公开(公告)号：US11670807B2

公开(公告)日：2023-06-06

申请号：US17116678

申请日：2020-12-09

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaki Yamakaji ,  Junpei Momo ,  Ryota Tajima ,  Takahiro Kasahara

IPC: H01M10/42 ,  H01M10/48 ,  H01M50/124 ,  H01M50/129 ,  H01M50/119 ,  H01M50/121 ,  H01M10/0525

CPC classification number: H01M10/425 ,  H01M10/48 ,  H01M10/488 ,  H01M50/119 ,  H01M50/121 ,  H01M50/124 ,  H01M50/129 ,  H01M10/0525 ,  H01M2220/30 ,  Y02E60/10

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.

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：US10862177B2

公开(公告)日：2020-12-08

申请号：US16360065

申请日：2019-03-21

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Junpei Momo ,  Kazutaka Kuriki ,  Hiromichi Godo ,  Shunpei Yamazaki

IPC: H01M2/26 ,  H01M10/46 ,  H02J50/20 ,  H01M10/0562 ,  H01M10/613 ,  H01L21/822 ,  H01L27/06 ,  H01M10/052 ,  H01M10/42 ,  H01M10/623 ,  A61N1/378 ,  G06F1/16 ,  H01L27/12 ,  H01L29/786 ,  H01M10/0525 ,  H01M10/0585 ,  H02J7/02

Abstract: A semiconductor device in which a circuit and a battery are efficiently stored is provided. In the semiconductor device, a first transistor, a second transistor, and a secondary battery are provided over one substrate. A channel region of the second transistor includes an oxide semiconductor. The secondary battery includes a solid electrolyte, and can be fabricated by a semiconductor manufacturing process. The substrate may be a semiconductor substrate or a flexible substrate. The secondary battery has a function of being wirelessly charged.

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：US10483044B2

公开(公告)日：2019-11-19

申请号：US15685726

申请日：2017-08-24

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Ryota Tajima ,  Tamae Moriwaka ,  Junpei Momo ,  Teppei Oguni ,  Kai Kimura ,  Kazutaka Kuriki ,  Shunpei Yamazaki

IPC: H01M4/36 ,  H01G9/042 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01G11/06 ,  H01G11/26 ,  H01G11/50 ,  H01M10/0525

Abstract: To improve the reliability of a power storage device. A granular active material including carbon is used, and a net-like structure is formed on part of a surface of the granular active material. In the net-like structure, a carbon atom included in the granular active material is bonded to a silicon atom or a metal atom through an oxygen atom. Formation of the net-like structure suppresses reductive decomposition of an electrolyte solution, leading to a reduction in irreversible capacity. A power storage device using the above active material has high cycle performance and high reliability.

公开(公告)号：US10403879B2

公开(公告)日：2019-09-03

申请号：US14976504

申请日：2015-12-21

Applicant: Semiconductor Energy Laboratory Co., LTD.

Inventor： Junpei Momo ,  Yohei Momma ,  Masaki Yamakaji ,  Teppei Oguni

IPC: H01M4/04 ,  H01M10/052 ,  H01M10/04 ,  H01M10/058 ,  C25D11/00 ,  C25D21/02 ,  C25D21/10

Abstract: To provide a method of manufacturing 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 manufacture 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 manufacture of a highly reliable secondary battery.

公开(公告)号：US10263243B2

公开(公告)日：2019-04-16

申请号：US15932208

申请日：2018-02-16

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Nobuhiro Inoue ,  Sachiko Kataniwa ,  Kazutaka Kuriki ,  Junpei Momo

IPC: H01M2/02 ,  H01M4/04 ,  H01G11/28 ,  H01M4/62 ,  H01G11/50 ,  H01G11/84 ,  H01M4/133 ,  H01M4/583 ,  H01M10/0525 ,  H01M4/02

Abstract: An object is to suppress electrochemical decomposition of an electrolyte solution and the like at a negative electrode in a lithium ion battery or a lithium ion capacitor; thus, irreversible capacity is reduced, cycle performance is improved, or operating temperature range is extended. A negative electrode for a power storage device including a negative electrode current collector, a negative electrode active material layer which is over the negative electrode current collector and includes a plurality of particles of a negative electrode active material, and a film covering part of the negative electrode active material. The film has an insulating property and lithium ion conductivity.

公开(公告)号：US09754728B2

公开(公告)日：2017-09-05

申请号：US14032214

申请日：2013-09-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro Inoue ,  Ryota Tajima ,  Tamae Moriwaka ,  Junpei Momo ,  Teppei Oguni ,  Kai Kimura ,  Kazutaka Kuriki ,  Shunpei Yamazaki

IPC: H01M4/133 ,  H01G9/042 ,  H01M4/36 ,  H01M4/02 ,  H01M4/134 ,  H01G11/06 ,  H01G11/26 ,  H01G11/50 ,  H01M10/0525

CPC classification number: H01G9/042 ,  H01G11/06 ,  H01G11/26 ,  H01G11/50 ,  H01M4/02 ,  H01M4/133 ,  H01M4/134 ,  H01M4/366 ,  H01M10/0525 ,  Y02E60/122 ,  Y02E60/13

Abstract: To improve the reliability of a power storage device. A granular active material including carbon is used, and a net-like structure is formed on part of a surface of the granular active material. In the net-like structure, a carbon atom included in the granular active material is bonded to a silicon atom or a metal atom through an oxygen atom. Formation of the net-like structure suppresses reductive decomposition of an electrolyte solution, leading to a reduction in irreversible capacity. A power storage device using the above active material has high cycle performance and high reliability.

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.

公开(公告)号：US09577290B2

公开(公告)日：2017-02-21

申请号：US13719562

申请日：2012-12-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kyosuke Ito ,  Toru Itakura ,  Nobuhiro Inoue ,  Jun Ishikawa ,  Junpei Momo

IPC: H01M10/0566 ,  H01M10/0569 ,  H01M10/052

CPC classification number: H01M10/0569 ,  H01M10/052 ,  H01M2300/0045 ,  Y02E60/122 ,  Y02T10/7011

Abstract: A power storage device using an organic solvent as a nonaqueous solvent for a nonaqueous electrolyte, in which a CV charging period in CCCV charging can be prevented from being extended and which has high performance, can be provided. The power storage device includes a positive electrode, a negative electrode, and a nonaqueous electrolyte. The nonaqueous electrolyte includes an ionic liquid including an alicyclic quaternary ammonium cation having one or more substituents and a counter anion to the alicyclic quaternary ammonium cation, a cyclic ester, and an alkali metal salt. In particular, in the power storage device, the ionic liquid content is greater than or equal to 70 wt % and less than 100 wt % per unit weight of the ionic liquid and the cyclic ester in the nonaqueous electrolyte, or greater than or equal to 50 wt % and less than 80 wt % per unit weight of the nonaqueous electrolyte.

Abstract translation: 可以提供使用有机溶剂作为非水电解质的非水溶剂的蓄电装置，其中可以防止CCCV充电中的CV充电期延长并且具有高性能。 蓄电装置包括正极，负极和非水电解质。 非水电解质包括离子液体，其包含具有一个或多个取代基的脂环族季铵阳离子和与脂环族季铵阳离子的抗衡阴离子，环状酯和碱金属盐。 特别地，在蓄电装置中，离子液体含量大于或等于70重量％且小于100重量％，每单位重量的离子液体和非水电解质中的环状酯，或大于或等于 50重量％且小于80重量％的每单位重量的非水电解质。