US 12,270,754 B2
Dry quality evaluation device for electrode and dry quality evaluation method for electrode
Kyung Mee Lee, Daejeon (KR); Won Seok Cho, Daejeon (KR); Hyun Jin Yang, Daejeon (KR); Kyoung Ho Kim, Daejeon (KR); and Myung Han Lee, Daejeon (KR)
Assigned to LG ENERGY SOLUTION, LTD., Seoul (KR)
Appl. No. 17/797,455
Filed by LG ENERGY SOLUTION, LTD., Seoul (KR)
PCT Filed Nov. 11, 2020, PCT No. PCT/KR2020/015814
§ 371(c)(1), (2) Date Aug. 4, 2022,
PCT Pub. No. WO2022/045454, PCT Pub. Date Mar. 3, 2022.
Claims priority of application No. 10-2020-0109043 (KR), filed on Aug. 28, 2020.
Prior Publication US 2023/0127402 A1, Apr. 27, 2023
Int. Cl. G01N 21/25 (2006.01); F26B 3/04 (2006.01); F26B 3/30 (2006.01); F26B 13/00 (2006.01); F26B 13/10 (2006.01); F26B 25/22 (2006.01); G01J 3/46 (2006.01); G01N 21/29 (2006.01); G01N 21/81 (2006.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01)
CPC G01N 21/251 (2013.01) [F26B 3/04 (2013.01); F26B 3/30 (2013.01); F26B 13/002 (2013.01); F26B 13/103 (2013.01); F26B 25/22 (2013.01); F26B 25/225 (2013.01); G01J 3/46 (2013.01); G01N 21/293 (2013.01); G01N 21/81 (2013.01); H01M 4/0404 (2013.01); H01M 4/0435 (2013.01); H01M 4/0471 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11)] 17 Claims
OG exemplary drawing
 
1. An apparatus for evaluating drying quality of an electrode, the apparatus comprising:
an oven configured to provide a space in which an electrode is dried;
a sensor configured to be positioned at an outlet of the oven and to measure a color coordinate value of an electrode active material layer of the dried electrode; and
a processor configured to determine whether a dry state of the dried electrode is defective from the color coordinate value, to set a reference value, and to determine that the dry state is defective if the measured color coordinate value is less than the reference value, and a difference between the measured color coordinate value and the reference value is 0.5 or more,
wherein the color coordinate value is L*.