Patents by Inventor Yuki Suehiro

Yuki Suehiro 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).

  • Publication number: 20200350634
    Abstract: A cylindrical secondary battery including an electrode group which includes a first columnar region in which the number of times positive electrode mixture layers are stacked in the radial direction of the electrode group is highest and a second columnar region. The first columnar region includes a 1A arc column region that includes an outer periphery-side end surface of the positive electrode mixture layers and a 1B arc column region that does not include the end surface. The negative electrode current collector includes a first exposed part located on the periphery of the negative electrode. The negative electrode current collection lead includes an overlap part that overlaps the first exposed part and a lead-out part. The overlap part of the negative electrode current collection lead is not located on the boundary between the 1A arc column region and the second columnar region of the electrode group.
    Type: Application
    Filed: October 31, 2018
    Publication date: November 5, 2020
    Inventor: Yuki SUEHIRO
  • Publication number: 20200212503
    Abstract: A winding-type battery includes a battery case, a power generating element, a cap for blocking an opening of the battery case, and a gasket for insulating the battery case from the cap. The power generating element includes a first electrode, a second electrode, a separator interposed between them, and an electrolyte. The first electrode and the second electrode are wound via the separator to form an electrode group, and the first electrode is connected to the cap via a first current collecting lead, and the second electrode is connected to the battery case via a second current collecting lead. A groove is formed near the opening end of the battery case. The gasket includes: an annular seal portion interposed between a rim of the cap and the region from the groove to the end; and a tubular portion that is integrated with the seal portion, and is disposed closer to the electrode group than the seal portion is. The first current collecting lead is connected to the cap through a hollow in the tubular portion.
    Type: Application
    Filed: March 10, 2020
    Publication date: July 2, 2020
    Inventors: Teruhisa MIURA, Koki INOUE, Akira KAKINUMA, Katsuhisa WADASAKI, Yasutaka KOGETSU, Yuki SUEHIRO
  • Patent number: 10637102
    Abstract: A winding-type battery includes a battery case, a power generating element, a cap for blocking an opening of the battery case, and a gasket for insulating the battery case from the cap. The first electrode is connected to the cap via a first current collecting lead, and the second electrode is connected to the battery case via a second current collecting lead. A groove is formed near the opening end of the battery case. The gasket includes: an annular seal portion interposed between a rim of the cap and the region from the groove to the end; and a tubular portion that is integrated with the seal portion, and is disposed closer to the electrode group than the seal portion is. The first current collecting lead is connected to the cap through a hollow in the tubular portion.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: April 28, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Teruhisa Miura, Koki Inoue, Akira Kakinuma, Katsuhisa Wadasaki, Yasutaka Kogetsu, Yuki Suehiro
  • Patent number: 10615426
    Abstract: In a winding-type battery, the first electrode and the second electrode are wound via the separator to form an electrode group having first and second end surfaces. The first electrode includes a first current collector sheet, and a first active material layer formed on a surface of the first current collector sheet. A first current collecting lead is connected to the first electrode. The second electrode includes a second current collector sheet, and a second active material layer formed on a surface of the second current collector sheet. A second current collecting lead is connected to the second electrode. At an end of the first electrode that is disposed on the first end surface and/or an end of the first electrode that is disposed on the second end surface, at least a winding termination portion located on the outermost periphery of the electrode group has a notch.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: April 7, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Suehiro, Seiichi Aoki, Yasuhiro Suzuki, Katsuhisa Wadasaki
  • Patent number: 10573903
    Abstract: In a winding-type battery, the first electrode and the second electrode are wound via the separator to form an electrode group having first and second end surfaces. The first electrode includes a first current collector sheet, and a first active material layer formed on a surface of the first current collector sheet. A first current collecting lead is connected to the first electrode. The second electrode includes a second current collector sheet, and a second active material layer formed on a surface of the second current collector sheet. A second current collecting lead is connected to the second electrode. At an end of the first electrode that is disposed on the first end surface and/or an end of the first electrode that is disposed on the second end surface, at least a winding termination portion located on the outermost periphery of the electrode group has a notch.
