Patents by Inventor Yoshinao Tatebayashi

Yoshinao Tatebayashi 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: 10741896
    Abstract: According to an embodiment, there is provided a battery system. The battery system includes a first battery and a second battery connected in parallel with the first battery. The first battery includes a lead storage battery. The second battery includes a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The negative electrode includes a negative-electrode-mixture layer, and the negative-electrode-mixture layer contains lithium titanate. The positive electrode contains a positive electrode active material LiMn2-xM(a)xO4. A ratio of a battery capacity of the second battery to a battery capacity of the first battery is in a range of 1/133 to 1/2.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: August 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Haruchika Ishii, Kazuya Kuriyama, Toshihide Arikawa, Hirotada Tahara, Masataka Shikota, Hiroki Inagaki, Yuichi Kikuma, Kengo Kurata, Hirotaka Hayashida, Yoshinao Tatebayashi
  • Patent number: 10454085
    Abstract: The electrode according to an embodiment includes an electrode layer and an organic fiber-containing layer. The organic fiber-containing layer is provided on the electrode layer. The organic fiber-containing layer includes an organic fiber. The organic fiber-containing layer has a ratio tW/tD within a range of 1.1 to 2.55, where tW is a thickness [?m] in a wet state and tD is a thickness [?m] in a dry state. A ratio dW/dD is within a range of 0.95 to 1.05, where dW is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the wet state, and dD is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the dry state.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: October 22, 2019
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Masanori Tanaka, Yoshinao Tatebayashi
  • Publication number: 20180034026
    Abstract: The electrode according to an embodiment includes an electrode layer and an organic fiber-containing layer. The organic fiber-containing layer is provided on the electrode layer. The organic fiber-containing layer includes an organic fiber. The organic fiber-containing layer has a ratio [?m] within a range of 1.1 to 2.55, where tW is a thickness [?m] in a wet state and tD is a thickness [?m] in a dry state. A ratio dW/dD is within a range of 0.95 to 1.05, where dW is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the wet state, and dD is an average fiber diameter [nm] of the organic fiber included in the organic fiber-containing layer in the dry state.
    Type: Application
    Filed: October 4, 2017
    Publication date: February 1, 2018
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Masanori TANAKA, Yoshinao TATEBAYASHI
  • Patent number: 9608255
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: March 28, 2017
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
  • Patent number: 9461307
    Abstract: A power supply system includes a first battery module and a second battery module. The first battery module comprises a first nonaqueous electrolyte battery comprising a negative electrode containing a carbonaceous material. The second battery module comprises a second nonaqueous electrolyte battery comprising a negative electrode and a positive electrode. The negative electrode contains a negative electrode active material that has a lithium ion absorbing potential of 0.4V (vs. Li/Li+) or more and an average particle diameter of 1 ?m or less. The positive electrode contains lithium metallic oxide represented by LixCoyM1?yO2. The second battery module is chargeable in a range of 20 to 80% of charging depth so that a charging current density (A/kg) of the second nonaqueous electrolyte battery becomes higher that that of the first nonaqueous electrolyte battery.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: October 4, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi, Yasuhiro Harada
  • Publication number: 20160126546
    Abstract: A power supply system includes a first battery module and a second battery module. The first battery module comprises a first nonaqueous electrolyte battery comprising a negative electrode containing a carbonaceous material. The second battery module comprises a second nonaqueous electrolyte battery comprising a negative electrode and a positive electrode. The negative electrode contains a negative electrode active material that has a lithium ion absorbing potential of 0.4V (vs.Li/Li+) or more and an average particle diameter of 1 ?m or less. The positive electrode contains lithium metallic oxide represented by LixCoyM1?yO2. The second battery module is chargeable in a range of 20 to 80% of charging depth so that a charging current density (A/kg) of the second nonaqueous electrolyte battery becomes higher that that of the first nonaqueous electrolyte battery.
