Jig device for inspecting quality of secondary battery

    公开(公告)号:US10957943B2

    公开(公告)日:2021-03-23

    申请号:US16337313

    申请日:2018-03-27

    申请人: LG CHEM, LTD.

    IPC分类号: H01M10/42 B23K37/04 G01M3/24

    摘要: A jig device for inspecting quality of a secondary battery, which fixes the secondary battery and inspects quality of the secondary battery, is provided in which the jig device includes a jig base having a seating hole, a fixed module mounted on the jig base at one side of the seating hole, a first gliding module mounted on the jig base at a side opposite to the fixed module and glidable toward the fixed module, and a support part extending across the seating hole. A masking block is mounted on one or more portions of the fixed module and the first gliding module, which comes into contact with an edge of the secondary battery to fix the secondary battery. The first gliding module is detachable from the jig base, and the support part is separable from the fixed module and the first gliding module.

    Electrode Assembly and Method for Manufacturing the Same

    公开(公告)号:US20200168941A1

    公开(公告)日:2020-05-28

    申请号:US16612908

    申请日:2018-11-16

    申请人: LG Chem, Ltd.

    IPC分类号: H01M10/04 H01M2/16 H01M2/14

    摘要: The present invention provides a method for manufacturing an electrode assembly, comprising: interposing a plurality of first electrodes one by one, which are spaced apart from each other, between two separators; stacking a second electrode on each of outer surfaces of the separators on each of both sides of the first electrode at positions that are skipped by one of the plurality of positions on which the first electrodes are disposed to alternately continuously form a bi-cell, in which the second electrode/the separator/the first electrode/the separator/the second electrode are sequentially stacked, and a half-cell, in which the separator/the first electrode/the separator are sequentially stacked; cutting the stack into a unit cell in which one bi-cell and one half-cell are connected to each other; folding the unit cell so that the bi-cell and the half-cell are stacked; and stacking a plurality of folded unit cells to manufacture the electrode assembly.

    Electrode, method for manufacturing the electrode, and roller for manufacturing the electrode

    公开(公告)号:US11196031B2

    公开(公告)日:2021-12-07

    申请号:US15757886

    申请日:2017-07-03

    申请人: LG Chem, Ltd.

    IPC分类号: H01M4/04 H01M4/13 H01M4/139

    摘要: The present invention relates to an electrode, for reducing a difference in ductility between a non-coating portion and a coating portion of the electrode, a method for manufacturing the electrode, and a roller for manufacturing the electrode. Also, the electrode according to the present invention includes an electrode foil, a coating portion coated with an electrode active material on one surface of the electrode foil, and a non-coating portion which is disposed adjacent to the coating portion on the one surface of the electrode foil, and is not coated with the electrode active material and on which a pattern is disposed.

    System for non-destructively inspecting and determining sealing of aluminum pouch by using ultrasonic waves

    公开(公告)号:US10921294B2

    公开(公告)日:2021-02-16

    申请号:US16325507

    申请日:2018-01-30

    申请人: LG CHEM, LTD.

    摘要: A non-destructive inspection judgment system for inspecting a non-destructive inspection subject using ultrasonic waves, including an ultrasonic wave generator transmitting and receiving ultrasonic signals by generating ultrasonic waves to the non-destructive inspection subject placed on an inspection table, an interface transmitting an ultrasonic signal received from the ultrasonic wave generator to an ultrasonic wave generation data controller, the ultrasonic wave generation data controller processing ultrasonic wave data received from the interface, a sealing defect presence judger determining, using the processed ultrasonic wave data, whether a sealing defect is present, and a display displaying a result of the judgment on a monitor to detect an unsealed portion of an aluminum pouch.

    Secondary battery transfer device and method for detecting receipt failure of secondary battery

    公开(公告)号:US10249902B2

    公开(公告)日:2019-04-02

    申请号:US14912656

    申请日:2014-09-01

    申请人: LG CHEM LTD.

    摘要: 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.

    Electrode assembly and method for manufacturing the same

    公开(公告)号:US11342576B2

    公开(公告)日:2022-05-24

    申请号:US16612908

    申请日:2018-11-16

    申请人: LG Chem, Ltd.

    摘要: The present invention provides a method for manufacturing an electrode assembly, comprising: interposing a plurality of first electrodes one by one, which are spaced apart from each other, between two separators; stacking a second electrode on each of outer surfaces of the separators on each of both sides of the first electrode at positions that are skipped by one of the plurality of positions on which the first electrodes are disposed to alternately continuously form a bi-cell, in which the second electrode/the separator/the first electrode/the separator/the second electrode are sequentially stacked, and a half-cell, in which the separator/the first electrode/the separator are sequentially stacked; cutting the stack into a unit cell in which one bi-cell and one half-cell are connected to each other; folding the unit cell so that the bi-cell and the half-cell are stacked; and stacking a plurality of folded unit cells to manufacture the electrode assembly.