Research And Implementation Of The Battery Management System Simulation Test Platform

New energy technology has been proposed in automotive field due to energy and environmental crisis. Compared with conventional fuel automobiles, new energy vehicles are energy-efficient and environmental. Thus, this technology is paid close attention and developing rapidly in recently years. Development progress of new energy vehicles depends on power battery technology to a great extent. Power battery is one of the most critical components of the development of new energy vehicles. All power battery should be managed by excellent Battery management system (BMS), to improve battery’s lifetime and performance. This dissertation is about the management and detection technology of power battery for new energy vehicles, and this technology is helpful for propelling development and industrialization of new energy vehicles.Based on characteristic of BMS, a simulation test platform for BMS is developed, which consists of host controller and the man-machine interface. The platform’s host controller uses PIC18F4685microcontroller as core chip which has abundant resources. This platform can supply simulative condition signals (such as voltage, current and temperature.) to BMS. The host controller communicates with the measured battery management system through CAN bus. The calibration and monitoring of the analog signals between the host controller and the man-machine interface are implemented by serial communication. At the same time, BMS collects simulated working parameters of the battery and uploads them to the host computer, and then battery management system simulate test platform (BSTP) responds to the preset alarm parameters (fault alarm, thermal management, over-current protection, etc.). The host computer can give test results through comparing data collected by BMS with calibration parameters, so as to achieve the purpose of testing the battery management system’s hardware and software, and improve the efficiency of product test and evaluation.In order to calibrate working parameters of batteries and monitor tested BMS in real time, a man-machine interface is designed based on LabVIEW. The man-machine interface can realize the calibration control, data storage, data analysis, data display of the simulated voltage, current, temperature and so on.At last, the developed BMS is tested by BSTP. Test results show that the platform can calibrate and control to battery simulation signals, with better real-time and reliability, and meets requirements of battery measure. The system can test and evaluate BMS, with a certain application value.