公开(公告)号：US12224435B2

公开(公告)日：2025-02-11

申请号：US17580529

申请日：2022-01-20

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Ryosuke Yagi ,  Yasuhiro Harada ,  Norio Takami ,  Tetsuya Sasakawa ,  Norihiro Yoshinaga ,  Yuta Kanai

IPC: H01M4/485 ,  H01M4/02 ,  H01M4/583

Abstract: According to a storage battery of an embodiment includes a first battery module and a second battery module connected in parallel with the first battery module. The number of first cells connected in series in the first battery module is M, and the number of second cells connected in series in the second battery module is N. When an open circuit voltage at SOC=X % of the first cells and the second cells are Va1 (X) and Va2 (X), respectively, the voltages of the battery modules are M×Va1 (X) N×Va2 (X) in the range where the SOC of the cell is 70% to 100%.

公开(公告)号：US12113212B2

公开(公告)日：2024-10-08

申请号：US17650784

申请日：2022-02-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro Harada ,  Yoshiaki Murata ,  Kazuki Ise ,  Norio Takami

IPC: H01M4/485 ,  H01M4/02

CPC classification number: H01M4/485 ,  H01M2004/027 ,  H01M2220/20

Abstract: According to one embodiment, provided is an active material including a crystal particle that includes a niobium-titanium composite oxide. A ratio ANb/ATi of a Nb abundance ANb to a Ti abundance ATi in the crystal particle satisfies 2.3≤ANb/ATi≤4.0. According to a powder X-ray diffraction spectrum using a Cu-Kα ray for the crystal particle, an intensity ratio Iβ/Iα of a peak intensity Iβ of a peak β appearing at 12.5°≤2θ≤13.0° to a peak intensity Iα of a peak α appearing at 8.5°≤2θ≤9.0° is within a range of 0.1

公开(公告)号：US11888160B2

公开(公告)日：2024-01-30

申请号：US16289123

申请日：2019-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio Takami ,  Kazuomi Yoshima ,  Takuya Iwasaki ,  Tomoko Sugizaki ,  Yasuhiro Harada

IPC: H01M4/36 ,  H01M4/62 ,  H01M10/0525 ,  C01G23/00 ,  H01M4/485 ,  H01M10/42 ,  H01M10/44 ,  H01M4/131 ,  H01M4/13 ,  H01M50/44 ,  H01M50/429 ,  B60L50/64 ,  H01M4/02 ,  H01M4/505 ,  H01M4/525

CPC classification number: H01M4/62 ,  B60L50/64 ,  C01G23/003 ,  H01M4/13 ,  H01M4/131 ,  H01M4/366 ,  H01M4/485 ,  H01M4/622 ,  H01M10/0525 ,  H01M10/425 ,  H01M10/44 ,  H01M50/4295 ,  H01M50/44 ,  H01M4/505 ,  H01M4/525 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2010/4271 ,  H01M2220/20

Abstract: According to one embodiment, there is provided an electrode including active material particles, polymer fibers and inorganic solid particles. The polymer fibers have an average fiber diameter of 1 nm to 100 nm.

公开(公告)号：US20220352512A1

公开(公告)日：2022-11-03

申请号：US17679005

申请日：2022-02-23

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoe KUSAMA ,  Kazuomi Yoshima ,  Tetsuya Sasakawa ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/525 ,  H01M4/485 ,  H01M4/04 ,  H01M4/62

Abstract: According to one embodiment, a slurry composition includes an active material, a conductive agent, a resin material, and a solvent comprising water. The active material includes niobium titanium-containing composite oxide particles. In a volume-based cumulative frequency distribution of particle sizes based on a particle size distribution of the slurry composition according to a laser diffraction-scattering method, a peak is positioned within a range of 0.8 μm to 3 μm, and a percentage of cumulative frequency up to a particle size of 1 μm from a smaller particle size is in a range of 20% to 35%.

