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    Electronic device with secondary battery
    12.
    发明授权
    Electronic device with secondary battery 有权

    公开(公告)号：US11101492B2

    公开(公告)日：2021-08-24

    申请号：US16787105

    申请日：2020-02-11

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Minoru Takahashi ,  Ryota Tajima ,  Takuya Miwa ,  Yuugo Goto

    IPC: H01M10/04 ,  H01M50/463 ,  H01M10/42 ,  H01M50/10

    Abstract: In the case where a film, which has 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 that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery. Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.

    Secondary battery and manufacturing method of the same
    14.
    发明授权
    Secondary battery and manufacturing method of the same 有权

    公开(公告)号：US10937999B2

    公开(公告)日：2021-03-02

    申请号：US14948681

    申请日：2015-11-23

    Applicant: Semiconductor Energy Laboratory Co., LTD.

    Inventor： Minoru Takahashi ,  Junpei Momo ,  Ryota Tajima

    IPC: H01M2/02 ,  H01M10/04 ,  H01M10/48 ,  H01M10/42 ,  H01M10/052 ,  H01M10/0585

    Abstract: In the case where a secondary battery is repetitively curved, portions which tend to cause deterioration such as crack or breakage are, for example, a positive electrode tab and a negative electrode tab. This is because these portions are narrow projected portions, and tend to have low mechanical strength against repetitive curving in some cases. In view of the above, the positive electrode tab and the negative electrode tab are provided in portions relatively less affected by curving. More specifically, secondary battery includes a positive electrode, a positive electrode lead electrically connected to the positive electrode, a negative electrode, a negative electrode lead electrically connected to the negative electrode, a separator, and an exterior body wrapping the positive electrode, the negative electrode, and the separator. The positive electrode, the separator, the negative electrode, and the exterior body can be curved in a first direction. The positive electrode lead and the negative electrode lead are drawn from opposite sides of the exterior body.

    Secondary battery and electronic device
    15.
    发明授权
    Secondary battery and electronic device 有权

    公开(公告)号：US10756311B2

    公开(公告)日：2020-08-25

    申请号：US15145007

    申请日：2016-05-03

    Applicant: Semiconductor Energy Laboratory Co., LTD.

    Inventor： Ryota Tajima

    IPC: H01M2/02 ,  H01M10/04

    Abstract: A secondary battery with high capacity per unit volume can be provided. A flexible secondary battery with a novel structure can be provided. A secondary battery that can be bent repeatedly can be provided. A highly reliable secondary battery can be provided. A long-life secondary battery can be provided. A secondary battery comprises an inner structure and an exterior body that surrounds the inner structure. The inner structure comprises a positive electrode and a negative electrode. The exterior body comprises a first exterior film and a second exterior film. A region comprising reduced graphene oxide lies between the first exterior film and the second exterior film. The graphene oxide preferably comprises a region where the concentration of oxygen is higher than or equal to 2 atomic percent and lower than or equal to 20 atomic percent.

    SECONDARY BATTERY
    18.
    发明申请
    SECONDARY BATTERY 审中-公开
    二次电池

    公开(公告)号：US20140023920A1

    公开(公告)日：2014-01-23

    申请号：US13940287

    申请日：2013-07-12

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Shunpei YAMAZAKI ,  Teppei Oguni ,  Tamae Moriwaka ,  Junpei Momo ,  Ryota Tajima ,  Nobuhiro Inoue

    IPC: H01M4/133

    CPC classification number: H01M4/133 ,  H01M4/587

    Abstract: A secondary battery in which graphite that is an active material can occlude and release lithium efficiently is provided. Further, a highly reliable secondary battery in which the amount of lithium inserted and extracted into/from graphite that is an active material is prevented from varying is provided. The secondary battery includes a negative electrode including a current collector and graphite provided over the current collector, and a positive electrode. The graphite includes a plurality of graphene layers. Surfaces of the plurality of graphene layers are provided substantially along the direction of an electric field generated between the positive electrode and the negative electrode.

    Abstract translation: 提供了作为活性物质的石墨能够有效地吸留和释放锂的二次电池。 此外，提供了一种高可靠性的二次电池，其中防止插入和从石墨中提取的作为活性材料的锂的量变化。 二次电池包括设置在集电体上方的集电体和石墨的负极和正极。 石墨包括多个石墨烯层。 基本上沿着在正极和负极之间产生的电场的方向设置多个石墨烯层的表面。

    POWER STORAGE DEVICE
    19.
    发明申请
    POWER STORAGE DEVICE 审中-公开
    电源存储设备

    公开(公告)号：US20130164611A1

    公开(公告)日：2013-06-27

    申请号：US13717750

    申请日：2012-12-18

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kenryo NANBA ,  Minoru Takahashi ,  Ryota Tajima ,  Teppei Oguni ,  Junpei Momo

    IPC: H01M4/70

    CPC classification number: H01M4/70 ,  H01M4/134

    Abstract: Disclosed is a power storage device including a negative electrode and a positive electrode. The negative electrode includes a negative electrode current collector including a common portion and a plurality of protrusions protruding from the common portion, and a negative electrode active material layer which covers a side surface of the protrusion. The positive electrode faces the negative electrode with an electrolyte provided therebetween. In the plurality of protrusions, a distance between adjacent protrusions is a distance with which adjacent negative electrode active material layers are in contact with each other before the capacity of the negative electrode active material layer reaches the theoretical capacity of the negative electrode active material layer by insertion of carrier ions from the positive electrode.

    Abstract translation: 公开了一种包括负极和正极的蓄电装置。 负极包括负极集电体，该负极集电体包括公共部分和从公共部分突出的多个突起;以及负极活性物质层，其覆盖突起的侧面。 正电极面对负极，其间设置有电解质。 在多个突起中，相邻的突起之间的距离是在负极活性物质层的电容达到负极活性物质层的理论容量之前，相邻的负极活性物质层彼此接触的距离， 从正极插入载体离子。

    Secondary battery
    20.
    发明授权
    Secondary battery 有权

    公开(公告)号：US12230817B2

    公开(公告)日：2025-02-18

    申请号：US18237635

    申请日：2023-08-24

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Minoru Takahashi ,  Ryota Tajima

    IPC: H01M50/186 ,  H01M50/10 ,  H01M50/105 ,  H01M50/116 ,  H01M50/119 ,  H01M50/121 ,  H01M50/129 ,  H01M50/136 ,  H01M50/183 ,  H01M50/184 ,  H01M50/198

    Abstract: A secondary battery with an exterior body having a novel scaling structure, and a structure of a sealing portion that relaxes a stress of deformation are provided. The secondary battery includes a positive electrode, a negative electrode, an electrolyte solution, and an exterior body enclosing at least part of the positive electrode, at least part of the negative electrode, and the electrolyte solution. The exterior body includes a first region having a shape with a curve, a shape with a wavy line, a shape with an arc, or a shape with a plurality of inflection points, and a second region having the same shape as the first region. The first region is in contact with the second region. Alternatively, the first region has a shape without a straight line. The secondary battery may be flexible, and the exterior body in a region having flexibility may include the first region.

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