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    POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND POWER CONSUMING DEVICE
    3.
    发明公开
    POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK, AND POWER CONSUMING DEVICE 审中-实审

    公开(公告)号：EP4421889A1

    公开(公告)日：2024-08-28

    申请号：EP22918419.7

    申请日：2022-12-22

    申请人： Contemporary Amperex Technology Co., Limited

    发明人： LIN, Jianghui ,  ZHAO, Yanjie ,  LI, Xing ,  JIN, Haizu

    IPC分类号： H01M4/02 ,  H01M4/136 ,  H01M4/1397 ,  H01M10/05

    CPC分类号： Y02E60/10 ,  H01M4/02 ,  H01M10/05 ,  H01M4/136 ,  H01M4/1397

    摘要： This application provides a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric apparatus. The positive electrode plate includes a current collector and an electrode membrane formed on at least one surface of the current collector. The electrode membrane includes a first positive electrode active substance layer and a second positive electrode active substance layer, and the first positive electrode active substance layer is located between the current collector and the second positive electrode active substance layer. A first positive electrode active substance material in the first positive electrode active substance layer contains hollow particles, and a second positive electrode active substance material in the second positive electrode active substance layer contains solid particles. This application can increase the compacted density of the positive electrode plate, so as to increase the energy density of a battery cell without affecting the long-term cycling performance of the battery cell.