公开(公告)号：US20240429360A1

公开(公告)日：2024-12-26

申请号：US18822848

申请日：2024-09-03

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Masaaki HIROKI ,  Ryota TAJIMA

IPC: H01M4/02 ,  H01M4/04 ,  H01M4/139

Abstract: Part of an electrode, specifically a current collector and an active material layer, for a secondary battery is subjected to cutting processing to have a complex shape. For example, a stack of the first current collector and the first active material layer has a first slit and a second slit. Each of the first slit and the second slit passing across the first current collector and the first active material layer and extending from an edge of the first current collector. Another stack of the second current collector and the second active material layer has a third slit and a fourth slit. Each of the third slit and the fourth slit passing across the second current collector and the second active material layer and extending from an edge of the second current collector.

公开(公告)号：US20240258575A1

公开(公告)日：2024-08-01

申请号：US18613703

申请日：2024-03-22

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazuhei NARITA ,  Ryota TAJIMA ,  Teppei OGUNI

IPC: H01M10/0569 ,  G04G19/00 ,  H01G11/28 ,  H01G11/32 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/84 ,  H01G11/86 ,  H01M4/36 ,  H01M4/525 ,  H01M4/587 ,  H01M4/66 ,  H01M10/0525 ,  H01M10/0568 ,  H01M50/414 ,  H01M50/429 ,  H01M50/44

CPC classification number: H01M10/0569 ,  G04G19/00 ,  H01G11/28 ,  H01G11/32 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/84 ,  H01G11/86 ,  H01M4/366 ,  H01M4/525 ,  H01M4/587 ,  H01M4/661 ,  H01M4/669 ,  H01M10/0525 ,  H01M10/0568 ,  H01M50/414 ,  H01M50/429 ,  H01M50/4295 ,  H01M50/44 ,  H01M2300/0037 ,  Y02E60/13 ,  Y02T10/70

Abstract: To provide a power storage device whose charge and discharge 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 or solvent-spun regenerated cellulosic fiber. The electrolytic solution contains a solute and two or more kinds of solvents. The solute contains LiBETA. One of the solvents is propylene carbonate.

公开(公告)号：US20240178456A1

公开(公告)日：2024-05-30

申请号：US18432698

申请日：2024-02-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Masaaki HIROKI ,  Daisuke FURUMATSU

IPC: H01M10/0583 ,  H01M10/04 ,  H01M10/0525 ,  H01M50/105 ,  H01M50/211 ,  H01M50/247 ,  H01M50/466

CPC classification number: H01M10/0583 ,  H01M10/0431 ,  H01M10/0525 ,  H01M50/105 ,  H01M50/211 ,  H01M50/247 ,  H01M50/466

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.

公开(公告)号：US20220399726A1

公开(公告)日：2022-12-15

申请号：US17879394

申请日：2022-08-02

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Koji KUSUNOKI ,  Toshiyuki ISA ,  Akihiro CHIDA ,  Kouhei TOYOTAKA ,  Ryota TAJIMA

IPC: H02J7/00 ,  H02J50/10 ,  H02J7/04 ,  H02J50/40

Abstract: Deterioration of a storage battery included in an electronic device is reduced. Power consumption of an electronic device is reduced. A power feeding device having excellent performance is provided. The power feeding device includes a power feeding coil, a control circuit, and a neural network and has a function of charging a storage battery with a wireless signal supplied by the power feeding coil. The control circuit has a function of estimating a remaining capacity value of the storage battery, the control circuit has a function of supplying the estimated remaining capacity value to the neural network, the neural network outputs a value corresponding to the supplied remaining capacity value to the control circuit, the control circuit determines a charge condition for the storage battery on the basis of the value output by the neural network, and the power feeding device has a function of charging the storage battery under the determined charge condition.

公开(公告)号：US20220209214A1

公开(公告)日：2022-06-30

申请号：US17606861

申请日：2020-04-16

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka KURIKI ,  Ryota TAJIMA ,  Yumiko YONEDA ,  Shunpei YAMAZAKI

IPC: H01M4/04 ,  C23C14/04 ,  H01M10/0562 ,  H01M10/0585

Abstract: An object is to achieve a manufacturing apparatus that can fully automate the manufacturing of a solid-state secondary battery. A mask alignment chamber, a first transfer chamber connected to the mask alignment chamber, a second transfer chamber connected to the first transfer chamber, a first film formation chamber connected to the second transfer chamber, a third transfer chamber connected to the first transfer chamber, and a second film formation chamber connected to the third transfer chamber are included. The first film formation chamber has a function of forming a positive electrode active material layer or a negative electrode active material layer by a sputtering method, the second film formation chamber has a function of forming a solid electrolyte layer by co-evaporation of an organic complex of lithium and SiOx (0

公开(公告)号：US20210280616A1

公开(公告)日：2021-09-09

申请号：US17329266

申请日：2021-05-25

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazutaka KURIKI ,  Ryota TAJIMA ,  Tamae MORIWAKA

