US 12,080,931 B2
Redox flow battery and battery system
Craig E. Evans, West Linn, OR (US); Sean Casey, Oregon City, OR (US); Thiago Groberg, Tigard, OR (US); and Yang Song, West Linn, OR (US)
Assigned to ESS TECH, INC., Wilsonville, OR (US)
Filed by ESS TECH, INC., Wilsonville, OR (US)
Filed on Apr. 3, 2023, as Appl. No. 18/295,213.
Application 18/295,213 is a continuation of application No. 17/308,873, filed on May 5, 2021, granted, now 11,670,792.
Claims priority of provisional application 63/025,234, filed on May 15, 2020.
Prior Publication US 2023/0253601 A1, Aug. 10, 2023
Int. Cl. H01M 8/18 (2006.01); H01M 8/0247 (2016.01); H01M 8/242 (2016.01); H01M 8/248 (2016.01)
CPC H01M 8/188 (2013.01) [H01M 8/0247 (2013.01); H01M 8/242 (2013.01); H01M 8/248 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A flow battery comprising:
a cell stack including:
an endplate plate assembly positioned on a side of the cell stack assembly and comprising:
a first elastic flange including a recess that is mated with a section of a conductive plate and compliant in at least one of a lateral direction and a vertical direction;
a plate frame coupled to the first elastic flange; and
a pressure plate coupled to the plate frame; and
a plate assembly including a second elastic flange that has a different shape in cross-section than the first elastic flange.