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    SECONDARY BATTERY
    71.
    发明申请
    SECONDARY BATTERY 审中-公开
    二次电池

    公开(公告)号：US20150086868A1

    公开(公告)日：2015-03-26

    申请号：US14494898

    申请日：2014-09-24

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

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

    IPC: H01M4/134 ,  H01M4/36 ,  H01M4/62

    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.

    Abstract translation: 本发明的一个实施方案的目的是提供一种其中抑制充放电循环特性恶化的二次电池，以抑制由负极中的活性物质的膨胀和收缩引起的缺陷的产生，或防止劣化 由二次电池的变形造成的。 为了防止劣化，可以使用能够与锂合金化并容易流动的材料用于负极。 为了将负极活性物质保持在集电体的表面上，设置覆盖负极活性物质的覆盖层。 此外，集电体和负极活性物质彼此接触的部分合金化。 换句话说，在负极中设置与集电体和负极活性物质两者接触的合金。

    SEMICONDUCTOR DEVICE
    74.
    发明申请
    SEMICONDUCTOR DEVICE 有权

    公开(公告)号：US20240396105A1

    公开(公告)日：2024-11-28

    申请号：US18676728

    申请日：2024-05-29

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Ryota TAJIMA ,  Kei TAKAHASHI ,  Hiroki INOUE ,  Munehiro KOZUMA ,  Takahiro FUKUTOME

    IPC: H01M10/44 ,  G01R31/367 ,  H01M10/48 ,  H02J7/00

    Abstract: A semiconductor device that inhibits deterioration of a secondary battery is provided. The semiconductor device includes a secondary battery module and a first circuit. The secondary battery module includes a secondary battery and a sensor. The first circuit includes a variable resistor. The sensor has a function of measuring a temperature of the secondary battery. The first circuit has a function of judging the charge voltage of the secondary battery and outputting a first result; a function of judging the temperature of the secondary battery measured by the sensor and outputting a second result; a function of determining the magnitude of the variable resistor on the basis of the first result and the second result; a function of discharging the charge voltage through the variable resistor; and a function of stopping discharge when the charge voltage reaches a specified voltage.

    SOLID-STATE SECONDARY BATTERY
    78.
    发明申请
    SOLID-STATE SECONDARY BATTERY 有权

    公开(公告)号：US20220231285A1

    公开(公告)日：2022-07-21

    申请号：US17617188

    申请日：2020-06-01

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Kazutaka KURIKI ,  Ryota TAJIMA ,  Yumiko YONEDA

    IPC: H01M4/36 ,  H01M4/525

    Abstract: A solid-state secondary battery with high charge and discharge characteristics is provided. The solid-state secondary battery includes a first layer and a positive electrode active material layer over a substrate. The first layer and the positive electrode active material layer are in contact with each other; the first layer has conductivity; the first layer has a first crystal structure including first cations and first anions; the positive electrode active material layer has a second structure including second cations and second anions; and a value calculated by the following formula (1) is less than or equal to 0.1 when La denotes the minimum value of a distance between one of the first cations and another one of the first cations in the first crystal structure and Lb denotes the minimum value of a distance between one of the second cations and another one of the second cations.  La - Lb  L ⁢ a ( 1 )

    ELECTRONIC DEVICE WITH SECONDARY BATTERY
    79.
    发明申请
    ELECTRONIC DEVICE WITH SECONDARY BATTERY 有权

    公开(公告)号：US20220209280A1

    公开(公告)日：2022-06-30

    申请号：US17571846

    申请日：2022-01-10

    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.

    Inventor： Minoru TAKAHASHI ,  Ryota TAJIMA ,  Takuya MIWA ,  Yuugo GOTO

    IPC: H01M10/04 ,  H01M50/463

    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 that is durable even when force is externally applied thereto is provided. A cushioning material is provided in a region surrounded by an exterior body of a secondary battery, Specifically, a cushioning material is provided on the periphery of a current collector such that a sealing portion of an exterior body (film) is located outside the cushioning material.

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