IPC: H01L27/13 ,  H01M10/0565 ,  H01G11/46 ,  H01G11/56 ,  H01M10/052 ,  H01M10/0562 ,  H01M10/0585 ,  H01G11/08 ,  H01G11/84 ,  H01L27/12 ,  H01L29/24 ,  H01L29/66 ,  H01L29/786

Abstract: Disclosed is a power storage element including a positive electrode current collector layer and a negative electrode current collector layer which are arranged on the same plane and can be formed through a simple process. The power storage element further includes a positive electrode active material layer on the positive electrode current collector layer; a negative electrode active material layer on the negative electrode current collector layer; and a solid electrolyte layer in contact with at least the positive electrode active material layer and the negative electrode active material layer. The positive electrode active material layer and the negative electrode active material layer are formed by oxidation treatment.

公开(公告)号：US20210257669A1

公开(公告)日：2021-08-19

申请号：US17246793

申请日：2021-05-03

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Kazuhei NARITA ,  Ryota TAJIMA

IPC: H01M10/0569 ,  H01G11/52 ,  H01G11/60 ,  H01G11/62 ,  H01G11/68 ,  H01G11/78 ,  H01M4/66 ,  H01M10/052 ,  H01M10/0568 ,  H01M50/44 ,  H01M50/116 ,  H01M50/209 ,  H01M50/431 ,  H01M50/543 ,  H01M50/557 ,  H01M50/429

Abstract: Provided is a power storage device whose charging and discharging characteristics are unlikely to be degraded by heat treatment or 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 electrolyte, and an exterior body. The separator is positioned between the positive electrode and the negative electrode and includes polyphenylene sulfide or cellulosic fiber. The electrolyte includes propylene carbonate, ethylene carbonate, and vinylene carbonate, lithium hexafluorophosphate, and lithium bis(pentafluoroethanesulfonyl)amide. A concentration of lithium hexafluorophosphate with respect to the electrolyte is more than or equal to 0.01 wt % and less than or equal to 1.9 wt % in a weight ratio.

公开(公告)号：US20210055352A1

公开(公告)日：2021-02-25

申请号：US16980598

申请日：2019-03-05

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kei TAKAHASHI ,  Koji KUSUNOKI ,  Toshiyuki ISA ,  Akihiro CHIDA ,  Ryo YAMAUCHI ,  Kazutaka KURIKI ,  Ryota TAJIMA

IPC: G01R31/36 ,  G01R31/378 ,  G01R31/392 ,  G01R31/3842 ,  H01M10/48 ,  H01M10/0525

Abstract: A control method of a secondary battery in which malfunction is less likely to occur and abnormality detection can be performed with high accuracy is provided. A charge state estimation device of a secondary battery including a device which generates electromagnetic noise, a first detection means which measures a voltage value of a secondary battery electrically connected to the device, a second detection means which measures a current value of the secondary battery electrically connected to the device, a correction means which extracts a causal relationship between electromagnetic noise and a driving pattern from data including multiple electromagnetic noise obtained using the first detection means or the second detection means, and an arithmetic means which calculates a charge rate using a regression model based on data after data correction.

公开(公告)号：US20210005939A1

公开(公告)日：2021-01-07

申请号：US16767637

申请日：2018-11-30

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota TAJIMA ,  Toshiyuki ISA ,  Akihiro CHIDA

IPC: H01M10/42 ,  B60L58/18 ,  G01R31/367

Abstract: A highly safe power storage system is provided. If n (n is an integer over or equal to three) secondary batteries are used in a vehicle such as an electric vehicle, a circuit configuration is used with which the condition of each secondary battery is monitored using an anomaly detection unit; and if an anomaly such as a micro-short circuit is detected, only the detected anomalous secondary battery is electrically separated from the charging system or the discharging system. At least one microcomputer monitors anomalies in n secondary batteries consecutively, selects the anomalous secondary battery or the detected secondary battery which causes an anomaly, and gives an instruction to bypass the secondary battery with each switch.

公开(公告)号：US20200168892A1

公开(公告)日：2020-05-28

申请号：US16774296

申请日：2020-01-28

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Nobuhiro INOUE ,  Ryota TAJIMA ,  Naoki KURIHARA ,  Junpei MOMO

IPC: H01M4/134 ,  H01M4/62 ,  H01M4/66 ,  H01M10/052 ,  H01M4/38

Abstract: An object of one embodiment of the present invention is to provide a secondary battery in which deterioration of charge-discharge cycle characteristics is suppressed, to suppress generation of defects caused by expansion and contraction of an active material in a negative electrode, or to prevent deterioration caused by deformation of a secondary battery. To prevent deterioration, a material that can be alloyed with lithium and fluidified easily is used for a negative electrode. To hold a negative electrode active material over a surface of a current collector, a covering layer that covers the negative electrode active material is provided. Furthermore, a portion where the current collector and the negative electrode active material are in contact with each other is alloyed. In other words, an alloy that is in contact with both the current collector and the negative electrode active material is provided in the negative electrode.