直流充电法测量锂离子电池内阻
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摘要
为保证锂离子电池的安全使用,需对其性能进行在线测量,而内阻是判断电池性能好坏的重要参数之一。通过对传统的交流注入法与脉冲放电法优缺点进行分析,提出一种可以在线测量且简单方便的直流充电法,并将该方法计算出的预测值与实际值进行比较实验。检测结果表明,该方法能够计算出较高精度的电池内阻。
In order to ensure the safety of lithium ion batteries, it is necessary to measure the performance online, and the internal resistance is one of the important parameters to judge the performance of battery. By comparing the advantages and disadvantages of the traditional AC injection method and the pulsed discharge method, a simple DC current charging method was proposed, and the estimated value based on the proposed method and the actual value were compared. The results show that the method can accurately calculate the resistance of a battery.
In order to ensure the safety of lithium ion batteries, it is necessary to measure the performance online, and the internal resistance is one of the important parameters to judge the performance of battery. By comparing the advantages and disadvantages of the traditional AC injection method and the pulsed discharge method, a simple DC current charging method was proposed, and the estimated value based on the proposed method and the actual value were compared. The results show that the method can accurately calculate the resistance of a battery.
引文
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[2]CHEN Z,FU Y,MI C C.State of charge estimation of lithium ion batteries in electric drive vehicles using extended Kalman filtering[J].IEEE Transactions on Vehicular Technology,2013,62(3):1020-1030.
[3]XU L,WANG J,CHEN Q.Kalman filtering state of charge estimation for battery management system based on a stochastic fuzzy neu-ral network battery model[J].Energy Conversion&Management,2012,53(1):33-39.
[4]王双双,李新峰,张沿江,等.内阻差异对锂离子电池性能的影响[J].安徽大学学报:自然科学版,2016,40(2):49-53.
[5]魏学哲,杨静,刘耀锋,等.锂离子动力电池内阻模型与实验研究[J].同济大学学报:自然科学版,2015,43(10):1542-1549.
[6]赵艳玲.动力锂电池BMS中内阻在线测试的设计[J].能源与节能,2015(8):118-119.
[7]徐晶.梯次利用锂离子电池容量和内阻变化特性研究[D].北京:北京交通大学,2014.
[8]李学哲,封孝辉,张有东,等.动力锂电池劣化失效评价方法及系统的研究[J].煤矿机械,2016,37(1):219-221.
[9]MARTEMIANOV S,ADIUTANTOV N,EVDOKIMOV Y K,et al.New methodology of electrochemical noise analysis and applications for commercial Li-ion batteries[J].Journal of Solid State Electrochemistry,2015,19(9):2803-2810.
[10]朱顺良,谢先宇,王侃,等.不同工况环境下动力锂电池内阻测试研究[J].上海汽车,2016(1):3-6.