Patent ID: 11923583
Assignee: RTX CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 11:
12. A method for rebalancing a redox flow battery, the method comprising:
providing a flow battery that has a redox flow cell that includes a barrier layer arranged between a first electrode and a second electrodes; a supply and storage system external of the redox flow cell, the supply and storage system including a first vessel and a second vessel, having a first electrolyte solution and a second electrolyte solution in, respectively, the first and second vessels, fluid lines that connect the first and second vessels to, respectively, the first and second electrodes, and a plurality of pumps operable to circulate the first and second electrolyte solutions via the fluid lines through the redox flow cell and the first and second vessels, the first and second electrolyte solutions include a base solvent that has a tendency to migrate across the barrier layer from the second electrode toward the first electrode causing a concentration imbalance in the first and second electrolyte solutions; and
condensing a base solvent from a vapor phase of the first electrolyte solution to produce recovered base solvent, and returning the recovered base solvent to the second electrolyte solution to thereby cause a concentration rebalance in the first and second electrolyte solutions.