Patents by Inventor Oose Okutani

Oose Okutani has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 12119517
    Abstract: The purpose of the present disclosure is to provide a secondary battery in which a current interruption function of an electrode tap can be enhanced during an external short circuit, and a temperature rise in the battery can be effectively suppressed. A secondary battery according to one embodiment of the present disclosure is provided with: an electrode assembly having a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode; a sealing assembly constituting a positive terminal; a case body constituting a negative terminal; a positive electrode tap connecting the positive electrode and the sealing assembly; and a negative electrode tap connecting the negative electrode and the case body, wherein the positive electrode has a fuse part which has a relatively small cross-sectional area in the positive electrode, and the fuse part of the positive electrode is metallurgically bonded to the sealing assembly.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: October 15, 2024
    Assignee: PANASONIC ENERGY CO., LTD.
    Inventors: Norie Mantoku, Oose Okutani, Kyosuke Miyata
  • Publication number: 20240322406
    Abstract: A cylindrical battery exemplifying one embodiment comprises an electrode assembly, a bottomed cylindrical external can that accommodates the electrode assembly, a sealing assembly that blocks an opening of the external can, a gasket that is interposed between the external can and the sealing assembly, and an external terminal plate that is joined to the outer surface of the external can. The external terminal plate is a metal plate having a thick portion and a thin portion, and the thin portion is joined to an open edge of the external can.
    Type: Application
    Filed: June 24, 2022
    Publication date: September 26, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shin Haraguchi, Takumi Kusano, Oose Okutani
  • Publication number: 20240313305
    Abstract: A cylindrical battery comprises an electrode body in which a positive electrode and a negative electrode are wound with a separator therebetween, a bottomed cylindrical external can which accommodates the electrode body, and a sealing body which seals an opening of the external can. A bottom part of the external can has a reverse part which has a raised shape such that the reverse part protrudes toward the electrode body in the axial direction and which reverses when the pressure inside the battery reaches a first pressure. The sealing body has a sealing plate which releases gas that is inside the battery by breaking when the pressure inside the battery reaches a second pressure that is higher than the first pressure. The sealing plate functions as a safety valve.
    Type: Application
    Filed: February 9, 2022
    Publication date: September 19, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shuhei Daira, Oose Okutani
  • Patent number: 12095074
    Abstract: A nonaqueous electrolyte secondary battery which includes a metal foil collector of one of a positive electrode plate and a negative electrode plate which is exposed at at least part of the outermost circumferential surface of the electrode group in a rolling direction, and the collector is in contact with the inner surface of a case main body. When a region of the inner surface of the case main body from the opening-portion-side edge to the position in contact with the bottom-portion-side edge of the gasket is denoted as a first region S1 and a region of the inner surface of the case main body opposing the outermost circumferential surface of the electrode group is denoted as a second region S2, the arithmetic mean roughness Ra1 of the first region S1 and the arithmetic mean roughness Ra2 of the second region S2 satisfy Ra1<Ra2.
    Type: Grant
    Filed: June 18, 2019
    Date of Patent: September 17, 2024
    Assignee: PANASONIC ENERGY CO., LTD.
    Inventors: Akira Takano, Oose Okutani
  • Publication number: 20240304958
    Abstract: A cylindrical battery comprises: a wound electrode body having a hollow section extending in the axial direction; and collector plates, each collector plate including a protrusion having an apex accommodated in the hollow section, and a groove part provided integrally with the protrusion on the outside in the radial direction of the protrusion so as to define a groove, the collector plates being more toward the outside in the axial direction than the electrode body. In a core body of at least one of a positive and a negative electrode, a core body exposed portion without a mixture layer is joined to a core body Joining portion (an upper surface of a ridge part, and a lower surface of a ridge part of the collector plate. The core body joining portion includes an opposing part that radially opposes an integral structure comprising the protrusion and the groove part.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 12, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Suguru Matsumura, Oose Okutani
  • Publication number: 20240297418
    Abstract: A plate-shaped current collector plate includes a first main surface and a second main surface that is opposite to the first main surface. The current collector plate includes: a first portion that is positioned at a central portion of the current collector plate; a plurality of second portions that extend in a first direction away from the first portion; and a plurality of third portions which extend from portions of the plurality of second portions spaced apart from the first portion and protrude in a second direction that intersects with the first direction. In two adjacent second portions of the plurality of second portions, a gap is provided between a third portion that extends from one of the two adjacent second portions among the plurality of third portions and a third portion that extends from an other one of the two adjacent second portions among the plurality of third portions.
    Type: Application
    Filed: July 7, 2022
    Publication date: September 5, 2024
    Inventors: SHINICHI SAKAMOTO, KIYOMI KOZUKI, SHINYA GESHI, OOSE OKUTANI
  • Publication number: 20240291119
    Abstract: A cylindrical battery comprises an electrode body in which a long positive electrode having a plurality of positive electrode lead portions and a long negative electrode are wound with a separator therebetween, a bottomed cylindrical external can that accommodates the electrode body, and a sealing body which is crimp fixed to an opening of the external can. The sealing body has a sealing plate and a current collector plate having a through-hole, and the plurality of positive electrode lead portions pass through the through-hole in the current collector plate and are bent and joined above the current collector plate.
