公开(公告)号：US20230228486A1

公开(公告)日：2023-07-20

申请号：US18011376

申请日：2022-02-24

Applicant: LG Energy Solution, Ltd.

Inventor： Jin Gon Kim ,  Tae Won Kang ,  Su Taek Jung ,  Dong Hyeuk Park ,  Sang Ho Bae ,  Woo Sun Jang

IPC: F26B15/12 ,  F26B25/00 ,  F26B5/04 ,  H01M4/04

CPC classification number: F26B15/12 ,  F26B25/005 ,  F26B5/04 ,  H01M4/0471

Abstract: An apparatus for vacuum-drying an electrode in a roll-to-roll state according to the present technology includes a low-vacuum evacuation device configured to evacuate a vacuum chamber to a low vacuum level, a medium-high-vacuum evacuation device connected to the vacuum chamber by a medium-high-vacuum pipe separate from a low-vacuum pipe and configured to evacuate the vacuum chamber to a medium vacuum level or a high vacuum level; and a control unit connected to the low-vacuum evacuation device and the medium-high-vacuum evacuation device and configured to regulate a vacuum level in the vacuum chamber stepwise to dry the electrode.

公开(公告)号：US20230173606A1

公开(公告)日：2023-06-08

申请号：US17924235

申请日：2021-08-11

Applicant: LG Energy Solution, Ltd.

Inventor： Joo Young Chung ,  Won Pill Hwang ,  Sang Ho Bae ,  Su Taek Jung

IPC: B23K20/10 ,  H01M50/183

CPC classification number: B23K20/10 ,  H01M50/183

Abstract: The present invention provides a sealing process for a secondary battery of the present invention, which thermally fuses and seals a sealing portion that extends along an edge surface of a battery case, the sealing process comprising: an arrangement operation of disposing the sealing portion of the battery case between an anvil and a horn; a first region-fixing operation of pressing and fixing a first region of the sealing portion through the anvil and the horn; and a first region-primary sealing operation of applying an ultrasonic wave to the first region of the sealing portion through the horn at a set frequency and a set amplitude for a set time, thereby thermally fusing the first region of the sealing portion.

公开(公告)号：US20230133623A1

公开(公告)日：2023-05-04

申请号：US17918761

申请日：2021-04-26

Applicant: LG Energy Solution, Ltd.

Inventor： Won Pill Hwang ,  Sang Woo Lee ,  Su Taek Jung ,  Sang Ho Bae ,  Min Cheol Choi ,  Jin Gon Kim ,  Yong Jun Lee

IPC: H01M50/124 ,  H01M50/105

Abstract: A method for repairing a secondary battery according to an embodiment of the present invention for solving the above problems includes: a step, in which cracks are formed in an outer surface of a battery case of the pouch-type secondary battery; a step of locally applying a metal solution to the cracks; and a step of drying the metal solution to form a coating part.

公开(公告)号：US20230126524A1

公开(公告)日：2023-04-27

申请号：US17912734

申请日：2021-03-25

Applicant: LG Energy Solution, Ltd.

Inventor： Tai Jin Jung ,  Su Taek Jung ,  Soon Kwan Kwon ,  Sang Ho Bae ,  Seong Won Choi ,  Yong Jun Lee

IPC: H01M10/04

Abstract: An apparatus for preparing a unit cell is provided. The apparatus includes a lower separator reel from which a lower separator sheet is unwound, a first nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound lower separator sheet, an upper separator reel from which an upper separator sheet is unwound, a second nozzle configured to apply an adhesive to at least a portion of one surface facing upward of the unwound upper separator sheet, and a first nip roll configured to turn opposite surfaces of the upper separator sheet upside down so that the one surface of the upper separator sheet to which the adhesive has been applied is directed downward and adheres to an upper surface of a first electrode stably placed on the one surface of the lower separator sheet.