Patents by Inventor Masayuki Nakai

Masayuki Nakai 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: 11942176
    Abstract: A semiconductor memory device has a plastic package including an inductor, a first memory chip including a booster circuit that boosts a voltage from a first voltage to a second voltage using the inductor, and a second memory chip having a terminal supplied with the second voltage from the first memory chip.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: March 26, 2024
    Assignee: Kioxia Corporation
    Inventors: Tomoya Sanuki, Xu Li, Masayuki Miura, Takayuki Miyazaki, Toshio Fujisawa, Hiroto Nakai, Hideko Mukaida, Mie Matsuo
  • Patent number: 11925930
    Abstract: In an apparatus, a gas containing CH4 and CO2 is supplied from a first supply unit to a synthetic gas production unit which generates a synthetic gas containing CO and H2 while heating a first catalytic structure; the synthetic gas is supplied to a gas production unit which generates a lower olefin-containing gas including propylene while heating a second catalytic structure; and a detection unit detects propylene discharged from the gas production unit. The first catalytic structure includes first supports having a porous structure and a first metal fine particle that is present in first channels of the first supports. The second catalyst structure includes second supports having a porous structure and a second metal fine particle in the second supports. The second supports have a second channels, a portion of which have an average inner diameter of 0.95 nm or less.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: March 12, 2024
    Assignee: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yuichiro Banba, Kaori Sekine, Yukako Nakai, Mai Nishii, Masayuki Fukushima, Sadahiro Kato, Takao Masuda, Yuta Nakasaka, Takuya Yoshikawa
  • Publication number: 20240069119
    Abstract: A first voltage detection device (30) detects a voltage of a lead portion (150) folded back between different battery cells (100). The first voltage detection device (30) includes a first voltage detection portion (410), a first voltage detection line (420) electrically connected to the first voltage detection portion (410), and a first holding body (300) holding the first voltage detection portion (410) and the first voltage detection line (420).
    Type: Application
    Filed: January 12, 2022
    Publication date: February 29, 2024
    Inventors: Takami IZAWA, Masayuki NAKAI, Yasuhiro YANAGIHARA, Ryuichi AMAGAI, Liping CUI
  • Publication number: 20230344090
    Abstract: Provided is a battery module configured so that connection among tabs and a bus bar stacked on each other is properly made. The battery module includes: multiple battery cells 10 each of which has tabs 101, 102; bus bars 152, 153 electrically connecting the battery cells to each other; and an electrical insulating bus bar holder 150 holding the bus bars 152, 153 such that the bus bars 152, 153 are arranged apart from each other in parallel. The bus bar holder 150 has, in regions adjacent to the bus bars 152, 153, slit openings 156b to 156e through which the tabs 101, 102 are drawn. The bus bars 152, 153 include plate-shaped tab connection portions standing on an outer peripheral surface of the bus bar holder 150 and joined to the tabs 101, 102.
    Type: Application
    Filed: December 8, 2021
    Publication date: October 26, 2023
    Inventors: Takami IZAWA, Yasuhiro YANAGIHARA, Masayuki NAKAI, Yui IGARASHI, Hideo SAITO
  • Publication number: 20230335829
    Abstract: Provided is a battery module configured so that cooling performance can be improved. The battery module includes multiple battery cells 10 stacked on each other, a spacer 12 provided at an end portion of each battery cell 10, and heat transfer plates 20 each of which has a heat absorption portion 20a arranged between the multiple battery cells 10 stacked on each other to absorb heat from the battery cells 10 and a heat dissipation portion 20b dissipating the heat absorbed by the heat absorption portion 20a to the outside. The heat dissipation portion 20b is bent relative to the heat absorption portion 20a, and is exposed through between the battery cells 10 to contact the spacer 12. The spacer 12 includes contact portions 126 having contact surfaces 260 contacting the heat dissipation portion 20b, and a positioning portion 127a having a surface 270 facing a direction opposite to that of the contact surface 260 and defining the position of the spacer 12.
    Type: Application
    Filed: October 21, 2021
    Publication date: October 19, 2023
    Inventors: Yasuhiro YANAGIHARA, Masayuki NAKAI
  • Publication number: 20230102106
    Abstract: A battery module includes a battery cell, a positive electrode lead or negative electrode lead provided in the battery cell, a first conductor electrically connected to the battery cell, at least a portion of the first conductor being functioning as a fuse above the positive electrode lead or the negative electrode lead, and a first base, at least a portion of the first base being located between the positive electrode lead or negative electrode lead, and the fuse.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Lokesh Yadav BATTULA, Ryo SAKAMOTO, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA
  • Publication number: 20230100270
    Abstract: A first voltage detection device includes a first holding body, a first voltage detection portion held by the first holding body, and a first conductor attached to the first holding body, at least a portion of the conductor being functioning as a fuse.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Dai MONNO, Ryuichi AMAGAI, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA
  • Publication number: 20230095455
    Abstract: A first voltage detection device includes a plurality of first voltage detection portions connected to a plurality of lead portions of a plurality of battery cells, a first holding body holding the plurality of first voltage detection portions, and an insulator provided at the first holding body, at least a portion of the insulator being located between the different lead portions.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Takami IZAWA, Ryuichi AMAGAI, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA
  • Publication number: 20230100503
    Abstract: A first fuse device includes a first conductor, at least a portion of the conductor being functioning as a fuse, and a first wiring electrically connected to the first conductor. At least a portion of the first wiring passes through a first space of the first conductor, the first space being defining the fuse.
