公开(公告)号：US20130236781A1

公开(公告)日：2013-09-12

申请号：US13769855

申请日：2013-02-19

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Teppei OGUNI ,  Ryota Tajima

IPC: H01M4/62

CPC classification number: H01M4/622 ,  H01M4/134 ,  H01M4/1395 ,  H01M4/386 ,  H01M4/661 ,  H01M4/70

Abstract: A negative electrode for a secondary battery and a secondary battery using the negative electrode are provided. The negative electrode includes a current collector, an active material layer, and a high molecular material layer. The current collector includes a plurality of protrusion portions extending substantially perpendicularly and a base portion which includes the same material as the plurality of protrusion portions and is connected to the plurality of protrusion portions. The protrusion portions and the active material layer covering the protrusion portions form negative electrode protrusion portions. The base portion and the active material layer covering the base portion form a negative electrode base portion. Part of side surfaces of the negative electrode protrusion portions including basal portions thereof and a top surface of the negative electrode base portion are covered with the high molecular material layer.

Abstract translation: 提供二次电池用负极和使用负极的二次电池。 负极包括集电体，活性物质层和高分子材料层。 集电体包括大致垂直延伸的多个突起部和与多个突起部相同的材料并与多个突起部连接的基部。 覆盖突起部的突出部和活性物质层形成负极突起部。 覆盖基部的基部和活性物质层形成负极基部。 负极突起部分的包括其基部和负极基部的顶表面的侧表面的一部分被高分子材料层覆盖。

公开(公告)号：US12176485B2

公开(公告)日：2024-12-24

申请号：US18395852

申请日：2023-12-26

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Yumiko Yoneda ,  Masaki Yamakaji ,  Ryota Tajima ,  Masaaki Hiroki

IPC: H01M10/0565 ,  H01M4/02 ,  H01M4/13 ,  H01M10/04 ,  H01M10/052 ,  H01M10/0585 ,  H01M50/119 ,  H01M50/121 ,  H01M50/122 ,  H01M50/124

Abstract: A gel electrolyte and a separator are provided between the positive electrode current collector and the negative electrode current collector. The plurality of positive electrode current collectors and the plurality of negative electrode current collectors are stacked such that surfaces of negative electrodes with which active material layers are not coated or surfaces of positive electrodes with which active material layers are not coated are in contact with each other.

公开(公告)号：US11990778B2

公开(公告)日：2024-05-21

申请号：US17258957

申请日：2019-06-27

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Takayuki Ikeda ,  Munehiro Kozuma ,  Takanori Matsuzaki ,  Ryota Tajima ,  Shunpei Yamazaki ,  Yuki Okamoto

IPC: H02J7/00 ,  H01M10/42

CPC classification number: H02J7/0031 ,  H01M10/4235 ,  H02J7/0036

Abstract: Safety is secured in such a manner that an anomaly of a secondary battery is detected with a protection circuit, for example, a phenomenon that lowers the safety of a secondary battery, particularly a micro short circuit, is detected early, and users are warned or the use of the secondary battery is stopped. A secondary battery protection circuit includes a first memory circuit electrically connected to a secondary battery, a comparison circuit electrically connected to the first memory circuit, a second memory circuit electrically connected to the comparison circuit, and a power-off switch electrically connected to the second memory circuit. The power-off switch is electrically connected to the secondary battery, and the first memory circuit includes a first transistor including an oxide semiconductor and retains a voltage value of the secondary battery in an analog manner.

公开(公告)号：US11951769B2

公开(公告)日：2024-04-09

申请号：US16071169

申请日：2017-01-18

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kensuke Yoshizumi ,  Ryota Tajima

IPC: B60K1/02 ,  B60B21/12 ,  B60K1/04 ,  B60K6/26 ,  B60K6/28 ,  B60L50/64 ,  B60L53/60 ,  H01M10/42 ,  H01M50/213 ,  H01M50/249 ,  H02J7/00

