公开(公告)号：US20240332761A1

公开(公告)日：2024-10-03

申请号：US18587968

申请日：2024-02-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Yohei NOJI ,  Kyohei IZUMI ,  Hiroki ICHIHARA

IPC: H01M50/586 ,  H01M4/02 ,  H01M4/38 ,  H01M50/59

CPC classification number: H01M50/586 ,  H01M4/382 ,  H01M50/59 ,  H01M2004/027

Abstract: The solid-state secondary battery of this invention including an electrode laminate and an outer case to house the electrode laminate, wherein the electrode laminate has a positive electrode layer, a negative electrode layer and a solid electrolyte layer placed between the positive electrode layer and the negative electrode layer, the positive electrode layer has a positive current collector and a positive active material layer, and the circumferences of the positive active material layer and the solid electrolyte layer are surrounded by an insulating frame having a volume resistivity at 20° C. of 1×1012 Ω·cm or more and a porosity of 40% or less.

公开(公告)号：US20240332605A1

公开(公告)日：2024-10-03

申请号：US18586568

申请日：2024-02-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Kyohei IZUMI

IPC: H01M10/0562 ,  H01M10/052 ,  H01M10/0585

CPC classification number: H01M10/0562 ,  H01M10/052 ,  H01M10/0585 ,  H01M2300/0068

Abstract: A solid state battery includes an electrode laminate including an intermediate layer, a first solid electrolyte layer, a positive electrode, and a second solid electrolyte layer sequentially laminated on a negative electrode. The positive electrode includes a positive electrode tab extending therefrom. One of the first solid electrolyte layer or the second solid electrolyte layer includes a porous substrate. One other of the first solid electrolyte layer or the second solid electrolyte layer does not include a porous substrate. When the electrode laminate is viewed from above, outer peripheral ends of the first solid electrolyte layer and the second solid electrolyte layer are located outside an outer peripheral end of the positive electrode, and the first solid electrolyte layer and the second solid electrolyte layer are bonded to each other in a region not opposed to the positive electrode and the positive electrode tab.

公开(公告)号：US20240332589A1

公开(公告)日：2024-10-03

申请号：US18607565

申请日：2024-03-18

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Yohei NOJI ,  Kyohei IZUMI ,  Hiroki ICHIHARA ,  Hayato TAKAHASHI ,  Katsutoshi SAKURAI ,  Fumika FUJISAKI

IPC: H01M10/04

CPC classification number: H01M10/04

Abstract: The invention provides a method for manufacturing a solid-state secondary battery including a multilayer electrode structure including a negative electrode layer, an intermediate layer, a solid electrolyte layer, and a positive electrode layer stacked in order. The method includes a step 1A including pressure-bonding a negative electrode layer and an intermediate layer to form a stack of the negative electrode layer and the intermediate layer; a step 1B including pressure-bonding the intermediate layer of the stack and a solid electrolyte layer to form a stack of the negative electrode layer, the intermediate layer, and the solid electrolyte layer; and a step 1C including pressure-bonding the solid electrolyte layer of the stack and a positive electrode layer to form the multilayer electrode structure.

公开(公告)号：US20240332740A1

公开(公告)日：2024-10-03

申请号：US18586565

申请日：2024-02-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kyohei IZUMI ,  Takashi NAKAGAWA ,  Wataru SHIMIZU ,  Takafumi NAGAI

IPC: H01M50/474 ,  H01M4/13 ,  H01M10/04

CPC classification number: H01M50/474 ,  H01M4/13 ,  H01M10/04

Abstract: A solid state battery includes an electrode laminate including a first solid electrolyte layer, a positive electrode, and a second solid electrolyte layer sequentially laminated on a negative electrode. The positive electrode includes a positive electrode tab extending therefrom. One of the first solid electrolyte layer or the second solid electrolyte layer includes a porous substrate. One other of the first solid electrolyte layer or the second solid electrolyte layer does not include a porous substrate. When the electrode laminate is viewed from above, outer peripheral ends of the first solid electrolyte layer and the second solid electrolyte layer are located outside an outer peripheral end of the positive electrode, and the first solid electrolyte layer and the second solid electrolyte layer are bonded to each other in a region not opposed to the positive electrode and the positive electrode tab.

公开(公告)号：US20240332537A1

公开(公告)日：2024-10-03

申请号：US18621131

申请日：2024-03-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Yohei NOJI ,  Hiroki ICHIHARA ,  Kyohei IZUMI

IPC: H01M4/62 ,  H01M10/0562 ,  H01M50/105 ,  H01M50/471

CPC classification number: H01M4/628 ,  H01M10/0562 ,  H01M50/105 ,  H01M50/471 ,  H01M2300/0068

Abstract: A solid-state secondary battery according to the present invention includes an electrode laminate, and an exterior body accommodating the electrode laminate. The electrode laminate has a positive electrode layer, a negative electrode layer, and a solid electrolyte layer placed between the positive electrode layer and the negative electrode layer. The positive electrode layer includes a positive electrode current collector and a positive electrode active material layer. The solid electrolyte layer has a positive electrode-facing region that faces the positive electrode active material layer, and a positive electrode-non-facing region that does not face the positive electrode layer. The positive electrode-non-facing region has a porosity of lower than 5%.

公开(公告)号：US20240332536A1

公开(公告)日：2024-10-03

申请号：US18621128

申请日：2024-03-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takashi NAKAGAWA ,  Yohei NOJI ,  Hiroki ICHIHARA ,  Kyohei IZUMI

IPC: H01M4/62 ,  H01M50/105 ,  H01M50/474

CPC classification number: H01M4/628 ,  H01M50/105 ,  H01M50/474

Abstract: A solid-state secondary battery of this invention includes: an electrode multilayer; and an exterior case that houses the electrode multilayer, the electrode multilayer includes a positive electrode layer, a negative electrode layer, a solid electrolyte layer arranged between the positive electrode layer and the negative electrode layer and an intermediate layer provided between the negative electrode layer and the solid electrolyte layer, the positive electrode layer includes a positive electrode current collector and a positive electrode active material layer and when the area of the positive electrode active material layer in plan view is Sp, the area of the solid electrolyte layer in plan view is Ss, the area of the intermediate layer in plan view is Sm and the area of the negative electrode layer in plan view is Sn, a relationship of Sp