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).

  • SEPARATOR, ELECTRODE GROUP, SECONDARY BATTERY, BATTERY PACK, VEHICLE, AND STATIONARY POWER SUPPLY
    Publication number: 20210083251
    Abstract: According to one embodiment, a separator is provided. The separator includes a composite membrane. The composite membrane includes a substrate layer, a first composite layer, and a second composite layer. The first composite layer is located on one surface of the substrate layer. The second composite layer is located on the other surface of the substrate layer. The composite membrane has a coefficient of air permeability of 1×10?14 m2 or less. The first composite layer has a first surface and a second surface. The first surface is in contact with the substrate layer. The second surface is located on an opposite side to the first surface. Denseness of a portion including the first surface is lower than denseness of a portion including the second surface in the first composite layer.
    Type: Application
    Filed: February 28, 2020
    Publication date: March 18, 2021
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Yasuyuki HOTTA, Hayato SEKI, Kazuomi YOSHIMA, Shinsuke MATSUNO, 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
  • 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
  • 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: 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: 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: 20210083268
    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 including a titanium-containing composite oxide; inorganic solid particles having lithium ion conductivity; and carbon fiber. The active material-containing layer has a first peak indicating a maximum log differential pore volume in a log differential pore volume distribution curve according to mercury porosimetry. A pore diameter PD at the first peak is 0.01 ?m to 0.1 ?m. The first peak has a full width at half maximum of 0.05 ?m or less.
    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, Yosuhiro 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
  • Porous electrode including titanium-containing oxide, secondary battery, battery pack, and vehicle
    Patent number: 10886574
    Abstract: An electrode for a secondary battery includes titanium-containing oxide as an active material. The median pore diameter of the electrode is 0.050 ?m or more and 0.1 ?m or less and pore surface area of the electrode is 4 m2/g or more and 8 m2/g or less, by mercury porosimetry.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: January 5, 2021
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tetsuya Sasakawa, Norio Takami
  • NONAQUEOUS ELECTROLYTE BATTERY, BATTERY PACK AND VEHICLE
    Publication number: 20200411864
    Abstract: A nonaqueous electrolyte battery includes: a positive electrode containing a positive electrode active material made of a compound represented by a compositional formula of LiMn1-x-yFexAyPO4 (wherein A is at least one selected from the group consisting of Mg, Ca, Al, Ti, Zn and Zr, 0?x?0.3, and 0?y?0.1); a negative electrode containing a negative electrode active material made from a titanium composite oxide; and a nonaqueous electrolyte, wherein a ratio (IP-F/IP-O) of a peak intensity (IP-F) of a P-F bond to a peak intensity (IP-O) of a P-O bond on the surface of the positive electrode, which are measured by X-ray photoelectron spectroscopic analysis, is 0.4 or more and 0.8 or less.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Yasunobu YAMASHITA, Keigo HOSHINA, Yoshiyuki ISOZAKI, Norio TAKAMI
  • BATTERY AND BATTERY PACK
    Publication number: 20200403217
    Abstract: According to one embodiment, a battery is provided. The battery includes a positive electrode, and a negative electrode including a negative electrode active material-containing layer including a niobium-titanium composite oxide and a conductive agent that includes a carbon material. The negative electrode active material-containing layer includes a principal surface facing the positive electrode. Assuming that the thickness of the negative electrode active material-containing layer is A, a ratio (C2/C1) of carbon content ratio C2 at a depth of 0.5 A from the principal surface to carbon content ratio C1 at a depth of 1 ?m from the principal surface satisfies 2?C2/C1?30.
    Type: Application
    Filed: August 28, 2020
    Publication date: December 24, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Masanori TANAKA, Hironori TAKATSUKA, Yasuhiro HARADA, Norio TAKAMI
  • ELECTRODE GROUP, BATTERY, AND BATTERY PACK
    Publication number: 20200403219
    Abstract: According to one embodiment, an electrode group is provided. The electrode group includes a positive electrode active material-containing layer and a negative electrode active material-containing layer. The negative electrode active material-containing layer contains at least one titanium-containing composite oxide selected from the group consisting of a monoclinic niobium titanium composite oxide and an orthorhombic titanium-containing composite oxide. The electrode group satisfies the following formula: 6500?A/B?18500, where A is an area [cm2] of a portion of the negative electrode active material-containing layer that faces the positive electrode active material-containing layer, and B is a thickness [cm] of the electrode group.
    Type: Application
    Filed: September 8, 2020
    Publication date: December 24, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Masanori TANAKA, Yasuhiro HARADA, Norio TAKAMI
  • 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
  • Secondary battery, battery pack, vehicle, and stationary power supply
    Patent number: 10873080
    Abstract: A secondary battery including an aqueous electrolyte, a positive electrode, and a negative electrode. The negative electrode includes a negative electrode active material which contains a Ti-containing composite oxide. At least one element A selected from Hg, Pb, Zn, and Bi is present on a surface of the negative electrode. An average of molar ratios (A/(A+Ti)) of the element A ranges from 5% to 40%. Each of the molar ratios is a molar amount of the element A to a sum between the molar amount of the element A and a molar amount of Ti on the surface of the negative electrode, according to scanning electron microscopy-energy dispersive X-ray spectroscopy.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: December 22, 2020
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hayato Seki, Yumiko Sekiguchi, Kazuomi Yoshima, Yasuyuki Hotta, Shinsuke Matsuno, Norio Takami
  • ELECTRODE, BATTERY AND BATTERY PACK
    Publication number: 20200395605
    Abstract: According to one embodiment, an electrode is provided. The electrode includes an active material-containing layer. The active material-containing layer includes active material particles, a first electro-conductive agent having a fibrous shape, and a second electro-conductive agent having a shape other than the fibrous shape. The active material particles include at least one compound selected from the group consisting of a monoclinic titanium-containing oxide and an orthorhombic titanium-containing composite oxide. The active material-containing layer satisfies formula (1): 0.6?B/A?1.5. A is a thickness [?m] of the active material-containing layer. B is a maximum length [?m] of the first electro-conductive agent in the active material-containing layer.
    Type: Application
    Filed: August 27, 2020
    Publication date: December 17, 2020
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Keigo HOSHINA, Masanori TANAKA, Hironori TAKATSUKA, Yasuhiro HARADA, Norio TAKAMI