US 11,728,497 B2
Multi-stage rebalancing reactor for redox flow battery system
Yang Song, West Linn, OR (US); Craig E. Evans, West Linn, OR (US); Timothy J. McDonald, Portland, OR (US); Kenneth Fisher, Portland, OR (US); and Sean Kissick, Portland, OR (US)
Assigned to ESS TECH, INC., Wilsonville, OR (US)
Filed by ESS TECH, INC., Wilsonville, OR (US)
Filed on Oct. 27, 2020, as Appl. No. 17/81,695.
Claims priority of provisional application 62/933,000, filed on Nov. 8, 2019.
Prior Publication US 2021/0143455 A1, May 13, 2021
Int. Cl. H01M 8/04 (2016.01); H01M 8/04276 (2016.01); H01M 8/18 (2006.01); H01M 8/04186 (2016.01)
CPC H01M 8/04276 (2013.01) [H01M 8/04186 (2013.01); H01M 8/188 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A redox flow battery system, comprising:
an electrolyte storage tank configured to supply an electrolyte to a battery cell of the redox flow battery system and separate gas from the electrolyte; and
a multi-stage rebalancing reactor fluidly coupled to the electrolyte storage tank, wherein each stage of the multi-stage rebalancing reactor is fluidly coupled to at least one adjacent stage, and wherein each stage of the multi-stage rebalancing reactor is formed of multiple reactor vessels that are individually housed, wherein each of the multiple reactor vessels are spaced apart from other reactor vessels of the multiple reactor vessels within a same stage, aligned with a vertical axis, and configured to facilitate reduction of an ion and oxidation of a gas.