公开(公告)号：US20250149756A1

公开(公告)日：2025-05-08

申请号：US18932622

申请日：2024-10-31

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kota OHATA ,  Masahiro ISHIZUKA ,  Hajime HASEGAWA ,  Mitsuru TATEISHI ,  Norihiro OSE ,  Masashi CHIHARA

IPC: H01M50/553 ,  H01M50/119 ,  H01M50/176

Abstract: A battery cell includes: a laminate exterior body formed of a laminate containing a metal layer; an electrode body accommodated inside the laminate exterior body, in which electrode body a positive electrode and a negative electrode are laminated with one another sandwiching a separator; a pair of tabs that are connected with, respectively, the positive electrode and the negative electrode and that project outside the laminate exterior body; and a pair of conductive members that are electrically connected with the metal layer and disposed to be separated from the tabs, the conductive members respectively making contact with the pair of tabs in association with a swelling of the laminate exterior body.

公开(公告)号：US20200185726A1

公开(公告)日：2020-06-11

申请号：US16700353

申请日：2019-12-02

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Seiko KUBOTA ,  Masato ONO ,  Kazuhito KATO ,  Norihiro OSE

IPC: H01M4/66 ,  H01M10/0585 ,  H01M4/04

Abstract: Provided is an electrode laminate for all-solid-state batteries, which is configured to suppress the occurrence of short circuits in all-solid-state batteries and/or to suppress a decrease in the durability of all-solid-state batteries, and which is configured to suppress an increase in the resistance value of all-solid-state batteries. Disclosed is an electrode laminate for all-solid-state batteries, comprising: a current collector complex comprising adhesive portions and a current collector portion that comprises at least a current collector, and an active material layer disposed on the current collector complex, wherein an active material layer-side main surface of the current collector portion and active material layer-side main surfaces of the adhesive portions are formed to be one flat surface, and the current collector portion and the active material layer are attached by the adhesive portions.

公开(公告)号：US20190319252A1

公开(公告)日：2019-10-17

申请号：US16285643

申请日：2019-02-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Hideaki NISHIMURA ,  Yuki MATSUSHITA

IPC: H01M2/34 ,  H01M10/04 ,  H01M10/0585 ,  H01M10/0562 ,  H01M4/66

Abstract: In the stacked battery, a short-circuit current shunt part is electrically connected to the electric elements, and an insulating layer of the short-circuit current shunt part is constituted of material having a predetermined melting point or glass transition temperature. When heat is excessively generated in the battery due to internal short circuits etc. and the temperature of the battery reaches the melting point of the insulating layer, the insulating layer melts and its shape is changed to short-circuit the short-circuit current shunt part, and current flows from the electric elements into the short-circuit current shunt part. To measure the current flowing into the short-circuit current shunt part makes it possible to easily grasp excessive heat generation of the battery to suppress deterioration of the battery due to heat generation.

公开(公告)号：US20180316065A1

公开(公告)日：2018-11-01

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: H01M10/42 ,  H01M10/0585 ,  H01M2/26 ,  H01M4/38

Abstract: A main object of the present disclosure is to provide a stacked battery in which sneak current caused by an unevenness of a 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 with a cathode current collecting tab, a cathode active material layer, a solid electrolyte layer, an anode active material layer, and an anode current collector with an anode current collecting tab, 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) 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; and condition ii) 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.

公开(公告)号：US20180301753A1

公开(公告)日：2018-10-18

申请号：US15948123

申请日：2018-04-09

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Norihiro OSE ,  Hajime HASEGAWA ,  Yusuke KINTSU ,  Mitsutoshi OTAKI

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/62 ,  H01M4/36 ,  H01M10/0585

Abstract: Provided are an anode mixture configured to provide excellent cycle characteristics when used in an all-solid-state lithium ion secondary battery, an anode containing the anode mixture, and an all-solid-state lithium ion secondary battery containing the anode. Disclosed is an anode mixture for an all-solid-state lithium ion secondary battery, wherein the anode mixture contains an anode active material, a solid electrolyte and an electroconductive material; wherein the anode active material contains at least one active material selected from the group consisting of a metal that is able to form an alloy with Li and an oxide of the metal; and wherein a value obtained by dividing, by a BET specific surface area (m2/g) of the solid electrolyte, a volume percentage (%) of the electroconductive material when a volume of the anode mixture is determined as 100 volume %, is 0.09 or more and 1.61 or less.

