Patents by Inventor Norio Takami

Norio Takami 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).

  • Production method of battery active material, battery active material, nonaqueous electrolyte battery and battery pack
    Patent number: 10629901
    Abstract: A production method of a battery active material of the present embodiment includes a step of obtaining a coprecipitated product containing Ti and Nb by mixing a solution with a pH of 5 or lower, in which a Ti compound is dissolved, and a solution with a pH of 5 or lower, in which a Nb compound is dissolved, such that molar ratio of Ti and Nb (Nb/Ti) is adjusted within a range of 1?Nb/Ti?28, and then further mixing with an alkali solution with a pH of 8 or higher; and a step of burning the coprecipitated product under condition of 635° C. or higher and 1200° C. or lower.
    Type: Grant
    Filed: July 10, 2017
    Date of Patent: April 21, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Kazuki Ise, Yasuhiro Harada, Norio Takami
  • Active material, active material composite material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 10608250
    Abstract: According to one embodiment, an active material is provided. The active material includes particles. The particles have a crystal structure belonging to a monoclinic niobium-titanium composite oxide. A ratio of a crystallite size Dc corresponding to a (020) plane with respect to an average primary particle size Dp of the particles is not less than 35%.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: March 31, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuki Ise, Yasuhiro Harada, Norio Takami
  • ACTIVE MATERIAL, ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200091502
    Abstract: According to one embodiment, an active material is provided. The active material includes a first phase including a niobium-titanium composite oxide, and a second phase adjacent to the first phase and including an orthorhombic niobium oxide. The active material is a particle in which a second (010) plane of the orthorhombic niobium oxide is in contact with a first (010) plane of the niobium-titanium composite oxide in at least a part of a contact interface between the first phase and the second phase.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro HARADA, Norio Takami, Keigo Hoshina, Kazuomi Yoshima
  • ACTIVE MATERIAL, ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200091513
    Abstract: According to one embodiment, an active material is provided. The active material includes a primary particle containing a phosphorus-containing monoclinic niobium-titanium composite oxide. The primary particle has a concentration gradient in which a phosphorus concentration increases from the gravity point of the primary particle toward the surface of the primary particle.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro HARADA, Norio Takami, Yasunobu Yamashita, Kazuomi Yoshima
  • ELECTRODE, LAMINATE, LITHIUM ION SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200091499
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer including active material particles and solid electrolyte particles being present away from the active material particles. The active material particles have lithium ion conductivity. The solid electrolyte particles have first ion conductivity. The solid electrolyte particles include a first ion that is at least one selected from the group consisting of an alkali metal ion excluding a lithium ion, a Ca ion, an Mg ion, and an Al ion.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kazuomi YOSHIMA, Yasunobu YAMASHITA, Yasuhiro HARADA, Norio TAKAMI
  • BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200091560
    Abstract: According to one embodiment, a battery includes a container member, electrode groups, and a sheet member. In the interior of the container member, the sheet member forms a partition wall that separates adjacent electrode groups from each other. The sheet member includes a metal layer and an insulating layer. In the sheet member, the metal layer forms an electric path, and the electric path electrically connects the adjacent electrode groups. In the sheet member, the insulating layer is laminated on both sides of the metal layer in an arranging direction of the adjacent electrode groups.
    Type: Application
    Filed: February 28, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Tetsuya Sasakawa, Kazuomi Yoshima, Norio Takami
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200091505
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes an active material and a conductive agent. The active material contains primary particles of a niobium-titanium composite oxide. The conductive agent contains fibrous carbon. The primary particles have an average particle size of 0.3 ?m or more and 2 ?m or less. At least a part of a surface of the primary particles is coated with the fibrous carbon. A covering ratio of the primary particles by the fibrous carbon is 0.01% or more and 40% or less.
