公开(公告)号：US20160322612A1

公开(公告)日：2016-11-03

申请号：US15138596

申请日：2016-04-26

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Minoru TAKAHASHI ,  Daisuke Furumatsu ,  Daisuke Suzawa ,  Hirofumi Misono

IPC: H01M2/02 ,  H01G11/78 ,  H01G11/06 ,  H01G11/28 ,  H01M10/0585 ,  H01M10/0525

CPC classification number: H01M2/0275 ,  H01G11/06 ,  H01G11/26 ,  H01G11/28 ,  H01G11/70 ,  H01G11/82 ,  H01M10/0525 ,  H01M10/0585 ,  Y02E60/13

Abstract: The power storage device includes a positive electrode, a negative electrode, an electrolyte, and an exterior body. The positive electrode includes a positive electrode current collector and a positive electrode active material layer in contact with the positive electrode current collector. The negative electrode includes a negative electrode current collector and a negative electrode active material layer in contact with the negative electrode current collector. The positive electrode active material layer and the negative electrode active material layer overlap with each other. The positive electrode, the negative electrode, and the electrolyte are surrounded by the exterior body. When a length of the positive electrode active material layer is Py, a width of the positive electrode active material layer is Px, a length of the negative electrode active material layer is Ny, and a width of the negative electrode active material layer is Nx, Py>Px, Ny>Nx, and Ny>Py+Nx−Px are satisfied.

Abstract translation: 蓄电装置包括正极，负极，电解质和外部主体。 正极包括与正极集电体接触的正极集电体和正极活性物质层。 负极包括与负极集电体接触的负极集电体和负极活性物质层。 正极活性物质层和负极活性物质层彼此重叠。 正电极，负电极和电解质被外部体包围。 当正极活性物质层的长度为Py时，正极活性物质层的宽度为Px，负极活性物质层的长度为Ny，负极活性物质层的宽度为Nx， Py> Px，Ny> Nx，Ny> Py + Nx-Px。

公开(公告)号：US11108105B2

公开(公告)日：2021-08-31

申请号：US14995317

申请日：2016-01-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Minoru Takahashi ,  Daisuke Suzawa ,  Nozomi Uto

IPC: H01M10/00 ,  H01M50/10 ,  H01M50/116 ,  H01M10/0525 ,  H01M50/183

Abstract: In the case where a film having lower strength than a metal can is used as an exterior body of a secondary battery, a current collector provided in a region surrounded by the exterior body, an active material layer provided on a surface of the current collector, or the like might be damaged when force is externally applied to the secondary battery. A secondary battery resistant to external force is provided. A cushioning material is provided in a region sandwiched by an exterior body of the secondary battery. Specifically, the cushioning material is provided on the periphery of an electrode group including a positive electrode current collector, a positive electrode active material layer formed on at least one surface of the positive electrode current collector, a separator, a negative electrode current collector, and a negative electrode active material layer formed on at least one surface of the negative electrode current collector.

公开(公告)号：US10367176B2

公开(公告)日：2019-07-30

申请号：US15138596

申请日：2016-04-26

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Minoru Takahashi ,  Daisuke Furumatsu ,  Daisuke Suzawa ,  Hirofumi Misono

IPC: H01M10/05 ,  H01M2/02 ,  H01M10/0585 ,  H01M10/0525 ,  H01G11/28 ,  H01G11/26 ,  H01G11/70 ,  H01G11/82 ,  H01G11/06

Abstract: The power storage device includes a positive electrode, a negative electrode, an electrolyte, and an exterior body. The positive electrode includes a positive electrode current collector and a positive electrode active material layer in contact with the positive electrode current collector. The negative electrode includes a negative electrode current collector and a negative electrode active material layer in contact with the negative electrode current collector. The positive electrode active material layer and the negative electrode active material layer overlap with each other. The positive electrode, the negative electrode, and the electrolyte are surrounded by the exterior body. When a length of the positive electrode active material layer is Py, a width of the positive electrode active material layer is Px, a length of the negative electrode active material layer is Ny, and a width of the negative electrode active material layer is Nx, Py>Px, Ny>Nx, and Ny>Py+Nx−Px are satisfied.