    Type: Application
    Filed: June 9, 2022
    Publication date: August 29, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shin Haraguchi, Oose Okutani, Ryota Okimoto
  • Publication number: 20240274936
    Abstract: A sealed battery that is an example of an embodiment comprises: an electrode assembly; an outer housing can that houses the electrode assembly; and a sealing assembly that closes an opening of the outer can. The sealing assembly includes: a cap; and a current collector plate that is located closer to the electrode assembly than the cap and that is welded to the cap. The current collector plate has, in a portion thereof welded to the cap, a recess protruding toward the cap.
    Type: Application
    Filed: June 17, 2022
    Publication date: August 15, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Ryota Okimoto, Oose Okutani, Shin Haraguchi, Takasumi Hasegawa, Naoyuki Tsurudome
  • Publication number: 20240234977
    Abstract: A cylindrical battery having a bottomed tubular exterior can; an electrode body in the exterior can and around which a long positive electrode and a long negative electrode are wound with a separator therebetween; a plurality of negative-electrode lead parts extending from a long negative-electrode current collector of the negative electrode toward the bottom part of the exterior can; a first current-collector plate that is disposed on the bottom part side of the electrode body and that has at least two through-holes at the positions different from each other in the radial direction; and a second current-collector plate disposed between the first current-collector plate and the bottom part. The negative-electrode lead parts each pass through any one of the through-holes. Leading-end portions of the plurality of negative-electrode lead parts are sandwiched between the first current-collector plate and the second current-collector plate, and are electrically connected to the second current-collector plate.
    Type: Application
    Filed: February 24, 2022
    Publication date: July 11, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shin Haraguchi, Oose Okutani, Ryota Okimoto
  • Publication number: 20240145883
    Abstract: A cylindrical battery comprises: an outer can having a bottomed cylinder shape; an electrode body that is accommodated inside the outer can, and in which an elongated positive electrode and an elongated negative electrode having different polarities from each other are wound with a separator interposed therebetween; a metal plate that is disposed between the electrode body and a bottom part of the outer can; and a plurality of negative electrode lead parts that extend from the negative electrode towards the bottom part. A tip part of each negative electrode lead part is sandwiched between the metal plate and the bottom part, and is electrically connected to the bottom part.
    Type: Application
    Filed: February 15, 2022
    Publication date: May 2, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shin Haraguchi, Oose Okutani, Ryota Okimoto
  • Publication number: 20240136675
    Abstract: A cylindrical battery having a bottomed tubular exterior can; an electrode body in the exterior can and around which a long positive electrode and a long negative electrode are wound with a separator therebetween; a plurality of negative-electrode lead parts extending from a long negative-electrode current collector of the negative electrode toward the bottom part of the exterior can; a first current-collector plate that is disposed on the bottom part side of the electrode body and that has at least two through-holes at the positions different from each other in the radial direction; and a second current-collector plate disposed between the first current-collector plate and the bottom part. The negative-electrode lead parts each pass through any one of the through-holes. Leading-end portions of the plurality of negative-electrode lead parts are sandwiched between the first current-collector plate and the second current-collector plate, and are electrically connected to the second current-collector plate.
    Type: Application
    Filed: February 24, 2022
    Publication date: April 25, 2024
    Applicant: Panasonic Energy Co., Ltd.
    Inventors: Shin Haraguchi, Oose Okutani, Ryota Okimoto
  • Publication number: 20240055719
    Abstract: This sealed battery is provided with a bottomed tubular outer can for accommodating an electrode body, and a sealing body for sealing an opening part of the outer can. The outer can has a gas exhaust valve which ruptures when the pressure inside the battery reaches a predetermined value. The gas exhaust valve includes a plurality of linear grooves. The sealed battery is characterized in that; the cross-sectional shape of the grooves is a tapering shape in which the width of open ends on the side of the surface of the outer can is shorter than the width of the bottom; the grooves have at least one crossing part; and the crossing part has a flat section in the bottom.
    Type: Application
    Filed: March 18, 2022
    Publication date: February 15, 2024
    Applicants: Panasonic Energy Co., Ltd., Panasonic Holdings Corporation
    Inventors: Oose Okutani, Kazutoshi Kohira
  • Patent number: 11881550
    Abstract: A battery including: a battery can having a cylindrical portion, a bottom wall closing one end of the cylindrical portion, and an open rim continuous with the other end of the cylindrical portion; an electrode body housed in the cylindrical portion; and a sealing body fixed to the open rim so as to seal an opening defined by the open rim. The sealing body includes a sealing plate and a gasket disposed at a peripheral portion of the sealing plate. The gasket has at least one protruding portion configured to restrict insertion of the sealing body into the open rim.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: January 23, 2024
    Assignees: PANASONIC ENERGY CO., LTD., PANASONIC HOLDINGS CORPORATION
    Inventors: Oose Okutani, Shinya Geshi
  • Patent number: 11876245
    Abstract: A sealed battery including a battery case that includes a cylindrical exterior can having a bottom and an opening sealing body that closes an opening of the outer can; a gasket that is arranged between the exterior can and the opening sealing body; and an electrode body. The opening sealing body includes: a metal plate with an annular part to which an electrode lead is electrically connected, and a disconnecting part that is separated from the annular part when the inner pressure of the battery case exceeds a predetermined threshold; a valve body that is arranged further to the outside of the battery case than the metal plate; and an insulating plate that is arranged between the metal plate and the valve body. The insulating plate or the gasket is provided with an elastic deformation part that deforms in the direction of the valve body.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: January 16, 2024
    Assignee: PANASONIC ENERGY CO., LTD.
