Patents by Inventor Yasuhiro Harada

Yasuhiro Harada 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).

  • Active material, active material composite material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 11063256
    Abstract: According to one embodiment, an active material is provided. The active material includes particles of a monoclinic niobium titanium composite oxide. The particles include primary particles. The primary particles have an average aspect ratio of 5 or more.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: July 13, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Taro Fukaya, Takuya Iwasaki
  • Electrode structure, secondary battery, battery pack, and vehicle
    Patent number: 11050048
    Abstract: According to one embodiment, an electrode structure is provided. The electrode structure includes an electrode and a separator. The electrode includes an active material-containing layer. The active material-containing layer contains active material particles. The separator includes a layer of organic fibers and inorganic solid particles. The layer of organic fibers is on the active material containing layer. The inorganic solid particles are on the layer of organic fibers. The inorganic solid particles are disposed so as to be biased to a surface side opposite to an electrode side of the separator.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: June 29, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoe Kusama, Yasuhiro Harada, Kazuomi Yoshima, Norio Takami
  • Lithium ion secondary battery, battery pack, and vehicle
    Patent number: 11043693
    Abstract: According to one embodiment, a lithium ion secondary battery is provided. The lithium ion secondary battery includes a negative electrode containing a negative electrode active material-containing layer, a positive electrode, and an electrolyte containing Li ions and Na ions. The negative electrode active material-containing layer contains a Na-containing titanium composite oxide. A ratio (WE/WA) of an Na amount WE (g/g) in the electrolyte to an Na amount WA (g/g) in the negative electrode active material-containing layer satisfies Formula (1) below: 1×10?1?WE/WA?1×105??(1).
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: June 22, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yusuke Namiki, Yasuhiro Harada, Norio Takami
  • Electrode group, secondary battery, battery pack, and vehicle
    Patent number: 10978691
    Abstract: According to one embodiment, there is provided an electrode group including an electrically insulating layer, a first electrode, and a second electrode. The second electrode is stacked in a first direction on the first electrode with the electrically insulating layer interposed therebetween. The first electrode includes plural first end portions in one or more second directions among directions orthogonal to the first direction. The plural first end portions are disposed at different positions in at least one of the second directions.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: April 13, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Takashi Kishi, Kazuomi Yoshima, Tomoko Sugizaki, Yasuhiro Harada, Norio Takami
  • Secondary battery, battery pack, and vehicle
    Patent number: 10978752
    Abstract: According to one embodiment, a secondary battery is provided. The secondary battery includes a negative electrode. The negative electrode includes an active material composite. The active material composite includes active material particles and a layer covering at least a portion of surfaces of the active material particles. The active material particles include titanium-containing oxide particles. The layer contains N and Si. The layer includes a first surface facing the at least the portion of surfaces of the active material particles and a second surface defining a layer thickness from the first surface. An N concentration in the layer decreases from the first surface to the second surface. A Si concentration in the layer increases from the first surface to the second surface.
