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US 2021/0242479 A1Published application
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.
Claims9
1-8. (canceled)
A redox flow battery system, comprising;
- an electrolyte circulating through a cell of the redox flow battery and hydrogen gas stored in electrolyte chambers of the redox flow battery, both the electrolyte and hydrogen gas flowed to a rebalancing reactor coupled to the cell;
- a negative potential applied to the catalyst bed during charging of the redox flow battery;
- a controller, configured with computer readable instructions stored on non-transitory memory, the instructions executable by the controller to:
- apply a negative potential to the catalyst bed during charging of the redox flow battery;
- flush the catalyst bed with deionized water upon detection of the rate of ferric iron reduction at the rebalancing reactor falling below a second threshold;
- and
- indicate a request for soaking of the catalyst bed in deionized water when an interval of operating time of the redox flow battery is elapsed.
4 more elements
16-20. (canceled)
Dependencies are inferred from the claim text.