公开(公告)号：US11742543B2

公开(公告)日：2023-08-29

申请号：US17980073

申请日：2022-11-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Ryota Tajima

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

CPC classification number: 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.

公开(公告)号：US11594752B2

公开(公告)日：2023-02-28

申请号：US17315766

申请日：2021-05-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Minoru Takahashi

IPC: H01M10/0525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/139 ,  H01M4/13 ,  H01M4/36 ,  H01M10/058

Abstract: The adhesion between metal foil serving as a current collector and a negative electrode active material is increased to enable long-term reliability. An electrode active material layer (including a negative electrode active material or a positive electrode active material) is formed over a base, a metal film is formed over the electrode active material layer by sputtering, and then the base and the electrode active material layer are separated at the interface therebetween; thus, an electrode is formed. The electrode active material particles in contact with the metal film are bonded by being covered with the metal film formed by the sputtering. The electrode active material is used for at least one of a pair of electrodes (a negative electrode or a positive electrode) in a lithium-ion secondary battery.

公开(公告)号：US11444311B2

公开(公告)日：2022-09-13

申请号：US16925617

申请日：2020-07-10

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Ryota Tajima

IPC: H01M10/04 ,  H01M50/116 ,  H01M50/124 ,  H01M50/105 ,  H01G9/048 ,  H01G9/145 ,  H01G11/78

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, scaling 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：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.

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.

公开(公告)号：US10797367B2

公开(公告)日：2020-10-06

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 ,  H01M10/637 ,  H01M10/44 ,  H01M10/63 ,  H01M10/46 ,  H01M10/48 ,  H02J7/35 ,  H02S10/20 ,  H01M10/615 ,  H01M10/0525 ,  H02J7/00 ,  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.

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.

公开(公告)号：US20180076489A1

公开(公告)日：2018-03-15

申请号：US15698695

申请日：2017-09-08

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Mayumi Mikami ,  Yohei Momma ,  Minoru Takahashi ,  Hiroshi Kadoma ,  Teppei Oguni ,  Satoshi Seo

IPC: H01M10/42 ,  H01M10/0525 ,  H01M4/505 ,  H01M4/525 ,  H01M4/36 ,  H01G11/36 ,  H01G11/42 ,  H01G11/46 ,  H01G11/26 ,  C07F7/18

CPC classification number: H01M10/4235 ,  C07F7/12 ,  C07F7/1804 ,  H01G11/06 ,  H01G11/26 ,  H01G11/30 ,  H01G11/36 ,  H01G11/38 ,  H01G11/42 ,  H01G11/46 ,  H01G11/50 ,  H01G11/52 ,  H01G11/58 ,  H01M4/131 ,  H01M4/366 ,  H01M4/505 ,  H01M4/525 ,  H01M4/625 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  Y02E60/122

Abstract: A novel electrode, a novel power storage device, an electrode with less deterioration, an electrode with a high capacity, a long-life power storage device, a power storage device with less deterioration, a power storage device with high energy density, or a highly reliable power storage device is provided. The electrode includes a graphene compound including a graphene layer and a substituted or unsubstituted chain group, and an active material. The graphene layer is bonded to the chain group through a substituent containing silicon. The graphene compound includes a region in contact with the active material in particle form. The active material includes an element A, which is one or more elements selected from elements belonging to Group 1 and elements belonging to Group 2, and an element M, which is one or more elements selected from manganese and nickel. The chain group includes one or more groups selected from a carbonyl group, an ester group, a carboxyl group, an ether group, and an epoxy group.

公开(公告)号：US09768467B2

公开(公告)日：2017-09-19

申请号：US14245037

申请日：2014-04-04

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Shunpei Yamazaki ,  Minoru Takahashi

IPC: H01M10/0525 ,  H01M4/62 ,  H01M4/04 ,  H01M4/139 ,  H01M4/13 ,  H01M4/36 ,  H01M10/058

CPC classification number: H01M10/0525 ,  H01M4/0404 ,  H01M4/0426 ,  H01M4/13 ,  H01M4/139 ,  H01M4/366 ,  H01M4/621 ,  H01M10/058 ,  H01M2220/30 ,  Y10T29/49108 ,  Y10T29/49115

Abstract: The adhesion between metal foil serving as a current collector and a negative electrode active material is increased to enable long-term reliability. An electrode active material layer (including a negative electrode active material or a positive electrode active material) is formed over a base, a metal film is formed over the electrode active material layer by sputtering, and then the base and the electrode active material layer are separated at the interface therebetween; thus, an electrode is formed. The electrode active material particles in contact with the metal film are bonded by being covered with the metal film formed by the sputtering. The electrode active material is used for at least one of a pair of electrodes (a negative electrode or a positive electrode) in a lithium-ion secondary battery.

公开(公告)号：US09614258B2

公开(公告)日：2017-04-04

申请号：US14107347

申请日：2013-12-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Minoru Takahashi ,  Kei Takahashi ,  Jun Koyama ,  Junpei Momo ,  Tamae Moriwaka

IPC: H02J7/00 ,  H01M10/48 ,  G01R31/36

CPC classification number: H01M10/48 ,  G01R31/3606 ,  H01M10/486

Abstract: To provide a power storage device, an operation condition of which is easily analyzed. A secondary battery includes a sensor that is a measurement unit, a microcontroller unit that is a determination unit, and a memory that is a memory unit. With the sensor, conditions of the secondary battery such as the remaining battery power, the voltage, the current, and the temperature are measured. The microcontroller unit performs arithmetic processing of the measurement results and determines the operation condition of the secondary battery. Further, the microcontroller unit stores the measurement result in the memory in accordance with the operation condition of the secondary battery.