    Type: Grant
    Filed: September 5, 2018
    Date of Patent: April 13, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Taro Fukaya, Takashi Kishi, Kazuki Ise, Kazuomi Yoshima, Yasunobu Yamashita, Yasuhiro Harada, Norio Takami
  • Electrode, secondary battery, battery pack, and vehicle
    Patent number: 10957906
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average crystallite diameter of the plurality of primary particles is 90 nm or more. The average particle size (D50) of the plurality of primary particles is in a range of 0.1 ?m to 5 ?m. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is less than 0.70 in 100 primary particles among the plurality of primary particles.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: March 23, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Kazuki Ise, Kazuomi Yoshima
  • Active material, nonaqueous electrolyte battery, battery pack and vehicle
    Patent number: 10957900
    Abstract: According to one embodiment, there is provided an active material. The active material includes secondary particles. The secondary particles include first primary particles and second primary particles. The first primary particles include an orthorhombic Na-containing niobium-titanium composite oxide. The second primary particles include at least one selected from the group consisting of a carbon black, a graphite, a titanium nitride, a titanium carbide, a lithium titanate having a spinel structure, a titanium dioxide having an anatase structure, and a titanium dioxide having a rutile structure.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: March 23, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Keigo Hoshina, Yasuhiro Harada, Norio Takami
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083297
    Abstract: According to one embodiment, an electrode is provided. The electrode includes the active material-containing layer formed on the current collector and including active material particles. The particle size distribution chart obtained by the laser diffraction scattering method for the active material particles includes the first region and the second region. The first particle group included in the first region includes the first active material particles, and the second particle group included in the second region includes second active material particles. The carbon coverage of the first particle group is higher than the carbon coverage of the second particle group.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yuta KANAI, Tetsuya SASAKAWA, Keigo HOSHINA, Yasuhiro HARADA, Norio TAKAMI
  • COMPOSITE OXIDE, ACTIVE MATERIAL COMPOSITE MATERIAL, ELECTRODE, BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083263
    Abstract: According to one embodiment, provided is a composite oxide containing lithium, niobium, and tantalum. A mass ratio of tantalum with respect to niobium is in a range of from 0.01% to 1.0%.
    Type: Application
    Filed: February 27, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro HARADA, Norio TAKAMI, Kazuomi YOSHIMA, Yasunobu YAMASHITA
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083298
    Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector, a first layer formed on the current collector, and a second layer formed on at least part of the first layer. The first layer contains a monoclinic niobium titanium composite oxide. The second layer contains lithium titanate having a spinel structure. A porosity P2 of the second layer is within a range from 30% to 80%.
    Type: Application
    Filed: February 11, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoko Sugizaki, Tetsuya Sasakawa, Kazuomi Yoshima, Tomoe Kusama, Yasuhiro Harada, Norio Takami
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083269
    Abstract: According to one embodiment, an electrode is provided. The active material-containing layer includes an active material, inorganic solid particles having lithium ion conductivity, and carbon fiber. A pore diameter DM at the first peak is 0.05 ?m to 10 ?m. A value SA-SB is 1.4 or more in a slope distribution curve of the active material-containing layer, where a vertical axis of the slope distribution curve represents a slope of a straight line passing through two adjacent measurement points on the log differential pore volume distribution curve and a horizontal axis of the slope distribution curve represents a smaller pore diameter of the two adjacent measurement points. The value SA-SB is obtained by subtracting a minimum slope value SB from a maximum slope value SA.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomoe Kusama, Tetsuya Sasakawa, Kazuomi Yoshima, Tomoko Sugizaki, Wen Zhang, Yasuhiro Harada, Norio Takami
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083278
    Abstract: According to one embodiment, an electrode includes a current collector and an active material-containing layer. The active material-containing layer contains a titanium-niobium composite oxide. A cross-section of the active material-containing layer includes a first cross-section from the current collector to length 0.5t with respect to a thickness t of the active material-containing layer, and a second cross-section from length 0.5t to length t from the current collector. An area ratio S1 occupied by the titanium-niobium composite oxide within the first cross-section, and an area ratio S2 occupied by the titanium-niobium composite oxide within the second cross-section satisfy 0.8<S2/S1<1. A maximum peak in a particle diameter frequency distribution of the titanium-niobium composite oxide is from 0.5 ?m to 3 ?m.
    Type: Application
    Filed: March 6, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Yasunobu YAMASHITA, Wen ZHANG, Yasuhiro HARADA, Norio TAKAMI
  • ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20210083277
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer contains an active material and a flat plate-shaped silicate.
