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：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：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：US20190044177A1

公开(公告)日：2019-02-07

申请号：US15759618

申请日：2017-07-07

Applicant: LG CHEM, LTD.

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

IPC: H01M10/04 ,  H01M2/16 ,  H01M2/18

Abstract: The present invention relates to an electrode assembly and a method for manufacturing the same, and more particularly, to an electrode assembly in which a degree of alignment of cells is improved and a method for manufacturing the same. An electrode assembly according to the present invention comprises a separator sheet folded in a zigzag shape and a unit cell having a structure in which an electrode and a separator are alternately stacked, wherein the unit cell is repeatedly disposed between the separator sheet that is folded in a zigzag shape, and at least a portion of the unit cell and at least a portion of the separator sheet are bonded to each other.

公开(公告)号：US20190355951A1

公开(公告)日：2019-11-21

申请号：US16315747

申请日：2017-08-10

Applicant: LG CHEM, LTD.

Inventor： Sang Kyun LEE ,  Ju Hyeon CHO ,  Cha-Hun KU ,  Seok Jin KIM ,  Duck Hoe KIM

IPC: H01M2/16 ,  H01M10/04 ,  B32B37/12 ,  H01M4/62

Abstract: An electrode assembly for a secondary battery having reduced internal resistance while adhesion between a separator and an electrode is maintained and having improved electrolyte impregnation the electrode assembly including a separator having a processed area having undergone a corona discharging process and a non-processed area.

公开(公告)号：US20180205090A1

公开(公告)日：2018-07-19

申请号：US15743749

申请日：2017-03-30

Applicant: LG CHEM, LTD.

Inventor： Jung Pil LEE ,  Sang Kyun LEE

IPC: H01M4/74 ,  H01M10/058 ,  H01M10/48 ,  H01M4/66 ,  H01M10/0525

CPC classification number: H01M4/74 ,  H01M4/13 ,  H01M4/662 ,  H01M4/742 ,  H01M10/052 ,  H01M10/0525 ,  H01M10/058 ,  H01M10/48 ,  H01M2004/021

Abstract: The present invention relates to a method of preparing a lithium secondary battery which may improve productivity and performance of the lithium secondary battery by visually measuring an electrolyte solution impregnation time for an electrode active material, setting an optimum estimated electrolyte solution impregnation time of the electrolyte solution for a battery based on a measured result, and reflecting the optimum estimated electrolyte solution impregnation time in a production process.