公开(公告)号：US10122010B2

公开(公告)日：2018-11-06

申请号：US14751443

申请日：2015-06-26

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Ryota Tajima ,  Yuugo Goto ,  Yumiko Yoneda ,  Junya Goto ,  Takuya Miwa ,  Masaaki Hiroki

IPC: H01M4/13 ,  H01M4/139 ,  H01M10/0525 ,  H01M2/02 ,  H01M4/02

Abstract: An electronic device having a novel structure, specifically, an electronic device having a novel structure that can be changed into various appearances is provided. Specifically, after an active material layer is formed on one or both surfaces of a current collector, the active material layer in a bent region is partly removed. The removed region of the active material layer can be in a linear shape, a dot shape, or a matrix shape, for example. After the active material layer is formed on one or both surfaces of the current collector, laser processing for removing part of the active material layer in an irradiation region is performed using laser light or the like. On the region where the surface of the current collector is exposed, the active material layer is not provided, and this region is a region that does not function as a battery. Owing to this region, a secondary battery with a wide movable region can be achieved.

公开(公告)号：US11239516B2

公开(公告)日：2022-02-01

申请号：US16353414

申请日：2019-03-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masayuki Kimura ,  Junya Goto

IPC: H01M2/02 ,  H01M10/04 ,  H01M50/116 ,  H01M50/107

Abstract: To improve the flexibility of a power storage device, or provide a high-capacity power storage device. The power storage device includes a positive electrode, a negative electrode, an exterior body, and an electrolyte. The outer periphery of each of the positive electrode active material layer and the negative electrode active material layer is a closed curve. The exterior body includes a film and a thermocompression-bonded region. The inner periphery of the thermocompression-bonded region is a closed curve. The electrolyte, the positive electrode active material layer, and the negative electrode active material layer are in a region surrounded by the thermocompression-bonded region.

公开(公告)号：US10686167B2

公开(公告)日：2020-06-16

申请号：US15215621

申请日：2016-07-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junya Goto ,  Ai Nakagawa ,  Yuika Sato

IPC: H01M2/02 ,  H01G11/80 ,  H01G11/78 ,  H01G11/82 ,  H01M10/42 ,  H01M10/0525

Abstract: A repeatedly bendable power storage device. A highly reliable power storage device. A long-life power storage device. A repeatedly bendable electronic device. A flexible electronic device. The power storage device includes a film, a positive electrode, and a negative electrode. The film includes a plurality of projections. A difference between the maximum height and the minimum height of a surface of the film is greater than or equal to 0.15 mm and less than 0.8 mm. The modulus of rigidity of the film is less than 6.5×109 N. The film includes a metal layer. The thickness of the metal layer is greater than or equal to 5 μm and less than or equal to 200 μm. The positive electrode and the negative electrode are surrounded by the film.

公开(公告)号：US10084186B2

公开(公告)日：2018-09-25

申请号：US14920650

申请日：2015-10-22

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takahiro Kawakami ,  Teruaki Ochiai ,  Shuhei Yoshitomi ,  Takuya Hirohashi ,  Mako Motoyoshi ,  Yohei Momma ,  Junya Goto

IPC: H01M4/505 ,  H01M4/36 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M2220/30

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

公开(公告)号：US11710823B2

公开(公告)日：2023-07-25

申请号：US17852407

申请日：2022-06-29

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro Kawakami ,  Teruaki Ochiai ,  Shuhei Yoshitomi ,  Takuya Hirohashi ,  Mako Motoyoshi ,  Yohei Momma ,  Junya Goto

IPC: H01M4/505 ,  H01M4/36 ,  H01M4/131 ,  H01M4/1391

CPC classification number: H01M4/505 ,  H01M4/131 ,  H01M4/1391 ,  H01M4/366 ,  H01M2220/30

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.

公开(公告)号：US11380951B2

公开(公告)日：2022-07-05

申请号：US16890049

申请日：2020-06-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junya Goto ,  Ai Nakagawa ,  Yuika Sato

IPC: H01M10/0525 ,  H01M50/116 ,  H01G11/80 ,  H01G11/78 ,  H01G11/82 ,  H01M10/42

Abstract: A repeatedly bendable power storage device. A highly reliable power storage device. A long-life power storage device. A repeatedly bendable electronic device. A flexible electronic device. The power storage device includes a film, a positive electrode, and a negative electrode. The film includes a plurality of projections. A difference between the maximum height and the minimum height of a surface of the film is greater than or equal to 0.15 mm and less than 0.8 mm. The modulus of rigidity of the film is less than 6.5×109 N. The film includes a metal layer. The thickness of the metal layer is greater than or equal to 5 μm and less than or equal to 200 μm. The positive electrode and the negative electrode are surrounded by the film.

