Design for power lithium battery management system of electric vehicle

A kind of battery management system aimed at power lithium battery within electric vehicle is introduced in this paper. First, bottom detection module is discussed, including the voltage measurement module, temperature measurement module and current measurement module. Based on the principle of less hardware overhead and higher sampling and measurement accuracy, the corresponding circuits are well designed. Then this paper gives the software design flow diagram both about slave board and master board. For different hardware environment in another project, so expandability is considered in software design. Test results show that the system functions smoothly with correct status and measurement data and software is stable as well as robust. Moreover, the external LCD could display the state of the system dynamically in real time.