CPC classification number: B60B21/12 ,  B60K1/02 ,  B60K1/04 ,  B60K6/26 ,  B60K6/28 ,  B60L50/64 ,  B60L53/60 ,  H01M10/4257 ,  H01M50/213 ,  H01M50/249 ,  H02J7/0013 ,  B60K2001/045 ,  B60Y2200/91 ,  B60Y2200/92 ,  H01M2010/4271 ,  H01M2220/20

Abstract: Space-saving in an automobile or the like provided with a battery is achieved. Design flexibility of an automobile or the like can be improved. An electric power control method or an electric power control system capable of utilizing electric power efficiently is provided. It is an electric power control system of an automobile including a car body, a first battery, a second battery, and a control unit. The control unit obtains states of charge of the first battery and the second battery, determines whether or not a difference between remaining capacities of the first battery and the second battery exceeds a predetermined value, and controls transmission of electric power between the first battery and the second battery, in the case where the difference in the remaining capacities exceeds the predetermined value, to be made such that the remaining capacities are close to each other.

公开(公告)号：US11714385B2

公开(公告)日：2023-08-01

申请号：US16926891

申请日：2020-07-13

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota Tajima ,  Kensuke Yoshizumi

IPC: H02J7/00 ,  H01M2/10 ,  G04G17/06 ,  G04B37/14 ,  A44C5/00 ,  A44C5/14 ,  G04G19/00 ,  H01M2/20 ,  H01M50/202 ,  H01M50/569

CPC classification number: G04B37/1493 ,  A44C5/0053 ,  A44C5/14 ,  G04G17/06 ,  G04G19/00 ,  H01M50/202 ,  H01M50/569 ,  H02J7/0045 ,  H01M2220/30

Abstract: A device capable of being used for a long time is achieved. A power supply, a connection method of a power supply, or a connecting member, for easy attachment and detachment and non-detachment when in use, is provided. A power supply, a connection method of a power supply, or a connecting member for easy replacement is provided. A highly designed power supply is provided. Power from a battery is supplied to an electronic device through a connecting member including a pipe, a spring, and a pair of pivots. The pair of pivots are electrically insulated from each other, and electrically connected to any one of a pair of electrodes of the battery. The electronic device into which the pair of pivots are inserted includes a pair of bearings capable of receiving power.

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.

公开(公告)号：US11594770B2

公开(公告)日：2023-02-28

申请号：US16603487

申请日：2018-04-20

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Kazutaka Kuriki ,  Ryota Tajima ,  Kouhei Toyotaka ,  Hideaki Shishido ,  Toshiyuki Isa

IPC: H01M10/48 ,  G06N3/04 ,  G06N3/063 ,  H01M10/44 ,  H02J7/00

Abstract: A power storage system with excellent characteristics is provided. A power storage system with a high degree of safety is provided. A power storage system with less deterioration is provided. A storage battery with excellent characteristics is provided. The power storage system includes a neural network and a storage battery. The neural network includes an input layer, an output layer, and one or more hidden layers between the input layer and the output layer. The predetermined hidden layer is connected to the previous hidden layer or the previous input layer by a predetermined weight coefficient, and connected to the next hidden layer or the next output layer by a predetermined weight coefficient. In the storage battery, voltage and time at which the voltage is obtained are measured as one of sets of data. The sets of data measured at different times are input to the input layer and the operational condition of the storage battery is changed in accordance with a signal output from the output layer.

公开(公告)号：US11563238B2

公开(公告)日：2023-01-24

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 ,  G01R31/367 ,  B60L58/18

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：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.

公开(公告)号：US11480621B2

公开(公告)日：2022-10-25

申请号：US16753839

申请日：2018-10-25

Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

Inventor： Ryota Tajima ,  Toshiyuki Isa ,  Akihiro Chida

IPC: G01R31/387 ,  H02J9/06

Abstract: It is difficult to know the remaining amount and the degradation state of a power storage device, and it is also difficult to estimate how long the power storage device can be used. Data obtained through midway discharge and mid-to-full charge is used as the learning data to calculate the degradation state and the capacity. In other words, the learning data includes both a discharge curve of midway discharge and a charge curve of mid-to-full charge, and neural network processing is performed with the use of the learned data.