公开(公告)号：US11772197B2

公开(公告)日：2023-10-03

申请号：US16490001

申请日：2018-09-18

Applicant: LG CHEM, LTD.

Inventor： Young Kyu Lee ,  Sang Jin Kim ,  Young Su Son

IPC: B23K26/359 ,  B23K26/03 ,  B23K26/04 ,  B23K26/08 ,  H01M50/107 ,  H01M50/124 ,  B23K101/36 ,  H01M50/133

CPC classification number: B23K26/359 ,  B23K26/03 ,  B23K26/048 ,  B23K26/0876 ,  H01M50/107 ,  H01M50/124 ,  B23K2101/36 ,  H01M50/133

Abstract: A laser transmission characteristic value determination method for determining an appropriate transmission characteristic value of a laser so that a marked letter becomes a predetermined font size or more when marking a letter on a surface of a heat shrinkable tube formed on the outer periphery of a battery cell.

公开(公告)号：US11286580B2

公开(公告)日：2022-03-29

申请号：US16491476

申请日：2018-09-27

Applicant: LG CHEM, LTD.

Inventor： Sang Jin Kim ,  Chang Hong Bak ,  Hye Jin Han ,  Ki Yeon Jo ,  Jeong Hun Cho ,  Joon Hee Cho

IPC: D01D1/02 ,  D01D10/02 ,  D01D10/06 ,  D01F1/10 ,  C01B32/05 ,  C08F222/30 ,  C08J5/00 ,  D01D5/06 ,  D01F6/18 ,  D01F9/22 ,  D01D5/04 ,  D01F6/38

Abstract: The present invention relates to a method for producing an acrylonitrile-based fiber, the method including: providing a polymer solution including an acrylonitrile-based copolymer containing a carboxylic acid group; mixing 100 parts by weight of the polymer solution with 1 to 6 parts by weight of a hydrophilization solution containing an organic solvent and ammonia water in a weight ratio of 95:5 to 60:40 to prepare a spinning stock solution; and spinning the spinning stock solution. The method controls the viscosity of the spinning stock solution to improve the stretchability and strength of the acrylonitrile-based fiber, and suppresses the occurrence of gelation.

公开(公告)号：US12218320B2

公开(公告)日：2025-02-04

申请号：US16487295

申请日：2018-08-24

Applicant: LG CHEM, LTD.

Inventor： Ji Ho Yun ,  Sang Jin Kim

IPC: H01M10/48 ,  H01M50/20 ,  H01M50/213 ,  H01M50/50 ,  H01M50/502 ,  H01M50/559 ,  H01M50/548 ,  H01M50/562 ,  H01M50/586

Abstract: A battery module and a manufacturing method therefor are provided. The battery module includes a pair of cylindrical battery cells, a pair of PTC elements at one side of the pair of battery cells, a connection member at an opposite side of the pair of cylindrical battery cells from the one side of the pair of cylindrical battery cells, and a connector having four wires connected to a single connection terminal and configured to electrically connect an external system and the pair of cylindrical battery cells via the connection terminal is provided.

公开(公告)号：US11108114B2

公开(公告)日：2021-08-31

申请号：US16805189

申请日：2020-02-28

Applicant: LG CHEM, LTD.

Inventor： Sang Jin Kim

IPC: H01M50/213 ,  H01M10/42 ,  H01M50/107 ,  H01M50/543 ,  H01M50/572 ,  H04M11/00

Abstract: A battery module having first and second cylindrical battery cells, each of the first and second cylindrical battery cells having a negative electrode terminal and a positive electrode terminal, a metal plate configured to connect, in series, the first cylindrical battery cell and the second cylindrical battery cell, a shrinkable tube in which the first and second cylindrical battery cells are mounted, first and second PTC elements respectively provided to the first and second cylindrical battery cells, first insulating members provided between the first and second PTC elements and the shrinkable tube, second insulating members respectively provided between the first and second PTC elements and the first and second cylindrical battery cells, insulating sheets respectively configured to seal an upper surface and a lower surface of the shrinkable tube, and a connection part protruding outward from the shrinkable tube and configured to connect the first and second cylindrical battery cells to an external electronic apparatus in provided.