    Type: Application
    Filed: September 26, 2022
    Publication date: March 30, 2023
    Applicant: ENVISION AESC JAPAN LTD.
    Inventors: Takami IZAWA, Masayuki NAKAI, Shinkichi TOYOSAKI, Yasuhiro YANAGIHARA, Ryo SAKAMOTO, Ryuichi AMAGAI
  • Patent number: 11128006
    Abstract: A spacer (first spacer 114) has an insulating property, is used in a battery pack 100, obtained by electrically interconnecting unit cells 110 that are stacked one atop another, by means of a bus bar 132 along the stacking direction (Z direction) of the unit cells, each having a cell body 110H, which includes a power-generating element 111 and is formed in a flat shape, and an electrode tab 112, which is drawn out from the cell body 110H and whose distal end portion 112d is folded along the thickness direction of the cell body 110H; and is provided between each of the unit cells. The first spacer has an abutting portion 114h, a recessed portion 114i, and a communicating portion 114j. The abutting portion abuts the distal end portion of the electrode tab along the stacking direction of the unit cells. The recessed portion is recessed in a direction intersecting the stacking direction of the unit cells so as to be separated from the distal end portion of the electrode tab.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: September 21, 2021
    Assignee: Envision AESC Japan Ltd.
    Inventors: Yasuhiro Yanagihara, Masayuki Nakai
  • Patent number: 11050107
    Abstract: A method for assembling a battery pack having a cell group includes stacking the plurality of the unit cells such that distal end portions of the electrode tabs of the unit cells are bent along a stacking direction, disposing a pair of first cover members both ends of the unit cells in the stacking direction, disposing a pair of second cover members on both ends of the unit cells in a direction that intersects with the stacking direction, welding the first and second cover members while the cell group is pressurized using the first cover members. The welding of the first cover members and the second cover members is performed prior to electrically connecting the unit cells by a bus bar. The method further includes laser-welding the bus bar to distal end portions of the electrode tabs after the first cover members and the second cover members are welded.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: June 29, 2021
    Assignee: Envision AESC Japan Ltd.
    Inventors: Manabu Fukuoka, Masayuki Nakai, Masahiro Nakamoto, Yui Suzuki
  • Publication number: 20210043981
    Abstract: A battery module includes a cell stack in which a plurality of plate-shaped cells is stacked such that each main surface, which is a surface of each of the plate-shaped cells in a cell thickness direction, faces one another.
    Type: Application
    Filed: March 30, 2018
    Publication date: February 11, 2021
    Applicant: Envision AESC Japan Ltd.
    Inventors: Manabu FUKUOKA, Masayuki NAKAI, Gen TAKAYAMA, Yuta MOTOHASHI, Fumio KISHIDA, Masahiro NAKAMOTO
  • Publication number: 20200381685
    Abstract: A spacer (first spacer 114) has an insulating property, is used in a battery pack 100, obtained by electrically interconnecting unit cells 110 that are stacked one atop another, by means of a bus bar 132 along the stacking direction (Z direction) of the unit cells, each having a cell body 110H, which includes a power-generating element 111 and is formed in a flat shape, and an electrode tab 112, which is drawn out from the cell body 110H and whose distal end portion 112d is folded along the thickness direction of the cell body 110H; and is provided between each of the unit cells. The first spacer has an abutting portion 114h, a recessed portion 114i, and a communicating portion 114j. The abutting portion abuts the distal end portion of the electrode tab along the stacking direction of the unit cells. The recessed portion is recessed in a direction intersecting the stacking direction of the unit cells so as to be separated from the distal end portion of the electrode tab.
    Type: Application
    Filed: October 27, 2017
    Publication date: December 3, 2020
    Inventors: Yasuhiro YANAGIHARA, Masayuki NAKAI
  • Patent number: 10804505
    Abstract: A battery pack includes a cell group, a bus bar and a terminal member. The cell group includes a plurality of unit cells stacked in a thickness direction. Each of the unit cells includes a battery main body having a power generation element and a flat shape, and an electrode tab protruding out from the battery main body and arranged along a stacking direction. The bus bar is joined to the electrode tabs and electrically connects the electrode tabs. The terminal member is joined to the bus bar to transfer input and output of electric power in the cell group. The terminal member is joined to the bus bar at a terminal joining position that is spaced away from a joining position between the bus bar and the electrode tabs when viewing a surface on which the electrode tabs are arranged from a direction that is orthogonal to the surface.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: October 13, 2020
    Assignee: Envision AESC Japan Ltd.
