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    Positive electrode for secondary battery and lithium secondary battery including the same
    12.
    发明授权
    Positive electrode for secondary battery and lithium secondary battery including the same 有权

    公开(公告)号：US11145860B2

    公开(公告)日：2021-10-12

    申请号：US16343576

    申请日：2018-07-16

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Lee ,  Jung Seok Choi ,  Kyung Min Kim ,  Song Taek Oh

    IPC分类号： H01M4/36 ,  H01M4/505 ,  H01M4/525 ,  H01M4/58 ,  H01M4/62 ,  H01M10/052 ,  H01M4/485 ,  H01M4/13 ,  H01M10/42 ,  H01M4/02

    摘要： The present invention relates to a positive electrode for a secondary battery to improve stability during overcharge, and a lithium secondary battery including the same, and particularly, to a positive electrode for a secondary battery including a positive electrode active material layer formed on a positive electrode collector, wherein the positive electrode active material layer has a double-layer structure which includes a first positive electrode active material layer formed on the positive electrode collector and a second positive electrode active material layer formed on the first positive electrode active material layer, the first positive electrode active material layer includes a first positive electrode active material, a conductive agent, and a gas generating agent generating gas during overcharge, and the second positive electrode active material layer includes a second positive electrode active material, and a lithium secondary battery including the same.

    Pouch-Type Secondary Battery and Pouch for Secondary Battery
    13.
    发明申请
    Pouch-Type Secondary Battery and Pouch for Secondary Battery 有权

    公开(公告)号：US20210083233A1

    公开(公告)日：2021-03-18

    申请号：US16755796

    申请日：2019-07-02

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Kim ,  Bum Young Jung

    IPC分类号： H01M2/02 ,  B32B15/04 ,  H01M2/26 ,  H01M2/30

    摘要： A pouch-type secondary battery includes: an electrode assembly in which a positive electrode, a separator, and a negative electrode are laminated; and a pouch configured to accommodate the electrode assembly, wherein the pouch includes: a surface protection layer made of a first polymer and formed at an outermost layer; a sealant layer made of a second polymer and formed at an innermost layer; a gas barrier layer made of a first metal and laminated between the surface protection layer and the sealant layer; and a metal foil layer made of a second metal, laminated between the surface protection layer and the sealant layer, and connected to the negative electrode of the electrode assembly.

    RECHARGEABLE BATTERY
    14.
    发明申请
    RECHARGEABLE BATTERY 审中-公开

    公开(公告)号：US20180083305A1

    公开(公告)日：2018-03-22

    申请号：US15711584

    申请日：2017-09-21

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Kim ,  Joo Hwan Sung

    IPC分类号： H01M10/04 ,  H01M2/10

    CPC分类号： H01M10/0468 ,  H01M2/1094 ,  H01M10/0431 ,  H01M10/045 ,  H01M2220/30

    摘要： A rechargeable battery comprises an electrode assembly having an electrode and a separator are alternately stacked and wound, a fixing tape attached to an exterior surface of the electrode assembly to prevent the electrode assembly from being unwound, and a battery case that receives the electrode assembly and the fixing tape therein. The fixing tape comprises a material that is expanded when an electrolyte is impregnated and absorbs an impact in the expanded state to buffer an impact applied to the electrode assembly.

    Secondary battery
    18.
    发明授权
    Secondary battery 有权

    公开(公告)号：US11128015B2

    公开(公告)日：2021-09-21

    申请号：US16637127

    申请日：2018-08-30

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Kim ,  Song Taek Oh ,  Jung Seok Choi

    IPC分类号： H01M2/16 ,  H01M50/46 ,  H01M10/44

    摘要： The present invention relates to a secondary battery. The secondary battery according to the present invention comprises an electrode assembly in which a positive electrode, a separator, and a negative electrode are alternately combined to be stacked; and a pouch that accommodates the electrode assembly therein. The separator comprises a first separator disposed between the positive electrode and the negative electrode and having a through-hole penetrated in a direction that faces the positive electrode and the negative electrode, and a second separator covering the through-hole of the first separator and having an end connected to the pouch. When an internal gas is generated due to overcharging, the pouch is expanded to allow the second separator to move to open the through-hole of the first separator to cause the positive electrode and the negative electrode to contact each other via the through-hole.

    Positive Electrode for Secondary Battery and Lithium Secondary Battery Including the Same
    19.
    发明申请
    Positive Electrode for Secondary Battery and Lithium Secondary Battery Including the Same 审中-公开

    公开(公告)号：US20200295362A1

    公开(公告)日：2020-09-17

    申请号：US16475472

    申请日：2018-07-16

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Lee ,  Jung Seok Choi ,  Kyung Min Kim ,  Song Taek Oh

    IPC分类号： H01M4/505 ,  H01M10/0525 ,  H01M4/525 ,  H01M4/485 ,  H01M4/04 ,  H01M4/62 ,  H01M4/36

    摘要： The present invention relates to a positive electrode for a secondary battery to improve stability during overcharge, and a lithium secondary battery including the same, and particularly, to a positive electrode for a secondary battery including a positive electrode active material layer formed on a positive electrode collector, wherein the positive electrode active material layer has a double-layer structure which includes a first positive electrode active material layer formed on the positive electrode collector and a second positive electrode active material layer formed on the first positive electrode active material layer, the first positive electrode active material layer includes a first positive electrode active material, a conductive agent, and a volume expansion resin in which volume expansion occurs at a high temperature during overcharge, and the second positive electrode active material layer includes a second positive electrode active material, and a lithium secondary battery including the same.

    Positive Electrode for Secondary Battery and Lithium Secondary Battery Including the Same
    20.
    发明申请
    Positive Electrode for Secondary Battery and Lithium Secondary Battery Including the Same 审中-公开

    公开(公告)号：US20190267621A1

    公开(公告)日：2019-08-29

    申请号：US16343576

    申请日：2018-07-16

    申请人： LG Chem, Ltd.

    发明人： Kyung Min Lee ,  Jung Seok Choi ,  Kyung Min Kim ,  Song Taek Oh

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

    摘要： The present invention relates to a positive electrode for a secondary battery to improve stability during overcharge, and a lithium secondary battery including the same, and particularly, to a positive electrode for a secondary battery including a positive electrode active material layer formed on a positive electrode collector, wherein the positive electrode active material layer has a double-layer structure which includes a first positive electrode active material layer formed on the positive electrode collector and a second positive electrode active material layer formed on the first positive electrode active material layer, the first positive electrode active material layer includes a first positive electrode active material, a conductive agent, and a gas generating agent generating gas during overcharge, and the second positive electrode active material layer includes a second positive electrode active material, and a lithium secondary battery including the same.