公开(公告)号：US20220302502A1

公开(公告)日：2022-09-22

申请号：US17462410

申请日：2021-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tetsuya SASAKAWA ,  Tomoe KUSAMA ,  Tomoko SUGIZAKI ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M10/0569 ,  H01M4/485 ,  H01M10/42 ,  H01M4/58

Abstract: According to one embodiment, a secondary battery includes a positive electrode, a negative electrode, a separator layer, and a nonaqueous electrolytic solution. The separator layer includes a first porous layer containing a solid electrolyte and a second porous layer containing fibers. The second porous layer is in contact with a first surface of the first porous layer. The nonaqueous electrolytic solution includes a first solvent including at least one of methyl propionate and ethyl propionate, and a second solvent different from the first solvent. The first porous layer has a void fraction of 10% by volume or greater and 50% by volume or less. The second porous layer has a void fraction greater than the void fraction of the first porous layer.

公开(公告)号：US20220077510A1

公开(公告)日：2022-03-10

申请号：US17186050

申请日：2021-02-26

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Takashi KISHI ,  Taro FUKAYA ,  Kazuomi YOSHIMA ,  Yasunobu YAMASHITA

IPC: H01M10/44 ,  H02J7/00

Abstract: According to a management method in an embodiment, in charging of a battery in each of a constant current mode and a constant power mode, it is determined that the battery is unusable based on a voltage of the battery dropping by a voltage threshold value or more from a starting time of dropping without increasing again to a voltage value at the starting time of dropping. In the management method, in charging of the battery in a constant voltage mode, it is determined that the battery is unusable based on a current supplied to the battery increasing by a current threshold value or more from a starting time of increasing without dropping again to a current value at the starting time of increasing.

公开(公告)号：US20210376307A1

公开(公告)日：2021-12-02

申请号：US17155343

申请日：2021-01-22

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yasuhiro HARADA ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M4/131 ,  H01M4/134 ,  H01M10/0525 ,  C01G33/00

Abstract: According to one embodiment, an electrode material is provided. The electrode material includes active material particle containing: a niobium-titanium composite oxide having an average composition in which a molar ratio of niobium to titanium (MNb/MTi) is greater than 2; and at least one element A selected from the group consisting of potassium, iron and phosphorus. The active material particle contain the element A at a concentration in the range of 100 ppm to 2000 ppm.

公开(公告)号：US20200091499A1

公开(公告)日：2020-03-19

申请号：US16289009

申请日：2019-02-28

Applicant: KABUSHIKI KAISHA TOSHIBA ,  Toshiba Infrastructure Systems & Solutions Corporation

Inventor： Kazuomi YOSHIMA ,  Yasunobu YAMASHITA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M4/131 ,  H01M10/0525 ,  H01M4/62 ,  H01M10/0562 ,  H01M10/0566 ,  H01M10/42 ,  B60L50/64 ,  B60L7/10

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.

公开(公告)号：US20190296351A1

公开(公告)日：2019-09-26

申请号：US16122091

申请日：2018-09-05

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Kazuomi YOSHIMA ,  Yasuhiro Harada ,  Norio Takami

IPC: H01M4/583 ,  H01M4/485 ,  H01M10/0525 ,  H01M10/42 ,  H01M2/10 ,  H01M2/30 ,  H01M4/66

Abstract: According to one embodiment, an electrode is provided. The electrode includes a current collector and an active material-containing layer. The active material-containing layer includes an active material complex and a conductive agent. The active material complex includes particles of a niobium-titanium composite oxide and a carbon-containing layer. The carbon-containing layer covers at least one part of surfaces of the particles of the niobium-titanium composite oxide. A resistance value ρs·S satisfies the following formula (1). The resistance value ρs·S is calculated from a specific surface area S (m2/g) of the active material complex by a nitrogen BET method and a sheet resistance value ρs (Ω/m2) of the electrode. 1 Ω/g≤ρs·S≤50 Ω/g  (1)

