US 12,266,093 B2
Battery cell electrode alignment inspection method for battery pack of vehicle
Hokyeong Oh, Seoul (KR); Seho Kwon, Gyeonggi-do (KR); and Jinho Ban, Gyeonggi-do (KR)
Assigned to Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed by Hyundai Motor Company, Seoul (KR); and Kia Corporation, Seoul (KR)
Filed on Feb. 23, 2022, as Appl. No. 17/678,480.
Claims priority of application No. 10-2021-0118444 (KR), filed on Sep. 6, 2021.
Prior Publication US 2023/0074096 A1, Mar. 9, 2023
Int. Cl. G06T 7/00 (2017.01); H01M 10/04 (2006.01)
CPC G06T 7/0006 (2013.01) [H01M 10/0459 (2013.01); G06T 2207/10116 (2013.01); G06T 2207/30164 (2013.01); G06T 2207/30204 (2013.01); H01M 2220/20 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A battery cell electrode alignment inspection method for inspecting an alignment state of a jelly roll configured of negative and positive electrode plates and a separator of a battery cell, comprising:
obtaining electrode vision image data by capturing vision images of individual negative and positive electrode plates configuring the jelly roll by a vision camera;
obtaining dimensional data of the individual negative and positive electrode plates by analyzing the electrode vision image data;
storing the obtained dimensional data of the individual negative and positive electrode plates in a server;
marking a cell barcode for identification of the jelly roll;
scanning, by a barcode scanner, the cell barcode to receive the dimensional data of the individual negative and positive electrode plates of the jelly roll from the server;
X-ray-capturing, by an X-ray projector, the jelly roll to obtain X-ray image data of the individual negative and positive electrode plates; and
substituting the dimensional data of the individual negative and positive electrode plates to the obtained X-ray images of the individual negative and positive electrode plates to derive positions of the individual negative and positive electrode plates and to calculate a gap between closest adjacent ones of the individual negative and positive electrode plates.