Patents by Inventor Hirokuni Akiyama

Hirokuni Akiyama 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: 11960578
    Abstract: A method is provided for determining command-to-process correspondence. The method includes identifying, by the hardware processor, initial processes resulting from executions of container immutability change events for each of multiple initially mutable containers in a cluster, based on an execution time, a process identifier and a process group identifier for each of the container immutability change events. The method also includes designating, by the hardware processor, a particular external command, from among external container commands stored in a database, as having a correspondence to an initial process, responsive to the initial process matching at least one respective process resulting from executing the particular external command.
    Type: Grant
    Filed: November 3, 2022
    Date of Patent: April 16, 2024
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Hirokuni Kitahara, Yuji Watanabe, Fumiko Akiyama
  • Publication number: 20230268572
    Abstract: A power storage device includes power storage cells that are stacked in a stacking direction, and a temperature sensor configured to measure a temperature of at least one power storage cell to be measured among the power storage cells. Each of the power storage cells includes a positive electrode that includes a first current collector, and a positive electrode active material layer, a negative electrode that includes a second current collector, and a negative electrode active material layer, a separator that is arranged between the positive electrode and the negative electrode, and a sealing portion—that surrounds and seals the positive electrode active material layer and the negative electrode active material layer.
    Type: Application
    Filed: August 30, 2021
    Publication date: August 24, 2023
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI,
    Inventors: Hirokuni AKIYAMA, Ryusuke HASE, Satoshi YAMAMOTO, Tomoyuki ITO, Yuki OKAMOTO
  • Publication number: 20230170582
    Abstract: A power storage cell is provided with a positive electrode, a negative electrode, a separator, and a spacer. The positive electrode has: a first current collector; and a positive electrode active material layer provided on a one surface of the first current collector. The negative electrode has: a second current collector; and a negative electrode active material layer provided on a one surface of the second current collector. The separator has a base material layer, a first adhesive layer, and a second adhesive layer. The one surface of the first current collector is adhered to the first adhesive layer in an edge portion of the separator. The spacer is adhered to the second adhesive layer in the edge portion of the separator.
    Type: Application
    Filed: April 23, 2021
    Publication date: June 1, 2023
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Hirokuni AKIYAMA, Shinji SUZUKI, Nobukiyo ITO, Yusuke YAMASHITA, Eiji MIZUTANI
  • Publication number: 20230029819
    Abstract: A power storage device includes: a module stacked body including at least one power storage module including a plurality of stacked electrodes; and a housing constituting a first sealed space for accommodating the module stacked body, wherein the housing has a housing body including a cylindrical side wall extending along a stacking direction in the module stacked body and a plate-shaped bottom wall closing one end of the side wall and a lid being joined to the other end of the side wall and constrains the module stacked body in the stacking direction of the electrode inside the first sealed space by deforming at least a portion of the bottom wall and the lid so as to come close to each other due to an air pressure difference between the inside and outside of the first sealed space.
    Type: Application
    Filed: December 7, 2020
    Publication date: February 2, 2023
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Hirokuni AKIYAMA
  • Publication number: 20220407119
    Abstract: A power storage device includes a positive electrode and a negative electrode facing each other, a separator disposed between the positive electrode and the negative electrode, the separator being porous, and a sealing member made of a resin and sealing a space between the positive electrode and the negative electrode. The separator includes a material having a melting temperature higher than a melting temperature of a resin material of the sealing member. The separator has an edge portion sandwiched and held in the sealing member in a state where the edge portion is joined to a melted-then-solidified portion of the resin material of the sealing member.
    Type: Application
    Filed: November 12, 2020
    Publication date: December 22, 2022
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Toshio OTAGIRI, Hirokuni AKIYAMA
  • Publication number: 20220393265
    Abstract: A power storage device includes: a modular structure including at least one power storage module, the power storage module having an electrode stacked body and a sealing member, the electrode stacked body having bipolar electrodes, and the sealing member sealing a side surface of the electrode stacked body; a pair of restraint members disposed at both ends of the modular structure in the first direction to apply a restraint load to the modular structure; and a first intermediate member interposed between the restraint member and the modular structure to transmit the restraint load from the restraint member to the modular structure, wherein the first intermediate member includes a first package that is deformable according to the restraint load and a fluid that is enclosed in the first package.
