Patents by Inventor Kiyoaki Hayashi

Kiyoaki Hayashi 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: 10950879
    Abstract: A redox flow battery includes a positive electrolyte tank container which houses a positive electrolyte tank for storing a positive electrolyte; a negative electrolyte tank container which houses a negative electrolyte tank for storing a negative electrolyte; and a battery container which houses a battery cell including a positive electrode, a negative electrode, and a membrane, a positive electrolyte circulation mechanism configured to supply and circulate the positive electrolyte to the battery cell, and a negative electrolyte circulation mechanism configured to supply and circulate the negative electrolyte to the battery cell.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: March 16, 2021
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Atsuo Ikeuchi, Kiyoaki Hayashi
  • Patent number: 10818939
    Abstract: Provided is a redox flow battery in which damage is unlikely to occur in a membrane. A redox flow battery includes a pair of adjacent cell frames, each cell frame including a frame body in which a flow channel for an electrolyte is formed, and a bipolar plate disposed inside the frame body; a positive electrode and a negative electrode disposed so as to face each other between the bipolar plates of the pair of cell frames; a membrane interposed between the positive electrode and the negative electrode; a protection plate which covers the flow channel and presses edge portions of the positive electrode or the negative electrode toward the bipolar plate; and a membrane protection structure which prevents the membrane from being broken by contact between the protection plate and the membrane.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: October 27, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kosuke Shiraki, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi, Kiyoaki Moriuchi
  • Patent number: 10790530
    Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: September 29, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Kanno, Katsuya Yamanishi, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Moriuchi, Hideyuki Yamaguchi, Hayato Fujita, Kousuke Shiraki, Kiyoaki Hayashi
  • Patent number: 10749202
    Abstract: A redox flow battery includes a cell frame having a frame body in which a sealing groove is formed and a sealing member disposed in the sealing groove. The redox flow battery includes an adhesive that fixes the sealing member to the sealing groove, and a type A durometer hardness of the adhesive after curing is 100 or less. Preferably, the type A durometer hardness of the adhesive after curing is less than or equal to a type A durometer hardness of the sealing member.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: August 18, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kousuke Shiraki, Takashi Kanno, Haruhisa Toyoda, Takefumi Ito, Masahiro Kuwabara, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi
  • Publication number: 20200259198
    Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.
    Type: Application
    Filed: January 17, 2019
    Publication date: August 13, 2020
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Kanno, Katsuya Yamanishi, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Moriuchi, Hideyuki Yamaguchi, Hayato Fujita, Kousuke Shiraki, Kiyoaki Hayashi
  • Publication number: 20200112044
    Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.
    Type: Application
    Filed: January 17, 2019
    Publication date: April 9, 2020
    Applicant: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Kanno, Katsuya Yamanishi, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Moriuchi, Hideyuki Yamaguchi, Hayato Fujita, Kousuke Shiraki, Kiyoaki Hayashi
  • Patent number: 10593964
    Abstract: A bipolar plate is a bipolar plate for a battery, the bipolar plate having a positive electrode disposed on a first surface side thereof and a negative electrode disposed on a second surface side thereof, wherein at least one of the first surface and the second surface is provided with a flow path through which an electrolyte flows. The flow path includes an introduction port for the electrolyte, a discharge port for the electrolyte, and a groove section which is located between the introduction port and the discharge port and guides the electrolyte to a predetermined route. The groove section includes a plurality of vertical groove sections which extend in a vertical direction and are arranged in parallel in a direction orthogonal to the vertical direction when the bipolar plate is placed at a predetermined position in the battery.
    Type: Grant
    Filed: June 16, 2016
    Date of Patent: March 17, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hayato Fujita, Hideyuki Yamaguchi, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Hayashi
  • Patent number: 10566644
    Abstract: Provided are a battery cell that can be produced efficiently. A frame body of each cell frame of a battery cell includes an inner peripheral recessed portion formed by reducing a thickness of a peripheral portion that surrounds an entire perimeter of the penetrating window so that the peripheral portion has a smaller thickness than other portions of the frame body. A bipolar plate of the battery cell includes an outer peripheral engaging portion that engages with the inner peripheral recessed portion, the outer peripheral engaging portion being a portion having a particular width and extending throughout an entire outer periphery of the bipolar plate.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: February 18, 2020
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Hideyuki Yamaguchi, Katsuya Yamanishi, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Moriuchi, Kiyoaki Hayashi, Hayato Fujita, Kousuke Shiraki
  • Publication number: 20190237781
    Abstract: A redox flow battery includes a positive electrolyte tank container which houses a positive electrolyte tank for storing a positive electrolyte; a negative electrolyte tank container which houses a negative electrolyte tank for storing a negative electrolyte; and a battery container which houses a battery cell including a positive electrode, a negative electrode, and a membrane, a positive electrolyte circulation mechanism configured to supply and circulate the positive electrolyte to the battery cell, and a negative electrolyte circulation mechanism configured to supply and circulate the negative electrolyte to the battery cell.
