Patents by Inventor Kojiro TAMARU

Kojiro TAMARU 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: 20210280948
    Abstract: An electricity storage device according to one embodiment is an electricity storage device in which a plurality of bipolar electrodes in which a positive electrode layer is provided on one surface of a collector plate and a negative electrode layer is provided on the other surface of the collector plate are stacked via separators and includes a plurality of spacers arranged along peripheral edges of the collector plates between the respective collector plates adjacent to each other in a stacking direction and a resin frame covering outer peripheries of the plurality of spacers.
    Type: Application
    Filed: June 20, 2017
    Publication date: September 9, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kojiro TAMARU, Takayuki HIROSE, Atsuhiko NISHII, Satoshi ENDO, Tomohiro NAKAMURA
  • Publication number: 20210234221
    Abstract: A power storage device includes a plurality of power storage modules laminated, a conductive plate and a sealing member. The conductive plate and the sealing member are provided between the power storage modules adjacent to each other in a laminating direction of the power storage modules. The plurality of power storage modules each have an electrode laminate, an electrolytic solution, and a sealing body. The electrode laminate has electrode exposed portions exposed from the sealing body at one end and the other end in the laminating direction. Between the power storage modules adjacent to each other in the laminating direction, the conductive plate is disposed between the electrode exposed portions opposing each other to be in contact with the electrode exposed portions, and at least a portion between the sealing bodies opposing each other is filled with the sealing member.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 29, 2021
    Applicants: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Satoshi HAMAOKA, Taku INOUE, Hiromi UEDA, Kojiro TAMARU, Satoshi MORIOKA, Motoyoshi OKUMURA
  • Publication number: 20210184301
    Abstract: A method for manufacturing an electricity-storage module includes: preparing a stacked body and first sealing portions; processing an extension portion of one or more first sealing portions included in an outer edge portion in a stacking direction of the stacked body so that an extension portion length of the one or more of first sealing portions becomes shorter than a length of the extension portions of the first sealing portions which are not included in the outer edge portion; and forming a second sealing portion that is provided at the periphery of the first sealing portions when viewed from the stacking direction and covers at least parts of outer surfaces of the first sealing portions located at stacking ends of the stacked body in the stacking direction by injection molding in which a resin material is caused to circulate in a mold frame.
    Type: Application
    Filed: September 11, 2018
    Publication date: June 17, 2021
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masahiro YAMADA, Kojiro TAMARU, Takafumi YAMASAKI, Takashi SAKAI, HIroki MAEDA, Naoto MORISAKU, Hiromi UEDA, Akihito TSUGE, Koji TSUKAMOTO
  • Patent number: 10910644
    Abstract: A nickel-hydrogen battery includes a plurality of electrodes each including a current collector made of a metal, and disposed in a manner stacked in a first direction; a separator disposed between adjacent electrodes of the plurality of electrodes; a plurality of resin members disposed on peripheral portions of the plurality of electrodes to ensure a clearance between the adjacent electrodes; and a surface treatment layer covering one surface of the current collector at least in the peripheral portion of the plurality of electrode. The surface treatment layer includes a plurality of protrusions from the one surface. Widest parts of the protrusions are located above base ends thereof, and parts of the resin members are interposed between adjacent protrusions, across a range from tip ends to the base ends thereof.
    Type: Grant
    Filed: January 24, 2018
    Date of Patent: February 2, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomohiro Nakamura, Takayuki Hirose, Kojiro Tamaru, Yuki Sugimoto, Hirokuni Akiyama, Motoyoshi Okumura, Takuro Kikuchi, Hidenori Takahashi, Nobuyasu Haga
  • Publication number: 20200403200
    Abstract: A battery module includes an electrode laminate including a plurality of electrodes that are laminated, and a sealing body sealing a side surface of the electrode laminate. The sealing body is provided with a communication hole communicating an internal space between the electrodes adjacent in a laminating direction in the electrode laminate. The communication hole includes an opening end on an outer surface of the sealing body. A length of the opening end in the laminating direction is longer than a length of the internal space in the laminating direction.
