Simulation Research On Electric Vehicle Performance With The Dynamic Characteristics Variety Of Energy Storage System

With rising oil prices, the depletion of energy in today's world ,people are increasingly concerned about environmental protection and energy issues, energy conservation has become the main direction of automotive technology, so the new energy vehicles in the automotive industry, become the only way to grow, while the pure electric Auto is an important part of the development of the new-energy vehicle in the energy-saving and environmental protection at this stage. At the process of improving the performance of electric vehicles (EVS) and gradually moving towards industrialization for the EVS, There are two issues to address urgently, namely, How to increase energy reserve and how to enhance the utilization rate. Considering the R & D funding and the development cycle, using computer simulation model to simulate the performance of electric vehicles is very meaningful.According to the function developed by Harbin Institute of Technology, Institute of prototype performance requirements and conditions of use, focus on the effects of energy storage system performance parameters of the pure electric vehicle on the vehicle dynamic performance and driving range. The energy storage system applying to the pure electric vehicle has five main indicators (specific energy, specific power, cycle life, cost and security) which contain each other.The mutual containment issue among the performance indicators is one of the main reasons that vehicle system design problem is difficult to do. At the same time, the coupling degrees between the powertrain components'parameters of automotive vehicles are very large, namely, there are great contradictions between the coupling parameters of the automotive vehicle, for example, this argument become well, and other arguments may have sent. So it is very necessary that make simulation and analysis use the special simulation software.According to operating characteristics of the current electric vehicle energy storage system and methods of building a simulation model, this paper make use of ADVISOR simulation software, based on performance parameters of the different energy storage systems ,and modeling. Three simulation forms of electric buses which were powered by the group of super-capacitors, lithium-ion Ni-MH battery pack seperately were set up; Aim for comparation of the performances of vehicle simulation in different road conditions, analysis of effects of different storage energy systems on dynamic performance parameters of the complete vehicles, driving range and equivalent fuel economy per 100km to to improve performance of the vehicle.Finally, the equivalent fuel economy per 100km of the three forms of electric vehicles were analyzed and compared in the same conditions. Dynamic performances and driving range of three electric passenger vehicles which are assembled with defferent power sources were analyzed. Considering the cost price of energy storage systems, super capacitor electric buses arrive at more cost-effective than nickel-metal hydride batteries and lithium-ion battery electric vehicle simulation models.The studies on vehicle simulation performances demonstrate the rationality of the vehicle simulation models and the feasibility of the overall design of electric passenger vehicles, and the thesis improves the theoretical basis for the future of electric vehicle simulation of complex power.