    Type: Application
    Filed: November 2, 2017
    Publication date: August 1, 2019
    Inventors: Atsuo Ikeuchi, Kiyoaki Hayashi
  • Publication number: 20190237793
    Abstract: A redox flow battery includes a stack group including a plurality of cell stacks that are arranged side by side in a horizontal direction, and a heat exchanger that is disposed above the stack group and that cools an electrolyte supplied to each of the cell stacks.
    Type: Application
    Filed: November 6, 2017
    Publication date: August 1, 2019
    Inventors: Atsuo Ikeuchi, Kiyoaki Hayashi
  • Publication number: 20190157699
    Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.
    Type: Application
    Filed: January 17, 2019
    Publication date: May 23, 2019
    Inventors: Takashi KANNO, Katsuya YAMANISHI, Takefumi ITO, Masahiro KUWABARA, Kiyoaki MORIUCHI, Hideyuki YAMAGUCHI, Hayato FUJITA, Kousuke SHIRAKI, Kiyoaki HAYASHI
  • Patent number: 10230123
    Abstract: The battery cell for a flow battery includes a cell frame including a frame including a through-window and a manifold serving as an electrolyte flow path, and a bipolar plate blocking the through-window; a positive electrode disposed on one surface side of the bipolar plate; and a negative electrode disposed on another surface side of the bipolar plate. In this battery cell, in the frame, a thickness of a portion in which the manifold is formed is defined as Ft; in the bipolar plate, a thickness of a portion blocking the through-window is defined as Bt; in the positive electrode, a thickness of a portion facing the bipolar plate is defined as Pt; in the negative electrode, a thickness of a portion facing the bipolar plate is defined as Nt; and these thicknesses satisfy Ft?4 mm, Bt?Ft?3.0 mm, Pt?1.5 mm, and Nt?1.5 mm.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: March 12, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takashi Kanno, Katsuya Yamanishi, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Moriuchi, Hideyuki Yamaguchi, Hayato Fujita, Kousuke Shiraki, Kiyoaki Hayashi
  • Publication number: 20190067726
    Abstract: A redox flow battery includes a cell frame having a frame body in which a sealing groove is formed and a sealing member disposed in the sealing groove. The redox flow battery includes an adhesive that fixes the sealing member to the sealing groove, and a type A durometer hardness of the adhesive after curing is 100 or less. Preferably, the type A durometer hardness of the adhesive after curing is less than or equal to a type A durometer hardness of the sealing member.
    Type: Application
    Filed: January 25, 2017
    Publication date: February 28, 2019
    Inventors: Kousuke Shiraki, Takashi Kanno, Haruhisa Toyoda, Takefumi Ito, Masahiro Kuwabara, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi
  • Publication number: 20190067711
    Abstract: Provided is a redox flow battery in which damage is unlikely to occur in a membrane. A redox flow battery includes a pair of adjacent cell frames, each cell frame including a frame body in which a flow channel for an electrolyte is formed, and a bipolar plate disposed inside the frame body; a positive electrode and a negative electrode disposed so as to face each other between the bipolar plates of the pair of cell frames; a membrane interposed between the positive electrode and the negative electrode; a protection plate which covers the flow channel and presses edge portions of the positive electrode or the negative electrode toward the bipolar plate; and a membrane protection structure which prevents the membrane from being broken by contact between the protection plate and the membrane.
