公开(公告)号：US20240222688A1

公开(公告)日：2024-07-04

申请号：US18393694

申请日：2023-12-22

Applicant: HONDA MOTOR CO., LTD.

Inventor： Tomohiro KINOSHITA ,  Wataru SHIMIZU ,  Wataru HOSHIKAWA

IPC: H01M10/0525 ,  H02J7/00

CPC classification number: H01M10/0525 ,  H02J7/007188

Abstract: It is an object of the present disclosure to provide a method for controlling a lithium secondary battery capable of more safely eliminating a dendrite deposition state. To achieve the object, the present disclosure provides a method for controlling a lithium secondary battery. The method includes detecting presence or absence of dendrite deposition on a negative electrode of the lithium secondary battery, performing high-rate discharge by a discharge controller for controlling a discharge amount of the lithium secondary battery when the dendrite deposition is detected, and increasing a restraint pressure of the lithium secondary battery by a restraint pressure controller for controlling the restraint pressure of the lithium secondary battery after performing the high-rate discharge.

公开(公告)号：US20250023176A1

公开(公告)日：2025-01-16

申请号：US18767998

申请日：2024-07-10

Applicant: HONDA MOTOR CO., LTD.

Inventor： Tomohiro KINOSHITA ,  Wataru SHIMIZU ,  Wataru HOSHIKAWA

IPC: H01M50/242 ,  H01M50/211 ,  H01M50/289

Abstract: A secondary battery module according to an embodiment of the present invention includes: a battery stack in which a plurality of secondary batteries are laminated, and a pair of end plates disposed at both ends in a lamination direction of the battery stack, further including a buffer material disposed at least between either the secondary batteries which are adjacent, or the battery stack and the end plate, in which, in a first direction that is orthogonal to the lamination direction of the battery stack, one end of the buffer material is established as a thick wall part having a large length in the lamination direction, and the other end is established as a thin wall part having a smaller length in the lamination direction than the thick wall part.

公开(公告)号：US20230318027A1

公开(公告)日：2023-10-05

申请号：US18181562

申请日：2023-03-10

Applicant: HONDA MOTOR CO., LTD.

Inventor： Pu QIAN ,  Akihiro YOSHIZAWA ,  Wataru SHIMIZU ,  Atsushi OGAWA

IPC: H01M10/0562 ,  H01M4/62

CPC classification number: H01M10/0562 ,  H01M4/622 ,  H01M2300/0068

Abstract: To provide an electrode material mixture slurry which can enhance the uniformity of electrode materials in a solid-state cell and obtain a preferred mechanical strength of an electrode layer that is formed. An electrode material mixture slurry for manufacturing a solid-state cell electrode, comprising: a solid electrolyte, an electrode active material, a binder, and a solvent, the solid electrolyte being at least one of a sulfide or an oxide, the binder being a polymer binder which includes an unsaturated carbon-carbon bond.

公开(公告)号：US20240304961A1

公开(公告)日：2024-09-12

申请号：US18586547

申请日：2024-02-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Hiroshi SAKAI ,  Hiroshi OGASA ,  Wataru SHIMIZU

IPC: H01M50/581 ,  H01M4/134 ,  H01M4/38 ,  H01M4/66 ,  H01M10/04 ,  H01M10/052 ,  H01M50/489

CPC classification number: H01M50/581 ,  H01M4/134 ,  H01M4/382 ,  H01M4/661 ,  H01M10/0481 ,  H01M10/052 ,  H01M50/489

Abstract: A lithium secondary battery of the present invention comprises: a positive electrode comprising a positive electrode current collector and a positive electrode material mixture layer, a negative electrode comprising a negative electrode current collector and a lithium metal foil, and a separator, and further comprises a thermally deformable separator disposed in the vicinity of the positive electrode material mixture layer on the surface of the positive electrode current collector, and an extension portion that extends from the lithium metal foil so as to be in contact with the thermally deformable separator; the thermally deformable separator having a melting point of 80° C. or higher, which is equal to or lower than the melting point of lithium metal; and when a thermally deformable separator 31 thermally deforms, the extension portion comes into contact with the positive electrode current collector, resulting in a short circuit of the positive electrode and the negative electrode.

公开(公告)号：US20230318028A1

公开(公告)日：2023-10-05

申请号：US18189230

申请日：2023-03-24

Applicant: HONDA MOTOR CO., LTD.

Inventor： Akihiro YOSHIZAWA ,  Wataru SHIMIZU

IPC: H01M10/0562 ,  H01M4/36 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M4/366 ,  H01M10/0525

Abstract: To provide a solid-state secondary battery that is superior in output characteristics and durability characteristics, and with which preferable durability is acquired. A solid-state secondary battery includes a negative electrode layer, a positive electrode layer, and a solid electrolyte layer. The solid electrolyte layer contains a binding material. The binding material is contained in a greater amount on a side closer to the negative electrode layer and a side closer to the positive electrode layer than sides closer to the center in thickness directions in the solid electrolyte layer.

