Patents by Inventor Nobuyasu Negishi

Nobuyasu Negishi 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: 20210408540
    Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer formed on the current collector. The active material-containing layer contains a lithium nickel cobalt manganese composite oxide and a lithium cobalt composite oxide. Pore size distribution obtained by mercury intrusion porosimetry for the active material-containing layer has a first peak top indicating a highest intensity I1 within a pore size range of from 0.1 ?m to 1 ?m and a second peak top indicating an intensity I2 which is a second highest intensity after the highest intensity I1 within the pore size range of from 0.1 ?m to 1 ?m. A pore size at the first peak top is smaller than a pore size at the second peak top.
    Type: Application
    Filed: September 14, 2021
    Publication date: December 30, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Dai YAMAMOTO, Tetsuro KANO, Masanori TANAKA, Yuki WATANABE, Nobuyasu NEGISHI
  • Publication number: 20210167451
    Abstract: According to one embodiment, a lid assembly includes a plate-shaped lid, a pair of leads, an insulating member, and a valve. The insulating member is provided between the lid and base portions of the pair of leads. The insulating member includes opposing faces facing an electrode group, a pair of support face groups protruding with respect to the opposing faces, and an intermediate region provided between the pair of support face groups and having an opening facing the lid. The valve is adjacent to the opening of the intermediate region, and is configured to open when a pressure on a side where the leads and the insulating member are disposed reaching a predetermined pressure. A maximum possible opening area with which the valve is configured to open is equal to or smaller than an area of the opposing faces.
    Type: Application
    Filed: February 4, 2021
    Publication date: June 3, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya SHINODA, Nobuyasu NEGISHI, Genki YAMAGISHI
  • Publication number: 20200274114
    Abstract: A battery includes a casing, a terminal, an electrode assembly, a collector, and a joint. The terminal is supported by the casing. The electrode assembly is housed in the casing and includes an electrode pair of a sheet form having different polarities from each other and a separator located between the electrode pair, the electrode pair and the separator laminated and wound around an axis. The collector is located at an axial end of the electrode assembly, electrically connected to the terminal, and includes a plurality of collector tabs. The collector tabs are part of one of the electrodes and laminated on each other with no other electrode and the separator placed in-between. The joint joins fringes of the laminated collector tabs.
    Type: Application
    Filed: October 29, 2018
    Publication date: August 27, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hirokiyo MAMYODA, Masahiro MURATA, Naoki IWAMURA, Nobuyasu NEGISHI, Takashi OBARA, Tetsuo SAKAI
  • Publication number: 20200251787
    Abstract: A battery includes a casing, a terminal, an electrode assembly, a collector, and a joint. The joint joins laminated fringes of the electrode assembly. The collector includes a cut part including the fringes. The cut part includes the joint. The electrode assembly includes a turnback pair formed by folding back the electrodes from one of an extension pair to the other. The collector includes a connection electrically connected to the terminal, including part of the extension pair, and not including at least one of the turnback pair.
    Type: Application
    Filed: October 29, 2018
    Publication date: August 6, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya SHINODA, Masahiro MURATA, Hirokiyo MAMYODA, Nobuyasu NEGISHI
  • Publication number: 20200203678
    Abstract: A square secondary battery of an embodiment includes an outer can formed in a shape of a bottomed cylinder having a cross-sectional shape of a substantially quadrangular shape, the outer can having an opening, a power generation element contained in the outer can, and a lid having a positive electrode terminal and a negative electrode terminal, the lid covering the opening of the outer can. Two or more convex portions exist on each of one or more surfaces of a side surface of an outer surface of the outer can, a bottom surface of the outer surface of the outer can, and a surface having the positive electrode terminal and the negative electrode terminal of an outer surface of the lid.
