Patents by Inventor Motoki Kinugawa

Motoki Kinugawa 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: 20220045310
    Abstract: A method of manufacturing an electrode includes: an application process of applying mixture slurry containing a dispersion medium and an electrode mixture that contains an electrode active material onto a surface of a core material sheet to form a first electrode plate having a wet coating film; a drying process of heating the first electrode plate at a first temperature to volatilize the dispersion medium from the wet coating film to form a second electrode plate having a dry coating film; and a firing process of heating the second electrode plate at a second temperature higher than the first temperature to obtain a fired third electrode plate. In the firing process, the second electrode plate is heated at the second temperature while being transported by a roll-to-roll method.
    Type: Application
    Filed: December 6, 2019
    Publication date: February 10, 2022
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tatsuya Akira, Yuta Kuroda, Satoaki Hojo, Motoki Kinugawa
  • Patent number: 11183678
    Abstract: An electrode for a nonaqueous electrolyte secondary battery that is less likely to cause loss of a mixture layer and that can ensure good cycle characteristics of the battery. An electrode for a nonaqueous electrolyte secondary battery of an exemplary embodiment includes a rectangular current collector and a mixture layer that contains an active material and a binder and that is formed on the current collector. The mixture layer covers at least one edge of four linear peripheral edges of the current collector, and the binder content in the mixture layer has a maximum value at a position 0.5 mm to 5.5 mm away from the one edge in a second direction that is perpendicular to a first direction along the one edge. The maximum value is more than 100% and 240% or less of the binder content at the center in the second direction of the mixture layer.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: November 23, 2021
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yuta Fukutomi, Motoki Kinugawa, Tomofumi Yanagi
  • Patent number: 11024927
    Abstract: An electrode for a non-aqueous electrolyte secondary battery according to one embodiment includes a belt-like current collector, a mixture layer formed on each surface of the current collector, and a lead bonded to an exposed portion of the current collector where the surfaces of the current collector are exposed, the lead extending from one end of the current collector, the one end and another end constituting both ends of the current collector in the width direction. The mixture layer on at least one surface of the current collector is formed in the width direction of the current collector and adjacent to the exposed portion on the other end side, and the length in the width direction of a portion of the lead disposed on the current collector ranges from 60% to 98% of the width of the current collector.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: June 1, 2021
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Toshitaka Moriyama, Motoki Kinugawa, Tomofumi Yanagi
  • Publication number: 20210013482
    Abstract: This electrode plate for a non-aqueous electrolyte secondary battery has a band-like core and a first active substance layer formed on at least a first surface of the core. A current-collecting lead is connected to an exposed section at which a portion of the first surface of the core is exposed in the longitudinal direction. The electrode plate for a non-aqueous electrolyte secondary battery has a second active substance layer which is more electroconductive than the first active substance layer and which is disposed on a portion of the first surface such that it adjoins with the exposed section.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 14, 2021
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Takanori Maruo, Shinji Mino, Motoki Kinugawa
  • Publication number: 20200295350
    Abstract: A lithium secondary battery positive electrode with: a metallic foil; and a positive electrode mixture layer formed on a surface of the metallic foil and containing a binding agent, a conductive agent, and a positive electrode active material comprising a lithium-transition metal complex oxide, wherein the positive electrode has a diameter of the liquid-removed space of at most 6.5 mm as measured by a wettability evaluation test, wherein a positive electrode is placed inside a container, and a prescribed test solution is added to a prescribed liquid-surface level, and nitrogen is sprayed thereon from a prescribed pipe at a prescribed pressure. A measurement is taken of the diameter of a region from which the solution has been removed by the spraying, and a mean value of such diameters measured between 0.5 seconds and 1.5 seconds after the initiation of the spraying is used as the diameter of the liquid-removed space.
    Type: Application
    Filed: June 3, 2020
    Publication date: September 17, 2020
    Applicant: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Shinji Mino, Takanori Maruo, Motoki Kinugawa
  • Publication number: 20200185689
    Abstract: The present disclosure provides a non-aqueous electrolyte secondary battery having a stable open-circuit voltage. An electrode for a non-aqueous electrolyte secondary battery according to one embodiment includes a belt-like current collector, a mixture layer formed on each surface of the current collector, and a lead bonded to an exposed portion of the current collector where the surfaces of the current collector are exposed, the lead extending from one end of the current collector, the one end and another end constituting both ends of the current collector in the width direction. In an electrode for a non-aqueous electrolyte secondary battery according to one embodiment, a mixture layer is formed on at least one surface of a current collector in the width direction of the current collector and adjacent to an exposed portion on one end side.
    Type: Application
    Filed: October 13, 2017
    Publication date: June 11, 2020
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Toshitaka Moriyama, Motoki Kinugawa, Tomofumi Yanagi
  • Patent number: 10497985
    Abstract: An electrode plate for power storage devices having a high capacity and a power storage device including the electrode plate for power storage devices, an exemplary embodiment includes a strip-shaped positive electrode core and a positive electrode active material layer provided on at least one surface of the positive electrode core. A bare part is formed in an end portion of the positive electrode core in the width direction. The bare part is a part in which the surface of the core is exposed and to which a positive electrode lead is to be connected. The positive electrode active material layer has a thin part in at least part of a first region aligned with the bare part in the longitudinal direction of the positive electrode core. The thin part is thinner than a second region, which is a region other than the first region.
