公开(公告)号：US20210226194A1

公开(公告)日：2021-07-22

申请号：US16749792

申请日：2020-01-22

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Hideaki NISHIMURA ,  Shigenori HAMA ,  Satoshi MIZUTANI ,  Masataka TOMITA

IPC: H01M4/131 ,  H01M4/136 ,  H01M4/36

Abstract: A main object of the present disclosure is to provide an anode layer with little resistance increase due to charge and discharge. In the present disclosure, the above object is achieved by providing an anode layer comprising: an anode active material including a Nb element, a W element, and an O element; and a solid electrolyte, and an expansion coefficient of the anode active material when charged to 200 mAh per 1 g is 1.4% or more and 5% or less.

公开(公告)号：US20200251717A1

公开(公告)日：2020-08-06

申请号：US16774034

申请日：2020-01-28

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Hideaki NISHIMURA ,  Shigenori HAMA ,  Satoshi MIZUTANI ,  Masataka TOMITA

IPC: H01M4/131 ,  H01M10/0562

Abstract: A main object of the present disclosure is to provide an anode layer with high capacity durability. In the present disclosure, the above object is achieved by providing an anode layer comprising: an anode active material including a Nb element, a W element, and an O element; and a sulfide solid electrolyte.

公开(公告)号：US20190319252A1

公开(公告)日：2019-10-17

申请号：US16285643

申请日：2019-02-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Hideaki NISHIMURA ,  Yuki MATSUSHITA

IPC: H01M2/34 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/0562 ,  H01M4/66

Abstract: In the stacked battery, a short-circuit current shunt part is electrically connected to the electric elements, and an insulating layer of the short-circuit current shunt part is constituted of material having a predetermined melting point or glass transition temperature. When heat is excessively generated in the battery due to internal short circuits etc. and the temperature of the battery reaches the melting point of the insulating layer, the insulating layer melts and its shape is changed to short-circuit the short-circuit current shunt part, and current flows from the electric elements into the short-circuit current shunt part. To measure the current flowing into the short-circuit current shunt part makes it possible to easily grasp excessive heat generation of the battery to suppress deterioration of the battery due to heat generation.

公开(公告)号：US20180316065A1

公开(公告)日：2018-11-01

申请号：US15952450

申请日：2018-04-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Yuki MATSUSHITA ,  Hideaki NISHIMURA ,  Yusuke OKUHATA ,  Norihiro OSE ,  Mitsuru TATEISHI ,  Shigetaka NAGAMATSU ,  Takayuki UCHIYAMA ,  Shigenori HAMA ,  Dai KATO ,  Naohiro MASHIMO ,  Hideyo EBISUZAKI ,  Ayano KOBAYASHI ,  Hisataka FUJIMAKI

IPC: H01M10/42 ,  H01M10/0585 ,  H01M2/26 ,  H01M4/38

Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a short circuit resistance among a plurality of cells, is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector with a cathode current collecting tab, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector with an anode current collecting tab, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and the surface-side cell and the center-side cell satisfy at least one of: condition i) a resistance of the cathode current collecting tab in the surface-side cell is more than a resistance of the cathode current collecting tab in the center-side cell; and condition ii) a resistance of the anode current collecting tab in the surface-side cell is more than a resistance of the anode current collecting tab in the center-side cell.

公开(公告)号：US20240290978A1

公开(公告)日：2024-08-29

申请号：US18403368

申请日：2024-01-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideaki NISHIMURA ,  Toru KIDOSAKI ,  Heidy Hodex VISBAL MENDOZA ,  Hikaru SUGANUMA

IPC: H01M4/62 ,  H01M4/13 ,  H01M10/0562

CPC classification number: H01M4/62 ,  H01M4/13 ,  H01M10/0562 ,  H01M2300/0068

Abstract: An electrode for all-solid-state battery includes a first sulfide solid electrolyte, a second sulfide solid electrolyte, and an active material. The first sulfide solid electrolyte has an LGPS type crystal structure. The second sulfide solid electrolyte is a glass ceramic. A mass fraction of the second sulfide solid electrolyte with respect to a sum of the first sulfide solid electrolyte and the second sulfide solid electrolyte is more than 5% and 20% or less.

