公开(公告)号：US20220021000A1

公开(公告)日：2022-01-20

申请号：US17375519

申请日：2021-07-14

Applicant: Toyota Jidosha Kabushiki Kaisha ,  Toyo Kohan Co., Ltd.

Inventor： Hajime Hasegawa ,  Shigetaka Nagamatsu ,  Shinichirou Horie ,  Koh Yoshioka ,  Toshifumi Koyanagi ,  Etsuro Tsutsumi ,  Michio Kawamura ,  Yuma Yoshizaki

IPC: H01M4/66 ,  H01M10/0562 ,  H01M4/36

Abstract: Provided is a sulfide all-solid battery having an anode current collector of powerful adhesiveness which is difficult to be sulfurized. The sulfide all-solid-state battery including: a cathode layer; an anode layer; and a sulfide solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the anode layer has an anode mixture layer, and an anode current collector on a face of the anode mixture layer, the face being on an opposite side of the sulfide solid electrolyte layer, the anode current collector is electrolytic iron foil that does not substantially contain other elements, and the anode current collector has surface roughness Ra of 0.2 μm to 0.6 μm, and surface roughness Rz of 2 μm to 6 μm.

公开(公告)号：US12021243B2

公开(公告)日：2024-06-25

申请号：US17375519

申请日：2021-07-14

Applicant: Toyota Jidosha Kabushiki Kaisha ,  Toyo Kohan Co., Ltd.

Inventor： Hajime Hasegawa ,  Shigetaka Nagamatsu ,  Shinichirou Horie ,  Koh Yoshioka ,  Toshifumi Koyanagi ,  Etsuro Tsutsumi ,  Michio Kawamura ,  Yuma Yoshizaki

IPC: H01M4/66 ,  H01M4/36 ,  H01M10/0562

CPC classification number: H01M4/661 ,  H01M4/364 ,  H01M4/666 ,  H01M10/0562

Abstract: Provided is a sulfide all-solid battery having an anode current collector of powerful adhesiveness which is difficult to be sulfurized. The sulfide all-solid-state battery including: a cathode layer; an anode layer; and a sulfide solid electrolyte layer disposed between the cathode layer and the anode layer, wherein the anode layer has an anode mixture layer, and an anode current collector on a face of the anode mixture layer, the face being on an opposite side of the sulfide solid electrolyte layer, the anode current collector is electrolytic iron foil that does not substantially contain other elements, and the anode current collector has surface roughness Ra of 0.2 μm to 0.6 μm, and surface roughness Rz of 2 μm to 6 μm.

公开(公告)号：US11302953B2

公开(公告)日：2022-04-12

申请号：US15952332

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 ,  H01M4/66 ,  H01M4/38 ,  H01M10/42 ,  H01M4/02

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 a contact resistance between the cathode current collector and the anode current collector in the surface-side cell is more than a contact resistance between the cathode current collector and the anode current collector in the center-side cell.

公开(公告)号：US10559845B2

公开(公告)日：2020-02-11

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: H01M10/00 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/02

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.

公开(公告)号：US11075409B2

公开(公告)日：2021-07-27

申请号：US15952493

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: H01M10/04 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/42 ,  H01M4/02 ,  H01M4/38 ,  H01M4/64

Abstract: A main object of the present disclosure is to provide a stacked battery in which the 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 elongation rate of the cathode current collector in the surface-side cell is less than an elongation rate of the cathode current collector in the center-side cell; and condition ii) an elongation rate of the anode current collector in the surface-side cell is less than an elongation rate of the anode current collector in the center-side cell.

公开(公告)号：US10910677B2

公开(公告)日：2021-02-02

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: H01M2/26 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/42 ,  H01M4/38 ,  H01M4/02 ,  H01M10/052

Abstract: An objective of the present disclosure is to provide a stacked battery that suppresses sneak current caused by an unevenness of a short circuit resistance among a plurality of cells. The present disclosure provides a stacked battery comprising: a plurality of cells in a thickness direction, wherein the plurality of cells are electrically connected in parallel; 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; wherein 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; or 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.