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    Secondary battery with advanced safety
    5.
    发明授权
    Secondary battery with advanced safety 有权

    公开(公告)号：US09705112B2

    公开(公告)日：2017-07-11

    申请号：US14315935

    申请日：2014-06-26

    Applicant: LG Chem, Ltd.

    Inventor： Youngjoon Shin ,  Min Su Kim ,  Junill Yoon ,  Ji Heon Ryu ,  Jeong Hee Choi ,  Seung-Jin Yang

    IPC: H01M2/06 ,  H01M2/02 ,  H01M2/30 ,  H01M2/20 ,  H01M2/26 ,  H01M10/052

    CPC classification number: H01M2/06 ,  H01M2/02 ,  H01M2/021 ,  H01M2/0275 ,  H01M2/0277 ,  H01M2/0287 ,  H01M2/20 ,  H01M2/266 ,  H01M2/30 ,  H01M10/052

    Abstract: Disclosed herein is a secondary battery constructed in a structure in which an electrode assembly having a cathode/separator/anode arrangement is mounted in a battery case made of a laminate sheet including a resin layer and a metal layer, electrode tabs of the electrode assembly are coupled to corresponding electrode leads, and the electrode assembly is sealed in the battery case while electrode leads are exposed to the outside of the battery case, wherein a protective film is attached to coupling regions between the electrode tabs and the electrode leads for sealing the coupling regions between the electrode tabs and the electrode leads. The secondary battery according to the present invention is constructed in a structure in which the coupling regions are sealed by the protective film, unlike a conventional secondary battery constructed in a structure in which the coupling regions between the electrode tabs and the electrode leads are exposed in the battery case. As a result, the electrode leads are protected from external impacts, such as falling of the battery. Consequently, no internal short circuit occurs, and therefore, the safety of the battery is increased.

    Secondary battery transfer device and method for detecting receipt failure of secondary battery
    7.
    发明授权
    Secondary battery transfer device and method for detecting receipt failure of secondary battery 有权

    公开(公告)号：US10249902B2

    公开(公告)日：2019-04-02

    申请号：US14912656

    申请日：2014-09-01

    Applicant: LG CHEM LTD.

    Inventor： Seok Jin Kim ,  Min Su Kim ,  Tae Yoon Jung ,  Chang Min Han ,  Hyun Geun Jo ,  Gi Su Park

    IPC: G06F7/00 ,  H01M10/04 ,  G01R31/36 ,  H01M2/10

    Abstract: Disclosed herein are a secondary battery transfer apparatus for transferring a secondary battery in a secondary battery manufacturing process and a method for detecting a loading defect of a secondary battery in a carrier receiving the secondary battery. The secondary battery transfer apparatus includes a carrier having a receipt space to receive a secondary battery, a transfer unit transferring the carrier, a loading detection sensor sensing the secondary battery when the secondary battery inserted into the carrier reaches a designated height, and a controller receiving a result of sensing of the loading detection sensor and controlling operation of the transfer unit. The secondary battery transfer apparatus and the detection method detect whether or not a case of the secondary battery is damaged due to friction with the carrier and thus recognize a product defect in advance.

    Sealing tool for pouch type secondary battery
    8.
    发明授权
    Sealing tool for pouch type secondary battery 有权

    公开(公告)号：US09882231B2

    公开(公告)日：2018-01-30

    申请号：US14414638

    申请日：2014-07-28

    Applicant: LG CHEM, LTD.

    Inventor： Jong Hyun Won ,  Min Su Kim ,  Gyo Ryun No ,  Seul Ki Kim

    IPC: H01M10/04 ,  H01M10/058 ,  H01M2/02

    CPC classification number: H01M10/0404 ,  H01M2/021 ,  H01M2/0275

    Abstract: The present invention relates to a sealing tool for a pouch type secondary battery, which seals a pouch provided with an electrode assembly therein, the sealing tool including: a holder elevatably disposed on each of upper and lower sides of the pouch; and a sealing block coupled to the holder to contact the pouch by the elevation of the holder, thereby sealing the pouch. The sealing block and the holder are spaced apart from each other to define a space therebetween.According to the present invention, a spacing member is interposed between the holder and the sealing block of the sealing tool to define a space into which the sealing block is deformable, thereby minimizing the deformation of a sealing surface of the sealing block. Thus, the sealing part of the pouch may have a uniform thickness to prevent an electrolyte within the pouch from leaking to the outside.

    Method of manufacturing secondary battery
    9.
    发明授权
    Method of manufacturing secondary battery 有权

    公开(公告)号：US09847547B2

    公开(公告)日：2017-12-19

    申请号：US14533817

    申请日：2014-11-05

    Applicant: LG CHEM, LTD.

    Inventor： Jeoung Hwan Kim ,  Jung Kyu Woo ,  Min Su Kim

    IPC: H01M10/04 ,  H01M10/052 ,  H01M10/058

    CPC classification number: H01M10/04 ,  H01M10/0481 ,  H01M10/049 ,  H01M10/052 ,  H01M10/058 ,  Y10T29/4911

    Abstract: Provided is a method of manufacturing a secondary battery, in which scattering of an electrolyte is prevented while a degassing process is performed to prevent a product from being contaminated due to the scattering of the electrolyte. The method of manufacturing the secondary battery includes performing a formation process on a battery cell including a dead space to generate a gas within the battery cell, closing a piercing tool of a gas removing device to form a through hole in the dead space, thereby discharging the gas within the battery cell through the piercing tool, closing a sealing tool of the gas removing device after the gas is discharged to thermally bond an inner portion of the dead space that is adjacent to an electrode assembly within the battery cell, opening the piercing tool in the state where the sealing tool is closed, and opening the sealing tool after the piercing tool is opened.

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