公开(公告)号：US20240191046A1

公开(公告)日：2024-06-13

申请号：US18583599

申请日：2024-02-21

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Daisuke KUBO ,  Hiroyuki ARIMA ,  Tomoyuki TASHIRO ,  Kazuhiro TAKATANI ,  Kenta CHASHIRO ,  Shumpei MATSUSHITA

IPC: C08J5/18 ,  C08J5/04 ,  H01G9/00 ,  H01G9/02

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.

公开(公告)号：US20180240600A1

公开(公告)日：2018-08-23

申请号：US15954179

申请日：2018-04-16

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Tatsuji AOYAMA ,  Tomoyuki TASHIRO ,  Junya KUSHIZAKI ,  Shunpei MATSUSHITA

IPC: H01G9/00 ,  H01G9/02 ,  H01G9/035 ,  H01G9/07 ,  H01G9/008 ,  H01G9/145 ,  H01G9/15

CPC classification number: H01G9/0032 ,  H01G9/0029 ,  H01G9/008 ,  H01G9/02 ,  H01G9/028 ,  H01G9/035 ,  H01G9/07 ,  H01G9/145 ,  H01G9/15 ,  H01L23/5227 ,  H01L27/08 ,  H01L28/10 ,  H01L28/40

Abstract: A method for producing an electrolytic capacitor includes: a first step of preparing a capacitor element that includes an anode body on which a dielectric layer is formed; a second step of impregnating the capacitor element with a first treatment solution containing a first solvent and a conductive polymer; a third step of impregnating, after the second step, the capacitor element with a second treatment solution containing a second solvent; and a fourth step of impregnating, after the third step, the capacitor element with an electrolyte solution containing a third solvent. Both the second solvent and the third solvent are an aprotic solvent.

公开(公告)号：US20250095923A1

公开(公告)日：2025-03-20

申请号：US18832547

申请日：2023-01-27

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuji AOYAMA ,  Shumpei MATSUSHITA ,  Tomoyuki TASHIRO

IPC: H01G9/028 ,  H01G9/00 ,  H01G9/035 ,  H01G9/15

Abstract: A disclosed electrolytic capacitor includes a stacked body and a liquid component with which the stacked body is impregnated. The stacked body includes an anode foil having a dielectric layer formed on a surface thereof, a cathode foil, a separator, and conductive polymer layers. The conductive polymer layers include a first conductive polymer layer formed on the dielectric layer, a second conductive polymer layer formed on the cathode foil, and a third conductive polymer layer formed on the separator. The first conductive polymer layer and the third conductive polymer layer are in contact with each other at a first interface, and the second conductive polymer layer and the third conductive polymer layer are in contact with each other at a second interface. When the amount of the liquid component contained in the stacked body has decreased, an electrical resistance between the first conductive polymer layer and the third conductive polymer layer and an electrical resistance between the second conductive polymer layer and the third conductive polymer layer increase.

公开(公告)号：US20180108490A1

公开(公告)日：2018-04-19

申请号：US15841072

申请日：2017-12-13

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Daisuke KUBO ,  Masayuki TAKAHASHI ,  Yukihiro SHIMASAKI ,  Tomoyuki TASHIRO ,  Tatsuji AOYAMA

IPC: H01G9/15 ,  H01G13/04 ,  H01G9/07 ,  H01G9/02 ,  H01G9/028 ,  H01G9/00 ,  H01G9/048

CPC classification number: H01G9/151 ,  H01G9/0029 ,  H01G9/02 ,  H01G9/028 ,  H01G9/035 ,  H01G9/048 ,  H01G9/07 ,  H01G13/04

Abstract: An electrical storage device includes an electrical storage element and an electrolytic solution. The electrical storage element is formed of an anode body, a cathode body facing the anode body, and a separator interposed between the anode body and the cathode body. The separator includes a separator substrate and a conductive polymer adhering to the separator substrate. The electrical storage element is impregnated with the electrolytic solution. The separator includes a first surface layer having a first surface facing the anode body and a second surface layer having a second surface facing the cathode body. The first surface layer includes a first region that is not provided with the conductive polymer, and the second surface layer includes a second region provided with the conductive polymer.

公开(公告)号：US20240312726A1

公开(公告)日：2024-09-19

申请号：US18546925

申请日：2022-02-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuji AOYAMA ,  Tomoyuki TASHIRO ,  Shumpei MATSUSHITA

IPC: H01G9/008 ,  H01G9/00 ,  H01G9/14

CPC classification number: H01G9/008 ,  H01G9/0029 ,  H01G9/14

Abstract: An electrolytic capacitor including a plurality of anode bodies and cathode bodies, a plurality of anode tabs connected with the plurality of anode bodies, and an anode lead member connected to the plurality of anode tabs. The plurality of anode tabs include a first anode tab group and a second anode tab group. Each of the first and second anode tab group has a through hole Ha. The anode lead member includes a metal plate-shaped anode connection part, the anode connection part being connected to the first anode tab group and the second anode tab group. Each of the first and second node tab group is connected to the anode connection part using a first fixing structure. The first fixing structure is formed by a portion of the anode connection part extending through the through hole Ha and spreading out to form a crimping structure on the other side.

公开(公告)号：US20240145177A1

公开(公告)日：2024-05-02

申请号：US18546916

申请日：2022-02-24

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuji AOYAMA ,  Tomoyuki TASHIRO ,  Shumpei MATSUSHITA

IPC: H01G9/00

CPC classification number: H01G9/0032

Abstract: The disclosed manufacturing method includes: a step (i) of preparing an anode substrate having a metal foil exposed at an end surface of the anode substrate; a step (ii) of connecting a plurality of anode lead members to the anode substrate and forming a second dielectric layer on the end surface; a step (iii) of forming a plurality of the anode bodies to which the anode lead members are connected by cutting the anode substrate at a predetermined length; a step (iv) of forming a laminate by laminating the anode body, a cathode body, and a separator; and a step (v) of impregnating the laminate with a conductive polymer and an electrolytic solution. Step (ii) includes: connecting the plurality of anode lead members to the anode substrate; and forming the second dielectric layer on the end surface by immersing the anode substrate in a chemical conversion liquid.

公开(公告)号：US20250022664A1

公开(公告)日：2025-01-16

申请号：US18712152

申请日：2022-11-29

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tatsuji AOYAMA ,  Shumpei MATSUSHITA ,  Tomoyuki TASHIRO

IPC: H01G9/055 ,  H01G9/00 ,  H01G9/15 ,  H01G9/145

Abstract: An electrode foil for an electrolytic capacitor includes a metal foil having a first region and a second region other than the first region, in which the second region is a region extending linearly along an edge portion of the metal foil, the thickness of the second region is smaller than the thickness of the first region, and steps are provided between the first region and the second region on both surfaces of the metal foil.

公开(公告)号：US20220162404A1

公开(公告)日：2022-05-26

申请号：US17427530

申请日：2020-01-29

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Daisuke KUBO ,  Hiroyuki ARIMA ,  Tomoyuki TASHIRO ,  Kazuhiro TAKATANI ,  Kenta CHASHIRO ,  Shumpei MATSUSHITA

IPC: C08J5/18 ,  H01G9/00 ,  H01G9/02 ,  C08J5/04

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.