Study On The Subsidy Policy Of Electric Vehicle Industry Chain Based On Three-party Game Model

China's electric vehicles industry has entered the stage of rapid development,but it is still confronted with some constraints,including high price of products,insufficient market demand and charging infrastructure,which cause great challenges to electric vehicle industry.Subsidy policy has played an active and crucial role in promoting the growth of demand for electric vehicles.However,the current electric vehicle allowance policy remains relatively simple and partial,which seriously affects the efficiency of subsidies.Furthermore,it will reduce the government's efforts to support the electric vehicle industry,and even hurt China's development strategy of new energy vehicles.Therefore,it is very important to make better use of electric vehicle subsidy policy to promote consumers' acceptance and recognition of electric vehicles,to encourage the technological innovation,and to upgrade of the electric vehicle industry.To begin with,this paper builds a three-stage Stackelberg model,which involves government,automobile enterprise,charging service provider,and consumers.It tries to find an answer to the optimal amount of government subsidies for electric vehicle and number of charging stations with the help of Matlab.Afterwards,aiming at the government's energy conservation and emissions reduction targets,sensitivity analysis is conducted from 5 parties respectively,which are the government subsidies,electric vehicle charging station quantity,consumers' choice probability of electric vehicle,the electric vehicle price,and charging price.Finally,reasonable suggestions concerning the subsidy policy of electric vehicles are proposed.