Why has the integrated hydrogen circulation system become the key guarantee for the stable operation of fuel cell engines?
Publish Time: 2025-05-26
During the operation of fuel cell engines, the performance of the hydrogen supply system directly affects the efficiency, life and safety of the entire power system. Since the hydrogen on the anode side is always in excess, and the water molecules generated on the cathode side continue to migrate to the anode, the water balance control becomes extremely complicated. If hydrogen is discharged directly, it will not only cause a waste of resources, but also pose a safety hazard; and too much or too little water will have a negative impact on the fuel cell stack and even affect its normal operation.
In this context, the emergence of the integrated hydrogen circulation system provides an efficient and stable solution to this problem. It can not only achieve efficient recycling of hydrogen, but also accurately control the humidity environment on the anode side, thereby ensuring the long-term stable operation of the fuel cell.
The system integrates multiple key components such as hydrogen injection/proportional valve, ejector, shut-off valve, pressure limiting valve, water separator, drain valve, etc. Through a highly integrated design concept, the entire hydrogen circulation process is more coordinated and smooth. This integrated structure not only improves the response speed and control accuracy of the system, but also greatly reduces the number of pipeline connection points, reduces the risk of leakage, and enhances the safety of the overall operation.
In terms of hydrogen management, the system can dynamically adjust the hydrogen flow rate according to the actual power demand of the engine to ensure that the hydrogen supply pressure and flow rate are maintained in the optimal range. At the same time, through the efficient ejector design, the system can realize hydrogen circulation without moving parts, reduce energy consumption and improve reliability. This intelligent adjustment mechanism effectively avoids hydrogen waste, improves hydrogen utilization, and has a positive impact on the vehicle's endurance.
In terms of water management, the system is equipped with a high-efficiency water separation module, which can quickly separate liquid water and water vapor in the anode tail gas, and discharge excess water in time through the automatic drainage function. This not only prevents the "flooding" phenomenon caused by water accumulation, but also avoids the performance degradation of the proton exchange membrane due to drying, thereby extending the service life of the fuel cell stack.
In addition, the system has the characteristics of small size, light weight and high integration, which is very suitable for new energy vehicle platforms with limited space. Its compact structure is also easy to install and maintain, further enhancing the flexibility of vehicle manufacturers in fuel cell system integration.
Since its launch, the integrated hydrogen circulation system has been widely used in multiple fuel cell vehicle models and energy systems with its excellent performance and stable working characteristics, and has won high praise from customers. Its successful application not only marks that my country has achieved a technological breakthrough in the field of key fuel cell components, but also lays a solid foundation for the large-scale development of the hydrogen energy industry.
It can be said that the integrated hydrogen circulation system has become one of the indispensable core components of modern fuel cell engines. It has shown irreplaceable advantages in improving system efficiency, ensuring safe operation, and optimizing resource utilization, and is an important supporting force for promoting the maturity and popularization of hydrogen energy technology.
