公开(公告)号：US20240332484A1

公开(公告)日：2024-10-03

申请号：US18583880

申请日：2024-02-22

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masanari HIGUCHI ,  Masahiro OHTA

IPC: H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/0409 ,  H01M4/0435 ,  H01M4/622 ,  H01M4/661 ,  H01M10/0525

Abstract: An object is to provide a method for manufacturing a non-aqueous secondary battery electrode in which a bonding between the positive electrode layer and a solid electrolyte layer can be made more continuous or stronger. A method for manufacturing a non-aqueous secondary battery electrode includes: preparing a positive electrode layer solution that includes a positive electrode active material, a binder and a first solvent; forming a positive electrode layer using the positive electrode layer solution; forming an electrolyte layer that includes a solid electrolyte; preparing an adhesive layer solution that includes a solid electrolyte and a second solvent; forming an adhesive layer using the adhesive layer solution; and stacking the positive electrode layer, the adhesive layer and the electrolyte layer in this order, and the second solvent has a higher solubility for the binder than the first solvent.

公开(公告)号：US20240266497A1

公开(公告)日：2024-08-08

申请号：US18429441

申请日：2024-02-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masanari HIGUCHI ,  Masahiro OHTA

IPC: H01M4/13 ,  H01M4/02 ,  H01M4/36 ,  H01M4/62 ,  H01M10/0585

CPC classification number: H01M4/13 ,  H01M4/366 ,  H01M4/62 ,  H01M10/0585 ,  H01M2004/028 ,  H01M2300/0065

Abstract: A positive electrode for a secondary battery capable of improving lithium ion conductivity and bonding strength with a solid electrolyte layer. The positive electrode for a secondary battery, includes a positive electrode current collector and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material. The positive electrode active material is in contact with a solid electrolyte having a median diameter of 150 nm or less.

公开(公告)号：US20230268622A1

公开(公告)日：2023-08-24

申请号：US18308682

申请日：2023-04-28

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M50/533 ,  H01M10/058 ,  H01M10/0562

CPC classification number: H01M50/533 ,  H01M10/0562 ,  H01M10/058

Abstract: Provided is a battery cell that can effectively overcome problems caused by known battery cells having an outer jacket constituted by one folded film. A battery cell includes a battery, and an outer jacket accommodating the battery. At least one end face of the battery is connected to a current-collecting tab lead. The outer jacket is constituted by one film which is folded along another end face of the battery different from the end face connected to the current-collecting tab lead, and end portions of which are joined to each other such that the current-collecting tab lead is sandwiched between the end portions. The outer jacket has a hole at a position adjacent to the end face connected to the current-collecting tab lead, the hole being blocked.

公开(公告)号：US20220320589A1

公开(公告)日：2022-10-06

申请号：US17676246

申请日：2022-02-21

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro OHTA ,  Kosei MIYATA ,  Yohei NOJI

IPC: H01M10/0585 ,  H01M10/04

Abstract: A battery cell capable of: holding an electrode laminate uniformly and improving lamination dislocation as well as the durability of an electrode is provided. A battery cell includes an electrode laminate in which a positive electrode and a negative electrode are alternately laminated via an electrolyte layer. The battery cell includes a tube-shaped insulating member that holds the electrode laminate, and the insulating member is heat-shrinkable mainly in a direction parallel to the lamination direction of the electrode laminate. The insulating member preferably has a heat shrinkage percentage of to −5% to 5% in a direction in which the current collector tab of the electrode laminate extends.

公开(公告)号：US20220200056A1

公开(公告)日：2022-06-23

申请号：US17644097

申请日：2021-12-14

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M10/0585 ,  H01M10/0562 ,  H01M10/0525

Abstract: To provide a solid-state battery that can improve layout by allowing a current collecting position to be optionally disposed and that can suppress the occurrence of short circuits. A solid-state battery includes a positive electrode, a negative electrode, and a solid electrolyte layer disposed between the positive electrode and the negative electrode. A first electrode selected from one of the positive electrode and the negative electrode includes a material mixture filled portion including a metal porous body filled with an electrode material mixture. The solid electrolyte layer is disposed so as to cover a periphery of the material mixture filled portion. A second electrode selected from the other of the positive electrode and the negative electrode is disposed so as to cover the solid electrolyte layer.

