公开(公告)号：US20250070284A1

公开(公告)日：2025-02-27

申请号：US18941267

申请日：2024-11-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Shunpei YAMAZAKI ,  Masaaki HIROKI ,  Kei TAKAHASHI ,  Junpei MOMO

IPC: H01M10/44 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/46 ,  H01M10/48 ,  H01M10/615 ,  H01M10/63 ,  H01M10/637 ,  H01M10/6571 ,  H02J7/35 ,  H02S10/20

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.

公开(公告)号：US20240266587A1

公开(公告)日：2024-08-08

申请号：US18623238

申请日：2024-04-01

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA

IPC: H01M10/04 ,  H01G9/048 ,  H01G9/145 ,  H01G11/78 ,  H01M50/105 ,  H01M50/116 ,  H01M50/119 ,  H01M50/121 ,  H01M50/122 ,  H01M50/124 ,  H01M50/136

CPC classification number: H01M10/0436 ,  H01G9/048 ,  H01G9/145 ,  H01M50/105 ,  H01M50/116 ,  H01M50/119 ,  H01M50/121 ,  H01M50/122 ,  H01M50/124 ,  H01M50/136 ,  H01G11/78 ,  H01M2220/20 ,  H01M2220/30 ,  Y02E60/13 ,  Y02T10/70

Abstract: A secondary battery suitable for a portable information terminal or a wearable device is provided. An electronic device having a novel structure which can have various forms and a secondary battery that fits the forms of the electronic device are provided. In the secondary battery, sealing is performed using a film provided with depressions or projections that ease stress on the film due to application of external force. A pattern of depressions or projections is formed on the film by pressing, e.g., embossing.

公开(公告)号：US20230246224A1

公开(公告)日：2023-08-03

申请号：US18132504

申请日：2023-04-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Yuugo GOTO ,  Yumiko YONEDA ,  Takuya MIWA ,  Ryota TAJIMA

IPC: H01M10/04 ,  H01M50/176 ,  H01M50/121 ,  H01M50/119 ,  H01M50/116 ,  H01M50/543

CPC classification number: H01M10/0436 ,  H01M50/176 ,  H01M50/121 ,  H01M50/119 ,  H01M50/116 ,  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 in 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.

公开(公告)号：US20230059867A1

公开(公告)日：2023-02-23

申请号：US17980073

申请日：2022-11-03

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 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.

公开(公告)号：US20220166090A1

公开(公告)日：2022-05-26

申请号：US17542806

申请日：2021-12-06

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA

IPC: H01M50/116 ,  H01M10/04 ,  H01M50/10 ,  H01M10/0525

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.

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

IPC: H01M2/02 ,  H01M2/08

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.

公开(公告)号：US20180277912A1

公开(公告)日：2018-09-27

申请号：US15984452

申请日：2018-05-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Shunpei YAMAZAKI ,  Masaaki HIROKI ,  Kei TAKAHASHI ,  Junpei MOMO

IPC: H01M10/6571 ,  H01M10/44 ,  H01M10/615 ,  H02J7/35 ,  H02J7/00 ,  H01M10/48 ,  H01M10/46 ,  H02S10/20 ,  H01M10/0525 ,  H01M10/637 ,  H01M10/63 ,  H01M10/052

Abstract: Disclosed is a power storage unit which can safely operate over a wide temperature range. The power storage unit in a power storage device; a heater for heating the power storage device; a temperature sensor for sensing the to of the power storage device; and a control circuit configured to in 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.

公开(公告)号：US20180198106A1

公开(公告)日：2018-07-12

申请号：US15914590

申请日：2018-03-07

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA

IPC: H01M2/30 ,  H01M10/0585 ,  H01M10/0525 ,  H01M2/06 ,  H01M2/26

CPC classification number: H01M2/30 ,  H01M2/06 ,  H01M2/266 ,  H01M10/0525 ,  H01M10/0585 ,  Y10T29/49108

Abstract: Provided is a power storage device having a positive electrode and a negative electrode which are enveloped in an exterior body. The positive electrode has a first tab region which extends outside the exterior body so as to electrically connect the positive electrode to a positive electrode lead. Similarly, the negative electrode has a second tab region which extends outside the exterior body so as to electrically connect the negative electrode to a negative electrode lead. Each of the first tab region and the second tab region has a plurality of holes which are placed in the exterior body. A method for fabricating the power storage device is also disclosed.

公开(公告)号：US20180048034A1

公开(公告)日：2018-02-15

申请号：US15725322

申请日：2017-10-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaaki HIROKI ,  Minoru TAKAHASHI ,  Junpei MOMO

IPC: H01M10/52 ,  H01M2/02

CPC classification number: H01M10/52 ,  H01M2/0277 ,  H01M2/0285 ,  H01M2/0292 ,  H01M2/1264 ,  H01M2/1613 ,  H01M2/1653 ,  H01M2/1666 ,  H01M10/0525

Abstract: To provide a highly reliable power storage device, to improve the security of a power storage device, and to suppress deterioration of a power storage device, a power storage device includes, inside an exterior material, a positive electrode, a negative electrode facing the positive electrode, an electrolyte solution between the positive electrode and the negative electrode, and an adsorbent. A separation body which is impermeable to the electrolyte solution and permeable to a gas is provided between the electrolyte solution and the adsorbent.

公开(公告)号：US20170117589A1

公开(公告)日：2017-04-27

申请号：US15334571

申请日：2016-10-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Teppei OGUNI ,  Kazuhei NARITA ,  Junya GOTO ,  Ai NAKAGAWA ,  Minoru TAKAHASHI

IPC: H01M10/42 ,  H01M4/587 ,  H01M4/04 ,  H01M4/62 ,  H01M4/66 ,  G01R31/36 ,  H01M10/0569 ,  H01M2/16 ,  H01M10/0567 ,  H05K5/00 ,  G01R31/02 ,  H01M10/0525 ,  H01M4/525

CPC classification number: H01M10/4235 ,  G01R31/02 ,  G01R31/3832 ,  H01M2/1653 ,  H01M4/0404 ,  H01M4/0435 ,  H01M4/0471 ,  H01M4/525 ,  H01M4/587 ,  H01M4/622 ,  H01M4/623 ,  H01M4/625 ,  H01M4/661 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/0568 ,  H01M10/0569 ,  H01M2220/30 ,  H01M2300/0037 ,  H05K5/0017 ,  H05K5/0086 ,  Y02T10/7011

Abstract: To provide a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment. To provide a power storage device that is highly safe against heat treatment. The power storage device includes a positive electrode, a negative electrode, a separator, an electrolytic solution, and an exterior body. The separator is located between the positive electrode and the negative electrode. The separator contains polyphenylene sulfide. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiFSA at a concentration of higher than or equal to 0.1 wt % and lower than or equal to 50 wt % in the electrolytic solution. One of the solvents is propylene carbonate.