    Type: Application
    Filed: March 3, 2020
    Publication date: June 25, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tatsuya SHINODA, Nobuyasu Negishi
  • Patent number: 10559806
    Abstract: According to one embodiment, a battery is provided. The battery includes an electrode body, a lead, a container member, and a terminal. The container member includes a main part and a terminal-connecting part adjacent to the main part. The electrode body is housed in the main part of the container member. The lead is electrically connected to the electrode body. The lead is housed in the terminal-connecting part of the container member. The terminal is electrically connected to the lead. The terminal is provided on the terminal-connecting part. A thickness of the main part of the container member is larger than a thickness of the terminal-connecting part of the container member.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: February 11, 2020
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Nobuyasu Negishi, Tatsuya Hashimoto, Naoki Iwamura, Tatsuya Shinoda, Koichi Takeshita, Yasuaki Murashi
  • Patent number: 10522812
    Abstract: According to one embodiment, a battery is provided. The battery includes an electrode body, a lead, a container member, and a terminal. The container member includes a main part and a terminal-connecting part adjacent to the main part. The electrode body is housed in the main part of the container member. The lead is electrically connected to the electrode body. The lead is housed in the terminal-connecting part of the container member. The terminal is electrically connected to the lead. The terminal is provided on the terminal-connecting part. A thickness of the main part of the container member is larger than a thickness of the terminal-connecting part of the container member.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: December 31, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Nobuyasu Negishi, Tatsuya Hashimoto, Naoki Iwamura, Tatsuya Shinoda, Koichi Takeshita, Yasuaki Murashi
  • Patent number: 10505233
    Abstract: According to an embodiment, an electrode is provided. The electrode group includes a stack. The stack includes a positive electrode, a negative electrode or negative electrodes, and separator. Each negative electrode includes a negative electrode current collector and a negative electrode layer provided on the negative electrode current collector. The electrode group satisfies following relational formulae (I) to (III): 10?a1/b1?16 (I); 0.7?D1/E1?1.4 (II); E1?85 (III). Here, the a1 [mm] is a thickness of the stack. The b1 [mm] is a thickness of the negative electrode current collector, or is a total thickness of the negative electrode current collectors. The D1 [?m] is a thickness of the positive electrode. The E1 [?m] is a thickness of the negative electrode.
    Type: Grant
    Filed: March 8, 2017
    Date of Patent: December 10, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuaki Murashi, Nobuyasu Negishi, Tatsuya Shinoda, Koichi Takeshita, Koichi Kawamura, Tatsuya Hashimoto
  • Publication number: 20190372154
    Abstract: The nonaqueous electrolyte battery according to an embodiment includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The positive electrode contains a lithium cobalt composite oxide. The negative electrode contains a lithium titanium composite oxide. The positive electrode and the negative electrode satisfy a formula (1): 1.25?p/n?1.6. Here, p is a capacity of the positive electrode, and n is a capacity of the negative electrode. The nonaqueous electrolyte contains propionate ester. The nonaqueous electrolyte battery satisfies a formula (2): 13<w/(p/n)?40. w is the content of propionate ester in the nonaqueous electrolyte. Here, 20% by weight?w<64% by weight, with respect to the weight of the nonaqueous electrolyte.
    Type: Application
    Filed: August 12, 2019
    Publication date: December 5, 2019
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Dai YAMAMOTO, Yuki WATANABE, Nobuyasu NEGISHI, Ryo HARA
  • Patent number: 10468679
    Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material layer including a lithium nickel cobalt manganese composite oxide. The negative electrode includes a negative electrode active material layer including a spinel type lithium titanate. The nonaqueous electrolyte has an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25° C. A capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8. A thickness ratio Tp/Tn is within a range of not less than 1.05 and less than 1.3. A ratio Pp/Pn is within a range of not less than 0.55 and less than 0.8.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: November 5, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Dai Yamamoto, Yuki Watanabe, Tetsuro Kano, Nobuyasu Negishi, Hidesato Saruwatari
  • Patent number: 10461369
    Abstract: According to one embodiment, a battery includes a flat-shaped electrode group, a package member and a terminal section. The package member includes a stainless steel-made first package having a flange at an opening and a stainless steel-made second package. The electrode group is stored in a space formed by welding the flange of the first package to the second package. The terminal section includes a through-hole that is open to the first package, a ring-shaped rising portion that extends from a periphery of the through-hole toward an inside of the package member, a ring-shaped member that is arranged on an outer surface of the rising portion, an insulation gasket, and an external terminal. The external terminal is fixed to the first package by caulking.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: October 29, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Nobuyasu Negishi, Tatsuya Hashimoto, Koichi Kawamura, Tatsuya Shinoda, Naoki Iwamura, Koichi Takeshita, Hirokiyo Mamyoda
  • Patent number: 10418612
    Abstract: A secondary battery according to one embodiment includes, an electrode group which is a cathode and an anode wound with a separator being interposed therebetween, a first lead having a first welding surface, a second lead having a second welding surface which is bent with respect to a winding axial direction of the electrode group, a first current collecting tab which is extended from one end of the electrode group on the winding axial direction, and welded onto the first welding surface of the first lead, a second current collecting tab which is extended from the other end of the electrode group on the winding axial direction, and welded onto the second welding surface of the second lead, a first terminal connected to the first lead, and a second terminal connected to the second lead.
