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On August 10, Jiaxing Degeng Power System Co., Ltd. released the first independently developed hydrogen supply and return assembly at the headquarters. The model of the product released this time is HSE-42-M, which adopts the international mainstream technology route. The combination of electronic hydrogen injection and injection and return hydrogen realizes the hydrogen cycle effect in a wide range of working conditions.

On August 10, Jiaxing Degeng Power System Co., Ltd. (hereinafter referred to as "Degeng Power") released the first independently developed hydrogen supply return assembly in Jiaxing headquarters, and subsequent upgraded products will be put on the market in succession. The HSE-42-M product released this time adopts the international mainstream technology route. The combination of electronic hydrogen injection and injection hydrogen return realizes the hydrogen cycle effect in a wide range of working conditions.

This product is applicable to 30-45kW fuel cell system, and can work normally in the environment of - 20 ℃ to 55 ℃. The rated hydrogen supply flow reaches 450L/min, and the pressure regulation accuracy reaches ± 0.05bar (the accuracy of the next generation product: ± 0.01bar). The ejector is connected in series with the common rail hydrogen injection valve, reaching the industry leading level of 2.0 rated injection equivalence ratio and 10-100% rated power injection range.

The hydrogen supply and return assembly developed by the company is an important part of the anode hydrogen supply system of the vehicle fuel cell engine. It realizes three functions of regulating the hydrogen pressure into the reactor, electronically controlled injection and injecting hydrogen back, so as to ensure the efficient and stable operation of the fuel cell, improve the hydrogen utilization rate and improve the life of the fuel cell.

The product has the following technical features:

FCV dedicated: dedicated to vehicle fuel cell system, integrating multiple functions of pressure regulation, hydrogen injection and hydrogen regeneration;

Mainstream technology route: the combination of electronic hydrogen injection and large equivalent ratio injection hydrogen return meets the requirements of hydrogen cycle in various working conditions;

Higher utilization rate: increase the uniformity of hydrogen pressure in the stack, improve the utilization rate of hydrogen, and improve the humidity environment in the stack;

The current vehicle fuel cell system adopts the technical scheme of hydrogen circulating pump or ejecting and returning hydrogen. The ejecting and returning hydrogen adopts the Venturi working principle, and the simple structure brings the advantages of high reliability, high cost performance, low power consumption and high safety level. The design with three functions of injection and return hydrogen, hydrogen injection and pressure adjustment can meet the requirements of extremely high structural compactness, greatly improving the volume power density of the system and the vehicle space layout. At present, the hydrogen injection and return scheme has been applied to mass production vehicles by most international mainstream automobile enterprises.

The company has established a complete production and testing capacity of 1000 sets of fuel cell hydrogen supply return assembly. The product released this time has been applied to the fuel cell engine system products developed by Degeng Power, and has been highly recognized by peers through long-term vehicle verification of fuel cell cars, buses and logistics vehicles. The company takes continuous innovation to boost the development of the industry as its business philosophy, and continuously introduces high-quality products through continuous iterative research and development.

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