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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
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%.
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公开(公告)号：US11735777B2
公开(公告)日：2023-08-22
申请号：US17186570
申请日：2021-02-26
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Keigo Hoshina , Kazuomi Yoshima , Yasunobu Yamashita , Yuta Kanai , Yasuhiro Harada , Norio Takami
IPC: H01M10/0587 , H01M4/485 , H01M4/505 , H01M10/0525 , B60L50/64 , H01M4/525
CPC classification number: H01M10/0587 , B60L50/64 , H01M4/485 , H01M4/505 , H01M4/525 , H01M10/0525 , H01M2220/20
Abstract: According to one embodiment, provided is an electrode group including a positive electrode and a negative electrode that includes a titanium-containing oxide. The electrode group has a wound structure of a flat shape, in which a stack including the positive electrode and the negative electrode is wound such that a center of the wound structure lies along a first direction. At least a part of a portion of the negative electrode, positioned within a thickness of 0.2 t from an innermost lap along a longest straight line in a wound cross-section of the wound structure orthogonal to the first direction with respect to a thickness t from the innermost lap to an outermost lap along the longest straight line, includes a slit that lies along the first direction.
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公开(公告)号：US20230299287A1
公开(公告)日：2023-09-21
申请号：US17823818
申请日：2022-08-31
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Hirofumi Yasumiishi , Yuta Kanai , Tetsuya Sasakawa
IPC: H01M4/583 , H01M10/0525 , H01M4/36 , H01M4/525 , H01M4/505
CPC classification number: H01M4/583 , H01M10/0525 , H01M4/366 , H01M4/525 , H01M4/505 , H01M2220/20 , H01M2004/021
Abstract: According to one embodiment, provided is an electrode including an active material-containing layer that includes an active material, inorganic solid particles having lithium ion conductivity, and a carbon material. The active material-containing layer has a first peak corresponding to a maximum log differential intrusion in a log differential intrusion distribution curve according to mercury porosimetry. A pore size diameter D1 at the first peak is 0.05 μm to 10 μm. A first pore volume corresponding to the first peak is 20% to 50% with respect to a total pore volume within the active material-containing layer. A ratio of a second pore volume in a range of 0.005 μm to 0.02 μm relative to the first pore volume is 0.1% to 5%.
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4.发明申请
公开(公告)号：US20190088967A1
公开(公告)日：2019-03-21
申请号：US15907902
申请日：2018-02-28
Applicant: Kabushiki Kaisha Toshiba
Inventor： Taishi Fukazawa , Wu Mei , Yuta Kanai
IPC: H01M8/1004 , H01M8/242 , H01M8/04291 , H01M4/64 , H01M4/88
Abstract: An electrode of an embodiment includes a catalyst layer having pores. A mode diameter of the pores is 10 μm or more and 100 μm or less.
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公开(公告)号：US11650262B2
公开(公告)日：2023-05-16
申请号：US17665141
申请日：2022-02-04
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Ryosuke Yagi , Yuta Kanai , Norihiro Yoshinaga , Shuichi Uchikoga
IPC: G01R31/392 , G01R31/389 , G01R31/36 , H01M10/0525
CPC classification number: G01R31/392 , G01R31/3648 , G01R31/389 , H01M10/0525
Abstract: In an embodiment, an aging determination method of a battery as a target of determination is provided. With regard to a target electrode which is at least one of a positive electrode and a negative electrode of the battery, the method estimates a correction coefficient to correct a difference between lithium concentration distributions in the target electrode at a time of charging with a first electric current and at a time of charging with a second electric current greater than the first electric current based on a difference between electric potentials of a target electrode at the time of charging with the first electric current and at the time of charging with the second electric current, and an impedance of the target electrode at the time of charging with the second electric current.
