Method and system for representing energy consumption index of electric vehicle

The invention relates to a method and a system for representing an energy consumption index of an electric vehicle. The method comprises the following steps of: acquiring a time-speed curve and a time-direct current energy consumption curve of test working conditions and total alternating current energy consumption of the test working conditions in the process of performing cyclic energy consumption test on the electric vehicle according to the generated test working conditions; determining a direct-current energy consumption rate and an alternating-current energy consumption rate of the electric vehicle under each test sub-working condition according to results of cyclic energy consumption tests; determining driving characteristics of each test sub-working condition according to the time-speed curve of the test working conditions; determining normalized driving characteristics of each test sub-working condition according to the driving characteristics of each test sub-working condition and the reference driv