    Type: Application
    Filed: January 13, 2016
    Publication date: May 5, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio TAKAMI, Hiroki INAGAKI, Yoshinao TATEBAYASHI, Yasuhiro HARADA
  • Patent number: 9325031
    Abstract: According to one embodiment, there is provided a battery including a positive electrode, and a negative electrode. The positive electrode contains a lithium-cobalt composite oxide and a lithium-manganese composite oxide. The negative electrode contains a lithium titanium composite oxide. The battery satisfies the following formula (1). In addition, an open circuit voltage (OCV) of the positive electrode when the battery is discharged to 1.8 V at 0.2 C is 3.6 V (Li v.s. Li+) or more. (Qp/Qn)>1.1??(1) Qp is a charge capacity (mAh/m2) of the positive electrode per unit area, and Qn is a charge capacity (mAh/m2) of the negative electrode per unit area.
    Type: Grant
    Filed: February 26, 2014
    Date of Patent: April 26, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuaki Murashi, Hidetoshi Watanabe, Koji Takazawa, Yoshinao Tatebayashi
  • Publication number: 20160111703
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Application
    Filed: December 29, 2015
    Publication date: April 21, 2016
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio TAKAMI, Hiroki INAGAKI, Yoshinao TATEBAYASHI
  • Patent number: 9257727
    Abstract: An assembled battery includes a conductive filler, a first cell, a second cell. The first cell includes a flat first electrode tab made of aluminum or an aluminum alloy. The second cell includes a flat second electrode tab made of aluminum or an aluminum alloy. The second electrode tab is electrically connected to the first electrode tab through the conductive filler intervening between the first cell and the second cell and through weld surfaces of the first cell and the second cell which are at least partly welded to each other.
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: February 9, 2016
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
  • Patent number: 9257693
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 9, 2016
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
  • Publication number: 20150380787
    Abstract: According to an embodiment, there is provided a battery system. The battery system includes a first battery and a second battery connected in parallel with the first battery. The first battery includes a lead storage battery. The second battery includes a nonaqueous electrolyte battery. The nonaqueous electrolyte battery includes a positive electrode and a negative electrode. The negative electrode includes a negative-electrode-mixture layer, and the negative-electrode-mixture layer contains lithium titanate. The positive electrode contains a positive electrode active material LiMn2-x(a)xO4. A ratio of a battery capacity of the second battery to a battery capacity of the first battery is in a range of 1/133 to 1/2.
    Type: Application
    Filed: September 9, 2015
    Publication date: December 31, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Haruchika ISHII, Kazuya KURIYAMA, Toshihide ARIKAWA, Hirotada TAHARA, Masataka SHIKOTA, Hiroki INAGAKI, Yuichi KlKUMA, Kengo KURATA, Hirotaka HAYASHIDA, Yoshinao TATEBAYASHI
  • Patent number: 9209452
    Abstract: A positive electrode material for non-aqueous electrolyte secondary batteries having high rate characteristics and high energy density, and a battery using the same are provided. The non-aqueous electrolyte secondary battery includes a positive electrode containing a positive electrode material, a conductive agent and a binder; a negative electrode; a separator; and a non-aqueous electrolyte, in which the positive electrode material contains core particles and a coating material that covers from 10% to 90% of the surfaces of the core particles, the core particles are formed of a compound represented by LiaMbPO4 (wherein M represents at least one element selected from Fe, Mn, Co and Ni, and satisfies the relations: 0<a?1.1 and 0<b?1), and the coating material part is formed of a compound which is capable of insertion and extraction of Li ions in the potential range exhibited by the core particles at the time of charge and discharge.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: December 8, 2015
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Dai Yamamoto, Shinsuke Matsuno, Yoshinao Tatebayashi, Norio Takami
  • Publication number: 20150236330
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Application
    Filed: April 30, 2015
    Publication date: August 20, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio TAKAMI, Hiroki INAGAKI, Yoshinao TATEBAYASHI
  • Patent number: 9054369
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt. % containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: June 9, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
  • Patent number: 8920958
    Abstract: A nonaqueous electrolyte battery includes a flattened electrode group, a case, a positive electrode terminal and a negative electrode terminal. The positive electrode terminal is bent around one edge portion of the positive electrode terminal, curved toward the electrode group and reaches a sealed portion. The other edge portion of the positive electrode terminal extends from the case through the sealed portion. The negative electrode terminal is bent around one edge portion of the negative electrode terminal, curved toward the electrode group and reaches the sealed portion. The other edge portion of the negative electrode terminal extends from the case through the sealed portion. The positive electrode terminal satisfies formula (1) given below and the negative electrode terminal satisfies formula (2) given below: t2×W2?0.25 Sp??(1) t3×W3?0.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: December 30, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshinao Tatebayashi, Hiroki Inagaki, Norio Takami
  • Publication number: 20140272562
    Abstract: In general, according to one embodiment, a positive electrode is provided. The positive electrode includes a positive electrode current collector and a positive-electrode-mixture layer formed on the positive electrode current collector. The positive-electrode-mixture layer includes first pores and second pores. Pore size diameters D1 and D2 of the first and the second pores satisfy relationship: 0.03<D1/D2<0.8. Total volumes V(D1) and V(D2) of the first and the second pores satisfy the following relationship: 2<log V(D1)/log V(D2)<6.
