US 12,140,638 B2
Method for measuring cell performance
Woo Sirl Lee, Daejeon (KR); Do Hwa Jung, Daejeon (KR); and Ki Woong Kim, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/296,368
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 25, 2019, PCT No. PCT/KR2019/016273
§ 371(c)(1), (2) Date May 24, 2021,
PCT Pub. No. WO2020/111695, PCT Pub. Date Jun. 4, 2020.
Claims priority of application No. 10-2018-0151257 (KR), filed on Nov. 29, 2018.
Prior Publication US 2021/0396810 A1, Dec. 23, 2021
Int. Cl. G01R 31/36 (2020.01); H01M 10/04 (2006.01); H01M 50/531 (2021.01)
CPC G01R 31/36 (2013.01) [H01M 10/0436 (2013.01); H01M 50/531 (2021.01)] 12 Claims
OG exemplary drawing
 
1. A method for measuring performance of a unit cell, the method comprising:
alternately laminating a first electrode provided with a first electrode tab, a separator, and a second electrode provided with a second electrode tab to be bonded to each other;
an additional lamination step of further laminating counter electrodes, each counter electrode having a same polarity as a polarity of the second electrode and provided with a third electrode tab, on sides facing the first electrode at outermost sides of the unit cell with the separator therebetween; and
an outer interface analysis step of measuring a difference in performance between the first electrode and one of the counter electrodes by electrically connecting the first electrode tab disposed on the first electrode to the third electrode tab disposed on one of the counter electrodes.