    Type: Grant
    Filed: October 27, 2016
    Date of Patent: December 3, 2019
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Eisuke Sato, Motoki Kinugawa, Naoyuki Koide
  • Publication number: 20190267611
    Abstract: An electrode for a nonaqueous electrolyte secondary battery that is less likely to cause loss of a mixture layer and that can ensure good cycle characteristics of the battery. An electrode for a nonaqueous electrolyte secondary battery of an exemplary embodiment includes a rectangular current collector and a mixture layer that contains an active material and a binder and that is formed on the current collector. The mixture layer covers at least one edge of four linear peripheral edges of the current collector, and the binder content in the mixture layer has a maximum value at a position 0.5 mm to 5.5 mm away from the one edge in a second direction that is perpendicular to a first direction along the one edge. The maximum value is more than 100% and 240% or less of the binder content at the center in the second direction of the mixture layer.
    Type: Application
    Filed: October 25, 2017
    Publication date: August 29, 2019
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Yuta Fukutomi, Motoki Kinugawa, Tomofumi Yanagi
  • Publication number: 20190252667
    Abstract: An electrode for a non-aqueous electrolyte secondary battery according to one embodiment includes a belt-like current collector, a mixture layer formed on each surface of the current collector, and a lead bonded to an exposed portion of the current collector where the surfaces of the current collector are exposed, the lead extending from one end of the current collector, the one end and another end constituting both ends of the current collector in the width direction. The mixture layer on at least one surface of the current collector is formed in the width direction of the current collector and adjacent to the exposed portion on the other end side, and the length in the width direction of a portion of the lead disposed on the current collector ranges from 60% to 98% of the width of the current collector.
    Type: Application
    Filed: October 13, 2017
    Publication date: August 15, 2019
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Toshitaka Moriyama, Motoki Kinugawa, Tomofumi Yanagi
  • Publication number: 20190054495
    Abstract: A power storage device and an applicator is obtained that achieve an increase in capacity and an improvement in productivity, and that enable the thickness of a mixture layer to be inhibited from varying. A positive electrode mixture slurry is discharged into discharge regions of a belt-like positive electrode current collector that extend in a length direction of the positive electrode current collector from discharge nozzles corresponding to the respective discharge regions to form a positive electrode mixture layer on the positive electrode current collector. The discharge regions are arranged such that a part of each of the discharge regions overlaps a part of another of the discharge regions adjacent thereto when viewed in the length direction to form overlapping portions. The positive electrode mixture slurry is intermittently discharged to form an exposed portion on at least one of the discharge regions.
    Type: Application
    Filed: October 27, 2016
    Publication date: February 21, 2019
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Masashi Tsukamoto, Tomofumi Yanagi, Motoki Kinugawa
  • Publication number: 20180287213
    Abstract: An electrode plate for power storage devices having a high capacity and a power storage device including the electrode plate for power storage devices, an exemplary embodiment includes a strip-shaped positive electrode core and a positive electrode active material layer provided on at least one surface of the positive electrode core. A bare part is formed in an end portion of the positive electrode core in the width direction. The bare part is a part in which the surface of the core is exposed and to which a positive electrode lead is to be connected. The positive electrode active material layer has a thin part in at least part of a first region aligned with the bare part in the longitudinal direction of the positive electrode core. The thin part is thinner than a second region, which is a region other than the first region.
    Type: Application
    Filed: October 27, 2016
    Publication date: October 4, 2018
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Eisuke Sato, Motoki Kinugawa, Naoyuki Koide
  • Patent number: 9620767
    Abstract: An electrode active material layer containing an electrode active material and a binder. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from an outer surface of the electrode active material layer toward the core. The amount of the binder present in the electrode active material layer per unit thickness is less than 10 in a region extending from a position 90% of the thickness of the electrode active material layer to a position 100% of the thickness of the electrode active material layer from a surface of the electrode active material layer facing the core, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed in the electrode active material layer.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: April 11, 2017
    Assignee: SANYO ELECTRIC CO., LTD.
    Inventors: Motoki Kinugawa, Kenji Date
  • Patent number: 9312542
    Abstract: An electrode active material layer containing an electrode active material and a binder. The electrode active material layer includes a portion containing the smallest amount of the binder in a middle region across the thickness of the electrode active material layer. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from the portion toward the core and an outer surface of the electrode active material layer. Preferably, the amount of the binder present in the electrode active material layer per unit thickness is limited to more than 10 in a region extending 10% of the thickness from the outer surface of the electrode active material layer, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: April 12, 2016
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Motoki Kinugawa, Kenji Date
  • Publication number: 20150303478
    Abstract: An electrode active material layer containing an electrode active material and a binder. The electrode active material layer includes a portion containing the smallest amount of the binder in a middle region across the thickness of the electrode active material layer. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from the portion toward the core and an outer surface of the electrode active material layer. Preferably, the amount of the binder present in the electrode active material layer per unit thickness is limited to more than 10 in a region extending 10% of the thickness from the outer surface of the electrode active material layer, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed.
    Type: Application
    Filed: October 23, 2013
    Publication date: October 22, 2015
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Motoki Kinugawa, Kenji Date
  • Publication number: 20150263333
    Abstract: An electrode active material layer containing an electrode active material and a binder. The binder is distributed in the electrode active material layer such that the amount of the binder increases continuously from an outer surface of the electrode active material layer toward the core. The amount of the binder present in the electrode active material layer per unit thickness is less than 10 in a region extending from a position 90% of the thickness of the electrode active material layer to a position 100% of the thickness of the electrode active material layer from a surface of the electrode active material layer facing the core, with 10 being assigned to the amount of the binder present in the electrode active material layer per unit thickness if the binder is uniformly distributed in the electrode active material layer.
    Type: Application
    Filed: October 23, 2013
    Publication date: September 17, 2015
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Motoki Kinugawa, Kenji Date