Simulation and Testing Research on Thermodynamic Performance of Fuel Cell Vehicles

The environmental adaptability of fuel cell vehicle is a technical problem restricting the commercialization promotion. This paper uses the method of combining theoretical analysis and vehicle test to analyze the thermodynamic performance of the vehicle at different temperatures, and constructs the low-temperature cold start model and heat balance model of the fuel cell system, so as to accurately restore the output power characteristics and temperature characteristics of the fuel cell system in the low-temperature cold start process and high-temperature heat balance process. It provides a reference for the environmental adaptability analysis and optimization of fuel cell vehicles. The vehicle test results show that the established simulation model can better reflect the output state of fuel cell, and the temperature error of fuel cell system is less than 1 °C, which provides a reference for the analysis and optimization of fuel cell environmental adaptability in the process of vehicle development, and has strong engineering practical significance.