公开(公告)号：US20240332604A1

公开(公告)日：2024-10-03

申请号：US18585078

申请日：2024-02-23

Applicant: HONDA MOTOR CO., LTD.

Inventor： Kizashi IWAKIRI ,  Takuya TANIUCHI ,  Toshimitsu TANAKA

IPC: H01M10/0562 ,  H01M10/0525

CPC classification number: H01M10/0562 ,  H01M10/0525 ,  H01M2300/0068 ,  H01M2300/0094

Abstract: The present disclosure relates to a solid electrolyte composition that can achieve compatibility between energy density and strength of a solid-state battery. Provided is a solid electrolyte composite disposed between a positive electrode layer and a negative electrode layer in a solid-state battery, comprising a positive electrode side solid electrolyte layer disposed in a side closer to the positive electrode layer and a negative electrode side solid electrolyte layer disposed in a side closer to the negative electrode layer, the solid electrolyte composite having a stepped shape having a step between the positive electrode side solid electrolyte layer and the negative electrode side solid electrolyte layer, at least the negative electrode side solid electrolyte layer comprising a filler and/or a porous substrate, the negative electrode side solid electrolyte layer having a higher content of the filler and/or the porous substrate than the positive electrode side solid electrolyte layer.

公开(公告)号：US20240079657A1

公开(公告)日：2024-03-07

申请号：US18356251

申请日：2023-07-21

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Terumi FURUTA

IPC: H01M10/0585 ,  H01M10/052

CPC classification number: H01M10/0585 ,  H01M10/052 ,  H01M2300/0065

Abstract: A solid-state batter is provided which includes an electrode stack in which a solid electrolyte layer and positive electrode composite layer are sequentially laminated on a lithium metal layer, in which, when viewing the electrode stack from a top surface, an outer circumferential end of the lithium metal layer exists more to an inner side than an outer circumferential end of the solid electrolyte layer, and an insulation member extending from the solid electrolyte layer towards the lithium metal layer is disposed in a region between the outer circumferential end of the lithium metal layer and the outer circumferential end of the solid electrolyte layer.

公开(公告)号：US20220231343A1

公开(公告)日：2022-07-21

申请号：US17456883

申请日：2021-11-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki ARIGA ,  Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M50/121 ,  H01M50/533 ,  H01M50/593

Abstract: A solid-state battery includes: a solid-state battery cell Including a laminate having at least one positive electrode having a positive electrode current collector and a positive electrode active material layer, at least one negative electrode having a negative electrode current collector and a negative electrode active material layer, and a solid-state electrolyte interposed between the positive electrode and the negative electrode, and a first elastic member arranged at least on both sides of the laminate in a laminating direction; and a resin casing made of a thermosetting resin or a thermoplastic resin and which closely adheres to and covers the solid-state battery cell.

公开(公告)号：US20220223920A1

公开(公告)日：2022-07-14

申请号：US17647465

申请日：2022-01-09

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshiyuki ARIGA ,  Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M10/0585 ,  H01M4/66 ,  H01M4/76 ,  H01M4/80 ,  H01M10/0525 ,  H01M50/531

Abstract: To improve the adhesion between an electrode material mixture and a solid electrolyte, and thereby suppress electrodeposition of lithium. This electrode includes a planar electrode current collector including a metal porous body, an electrode material mixture layer that fills pores of the metal porous body, and a solid electrolyte layer that fills pores of the metal porous body. The electrode material mixture layer is formed on one side of the electrode current collector, and the solid electrolyte layer is formed on the other side of the electrode current collector. The electrode material mixture layer and the solid electrolyte layer are stacked in a planar shape in the pores of the metal porous body.

公开(公告)号：US20220216508A1

公开(公告)日：2022-07-07

申请号：US17645993

申请日：2021-12-26

Applicant: HONDA MOTOR CO., LTD.

Inventor： Toshimitsu TANAKA ,  Kiyoshi TANAAMI ,  Takuya TANIUCHI ,  Toshiyuki ARIGA

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/80

Abstract: To provide an electrode for a lithium ion secondary battery that can improve the diffusivity of lithium ions in an electrode material mixture when a metal porous body is used as a current collector, thereby improving the output characteristics and durability of the battery. A positive electrode 1 and a negative electrode 2, which are electrodes, respectively include a current collector 11 and a current collector 21 each including a metal porous body having communicating pores V, and an electrode material mixture 13 and an electrode material mixture 23, with which at least the pores V of the metal porous body are filled. At least an electrode active material and ionic conductor particles are dispersed in the electrode material mixtures 13 and 23. The ionic conductor particles are preferably oxide solid electrolyte particles.

