As society advanced, environmental pollution and energy consumption have become the two biggest social problems. The automobile industry as the second-largest industrial of global carbon emissions, so that many countries in the world formulate the relevant policies for the auto industry to change the current situation. Our country has clearly put forward in the 13 th five-year plan +:We should implement the new energy automobile promotion plan and improve the level of the electric vehicle industry. But as we all know, currently, the mileage range of electric vehicles is still relatively short due to the limitation of the onboard battery energy density. This causes people’s consuming enthusiasm greatly reduced. In addition, the current infrastructure is not perfect, which also seriously hindered the promotion of new energy vehicles. In the face of the above three problems, people put forward a new model—Extended-Range Electric Vehicles.This paper mainly focuses on the dynamic performance of the extended-range electric vehicles, the research contents are as follows:1. We mainly through the investigation of present situation of extended-range electric vehicle at home and abroad, in order to clarify the characteristics of the extended-range electric vehicle and the advantages of developing the extended- range electric vehicle in our country at this stage.2. By comparing, analyzing and calculating the performance of products related to the key components in power system, and then select the appropriate products for key components. By using the existing theoretical knowledge of automobile and the design goal, the parameters of the power system are matched.3. Based on the results of parameter matching, the key components of the power system are established models in Advisor.4. We research on the control strategy of the extended-range electric vehicle commonly used. Combined with the characteristics of electric sanitation vehicles, we have developed a control strategy that can make the extended-range electric vehicle work on the pure electric mode as much as possible.5. At last, we simulate the dynamic and economic performance of the vehicle by using the simulation software, and compared with the same configuration of the traditional car.6. An optimization scheme is put forward, which is to increase the super capacitor. By improving the existing model,the out current of the power battery is optimized.Through the simulation results of the dynamic and economic performance of the vehicle, we can know that the results obtained from the simulation can basically meet the design objectives. In addition, the effectiveness of the control strategy is verified by the bench test. Finally,the output current of the power battery is optimized by the optimization scheme,and the safety and service life of the battery is improved. |