公开(公告)号：US20240234703A1

公开(公告)日：2024-07-11

申请号：US18614919

申请日：2024-03-25

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato KAMIYA

IPC: H01M4/36 ,  H01M4/02 ,  H01M4/38 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M4/366 ,  H01M4/386 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0562 ,  H01M2004/027 ,  H01M2220/20

Abstract: An all solid state battery includes a cathode, an anode, an opposing region, a non-opposing region, and a solid electrolyte layer, and an anode active material layer includes an anode active material, and a sulfide solid electrolyte, the anode current collector is a current collector that react with the sulfide solid electrolyte at an open circuit potential of the anode active material, the anode current collector includes a coating layer including lithium titanate, on a surface of the anode active material layer side, in plan view, the coating layer includes one or two or more of an existence portion and non-existence portion respectively, in the region specified by an outer edge of the anode current collector, and in plan view, the coating layer includes the existence portion in at least a part of the opposing region, and includes the non-existence portion in at least a part of the non-opposing region.

公开(公告)号：US20220181609A1

公开(公告)日：2022-06-09

申请号：US17535190

申请日：2021-11-24

Applicant: Toyota Jidosha Kabushiki Kaisha

Inventor： Masato KAMIYA

IPC: H01M4/36 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/38 ,  H01M4/66

Abstract: An all solid state battery includes a cathode, an anode, an opposing region, a non-opposing region, and a solid electrolyte layer, and an anode active material layer includes an anode active material, and a sulfide solid electrolyte, the anode current collector is a current collector that react with the sulfide solid electrolyte at an open circuit potential of the anode active material, the anode current collector includes a coating layer including lithium titanate, on a surface of the anode active material layer side, in plan view, the coating layer includes one or two or more of an existence portion and non-existence portion respectively, in the region specified by an outer edge of the anode current collector, and in plan view, the coating layer includes the existence portion in at least a part of the opposing region, and includes the non-existence portion in at least a part of the non-opposing region.

公开(公告)号：US20180138487A1

公开(公告)日：2018-05-17

申请号：US15809428

申请日：2017-11-10

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato KAMIYA ,  Masaru ISHII ,  Takayuki HOJO ,  Tetsuya KANEKO

IPC: H01M2/26 ,  H01M2/10 ,  H01M10/0525

Abstract: A battery pack includes a plurality of unit cells, each including an electrode body having a structure in which a positive electrode and a negative electrode are stacked, and a busbar that electrically connects a positive electrode terminal to a negative electrode terminal between the unit cells. The unit cells are stacked adjacent to one another in the same direction as a direction in which the positive electrode and the negative electrode of the electrode body are stacked. The busbar electrically connects the unit cells disposed apart from each other among the unit cells excluding the unit cells disposed adjacent to each other.

公开(公告)号：US20180131032A1

公开(公告)日：2018-05-10

申请号：US15790522

申请日：2017-10-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masaru ISHII ,  Masato KAMIYA ,  Takayuki HOJO ,  Tetsuya KANEKO

IPC: H01M10/04 ,  H01M2/20 ,  H01M10/0525 ,  H01M10/625 ,  H01M2/10

CPC classification number: H01M10/0481 ,  H01M2/0212 ,  H01M2/0217 ,  H01M2/1077 ,  H01M2/1094 ,  H01M2/20 ,  H01M2/206 ,  H01M10/0413 ,  H01M10/0468 ,  H01M10/0525 ,  H01M10/625 ,  H01M2220/20

Abstract: An assembled battery disclosed here includes a plurality of single cell array units each including single cells that are arranged in a lamination direction of a positive electrode and a negative electrode of an electrode body as an arrangement direction. The single cell array units are disposed parallel to each other such that arrangement directions of the single cells constituting the units are parallel to each other. Then, in the assembled battery, none of the single cells included in each of the single cell array units is directly electrically connected to adjacent single cells in the same unit, but is directly electrically connected to any one of the single cells constituting another single cell array unit through a bus bar.

公开(公告)号：US20160093844A1

公开(公告)日：2016-03-31

申请号：US14869214

申请日：2015-09-29

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA ,  SANYO Electric Co., Ltd.

Inventor： Masato KAMIYA ,  Taira SAITO ,  Daisuke IKEDA ,  Keisuke MINAMI ,  Toyoki FUJIHARA

IPC: H01M2/10 ,  H01M2/34

CPC classification number: H01M2/345 ,  H01M2/1077

Abstract: A first end plate is disposed at one end, in a stacking direction, of a stacked body of secondary battery cells. A second end plate is disposed at the other end, in the stacking direction, of the stacked body of the secondary battery cells. A restraining member is joined to the first end plate and the second end plate. The restraining member applies, to the first end plate and the second end plate, restraint loads that sandwich and restrain the stacked body from both sides in the stacking direction. The first end plate is movable relative to the second end plate in the state where the restraining member is joined to both the first end plate and the second end plate.