公开(公告)号：US20220181640A1

公开(公告)日：2022-06-09

申请号：US17457900

申请日：2021-12-06

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M4/76 ,  H01M4/66

Abstract: Provided are an electrode for lithium ion secondary batteries which can prevent cracking of the electrode, and a lithium ion secondary battery made using the same. An electrode (1, 2) for a lithium ion secondary battery (100) includes a collector (10, 20) of a metal porous body having a predetermined thickness, and having a corner of at least one location in a stereoscopic view; and an electrode mixture (18, 28) filled into these pores. The collector has a mixture filled region (11, 21) in which the electrode mixture is filled, and a mixture non-filled region (15, 25) in which the electrode mixture is not filled, or a high modulus filler having smaller elastic modulus than the electrode mixture is filled, existing at a corner of the collector.

公开(公告)号：US20220158198A1

公开(公告)日：2022-05-19

申请号：US17455017

申请日：2021-11-16

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M4/78 ,  H01M4/13 ,  H01M50/107 ,  H01M10/058 ,  H01M50/186 ,  H01M4/66

Abstract: To provide a solid-state battery capable of achieving a higher capacity. A solid-state battery includes a positive electrode and a negative electrode. The positive electrode and the negative electrode each includes a current collector that is a metal porous body having a spiral shape, and an electrode material mixture with which the current collector is filled. The positive electrode and the negative electrode are arranged in combination such that opposing faces of the positive electrode and the negative electrode alternately contact each other in an axial direction of the spiral shape. A pair of the positive electrode and the negative electrode having the above structure are housed in an exterior packaging body having a cylindrical shape to achieve a higher capacity of the solid-state battery.

公开(公告)号：US20220006162A1

公开(公告)日：2022-01-06

申请号：US17364881

申请日：2021-07-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/583 ,  H01M10/658 ,  H01M50/531 ,  H01M50/543

Abstract: A highly safe and high energy density battery is provided. A battery (1) includes: a laminated body (100) in which a positive electrode (20) including a positive electrode collector (22), a solid electrolyte (30) and negative electrode (10) including a negative electrode collector (12) are repeatedly arranged, and at least any of the positive electrode collector (22) and negative electrode collector (12) is respectively drawn from an end face of the laminated body (100), and configures a plurality of negative electrode collector tabs (12a, 12b, 12c and 12d); an outer packaging (300) which houses the laminated body (100); and a lead terminal (200) which is electrically connected with the plurality of collector tabs, and having a part extending from the outer packaging (300) to outside, in which the lead terminal (200) is connected with a first overcurrent isolation part (210) arranged inside of the outer packaging (300).

公开(公告)号：US20210184279A1

公开(公告)日：2021-06-17

申请号：US17100957

申请日：2020-11-23

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/48 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2/10

Abstract: Provided is a battery pack having excellent energy density and durability.
A battery pack 100 includes solid-state battery modules 102 each configured such that a plurality of solid-state battery cells containing a solid electrolyte is stacked and electrolytic solution-based battery modules 32 each configured such that a plurality of electrolytic solution-based battery cells containing an electrolytic solution is stacked, the solid-state battery modules 102 and the electrolytic solution-based battery modules 32 being combined and housed in the pack. The solid-state battery modules 102 are arranged to surround the electrolytic solution-based battery modules 32.

公开(公告)号：US20210184244A1

公开(公告)日：2021-06-17

申请号：US17105645

申请日：2020-11-27

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/04 ,  H01M2/12 ,  H01M10/0585 ,  H01M2/02

Abstract: To provide a solid-state battery capable of applying an initial load that results in sufficient surface pressure to a battery cell, and a method for making the solid-state battery.
A pressing part is provided in the solid-state battery case and the force of the spring is utilized, and a gas vent port is provided to replace gas or perform depressurization.
Specifically, a solid-state battery including a solid-state battery cell and a battery case that houses the solid-state battery cell, is provided. A pressing part that applies surface pressure to the solid-state battery cell is formed on a surface constituting the battery case that is substantially perpendicular to the laminating direction of a laminate constituting the solid-state battery cell, and at least one gas vent port is formed in the battery case.