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    Secondary Battery Electrode Plate and Preparation Method Therefor, and Secondary Battery
    2.
    发明申请
    Secondary Battery Electrode Plate and Preparation Method Therefor, and Secondary Battery 有权

    公开(公告)号：US20250105241A1

    公开(公告)日：2025-03-27

    申请号：US18971766

    申请日：2024-12-06

    Applicant: BYD COMPANY LIMITED

    Inventor： Huajun Sun ,  Xiaotao Yuan ,  Kefeng He ,  Zhan Xu ,  Liping Ge

    IPC: H01M4/04 ,  H01M4/02 ,  H01M4/70 ,  H01M10/0525

    Abstract: A secondary battery electrode plate and a preparation method therefor, and a secondary battery are provided. The secondary battery electrode plate includes a current collector and a first active material layer. The first active material layer is located on a surface of the current collector and contains first active substance particles The first active substance particles have an equivalent sphericity X1 as represented by formula X1=3/(S1R1ρ1), where 0.05≤X1≤0.8; R1 is a median radius of the first active substance particles in a unit of μm; S1 is a specific surface area of the first active substance particles in a unit of m2/g; and ρ1 is true density of the first active substance particles in a unit of g/cm3.

    Battery, battery module, battery pack and electric vehicle
    3.
    发明授权
    Battery, battery module, battery pack and electric vehicle 有权

    公开(公告)号：US11258129B2

    公开(公告)日：2022-02-22

    申请号：US17019852

    申请日：2020-09-14

    Applicant: BYD COMPANY LIMITED

    Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

    IPC: H01M2/10 ,  H01M2/36 ,  B60L50/64 ,  H01M50/20 ,  H01M50/60

    Abstract: A battery includes a case and a battery core assembly disposed in the case, the battery core assembly includes a plurality of battery core groups and an receiving space holding the plurality of battery core groups, the battery core groups are connected in series, and the battery core group includes at least one battery core; a separator plate is disposed between at least two adjacent battery core groups, the separator plate divides the receiving space into a plurality of receiving cavities, each of the receiving cavities holds one or more battery core groups , and a cavity wall of the receiving cavity comprised by a connection of the separator plate and a separation membrane; and the battery further includes a liquid injection channel and the liquid injection channel in a sealed state, the liquid injection channel is disposed on at least one of the separation membranes and the separator plates.

    Lithium-ion battery, battery module, battery pack, and automobile
    4.
    发明授权
    Lithium-ion battery, battery module, battery pack, and automobile 有权

    公开(公告)号：US10790544B1

    公开(公告)日：2020-09-29

    申请号：US16707831

    申请日：2019-12-09

    Applicant: BYD COMPANY LIMITED

    Inventor： Chuanfu Wang ,  Long He ,  Huajun Sun ,  Jianhua Zhu ,  Zhipei Lu ,  Yan Zhu ,  Shichao Hu

    IPC: H01M10/42 ,  H01M10/0525 ,  H01M10/0585 ,  H01M2/10 ,  H01M2/36

    Abstract: The present invention provides a lithium-ion battery, including: a housing and a separator located inside the housing, where the separator separates internal space of the housing into a plurality of accommodation cavities, battery core sets are disposed inside the accommodation cavities, the battery core sets each include at least one pole shank, and the battery core sets are connected in series; and at least one separator is provided with a liquid injection hole, and the liquid injection hole is used to connect two adjacent accommodation cavities on two sides of the separator; and a block mechanism, where the block mechanism is located inside the housing, the block mechanism enables the liquid injection hole to be in a predetermined state, and the predetermined state includes an open state and a closed state. The battery provided in the present invention ensures isolation and safety of each battery core set while facilitating liquid injection.

    END COVER ASSEMBLY FOR BATTERY AND BATTERY CONTAINING THE SAME
    5.
    发明申请
    END COVER ASSEMBLY FOR BATTERY AND BATTERY CONTAINING THE SAME 审中-公开
    具有电池和电池的端盖组件

    公开(公告)号：US20130143078A1

    公开(公告)日：2013-06-06

    申请号：US13757370

    申请日：2013-02-01

    Applicant: Shenzhen BYD Auto R&D Company Limited and BYD Company Limited

    Inventor： Guoyong Che ,  Huajun Sun

    IPC: H01M2/34 ,  H01M2/12

    CPC classification number: H01M2/348 ,  H01M2/0413 ,  H01M2/1241 ,  H01M2200/00 ,  H01M2200/10 ,  H01M2200/106

    Abstract: An end cover assembly for a battery with a core comprises a contact terminal, a conductive element, and a thermistor. The conductive element is in electrical communication with the core of the battery. The thermistor is disposed between the terminal and the conductive element. The thermistor electrically connects the terminal and the conductive element when the temperature of the battery is below a predetermined temperature. The thermistor electrically disconnects the terminal and the conductive element when the temperature of the battery is above the predetermined temperature.

    Abstract translation: 具有芯的电池的端盖组件包括接触端子，导电元件和热敏电阻。 导电元件与电池的芯体电连通。 热敏电阻设置在端子和导电元件之间。 当电池的温度低于预定温度时，热敏电阻将端子和导电元件电连接。 当电池的温度高于预定温度时，热敏电阻将端子和导电元件电断开。

    Battery pack and electric vehicle
    10.
    发明授权
    Battery pack and electric vehicle 有权

    公开(公告)号：US12230821B2

    公开(公告)日：2025-02-18

    申请号：US17777938

    申请日：2020-10-22

    Applicant: BYD COMPANY LIMITED

    Inventor： Long He ,  Huajun Sun ,  Yan Zhu ,  Liangwen Tan ,  Long Wan

    IPC: H01M50/209 ,  B60L50/64 ,  H01M10/613 ,  H01M10/625 ,  H01M10/6555 ,  H01M50/218 ,  H01M50/264 ,  H01M50/291

    Abstract: A battery pack includes a housing having a bottom surface and a top surface and a battery assembly in the housing. The battery assembly includes structural reinforcing members and cell sequences formed by connecting multiple cells. An outer surface of the cell includes a bottom surface, a top surface, first and second lateral surfaces. The bottom surface of the cell faces the bottom surface of the housing, and the top surface of the cell faces the top surface of the housing. The first lateral surface has a largest area. The multiple cells are arranged with second lateral surfaces thereof facing each other to form a cell sequence, and the structural reinforcing members are fixedly bonded with first lateral surfaces of cells in the cell sequence. The battery assembly is supported in the housing by the bottom surface of the housing.

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