    Type: Grant
    Filed: June 20, 2016
    Date of Patent: February 25, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yuki Suehiro, Seiichi Aoki, Yasuhiro Suzuki, Katsuhisa Wadasaki
  • Patent number: 10566598
    Abstract: A winding-type battery includes an electrode group that is formed by winding a first electrode and a second electrode via a separator and has a first end surface and a second end surface. The first electrode includes a first current collector sheet, and a first active material layer formed on its surface. The second electrode includes a second current collector sheet, and a second active material layer formed on its surface. The first current collector sheet includes, at its end disposed on the first end surface of the electrode group, a first uncoated portion having no first active material layer on either surface thereof. An edge surface of the first uncoated portion is at least partially covered with an insulating layer, and an end of the insulating layer projects more than an end of the separator on the first end surface.
    Type: Grant
    Filed: June 15, 2016
    Date of Patent: February 18, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasutaka Kogetsu, Sadayuki Okazaki, Katsuhisa Wadasaki, Yuki Suehiro
  • Publication number: 20190363330
    Abstract: A wound battery includes: a battery case having an opening; an electrode group and electrolyte; a sealing body for blocking the opening of the battery case; and a gasket for insulating the sealing body from the battery case. The first electrode is connected to the sealing body via a first current collecting lead, and the second electrode is connected to the battery case via a second current collecting lead. One end of the second current collecting lead is connected to the second electrode, and the other end is pulled out from the end surface of the opening side of the electrode group and is connected to the side-wall inner surface on the opening side of the battery case. The second current collecting lead includes at least one of stainless steel and nickel, and the breaking elongation is 15% or more.
    Type: Application
    Filed: November 17, 2017
    Publication date: November 28, 2019
    Inventors: YUKI SUEHIRO, TERUHISA MIURA
  • Patent number: 10090510
    Abstract: An object is to improve the safety of a non-aqueous electrolyte secondary battery at the time of the internal short circuit. The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode includes a current collector and a positive electrode active material layer formed on the current collector. The current collector includes a metal foil having a roughened surface. The negative electrode includes a silicon-containing negative electrode active material. The metal foil is preferably a metal foil containing aluminum. The metal foil preferably has a surface roughness Ra of 0.1 to 2.0 ?m.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: October 2, 2018
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yuki Suehiro, Taizou Sunano
  • Patent number: 10050262
    Abstract: Provided is a negative electrode for a non-aqueous electrolyte secondary battery, capable of improving the energy density and the cycle characteristics of the battery without lowering the initial charge/discharge efficiency of the battery. This negative electrode includes a negative electrode active material including a silicon oxide represented by SiOx and carbon material. A proportion of a mass of the silicon oxide relative to a total mass of the silicon oxide and the carbon material: y satisfies 0.03?y?0.3. A difference between a theoretical capacity density of the negative electrode active material and a charge capacity density of the negative electrode active material when a cutoff voltage is 5 mV relative to lithium metal: ?C (mAhg?1) satisfies L=?C/100 and 6y?L?12y+0.2.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: August 14, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANGEMENT CO., LTD.
    Inventors: Yuki Suehiro, Taisuke Yamamoto, Tatsuki Hiraoka, Katsumi Kashiwagi
  • Publication number: 20180183109
    Abstract: A winding-type battery includes a battery case, a power generating element, a cap for blocking an opening of the battery case, and a gasket for insulating the battery case from the cap. The first electrode is connected to the cap via a first current collecting lead, and the second electrode is connected to the battery case via a second current collecting lead. A groove is formed near the opening end of the battery case. The gasket includes: an annular seal portion interposed between a rim of the cap and the region from the groove to the end; and a tubular portion that is integrated with the seal portion, and is disposed closer to the electrode group than the seal portion is. The first current collecting lead is connected to the cap through a hollow in the tubular portion.
