US 12,218,335 B2
Electrode for secondary battery and method for manufacturing the same
Hyun Tae Kim, Daejeon (KR); and Hyun Chul Jung, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/630,388
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Jul. 30, 2020, PCT No. PCT/KR2020/010039
§ 371(c)(1), (2) Date Jan. 26, 2022,
PCT Pub. No. WO2021/020889, PCT Pub. Date Feb. 4, 2021.
Claims priority of application No. 10-2019-0092474 (KR), filed on Jul. 30, 2019.
Prior Publication US 2022/0285660 A1, Sep. 8, 2022
Int. Cl. H01M 4/04 (2006.01); H01M 50/533 (2021.01)
CPC H01M 4/04 (2013.01) [H01M 50/533 (2021.01)] 9 Claims
OG exemplary drawing
 
1. A method for manufacturing an electrode, the method comprising:
a first cutting step of cutting a portion of an electrode sheet along a first cutting line (N1) comprising a closed curve to form a first electrode having a shape corresponding to the closed curve of the first cutting line (N1); and
a second cutting step of additionally cutting a portion of the electrode sheet along a second cutting line (N2) comprising a closed curve to form a second electrode having a shape corresponding to the closed curve of the second cutting line (N2), which is separated from the first electrode formed in the first cutting step, after the first cutting step,
wherein the first cutting line (N1) and the second cutting line (N2) cross each other to form a crossing area (C1) on the electrode sheet,
wherein, in the crossing area (C1), the first cutting line (N1) is formed as a first straight line (SL1), and a first end of the first straight line (SL1) is connected to a curved line (CL) constituting a portion of the first cutting line (N1), and
wherein the first straight line (SL1) is connected to the curved line (CL) by a tangent line.