公开(公告)号：US20210296688A1

公开(公告)日：2021-09-23

申请号：US17200891

申请日：2021-03-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Wataru SHIMIZU ,  Masahiro OHTA

IPC: H01M10/0562 ,  H01M50/186 ,  H01M10/0585

Abstract: To provide an electrical storage device in which a positive electrode material and a negative electrode material are each impregnated with a different type of electrolytic solution and a method for making the same. An electrical storage device (1) includes a negative electrode (2) including an organic electrolytic solution (21), a positive electrode (3) including an aqueous electrolytic solution (31), and a solid electrolyte (4) disposed between the negative electrode (2) and the positive electrode (3). The negative electrode (2) is entirely sealed. The electrical storage device (1) includes a sealing member (5), which is provided at the periphery of the negative electrode (2) and seals the negative electrode (2). The solid electrolytes (4) form a pair including a sealing material and together with the sealing member (5) seal the negative electrode (2) so that the negative electrode (2) is disposed between the solid electrolytes (4).

公开(公告)号：US20210292918A1

公开(公告)日：2021-09-23

申请号：US17203738

申请日：2021-03-16

Applicant: HONDA MOTOR CO., LTD.

Inventor： Wataru SHIMIZU ,  Toru SUKIGARA

IPC: C25B1/04 ,  B01J39/12 ,  C25B9/23 ,  C25C3/02

Abstract: The present disclosure is intended to provide an electrolyzer capable of selectively recovering lithium. The electrolyzer recovers lithium ions Li+ from a material M. The electrolyzer includes: a pair of electrodes; and a cation exchange membrane provided between the pair of electrodes and having a lithium ion conductivity. The cation exchange membrane allows, among cations contained in the material M, more lithium ions Li+ to pass therethrough than other cations Ca2+ and Na+. The electrolyzer is configured to apply a voltage between the pair of electrodes.

公开(公告)号：US20240322409A1

公开(公告)日：2024-09-26

申请号：US18585077

申请日：2024-02-23

Applicant: HONDA MOTOR CO., LTD.

Inventor： Wataru SHIMIZU ,  Hiroshi SAKAI ,  Masataka FURUYAMA ,  Takafumi NAGAI ,  Wataru HOSHIKAWA

IPC: H01M50/618 ,  H01M50/451 ,  H01M50/48

CPC classification number: H01M50/618 ,  H01M50/451 ,  H01M50/48 ,  H01M2200/10

Abstract: A battery module including a battery cell stack in which a plurality of battery cells is stacked, a container filled with a liquid and containing the battery cell stack, and a pressurizer for pressurizing the liquid that is filled in the container. The battery cells are solid-state battery cells. The battery cell stack is packaged with a packaging material. The liquid contains an oil and a heat-absorbing material. The heat-absorbing material has an endothermic reaction initiation temperature of 80° C. or greater and 190° C. or less.

公开(公告)号：US20200212450A1

公开(公告)日：2020-07-02

申请号：US16726913

申请日：2019-12-25

Applicant: Honda Motor Co.,Ltd.

Inventor： Wataru SHIMIZU ,  Ushio HARADA ,  Hiroto MAEYAMA ,  Atsushi OGAWA ,  Soshi KAWAMURA ,  Masahiro OHTA

IPC: H01M4/80 ,  H01M4/76 ,  H01M4/66 ,  H01M10/0525 ,  H01M4/13

Abstract: The disclosure provides an electrode for solid state battery and a solid state battery, wherein the electrode using a foamed metal as a collector has excellent mechanical strength and can maintain the insulation from a counter electrode when constituting the solid state battery. In the electrode for solid state battery, which uses a collector composed of a foamed porous body that has a mesh structure, a layer that achieves reinforcement and insulation is provided in the boundary between a filled part filled with an electrode mixture and an unfilled part.

公开(公告)号：US20200152992A1

公开(公告)日：2020-05-14

申请号：US16676459

申请日：2019-11-07

Applicant: Honda Motor Co.,Ltd.

Inventor： Wataru SHIMIZU ,  Ushio HARADA ,  Hiroto MAEYAMA ,  Atsushi OGAWA ,  Soshi KAWAMURA ,  Masahiro OHTA

IPC: H01M4/80 ,  H01M10/0585 ,  H01M4/62 ,  H01M4/36 ,  H01M4/66

Abstract: The disclosure provides an electrode for solid state battery, a solid state battery, and a manufacturing method of the electrode for solid state battery. The electrode for solid state battery uses a foamed porous body as the collector. When the electrode constitutes the solid state battery, the obtained battery has low resistance, high battery capacity per unit area, and high output. A collector composed of a foamed porous body is filled with an electrode mixture by differential pressure filling to obtain an electrode, in which the content rate of an organic polymer compound is low.