公开(公告)号：US20180294531A1

公开(公告)日：2018-10-11

申请号：US15941785

申请日：2018-03-30

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Kengo HAGA ,  Tomoya SUZUKI ,  Norihiro OSE ,  Akiji HAYASHI ,  Hiroyuki INOUE ,  Takayuki UCHIYAMA ,  Hajime HASEGAWA ,  Mitsutoshi OTAKI ,  Shigenori HAMA ,  Hiroyuki YAMAGUCHI ,  Dai KATO

IPC: H01M10/0585 ,  B32B37/06 ,  B32B37/10 ,  B32B37/18 ,  B32B15/06 ,  B32B15/20 ,  B32B25/18 ,  B32B25/02 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/04

Abstract: A method of producing an all-solid battery includes pressing a laminate in a state where the laminate is insulated from a press machine. The laminate includes a negative electrode current collector layer, a negative electrode active material layer, a solid electrolyte layer, and a positive electrode active material layer. The negative electrode current collector layer includes copper, at least one of the negative electrode active material layer and the solid electrolyte layer includes a sulfide solid electrolyte, and the press machine is an anisotropic press machine.

公开(公告)号：US20170244097A1

公开(公告)日：2017-08-24

申请号：US15424459

申请日：2017-02-03

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Norihiro OSE ,  Hikaru ASO ,  Keisuke OMORI ,  Hajime HASEGAWA ,  Mitsutoshi OTAKI ,  Hideyuki KOGA

IPC: H01M4/36 ,  H01M4/58 ,  H01M10/0562 ,  H01M10/0585 ,  H01M10/0525 ,  H01M4/136

CPC classification number: H01M4/364 ,  H01M4/0404 ,  H01M4/13 ,  H01M4/136 ,  H01M4/139 ,  H01M4/5815 ,  H01M4/621 ,  H01M4/624 ,  H01M10/0525 ,  H01M10/0562 ,  H01M10/0585 ,  H01M2004/027 ,  H01M2004/028 ,  H01M2300/0068

Abstract: A method is provided where an anode of an all-solid-state lithium ion secondary battery is easily doped with lithium and to provide a small resistance at a low battery capacity. The method includes a manufacturing method of a cathode including mixing at least a conductive assistant (C1) and a sulfide solid electrolyte (E1) to obtain a mixture; and mixing at least one cathode active material, a solid electrolyte (E2) and the mixture obtained from the first step to obtain a cathode mixture, wherein an amount of energy added to the sulfide solid electrolyte (E1) is larger than an amount of energy added to the solid electrolyte (E2), and the mixture is a material that releases lithium ions at a potential lower than a potential at which the cathode active material releases and occludes lithium ions. Manufacturing methods for a cathode and an all-solid-state lithium ion secondary battery including the cathode mixture are also disclosed.

公开(公告)号：US20210126282A1

公开(公告)日：2021-04-29

申请号：US16605432

申请日：2018-04-13

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Norihiro OSE ,  Hajime HASEGAWA ,  Mitsutoshi OTAKI ,  Yusuke KINTSU

IPC: H01M10/0562 ,  H01M10/0525 ,  H01M4/62 ,  H01M4/134 ,  H01M4/38

Abstract: Disclosed is an all-solid-state lithium ion secondary battery being excellent in cycle characteristics. The all-solid-state lithium ion secondary battery may be an all-solid-state lithium ion secondary battery, wherein an anode comprises an anode active material, an electroconductive material and a solid electrolyte; wherein the anode active material comprises at least one active material selected from the group consisting of a metal that is able to form an alloy with Li, an oxide of the metal, and an alloy of the metal and Li; and wherein a bulk density of the solid electrolyte is 0.3 g/cm3 or more and 0.6 g/cm3 or less.

公开(公告)号：US20200099094A1

公开(公告)日：2020-03-26

申请号：US16567149

申请日：2019-09-11

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Motoshi ISONO ,  Norihiro OSE ,  Tomoya SUZUKI

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

Abstract: It is suppressed that an active material particle enters into or penetrates through a solid electrolyte layer when an active material layer and the solid electrolyte layer are pressed and that short circuits between a cathode and an anode occur. A method for producing an all solid-state battery includes: a first step of stacking an active material layer over at least one surface of a solid electrolyte layer to constitute a stack; and a second step of pressing the stack to constitute a compact, wherein in the first step, the active material layer contains a secondary particle of an active material, and in the second step, the secondary particle is crushed to primary particles by said pressing, the secondary particle being present in an interfacial portion between the active material layer and the solid electrolyte layer.

公开(公告)号：US20190140311A1

公开(公告)日：2019-05-09

申请号：US16141326

申请日：2018-09-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Hajime HASEGAWA ,  Norihiro OSE ,  Hideaki NISHIMURA

IPC: H01M10/0562 ,  H01M4/66 ,  H01M10/42

Abstract: An all-solid state battery including at least one short-circuit current shunt part and a plurality of electric elements, the short-circuit current shunt part and the electric elements being stacked, wherein the shunt part includes a first and a second current collector layers, and an insulating layer between the first and second current collector layers, all being stacked, each of the electric elements includes a cathode current collector layer, a cathode material layer, a solid electrolyte layer, an anode material layer, and an anode current collector layer, all of these layers being stacked, the first current collector layer connected with the cathode current collector layer, the second current collector layer connected with the anode current collector layer, the electric elements are electrically connected with each other in parallel, and a plurality of sheets of metal foil, the one being arranged on a side wherein a nail penetrates in nail penetration testing.