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US 12,749,697 B2Granted
Method and system for dynamically modifying fuel cell stack current to manage fuel cell membrane hydration
AssigneeFord Global Technologies, LLC
InventorsZeng Qiu, Mostafa-Ali Ayubirad, Hao Wang, Majed Ben-Kalefa, Rajit Johri, William Frederick Sanderson, Jr.
Life of this patent
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Abstract
A system includes a fuel cell stack (FCS) and a controller. The controller is configured to, in response to a stack current request corresponding to a stack current of the FCS which would cause a membrane hydration level of the FCS to be outside of a desired hydration range, adjust the stack current request to correspond to an adjusted stack current of the FCS which causes the membrane hydration level to be maintained within the desired hydration range.
Claims13
A system comprising:
- a fuel cell stack (FCS);
- and
- a controller configured to, in response to a stack current request corresponding to a stack current of the FCS which would cause a membrane hydration level of the FCS to be outside of a desired hydration range, adjust the stack current request to correspond to an adjusted stack current of the FCS which causes the membrane hydration level to be maintained within the desired hydration range;
- and
- wherein the controller adjusts the stack current request so that the corresponding adjusted stack current varies slower in comparison with the stack current corresponding to the stack current request.
2 more elements
A system comprising:
- a fuel cell stack (FCS);
- and
- a controller configured to, in response to a stack current request corresponding to a stack current of the FCS which would cause a membrane hydration level of the FCS to be outside of a desired hydration range, adjust the stack current request to correspond to an adjusted stack current of the FCS which causes the membrane hydration level to be maintained within the desired hydration range;
- and
- wherein the controller adjusts the stack current request so that the corresponding adjusted stack current has a different magnitude in comparison with the stack current corresponding to the stack current request.
2 more elements
A vehicle comprising:
- a traction battery;
- a fuel cell stack (FCS);
- and
- a controller configured to, in response to a stack current request corresponding to a stack current of the FCS which would cause a membrane hydration level of the FCS to be outside of a desired hydration range, adjust the stack current request to correspond to an adjusted stack current of the FCS which causes the membrane hydration level to be maintained within the desired hydration range and control the traction battery according to the adjustment of the stack current request;
- and
- wherein the controller adjusts the stack current request so that the corresponding adjusted stack current varies slower in comparison with the stack current corresponding to the stack current request.
3 more elements
Dependencies are inferred from the claim text.