基于LTC6802的电池组监控平台的电路设计

Circuit design of battery stack monitoring platform based on LTC6802

应用美国Linear Technology公司推出的电池组监控芯片LTC6802,设计了一套可用于锂离子电池组的监控平台。该系统单板可实现对多达12节串联单体电池的监控,可采用分布式结构实现对更多单体的监控。本系统设计实现的功能包括单体电压采集、单体温度采集、电池组被动均衡以及分布式CAN通信等。LTC6802的主要特点在于其电压采集精度高,并具有较高的集成度,在电池应用设备中特别是在纯电动/混合动力汽车中具有良好的应用前景。

In this paper,with application of Linear Technology multi-cell battery stack monitor LTC6802,a Li-ion battery stack monitoring platform was designed.Up to 12 series-connected battery cells could be monitored with a single board,and more cells could be monitored by adopting a multi-board distributed architecture.Several functions including cell voltage detection,temperature detection,battery balancing,and distributed CAN communication could be realized.LTC6802 has very high voltage detection accuracy,is also highly integrated,and has a very promising application prospect especially in EV/HEV industry.