Design of Battery Management System

摘要

Power battery is the core component of the electric vehicle, but its performance is often restricted by equilibrium and temperature conditions. In order to solve those problems, a new type of battery management system was developed. In terms of whole structure, the master slave distributed design scheme was adopted. In aspects of hardware, the battery monitoring circuit, communication circuit and protection circuit were designed. In terms of software, the balance, temperature control strategy and the SOC estimation strategy based on cloud platform neural network were used. At the same time, the man-machine interaction interface of LABVIEW was established, which could display the battery information in real time. Finally, the electronic load was served as the load to simulate the ideal working conditions. The results show that the collected voltage and temperature information is accurate, the system response is rapid, and the SOC estimation error is controlled less than 5%.