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公开(公告)号：US10770729B2
公开(公告)日：2020-09-08
申请号：US14988159
申请日：2016-01-05
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryota Tajima , Junpei Momo , Masaki Yamakaji
Abstract: A flexible power storage device or a power storage device of which the capacity and cycle characteristics do not easily deteriorate even when the power storage device is curved is provided. An electrode in which an active material layer, a current collector, and a friction layer are stacked in this order is provided. Furthermore, a power storage device that includes the electrode as at least one of a positive electrode and a negative electrode is provided.
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公开(公告)号：US20200266397A1
公开(公告)日：2020-08-20
申请号：US16812412
申请日：2020-03-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru TAKAHASHI , Ryota Tajima
Abstract: A secondary battery with an exterior body having a novel sealing 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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公开(公告)号：US10720662B2
公开(公告)日：2020-07-21
申请号：US14993413
申请日：2016-01-12
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Ryota Tajima
IPC: H01M10/00 , H01M10/04 , H01M10/0525
Abstract: When stress is concentrated on an electrode and a tab to which a lead of the electrode is connected in a secondary battery with a curved shape, the tab might be broken. The secondary battery including a first electrode, a second electrode, a separator, a first lead, and a second lead includes a first portion, a second portion, and a third portion located between the first portion and the second portion. The first electrode overlaps with the second electrode with the separator provided therebetween in the first portion and the second portion. The first electrode is folded in the third portion so as to form a first folded portion, and the first lead is connected to the first folded portion. The second electrode is folded in the third portion so as to form a second folded portion, and the second lead is connected to the second folded portion.
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公开(公告)号：US10665888B2
公开(公告)日：2020-05-26
申请号：US15642386
申请日：2017-07-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Ryota Tajima
IPC: H01M10/04
Abstract: To provide a flexible, highly reliable, and sheet-like power storage device. The power storage device including a flexible substrate; a positive electrode lead and a negative electrode lead over the flexible substrate; and a plurality of power storage elements over the flexible substrate. The plurality of power storage elements each includes a stack body including a sheet-like positive electrode; a sheet-like negative electrode; and an electrolyte therebetween in an exterior body. An edge portion of the sheet-like positive electrode which extends to the outside of the exterior body is electrically connected to the positive electrode lead through a positive electrode tab provided for the exterior body. An edge portion of the sheet-like negative electrode which extends to the outside of the exterior body is electrically connected to the negative electrode lead through a negative electrode tab provided for the exterior body.
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公开(公告)号：US10608290B2
公开(公告)日：2020-03-31
申请号：US14943070
申请日：2015-11-17
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Masaki Yamakaji , Junpei Momo , Ryota Tajima , Takahiro Kasahara
IPC: H01M10/42 , H01M10/48 , H01M2/02 , H01M10/0525
Abstract: To provide a lithium-ion storage battery or electronic device that is flexible and highly safe. One embodiment of the present invention is a flexible storage battery including a positive electrode, a negative electrode, a separator between the positive electrode and the negative electrode, an exterior body that surrounds the positive electrode, the negative electrode, and the separator, and a wiring provided along the exterior body. At least part of the wiring is more easily breakable by deformation than the exterior body. The wiring is more vulnerable to deformation than the exterior body and thus damaged earlier than the exterior body. Damage to the wiring is detected and an alert is sent to a user; thus, the use of the storage battery can be stopped before the exterior body is damaged.
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Patent Agency Ranking
公开(公告)号：US10586955B2
公开(公告)日：2020-03-10
申请号：US16382249
申请日：2019-04-12
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Ryota Tajima
Abstract: A secondary battery with an exterior body having a novel sealing 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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公开(公告)号：US10434847B2
公开(公告)日：2019-10-08
申请号：US15500437
申请日：2015-07-31
Applicant: Semiconductor Energy Laboratory Co., Ltd.
Inventor： Kensuke Yoshizumi , Ryota Tajima
Abstract: A display device or a driving support system which enables a driver to obtain information easily is provided. A display device or a driving support system which is unlikely to impose a burden on a driver is provided. A display device or a driving support system which is suitable for space saving is provided. A display device or a driving support system which is capable of large-area display is provided. A display device or a driving support system which does not impair the aesthetic appearance of the car interior is provided.The display device includes a display panel which has flexibility and can be transformed between a first form and a second form, and a driving means having a function of reversibly changing the display panel between the first form and the second form. The first form is a form in which a display surface of the display panel is suspended, and the second form is a form in which the display panel is stored upward.
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公开(公告)号：US10333111B2
公开(公告)日：2019-06-25
申请号：US15296081
申请日：2016-10-18
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Ryota Tajima
IPC: H01M6/00 , H01M2/02 , H01M10/0525 , H01M10/04 , H01M10/0585 , H01M10/052
Abstract: A battery capable of changing its form safely is provided. A bendable battery having a larger thickness is provided. A battery with increased capacity is provided. For an exterior body of the battery, a film in the shape of a periodic wave in one direction is used. A space is provided in an area surrounded by the exterior body and between an end portion of the electrode stack that is not fixed and an interior wall of the exterior body. Furthermore, the phases of waves of a pair of portions of the exterior body between which the electrode stack is located are different from each other. In particular, the phases are different from each other by 180 degrees so that wave crest lines overlap with each other and wave trough lines overlap with each other.
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公开(公告)号：US10236483B2
公开(公告)日：2019-03-19
申请号：US14814745
申请日：2015-07-31
Applicant: Semiconductor Energy Laboratory Co., LTD.
Inventor： Ryota Tajima , Masaaki Hiroki , Daisuke Furumatsu
IPC: H01M2/10 , H01M2/02 , H01M2/18 , H01M2/30 , H01M10/0525 , H01M10/0583 , H01M10/04
Abstract: A wearable device needs to have a design corresponding to complicated surfaces of human bodies. Thus, an electronic device that can fit the characteristics of each individual human body after being purchased and can be worn naturally and comfortably is provided. The electronic device includes a secondary battery which can be transformed. By using a secondary battery which can be transformed, for example, a secondary battery can be efficiently placed in a narrow and elongated space in the electronic device, and the elongated secondary battery can be bent together with the electronic device. Furthermore, the weight balance of the electronic device can be easily adjusted.
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公开(公告)号：US10217971B2
公开(公告)日：2019-02-26
申请号：US14558795
申请日：2014-12-03
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Ryota Tajima
IPC: H01M2/02 , H01G11/78 , H01G11/06 , H01M10/052
Abstract: A power storage unit or the like which has flexibility is achieved. An exterior body has projections and depressions. For example, part of the exterior body has projections and depressions in a wave cross-sectional shape. The shape of the projections and depressions is not limited to a shape with a curve and may be a shape with a straight line, such as a rectangle wave shape or a triangle wave shape. The projections and depressions allows the exterior body to be easily shrunk on the inner side of a bend portion and easily stretched on the outer side of the bend portion.
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