公开(公告)号：US20190296306A1

公开(公告)日：2019-09-26

申请号：US16119028

申请日：2018-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoko SUGIZAKI ,  Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M2/16 ,  H01M10/42 ,  H01M10/0525 ,  H01M4/485 ,  H01M4/48 ,  H01M10/0562 ,  B60R16/033

Abstract: According to one embodiment, an electrode group is provided. The separator is positioned at least between the positive electrode and the negative electrode. The separator includes a layer, first solid electrolyte particles, and second solid electrolyte particles. The layer includes organic fibers. The first solid electrolyte particles are in contact with the organic fibers and the positive electrode active material-containing layer. The second solid electrolyte particles are in contact with the organic fibers and the negative electrode active material-containing layer.

公开(公告)号：US20190260075A1

公开(公告)日：2019-08-22

申请号：US16119095

申请日：2018-08-31

Applicant: Kabushiki Kaisha Toshiba

Inventor： Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M10/0565 ,  H01M10/42 ,  H01M10/0525 ,  H01M4/62 ,  B60L11/18

Abstract: A plurality of inorganic compound particles contain a solvent, wherein a weight ratio of the solvent to the inorganic compound particles is greater than or equal to 8 weight % and less than or equal to 25 weight %; the inorganic compound particles having a lithium ion conductivity at 25° C. that is greater than or equal to 1×10-10 S/cm; and an average particle diameter of the inorganic compound particles is greater than or equal to 0.1 μm and less than or equal to 5 μm.

公开(公告)号：US20190088927A1

公开(公告)日：2019-03-21

申请号：US15913336

申请日：2018-03-06

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tomoe KUSAMA ,  Yasuhiro HARADA ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M4/131 ,  H01M10/0525 ,  H01M10/44

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.

公开(公告)号：US20180277904A1

公开(公告)日：2018-09-27

申请号：US15691879

申请日：2017-08-31

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Tetsuya SASAKAWA ,  Kazuomi YOSHIMA ,  Yasuhiro HARADA ,  Norio TAKAMI

IPC: H01M10/42 ,  H01M2/10 ,  H01M10/0585

CPC classification number: H01M10/4257 ,  H01M2/021 ,  H01M2/1077 ,  H01M2/24 ,  H01M10/0413 ,  H01M10/0463 ,  H01M10/052 ,  H01M10/0585 ,  H01M2010/4271 ,  H01M2220/20

Abstract: In one embodiment, a secondary battery includes, electrode groups, an insulating sheet, and a container member. The insulating sheet is disposed between the electrode groups. At least part of the insulating sheet is joined to the container member. The container member covers the outside of a stack having the electrode groups and the insulating sheet.

公开(公告)号：US20160276663A1

公开(公告)日：2016-09-22

申请号：US15066710

申请日：2016-03-10

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Yorikazu YOSHIDA ,  Yasuhiro HARADA ,  Kazuki ISE ,  Kazuomi YOSHIMA ,  Norio TAKAMI

IPC: H01M4/485 ,  H01M4/36 ,  H01M10/052 ,  H01M4/62

CPC classification number: H01M4/485 ,  H01M4/364 ,  H01M4/366 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/021

Abstract: In general, according to one embodiment, there is provided an electrode. The electrode includes a current collector, a first electrode mixture layer formed on the current collector, and a second electrode mixture layer formed on the first electrode mixture layer. The first electrode mixture layer contains a niobium-titanium composite oxide that has a monoclinic crystal structure. The second electrode mixture layer contains a lithium titanate that has a spinel-type crystal structure.

Abstract translation: 通常，根据一个实施例，提供了一种电极。 电极包括集电体，形成在集电体上的第一电极混合物层和形成在第一电极混合物层上的第二电极混合物层。 第一电极混合物层含有具有单斜晶体结构的铌 - 钛复合氧化物。 第二电极混合物层含有具有尖晶石型晶体结构的钛酸锂。