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US 11,201,343 B2Granted
Electrolyte health management for redox flow battery
AssigneeEss Tech, Inc.
InventorsYang Song, Timothy J. McDonald, Alexandria Behr
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for a rebalancing reactor of a flow battery system. In one example, a pH of a battery electrolyte may be maintained by the rebalancing reactor by applying a negative potential to a catalyst bed of the rebalancing reactor. A performance of the rebalancing reactor may further be maintained by treating the catalyst bed with deionized water.
Claims13
A method for treating a rebalancing reactor of a flow battery comprising;
- flowing an electrolyte of the flow battery and hydrogen gas generated in the flow battery to the rebalancing reactor;
- applying a negative potential to a catalyst bed of the rebalancing reactor while flowing the electrolyte;
- detecting a decrease in a ferric iron reduction rate at the catalyst bed below a threshold rate;
- flowing deionized water instead of electrolyte across the catalyst bed in response to the decrease in the ferric iron reduction rate;
- and
- indicating, after a threshold interval of rebalancing reactor operating time elapses, a request for soaking of the catalyst bed in deionized water.
3 more elements
A method for treating a rebalancing reactor of a flow battery, comprising:
- flowing an electrolyte of the flow battery and hydrogen gas generated in the flow battery to the rebalancing reactor;
- detecting a decrease in an iron reduction rate of the rebalancing reactor;
- and
- responsive to the decrease in iron reduction rate, halting flow of electrolyte and hydrogen gas to the rebalancing reactor and flowing deionized water through the rebalancing reactor.
1 more element
Dependencies are inferred from the claim text.