High-precision Battery Test System Based on 24-bit ADC

摘要：

This paper presents an intelligent secondary battery test system based on a 24-bit high-resolution ADC aDS1211. We adopt ultra-high precision voltage reference AD780 and 24-bit ADC ADS121 to ensure highprecision measurement. The system utilizes a microcontroller to intelligently set the parameters of channel state control circuit,switch charge-discharge mode,switch voltage and current feedback control voltage and current sampling,test internal resistance of a battery cell,measure the ambient temperature,etc. This system achieves the functions of testing rechargeable battery,including constant current charge,constant voltage charge,constant current discharge and static performance,and the high precision measurement of secondary battery parameters. Furthermore,based on the test result we can analysis the comprehensive performance of the secondary battery and achieve a reasonable battery match to play the best performance. The main characteristics of the system are simple circuit,low cost,multi-function and high precision.

关键词： battery testing internal resistance testing 24-bit ADC ADS1211 AD780.

作者: Ruijie Shen Rujun Chen Zheyuan Huang

作者单位: School of Info-physics and Geomatics Engineering,Central South University,Changsha 410083,China School of Info-physics and Geomatics Engineering,Central South University,Changsha 410083,China Post

会议类型: 国际会议

会议名称: 2009 9th International Conference on Electronic Measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI2009)

会议地点: 北京

会议语种:英文

页码: 867-872

在线出版日期: 2009-08-16（万方平台首次上网日期，不代表论文的发表时间）