    Inventors: Masayoshi Yoshida, Oose Okutani, Takahiro Nogami, Akira Takano
  • Publication number: 20240006726
    Abstract: A secondary battery according to one embodiment of the present disclosure is characterized by comprising a metal case main body, and an electrode body that is accommodated in the case main body and formed by winding a positive electrode and negative electrode with a separator interposed therebetween, wherein: the negative electrode includes a negative electrode current collector, a negative electrode active material layer formed on the negative electrode current collector, and a negative electrode current collector exposed section where the negative electrode current collector is exposed; the negative electrode current collector exposed section is disposed on a winding ending section of the electrode body and makes more than one lap circling in the winding starting direction L from the winding ending section of the electrode body, thereby forming a laminated part comprising the negative electrode exposed section, the laminated part and the case main body being welded together.
    Type: Application
    Filed: August 19, 2021
    Publication date: January 4, 2024
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Akira Takano, Oose Okutani
  • Patent number: 11817547
    Abstract: A wound-type battery includes a wound electrode group having a first electrode and a second electrode with polarity opposite to the first electrode, an electrolyte, a battery case, a sealing plate that seals an opening of the battery case, an insulating plate that is disposed between the electrode group and the sealing plate and that has a hole, and a first tab that passes through the hole to electrically connect the first electrode and the sealing plate to each other. At least a part of a region of the first tab that extends through the hole to a sealing plate side is covered with a tab tape on a side facing the insulating plate. The tab tape includes at least a first adhesive layer and a second adhesive layer on a side opposite the first adhesive layer and is in contact with the first tab through the first adhesive layer.
    Type: Grant
    Filed: September 26, 2019
    Date of Patent: November 14, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masayoshi Yoshida, Oose Okutani, Takeshi Enomoto, Akira Takano
  • Patent number: 11699834
    Abstract: A sealed battery, which is an exemplary embodiment, comprises a battery case including a bottomed cylindrical outer can and a sealing body that closes an opening of the outer can, a gasket disposed between the outer can and the sealing body, and an electrode body including an electrode and housed in the battery case. The sealing body includes a metal plate, and the metal plate has a thin portion formed in an annular shape, a valve portion having a convex shape inside the battery case, and an annular portion to which the electrode lead is connected. The gasket is provided with an elastically deformable portion that abuts against the inner surface of the valve portion and urges the valve portion to the outside of the battery case.
    Type: Grant
    Filed: January 16, 2020
    Date of Patent: July 11, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masayoshi Yoshida, Oose Okutani, Takahiro Nogami, Akira Takano
  • Patent number: 11695162
    Abstract: A secondary battery according to an embodiment includes: an electrode body which contains a positive electrode, a negative electrode, and at least one separator interposed between the positive electrode and the negative electrode; a case main body which receives the electrode body; a sealing body which seals an opening portion of the case main body; and a sealing body-side insulating member provided between the sealing body and one end portion of the electrode body and a case main body-side insulating member; the one end portion and the other end portion of the electrode body each form a protruding section; and the sealing body-side insulating member includes a base material and an adhesive layer which is disposed on the base material and which contains a cured object of a curable resin, and the protruding section of the one end portion of the electrode body is adhered to the adhesive layer.
    Type: Grant
    Filed: February 13, 2019
    Date of Patent: July 4, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Oose Okutani
  • Patent number: 11670771
    Abstract: A battery according to an aspect of the present disclosure includes: a positive electrode, a negative electrode, a positive electrode tab electrically connected to the positive electrode; a negative electrode tab electrically connected to the negative electrode; a positive electrode tab tape covering the positive electrode tab: and a negative electrode tab tape covering the negative electrode tab. In the battery described above, at least one tab tape of the positive electrode tab tape and the negative electrode tab tape has a multilayer structure in which an adhesive layer and a substrate layer primarily formed from an organic material are laminated in this order from an electrode tab side, and the adhesive layer contains an adhesive material and a reactive material which generates an endothermic reaction at a temperature lower than a heat resistance temperature of the organic material.
    Type: Grant
    Filed: February 1, 2019
    Date of Patent: June 6, 2023
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Masayoshi Yoshida, Oose Okutani
  • Patent number: 11664549
    Abstract: A metal case has a cylindrical body section, an opening section at one end of the body section, the opening section having an opening, and a bottom section closing the other end of the body section. At least one of the body section and the opening section has a protrusion sticking outward in the direction of the radius of the body section.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: May 30, 2023
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Akira Takano, Oose Okutani, Takeshi Enomoto, Masayoshi Yoshida