公开(公告)号：US20240088386A1

公开(公告)日：2024-03-14

申请号：US18354836

申请日：2023-07-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideaki NISHIMURA ,  Fuminori MIZUNO ,  Keiichi MINAMI ,  Azusa NAKANISHI

IPC: H01M4/58 ,  H01M10/635 ,  H01M50/569

CPC classification number: H01M4/5825 ,  H01M10/635 ,  H01M50/569 ,  H01M2300/0068

Abstract: A secondary battery system of the present disclosure includes a secondary battery and a heating device, wherein the secondary battery includes a positive electrode and a negative electrode, and one or both of the positive electrode and the negative electrode include an active material and a granulated body, the active material includes a material whose volume changes with charge and discharge of the secondary battery, the granulated body includes an inorganic solid electrolyte and an alkali metal-containing salt, and a target heated by the heating device includes the alkali metal-containing salt.

公开(公告)号：US20240079567A1

公开(公告)日：2024-03-07

申请号：US18457930

申请日：2023-08-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hideaki NISHIMURA ,  Shinji NAKANISHI

IPC: H01M4/36 ,  H01M4/60 ,  H01M10/0562

CPC classification number: H01M4/366 ,  H01M4/602 ,  H01M10/0562 ,  H01M2004/027

Abstract: Disclosed is an active material composite particle comprising Si and having excellent cycle characteristics. The active material composite particle of the present disclosure comprises a center portion and a surface layer portion, wherein the center portion comprises a solid electrolyte and a plurality of Si particles, the surface layer portion comprises a polymer and has a carrier ion-conductivity, and a ratio of polymer in the surface layer portion is higher than a ratio of polymer in the center portion.

公开(公告)号：US20180315984A1

公开(公告)日：2018-11-01

申请号：US15952821

申请日：2018-04-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Shigenori HAMA ,  Hideaki NISHIMURA ,  Yuki MATSUSHITA ,  Yusuke OKUHATA ,  Mitsuru TATEISHI ,  Hideyo EBISUZAKI

IPC: H01M2/34 ,  H01M2/26 ,  H01M10/0585

Abstract: Disclosed is a stacked battery that can flow a larger rounding current in a short-circuit current shunt part than in an electric element when a short circuit occurs in the short-circuit current shunt part and the electric element in nailing, the stacked battery in which an electrical resistance of a current collector tab of the short-circuit current shunt part is smaller than an electrical resistance of a current collector tab of the electric element.

公开(公告)号：US20190140311A1

公开(公告)日：2019-05-09

申请号：US16141326

申请日：2018-09-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Hideaki NISHIMURA

IPC: H01M10/0562 ,  H01M4/66 ,  H01M10/42

Abstract: An all-solid state battery including at least one short-circuit current shunt part and a plurality of electric elements, the short-circuit current shunt part and the electric elements being stacked, wherein the shunt part includes a first and a second current collector layers, and an insulating layer between the first and second current collector layers, all being stacked, each of the electric elements includes a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer, all of these layers being stacked, the first current collector layer connected with the cathode current collector layer, the second current collector layer connected with the anode current collector layer, the electric elements are electrically connected with each other in parallel, and a plurality of sheets of metal foil, the one being arranged on a side wherein a nail penetrates in nail penetration testing.

公开(公告)号：US20180316048A1

公开(公告)日：2018-11-01

申请号：US15952301

申请日：2018-04-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Yuki MATSUSHITA ,  Hideaki NISHIMURA ,  Yusuke OKUHATA ,  Norihiro OSE ,  Mitsuru TATEISHI ,  Shigetaka NAGAMATSU ,  Takayuki UCHIYAMA ,  Shigenori HAMA ,  Dai KATO ,  Naohiro MASHIMO ,  Hideyo EBISUZAKI ,  Ayano KOBAYASHI ,  Hisataka FUJIMAKI

IPC: H01M10/0525 ,  H01M4/38

CPC classification number: H01M10/0525 ,  H01M4/134 ,  H01M4/386 ,  H01M4/624 ,  H01M2004/021 ,  H01M2004/027

Abstract: A main object of the present disclosure is to provide a stacked battery in which an unevenness of short circuit resistance among a plurality of cells is suppressed. The present disclosure achieves the object by providing a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; each of the plurality of cells includes a cathode current collector, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector, in this order; the stacked battery includes a surface-side cell that is located on a surface side of the stacked battery, and a center-side cell that is located on a center side rather than the surface-side cell; and the surface-side cell and the center-side cell satisfy at least one of: condition i) an electron conductivity of the cathode active material layer in the surface-side cell is less than an electron conductivity of the cathode active material layer in the center-side cell; and condition ii) an electron conductivity of the anode active material layer in the surface-side cell is less than an electron conductivity of the anode active material layer in the center-side cell.