    Type: Application
    Filed: March 5, 2014
    Publication date: September 18, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Hidetoshi WATANABE, Yasuaki MURASHI, Yoshinao TATEBAYASHI, Hidesato SARUWATARI, Hikaru YOSHIKAWA
  • Publication number: 20140242466
    Abstract: According to one embodiment, there is provided a battery including a positive electrode, and a negative electrode. The positive electrode contains a lithium-cobalt composite oxide and a lithium-manganese composite oxide. The negative electrode contains a lithium titanium composite oxide. The battery satisfies the following formula (1). In addition, an open circuit voltage (OCV) of the positive electrode when the battery is discharged to 1.8 V at 0.2 C is 3.6 V (Li v.s. Li+) or more. (Qp/Qn)>1.1??(1) Qp is a charge capacity (mAh/m2) of the positive electrode per unit area, and Qn is a charge capacity (mAh/m2) of the negative electrode per unit area.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuaki Murashi, Hidetoshi Watanabe, Koji Takazawa, Yoshinao Tatebayashi
  • Patent number: 8765304
    Abstract: According to one embodiment, a non-aqueous electrolyte battery includes an outer case, a negative electrode, a positive electrode including a current collector and a positive electrode layer formed on surface of the current collector and opposed to the negative electrode layer, and a non-aqueous electrolyte, wherein the positive electrode layer includes a layered lithium nickel cobalt manganese composite oxide and a lithium cobalt composite oxide, the positive electrode layer has a pore volume with a pore diameter of 0.01 to 1.0 ?m, the pore volume being 0.06 to 0.25 mL per 1 g of a weight of the positive electrode layer, and a pore surface area within the pore volume range is 2.4 to 8 m2/g.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: July 1, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiyuki Isozaki, Hidesato Saruwatari, Yoshinao Tatebayashi, Takashi Kuboki, Norio Takami
  • Publication number: 20140134474
    Abstract: A nonaqueous electrolyte secondary battery, having an internal resistance of 10 m? or less as an alternating-current impedance value of 1 kHz, comprises a metal outer container, a nonaqueous electrolyte contained in the container, a positive electrode contained in the container, a negative electrode contained in the container, a separator interposed between the negative electrode and the positive electrode, a negative electrode lead having one end connected to the negative electrode, and a negative electrode terminal attached to the outer container so as to be connected electrically to the other end of the negative electrode lead, at least the surface of the negative electrode terminal which is connected to the negative electrode lead being formed of aluminum alloy with an aluminum purity of less than 99 wt.% containing at least one metal selected from the group consisting of Mg, Cr, Mn, Cu, Si, Fe and Ni.
    Type: Application
    Filed: January 17, 2014
    Publication date: May 15, 2014
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hiroki Inagaki, Yoshinao Tatebayashi
  • Patent number: 8715859
    Abstract: According to one embodiment, a non-aqueous electrolyte battery includes an outer case, a negative electrode, a positive electrode including a current collector and a positive electrode layer formed on surface of the current collector and opposed to the negative electrode layer, and a non-aqueous electrolyte, wherein the positive electrode layer includes a layered lithium nickel cobalt manganese composite oxide and a lithium cobalt composite oxide, the positive electrode layer has a pore volume with a pore diameter of 0.01 to 1.0 ?m, the pore volume being 0.06 to 0.25 mL per 1 g of a weight of the positive electrode layer, and a pore surface area within the pore volume range is 2.4 to 8 m2/g.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: May 6, 2014
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yoshiyuki Isozaki, Hidesato Saruwatari, Yoshinao Tatebayashi, Takashi Kuboki, Norio Takami