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    ELECTROLYTE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND POWER CONSUMING DEVICE
    1.
    发明公开
    ELECTROLYTE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND POWER CONSUMING DEVICE 审中-公开

    公开(公告)号：US20230163357A1

    公开(公告)日：2023-05-25

    申请号：US18145541

    申请日：2022-12-22

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Jie GUO ,  Changlong HAN ,  Bin JIANG ,  Zeli WU

    IPC: H01M10/0567 ,  H01M10/0569

    CPC classification number: H01M10/0567 ,  H01M10/0569 ,  H01M2300/004

    Abstract: An electrolyte for a secondary battery includes a solvent, a lithium salt, and a film-forming additive. A content of the film-forming additive is 0.1%-10% by mass of a total mass of the electrolyte, and the content of the film-forming additive satisfies:




    0.1
     
    ∗
     


    10


    -
    2


     
    ≤
     


    A
     
    ∗
     
    B


    M
     
    ∗
     


    C
     
    +
     
    N




     
    ≤
     
    3
     
    ∗


    10


    -2






    . A is a mass percentage of the film-forming additive in the total mass of the electrolyte. B is an electrolyte retention coefficient of the secondary battery, in g/Ah. M is a mass of a positive electrode active material required per unit capacity of the secondary battery, in g/Ah. N is a mass percentage of nickel in the positive electrode active material contained in the secondary battery. and C is a mass percentage of Co in the positive electrode active material contained in the secondary battery.

    SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE
    2.
    发明申请
    SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE 有权

    公开(公告)号：US20240372158A1

    公开(公告)日：2024-11-07

    申请号：US18773031

    申请日：2024-07-15

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Huiling CHEN ,  Changlong HAN ,  Zeli WU ,  Jie GUO ,  Bin JIANG ,  Lei HUANG ,  Cuiping ZHANG

    IPC: H01M10/42 ,  H01M10/056

    Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The secondary battery includes a positive electrode plate including a positive electrode film layer, a negative electrode plate including a negative electrode film layer, an electrolytic solution, and a solid electrolyte; the solid electrolyte is disposed on a surface of the positive and/or negative electrode film layer and includes a polymer matrix and a first additive, and the first additive is configured to form an interface film on the surface of the positive and/or negative electrode film layer, where a mass percentage of the polymer matrix relative to a total mass of the solid electrolyte is denoted as A %; and a mass percentage of the first additive relative to the total mass of the solid electrolyte is denoted as B %, and the secondary battery satisfies 0.1≤B/A≤19.

    SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRONIC DEVICE
    3.
    发明申请
    SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRONIC DEVICE 有权

    公开(公告)号：US20240372147A1

    公开(公告)日：2024-11-07

    申请号：US18770229

    申请日：2024-07-11

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Huiling CHEN ,  Zeli WU ,  Changlong HAN ,  Jie GUO ,  Cuiping ZHANG ,  Lei HUANG ,  Wenhao LIU

    IPC: H01M10/0568 ,  H01M10/0525 ,  H01M10/0567 ,  H01M10/42

    Abstract: A secondary battery, a battery module, a battery pack, and an electrical device are disclosed. The secondary battery includes a positive electrode plate, a negative electrode plate and an electrolytic solution, the negative electrode plate including a negative electrode film layer containing a negative electrode active material; and the electrolytic solution including a boron-containing lithium salt, the boron-containing lithium salt being configured to form a solid electrolyte interface film on the surface of the negative electrode active material, wherein a discharge capacity of the secondary battery is denoted as A in Ah, a mass of the electrolytic solution is denoted as B in g, a mass percentage of the boron-containing lithium salt relative to a total mass of the electrolytic solution is denoted as C %; and the secondary battery satisfies: 1≤B/A≤5, 5×10−6≤B×C %/A≤0.25.

    SECONDARY BATTERY AND DEVICE COMPRISING THE SAME
    8.
    发明申请
    SECONDARY BATTERY AND DEVICE COMPRISING THE SAME 有权

    公开(公告)号：US20220037697A1

    公开(公告)日：2022-02-03

    申请号：US17506142

    申请日：2021-10-20

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Zeli WU ,  Changlong HAN ,  Chenghua FU

    IPC: H01M10/0567 ,  H01M10/0569 ,  H01M4/38 ,  H01M4/505 ,  H01M4/525 ,  C07D307/60 ,  C07D309/32 ,  C07D313/04 ,  C07F9/09

    Abstract: This application provides a secondary battery and a device comprising the same. The secondary battery includes a negative electrode plate and an electrolyte. The negative electrode plate includes a negative electrode active material. The electrolyte includes an electrolyte salt, an organic solvent, and an additive. The negative electrode active material includes a silicon-based material. The organic solvent includes ethylene carbonate (EC) and diethyl carbonate (DEC). A mass ratio of EC in the organic solvent is less than or equal to 20%, and a mass ratio of DEC in the organic solvent is less than or equal to 20%. The additive includes an additive A and an additive B. The additive A is selected from one or more of compounds represented by Formula 1 or Formula 2, and the additive B is selected from one or more of compounds represented by Formula 3, as described in the application.

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