Crimped positioning openings align bipolar plate halves with one tool, improving welding accuracy and reducing leaks and thermal damage.
Integrated oxidant, fuel, and coolant channels in metal bipolar plates cut stack weight, simplify manifolds, and improve cooling uniformity.
A spaced bypass stopper and metal bead let the seal deform under compression, improving seal pressure and blocking reactant gas leakage.
Compensating regions in bipolar plate flow fields absorb MEA thickness variation, reducing separator plate damage under dynamic load.
A waveform porous body with zigzag flow holes prevents diffusion-part clogging, reducing pressure loss and improving fuel cell gas distribution.
A compliant layer and coated peripheral seal reduce thermal stress and electrical disconnection between the stack and manifold plate.
A composite anode flow field with hydrophilic and hydrophobic layers improves water recirculation, lowers resistance, and reduces fuel cell flooding.
Regional duct patterns and hydrophobic or hydrophilic surfaces improve gas distribution, water drainage, and current density in electrochemical cells.
A pointed bypass stopping element compresses the membrane electrode assembly at the flow-field edge to block reactant bypass and leakage.
Preformed protrusions beside the separator bead stop liquid rubber from flowing during curing, improving gasket shape control and yield.
A thin carbon layer over a controlled oxide film helps fuel cell separators resist corrosion while keeping low contact resistance.
A shaped sacrificial separator region near the coolant manifold spreads electrolytic corrosion, extending fuel cell stack life at lower cost.
Offset elevations create direction-dependent coolant flow in bipolar plates, pushing water into corner areas to reduce temperature peaks.
Doped conductive silicon plates integrate current collection and cooling channels to cut fuel cell plate cost, corrosion, and stack complexity.
Differentiated separator contact pressures fix the resin-framed MEA, suppress fluid leakage, and protect the membrane during stack compression.
Metal sensing terminals engage separator recesses during insertion, simplifying fuel cell stack mounting and preventing terminal detachment.
A bent positioning surface cuts guide-bar friction during fuel cell stacking, limiting separator deformation while keeping alignment accurate.
Interlocking separator protrusions suppress bead deformation under compressive load, preserving fuel cell gasket sealing while reducing welding steps.
By keeping the electrode-frame overlap inside the flow field section, this fuel cell clears buffer flow paths and cuts reactant gas pressure loss.