Internally manifolded flow cell for an all-iron hybrid flow battery
First Claim
1. A system for an all-iron hybrid flow battery, comprising:
- a redox electrolyte tank including a redox electrolyte;
a plating electrolyte tank including a plating electrolyte; and
a power module coupled to the redox electrolyte tank via a first pump and further coupled to the plating electrolyte tank via a second pump, the power module comprising an internally manifolded flow cell stack, the internally manifolded flow cell stack comprising;
two or more electrolyte feeds connected to the redox electrolyte tank and/or the plating electrolyte tank;
a first sub-stack comprising at least one first flow cell coupled to a first electrolyte feed, wherein the first flow cell comprises a first negative electrode and a first positive electrode; and
a second sub-stack comprising at least one second flow cell coupled to a second electrolyte feed, wherein the second flow cell comprises a second negative electrode and a second positive electrode,wherein each sub-stack is coupled to a separate electrolyte feed, such that each sub-stack receives electrolyte independently from all other sub-stacks.
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Accused Products
Abstract
In one example, a system for a flow cell for a flow battery, comprising: a first flow field; and a polymeric frame, comprising: a top face; a bottom face, opposite the top face; a first side; a second side, opposite the first side; a first electrolyte inlet located on the top face and the first side of the polymeric frame; a first electrolyte outlet located on the top face and the second side of the polymeric frame; a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet; and a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet. In this way, shunt currents may be minimized by increasing the length and/or reducing the cross-sectional area of the electrolyte inlet and electrolyte outlet flow paths.
62 Citations
21 Claims
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1. A system for an all-iron hybrid flow battery, comprising:
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a redox electrolyte tank including a redox electrolyte; a plating electrolyte tank including a plating electrolyte; and a power module coupled to the redox electrolyte tank via a first pump and further coupled to the plating electrolyte tank via a second pump, the power module comprising an internally manifolded flow cell stack, the internally manifolded flow cell stack comprising; two or more electrolyte feeds connected to the redox electrolyte tank and/or the plating electrolyte tank; a first sub-stack comprising at least one first flow cell coupled to a first electrolyte feed, wherein the first flow cell comprises a first negative electrode and a first positive electrode; and a second sub-stack comprising at least one second flow cell coupled to a second electrolyte feed, wherein the second flow cell comprises a second negative electrode and a second positive electrode, wherein each sub-stack is coupled to a separate electrolyte feed, such that each sub-stack receives electrolyte independently from all other sub-stacks. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for an all-iron hybrid flow battery, comprising:
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a redox electrolyte tank including a redox electrolyte; a plating electrolyte tank including a plating electrolyte; and a power module coupled to the redox electrolyte tank via a first pump and further coupled to the plating electrolyte tank via a second pump, the power module comprising an internally manifolded flow cell stack, the internally manifolded flow cell stack comprising; two or more electrolyte feeds connected to the redox electrolyte tank and/or the plating electrolyte tank; a first sub-stack comprising at least one first flow cell coupled to a first electrolyte feed, wherein the first flow cell comprises a first negative electrode and a first positive electrode; and a second sub-stack comprising at least one second flow cell coupled to a second electrolyte feed, wherein the second flow cell comprises a second negative electrode and a second positive electrode, where the first sub-stack further comprises; one or more flow cells coupled to the first electrolyte feed, the one or more flow cells having similar voltages, the voltages being significantly different from a voltage of the at least one second flow cell of the second sub-stack, wherein the one or more flow cells comprise; a first flow field; and a polymeric frame, comprising;
a top face;
a bottom face, opposite the top face;
a first side;
a second side, opposite the first side;
a first electrolyte inlet located on the top face and the first side of the polymeric frame;
a first electrolyte outlet located on the top face and the second side of the polymeric frame;
a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet; and
a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet,
wherein the first electrolyte inlet flow path wraps around a first side, a second side, and a third side of the first flow field.
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21. A system for an all-iron hybrid flow battery, comprising:
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a redox electrolyte tank including a redox electrolyte; a plating electrolyte tank including a plating electrolyte; and a power module coupled to the redox electrolyte tank via a first pump and further coupled to the plating electrolyte tank via a second pump, the power module comprising an internally manifolded flow cell stack, the internally manifolded flow cell stack comprising; two or more electrolyte feeds connected to the redox electrolyte tank and/or the plating electrolyte tank; a first sub-stack comprising at least one first flow cell coupled to a first electrolyte feed, wherein the first flow cell comprises a first negative electrode and a first positive electrode; and a second sub-stack comprising at least one second flow cell coupled to a second electrolyte feed, wherein the second flow cell comprises a second negative electrode and a second positive electrode, where the first sub-stack further comprises; one or more flow cells coupled to the first electrolyte feed, the one or more flow cells having similar voltages, the voltages being significantly different from a voltage of the at least one second flow cell of the second sub-stack, wherein the one or more flow cells comprise; a first flow field; and a polymeric frame, comprising;
a top face;
a bottom face, opposite the top face;
a first side;
a second side, opposite the first side;
a first electrolyte inlet located on the top face and the first side of the polymeric frame;
a first electrolyte outlet located on the top face and the second side of the polymeric frame;
a first electrolyte inlet flow path located within the polymeric frame and coupled to the first electrolyte inlet; and
a first electrolyte outlet flow path located within the polymeric frame and coupled to the first electrolyte outlet,
wherein the first electrolyte inlet flow path wraps around a first side, a second side, and a third side of the first flow field, andwherein the one or more flow cells further comprise;
a first inlet flow manifold located within the polymeric frame and coupled between the first electrolyte inlet flow path and the first flow field; and
a first outlet flow manifold located within the polymeric frame and coupled between the first electrolyte outlet flow path and the first flow field,
wherein the first inlet flow manifold comprises one or more junction stages and a series of manifold distribution channel sets fluidly coupling the junction stages.
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Specification