Recently, the new-generation fuel cell stack independently developed by FAW Jiefang successfully passed third-party authoritative testing and certification by CATARC New Energy Vehicle Test Center (Tianjin) Co., Ltd. The stack achieved breakthroughs in three key dimensions—volumetric power density, -40°C unassisted cold start, and hydrogen utilization rate—with overall performance reaching an industry-leading level.
9.5 kW/L volumetric power density, setting a benchmark for stack miniaturization
Through multiple technological innovations such as metal rib sealing, Venturi-type variable-diameter flow fields, and asymmetric manifold ports, the R&D team achieved a peak volumetric power density exceeding9.5 kW/L(at an average voltage of 0.6 V) and a rated volumetric power density exceeding 8 kW/L (at an average voltage of 0.65 V), setting a new industry performance benchmark. The compact stack body offers excellent platform adaptability, covering the installation requirements of various commercial vehicle and passenger car models, and providing a solid foundation for optimized vehicle layout.
-40°C unassisted rapid start, breaking through extreme cold application bottlenecks
To address the industry pain points of slow startup and insufficient operational stability of hydrogen-powered vehicles in extremely cold regions, the stack adopts a low heat capacity structural design combined with deeply optimized low-temperature control strategies. Under -40°C unassisted heating conditions, cold start response is rapid,and cold start can be completed within 180 seconds with load ramped up to rated power for stable output. This technology effectively resolves the difficulties of starting and operating hydrogen-powered vehicles in low-temperature environments, ensuring vehicle availability in extreme cold scenarios.
99.9% ultra-high hydrogen utilization rate, enabling efficient vehicle operation
The project team reconstructed the anode multi-stage distribution flow field and optimized the matching of the membrane electrode catalytic layer with carbon paper, significantly improving the electrochemical reaction efficiency of the stack at low hydrogen concentrations. The stack can operate continuously and stably in a 60% hydrogen concentration environment, greatly reducing anode hydrogen purge losses,achieving a hydrogen utilization rate of 99.9%. This technology helps reduce vehicle hydrogen consumption and improves operational economy.
The successful passage of third-party authoritative testing for the new-generation fuel cell stack marks an important milestone in FAW Jiefang's independent development of core hydrogen energy technologies. In the future, FAW Jiefang will continue to deepen its focus on key core fuel cell technologies, promote collaborative innovation across the upstream and downstream industry chain, accelerate the transformation of technological achievements into product implementation, continuously improve the hydrogen energy automotive industry ecosystem, and inject strong momentum into the high-quality development of China's hydrogen energy industry.
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