The Modeling And Simulation Of HEV Integrated Energy Model

In recent years, energy-saving and environmental protection has become a major issue of all countries in the world. Vehicles take tremendous responsibility for fossil energy consumption and pollution of atmospheric environment. New methods and technologies are studied by many automotive researchers to solve the energy-saving and environmental protection problem for vehicles. Under this background, hybrid electric vehicles (HEV) , due to its good economic performance , low emissions performance, better use of traditional ICE vehicle's existing infrastructure, and other factors, are considered one of the eff(?)ctive solutions.In the modern development of computer technology, the measure of establishing mathematical models and using computers to simulate the actual situation in HEV research, not only can help people to study the various factors on the specific impact of vehicle performance, but also can adjust HEV subsystem design and optimize parameters. Through this method, researchers can reduce development costs and short the product development cycle, meet the current needs of the world the fierce market competition.In the previous vehicle simulation, its focus mainly concentrated in the powertrain area. But in the actual operation of vehicles, auxiliary system (for example, air-conditioning systems, power steering system, brake system, engine cooling system, etc.) consume 9-15% of vehicle fuel consumption. This part of the energy consumption is ignored by previous simulation.Supported by the major project "Research on Control Algorithm and Basis Technology for Electric Vehicles" under "High-Tech R&D Program of China", the HEV integrated energy flow model, which calculates Vehicle auxiliary system energy consumption, has been proposed. On this basis, the study of auxiliary system analysis, HEV vehicle and control strategy parameters performance and optimization and hardware in-the-loop simulation have been carried our. I think this study can provide the necessary theoretical supervise for HEV design and research.