Motive System Fuel Cells TRIZ Cases
- Fuel Cell Output Threshold Control for Flooding and Overcooling
Dynamic output threshold control uses stack state and ambient conditions to prevent flooding, dryness, and poor winter starts.
- Fuel Cell Output Control Using Real-Time Cooling Capacity
Actual cooler capacity is used to cap fuel cell output before coolant overheating, improving stable vehicle operation in changing ambient conditions.
- Metal-Supported SOFC Segments Without Heavy Bipolar Plates
Side-by-side metal-supported SOFC segments replace heavy bipolar plates, boosting gravimetric power density while maintaining strength.
- Fuel Cell Stack Gas Passage With Hydrophilic Water Discharge
A hydrophilic inner passage in a fuel cell stack helps generated water aggregate and drain before freezing blocks reactant gas discharge.
- Fuel Cell End Plate Access Structure for Flow Shaft Maintenance
A removable main end-plate section and independent auxiliary compression enable flow shaft inspection and cleaning without losing stack sealing.
- Power Transmission Unit Duty-Cycle Control for Small Inductor Current
Dual-switch duty-cycle adjustment stabilizes small inductor current in fuel cell buck-boost power transmission units.
- Fuel Cell Stack Power Distribution Under Irreversible Failure
Dynamic stack-level power allocation stops failed fuel cell stacks and redistributes demand to maintain output and extend durability.
- Fuel Cell Stack Switching for Voltage Control Without Dump Loads
Dynamic stack bypass and reconnection keep fuel cell voltage in range, protect inverters, and avoid dump load resistor weight.
- Fuel Cell Water Draining via Bypass Suction to Prevent Freezing
Bypass pipes and a suction pump drain residual water from fuel and oxidizer paths to prevent freezing with lower power use and less electrolyte oxidation.