Comprehensive Evaluation And Research Of The Electric Vehicle Dynamic Economy

With the application of electric cars, higher and more specific requirements ofelectric cars to evaluate the performance have been put forward. Theperformance requirements Aimed at the performance characteristics of electricvehicles, and the characteristics of the user requirements, is not high. Electric carare often defined as family second urban off-road vehicles, The performancerequirements is easy to satisfy; Travel distance of economy, especially indicatorsmore attention, to ensure the daily travel. And traditional power performance,economic evaluation methods lack of user survey of working condition, as well as tothe performance comprehensive evaluation method. On the other hand, the lack ofeconomic evaluation method of the electric car widely adopted the test method ofthe traditional economy car, lack of energy consumption analysis methodologies forelectric cars. Therefore, proposes a economic evaluation method based on electricvehicle energy consumption analysis, comprehensive evaluation method, as wellas the performance and fuel economy performance evaluation of electric vehicle,and the vehicle performance, and improve the improve the use of recognition anddriving experience has important significance.This paper introduces the electric energy consumption characteristics and themechanism of energy loss analysis, and of which the key factors about the electriccar economy is analyzed and summarized. Respectively from the Angle of thevehicle parameters and economical test plan two aspects analyzes the maininfluence factors, the vehicle energy consumption analysis model is established,and tracking the latest electric car in the world economy evaluation method. Andthen put forward the electric vehicle power performance and economycomprehensive evaluation method, including driving cycles, the evaluation indexselection, as well as the evaluation indexes weights. Finally, based on the twotarget vehicle in the form of simulation of power performance, economy has madethe comprehensive evaluation. To be more accurate, more complete, and reflect user needs assessmentperformance of electric vehicle, there are mainly three key factors: first, the energyconsumption of the electric car and loss mechanism analysis; Second, the testcondition of reasonable formulation; Third, the comprehensive evaluation ofperformance and fuel economy. After analyzing the situation of the electric vehicleperformance test methods at home and abroad, this paper comprehensiveperformance evaluation of electric vehicle mainly for three aspects work.In the electric car energy consumption analysis based on the study of themechanism, focus on tracking the efficiency of the electric car test method, aparticular focus on the latest general light vehicles test program in the world,analyzed the characteristic values of the test conditions and characteristics of areput forward according to the practice of test condition has carried on the simulationof vehicle fuel economy.According to the configuration characteristics of the electric car, the powerconsumption stream flow, especially the loss of power system components areanalyzed, and has set up a vehicle model for the loss characteristics of the system,clear for ev economy influence factors provides a theoretical basis.In electric vehicle power performance and economy comprehensive evaluation,to select the power performance and fuel economy of the indicators, and putforward the method is determined based on the entropy value method to determinethe weights, finally select target models made a validate the feasibility of themethod.Through verification shows that the valuation methods that can be applied tovehicle performance index of power and economic performance of the electricvehicle are put forward.