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    Electrode assembly and method for manufacturing the same
    1.
    发明授权
    Electrode assembly and method for manufacturing the same 有权

    公开(公告)号：US11038242B2

    公开(公告)日：2021-06-15

    申请号：US16678462

    申请日：2019-11-08

    申请人： LG Chem, Ltd.

    发明人： Sang Kyun Lee ,  Cha Hun Ku ,  Sang Hun Kim ,  Tae Kyu Kim ,  Min Cheol Choi

    IPC分类号： H01M50/46 ,  H01M10/04 ,  H01M50/403

    摘要： The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and first and second electrode sheets respectively adhering to both sides of the first separator sheet, wherein both the surfaces of the first separator sheet have adhesion different from each other, the first electrode sheet adheres to a first surface, which has relatively high adhesion, of both the surfaces, and the second electrode sheet adheres to a second surface, which has relatively low adhesion, of both the surfaces.

    METHOD OF MANUFACTURING POUCH-TYPE SECONDARY BATTERY
    2.
    发明申请
    METHOD OF MANUFACTURING POUCH-TYPE SECONDARY BATTERY 有权

    公开(公告)号：US20210098815A1

    公开(公告)日：2021-04-01

    申请号：US17050163

    申请日：2019-07-11

    申请人： LG Chem, Ltd.

    发明人： Yong Su Choi ,  Sang Hun Kim ,  Hyung Kyun Yu

    IPC分类号： H01M10/04 ,  B32B15/08 ,  H01M2/02

    摘要： A method of manufacturing a pouch-type secondary battery comprising the steps of: (a) preparing an electrode assembly having a separator interposed between a positive electrode and a negative electrode; (b) forming a receiving part for the electrode assembly in a case made of a laminate sheet; and (c) manufacturing a battery cell by receiving the electrode assembly in the receiving part and thermally fusing the case, wherein the laminate sheet comprises an outer resin layer, a metal barrier layer and an inner resin layer, the inner resin layer comprising polypropylene or polyethylene, and a crosslinking agent.

    Pouch-Type Secondary Battery Having Gas Discharge Means
    3.
    发明申请
    Pouch-Type Secondary Battery Having Gas Discharge Means 审中-公开

    公开(公告)号：US20200321577A1

    公开(公告)日：2020-10-08

    申请号：US16753442

    申请日：2019-01-24

    申请人： LG Chem, Ltd.

    发明人： Sang Hun Kim ,  Myung Hwan Kim ,  Yong Su Choi ,  Na Yoon Kim ,  Hyung Kyun Yu

    IPC分类号： H01M2/12 ,  H01M2/16 ,  H01M2/26 ,  H01M2/02 ,  H01M2/34

    摘要： Disclosed is a pouch-type secondary battery. More particularly, disclosed is a pouch-type secondary battery having a gas discharge means, the pouch-type secondary battery including an electrode assembly including a positive electrode, a negative electrode, and a separator interposed between the positive electrode and the negative electrode, a pouch-type case configured to wrap around the electrode assembly, a pair of insulative films disposed in a predetermined region of the edge of the pouch-type case so as to face each other, a positive electrode lead, one side of which is electrically connected to a positive electrode current collector of the electrode assembly and the other side of which protrudes out of the pouch-type case through between the insulative films, a negative electrode lead, one side of which is electrically connected to a negative electrode current collector of the electrode assembly and the other side of which protrudes out of the pouch-type case through between the insulative films, and a gas discharge member interposed between the insulative films, the gas discharge member being configured to discharge gas generated in the pouch-type case to the outside, whereby the swelling phenomenon and explosion of the battery are prevented.

    Venting Device and Method for Manufacturing the Same
    6.
    发明申请
    Venting Device and Method for Manufacturing the Same 审中-公开

    公开(公告)号：US20200259146A1

    公开(公告)日：2020-08-13

    申请号：US16637538

    申请日：2019-01-23

    申请人： LG Chem, Ltd.

    发明人： Na Yoon Kim ,  Yong Su Choi ,  Sang Hun Kim ,  Hyung Kyun Yu ,  Soo Ji Hwang

    IPC分类号： H01M2/12 ,  F16K17/04

    摘要： To solve the above problem, a venting device inserted into a sealing part of a pouch of a secondary battery according to the present invention includes: a housing inserted between confronting surfaces of the sealing part and sealed together with the sealing part; an element made of a metal and disposed in the housing and through which a passage is defined providing gas communication between an inside and an outside of the pouch; and a ball disposed at an outlet-side of the passage, the ball configured to open and close the passage, wherein, in the element, an edge of an inner circumference of a surface of the outlet-side of the passage is chamfered or filleted so as to face the ball, and the element includes: a surface treatment layer formed on the chamfered or filleted surface; and a layer made of a polymer and fused to the surface treatment layer.

    Venting Device
    10.
    发明申请
    Venting Device 有权

    公开(公告)号：US20210036269A1

    公开(公告)日：2021-02-04

    申请号：US16982353

    申请日：2019-12-06

    申请人： LG Chem, Ltd.

    发明人： Jae Ho Lee ,  Yong Su Choi ,  Sang Hun Kim ,  Hyung Kyun Yu ,  Na Yoon Kim

    IPC分类号： H01M2/02 ,  H01M2/12

    摘要： A venting device for insertion into a sealing part of a pouch of a secondary battery includes: a housing configured to be inserted between two surfaces of the sealing part so as to be sealed together with the sealing part; a sheet disposed in the housing and defining a passage through which an inside and an outside of the pouch are configured to communicate with each other; a plate spring configured to open and close the passage according to an internal pressure of the pouch and made of a metal having elasticity; and a ball disposed between the sheet and the plate spring so as to contact or be spaced apart from the sheet at an outlet-side of the passage, thereby opening and closing the passage, wherein the ball has a hemispherical shape to be attached to an inner surface of the plate spring.