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    Pouch-shaped secondary battery including electrode lead using conductive polymer
    1.
    发明授权
    Pouch-shaped secondary battery including electrode lead using conductive polymer 有权

    公开(公告)号：US11063325B2

    公开(公告)日：2021-07-13

    申请号：US16334177

    申请日：2018-04-10

    申请人： LG Chem, Ltd.

    发明人： Jong Pil Park ,  Kyoung Ho Kim ,  Min Woo Lee

    IPC分类号： H01M50/531 ,  H01M10/052 ,  H01M10/04 ,  H01M50/172 ,  H01M50/183 ,  H01M50/543 ,  H01M50/557 ,  H01M50/578

    摘要： Disclosed herein is a pouch-shaped secondary battery including a pouch-shaped battery case surrounding an electrode assembly, a first electrode lead connected to the electrode assembly and extending to a joint of the battery case, a second electrode lead detachably connected to the first electrode lead and extending out of the battery case, a connection layer coupling the first electrode lead and the second electrode lead to each other, and a sealing layer coupling the battery case to the first electrode lead and the second electrode lead, wherein the first and second electrode leads are configured to be detached from one another in order to secure the safety of a pouch-shaped battery cell when the pouch-shaped battery cell swells due to gas generated in the pouch-shaped battery cell while the pouch-shaped battery cell is in an abnormal state or when the pouch-shaped battery cell is overcharged.

    Electrode active material having improved energy density and lithium secondary battery including the same
    7.
    发明授权
    Electrode active material having improved energy density and lithium secondary battery including the same 有权

    公开(公告)号：US10741841B2

    公开(公告)日：2020-08-11

    申请号：US14787992

    申请日：2014-07-16

    申请人： LG Chem, Ltd.

    发明人： Hoe Jin Hah ,  Kyoung Ho Kim ,  Il Hong Kim ,  Je Young Kim

    IPC分类号： H01M4/36 ,  H01M4/58 ,  H01M4/525 ,  H01M4/505 ,  H01M4/587 ,  H01M4/38 ,  H01M10/052 ,  H01M4/62 ,  H01M10/0525

    摘要： Disclosed are an electrode active material having improved energy density and a lithium secondary battery including the same. More particularly, provided is an electrode active material including a first electrode active material and a second electrode active material, each of the first electrode active material and the second electrode active material having a composition represented by Formula (1) below, a ratio of lithium to metals in the first electrode active material being 1.4 to 1.7, and a ratio of lithium to metals in the second electrode active material being 1.2 or more and less than 1.4: (1−x)LiM′O2−yAy−xLi2MnO3−y′Ay′  (1) wherein M′ is MnaMb; M is at least one selected from the group consisting of Ni, Ti, Co, Al, Cu, Fe, Mg, B, Cr, Zr, Zn and Period II transition metals; A is at least one selected from the group consisting of anions such as PO4, BO3, CO3, F and NO3; 0

    Pouch-shaped secondary battery including electrode lead having notch formed therein
    8.
    发明授权
    Pouch-shaped secondary battery including electrode lead having notch formed therein 有权

    公开(公告)号：US10340503B2

    公开(公告)日：2019-07-02

    申请号：US16029177

    申请日：2018-07-06

    申请人： LG Chem, Ltd.

    发明人： Jong Pil Park ,  Kyoung Ho Kim ,  Min Woo Lee

    IPC分类号： H01M2/34 ,  H01M2/02 ,  H01M2/30 ,  H01M2/26 ,  H01M2/06

    摘要： Disclosed herein is a pouch-shaped secondary battery including an electrode assembly in which a positive electrode and a negative electrode are stacked with a separator interposed, an electrode lead electrically connected to electrode tabs of the electrode assembly, a pouch-shaped battery case made of a laminate sheet including an outer coating layer, a metal layer, and an inner sealant layer, and a lead box disposed on a sealed portion of the battery case for receiving the electrode lead. In particular, the electrode lead includes a lower electrode lead, which is electrically connected to the electrode tabs, and an upper electrode lead, a portion of which is coupled to the lower electrode lead.