公开(公告)号：US11362366B2

公开(公告)日：2022-06-14

申请号：US15688215

申请日：2017-08-28

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kazuomi Yoshima ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M10/0565 ,  H01M10/056 ,  H01M10/0585 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/58

Abstract: The present invention is provided to reduce the influence of expansion and contraction of an active material, form a favorable interface between the solid electrolyte and the active material, and increase ion conductivity in the electrolyte, thereby obtaining a wide operation temperature range. A secondary battery composite electrolyte includes an inorganic compound having an Li ion conductivity at room temperature that is 1×10−10 S/cm or more and having particle diameter of 0.05 μm or more and less than 8 μm, and an organic electrolyte. The weight ratio between the organic electrolyte and the inorganic compound is 0.1% or more and 20% or less.

公开(公告)号：US11329316B2

公开(公告)日：2022-05-10

申请号：US15688169

申请日：2017-08-28

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yasuhiro Harada ,  Norio Takami ,  Kazuomi Yoshima

IPC: H01M10/0565 ,  H01M10/0585 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/58 ,  H01M4/02

Abstract: The present invention is provided to reduce the influence of expansion and contraction of an active material, form a favorable interface between a solid electrolyte and an active material, and improve the high temperature durability and cycle lifespan of a battery. A secondary battery composite electrolyte includes an inorganic compound having an Li ion conductivity at 25° C. that is less than 1×10−10 S/cm and an organic electrolyte. The weight ratio between the organic electrolyte and the inorganic compound is 0.1% or more and 20% or less.

公开(公告)号：US11251414B2

公开(公告)日：2022-02-15

申请号：US15913021

申请日：2018-03-06

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Norio Takami ,  Kazuomi Yoshima ,  Takuya Iwasaki ,  Tomoko Sugizaki ,  Tomoe Kusama ,  Yasuhiro Harada

IPC: H01M4/131 ,  H01M50/429 ,  H01M50/44 ,  H01M50/446 ,  H01M50/46 ,  H01M10/0525 ,  H01M50/449 ,  H01M10/44 ,  H01M4/485 ,  H01M4/02 ,  H01M10/056

Abstract: According to one embodiment, an electrode group includes a positive electrode active material-containing layer, a negative electrode active material-containing layer, a lithium ion conductive layer, and a porous layer. The lithium ion conductive layer includes lithium-containing inorganic particles. The lithium ion conductive layer covers at least part of the positive electrode active material-containing layer. The porous layer covers at least part of the negative electrode active material-containing layer. The positive electrode active material-containing layer and the negative electrode active material-containing layer face each other via the lithium ion conductive layer and the porous layer.

公开(公告)号：US11139476B2

公开(公告)日：2021-10-05

申请号：US16559260

申请日：2019-09-03

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tetsuya Sasakawa ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/505 ,  H01M4/131 ,  H01M10/0525 ,  H01M10/42 ,  B60L50/64 ,  B60L7/10 ,  H01M4/525 ,  H01M4/46 ,  H01M50/20 ,  H01M4/134 ,  H01M4/36 ,  H01M4/62 ,  H01M4/02 ,  H01M50/509

Abstract: According to one embodiment, there is provided an active material represented by a general formula Lix(NiaCobMncMd)1−s(Nb1−tTat)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, 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, and 0.0005≤t≤0.1 are satisfied.

公开(公告)号：US20210083298A1

公开(公告)日：2021-03-18

申请号：US16787232

申请日：2020-02-11

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoko Sugizaki ,  Tetsuya Sasakawa ,  Kazuomi Yoshima ,  Tomoe Kusama ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/66 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525

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%.

公开(公告)号：US10707523B2

公开(公告)日：2020-07-07

申请号：US15455346

申请日：2017-03-10

Applicant: Kabushiki Kaisha Toshiba

Inventor： Yasuhiro Harada ,  Tomoe Kusama ,  Norio Takami ,  Kazuomi Yoshima

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/485 ,  C01B25/45

Abstract: According to one embodiment, there is provided a solid electrolyte including an oxide represented by General Formula Li1+2xM12−x(Ca1−yM2y)x(PO4)3. In the General Formula above, M1 is at least one selected from the group consisting of Zr and Hf. M2 is at least one selected from the group consisting of Sr and Ba. x satisfies 0