US 12,459,775 B2
Apparatus for cutting separator
Yong Hyun Kang, Daejeon (KR); and Sung Dong Kim, Daejeon (KR)
Assigned to LG Energy Solution, Ltd., Seoul (KR)
Appl. No. 18/276,344
Filed by LG Energy Solution, Ltd., Seoul (KR)
PCT Filed Oct. 17, 2022, PCT No. PCT/KR2022/015756
§ 371(c)(1), (2) Date Aug. 8, 2023,
PCT Pub. No. WO2023/085625, PCT Pub. Date May 19, 2023.
Claims priority of application No. 10-2021-0153806 (KR), filed on Nov. 10, 2021.
Prior Publication US 2024/0124259 A1, Apr. 18, 2024
Int. Cl. B65H 35/06 (2006.01); H01M 10/04 (2006.01); H01M 50/406 (2021.01)
CPC B65H 35/06 (2013.01) [H01M 10/0404 (2013.01); H01M 50/406 (2021.01); B65H 2301/515326 (2013.01); B65H 2402/54 (2013.01); B65H 2402/60 (2013.01); B65H 2701/18264 (2013.01); B65H 2701/19 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A separator cutting apparatus of a lamination process of stacking an electrode assembly, the separator cutting apparatus comprising:
a fixing part configured to temporarily fix the electrode assembly;
a cutter supporting part disposed above the fixing part;
a cutter part disposed below the cutter supporting part and above the fixing part, the cutter part configured to cut a separator of the electrode assembly on the fixing part; and
a spring part elastically connecting the cutter supporting part and the cutter part to each other, the spring part configured to return the cutter part to an initial position after cutting the separator,
wherein the spring part includes two spring bushes coupled to a supporting shaft extending from the cutter supporting part and a supporting shaft extending from the cutter part, respectively, two spring holders coupled to the two spring bushes, respectively, and a spring having two opposite ends coupled to the two spring holders, respectively, the spring configured to expand and contract according to an elevation of the cutter part relative to the cutter supporting part, and the spring holders and the spring bushes are each made of a non-metallic material.