US 12,243,992 B2
Battery cell including electrolyte ion concentration measurement unit and method for measuring electrolyte concentration using same
Soon Ju Choi, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
Filed on Dec. 5, 2023, as Appl. No. 18/529,843.
Application 18/529,843 is a division of application No. 17/044,362, granted, now 11,881,570, previously published as PCT/KR2019/013836, filed on Oct. 21, 2019.
Claims priority of application No. 10-2018-0131467 (KR), filed on Oct. 31, 2018.
Prior Publication US 2024/0106018 A1, Mar. 28, 2024
Int. Cl. H01M 10/48 (2006.01); G01R 31/374 (2019.01); H01M 10/0585 (2010.01); H01M 50/569 (2021.01)
CPC H01M 10/484 (2013.01) [G01R 31/374 (2019.01); H01M 10/0585 (2013.01); H01M 10/48 (2013.01); H01M 50/569 (2021.01)] 6 Claims
OG exemplary drawing
 
1. A method of measuring electrolyte concentration of a secondary battery, the method comprising:
manufacturing a measuring unit in which a first electrode plate, an insulating film and a second electrode plate are sequentially stacked;
connecting electric wires to one end of the first electrode plate and the second electrode plate;
inserting the measuring unit into a space between an electrode and a separator of a battery cell; and
drawing out the electric wire to an outside of the battery cell;
calculating a concentration of electrolyte ions contained in the insulating film by connecting a measuring device to the electric wire.