The 200+kW commercial vehicle hydrogen fuel cell engine adopts an integrated design of innovative technology. It has ultra-high system power density and long service life. It can meet the high and low temperature requirements of all operating conditions and is more suitable for long-distance and heavy-duty application markets. Technical characteristics: High efficiency-the operating point of the stack is shifted to a high-efficiency area, improving the efficiency of system accessories, including air compressors with expanders, high-efficiency DCDC, etc.; high durability-system accessories have longer life, especially humidifiers, air compressors, etc., at the same time, system control software more suitable for fuel cell applications has been developed to ensure system life; high integration-simplified system design, adopting new integration concepts, and integrated design; Low cost-Build a cost project to evaluate technology in multiple dimensions such as system design, integration, material selection, and processing technology to achieve cost reduction; Low noise-Improve NVH performance of air compressors, water pumps, and hydrogen circulation pumps and noise reduction of intake and exhaust gases, to meet customer comfort requirements.