    Type: Application
    Filed: October 29, 2020
    Publication date: December 8, 2022
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventor: Hirokuni AKIYAMA
  • Patent number: 10943745
    Abstract: The electric storage device includes an electrode assembly having a positive electrode and a negative electrode, a case for housing the electrode assembly, a pressure relief valve, and positive and negative electrode conductive members that are electrically connected to the respective corresponding electrodes. The case has a wall in which the pressure relief valve is disposed. At least one of the positive and negative electrode conductive members includes an interposing portion located between the inner surface of the wall and an end face of the electrode assembly facing the inner surface, and a shielding portion located closer to the end face of the electrode assembly than the interposing portion. The shielding portion covers the pressure release valve from a side of the wall where the electrode assembly is located.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: March 9, 2021
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yusuke Yamashita, Takayuki Hirose, Shinji Suzuki, Yasuaki Takenaka, Masato Ogasawara, Atsushi Minagata, Hirokuni Akiyama, Motoaki Okuda
  • 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
  • Patent number: 10862098
    Abstract: A power storage device includes an electrode assembly, a case, first and second electrode terminals, and a current interrupting mechanism. The current interrupting mechanism interrupts a current through an electrical current-carrying path when the internal pressure of the case reaches a preset pressure. The current interrupting mechanism includes a mechanism insulating portion, which insulates the first electrode terminal including the current interrupting mechanism from an end face of the electrode assembly, and a terminal insulating portion, which insulates the second electrode terminal from the end face of the electrode assembly. The projecting dimension from a wall portion to the mechanism insulating portion including the first electrode terminal is equal to the projecting dimension from the wall portion to the terminal insulating portion including the second electrode terminal.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: December 8, 2020
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomohiro Nakamura, Takayuki Hirose, Hirokuni Akiyama
  • 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
  • Patent number: 10490790
    Abstract: Provided is a battery module, which includes an array for battery cells, an elastic body disposed with respect to the array, a restraining member that restrains the array via the elastic body in an arranging direction of the battery cells, a plurality of harnesses that extend in the arranging direction and have connecting terminals of tips thereof connected to electrode terminals of the predetermined battery cells, and a binding member that binds the plurality of harnesses into a harness bundle. A binding position of the harnesses which is caused by the binding member is located at a side opposite to the elastic body relative to a connecting position between the electrode terminal and the connecting terminal, and the harness that branches off from the binding member has a flexure between the binding position and the connecting position.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: November 26, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masahiro Yamada, Hiromi Ueda, Hirokuni Akiyama
  • Patent number: 10483517
    Abstract: A bus bar assembly structure includes an electrode terminal and a plate-shaped bus bar that is assembled to the electrode terminal. The bus bar has a burr along an edge of one of openings of an insertion hole. A threaded portion of a nut has a tapered portion at an edge of one of openings of the threaded portion, and a largest diameter of the tapered portion is greater than a bore diameter of the insertion hole. A flat portion of the bus bar is held between a bolt and a nut while the burr is located within a space created by the tapered portion.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: November 19, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naoto Morisaku, Fumihiko Ishiguro, Hiromi Ueda, Hirokuni Akiyama, Takayuki Kato
  • Publication number: 20190280278
    Abstract: A bus bar assembly structure includes an electrode terminal and a plate-shaped bus bar that is assembled to the electrode terminal. The bus bar has a burr along an edge of one of openings of an insertion hole. A threaded portion of a nut has a tapered portion at an edge of one of openings of the threaded portion, and a largest diameter of the tapered portion is greater than a bore diameter of the insertion hole. A flat portion of the bus bar is held between a bolt and a nut while the burr is located within a space created by the tapered portion.
    Type: Application
    Filed: April 26, 2017
    Publication date: September 12, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Naoto MORISAKU, Fumihiko ISHIGURO, Hiromi UEDA, Hirokuni AKIYAMA, Takayuki KATO
  • Publication number: 20190115163
    Abstract: The electric storage device includes an electrode assembly having a positive electrode and a negative electrode, a case for housing the electrode assembly, a pressure relief valve, and positive and negative electrode conductive members that are electrically connected to the respective corresponding electrodes. The case has a wall in which the pressure relief valve is disposed. At least one of the positive and negative electrode conductive members includes an interposing portion located between the inner surface of the wall and an end face of the electrode assembly facing the inner surface, and a shielding portion located closer to the end face of the electrode assembly than the interposing portion. The shielding portion covers the pressure release valve from a side of the wall where the electrode assembly is located.
    Type: Application
    Filed: March 31, 2017
    Publication date: April 18, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Yusuke YAMASHITA, Takayuki HIROSE, Shinji SUZUKI, Yasuaki TAKENAKA, Masato OGASAWARA, Atsushi MINAGATA, Hirokuni AKIYAMA, Motoaki OKUDA
  • Patent number: 10249853
    Abstract: An electricity storage device includes an electrode assembly and a load applying mechanism. The load applying mechanism applies, to the electrode assembly, a load in a direction in which the positive electrode and the negative electrode are stacked in the electrode assembly. The negative electrode includes a metal foil and an active material layer that covers at least part of the metal foil and contains a carbon-based material as an active material. The density of the carbon-based material in the active material layer is 1.2 g/cm3 or higher. The degree of orientation that is defined as a ratio (I(100)/I(002)) of an X-ray diffraction intensity I(100) of a (100) plane to a diffraction intensity I(002) of a (002) plane in the active material layer is lower than or equal to 0.3. The load applied by the load applying mechanism is greater than or equal to 0.22 MPa.