    Type: Application
    Filed: January 23, 2019
    Publication date: December 24, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kojiro TAMARU, Taku INOUE, Hiroki MAEDA, Tsuyoshi MARIYA
  • Publication number: 20200358050
    Abstract: A power storage module includes an electrode laminate including a plurality of bipolar electrodes which are laminated and a sealing body sealing a space between a pair of the bipolar electrodes adjacent to each other in a laminating direction among the plurality of bipolar electrodes in the electrode laminate. Each of the plurality of bipolar electrodes includes an electrode plate. The sealing body includes a group of primary sealing bodies each provided at an edge portion of the electrode plate and a secondary sealing body. The secondary sealing body includes a first resin portion that is provided along a side surface of the electrode laminate extending in the laminating direction and bonds the group of primary sealing bodies, and a second resin portion covering the first resin portion.
    Type: Application
    Filed: January 28, 2019
    Publication date: November 12, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kojiro TAMARU, Takafumi YAMASAKI, Hiromi UEDA, Tsuyoshi MARIYA, Masahiro YAMADA
  • Patent number: 10756379
    Abstract: A power storage module includes a cylindrical resin portion that extends in a direction in which a plurality of bipolar electrodes is stacked and that accommodates therein the plurality of the bipolar electrodes. The resin portion includes a first seal portion that has a cylindrical shape and is joined to peripheral edge portions of a plurality of electrode plate, and a second seal portion that has a cylindrical shape and is disposed outside the first seal portion in a direction that crosses the stacking direction of the bipolar electrodes. A plurality of separators is disposed such that outer peripheral ends of the separators are located between an outer peripheral end of the first seal portion and an inner peripheral end of the first seal portion.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: August 25, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi Minagata, Satoshi Kono, Kojiro Tamaru, Satoshi Hamaoka
  • Patent number: 10741819
    Abstract: A tab bundle has a first bent portion, which is at a first end in the stacking direction L of an electrode assembly in a laminated state and is bent toward a second end in the stacking direction L of the electrode assembly, and an extended portion, which protrudes from the first bent portion in the stacking direction L. The tab bundle is electrically connected to a conductive member by means of a conduction part, which is located in the extended portion. The conductive member includes: a fixed piece, which is fixed to the inner surface of a lid member and located between the extended portion and the lid member, and a connecting piece, which intersects the fixed piece and protrudes toward the electrode assembly. The tab bundle is electrically connected to the connecting piece by means of the conduction part, which is located in the extended portion.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: August 11, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki Hirose, Motoaki Okuda, Hiroyasu Nishihara, Kojiro Tamaru
  • Publication number: 20200067044
    Abstract: A power storage module 12 according to a first aspect includes: a laminated body 30 in which bipolar electrodes 32 including an electrode plate 34, a positive electrode 36, and a negative electrode 38, are laminated; a frame body 50 provided with an opening 50a communicated with a plurality of internal spaces V; and a pressure adjustment valve 60 connected to the opening 50a. The pressure adjustment valve 60 includes a base member 70 connected to the opening 50a and provided with a plurality of communication holes 74 respectively communicated with the plurality of internal spaces V, a valve body 80 arranged to shut opening ends 76a of the plurality of communication holes 74, and a cover member 90 pressing the valve body 80 against the base member 70.
    Type: Application
    Filed: February 22, 2018
    Publication date: February 27, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Satoshi HAMAOKA, Kojiro TAMARU, Hirokazu KOTAKE, Hiroki MAEDA
  • Publication number: 20200058935
    Abstract: A nickel-hydrogen battery includes a plurality of electrodes each including a current collector made of a metal, and disposed in a manner stacked in a first direction; a separator disposed between adjacent electrodes of the plurality of electrodes; a plurality of resin members disposed on peripheral portions of the plurality of electrodes to ensure a clearance between the adjacent electrodes; and a surface treatment layer covering one surface of the current collector at least in the peripheral portion of the plurality of electrode. The surface treatment layer includes a plurality of protrusions from the one surface. Widest parts of the protrusions are located above base ends thereof, and a parts of the resin members are interposed between adjacent protrusions, across a range from the tip ends to the base ends thereof.