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公开(公告)号：US20220381845A1
公开(公告)日：2022-12-01
申请号：US17665141
申请日：2022-02-04
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Ryosuke Yagi , Yuta Kanai , Norihiro Yoshinaga , Shuichi Uchikoga
IPC: G01R31/392 , H01M10/0525 , G01R31/36 , G01R31/389
Abstract: In an embodiment, an aging determination method of a battery as a target of determination is provided. With regard to a target electrode which is at least one of a positive electrode and a negative electrode of the battery, the method estimates a correction coefficient to correct a difference between lithium concentration distributions in the target electrode at a time of charging with a first electric current and at a time of charging with a second electric current greater than the first electric current based on a difference between electric potentials of a target electrode at the time of charging with the first electric current and at the time of charging with the second electric current, and an impedance of the target electrode at the time of charging with the second electric current.
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公开(公告)号：US20220149363A1
公开(公告)日：2022-05-12
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
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%.
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公开(公告)号：US11094954B2
公开(公告)日：2021-08-17
申请号：US15907902
申请日：2018-02-28
Applicant: Kabushiki Kaisha Toshiba
Inventor： Taishi Fukazawa , Wu Mei , Yuta Kanai
IPC: H01M8/1004 , H01M8/242 , H01M8/04291 , H01M4/88 , H01M4/64 , H01M4/86 , H01M8/0245 , H01M8/1018
Abstract: An electrode of an embodiment includes a catalyst layer having pores. A mode diameter of the pores is 10 μm or more and 100 μm or less. The catalyst layer may have a thickness of 0.05 μm or more and 3.0 μm or less. A value of the mode diameter of the pores may three times or more a value of a thickness of the catalyst layer.
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公开(公告)号：US10883180B2
公开(公告)日：2021-01-05
申请号：US15915390
申请日：2018-03-08
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Akihiko Ono , Takuya Hongo , Masakazu Yamagiwa , Yuki Kudo , Satoshi Mikoshiba , Norihiro Yoshinaga , Yuta Kanai , Jun Tamura
IPC: C25B1/06 , C25B9/12 , C08L27/18 , H01M2/16 , C25B9/08 , C25B13/08 , C25B15/00 , C25B1/00 , C25B11/03 , C01B32/40 , C25B3/04
Abstract: An electrochemical reaction device, comprises: an anode to oxidize a first substance; a first flow path facing on the anode and through which a liquid containing the first substance flows; a cathode to reduce a second substance; a second flow path facing on the cathode and through which a gas containing the second substance flows; a porous separator provided between the anode and the cathode; and a power supply connected to the anode and the cathode. A thickness of the porous separator is 1 μm or more and 500 μm or less. An average fine pore size of the porous separator is larger than 0.008 μm and smaller than 0.45 μm. A porosity of the porous separator is higher than 0.5.
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公开(公告)号：US12224437B2
公开(公告)日：2025-02-11
申请号：US17668475
申请日：2022-02-10
Applicant: KABUSHIKI KAISHA TOSHIBA
Inventor： Arisa Yamada , Tomoe Kusama , Tomoko Sugizaki , Yuta Kanai , Hirofumi Yasumiishi , Tetsuya Sasakawa , Yasuhiro Harada
IPC: H01M4/525 , H01M4/02 , H01M4/04 , H01M4/131 , H01M4/134 , H01M4/1391 , H01M4/1395 , H01M10/0525
Abstract: According to one embodiment, a method of producing a secondary battery is provided. The method includes preparing a battery architecture including a positive electrode, a negative electrode, and an electrolyte; adjusting a positive electrode potential to a range of 3.4 V to 3.9 V and a negative electrode potential to a range of 1.5 V to 2.0 V based on an oxidation-reduction potential of lithium, thereby providing a potential adjusted state; and holding the battery architecture in the potential adjusted state at a holding temperature of 50° C. to 90° C. The positive electrode includes a lithium-nickel-cobalt-manganese composite oxide. The negative electrode includes a niobium-titanium composite oxide. The electrolyte includes one or more first organic solvent having a viscosity of 1 cP or less.
