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    Electrochemical Device and Power Consuming Device Comprising the Electrochemical Device
    4.
    发明申请
    Electrochemical Device and Power Consuming Device Comprising the Electrochemical Device 有权

    公开(公告)号：US20230125949A1

    公开(公告)日：2023-04-27

    申请号：US18058760

    申请日：2022-11-24

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Peipei CHEN ,  Limei ZHANG ,  Chang PENG ,  Hailin ZOU

    IPC: H01M4/525 ,  H01M4/04 ,  H01M4/485 ,  H01M4/505 ,  H01M10/0568 ,  H01M10/0567

    Abstract: An electrochemical device includes a positive electrode plate and an electrolyte solution. The positive electrode plate includes a positive electrode current collector and a positive electrode active material layer provided on at least one surface of the positive electrode current collector. The positive electrode active material layer contains a positive electrode lithium supplement including one or more of Li2M1O2, Li2M2O3, Li3M3O4, Li5M4O4, and Li6M5O4. M1 includes one or more of Ni, Co, Fe, Mn, Zn, Mg, Ca, and Cu. M2 includes one or more of Mn, Sn, Mo, Ru, and Ir. M3 includes one or more of V, Nb, Cr, and Mo. M4 includes one or more of Fe, Cr, V, and Mo. M5 includes one or more of Co, V, Cr, and Mo. The electrolyte solution contains a lithium salt. A molarity A of the lithium salt satisfies 1.5 mol/L≤A≤4 mol/L.

    LITHIUM ION BATTERY, BATTERY MODULE, BATTERY PACK AND POWER CONSUMING DEVICE
    7.
    发明申请
    LITHIUM ION BATTERY, BATTERY MODULE, BATTERY PACK AND POWER CONSUMING DEVICE 有权

    公开(公告)号：US20230128934A1

    公开(公告)日：2023-04-27

    申请号：US18086217

    申请日：2022-12-21

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Hailin ZOU ,  Peipei CHEN ,  Chang PENG ,  Chengdu LIANG

    IPC: H01M10/0567 ,  H01M10/0525 ,  H01M10/0569

    Abstract: The present application provides a lithium ion battery, comprising an electrode assembly and an electrolyte comprising a fluorosulfonate and/or difluorophosphate substance. The lithium ion battery has a gas generation area coefficient during formation, defined as α, with α=M×S/200; wherein M is in the range of 5 mg/cm2-100 mg/cm2; S is the specific surface area of the negative electrode material on the negative electrode current collector and is in the range of 0.1 m2/g-10 m2/g; the lithium ion battery has a gas venting path coefficient defined as β, with β=100/L, wherein L is in the range of L≥50 mm; the mass percentage content w % of the fluorosulfonate and/or difluorophosphate substance in the electrolyte and α and β meet the equation 0.01≤w×β/α≤20.

    LITHIUM-ION BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE
    9.
    发明申请
    LITHIUM-ION BATTERY, BATTERY MODULE, BATTERY PACK, AND ELECTRICAL DEVICE 有权

    公开(公告)号：US20230084934A1

    公开(公告)日：2023-03-16

    申请号：US17953327

    申请日：2022-09-27

    Applicant: CONTEMPORARY AMPEREX TECHNOLOGY CO., LIMITED

    Inventor： Chang PENG ,  Peipei CHEN ,  Hailin ZOU ,  Liye LI

    IPC: H01M4/36 ,  H01M10/0525 ,  H01M4/62 ,  H01M10/0567

    Abstract: This application provides a lithium-ion battery, including: an electrode assembly and an electrolytic solution.
    The lithium-ion battery may satisfy the following condition: 0.6≤α≤0.9, and 4≤w×α/β1≤25, where, α=La/Lc, La is an arc length of a convex surface of the negative current collector corresponding to a concave surface of an innermost first circle of positive electrode in a jelly-roll structure of the electrode assembly, Lc is an arc length of a concave surface of an innermost first circle of positive current collector in the jelly-roll structure of the electrode assembly, and La and Lc are measured in mm; w is a percent of the first lithium salt LixR1(SO2N)xSO2R2 by mass in the electrolytic solution; and β1 is a thickness of the metallic conductive layer in the positive current collector, measured in μM.

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