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：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：US20230137973A1

公开(公告)日：2023-05-04

申请号：US18046913

申请日：2022-10-15

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： YUJI OTSUKA ,  MASAHIRO ABURAYA ,  TATSUJI AOYAMA ,  TOMOYUKI TASHIRO

IPC: H01G9/048 ,  H01G9/00

Abstract: An electrolytic capacitor includes an electrode foil and a lead member connected to the electrode foil. The electrode foil has a first principal surface and a second principal surface opposite to the first principal surface. The electrode foil and the lead member are connected by a caulking part in an overlapping part in which the first principal surface of the electrode foil and the lead member overlap each other. The caulking part has a through-hole penetrating the electrode foil and the lead member. The electrode foil in the caulking part includes a first folded part that is folded back at a peripheral edge portion of the through-hole to be disposed on the second principal surface. The lead member in the caulking part includes (i) a penetrating part that penetrates the electrode foil and (ii) a second folded part that is folded back at an end portion of the penetrating part to be disposed on the second principal surface. The penetrating part includes an inner wall of the through-hole. The second folded part covers the first folded part.