HIL Simulation Research On Electric Vehicle Battery Charging And Discharging Control Strategy

Electric vehicles because of its notable features and zero emissions by the national automobile industry's favor, all countries have it as the main direction of future automotive development. However, pure electric vehicles the problem of short battery life has been an important factor in distress development of electric vehicles,and its products are a direct result of the process is relatively slow. Pure electric vehicles by the energy storage device, drive systems and vehicle control system has three major components. The charge-discharge control system is the core part of the vehicle control system, in particular a reasonable charge is particularly important for product optimization pure electric vehicles discharge control strategy. However,hardware play an important role in this loop simulation technology in electric vehicle research and development process, the use of hardware in electric vehicle research and development process in the loop simulation technology not only can greatly reduce development costs, but also to avoid the danger caused by the actual vehicle test. Therefore, this article will be a combination of hardware in the loop simulation techniques to study pure electric vehicle charging and discharging control strategy,and in the loop simulation.The pure electric vehicle travel mode and the charge-discharge control strategies in-depth research, mainly to do the work of several of the following areas: First, a brief introduction to the hardware in the loop simulation technology in pure electric vehicle development process development at home and abroad, as well as the existing domestic and foreign mature technology research and development system.Also introduced a pure electric car charging and discharging control strategy of the status quo. Secondly, as used herein, the hardware environment, including driving simulator, PC systems, communications technology, and drive the analog bus systems. And focuses on the communication system to introduce bus selection andcommunication protocols, as well as the drive motor is a simulation system includes a motor and a motor selection working principle in detail. Again pure electric car charging and discharging control strategy is studied in detail, mainly in two aspects,the discharge process is reflected in the process of driving the car, in the process, a detailed analysis of the driver's operation of the electric car to run between relations,on the basis of the current proposed single-loop control strategy as an electric discharge control strategy. The charging process is reflected in electric vehicle braking energy recovery process, combined with the characteristics in the process of fuzzy logic applications, we propose the braking energy recovery based on fuzzy logic control strategy. Finally, in order to visually display the operational status of the electric car and the driver's operation process, this paper LabVIEW software as a development tool for the development of a battery monitoring system for real-time monitoring of running status and battery electric vehicles electric vehicle running state monitoring display system. At the same LabVIEW application communication module communication module in the system is designed. After the above work, the last article in Matlab interface module using LabVIEW co-simulation under different conditions. The simulation results show the designed electric car charging and discharging systems, and hardware in the loop simulation charge and discharge control strategy is reasonable.