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    Lifetime estimation device, lifetime estimation method, and abnormality detection method of secondary battery
    21.
    发明授权
    Lifetime estimation device, lifetime estimation method, and abnormality detection method of secondary battery 有权

    公开(公告)号：US11340306B2

    公开(公告)日：2022-05-24

    申请号：US16761289

    申请日：2018-11-07

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Toshiyuki Isa ,  Akihiro Chida ,  Ryota Tajima

    IPC: G01R31/392 ,  G01R31/36 ,  G01R31/367 ,  G01R31/374

    Abstract: An object is to predict a deterioration state of a secondary battery even in an environment where temperature and a charging voltage change. A lifetime estimation device of the secondary battery includes a measuring unit for measuring the capacity of the secondary battery in the full charging state; a temperature sensing unit for sensing the ambient temperature of the secondary battery; and a storage unit for storing a table of a proportional coefficient corresponding to temperature in advance, and a predicted deterioration line of the secondary battery is calculated with the use of a nonlinear regression equation approximated to a measured deterioration line obtained by the measuring unit. The lifetime estimation device may construct a lifetime estimation system with the use of a neural network.

    Power storage system, electronic device, vehicle, and estimation method
    22.
    发明授权
    Power storage system, electronic device, vehicle, and estimation method 有权

    公开(公告)号：US11205912B2

    公开(公告)日：2021-12-21

    申请号：US16627429

    申请日：2018-07-13

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Takeshi Osada ,  Akihiro Chida ,  Toshiyuki Isa ,  Kazutaka Kuriki

    IPC: H02J7/00 ,  G01R31/387 ,  G01R31/389 ,  G01R31/367 ,  B60L50/64 ,  B60L58/10 ,  G06N3/04

    Abstract: A power storage system having excellent characteristics is provided. A power storage system having high safety is provided. A power storage system with little degradation is provided. A storage battery having excellent characteristics is provided. A method of operating a power storage system including a storage battery, a first circuit having a function of measuring an impedance, and a neural network includes a first step of stopping charging or discharging of the storage battery, a second step of measuring an open circuit voltage of the storage battery, a third step of measuring an impedance of the storage battery, a fourth step of inputting the open circuit voltage and the impedance that are measured to the input layer, a fifth step of outputting a first signal from the output layer, a sixth step of changing a condition of charging or discharging of the storage battery in accordance with the first signal, and a seventh step of starting charging or discharging of the storage battery; the first signal corresponds to the estimated value of the discharge capacity of the storage battery.

    Display device, module, and electronic device
    23.
    发明授权
    Display device, module, and electronic device 有权

    公开(公告)号：US10325966B2

    公开(公告)日：2019-06-18

    申请号：US15743806

    申请日：2016-07-14

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Toshiyuki Isa

    IPC: H01L27/32 ,  H01L51/00 ,  G06F3/041 ,  H05B33/26 ,  G06F3/044

    Abstract: The display defects of a display device are reduced. The display quality of the display device is improved. The display device includes a display panel and a first conductive layer. The display panel includes a display element including a pair of electrodes. An electrode of the pair of electrodes which is closer to one surface of the display panel is supplied with a constant potential. A constant potential is supplied to the first conductive layer. The second conductive layer provided on the other surface of the display panel is in contact with the first conductive layer, whereby the second conductive layer is also supplied with the constant potential. The second conductive layer includes a portion not fixed to the first conductive layer.

    Display Device
    25.
    发明申请
    Display Device 有权
    显示设备

    公开(公告)号：US20140035456A1

    公开(公告)日：2014-02-06

    申请号：US13955568

    申请日：2013-07-31

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Toshiyuki Isa

    IPC: H05B33/02

    CPC classification number: H01L27/3248 ,  H01L27/3206 ,  H01L27/3209 ,  H01L27/3211 ,  H01L27/322 ,  H01L27/3246 ,  H01L29/7869 ,  H01L51/5215 ,  H01L51/5218 ,  H01L51/5234 ,  H01L51/5253 ,  H01L51/5265 ,  H01L51/5284 ,  H01L2251/5315 ,  H01L2251/558 ,  H05B33/02

    Abstract: To improve image quality of a full-color organic EL display panel. A partition has a stacked structure formed using different materials. A lower partition has a curved shape, and an upper partition has a flat top surface. An angle formed between a plane surface connecting a lower end of a side surface with an upper end of the side surface of the upper partition and the top surface of the upper partition is less than or equal to 90°. The height of the partition is controlled to be greater than or equal to 0.5 μm and less than or equal to 1.3 μm. With such a structure, a large color organic EL display panel achieves high-definition display.

    Abstract translation: 提高全彩有机EL显示面板的图像质量。 隔板具有使用不同材料形成的堆叠结构。 下隔板具有弯曲形状，上隔板具有平坦的顶表面。 在连接侧表面的下端的平面与上隔板的侧表面的上端和上隔板的上表面之间形成的角度小于或等于90°。 将分隔物的高度控制在大于或等于0.5μm且小于或等于1.3μm。 利用这种结构，大型彩色有机EL显示面板实现高清晰度显示。

    Neural network, power storage system, vehicle, and electronic device
    27.
    发明授权
    Neural network, power storage system, vehicle, and electronic device 有权

    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.

    Charging-control device and electronic device with secondary battery
    28.
    发明授权
    Charging-control device and electronic device with secondary battery 有权

    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.

    Power feeding device, electronic device, and operation method of power feeding device
    30.
    发明授权
    Power feeding device, electronic device, and operation method of power feeding device 有权

    公开(公告)号：US11431199B2

    公开(公告)日：2022-08-30

    申请号：US16753872

    申请日：2018-10-24

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Koji Kusunoki ,  Toshiyuki Isa ,  Akihiro Chida ,  Kouhei Toyotaka ,  Ryota Tajima

    IPC: H02J7/00 ,  H02J50/10 ,  H02J50/40 ,  H02J7/04 ,  H01F27/34

    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 batten under the determined charge condition.

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