    Type: Application
    Filed: July 19, 2016
    Publication date: June 28, 2018
    Inventors: TERUHISA MIURA, KOKI INOUE, AKIRA KAKINUMA, KATSUHISA WADASAKI, YASUTAKA KOGETSU, YUKI SUEHIRO
  • Publication number: 20180145304
    Abstract: A winding-type battery includes an electrode group that is formed by winding a first electrode and a second electrode via a separator and has a first end surface and a second end surface. The first electrode includes a first current collector sheet, and a first active material layer formed on its surface. The second electrode includes a second current collector sheet, and a second active material layer formed on its surface. The first current collector sheet includes, at its end disposed on the first end surface of the electrode group, a first uncoated portion having no first active material layer on either surface thereof. An edge surface of the first uncoated portion is at least partially covered with an insulating layer, and an end of the insulating layer projects more than an end of the separator on the first end surface.
    Type: Application
    Filed: June 15, 2016
    Publication date: May 24, 2018
    Inventors: YASUTAKA KOGETSU, SADAYUKI OKAZAKI, KATSUHISA WADASAKI, YUKI SUEHIRO
  • Publication number: 20180131009
    Abstract: In a winding-type battery, the first electrode and the second electrode are wound via the separator to form an electrode group having first and second end surfaces. The first electrode includes a first current collector sheet, and a first active material layer formed on a surface of the first current collector sheet. A first current collecting lead is connected to the first electrode. The second electrode includes a second current collector sheet, and a second active material layer formed on a surface of the second current collector sheet. A second current collecting lead is connected to the second electrode. At an end of the first electrode that is disposed on the first end surface and/or an end of the first electrode that is disposed on the second end surface, at least a winding termination portion located on the outermost periphery of the electrode group has a notch.
    Type: Application
    Filed: June 20, 2016
    Publication date: May 10, 2018
    Inventors: YUKI SUEHIRO, SEIICHI AOKI, YASUHIRO SUZUKI, KATSUHISA WADASAKI
  • Publication number: 20180013131
    Abstract: It is an object of the present invention to provide a negative electrode plate for a non-aqueous electrolyte secondary battery that has high capacity and good cycle characteristics and a non-aqueous electrolyte secondary battery. A negative electrode plate for a non-aqueous electrolyte secondary battery according to the present invention contains a negative-electrode active material containing a carbon material and a silicon oxide, carboxymethylcellulose, a polyacrylate partially neutralized by at least one of NaOH and NH3, and a copolymer containing at least two selected from the group consisting of styrene, butadiene, methyl acrylate, methyl methacrylate, and acrylonitrile as constitutional units.
    Type: Application
    Filed: January 18, 2016
    Publication date: January 11, 2018
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Satoshi Yamamoto, Yuki Suehiro
  • Publication number: 20170047579
    Abstract: An object is to improve the safety of a non-aqueous electrolyte secondary battery at the time of the internal short circuit. The non-aqueous electrolyte secondary battery includes a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode. The positive electrode includes a current collector and a positive electrode active material layer formed on the current collector. The current collector includes a metal foil having a roughened surface. The negative electrode includes a silicon-containing negative electrode active material. The metal foil is preferably a metal foil containing aluminum. The metal foil preferably has a surface roughness Ra of 0.1 to 2.0 ?m.
    Type: Application
    Filed: February 6, 2015
    Publication date: February 16, 2017
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Yuki Suehiro, Taizou Sunano
  • Publication number: 20140356723
    Abstract: Provided is a negative electrode for a non-aqueous electrolyte secondary battery, capable of improving the energy density and the cycle characteristics of the battery without lowering the initial charge/discharge efficiency of the battery. This negative electrode includes a negative electrode active material including a silicon oxide represented by SiOx and carbon material. A proportion of a mass of the silicon oxide relative to a total mass of the silicon oxide and the carbon material: y satisfies 0.03?y?0.3. A difference between a theoretical capacity density of the negative electrode active material and a charge capacity density of the negative electrode active material when a cutoff voltage is 5 mV relative to lithium metal: ?C (mAhg?1) satisfies L=?C/100 and 6y?L?12y+0.2.
    Type: Application
    Filed: December 28, 2012
    Publication date: December 4, 2014
    Applicant: PANASONIC CORPORATION
    Inventors: Yuki Suehiro, Taisuke Yamamoto, Tatsuki Hiraoka, Katsumi Kashiwagi