    Type: Application
    Filed: February 3, 2016
    Publication date: February 28, 2019
    Inventors: Kosuke Shiraki, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi, Kiyoaki Moriuchi
  • Patent number: 10211467
    Abstract: A cell frame for a redox flow battery comprises: a bipolar plate; and a frame body provided at an outer periphery of the bipolar plate, the frame body including a manifold which penetrates through front and back surfaces of the frame body and through which an electrolyte flows, and at least one slit being formed on the front surface of the frame body and forming a channel of the electrolyte between the manifold and the bipolar plate, a cross sectional shape of the slit, in a longitudinal direction of the slit, having a width w and a depth h, the width w and the depth h satisfying (A) w?3 mm and (B) 1/8<h/w<1.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 19, 2019
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takefumi Ito, Takashi Kanno, Masahiro Kuwabara, Katsuya Yamanishi, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi, Kousuke Shiraki, Kiyoaki Moriuchi
  • Patent number: 10193178
    Abstract: A frame body for a redox flow battery is provided with a window. The expressions A>C, B>D, and (B/A)?0.2 are satisfied, where A represents the length of a long side of a rectangle that envelops the window, B represents the width of a horizontal frame corresponding to the long side, C represents the length of a short side of the rectangle, and D represents the width of a vertical frame corresponding to the short side.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: January 29, 2019
    Assignee: Sumitomo Electric Inductries, Ltd.
    Inventors: Masahiro Kuwabara, Haruhisa Toyoda, Takashi Kanno, Takefumi Ito, Hideyuki Yamaguchi, Hayato Fujita, Kousuke Shiraki, Kiyoaki Hayashi
  • Publication number: 20190027770
    Abstract: Provided are a redox flow battery having a low internal resistance, an electrode used in a redox flow battery, and an electrode characteristic evaluation method with which a characteristic of an electrode can be simply and accurately evaluated. The redox flow battery includes at least one pair of electrodes in a stacked manner, the electrodes including a positive electrode and a negative electrode to which an electrolyte is supplied and in which a battery reaction is performed.
    Type: Application
    Filed: January 7, 2016
    Publication date: January 24, 2019
    Inventors: Kosuke Shiraki, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi, Kiyoaki Moriuchi
  • Patent number: 10158127
    Abstract: A cell frame for a redox flow battery comprises: a bipolar plate; and a frame body provided at an outer periphery of the bipolar plate, the frame body including a manifold which penetrates through front and back surfaces of the frame body and through which an electrolyte flows, and at least one slit being formed on the front surface of the frame body and forming a channel of the electrolyte between the manifold and the bipolar plate, a cross sectional shape of the slit, in a longitudinal direction of the slit, having a width w and a depth h, the width w and the depth h satisfying (A) w?3 mm and (B) 1/8<h/w<1.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: December 18, 2018
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Takefumi Ito, Takashi Kanno, Masahiro Kuwabara, Katsuya Yamanishi, Hideyuki Yamaguchi, Hayato Fujita, Kiyoaki Hayashi, Kousuke Shiraki, Kiyoaki Moriuchi
  • Publication number: 20180277858
    Abstract: A bipolar plate for a battery has two surfaces on which a positive electrode and a negative electrode are to be disposed respectively. At least one of the surfaces of the bipolar plate is provided with a plurality of groove sections through which an electrolyte flows and a ridge section located between the groove sections that are adjacent to each other. The groove sections include an introduction groove section and a discharge groove section that are not in communication with each other. The ridge section includes an uneven portion configured to suppress sliding of the positive electrode or the negative electrode in a direction in which the adjacent groove sections are arranged in parallel. The uneven portion includes a rough surface provided on at least a part of a surface of the ridge section and having an arithmetical mean roughness Ra of 0.1 ?m to 10 ?m inclusive.
    Type: Application
    Filed: March 16, 2017
    Publication date: September 27, 2018
    Inventors: Hayato Fujita, Masahiro Kuwabara, Takashi Kanno, Haruhisa Toyoda, Hideyuki Yamaguchi, Kousuke Shiraki, Kiyoaki Hayashi, Takefumi Ito
  • Publication number: 20180190999
    Abstract: A bipolar plate is a bipolar plate for a battery, the bipolar plate having a positive electrode disposed on a first surface side thereof and a negative electrode disposed on a second surface side thereof, wherein at least one of the first surface and the second surface is provided with a flow path through which an electrolyte flows. The flow path includes an introduction port for the electrolyte, a discharge port for the electrolyte, and a groove section which is located between the introduction port and the discharge port and guides the electrolyte to a predetermined route. The groove section includes a plurality of vertical groove sections which extend in a vertical direction and are arranged in parallel in a direction orthogonal to the vertical direction when the bipolar plate is placed at a predetermined position in the battery.
    Type: Application
    Filed: June 16, 2016
    Publication date: July 5, 2018
    Inventors: Hayato Fujita, Hideyuki Yamaguchi, Takashi Kanno, Takefumi Ito, Masahiro Kuwabara, Kiyoaki Hayashi