公开(公告)号：US20210043886A1

公开(公告)日：2021-02-11

申请号：US17071621

申请日：2020-10-15

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Kenji OSHIMA ,  Koji HATTORI ,  Shuichi NAGAOKA

IPC: H01M2/02 ,  H01M10/0525 ,  H01M2/08

Abstract: Provided is a secondary battery in which a sealing edge of a battery exterior body is formed by a combination of a first exterior body portion and a second exterior body portion of an exterior body that accommodate an electrode assembly. The second exterior body portion is folded so as to sandwich the first exterior body portion at the sealing edge, and a folded bonding portion is having a folded form in a sectional view of the sealing edge is provided in a metal interlayer region between a metal layer of the first exterior body portion and a folded metal layer of the second exterior body portion.

公开(公告)号：US20210020987A1

公开(公告)日：2021-01-21

申请号：US17060783

申请日：2020-10-01

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Koji HATTORI ,  Shuichi NAGAOKA ,  Kenji OSHIMA

IPC: H01M10/0565 ,  H01M2/16 ,  H01M4/134

Abstract: A lithium polymer battery is provided. The lithium polymer battery includes a laminate film as an exterior material including a metal foil. The lithium polymer battery further includes a first electrode including the metal foil and a first electrode active material layer provided on the metal foil; a second electrode including a second electrode current collector and a second electrode active material layer provided on the second electrode current collector, and a polymer electrolyte provided at an interface between the metal foil 11 and the first electrode active material layer.

公开(公告)号：US20240266602A1

公开(公告)日：2024-08-08

申请号：US18624916

申请日：2024-04-02

Applicant: MURATA MANUFACTURING CO., LTD.

Inventor： Koji HATTORI ,  Shuichi NAGAOKA ,  Kenji OSHIMA

IPC: H01M10/0565 ,  H01M4/134 ,  H01M50/105 ,  H01M50/46 ,  H01M50/534 ,  H01M50/536

CPC classification number: H01M10/0565 ,  H01M4/134 ,  H01M50/46 ,  H01M50/105 ,  H01M50/534 ,  H01M50/536

Abstract: A lithium polymer battery is provided. The lithium polymer battery includes a laminate film as an exterior material including a metal foil. The lithium polymer battery further includes a first electrode including the metal foil and a first electrode active material layer provided on the metal foil; a second electrode including a second electrode current collector and a second electrode active material layer provided on the second electrode current collector, and a polymer electrolyte provided at an interface between the metal foil 11 and the first electrode active material layer.

公开(公告)号：US20230019426A1

公开(公告)日：2023-01-19

申请号：US17952590

申请日：2022-09-26

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenji OSHIMA ,  Makoto YOSHIOKA

IPC: H01M50/593 ,  H01M50/586 ,  H01M10/0525 ,  H01M10/0585

Abstract: A solid-state battery that includes at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer, wherein each of the positive electrode layer and the negative electrode layer includes a side part having a terminal connection part and a terminal non-connection part; and an insulating part or a solid electrolyte part surrounding at least a part of the terminal non-connection part of at least one of the positive electrode layer and the negative electrode layer in a planar view of the at least one battery constituent unit such that the insulating part or the solid electrolyte part is in direct contact with the terminal non-connection part in a contact region and out of direct contact with the terminal non-connection part in a non-contact region.

公开(公告)号：US20220285682A1

公开(公告)日：2022-09-08

申请号：US17664323

申请日：2022-05-20

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Makoto YOSHIOKA ,  Kenji OSHIMA

IPC: H01M4/58 ,  H01M4/04 ,  H01M10/052

Abstract: A solid-state battery having two or more stacked battery elements, each battery element including one or more battery constituent units in which a positive electrode layer and a negative electrode layer oppose each other with a solid electrolyte layer between the positive electrode layer and the negative electrode layer; and an insulating layer interposed between adjacent battery elements of the two or more stacked battery elements, wherein at least one end portion of the insulating layer has a thickness greater than a thickness of a central portion of the insulating layer in a sectional view thereof.

公开(公告)号：US20230261294A1

公开(公告)日：2023-08-17

申请号：US18308094

申请日：2023-04-27

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Masayuki KOUZU ,  Kenji OSHIMA ,  Makoto YOSHIOKA

IPC: H01M50/157 ,  H01M10/0525 ,  H01M10/0562

CPC classification number: H01M50/157 ,  H01M10/0525 ,  H01M10/0562

Abstract: A solid state battery that includes: a solid state battery laminate including at least one battery constituent unit, the at least one battery constituent unit including a positive electrode layer, a negative electrode layer, and a solid electrolyte layer interposed between the positive electrode layer and the negative electrode layer; a first external terminal on a first side surface of the solid state battery laminate; a second external terminal on a second side surface of the solid state battery laminate, the second side surface facing the first side surface across the solid state battery laminate; and an exterior member covering the solid state battery laminate, the exterior member including one or more pores on an inner side of the exterior member adjacent to the solid state battery laminate.

公开(公告)号：US20230163434A1

公开(公告)日：2023-05-25

申请号：US18061724

申请日：2022-12-05

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Takeshi MANIWA ,  Kenji OSHIMA ,  Osamu CHIKAGAWA ,  Naoki MAEDA

IPC: H01M50/588 ,  H01M50/103 ,  H01M50/519

CPC classification number: H01M50/588 ,  H01M50/103 ,  H01M50/519

Abstract: A solid state battery that includes: a battery element body; a first external electrode on a first end surface of the battery element body; a second external electrode on a second end surface of the battery element body; and a protective layer covering a peripheral surface of the battery element body that connects the first and second end surfaces. The first external electrode covers a first end surface of the solid state battery, and the second external electrode covers a second end surface of the solid state battery. The first principal surface and the second principal surface have a pair of a first convex part and second convex part extending from the first external electrode to the second external electrode along a longitudinal direction and located at opposed end parts in a transverse direction.

公开(公告)号：US20220231332A1

公开(公告)日：2022-07-21

申请号：US17714529

申请日：2022-04-06

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Makoto YOSHIOKA ,  Akisuke ITO ,  Kenji OSHIMA ,  Kenichi BANDO

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

Abstract: A solid-state battery that includes a battery element body including a positive electrode layer and a negative electrode layer stacked with respect to each other with a solid electrolyte layer interposed therebetween; and an exterior material covering a surface of the battery element body, wherein the exterior material is a sintered body containing a glassy material and at least two crystalline materials, and the glassy material and the at least two crystalline materials contain at least one common element.

公开(公告)号：US20220140404A1

公开(公告)日：2022-05-05

申请号：US17574810

申请日：2022-01-13

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Kenji OSHIMA ,  Makoto YOSHIOKA

IPC: H01M10/0585 ,  H01M10/0525 ,  H01M4/62 ,  H01M50/547

Abstract: A method of manufacturing a solid state battery that includes forming a solid state battery precursor by sequentially laminating a positive electrode layer sheet, a solid electrolyte layer sheet, and a negative electrode layer sheet along a laminating direction; providing a terminal non-connection portion contact sheet so as to contact a terminal non-connection portion of an outer edge portion of each of the positive electrode layer sheet and the negative electrode layer sheet, wherein the terminal non-connection portion contact sheet has a ratio of a thermal expansion coefficient of at least one of a solid electrolyte material and an insulating material contained in the terminal non-connection portion contact sheet to a thermal expansion coefficient of an electrode material contained in at least one of the positive electrode layer sheet and the negative electrode layer sheet of 0.7 or more and less than 1.5; and firing the solid state battery precursor.