中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

125 records (took 0.021 seconds)

    NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM-ION SECONDARY BATTERY
    21.
    发明申请
    NEGATIVE ELECTRODE FOR LITHIUM-ION SECONDARY BATTERY, MANUFACTURING METHOD THEREOF, AND LITHIUM-ION SECONDARY BATTERY 审中-公开
    用于锂离子二次电池的负极，其制造方法和锂离子二次电池

    公开(公告)号：US20140099539A1

    公开(公告)日：2014-04-10

    申请号：US14043120

    申请日：2013-10-01

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Shunpei YAMAZAKI ,  Teppei OGUNI ,  Ryota TAJIMA

    IPC: H01M4/36 ,  C01B33/113 ,  H01M4/04 ,  C01B33/027

    CPC classification number: H01M4/366 ,  C01B33/027 ,  C01B33/113 ,  H01M4/0421 ,  H01M4/386 ,  H01M10/0525

    Abstract: To provide a lithium-ion secondary battery which has high charge and discharge capacity, is capable of being charged and discharged at high rate and has good cycle characteristics. A negative electrode includes a current collector and a negative electrode active material layer. The current collector includes a plurality of protrusion portions extending in the direction substantially perpendicular to the current collector and a base portion connected to the plurality of protrusion portions. The protrusion portions and the base portion are formed using the same material containing titanium. At least side surfaces of the protrusion portions are covered with the negative electrode active material layer. In the negative electrode active material layer, silicon layers and silicon oxide layers are alternately stacked between a plane where the protrusion portions are in contact with the negative electrode active material layer and a surface of the negative electrode active material layer.

    Abstract translation: 为了提供具有高充放电能力的锂离子二次电池，能够高速充放电且具有良好的循环特性。 负极包括集电体和负极活性物质层。 集电体包括沿与集电体大致垂直的方向延伸的多个突出部和与多个突出部连接的基部。 使用与钛相同的材料形成突出部和基部。 突起部的至少侧面被负极活性物质层覆盖。 在负极活性物质层中，硅层和氧化硅层交替层叠在突起部与负极活性物质层接触的面与负极活性物质层的表面之间。

    POWER STORAGE DEVICE AND VEHICLE
    22.
    发明申请
    POWER STORAGE DEVICE AND VEHICLE 有权

    公开(公告)号：US20240405308A1

    公开(公告)日：2024-12-05

    申请号：US18695496

    申请日：2022-09-20

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Yohei MOMMA ,  Tetsuya KAKEHATA ,  Tetsuji ISHITANI ,  Yuji IWAKI ,  Ryota TAJIMA ,  Shuhei YOSHITOMI

    IPC: H01M10/615 ,  B60L58/27 ,  H01M10/44 ,  H01M10/48 ,  H01M10/625 ,  H01M10/63 ,  H01M10/653 ,  H01M50/136 ,  H01M50/213

    Abstract: A power storage device that is less likely to be influenced by an ambient temperature is provided. The power storage device capable of being charged and discharged even in a low-temperature environment is provided. A first secondary battery capable of being charged and discharged even at low temperatures and a general second secondary battery are adjacent to each other in the power storage device. The power storage device having such a structure can use, as an internal heat source in a low-temperature environment, heat generated by charge and discharge of the secondary battery capable of being charged and discharged even at low temperatures. Specifically, the power storage device includes the first secondary battery and the second secondary battery adjacent to each other, the first secondary battery has flexibility, and a value of discharge capacity in discharge at −40° C. is higher than or equal to 50% of a value of discharge capacity in discharge at 25° C.

    CHARGING-CONTROL DEVICE AND ELECTRONIC DEVICE WITH SECONDARY BATTERY
    26.
    发明申请
    CHARGING-CONTROL DEVICE AND ELECTRONIC DEVICE WITH SECONDARY BATTERY 有权

    公开(公告)号：US20230132746A1

    公开(公告)日：2023-05-04

    申请号：US18089199

    申请日：2022-12-27

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Ryota TAJIMA ,  Toshiyuki ISA ,  Akihiro CHIDA

    IPC: H01M10/42 ,  G01R31/367 ,  B60L58/18 ,  H01M10/48

    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.

    ALL-SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREOF
    28.
    发明申请
    ALL-SOLID-STATE BATTERY AND MANUFACTURING METHOD THEREOF 有权

    公开(公告)号：US20220115661A1

    公开(公告)日：2022-04-14

    申请号：US17424296

    申请日：2020-01-14

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Ryota TAJIMA ,  Yumiko YONEDA ,  Yohei MOMMA ,  Shunpei YAMAZAKI

    IPC: H01M4/583 ,  H01M10/0562 ,  H01M10/0525 ,  H01M4/38

    Abstract: Use of silicon as a negative electrode active material particle causes a problem of expansion and contraction of the negative electrode active material particle due to charging and discharging. A negative electrode active material particle or a plurality of negative electrode active material particles are bound or fixed using a graphene compound to inhibit expansion and contraction of the negative electrode active material particle due to charging and discharging. In an all-solid-state secondary battery, an interface between a solid electrolyte and a negative electrode or an interface between the solid electrolyte and a positive electrode has the highest resistance. In order to reduce the interface resistance, at least the negative electrode active material particle is surrounded by a graphene compound to increase the conductivity. Alternatively, a positive electrode active material particle is surrounded by a graphene compound to increase the conductivity. Carrier ions, e.g., lithium ions, pass through a graphene compound, and thus the graphene compound does not hinder the transfer of lithium ions between the positive electrode and the negative electrode in charging or discharging.

    POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE
    29.
    发明申请
    POSITIVE ELECTRODE ACTIVE MATERIAL, SECONDARY BATTERY, ELECTRONIC DEVICE, AND VEHICLE 有权

    公开(公告)号：US20210391575A1

    公开(公告)日：2021-12-16

    申请号：US17290841

    申请日：2019-11-05

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Mayumi MIKAMI ,  Ryota TAJIMA

    IPC: H01M4/525 ,  H01M4/505 ,  H01M10/0525 ,  C01G51/00 ,  C01G53/00

    Abstract: A positive electrode active material, which has high capacity and excellent charge and discharge cycle performance, for a lithium-ion secondary battery is provided. The positive electrode active material contains lithium, cobalt, an element X, and fluorine, and includes a region represented by a layered rock-salt structure. The space group of the region is represented by R-3m. The element X is one or more selected from elements that have a property in which ΔE3 obtained by subtracting, from the stabilization energy in the case of substitution of the element at a lithium position in lithium cobalt oxide, the stabilization energy before the substitution is smaller than ΔE4 obtained by subtracting, from the stabilization energy in the case of substitution of the element at a cobalt position in lithium cobalt oxide, the stabilization energy before the substitution. ΔE3 and ΔE4 are calculated by the first-principles calculation.

Patent Agency Ranking