公开(公告)号：US20220181678A1

公开(公告)日：2022-06-09

申请号：US17457899

申请日：2021-12-06

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M10/0562 ,  H01M10/0585 ,  H01M4/66 ,  H01M4/62 ,  H01M4/76

Abstract: To provide a solid-state battery in which the capacity and voltage can be optionally adjusted in a single battery and the installation space for the battery can be reduced. A solid-state battery includes a plurality of electrode layers, and a solid electrolyte layer disposed between the electrode layers. The electrode layers includes positive electrode portion formed by filling a current collector including a metal porous body with a positive electrode material mixture, negative electrode portion formed by filling a current collector including a metal porous body with a negative electrode material mixture, and an isolation portion formed between the positive electrode portion and the negative electrode portion. Between the plurality of electrode layers disposed adjacent to each other, the positive electrode portion and the negative electrode portion are disposed so as to face each other, and the isolation portions are disposed so as to face each other.

公开(公告)号：US20220173406A1

公开(公告)日：2022-06-02

申请号：US17456880

申请日：2021-11-29

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro OHTA ,  Takuya TANIUCHI

IPC: H01M4/76 ,  H01M4/66 ,  H01M4/62 ,  H01M10/0525 ,  H01M50/533

Abstract: Provided are a lithium ion secondary battery electrode that occurrence of short-circuit and contamination can be reduced and the method for manufacturing such a lithium ion secondary battery electrode. An electrode used for a lithium ion secondary battery includes a current collector formed of a metal porous body. The current collector has a mixture layer impregnated with an electrode material mixture containing an electrode active material and a non-mixture-impregnated portion not impregnated with the electrode material mixture and including a tab portion and a tab converging portion. The surface roughness Ra of the non-mixture-impregnated portion is equal to or less than the surface roughness of the mixture layer.

公开(公告)号：US20220149494A1

公开(公告)日：2022-05-12

申请号：US17453645

申请日：2021-11-04

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA ,  Toshiyuki ARIGA

IPC: H01M50/583 ,  H01M4/80 ,  H01M4/66 ,  H01M50/581

Abstract: To provide a solid-state battery having high safety and high energy density. An electrode for a solid-state battery includes a current collector that is a metal porous body, and an electrode material mixture with which the current collector is filled. The current collector has an end portion having a material mixture non-filled region that is not filled with the electrode material mixture. The material mixture non-filled region has a part that is a fuse function portion. The fuse function portion has a smaller total cross-sectional area of metal in a cross section perpendicular to a direction of the end portion than the rest of the material mixture non-filled region.

公开(公告)号：US20220140302A1

公开(公告)日：2022-05-05

申请号：US17453175

申请日：2021-11-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Masahiro OHTA ,  Takuya TANIUCHI

IPC: H01M4/04 ,  H01M4/13 ,  H01M4/36 ,  H01M10/0525

Abstract: To provide an electrode for a lithium-ion secondary battery that can reduce risk of a short circuit when a porous metal is used as a current collector.
An electrode for lithium-ion secondary battery having a positive electrode, a negative electrode, and an electrolyte disposed between the positive electrode and the negative electrode, the electrode comprising a current collector and a current collector tab, wherein the current collector is constituted by a metal porous body having voids in communication with each other, wherein a surface of the current, collector, including surfaces of the voids, is covered with an ion conductor layer, and wherein an electrode active material is disposed on the surface of the ion conductor layer of the voids.

公开(公告)号：US20220109216A1

公开(公告)日：2022-04-07

申请号：US17281237

申请日：2018-10-01

Applicant: HONDA MOTOR CO., LTD.

Inventor： Takuya TANIUCHI ,  Masahiro OHTA

IPC: H01M50/507 ,  H01M50/51 ,  H01M10/613 ,  H01M10/625 ,  H01M10/647

Abstract: In order to secure a larger cooling surface area for battery cells and making it possible to keep the height of the battery module low and improve the degree of freedom in arranging the battery cells, this battery module is provided with a plurality of battery cells 2 each comprising an all-solid battery having laminated therein a positive electrode layer 201, a negative electrode layer 202, and a solid electrolyte layer 203. Each of the battery cells 2 has a pair of electrode terminals 23a, 23b protruding from opposing lateral faces 22 of the battery cell 2. The plurality of battery cells 2 are arranged so as to be parallel to the lamination planes of the positive electrode layer 201, the negative electrode layer 202, and the solid electrolyte layer 203 and in such a manner as to have the respective electrode terminals 23a, 23b of different battery cells 2 arrayed in parallel to each other. The electrode terminal 23a and the electrode terminal 23b of battery cells 2 adjacent in the array direction are electrically connected by a bus bar 3.