公开(公告)号：US20170301900A1

公开(公告)日：2017-10-19

申请号：US15513367

申请日：2015-10-26

Applicant: LG CHEM, LTD.

Inventor： Tae-Su KIM ,  Ki-Eun SUNG ,  Jin-Soo LEE ,  Bu-Gon SHIN ,  Sang-Ik LEE ,  Dae-Won LEE

IPC: H01M2/14 ,  H01M2/16 ,  B23K26/402 ,  B23K26/38 ,  B23K26/082 ,  B23K101/36 ,  B23K103/16

CPC classification number: H01M2/145 ,  B23K26/082 ,  B23K26/38 ,  B23K26/402 ,  B23K2101/36 ,  B23K2103/172 ,  H01M2/1646 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/052

Abstract: The present invention relates to a method for cutting a separation membrane for a battery, in which the separation membrane is cut by laser radiation on the separation membrane, wherein the pulse repetition rate of the laser is 10 to 500 kHz; a separation membrane manufactured by the method; and a battery comprising the separation membrane. The present invention, in contrast with physical cutting, has the advantage of being capable of cutting a separation membrane for a battery so as to have a uniform cut surface, which was impossible by conventional physical cutting methods.

公开(公告)号：US20210328305A1

公开(公告)日：2021-10-21

申请号：US17362519

申请日：2021-06-29

Applicant: LG CHEM, LTD.

Inventor： Tae-Su KIM ,  Ki-Eun SUNG ,  Jin-Soo LEE ,  Bu-Gon SHIN ,  Sang-Ik LEE ,  Dae-Won LEE

IPC: H01M50/403 ,  H01M50/411 ,  H01M50/431 ,  H01M50/449 ,  B23K26/082 ,  B23K26/38 ,  B23K26/402

Abstract: The present invention relates to a method for cutting a separation membrane for a battery, in which the separation membrane is cut by laser radiation on the separation membrane, wherein the pulse repetition rate of the laser is 10 to 500 kHz; a separation membrane manufactured by the method; and a battery comprising the separation membrane. The present invention, in contrast with physical cutting, has the advantage of being capable of cutting a separation membrane for a battery so as to have a uniform cut surface, which was impossible by conventional physical cutting methods.