Abstract：In order to reduce the loss of electric energy in the process of energy conversion and improve the

energy efficiency of aluminum air battery，an energy efficiency model based on the internal resistance

characteristics of aluminum air battery was established，and the variations of operating conditions（operating

temperature，electrolyte concentration），internal resistance characteristics，output characteristics and energy

efficiency were studied. In order to improve the energy efficiency of aluminum air battery，an improved pollination

algorithm was adopted to obtain the optimal working temperature and electrolyte concentration under constant

current density output. The validity of the model and method was verified by simulation and experiment. The

results show that the energy efficiency can be improved by co-optimizing the operation conditions，and the total

internal resistance can be reduced and the output performance can be improved by increasing the energy efficiency.

      Key words：aluminum air battery；energy efficiency；performance optimization；internal resistance

characteristics；output characteristics