    Inventors: Masayuki Nakai, Yasuhiro Yanagihara
  • Patent number: 10622603
    Abstract: A battery pack includes battery modules and a base member on which the battery modules are mounted. The battery modules include a plurality of unit cells are stacked in a thickness direction, have a flat shape and positive and negative terminals for transferring input and output of electric power. The terminals are disposed on an opposite side of the base member side in the battery module. The unit cells include a cell body that includes a power generation element and an electrode tab. The battery module includes a pair of first cover members in the stacking direction and a pair of second cover members in a direction that intersects with the stacking direction and that intersects with a direction in which the electrode tab extends. The second cover members are joined to the first cover members while the stacked unit cells are pressurized in the stacking direction.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: April 14, 2020
    Assignee: Envision AESC Japan Ltd.
    Inventors: Masayuki Nakai, Yasuhiro Yanagihara, Manabu Fukuoka
  • Patent number: 10483519
    Abstract: A battery pack has a cell group and a bus bar. The cell group is stacking a plurality of unit cells in a thickness direction. The unit cells each includes a cell body having a power generation element and a flat shape, and an electrode tab protruding out from the cell body. The electrode tabs have distal end portions bent in a stacking direction of the unit cells. The flat plate shape bus bar connects the distal end portions of the electrode tabs of the unit cells while facing the distal end portions, and electrically connects the electrode tabs of at least two of the unit cells with each other.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 19, 2019
    Assignee: Envision AESC Japan Ltd.
    Inventors: Takao Iwasaki, Yasuhiro Yanagihara, Masayuki Nakai, Masahiro Nakamoto, Yusuke Tsuji, Manato Itabashi
  • Patent number: 10418602
    Abstract: A battery pack includes a cell group, a spacer, a plurality of bus bars, and a bus bar holder. The cell group includes stacked unit cells, each including a cell body having a power generation element and an electrode tab having distal end portions bent along the stacking direction. The spacer is disposed between adjacent electrode tabs. The bus bars electrically connect the electrode tabs to each other. The bus bar holder that holds the bus bars. The bus bar holder includes a restricting member disposed between adjacent electrode tabs, and extends along the stacking direction to restrict the electrode tabs by sandwiching the electrode tabs with the spacer. Portions of the electrode tabs are welded to a surface of the bus bars facing the unit cells when the stacking direction positions of the portions of the electrode tabs are restricted by the restricting member and the spacer.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: September 17, 2019
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Yasuhiro Yanagihara, Masayuki Nakai, Manato Itabashi, Yui Suzuki, Masahiro Nakamoto
  • Publication number: 20180309110
    Abstract: A battery pack has a cell group and a bus bar. The cell group is stacking a plurality of unit cells in a thickness direction. The unit cells each includes a cell body having a power generation element and a flat shape, and an electrode tab protruding out from the cell body. The electrode tabs have distal end portions bent in a stacking direction of the unit cells. The flat plate shape bus bar connects the distal end portions of the electrode tabs of the unit cells while facing the distal end portions, and electrically connects the electrode tabs of at least two of the unit cells with each other.
    Type: Application
    Filed: October 22, 2015
    Publication date: October 25, 2018
    Inventors: Takao IWASAKI, Yasuhiro YANAGIHARA, Masayuki NAKAI, Masahiro NAKAMOTO, Yusuke TSUJI, Manato ITABASHI
  • Publication number: 20180309101
    Abstract: A battery pack includes battery modules and a base member on which the battery modules are mounted. The battery modules include a plurality of unit cells are stacked in a thickness direction, have a flat shape and positive and negative terminals for transferring input and output of electric power. The terminals are disposed on an opposite side of the base member side in the battery module. The unit cells include a cell body that includes a power generation element and an electrode tab. The battery module includes a pair of first cover members in the stacking direction and a pair of second cover members in a direction that intersects with the stacking direction and that intersects with a direction in which the electrode tab extends. The second cover members are joined to the first cover members while the stacked unit cells are pressurized in the stacking direction.
    Type: Application
    Filed: October 22, 2015
    Publication date: October 25, 2018
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Masayuki NAKAI, Yasuhiro YANAGIHARA, Manabu FUKUOKA
  • Publication number: 20180301667
    Abstract: A battery pack includes a cell group, a bus bar and a terminal member. The cell group includes a plurality of unit cells stacked in a thickness direction. Each of the unit cells includes a battery main body having a power generation element and a flat shape, and an electrode tab protruding out from the battery main body and arranged along a stacking direction. The bus bar is joined to the electrode tabs and electrically connects the electrode tabs. The terminal member is joined to the bus bar to transfer input and output of electric power in the cell group. The terminal member is joined to the bus bar at a terminal joining position that is spaced away from a joining position between the bus bar and the electrode tabs when viewing a surface on which the electrode tabs are arranged from a direction that is orthogonal to the surface.
    Type: Application
    Filed: October 22, 2015
    Publication date: October 18, 2018
    Applicant: Nissan Motor Co., Ltd.
    Inventors: Masayuki NAKAI, Yasuhiro YANAGIHARA