公开(公告)号：US20200185680A1

公开(公告)日：2020-06-11

申请号：US16352016

申请日：2018-04-06

Applicant: LG CHEM, LTD.

Inventor： Duck Hoe KIM ,  Min Wook KIM ,  Ju Hyeon CHO ,  Cha Hun KU ,  Sang Kyun LEE

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/058 ,  H05H1/24

Abstract: The present invention relates to a plasma generating apparatus for a secondary battery. The plasma generating apparatus for the secondary battery comprises a transfer roller that transfers a separator, a metal member disposed within the transfer roller, a plasma generating member that interacts with the metal member to generate a plasma and irradiate the generated plasma onto a surface of the separator, and a protrusion member that causes a portion of the separator closely attached to the transfer roller to protrude and forms an adhesion area, which is adhesive, and a non-adhesion area, which is non-adhesive or less adhesive than the adhesion area, by allowing the plasma to be irradiated onto the adhesion area and no plasma or less plasma to be irradiated onto the non-adhesion area.

公开(公告)号：US20190170703A1

公开(公告)日：2019-06-06

申请号：US16325507

申请日：2018-01-30

Applicant: LG CHEM, LTD.

Inventor： Sang Hyun KOO ,  Seok Jin KIM ,  Cha Hun KU

IPC: G01N29/44 ,  G01N29/04 ,  G01N29/06 ,  G01N29/36

Abstract: 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.

公开(公告)号：US20220034843A1

公开(公告)日：2022-02-03

申请号：US17276449

申请日：2020-03-25

Applicant: LG CHEM, LTD.

Inventor： Seok Jin KIM ,  Sang Hyun KOO ,  Cha Hun KU ,  Jung Hoon LEE

IPC: G01N27/9013 ,  G01V8/10 ,  G01N27/90

Abstract: The present invention relates to a device for detecting a crack in a battery cell by using an eddy current, comprising: an inspection unit comprising a first sensor for inducing an eddy current and a second sensor for sensing a signal of the eddy current induced by the first sensor, wherein the inspection unit performs inspection by means of the eddy current while the battery cell is driven; a transfer unit for sequentially transferring a plurality of battery cells from a point where the battery cells are introduced to a point where the battery cells are taken out; and a control unit which is electrically connected to the inspection unit and receives, evaluates, and controls the eddy current signal sensed by the inspection unit. The device for detecting a crack in a battery cell of the present invention can detect the presence and positions of cracks generated on an electrode, an electrode tab, and a welding unit by means of a non-destructive method.

公开(公告)号：US20190207243A1

公开(公告)日：2019-07-04

申请号：US16311143

申请日：2018-01-09

Applicant: LG CHEM, LTD.

Inventor： Sang Kyun LEE ,  Sang Baek RYU ,  Kieun SUNG ,  Cha Hun KU ,  Duck Hoe KIM

IPC: H01M10/04 ,  H01M2/16 ,  H01M4/04 ,  H05H1/48 ,  H01M2/26

CPC classification number: H01M10/0436 ,  H01M2/145 ,  H01M2/16 ,  H01M2/1673 ,  H01M2/26 ,  H01M4/04 ,  H01M10/04 ,  H01M10/0404 ,  H01M10/052 ,  H01M10/0583 ,  H01M10/0585 ,  H05H1/24 ,  H05H1/48 ,  H05H2001/2412 ,  H05H2001/2418 ,  H05H2001/2431 ,  H05H2001/481

Abstract: A plasma generating apparatus for a secondary battery, including a roller part having a transfer roller configured to transfer a separator and a metal member built in the transfer roller, and a plasma generating part interacting with the metal member to generate plasma and thereby to form a mask that is patterned on a surface of the separator and has a bonding force.

公开(公告)号：US20180248219A1

公开(公告)日：2018-08-30

申请号：US15754678

申请日：2017-04-13

Applicant: LG CHEM, LTD.

Inventor： Sung Jong KIM ,  Cha Hun KU ,  Tae Kyu KIM ,  Kyung Taek KIM ,  Dong Hyun KIM

IPC: H01M10/04 ,  H01M2/02

CPC classification number: H01M10/049 ,  H01M2/02 ,  H01M2/0267 ,  H01M2/361 ,  H01M2/362 ,  H01M2/365 ,  H01M10/04 ,  H01M10/0404 ,  H01M10/0436 ,  H01M10/0463 ,  H01M10/0468 ,  H01M10/0481

Abstract: The present invention relates to a method for manufacturing a secondary battery. The method comprises: a first process (S10) of manufacturing an incomplete electrode assembly; a second process (S20) of preparing a pattern member on which a patterned pressing protrusion is formed; a third process (S30) of stacking the pattern member on an outer surface of the incomplete electrode assembly; a fourth process (S40) of partially pressing the incomplete electrode assembly to pattern-bond an interface between the electrode and the separator and thereby to manufacture a complete electrode assembly; a fifth process (S50) of accommodating the complete electrode assembly into a case; a sixth process (S60) of injecting an electrolyte to impregnate the electrolyte into the electrode assembly; a seventh process (S70) of sealing an unsealed surface to manufacture a secondary battery; and an eighth process (S80) of heating and pressing an entire surface of the secondary battery.

