Temperature control strategy optimization for vehicle fuel cell stack under the real road condition

Fuel cell vehicle actual operation condition is relatively complex, fuel cell electric stack is under the major influence of operating conditions, because of dynamic road condition, thermal management is a particularly big design difficulty for the fuel cell passenger cars. It is important to ensure the fuel cell stack's temperature is controlled within a reasonable range under the heavy load work, but it is easy to produce the low temperature in the process of condition switched and in low load, then to result the performance decrease of the fuel cell stack due to the working temperature low, this paper aiming at these problems, has carried on the real road vehicle testing data analysis, and make a optimization using a multidimensional fuzzy control method based on the original water pump control strategy, to improve the water pump control on the adaptability of different working conditions, through the actual road testing, on the premise of guarantee the stack's temperature within a reasonable range, improve the average water temperature of the stack, to obtain the ideal effect, effectively improve the stacks performance in the different kinds of operating conditions for FCEV.