公开(公告)号：EP4270567A1

公开(公告)日：2023-11-01

申请号：EP21911584.7

申请日：2021-12-23

申请人： LG Energy Solution, Ltd.

发明人： PARK, Dong Hyeuk ,  PARK, Sin Young ,  PARK, Sung Chul ,  KANG, Tae Won ,  KIM, Ju Hyung ,  YANG, Gi

IPC分类号： H01M10/04

摘要： The present invention relates to an apparatus for manufacturing a unit cell, which cuts a lower separator and an upper separator between electrodes adjacent to each other in a process of manufacturing the unit cell provided in a state, in which the lower separator and the upper separator continuously move in a longitudinal direction, and the electrodes are stacked between the lower separator and the upper separator and on the upper separator, respectively, the apparatus comprising: a lower roller disposed under the lower separator; and an upper roller which is disposed above the upper separator so as to be vertically aligned with the lower roller and has an oval shape with a long axis and a short axis, wherein, when the electrodes pass while the upper roller rotates, the upper roller is not in contact with the upper separator, and after the electrodes pass, the upper roller presses the upper separator and the lower separator to a surface of the lower roller, and at least one of the lower roller or the upper roller is heated to a predetermined temperature to thermally fuse points at which the upper separator and the lower separator are pressed.

公开(公告)号：EP4184630A1

公开(公告)日：2023-05-24

申请号：EP21841846.5

申请日：2021-07-01

申请人： LG Energy Solution, Ltd.

发明人： PARK, Sung Chul ,  PARK, Dong Hyeuk ,  KIM, Sang Wook ,  KIM, Ju Hyung

IPC分类号： H01M10/04

摘要： The present invention relates to a separator sealing device and an apparatus for manufacturing a unit cell using the same, and more particularly, to a separator sealing device, which is capable of sealing a portion of a separator between an electrode and an electrode with accuracy, efficiency, and improved quality and capable of being used continuously and economically without problems due to deformation, and an apparatus for manufacturing a unit cell using the same.
A separator sealing device according to the present invention includes: a first sealing unit provided with a sealing tip having a protruding shape to press a separator on an outer surface thereof, the first sealing unit rotating about a first rotation shaft; and a second sealing unit provided with a pressing surface that faces the sealing tip to press the separator on a circumference thereof, the second sealing unit rotating about a second rotation shaft, wherein, when the first sealing unit and the second sealing unit rotate, the sealing tip and the pressing surface press the separator disposed between the first sealing unit and the second sealing unit to perform the sealing of the separator.
Specifically, the apparatus for manufacturing the unit cell according to the present invention may be an apparatus for manufacturing a unit cell, which manufactures a unit cell, in which electrodes and separators are alternately stacked, and the apparatus includes: a lamination device configured to laminate an electrode stack in which a sheet-type separator and a plurality of electrodes are alternately stacked through heat and a pressure; a separator sealing device configured to seal a portion between the plurality of electrodes, which are arranged in a longitudinal direction of the sheet-type separator on the sheet-type separator in the electrode stack passing through the lamination device; and a cutting device configured to cut the portion between the plurality of electrodes, which is sealed after the separator sealing device performs the sealing operation.

公开(公告)号：EP4328010A1

公开(公告)日：2024-02-28

申请号：EP22858814.1

申请日：2022-08-22

申请人： LG Energy Solution, Ltd.

发明人： NOH, So Yeon ,  PARK, Ji Soo ,  KIM, Ju Hyung ,  KANG, Tae Won ,  PARK, Dong Hyeuk ,  KIM, Yong Nam

IPC分类号： B29C65/00 ,  H01M50/105 ,  B29C65/18 ,  B29C65/30 ,  B29L31/00

摘要： The present invention relates to a pouch-type battery cell, a device for bending a pouch wing in the battery cell, and a method for bending a pouch wing in the battery cell, and specifically, relates to a pouch-type battery cell capable of improving insulation resistance performance of the battery cell by bending a pouch wing while heat-treating a sealing part of the pouch wing in the battery cell, thereby preventing and removing cracks in the sealing part, a device for bending a pouch wing in the battery cell, and a method for bending a pouch wing in the battery cell.

公开(公告)号：EP4123797A1

公开(公告)日：2023-01-25

申请号：EP21892168.2

申请日：2021-10-18

申请人： LG Energy Solution, Ltd.

发明人： KIM, Ju Hyung ,  PARK, Ji Soo ,  PARK, Sin Young ,  PARK, Dong Hyeuk

IPC分类号： H01M50/116 ,  H01M50/30 ,  B26F1/44

摘要： A pouch cell cutting apparatus according to an embodiment of the present disclosure, includes a top knife and a bottom knife for cutting a sealing part of a battery cell which includes a cell case and an electrode assembly housed in the cell case, wherein both side parts of the top knife comprise protrusion parts protruding toward recessed parts formed on both side parts of the bottom knife, respectively, and wherein a corner part of the battery cell is cut by the protrusion part.