    Type: Grant
    Filed: November 13, 2015
    Date of Patent: April 2, 2019
    Assignee: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Satoshi Kono, Hirokuni Akiyama
  • Publication number: 20190097191
    Abstract: Provided is a battery module, which includes an array for battery cells; an elastic body disposed with respect to the array, a restraining member that restrains the array via the elastic body in an arranging direction of the battery cells, a plurality of harnesses that extend in the arranging direction and have connecting terminals of tips thereof connected to electrode terminals of the predetermined battery cells, and a binding member that binds the plurality of harnesses into a harness bundle. A binding position of the harnesses which is caused by the binding member is located at a side opposite to the elastic body relative to a connecting position between the electrode terminal and the connecting terminal, and the harness that branches off from the binding member has a flexure between the binding position and the connecting position.
    Type: Application
    Filed: November 8, 2016
    Publication date: March 28, 2019
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Masahiro YAMADA, Hiromi UEDA, Hirokuni AKIYAMA
  • Publication number: 20180351153
    Abstract: A power storage device includes an electrode assembly, a case, first and second electrode terminals, and a current interrupting mechanism. The current interrupting mechanism interrupts a current through an electrical current-carrying path when the internal pressure of the case reaches a preset pressure. The current interrupting mechanism includes a mechanism insulating portion, which insulates the first electrode terminal including the current interrupting mechanism from an end face of the electrode assembly, and a terminal insulating portion, which insulates the second electrode terminal from the end face of the electrode assembly. The projecting dimension from a wall portion to the mechanism insulating portion including the first electrode terminal is equal to the projecting dimension from the wall portion to the terminal insulating portion including the second electrode terminal.
    Type: Application
    Filed: December 12, 2016
    Publication date: December 6, 2018
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Tomohiro NAKAMURA, Takayuki HIROSE, Hirokuni AKIYAMA
  • Patent number: 10020146
    Abstract: A current interruption device includes: a deforming plate configured to deform when the internal pressure of the casing rises above the predetermined level; a conducting plate which configures the current path; and a contact plate. The conducting plate includes a first contact portion configured to contact the contact plate. The contact plate includes a second contact portion configured to contact the first contact portion. The deforming plate includes a pressure receiving portion configured to receive the internal pressure of the casing and a contacting portion configured to contact the first contact portion. The second contact portion is configured to be separated from the conducting plate by deformation causing the contacting portion to move toward the contact plate. The deforming plate is insulated from the conducting plate and the contact plate. The conducting plate is disposed to be interleaved between the deforming plate and the contact plate.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: July 10, 2018
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Eagle Industry Co., Ltd.
    Inventors: Motoaki Okuda, Satoshi Umemura, Takayuki Kato, Hiroyasu Nishihara, Atsushi Minagata, Hirokuni Akiyama, Toshio Odagiri, Takayuki Hirose, Yoshihiro Ogawa, Toshiaki Iwa
  • Patent number: 9876259
    Abstract: A current interruption device includes a deforming plate, a contact plate and a conducting plate which configure a current path. The deforming plate includes one surface on an opposite side from the contact plate facing a first space, a pressure of which is retained to a same pressure as the internal pressure of the casing and the other surface opposed to the contact plate facing a second space, a pressure of which is retained to a same pressure as an external pressure of the casing. When the internal pressure rises above the predetermined level, the second contact portion is separated from the conducting plate by deformation of the deforming plate toward the contacting plate.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: January 23, 2018
    Assignees: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI, Eagle Industry Co., Ltd.
    Inventors: Takayuki Hirose, Hirokuni Akiyama, Motoaki Okuda, Atsushi Minagata, Hiroyasu Nishihara, Shimpei Mune, Toshiaki Iwa, Yoshihiro Ogawa, Makoto Mitsuyasu, Norimitsu Akiyoshi
  • Publication number: 20170309873
    Abstract: An electricity storage device includes an electrode assembly and a load applying mechanism. The load applying mechanism applies, to the electrode assembly, a load in a direction in which the positive electrode and the negative electrode are stacked in the electrode assembly. The negative electrode includes a metal foil and an active material layer that covers at least part of the metal foil and contains a carbon-based material as an active material. The density of the carbon-based material in the active material layer is 1.2 g/cm3 or higher. The degree of orientation that is defined as a ratio (I(100)/I(002)) of an X-ray diffraction intensity I(100) of a (100) plane to a diffraction intensity I(002) of a (002) plane in the active material layer is lower than or equal to 0.3. The load applied by the load applying mechanism is greater than or equal to 0.22 MPa.
    Type: Application
    Filed: November 13, 2015
    Publication date: October 26, 2017
    Applicant: KABUSHIKI KAISHA TOYOTA JIDOSHOKKI
    Inventors: Satoshi KONO, Hirokuni AKIYAMA