公开(公告)号：US20180323415A1

公开(公告)日：2018-11-08

申请号：US15737964

申请日：2017-01-12

Applicant: LG CHEM, LTD.

Inventor： Sang Kyun LEE ,  Cha Hun KU ,  Jung Kwan PYO ,  Ju Hyeon CHO

IPC: H01M2/16 ,  H01M2/14 ,  H01M2/26 ,  H01M10/04

Abstract: The present invention relates to an electrode assembly. The electrode assembly comprises: a first separator sheet; and a first electrode sheet and a second electrode sheet, which respectively adhere to both surfaces of the first separator sheet, wherein patterned masks having different adhesion force are respectivley disposed on both the surfaces of the first separator sheet, and the first electrode sheet adheres to the mask of a first surface of both the surfaces, which has relatively high adhesion force, and the second electrode sheet adheres to the mask of a second surface having relatively low adhesion force.

公开(公告)号：US20180175337A1

公开(公告)日：2018-06-21

申请号：US15737356

申请日：2016-10-11

Applicant: LG CHEM, LTD.

Inventor： Sang Kyun LEE ,  Cha Hun KU

IPC: H01M2/08 ,  H01M10/04 ,  H01M2/04

Abstract: The present invention relates to a sealing apparatus for a secondary battery, which seals a sealing part of a case in which an electrode assembly and an electrolyte are accommodated, and the sealing apparatus comprises a sealing member comprising a first sealing piece and a second sealing piece, which thermally fuse a surface of the sealing part to seal the sealing part, wherein the first sealing piece and the second sealing piece comprise a plurality of thermal fusion parts, which are disposed from an outer end of a surface of the sealing part toward an inner end that is opposite to the outer end to thermally fuse the surface of the sealing part, and non-thermal fusion parts, which are disposed between the plurality of thermal fusion parts and do not seal the surface of the sealing part.

公开(公告)号：US20210234186A1

公开(公告)日：2021-07-29

申请号：US17257249

申请日：2020-01-02

Applicant: LG CHEM, LTD.

Inventor： Duck Hoe KIM ,  Cha Hun KU ,  Dae Bong LIM ,  Soon Kwan KWON ,  Hyun Kyung SHIN ,  Ju Hyeon CHO ,  Ji Su AN

IPC: H01M10/04 ,  H01M10/0585

Abstract: Discussed is an apparatus for manufacturing a unit cell of a battery, the apparatus including: a center electrode reel from which a center electrode is unwound; an upper separator reel from which an upper separator laminated on a top surface of the center electrode is unwound; a lower separator reel from which a lower separator laminated on a bottom surface of the center electrode is unwound; and a magnetic force generation part disposed above or below a first laminate to apply magnetic force to the first laminate, the first laminate including the lower separator, the center electrode, and the upper separator that are sequentially laminated.

公开(公告)号：US20200370882A1

公开(公告)日：2020-11-26

申请号：US16636244

申请日：2019-03-22

Applicant: LG CHEM, LTD.

Inventor： Tai Jin JUNG ,  Cha Hun KU ,  Su Taek JUNG ,  Jung Kwan PYO

IPC: G01B11/27 ,  G01N21/95 ,  H04N5/225

Abstract: An alignment inspection apparatus for the electrode assembly including a laminate, in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially laminated, includes a camera disposed above a central portion of the electrode assembly to photograph and inspect the electrode assembly and side lights obliquely irradiating light onto each of both ends of the upper electrode. The side lights are symmetrical to each other with respect to the central portion of the electrode assembly.

公开(公告)号：US20200212494A1

公开(公告)日：2020-07-02

申请号：US16619751

申请日：2019-02-18

Applicant: LG CHEM, LTD.

Inventor： Won Nyeon KIM ,  Jung Kwan PYO ,  Cha Hun KU ,  Byeong Kyu LEE ,  Tai Jin JUNG

IPC: H01M10/0585 ,  G01B11/26

Abstract: An apparatus for manufacturing the secondary battery includes a first measurement part photographing unit cells, which are continuously transferred, to measure a position of a first electrode having a relatively large size of the first electrode and a second electrode, which are provided in the unit cells and have polarities opposite to each other, from an image of each of the photographed unit cells; and a first arrangement part disposing the unit cell passing through the first measurement part at a preset position of the separation sheet to adjust an interval between the unit cells disposed on the separation sheet on the basis of the position of the first electrode, which is measured by the first measurement part.