Development of Hardware and Software for On-Board Hydrogen System

The fuel cell engine is considered to be the ultimate technical direction for the development of vehicle power. The on-board hydrogen supply system is important in fuel cell system. However, the on-board hydrogen supply system is diversified, and the management is mostly integrated in the engine controller. Thus, the fuel cell engine controller is excessive coupled with design of on-board hydrogen supply system. In order to improve the portability and compatibility of the fuel cell engine controller, an independent controller of the on-board hydrogen supply system is designed. Meanwhile, the hardware and software are developed to control 35Mpa gaseous hydrogen storage system. After being tested in a high-pressure environment, the controller can detect temperature, pressure and ambient hydrogen concentration of the hydrogen supply system. Simultaneously, it can drive and control the hydrogen cylinder valve. Besides, the controller can communicate with the Campus Area Network (CAN) bus of the fuel cell engine through the CANPro protocol analysis platform software. It is verified that the infrared signal waveform emitted by the infrared transmitting module complies with the software and hardware s of the hydrogen fuel vehicle supply station. Meanwhile, it indicates that the real-time infrared communication between the hydrogen refueling station and the controller is realized as expected. Furthermore, the controller can process and report system errors in time. Based on the results, the designed controller meets the applications requirements of the hydrogen supply system in the bus fuel cell system and improves the portability and compatibility of the hydrogen supply system.