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公开(公告)号：US12034327B2
公开(公告)日：2024-07-09
申请号：US17149779
申请日：2021-01-15
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Junpei Momo , Yutaka Shionoiri
CPC classification number: H02J7/0069 , H01G11/06 , H01G11/10 , H01M4/5825 , H01M10/0525 , H01M10/441 , H02J7/0024 , H01M10/4207
Abstract: Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.
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公开(公告)号：US11626637B2
公开(公告)日：2023-04-11
申请号：US16783205
申请日：2020-02-06
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Yuugo Goto , Yumiko Yoneda , Takuya Miwa , Ryota Tajima
IPC: H01M50/116 , H01M10/04 , H01M50/543 , H01M50/124
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 which is resistant to external force is obtained. An opening is provided in a central portion of the secondary battery; and a terminal is formed in the opening. An outer edge of the secondary battery is fixed by thermocompression bonding. In addition, the central portion of the secondary battery is fixed by thermocompression bonding, so that the amount of bending is limited even when the outer edge portion of the secondary battery is bent.
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公开(公告)号：US11563244B2
公开(公告)日：2023-01-24
申请号：US17154462
申请日：2021-01-21
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Shunpei Yamazaki , Masaaki Hiroki , Kei Takahashi , Junpei Momo
IPC: H02J7/00 , H01M10/44 , H01M10/637 , H01M10/63 , H01M10/6571 , H01M10/46 , H01M10/48 , H02J7/35 , H02S10/20 , H01M10/615 , H01M10/0525 , H01M10/052
Abstract: Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit includes: a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the temperature of the power storage device; and a control circuit configured to inhibit charge of the power storage device when its temperature is lower than a first temperature or higher than a second temperature. The first temperature is exemplified by a temperature which allows the formation of a dendrite over a negative electrode of the power storage device, whereas the second temperature is exemplified by a temperature which causes decomposition of a passivating film formed over a surface of a negative electrode active material.
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公开(公告)号：US11495853B2
公开(公告)日：2022-11-08
申请号：US16812412
申请日：2020-03-09
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Ryota Tajima
IPC: H01M50/116 , H01M50/10 , H01M50/183
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：US11233266B2
公开(公告)日：2022-01-25
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.
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Patent Agency Ranking
公开(公告)号：US10897152B2
公开(公告)日：2021-01-19
申请号：US15424152
申请日：2017-02-03
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Junpei Momo , Yutaka Shionoiri
Abstract: Deterioration of a power storage device is reduced. Switches that control the connections of a plurality of power storage devices separately are provided. The switches are controlled with a plurality of control signals, so as to switch between charge and discharge of each of the power storage devices or between serial connection and parallel connection of the plurality of power storage devices. Further, a semiconductor circuit having a function of carrying out arithmetic is provided for the power storage devices, so that a control system of the power storage devices or a power storage system is constructed.
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公开(公告)号：US10833309B2
公开(公告)日：2020-11-10
申请号：US15806755
申请日：2017-11-08
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Masaaki Hiroki
Abstract: A secondary battery in which convection in an electrolyte solution occurs easily is provided. A secondary battery whose electrolyte solution can be replaced is provided. A nonaqueous secondary battery includes a positive electrode, a negative electrode, a separator, and an electrolyte solution, and the separator includes grooves capable of making convection in the electrolyte solution occur easily. The nonaqueous secondary battery has at least one expected installation direction, and the grooves in the separator are preferably formed so as to be perpendicular to an expected installation surface. The exterior body includes a first opening for injection of an inert gas into the exterior body and a second opening for expelling or injection of an electrolyte solution from or into the exterior body. An electrolyte solution replacement apparatus has a function of injecting the inert gas through the first opening and expelling or injecting the electrolyte solution through the second opening.
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公开(公告)号：US10593929B2
公开(公告)日：2020-03-17
申请号：US14789174
申请日：2015-07-01
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Yohei Momma , Junpei Momo , Minoru Takahashi , Takahiro Kawakami
IPC: H01M4/04 , H01M4/13 , H01M10/05 , H01M4/139 , H01M10/058
Abstract: To provide a fabricating method and a fabricating apparatus for a lithium-ion secondary battery having stable charge characteristics and lifetime characteristics. A positive electrode is subjected to an electrochemical reaction in a large amount of electrolytic solution in advance before a secondary battery is completed. In this manner, the positive electrode can have stability. The use of the positive electrode enables fabrication of a highly reliable secondary battery. Similarly, a negative electrode is subjected to an electrochemical reaction in a large amount of electrolytic solution in advance. The use of the negative electrode enables fabrication of a highly reliable secondary battery.
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公开(公告)号：US10476289B2
公开(公告)日：2019-11-12
申请号：US16387760
申请日：2019-04-18
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Junpei Momo , Hiroyuki Miyake , Kei Takahashi
Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1
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公开(公告)号：US10298043B2
公开(公告)日：2019-05-21
申请号：US13714459
申请日：2012-12-14
Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
Inventor： Minoru Takahashi , Junpei Momo , Hiroyuki Miyake , Kei Takahashi
Abstract: A lithium ion secondary battery includes a positive electrode including a positive electrode active material layer containing lithium iron phosphate, a negative electrode including a negative electrode active material layer containing graphite, and an electrolyte including a lithium salt and a solvent including ethylene carbonate and diethyl carbonate between the positive electrode and the negative electrode. When the battery temperature of the lithium ion secondary battery or the temperature of an environment in which the lithium ion secondary battery is used is T and given temperatures are T1 and T2 (T1
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