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    SEPARATOR AND BATTERY COMPRISING SAME
    6.
    发明公开
    SEPARATOR AND BATTERY COMPRISING SAME 审中-实审

    公开(公告)号：EP4354630A1

    公开(公告)日：2024-04-17

    申请号：EP22885984.9

    申请日：2022-10-25

    申请人： Zhuhai CosMX Battery Co., Ltd.

    发明人： MU, Yingdi ,  ZHANG, Zulai ,  WANG, Hai ,  LI, Suli

    IPC分类号： H01M50/457 ,  H01M50/46 ,  H01M50/451 ,  H01M50/434 ,  H01M10/0525

    CPC分类号： Y02E60/10 ,  H01M50/434 ,  H01M50/457 ,  H01M50/451 ,  H01M10/0525 ,  H01M50/46

    摘要： The present application provides a separator and a battery including the separator. The separator includes a substrate, heat-resistant layers, and an adhesive layer, the heat-resistant layers are disposed on two opposite surfaces of the substrate, and the adhesive layer is disposed on the heat-resistant layer; and an adhesive force between the adhesive layer and negative electrode is A, a peel force between a heat-resistant layer and the substrate is B, and a ratio of A to B (A/B) is greater than 1. In the present application, heat-resistant layers of a separator are bonded to surfaces of positive electrode and negative electrode, so that it is difficult for the positive electrode and the negative electrode to be shorted at a high temperature, thereby improving safety performance of a battery. In addition, in the present application, an ethyl propionate solvent is added to a non-aqueous electrolyte solution, so that low-temperature performance of a battery cell can be further considered. In the present application, based on a synergistic effect between a separator and an electrolyte solution, for a battery obtained through preparation, safety performance of the cell is effectively improved, and a low-temperature performance of the cell is considered.