    Type: Grant
    Filed: July 25, 2016
    Date of Patent: September 17, 2019
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya Shinoda, Tatsuya Hashimoto, Koichi Kawamura, Nobuyasu Negishi, Koichi Takeshita, Yasuaki Murashi
  • Publication number: 20190097202
    Abstract: According to an embodiment, a battery module includes, for example, a plurality of battery cells, a first chassis, and a connection member. The battery cells are aligned in a first direction. The first chassis includes a plurality of first compartments in which the battery cells are housed one by one, and at least one second compartment that is partitioned in the first direction. The connection member includes a body that is housed in the second compartment; a pair of connection terminals that is mounted on a first face of the body and is electrically connectable to the electrodes of the battery cells via a conductive member, the first face facing in a second direction intersecting with the first direction; and a conductor that extends across the pair of connection terminals.
    Type: Application
    Filed: September 20, 2018
    Publication date: March 28, 2019
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Masahito Morone, Hirofumi Yamamoto, Tatsumi Matsuo, Motohiro Itou, Shinya Sato, Kazuto Kuroda, Ryo Okabe, Norihiro Kaneko, Minoru Gyoda, Yuji Sasaki, Kota Asami, Nobuyasu Negishi
  • Patent number: 9960393
    Abstract: A battery disclosed herein includes a container member housing an electrode body and a lead, a gasket, an external terminal, and a restraining member. The container member includes a terminal-connecting part having a thickness of 0.3 mm or less. The terminal-connecting part includes a through hole including a rising part. The gasket includes a hollow shaft inserted into the rising part. The external terminal includes a terminal shaft. The terminal shaft includes a diameter-reduction part. The restraining member restrains at least a part of the diameter-reduction part of the terminal shaft via the diameter-reduction part of the rising part and the shaft of the gasket. The inclination angle of the rising part is larger than the inclination angle of the terminal shaft.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: May 1, 2018
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Nobuyasu Negishi, Tatsuya Hashimoto, Tatsuya Shinoda, Koichi Kawamura, Naoki Iwamura
  • Publication number: 20180108949
    Abstract: According to one embodiment, a battery includes a flat-shaped electrode group, a package member and a terminal section. The package member includes a stainless steel-made first package having a flange at an opening and a stainless steel-made second package. The electrode group is stored in a space formed by welding the flange of the first package to the second package. The terminal section includes a through-hole that is open to the first package, a ring-shaped rising portion that extends from a periphery of the through-hole toward an inside of the package member, a ring-shaped member that is arranged on an outer surface of the rising portion, an insulation gasket, and an external terminal. The external terminal is fixed to the first package by caulking.
    Type: Application
    Filed: December 14, 2017
    Publication date: April 19, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Nobuyasu Negishi, Tatsuya Hashimoto, Koichi Kawamura, Tatsuya Shinoda, Naoki Iwamura, Koichi Takeshita, Hirokiyo Mamyoda
  • Publication number: 20180102528
    Abstract: According to one embodiment, a battery is provided. The battery includes an electrode body, a lead, a container member, and a terminal. The container member includes a main part and a terminal-connecting part adjacent to the main part. The electrode body is housed in the main part of the container member. The lead is electrically connected to the electrode body. The lead is housed in the terminal-connecting part of the container member. The terminal is electrically connected to the lead. The terminal is provided on the terminal-connecting part. A thickness of the main part of the container member is larger than a thickness of the terminal-connecting part of the container member.