    Type: Application
    Filed: January 24, 2018
    Publication date: February 20, 2020
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomohiro NAKAMURA, Takayuki HIROSE, Kojiro TAMARU, Yuki SUGIMOTO, Hirokuni AKIYAMA, Motoyoshi OKUMURA, Takuro KIKUCHI, Hidenori TAKAHASHI, Nobuyasu HAGA
  • Publication number: 20190334195
    Abstract: A power storage module includes a cylindrical resin portion that extends in a direction in which a plurality of bipolar electrodes is stacked and that accommodates therein the plurality of the bipolar electrodes. The resin portion includes a first seal portion that has a cylindrical shape and is joined to peripheral edge portions of a plurality of electrode plate, and a second seal portion that has a cylindrical shape and is disposed outside the first seal portion in a direction that crosses the stacking direction of the bipolar electrodes. A plurality of separators is disposed such that outer peripheral ends of the separators are located between an outer peripheral end of the first seal portion and an inner peripheral end of the first seal portion.
    Type: Application
    Filed: November 21, 2017
    Publication date: October 31, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Atsushi MINAGATA, Satoshi KONO, Kojiro TAMARU, Satoshi HAMAOKA
  • Patent number: 10439195
    Abstract: A power storage device includes a case accommodating an electrode assembly and having a lid, a current interrupting device, and an insulating member. The electrode assembly has a tab-side end face opposed to an inner face of the lid. The current interrupting device has a device end face opposed to the tab-side end face. The insulating member has an insulating end face opposed to the tab-side end face. A distance from the inner face to the device end face in a state where the current interrupting device is positioned closest to the inner face is defined as a first dimension. A distance from the inner face to the insulating end face in a state where the insulating member is positioned closest to the inner face is defined as a second dimension. The first dimension is smaller than the second dimension.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: October 8, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki Hirose, Motoaki Okuda, Hiroyasu Nishihara, Kojiro Tamaru
  • Patent number: 10320208
    Abstract: An electricity storage device includes a casing, a terminal, and a current interruption device. The terminal includes a column part and a base part. A first sealing member having an insulating property including a first sealing part sealing between the terminal and a terminal wall is provided between the terminal and the terminal wall, and surrounding an entire periphery of the column part. A first insulating member having an insulating property is disposed within a first space provided between the terminal and the terminal wall on a casing inner side relative to the first sealing part, and surrounds the entire periphery of the column part. At least one of the first sealing member and the first insulating member is disposed in the first space from an end face of the first space on a casing outer side to an end face on the casing inner side thereof.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: June 11, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kojiro Tamaru, Motoaki Okuda, Hiroyasu Nishihara, Takayuki Hirose
  • Patent number: 10069122
    Abstract: A power storage module in which rectangular power storage devices each having an electrode assembly and an electrolyte accommodated in a case are configured to be connected, wherein the power storage devices are arrayed in a predetermined array direction (a direction in which positive electrodes and negative electrodes are stacked) and bonded in an arrayed state, and thicknesses of surfaces (in particular, at least parts in contact with an adjacent member in the surfaces of the bonded sides) on bonded sides of the cases are less than thicknesses of surfaces of non-bonded sides.
    Type: Grant
    Filed: June 10, 2014
    Date of Patent: September 4, 2018
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motoaki Okuda, Hiroyasu Nishihara, Kojiro Tamaru
  • Publication number: 20180123110
    Abstract: A tab bundle has a first bent portion, which is at a first end in the stacking direction L of an electrode assembly in a laminated state and is bent toward a second end in the stacking direction L of the electrode assembly, and an extended portion, which protrudes from the first bent portion in the stacking direction L. The tab bundle is electrically connected to a conductive member by means of a conduction part, which is located in the extended portion. The conductive member includes: a fixed piece, which is fixed to the inner surface of a lid member and located between the extended portion and the lid member, and a connecting piece, which intersects the fixed piece and protrudes toward the electrode assembly. The tab bundle is electrically connected to the connecting piece by means of the conduction part, which is located in the extended portion.