Abstract translation: 第一端板设置在层叠体的二次电池单元的层叠方向的一端。 第二端板在二次电池单元的堆叠体的堆叠方向的另一端设置。 约束构件连接到第一端板和第二端板。 限制构件向第一端板和第二端板施加约束在层叠方向上从两侧夹住并约束层叠体的载荷。 第一端板在限制构件接合到第一端板和第二端板两者的状态下可相对于第二端板移动。

公开(公告)号：US20150249266A1

公开(公告)日：2015-09-03

申请号：US14709943

申请日：2015-05-12

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masahiro TATSUMISAGO ,  Akitoshi HAYASHI ,  Shigenori HAMA ,  Koji KAWAMOTO ,  Yasushi TSUCHIDA ,  Hiroshi NAGASE ,  Yukiyoshi UENO ,  Masato KAMIYA

IPC: H01M10/0562 ,  C01B17/22 ,  H01M10/052

CPC classification number: H01M10/0562 ,  C01B17/22 ,  C01G17/006 ,  H01B1/06 ,  H01M4/621 ,  H01M10/052 ,  H01M2300/002 ,  H01M2300/0065 ,  H01M2300/0068 ,  Y02E60/122 ,  Y02P70/54 ,  Y02T10/7011

Abstract: The main object of the present invention is to provide a sulfide solid electrolyte material with less hydrogen sulfide generation amount. The present invention solves the above-mentioned problem by providing a sulfide solid electrolyte material using a raw material composition containing Li2S and sulfide of an element of the group 14 or the group 15 in the periodic table, containing substantially no cross-linking sulfur and Li2S.

公开(公告)号：US20250140927A1

公开(公告)日：2025-05-01

申请号：US18892702

申请日：2024-09-23

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato KAMIYA

IPC: H01M10/0568 ,  H01M10/0587 ,  H01M50/103 ,  H01M50/553 ,  H01M50/627

Abstract: A non-aqueous battery includes a case, an electrode assembly, and an electrolyte solution. The case has a width direction, a height direction, and a thickness direction. The case includes a first side wall and a second side wall. The second side wall faces the first side wall. Each of the first side wall and the second side wall is orthogonal to the width direction. A positive electrode terminal and a negative electrode terminal are provided at the first side wall. The electrode assembly is of a wound type. A winding axis of the electrode assembly is parallel to the width direction. The electrode assembly includes a first end portion and a second end portion. The first end portion faces the first side wall. A relationship of “R1/R2>1” is satisfied. R1 represents an electrode resistance at the first end portion. R2 represents an electrode resistance at the second end portion.

公开(公告)号：US20190280350A1

公开(公告)日：2019-09-12

申请号：US16287086

申请日：2019-02-27

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato KAMIYA ,  Katsuhiko NAGAYA ,  Norihiro YAMADA ,  Shinobu OKAYAMA ,  Takayuki HOJO

IPC: H01M10/48 ,  G01R31/385 ,  H01M10/04 ,  H01M10/42

Abstract: A main object of the present disclosure is to provide a method for testing an all solid state battery with which the presence of short circuit or the presence of defect causing short circuit can be detected with high accuracy by a comparatively simple method in which a voltage is applied to a battery and the current value thereof is measured. The present disclosure achieves the object by providing a method for testing an all solid state battery, the method comprising steps of: a resistance increasing step of increasing resistance of an all solid state battery to 3.2*105 Ω·cm2 or more; a voltage applying step of applying voltage to an all solid state battery of which the resistance is increased; and a judging step of judging acceptability of the all solid state battery based on a current value measured in the voltage applying step.

公开(公告)号：US20180131035A1

公开(公告)日：2018-05-10

申请号：US15794348

申请日：2017-10-26

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Takayuki HOJO ,  Masaru ISHII ,  Masato KAMIYA ,  Tetsuya KANEKO

IPC: H01M10/058 ,  H01M10/04 ,  H01M2/02

CPC classification number: H01M10/058 ,  H01M2/02 ,  H01M2/1077 ,  H01M2/206 ,  H01M2/22 ,  H01M2/345 ,  H01M10/0431 ,  H01M2200/106 ,  H01M2200/20 ,  H01M2220/20

Abstract: There is provided an assembled battery including a plurality of single cells and a plurality of bus bars connecting the plurality of single cells in series. The plurality of single cells is arranged such that a pair of flat side surfaces faces each other. The single cells each include a battery case, a positive electrode sheet, a negative electrode sheet, a positive electrode terminal, a negative electrode terminal, an electrical resistor disposed in a conductive path between the positive electrode sheet and the positive electrode terminal, and a pressure operative type current interruption mechanism disposed in a conductive path between the negative electrode sheet and the negative electrode terminal.

公开(公告)号：US20240162569A1

公开(公告)日：2024-05-16

申请号：US18385971

申请日：2023-11-01

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Masato KAMIYA

IPC: H01M50/46 ,  H01M10/0525

CPC classification number: H01M50/46 ,  H01M10/0525

Abstract: A lithium-ion secondary battery includes: an electrode body in which a positive electrode having a positive electrode active material layer and a positive electrode current collector, and a negative electrode having a negative electrode active material layer and a negative electrode current collector, are laminated with a separator therebetween, the separator having a conductive layer, wherein: the positive electrode active material layer and the negative electrode active material layer contact the separator, at least one of the positive electrode active material layer or the negative electrode active material layer has a groove in a thickness direction, and a surface of the separator, which faces a surface of the at least one of the positive electrode active material layer or the negative electrode active material layer which has the groove, includes the conductive layer.