基于Infineon XC2785的电池管理系统采集单元设计

Design of BMS Detecting Unit Based on Infineon XC2785

针对动力电池单体数目较多,位置比较分散的特点,设计了一种基于16位单片机XC2785的电池管理系统采集单元。其中硬件包括基于Infineon XC2785和MAX1321的总电压和母线电流的采集电路、LTC6802-1电池单体电压采集电路、DS18B20电池单体温度采集电路;软件上利用CAN接收中断和Timer中断实现数据采集及处理。该设计硬件电路简单,提高了系统的抗干扰性和稳定性,适用于电池单体数目较多的情况。实验证明,该采集单元能够实现对动力电池组的实时准确监测,具有较高精度。

A detecting unit was designed with the XC2785,which is the 16- bit microprocessor,according to the feature of the large cell number and position dispersion. The hardware system comprises total voltage and current detecting module based on XC2785 and MAX1321,LTC6802- 1 cell voltage detecting module,DS18B20 cell temperature detecting module. It used CAN receive interrupt and timer interrupt realizes data detecting and processing. The hardware is simple,to improve the system anti-interference performance and stability,suitable for the situation which the number of cell is large. Experiments show that the detecting unit can realize an accurate monitoring of power battery.