    Type: Application
    Filed: February 25, 2016
    Publication date: May 3, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki HIROSE, Motoaki OKUDA, Hiroyasu NISHIHARA, Kojiro TAMARU
  • Publication number: 20180047971
    Abstract: A power storage device includes a case accommodating an electrode assembly and having a lid, a current interrupting device, and an insulating member. The electrode assembly has a tab-side end face opposed to an inner face of the lid. The current interrupting device has a device end face opposed to the tab-side end face. The insulating member has an insulating end face opposed to the tab-side end face. A distance from the inner face to the device end face in a state where the current interrupting device is positioned closest to the inner face is defined as a first dimension. A distance from the inner face to the insulating end face in a state where the insulating member is positioned closest to the inner face is defined as a second dimension. The first dimension is smaller than the second dimension.
    Type: Application
    Filed: March 8, 2016
    Publication date: February 15, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki HIROSE, Motoaki OKUDA, Hiroyasu NISHIHARA, Kojiro TAMARU
  • Patent number: 9728763
    Abstract: A current interruption device disclosed in the present specification includes: a first conductive member and a second conductive member that are facing each other; an insulating seal member disposed therebetween; and an insulating cover accommodating the first conductive member, the second conductive member, and the seal member. The seal member separates a space between the first and second conductive members into an inner space and an outer space which communicates with the space within the casing. In a plan view, the seal member is positioned in an entire area outside of contact portions of the seal member with the first and second conductive members within a range where the first and second conductive members are facing each other. The cover is disposed along outer circumferential edges of the first and second conductive members, and the seal member is in contact with the cover.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: August 8, 2017
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki Hirose, Motoaki Okuda, Hiroyasu Nishihara, Kojiro Tamaru
  • Publication number: 20170163059
    Abstract: An electricity storage device includes a casing, a terminal, and a current interruption device. The terminal includes a column part and a base part. A first sealing member having an insulating property including a first sealing part sealing between the terminal and a terminal wall is provided between the terminal and the terminal wall, and surrounding an entire periphery of the column part. A first insulating member having an insulating property is disposed within a first space provided between the terminal and the terminal wall on a casing inner side relative to the first sealing part, and surrounds the entire periphery of the column part. At least one of the first sealing member and the first insulating member is disposed in the first space from an end face of the first space on a casing outer side to an end face on the casing inner side thereof.
    Type: Application
    Filed: April 6, 2015
    Publication date: June 8, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Kojiro TAMARU, Motoaki OKUDA, Hiroyasu NISHIHARA, Takayuki HIROSE
  • Publication number: 20160315308
    Abstract: A current interruption device disclosed in the present specification includes: a first conductive member and a second conductive member that are facing each other; an insulating seal member disposed therebetween; and an insulating cover accommodating the first conductive member, the second conductive member, and the seal member. The seal member separates a space between the first and second conductive members into an inner space and an outer space which communicates with the space within the casing. In a plan view, the seal member is positioned in an entire area outside of contact portions of the seal member with the first and second conductive members within a range where the first and second conductive members are facing each other. The cover is disposed along outer circumferential edges of the first and second conductive members, and the seal member is in contact with the cover.
    Type: Application
    Filed: November 10, 2014
    Publication date: October 27, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Takayuki HIROSE, Motoaki OKUDA, Hiroyasu NISHIHARA, Kojiro TAMARU
  • Publication number: 20160285060
    Abstract: A power storage module in which rectangular power storage devices each having an electrode assembly and an electrolyte accommodated in a case are configured to be connected, wherein the power storage devices are arrayed in a predetermined array direction (a direction in which positive electrodes and negative electrodes are stacked) and bonded in an arrayed state, and thicknesses of surfaces (in particular, at least parts in contact with an adjacent member in the surfaces of the bonded sides) on bonded sides of the cases are less than thicknesses of surfaces of non-bonded sides.
    Type: Application
    Filed: June 10, 2014
    Publication date: September 29, 2016
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Motoaki OKUDA, Hiroyasu NISHIHARA, Kojiro TAMARU