US 11,668,759 B2
Method of analyzing the quality of a battery cell by performing a comprehensive quality check on battery cells assessed as low-quality from a high-throughput quality check
James R. Salvador, East Lansing, MI (US); Debejyo Chakraborty, Novi, MI (US); Ryan Curtis Sekol, Grosse Pointe Woods, MI (US); Thomas A. Yersak, Royal Oak, MI (US); Sean R. Wagner, Shelby Township, MI (US); Charles W. Wampler, Birmingham, MI (US); Ronald M. Lesperance, Troy, MI (US); Raffaello Ardanese, Bloomfield Hills, MI (US); Thanh-Son Dao, Rochester Hills, MI (US); and Dmitriy Bruder, Clinton Township, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Jun. 17, 2021, as Appl. No. 17/350,681.
Prior Publication US 2022/0404431 A1, Dec. 22, 2022
Int. Cl. G01R 31/396 (2019.01); H01M 10/42 (2006.01); G01N 30/02 (2006.01); G01F 22/00 (2006.01); G01N 33/00 (2006.01); G01R 31/382 (2019.01)
CPC G01R 31/396 (2019.01) [G01F 22/00 (2013.01); G01N 30/02 (2013.01); G01N 33/0027 (2013.01); G01R 31/382 (2019.01); H01M 10/4285 (2013.01); G01N 2030/025 (2013.01)] 13 Claims
OG exemplary drawing
 
1. A method of analyzing a quality of a battery cell, the method comprising:
performing a first high-throughput quality check on the battery cell with a quality control system, wherein the first high-throughput quality check is selected from the group consisting of analyzing a cell formation charge data of the battery cell, analyzing a volume of a gas within a gas pouch of the battery cell, analyzing a composition of the gas within the gas pouch, and analyzing a battery cell discharge check data;
assessing a first quality score to the battery cell identifying the battery cell as low-quality or high-quality, wherein the first quality score is related to an estimated charge quantity of the battery cell based on the first high-throughput quality check;
performing a comprehensive quality check on the battery cell when identified as low-quality by the first quality score, wherein the comprehensive quality check is selected from the group consisting of performing gas chromatography on the gas within the gas pouch of the battery cell identified as low-quality and performing accelerated cycle testing (ACT) through aging and repeated charge and discharge cycling of the battery cell identified as low-quality;
assessing an enhanced quality score to the battery cell based on the comprehensive quality check, with the enhanced quality score identifying the battery cell as low-quality or high-quality and the enhanced quality score representing a more accurate estimated charge quantity of the battery cell than the first quality score, wherein the enhanced quality score supersedes the first quality score; and
providing revised production instructions for manufacturing successive battery cells when the enhanced quality score identifies the battery cell as low-quality.