    Type: Application
    Filed: March 8, 2019
    Publication date: March 19, 2020
    Applicants: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Keigo HOSHINA, Wen Zhang, Yasuhiro Harada, Norio Takami
  • Active material, active material composite material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 10566619
    Abstract: According to one embodiment, an active material is provided. The active material includes particles. The particles have a crystal structure belonging to a monoclinic niobium-titanium composite oxide. A ratio of a crystallite size Dc corresponding to a (020) plane with respect to an average primary particle size Dp of the particles is not less than 35%.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: February 18, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuki Ise, Yasuhiro Harada, Norio Takami
  • Nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 10559820
    Abstract: According to one embodiment, a nonaqueous electrolyte battery is provided. The nonaqueous electrolyte battery includes a positive electrode, a negative electrode including a negative electrode active material layer, a separator layer, an intermediate region, and a gel nonaqueous electrolyte. The separator layer and the intermediate region hold at least a part of the gel nonaqueous electrolyte. The nonaqueous electrolyte battery satisfies a volume ratio VA/VB of 5 or more. VA is a volume of the intermediate region. VB is an average volume of gaps among the particles of the niobium-and-titanium-containing composite oxide in the negative electrode active material layer.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: February 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Kishi, Kazuomi Yoshima, Wen Zhang, Yasuhiro Harada, Norio Takami
  • Non-aqueous electrolyte battery, non-aqueous electrolyte battery pack, and vehicle
    Patent number: 10559843
    Abstract: A non-aqueous electrolyte battery includes an electrode group including positive, negative and bipolar electrodes and separators interposed between these electrodes. In the positive electrode, positive electrode active material layers are formed on both side surfaces of a current collector. In the negative electrode, negative electrode active material layers are formed on both side surfaces of a current collector. In the bipolar electrode, positive and negative electrode active material layers are formed on both side surfaces of a current collector respectively. In the group, these electrodes are stacked with the interposed separators. The group includes current collecting tabs for these electrodes. Connecting portions of these tabs are arranged in different positions on an outer periphery of the group.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 11, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Sasakawa, Kazuomi Yoshima, Yasuhiro Harada, Norio Takami
  • Secondary battery, battery pack, and vehicle
    Patent number: 10559854
    Abstract: According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a separator, a first electrolyte and a second electrolyte. The separator is arranged at least between the positive electrode and the negative electrode. The first electrolyte is contained at least in the positive electrode. The first electrolyte includes a lithium salt and an aqueous solvent. The second electrolyte is contained at least in the negative electrode. The second electrolyte includes a bis(fluorosulfonyl)imide salt and an aqueous solvent.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 11, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Norio Takami, Hayato Seki, Shinsuke Matsuno
  • Secondary battery, composite electrolyte, battery pack, and vehicle
    Patent number: 10559848
    Abstract: According to one embodiment, a composite electrolyte includes lithium-containing oxide particles and an electrolytic composition. The electrolytic composition includes lithium ions, an organic solvent and a polymer. A content of the lithium-containing oxide particles in the composite electrolyte falls within a range of from 90% by weight to 98% by weight. A specific surface area of the lithium-containing oxide particles falls within a range of 10 m2/g to 500 m2/g and is measured by a BET adsorption method using N2.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: February 11, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Norio Takami, Kazuomi Yoshima, Yasuhiro Harada
  • ELECTRODE FOR A SECONDARY BATTERY, SECONDARY BATTERY, BATTERY PACK AND VEHICLE
    Publication number: 20200044235
    Abstract: An electrode for a secondary battery comprises a current collector; and an active material-containing layer has active materials which comprise titanium-containing composite oxide having an orthorhombic crystal structure and represented by a general formula Li2+aM12?bTi6?cM2dO14+?; wherein the active material-containing layer has intensity ratio Ia/Ib in an X-ray diffraction pattern of the active material-containing layer, the Ia and the Ib are obtained by powder X-ray diffraction method using Cu-K? ray, the intensity ratio is within a range of 0.5?Ia/Ib?2, the Ia is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 42°?2??44°, and the Ib is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 44°<2??48°.
    Type: Application
    Filed: July 26, 2019
    Publication date: February 6, 2020
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Tetsuya SASAKAWA, Wen ZHANG, Yasuhiro HARADA, Norio TAKAMI
  • ELECTRODE FOR A SECONDARY BATTERY, SECONDARY BATTERY, BATTERY PACK AND VEHICLE
    Publication number: 20200044247
    Abstract: An electrode comprises a current collector; and an active material-containing layer has active materials which comprise titanium-containing composite oxide having an orthorhombic crystal structure and represented by a general formula Li2+aM12?bTi6?cM2dO14+?; wherein the active material-containing layer has intensity ratio Ia/Ib in an X-ray diffraction pattern of the active material-containing layer, the Ia and the Ib are obtained by powder X-ray diffraction method using Cu-K? ray, the intensity ratio is within a range of 0.05?Ia/Ib<0.5, the Ia is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 42°?2??44°, and the Ib is the strongest intensity of a diffraction peak among diffraction peaks appearing within a range of 44°<2??48°.