公开(公告)号：US10219395B2

公开(公告)日：2019-02-26

申请号：US14555644

申请日：2014-11-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota Tajima ,  Yuugo Goto ,  Yumiko Yoneda ,  Junya Goto ,  Takuya Miwa

IPC: H01M10/058 ,  H05K5/00 ,  H01M2/02 ,  H01M2/16 ,  H01M2/18 ,  H01M10/04 ,  H01M2/06 ,  H01M2/26 ,  H01M4/58 ,  H01M10/052 ,  H01M10/0585

Abstract: To provide a power storage unit having a structure which is unlikely to break down by change in shape, such as bending. An electrode plate is covered with a sheet of an insulator which is folded in two. The sheet is preferably processed into a bag-like shape or an envelope-like shape by bonding overlapping portions of the sheet in the periphery of the electrode plate. The electrode plate and the sheet are fixed to an exterior body. In the case where the shape of the exterior body is changed by bending or the like, the electrode plate and the sheet can slide together in the exterior body. Thus, stress on the electrode plate due to bending can be relieved.

公开(公告)号：US11908990B2

公开(公告)日：2024-02-20

申请号：US17586022

申请日：2022-01-27

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Masayuki Kimura ,  Junya Goto

IPC: H01M50/116 ,  H01M10/04 ,  H01M50/107 ,  H01M50/124 ,  H01M50/121 ,  H01M50/119 ,  H01M50/136

CPC classification number: H01M10/0413 ,  H01M10/0436 ,  H01M50/107 ,  H01M50/119 ,  H01M50/121 ,  H01M50/124 ,  H01M50/136 ,  H01M10/0459 ,  H01M2220/20 ,  H01M2220/30

Abstract: To improve the flexibility of a power storage device, or provide a high-capacity power storage device. The power storage device includes a positive electrode, a negative electrode, an exterior body, and an electrolyte. The outer periphery of each of the positive electrode active material layer and the negative electrode active material layer is a closed curve. The exterior body includes a film and a thermocompression-bonded region. The inner periphery of the thermocompression-bonded region is a closed curve. The electrolyte, the positive electrode active material layer, and the negative electrode active material layer are in a region surrounded by the thermocompression-bonded region.

公开(公告)号：US11355784B2

公开(公告)日：2022-06-07

申请号：US16662083

申请日：2019-10-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei Oguni ,  Junya Goto ,  Ai Nakagawa

IPC: H01M10/058 ,  H01M10/0525 ,  H01M10/0569 ,  H01M10/44

Abstract: In initial charge and discharge, decomposition products or a gas is generated, degrading a battery. At least one of solvents (e.g., ethylene carbonate) used for an electrolytic solution is brought into contact with a positive electrode and a negative electrode and then charge is performed to some degree, and after that, a different solvent or electrolytic solution (e.g., ethyl methyl carbonate or vinylene carbonate) was added to adjust the electrolytic solution and then charge is performed. Through this process, stable coating films are formed in initial charge and discharge, which stably inhibits a side reaction between the electrolytic solution and an active material.

公开(公告)号：US10749174B2

公开(公告)日：2020-08-18

申请号：US16114312

申请日：2018-08-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takahiro Kawakami ,  Teruaki Ochiai ,  Shuhei Yoshitomi ,  Takuya Hirohashi ,  Mako Motoyoshi ,  Yohei Momma ,  Junya Goto

IPC: H01M4/13 ,  H01M4/505 ,  H01M4/36 ,  H01M4/131 ,  H01M4/1391

Abstract: To increase capacity per weight of a power storage device, a particle includes a first region, a second region in contact with at least part of a surface of the first region and located on the outside of the first region, and a third region in contact with at least part of a surface of the second region and located on the outside of the second region. The first and the second regions contain lithium and oxygen. At least one of the first region and the second region contains manganese. At least one of the first and the second regions contains an element M. The first region contains a first crystal having a layered rock-salt structure. The second region contains a second crystal having a layered rock-salt structure. An orientation of the first crystal is different from an orientation of the second crystal.