蓄电池内阻在线测量方法的优化  

The Optimization of On-line Measurement Method of Battery Internal Resistance

作　　者：张永超 陈星[1] 万祖岩 Zhang Yongchao;Chen Xing;Wan Zuyan(School of Mechanical Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China)

机构地区：[1]大连理工大学机械工程学院,辽宁大连116024

出　　处：《机电工程技术》2021年第9期58-60,253,共4页Mechanical & Electrical Engineering Technology

摘　　要：随着工业在线监测技术的发展,对于蓄电池内阻在线测量方法不断丰富,对其测量精度的要求也不断提高,基于交流注入测量蓄电池内阻方法,在串联电路分压特征的基础上,结合锁相放大电路在测量精度上对测量方法进行优化,主要优化方法即利用导线电阻和蓄电池内阻的分压关系进行测量,利用锁相放大器进行信号的处理和计算,并通过Matalab对方案进行仿真分析,确定电路对信号的作用和相关参数,同时借助信号发生器、示波器、蓄电池等进行实验验证,得出优化后测量方案的精度。同时进行了测量原理和数据准确性等方面论述,通过实验结果和误差分析验证了方案的可行性,结果证明,电路设计有效地减小了噪声干扰,得到了一种精度更高的蓄电池内阻测量方法。With the development of industrial online monitoring technology,online measurement methods for battery internal resistance are continuously enriched,and the requirements for measurement accuracy are also continuously improved.Based on the AC injection measurement method of battery internal resistance,combined with the characteristics of series circuit voltage division and the lock-in amplifier circuit,the measurement method was optimized in terms of measurement accuracy.The main optimization method was to use the voltage division relationship between the wire resistance and the internal resistance of the battery to measure,the lock-in amplifier was used to process and calculate the signal,and the program was simulated through Matalab to determine the effect of the circuit on the signal and related parameters.At the same time,signal generators,oscilloscopes,batteries,etc.were used to carry out experimental verification to obtain the accuracy of the optimized measurement plan.The measurement principle and data accuracy was discussed,and the feasibility of the scheme was verified through experimental results and error analysis.The results prove that the circuit design effectively reduces the noise interference and finally obtains a higher accuracy battery inside Resistance measurement method.

关 键 词：蓄电池 内阻 测量精度 在线监测 交流法 

分 类 号：TM912[电气工程—电力电子与电力传动]