Reactant Parameters Control TRIZ Cases

Uses the host unit's electrical power to run mobile hydrogen compression and dispensing, cutting refueling complexity and remote-site cost.

An actively controlled inlet valve lets fresh hydrogen enter without triggering recirculation and blocks reverse flow through inactive jet pumps.

A combined heat exchanger and separator in the fuel cell conduit vaporizes water, prevents blockages, and saves installation space.

By inferring excess flow valve closure from hydrogen use and pressure drop, the controller restores supply and avoids fuel cell shutdown.

Parallel ejector branches switch recirculation by power level, cutting pump complexity, power use, and control hysteresis in fuel cells.

Pumped, expanded liquid hydrogen lowers tank pressure, limits boil-off, and drives a turbine generator to charge the battery.

Cobalt-free, nickel-free oxide getters capture chromium vapor in SOFC exhaust, reducing cathode degradation and extending cell life.

Secondary channels and land injectors feed reactant into the gas diffusion layer to smooth oxygen distribution and limit PEM fuel cell flooding.

Ore-derived Fe-Cr electrolyte preparation removes metal impurities and limits hydrogen evolution to preserve storage capacity over cycling.

By tuning aluminum particle size, pressure, and hydrogen flow, this fuel cell matches changing power demand for off-grid charging roads.

A mining haul truck retrofit redistributes batteries, hydrogen storage, and fuel cells to fit existing chassis space and speed hydrogen deployment.

A self-supporting polymer liner protects a fuel cell manifold from phosphoric acid while accommodating thermal expansion and simplifying assembly.

A dual Fe-Cr flow battery arrangement adds peak power support while balance control restores capacity and reduces hydrogen generation.

Warm exhaust gas is recirculated to the mixing chamber to stop BMS icing in liquid hydrogen tanks without adding counterpressure.

Arch-like flow channels and multiple apertures let hermetic cell assemblies keep power output while improving sealing and energy conversion efficiency.

Offset merging and a downstream bend mix recirculated off gas with fresh fuel, shrinking the layout while keeping hydrogen distribution uniform.

A reflective float lets a non-contact sensor track electrolyte level continuously despite transparent liquid and surface turbulence.

Excess hydrogen is routed into reserve tanks through pressure and valve control, avoiding atmospheric release when fuel cell demand drops.

Extended edge seal baffles create pressure drop for even gas flow, reducing thermal gradients, stack distortion, and contact loss.

Multiple collection regions, discharge ports, and a compensation channel let a fuel cell drain water and purge gas in any operating position.

Blocking CO in the anode chamber during hot shutdown, then purging after cooldown, prevents nickel tetracarbonyl escape and anode oxidation.

Electrical pulses regenerate degraded organic negolyte species in flow batteries, reversing capacity loss and extending cycle life.

Dynamic valve pressurization time and torque keep the fuel cell cathode airtight after shutdown, limiting hydrogen exhaust and stack deterioration.

State-of-charge sensing and anolyte/catholyte flow regulation balance shared-electrolyte battery strings with less converter complexity.

Sculpted inlet and outlet connectors remove plate transition regions to improve flow uniformity, power density, and water management.

Model-based pressure estimation from ejector and valve states keeps fuel cell hydrogen supply stable when pressure sensors drift or fail.

Alternating oxygen and hydrogen purge valve timing avoids combustible gas overlap, removing the need for inert gas and impurity filters.

Hydrogen tanks are arranged beneath battery and fuel cell components to absorb impact loads, cutting case weight while improving vehicle safety.

An upstream secondary safety device limits excess hydrogen flow before the pressure reducer, protecting fuel cell valves from overpressure and jamming.

Available truck volumes are repurposed for hydrogen tanks, fuel cells, and batteries to speed zero-emission haul truck retrofits.

Stored compressed air is switched with outside air based on tank pressure, cutting fuel cell energy use and cost in large vehicles.

Anode-to-cathode pressure transfer and stored compressed air help fuel cells meet sudden load increases without oxygen undersupply or added degradation.

Startup airflow is adjusted from fuel gas leakage detection to dilute hydrogen safely and shorten fuel cell stack activation time.

Pressure-based switching between external and internal fuel suppliers keeps fuel cell operation stable without enlarging injector solenoids.

Limiting-current measurements replace drift-prone reference electrodes to track redox flow battery state of charge and support electrolyte rebalancing.

Centrifugal gas-liquid separation removes compressor metal debris before air enters the stack, preserving fuel cell performance and lifetime.

Elastic sealing material on the flap edge keeps fuel cell gas channels closed despite tolerances and thermal dimensional changes.

A sub-60 V rear-mounted fuel cell preserves cabin space, lowers center of gravity, and avoids extra crash protection complexity.

A single plenum, split ducts, and flexible seals simplify multi-fuel-cell air intake packaging while maintaining dedicated filtration.

An insulating joint tube with a hollow protrusion breaks the conductive water path between a fuel cell stack and humidifier.

A modular bogie-mounted powerpack places fuel tanks beside fuel cells to shorten high-pressure lines, improve safety, and simplify maintenance.

Released tank hydrogen is sorbed and catalytically converted to water, lowering vented hydrogen concentration and explosion risk without external heating.

A shared motor and magnetic couplings drive air, coolant, and anode gas flow while reducing lubricant contamination and hydrogen leakage.

A bogie-mounted power pack integrates the fuel cell and tank to remove inter-car fuel lines, improve collision behavior, and free passenger space.

Press-fit metal flanges, a dielectric tube, and snap rings maintain a hermetic fuel seal while managing thermal expansion and electrical isolation.

Dynamic power allocation across multiple fuel cell stacks matches dispenser demand while limiting output to reduce membrane degradation and maintenance.

An integrated closure cover redirects recirculated hydrogen to the anode inlet with lower pressure loss, fewer joints, and less leakage risk.

A heat exchanger and thermal engine warm liquid hydrogen for aircraft use while recovering the temperature difference as onboard power.

A slip-stream exhaust unit removes excess CO2 from carbonate fuel cell exhaust, enabling reuse while retaining a hydrogen-containing stream.