    Type: Application
    Filed: July 24, 2019
    Publication date: February 6, 2020
    Applicants: Kabushiki Kaisha Toshiba, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Tetsuya Sasakawa, Wen Zhang, Yasuhiro Harada, Norio Takami
  • Electrode structure, secondary battery, battery pack, and vehicle
    Patent number: 10553894
    Abstract: According to one embodiment, an electrode structure is provided. The electrode structure includes a current collector, an active material layer provided on at least one surface of the current collector, and a separator layer provided on the active material layer. The separator layer includes a first region, and a second region which is adjacent to the first region and exists in the inside of the first region. An outline of a principal surface of the active material layer overlaps the first region of the separator layer, and a thickness of at least a part of the first region is thicker than a thickness of the second region.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 4, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Sugizaki, Takuya Iwasaki, Yasuhiro Harada, Norio Takami
  • Active material, nonaqueous electrolyte battery, battery pack, and vehicle
    Patent number: 10553867
    Abstract: According to one embodiment, an active material is provided. The active material includes a composite of a phase of a titanium-including composite oxide and a phase of a titanium dioxide. The titanium-including composite oxide has crystal structures which belong to a space group Cmca, a space group Fmmm, or both the space group Cmca and the space group Fmmm.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: February 4, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro Harada, Norio Takami
  • Negative electrode active material, nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 10553868
    Abstract: According to one embodiment, a negative electrode active material includes particles and a carbon material. The particles is represented by Li2+aAdTi6?bBbO14?c, where A is at least one element selected from the group consisting of Na, K, Mg, Ca, Ba, and Sr; B is a metal element other than Ti; and a, b, c, and d respectively satisfy 0?a?5, 0?b?6, 0?c?0.6, and 0?d?3. The carbon material covers at least a part of surfaces of the particles.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: February 4, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Norio Takami, Yasuhiro Harada, Kazuki Ise
  • Active material, nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 10547054
    Abstract: According to one embodiment, there is provided an active material. The active material includes a composite oxide having a monoclinic crystal structure and represented by a general formula of LiwNa2?xM1yTi6-zM2zO13+?. In the general formula, M1 is at least one metallic element selected from the group consisting of Mg, Sr, Ca, Ba, Cs and K. M2 is at least one metallic element selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn and Al. The subscript w is within a range of 0?w?6. The subscript x is within a range of 0?x<2. The subscript y is within a range of 0?y<2. The subscript z is within a range of 0<z?6. The subscript ? is within a range of ?0.1???0.1.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 28, 2020
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Harada, Norio Takami
  • Battery, battery pack, and vehicle
    Patent number: 10541442
    Abstract: According to one embodiment, a battery is provided. The battery includes one or more electrode stack. The one or more electrode stack includes an electrolyte layer, a first electrode layer, and a second electrode layer. The electrolyte layer includes an electrolyte and a carboxymethylcellulose sodium salt. The first electrode layer includes a first active material and a carboxymethylcellulose ammonium salt. The second electrode layer includes a second active material and a first binder soluble in an organic solvent. The first electrode layer is bound to a first surface of the electrolyte layer. The second electrode layer is bound to a second surface of the electrolyte layer on a reverse side to the first surface.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: January 21, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takuya Iwasaki, Norio Takami
  • Active material, nonaqueous electrolyte battery, battery pack and battery module
    Patent number: 10516163
    Abstract: In general, according to one embodiment, there is provided an active material. The active material contains a composite oxide having an orthorhombic crystal structure. The composite oxide is represented by a general formula of Li2+wNa2?xM1yTi6?zM2zO14+?. In the general formula, the M1 is at least one selected from the group consisting of Cs and K; the M2 is at least one selected from the group consisting of Zr, Sn, V, Nb, Ta, Mo, W, Fe, Co, Mn, and Al; and w is within a range of 0?w?4, x is within a range of 0<x<2, y is within a range of 0?y<2, z is within a range of 0<z?6, and ? is within a range of ?0.5???0.5.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: December 24, 2019
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro Harada, Norio Takami, Yorikazu Yoshida, Kazuki Ise