锂离子电池电压在线与离线检测设计  

Design of voltage detection of lithium-ion batteries online and offline

作　　者：郑林锋 姜久春[1] 王占国[1] 马泽宇[1] 马晨[2] 

机构地区：[1]北京交通大学电气工程学院,北京100044 [2]新疆电力公司昌吉电业局,新疆昌吉831100

出　　处：《电源技术》2015年第1期26-29,共4页Chinese Journal of Power Sources

基　　金：国家"863"计划资助项目(2011AA11A246);中央高校基本科研业务费资助项目(2013YJS087)

摘　　要：电动汽车动力锂离子电池电压检测是电池管理系统的关键技术之一,准确的电压检测对锂离子电池的安全性有重要的意义。在分析现有锂离子电池测量方法的基础上,设计了基于BQ76PL536和MAX11081的锂离子电池电压在线和离线检测电路方案,并进行了测量误差、功耗和高低温特性等测试实验。实验结果表明,该方案能实时准确地在线测量电池电压和离线监测电池电压故障,具有体积小、电路设计简单等特点,优化了电池管理系统的结构和功能,提高了电池使用的安全性。The voltage detection of traction lithium-ion batteries for electric vehicles was one of the key technologies of battery management system. It was important to the safety of LIBs with the accurate voltage. On the basis of analysis of existing methods of voltage detection, the scheme that based on the BQ76PL536 and MAX11081 was proposed to detect the LIBs voltage online and offline. The measurement error, power consumption, and high and low temperature properties tests were done. The results show that the LIBs voltage online is measured and the LIBs fault offline is monitored by the scheme exactly in real-time with the features of small size and simple circuit design; the structure and function of the BMS are optimized; and the the safety for LIBs is improved as well.

关 键 词：锂离子电池 电池管理系统 电压检测 BQ76PL536 MAX11081 

分 类 号：TM912.9[电气工程—电力电子与电力传动]