    Type: Application
    Filed: February 27, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasunobu YAMASHITA, Keigo Hoshina, Yasuhiro Harada, Norio Takami
  • CHARGE AND DISCHARGE CONTROL DEVICE, BATTERY PACK, VEHICLE, AND CHARGE AND DISCHARGE CONTROL METHOD
    Publication number: 20210075225
    Abstract: According to one embodiment, information related to a positive-electrode electric potential and a negative-electrode electric potential of each of one or more batteries is acquired, and whether deviation of the positive/negative-electrode electric potentials from a reference state is beyond a prescribed range is determined for each of one or more batteries. Further, in response to at least existence of a battery-to-be-restored that is a battery in which the determined deviation of positive/negative-electrode electric potentials from a reference state is beyond a prescribed range, a state of charge of the battery-to-be-restored is held in a restoration holding range for a prescribed time.
    Type: Application
    Filed: February 6, 2020
    Publication date: March 11, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Taro FUKAYA, Norio TAKAMI, Yasuhiro HARADA, Takashi KISHI, Keigo HOSHINA, Kazuomi YOSHIMA, Yasunobu YAMASHITA
  • Electrode, secondary battery, battery pack, and vehicle
    Patent number: 10944104
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer which contains an active material. The active material includes a plurality of primary particles containing a niobium-titanium composite oxide. The average value (FUave) of the roughness shape coefficient (FU) according to Formula (1) below is 0.70 or more in 100 primary particles among the plurality of primary particles.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: March 9, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Takuya Iwasaki, Kazuki Ise, Kazuomi Yoshima
  • Electrode, laminate, lithium ion secondary battery, battery pack, and vehicle
    Patent number: 10938020
    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: Grant
    Filed: February 28, 2019
    Date of Patent: March 2, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Kazuomi Yoshima, Yasunobu Yamashita, Yasuhiro Harada, Norio Takami
  • Active material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 10930930
    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: Grant
    Filed: February 28, 2019
    Date of Patent: February 23, 2021
    Assignees: KABUSHIKI KAISHA TOSHIBA, Toshiba Infrastructure Systems & Solutions Corporation
    Inventors: Yasuhiro Harada, Norio Takami, Yasunobu Yamashita, Kazuomi Yoshima
  • Active material, electrode, secondary battery, battery pack, and vehicle
    Patent number: 10910648
    Abstract: According to one embodiment, an active material is provided. The active material includes a lithium niobium composite oxide represented by a general formula LixFe1?yM1yNb11?2M2zO29 (1) and having an orthorhombic crystal structure. In the general formula (1), 0?x?23, 0?y?1 and 0<z?6 are satisfied. Each of M1 and M2 independently includes at least one element selected from a group consisting of Fe, Mg, Al, Cu, Mn, Co, Ni, Zn, Sn, Ti, Ta, V, and Mo.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: February 2, 2021
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuhiro Harada, Norio Takami, Kazuki Ise
  • Solid electrolyte, manufacturing method of solid electrolyte, battery and battery pack
    Patent number: 10892517
    Abstract: According to one embodiment, a solid electrolyte includes a sintered body of ceramic grains. The sintered body includes a crystal plane having an ion conducting path. The crystal plane is oriented in a direction which intersects at least one surface of the solid electrolyte.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: January 12, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Yasuhiro Harada, Norio Takami, Hiroki Inagaki
  • ACTIVE MATERIAL, ELECTRODE, SECONDARY BATTERY, BATTERY PACK, AND VEHICLE
    Publication number: 20200403229
    Abstract: According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1?s(Nb1?t?uTatM?u)sO2. Here, M is at least one selected from the group consisting of Li, Ca, Mg, Al, Ti, V, Cr, Zr, Mo, Hf, and W, M? is at least one selected from the group consisting of K, P, Fe, Si, Na, Cu and Zn, and 1.0?x?1.3, 0?a?0.9, 0?b?1.0, 0?c?0.8, 0?d?0.5, a+b+c+d=1, 0.005?s?0.3, 0.0005?t?0.1, and 0?u?0.3 are satisfied.
    Type: Application
    Filed: August 31, 2020
    Publication date: December 24, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tetsuya Sasakawa, Yasuhiro Harada, Norio Takami