公开(公告)号：US20200295314A1

公开(公告)日：2020-09-17

申请号：US16890049

申请日：2020-06-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junya GOTO ,  Ai NAKAGAWA ,  Yuika SATO

IPC: H01M2/02 ,  H01G11/80 ,  H01G11/78 ,  H01G11/82

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：US20180366726A1

公开(公告)日：2018-12-20

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

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：US20160126541A1

公开(公告)日：2016-05-05

申请号：US14921126

申请日：2015-10-23

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junya GOTO ,  Mako MOTOYOSHI ,  Yuika SATO ,  Takahiro KAWAKAMI

IPC: H01M4/36 ,  H01M4/587 ,  H01M4/04 ,  H01M4/485 ,  H01M4/131 ,  H01M4/133

CPC classification number: H01M4/364 ,  H01M4/0445 ,  H01M4/131 ,  H01M4/133 ,  H01M4/134 ,  H01M4/485 ,  H01M4/587 ,  H01M4/625 ,  H01M4/70 ,  H01M2004/027

Abstract: A negative electrode and a secondary battery including the negative electrode are provided. A plurality of projections and depressions are provided in a negative electrode active material layer and a negative electrode current collector. The plurality of projections and depressions in the negative electrode active material layer absorb expansion of the negative electrode active material and suppress deformation thereof. The plurality of projections and depressions in the negative electrode current collector suppress deformation of the negative electrode current collector caused by expansion and contraction of the negative electrode active material.

Abstract translation: 设置负极和包含负极的二次电池。 在负极活性物质层和负极集电体中设置有多个凹凸。 负极活性物质层中的多个凹凸吸收负极活性物质的膨胀，抑制其变形。 负极集电体中的多个突起和凹陷抑制由负极活性物质的膨胀和收缩引起的负极集电体的变形。

公开(公告)号：US20160013469A1

公开(公告)日：2016-01-14

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 ,  H01M4/70 ,  H01M10/0525 ,  H01M2/02 ,  H01M4/66

CPC classification number: H01M4/13 ,  H01M2/0275 ,  H01M4/139 ,  H01M10/0525 ,  H01M2002/0205 ,  H01M2004/021 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/122

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.

Abstract translation: 提供具有新颖结构的电子装置，具体地说，具有可以改变为各种外观的新颖结构的电子装置。 具体地说，在集电体的一个或两个表面上形成活性物质层之后，部分除去弯曲区域中的活性物质层。 活性物质层的去除区域例如可以是直线形状，点状或矩阵形状。 在集电体的一个或两个表面上形成活性物质层之后，使用激光等进行用于去除照射区域中的活性物质层的一部分的激光加工。 在集电体的表面暴露的区域，没有设置活性物质层，该区域是不能充当电池的区域。 由于该区域，可以实现具有宽移动区域的二次电池。