    Type: Application
    Filed: December 8, 2017
    Publication date: April 12, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Nobuyasu NEGISHI, Tatsuya Hashimoto, Naoki Iwamura, Tatsuya Shinoda, Koichi Takeshita, Yasuaki Murashi
  • Publication number: 20170271671
    Abstract: According to one embodiment, there is provided a nonaqueous electrolyte battery including a positive electrode, a negative electrode and a nonaqueous electrolyte. The positive electrode includes a positive electrode active material layer including a lithium nickel cobalt manganese composite oxide. The negative electrode includes a negative electrode active material layer including a spinel type lithium titanate. The nonaqueous electrolyte has an ion conductivity of not less than 7 mS/cm and not more than 10 mS/cm at 25° C. A capacity ratio p/n is within a range of not less than 1.4 and not more than 1.8. A thickness ratio Tp/Tn is within a range of not less than 1.05 and less than 1.3. A ratio Pp/Pn is within a range of not less than 0.55 and less than 0.8.
    Type: Application
    Filed: March 9, 2017
    Publication date: September 21, 2017
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Dai YAMAMOTO, Yuki WATANABE, Tetsuro KANO, Nobuyasu NEGISHI, Hidesato SARUWATARI
  • Publication number: 20170179535
    Abstract: According to an embodiment, an electrode is provided. The electrode group includes a stack. The stack includes a positive electrode, a negative electrode or negative electrodes, and separator. Each negative electrode includes a negative electrode current collector and a negative electrode layer provided on the negative electrode current collector. The electrode group satisfies following relational formulae (I) to (III): 10?a1/b1?16 (I); 0.7?D1/E1?1.4 (II); E1?85 (III). Here, the a1 [mm] is a thickness of the stack. The b1 [mm] is a thickness of the negative electrode current collector, or is a total thickness of the negative electrode current collectors. The D1 [?m] is a thickness of the positive electrode. The E1 [?m] is a thickness of the negative electrode.
    Type: Application
    Filed: March 8, 2017
    Publication date: June 22, 2017
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasuaki MURASHI, Nobuyasu NEGISHI, Tatsuya SHINODA, Koichi TAKESHITA, Koichi KAWAMURA, Tatsuya HASHIMOTO
  • Publication number: 20160336576
    Abstract: A secondary battery according to one embodiment includes, an electrode group which is a cathode and an anode wound with a separator being interposed therebetween, a first lead having a first welding surface, a second lead having a second welding surface which is bent with respect to a winding axial direction of the electrode group, a first current collecting tab which is extended from one end of the electrode group on the winding axial direction, and welded onto the first welding surface of the first lead, a second current collecting tab which is extended from the other end of the electrode group on the winding axial direction, and welded onto the second welding surface of the second lead, a first terminal connected to the first lead, and a second terminal connected to the second lead.
    Type: Application
    Filed: July 25, 2016
    Publication date: November 17, 2016
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tatsuya SHINODA, Tatsuya HASHIMOTO, Koichi KAWAMURA, Nobuyasu NEGISHI, Koichi TAKESHITA, Yasuaki MURASHI
  • Publication number: 20160336554
    Abstract: A battery disclosed herein includes a container member housing an electrode body and a lead, a gasket, an external terminal, and a restraining member. The container member includes a terminal-connecting part having a thickness of 0.3 mm or less. The terminal-connecting part includes a through hole including a rising part. The gasket includes a hollow shaft inserted into the rising part. The external terminal includes a terminal shaft. The terminal shaft includes a diameter-reduction part. The restraining member restrains at least a part of the diameter-reduction part of the terminal shaft via the diameter-reduction part of the rising part and the shaft of the gasket. The inclination angle of the rising part is larger than the inclination angle of the terminal shaft.
    Type: Application
    Filed: July 29, 2016
    Publication date: November 17, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Nobuyasu NEGISHI, Tatsuya HASHIMOTO, Tatsuya SHINODA, Koichi KAWAMURA, Naoki IWAMURA