：2021-03-02
申请号：US16703080
申请日：2019-12-04
Inventor： Yuichiro Tsubaki , Tatsuji Aoyama
Abstract: An electrolytic capacitor includes an anode body having a dielectric layer; a solid electrolyte layer in contact with the dielectric layer of the anode body; and an electrolytic solution. The electrolytic solution contains a solvent and a solute. The solvent contains a glycol compound. The solute contains an acid component. The acid component contains a first aromatic compound having a hydroxyl group. A proportion of the first aromatic compound in the acid component ranges from 30% by mass to 100% by mass, inclusive.
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