公开(公告)号：US20200227208A1

公开(公告)日：2020-07-16

申请号：US16833951

申请日：2020-03-30

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  TATSUJI AOYAMA ,  KAZUYO SAITO ,  YUJI OTSUKA

IPC: H01G9/035 ,  H01G9/048 ,  H01G9/028

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.

公开(公告)号：US20190013152A1

公开(公告)日：2019-01-10

申请号：US16128442

申请日：2018-09-11

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TATSUJI AOYAMA ,  YUICHIRO TSUBAKI

IPC: H01G9/028 ,  H01G9/035 ,  H01G9/055 ,  H01G9/00

CPC classification number: H01G9/028 ,  H01G9/0032 ,  H01G9/0036 ,  H01G9/035 ,  H01G9/055

Abstract: An electrolytic capacitor includes an anode body with a dielectric layer; a solid electrolyte layer; and an electrolytic solution. The solid electrolyte layer includes a π-conjugated conductive polymer and an organic sulfonic acid. The electrolytic solution includes a solvent and an acid component, and the acid component includes a sulfuric acid. A concentration of the sulfuric acid in the electrolytic solution ranges from 2.9 ppm to 532 ppm, inclusive.

公开(公告)号：US20240177941A1

公开(公告)日：2024-05-30

申请号：US18502118

申请日：2023-11-06

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  KENTA CHASHIRO ,  HIROYUKI ARIMA

IPC: H01G9/035 ,  C08K5/053 ,  C08K5/1539 ,  C08K5/45 ,  H01G9/025 ,  H01G9/145 ,  H01G9/15

CPC classification number: H01G9/035 ,  C08K5/053 ,  C08K5/1539 ,  C08K5/45 ,  H01G9/025 ,  H01G9/145 ,  H01G9/15

Abstract: An electrolytic capacitor includes a capacitor element and a liquid component. The capacitor element includes an anode body including a dielectric layer on a surface of the anode body, and a solid electrolyte layer covering at least a part of a surface of the dielectric layer. The solid electrolyte layer contains a conductive polymer component, and the liquid component contains a first polymer component. The first polymer component includes a carbon chain whose main chain does not contain a heteroatom at a position other than a terminal of the main chain. Units constituting the first polymer component include at least one first unit selected from the group consisting of a (meth)acrylic acid-based unit having a carboxy group and a vinyl alcohol-based unit having a hydroxy group. A proportion of the at least one first unit in an entirety of the units constituting the first polymer component is more than 50 mass %.

公开(公告)号：US20210043390A1

公开(公告)日：2021-02-11

申请号：US17080932

申请日：2020-10-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  KAZUYO SAITO ,  TATSUJI AOYAMA

IPC: H01G9/028 ,  H01G9/032 ,  H01G9/15 ,  H01G9/07

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.

公开(公告)号：US20220399170A1

公开(公告)日：2022-12-15

申请号：US17892958

申请日：2022-08-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  Kazuyo Saito ,  Tatsuji Aoyama

IPC: H01G9/035 ,  H01G9/145 ,  H01G9/15

Abstract: An electrolytic capacitor includes an anode body, a cathode body, and a conductive polymer and a liquid component that are disposed between the anode body and the cathode body. The liquid component contains an acid component, a base component, and an aromatic additive. The acid component includes at least one of an aromatic carboxylic acid and an aromatic carboxylic acid derivative. The at least one of the aromatic carboxylic acid and the aromatic carboxylic acid derivative includes at least two carboxy groups and at least one aromatic ring. A content proportion of the base component in the liquid component is more than or equal to 1% by mass. The aromatic additive includes an electron withdrawing group and an electron donating group. A content ratio of the aromatic additive contained in the liquid component is more than or equal to 50 parts by mass with respect to 100 parts by mass of the conductive polymer.

公开(公告)号：US20220359127A1

公开(公告)日：2022-11-10

申请号：US17813940

申请日：2022-07-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： TATSUJI AOYAMA ,  YUJI OTSUKA ,  TOMOYUKI TASHIRO ,  KENTA CHASHIRO ,  YUICHIRO TSUBAKI

IPC: H01G9/00 ,  H01G9/025 ,  H01G9/035

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：US20220359125A1

公开(公告)日：2022-11-10

申请号：US17815259

申请日：2022-07-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  KAZUHIRO TAKATANI ,  MIYOKO MASUDA ,  KENTA CHASHIRO ,  SHUMPEI MATSUSHITA

IPC: H01G9/008 ,  H01G9/10 ,  H01G9/055 ,  H01G13/04

Abstract: A method for manufacturing an electrolytic capacitor includes a first connection step, a second connection step, a first insertion step, a housing step, and a sealing step. In the first connection step, a first internal lead having a foil shape is connected to a first electrode foil. In the second connection step, after the first connection step, a first external lead having a rod shape is connected to the first internal lead to obtain the first electrode. In the first insertion step, the first external lead is inserted into an insertion port of a sealing plate after the second connection step. In the housing step, the first electrode is housed in a container after the first insertion step. In the sealing step, an opening of the container is closed with the sealing plate after the housing step.

公开(公告)号：US20180090279A1

公开(公告)日：2018-03-29

申请号：US15702643

申请日：2017-09-12

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  TATSUJI AOYAMA

IPC: H01G9/035 ,  H01G9/145 ,  H01G9/00

CPC classification number: H01G9/035 ,  H01G9/0029 ,  H01G9/145

Abstract: An electrolytic capacitor includes an anode body having a dielectric layer on a surface of the anode body, a cathode body, and an electrolytic solution interposed between the anode body and the cathode body. The electrolytic solution contains a first ester compound and a second ester compound. The first ester compound is a condensate of boric acid and a sugar alcohol. The second ester compound contains at least one condensate selected from the group consisting of a condensate of boric acid and a monool compound and a condensate of boric acid and a polyol compound excluding a sugar alcohol.

公开(公告)号：US20220351913A1

公开(公告)日：2022-11-03

申请号：US17810619

申请日：2022-07-04

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： KAZUYO SAITO ,  YUICHIRO TSUBAKI ,  TATSUJI AOYAMA

IPC: H01G9/035

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.

公开(公告)号：US20180277312A1

公开(公告)日：2018-09-27

申请号：US15986455

申请日：2018-05-22

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUICHIRO TSUBAKI ,  TATSUJI AOYAMA

IPC: H01G11/04 ,  H01G11/56 ,  H01G11/60 ,  H01G11/80 ,  H01G11/86

CPC classification number: H01G11/04 ,  H01G9/028 ,  H01G9/035 ,  H01G9/10 ,  H01G9/145 ,  H01G9/151 ,  H01G11/56 ,  H01G11/60 ,  H01G11/80 ,  H01G11/86

Abstract: An electrolytic capacitor includes a capacitor element, a liquid component, an outer case, and a sealing body. The capacitor element includes an anode body having a dielectric layer, and a solid electrolyte layer in contact with the dielectric layer. The liquid component is in contact with the solid electrolyte layer. The outer case houses the capacitor element and the liquid component. The sealing body seals an opening of the outer case. The liquid component contains a first component, which is an aliphatic polyol compound having two or more hydroxy groups per molecule. The aliphatic polyol compound includes at least one of a compound having a C3 carbon chain in a main chain and a compound having no C3 carbon chain but having one to four ether oxygen atoms in a main chain. The sealing body includes a polymer having no double bond in a main chain.