面向耐久性提升的车用燃料电池系统电控技术研究进展

Fuel cell system durability is one of the technical bottlenecks restricting the development of fuel cell vehicles. Vehicle operating conditions are complicated and varied, the operating parameters of fuel cell system like temperature, humidity and pressure, are difficult to control, and the improper handling may aggravate the decay of battery stack. In this paper, from the standpoint of the electric control of automotive fuel cell system, the effects of the fluctuation of operation conditions and parameters on the performance degradation of fuel cell are analyzed, and the composition, structure, controller hardware, control objective and common control strategies of fuel cell system are presented. It is concluded that the energy distribution and power control by power adjustment and onboard energy storage device, combined with model-based control scheme can better achieve the control of operation parameters such as temperature, humidity and pressure, ensuring the fuel cell working in suitable conditions for extending its service life. Finally, the development trends of electric control on vehicular fuel cell system is summarized and forecasted.