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| Estimating State-of-Charge of Storage Battery Based on Impedance Spectra Technology |
| Hu Yimin1, 2, Feng Guanping1, 2, Liu Yan2 |
| 1. Tsinghua University Beijing 100084 China 2. Research Institute of Tsinghua University in Shenzhen Shenzhen 518057 China |
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Abstract In this paper, alternating current injection method is used to measure the internal impedance of battery, and the state-of-charge (SOC) measurement result by means of ampere-hour integration is used as reference. The study on the internal impedance spectra of one 12V/10Ah valve-regulated lead-acid (VRLA) battery at different SOCs reveales that: the resonance frequency, at which the battery internal impedance switches from a capacitive character to an inductive one, varies monotonously as a function of the SOC. Test results show that: the real-time and rapid estimating of SOC for VRLA battery is possible by means of resonance frequency measurement. Comparing to traditional methods based on impedance spectra, its key characteristics are: ①not have to do time-consuming sweep-frequency analysis needed in traditional impedance spectra measurement. ②not have to accurately measure the internal impedance of battery.
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Received: 21 August 2008
Published: 14 February 2014
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[1] IEEE Std 1188-1996. IEEE Recommended Practice for Maintenance, Testing, and Replacement of Valve-Regulated Lead-Acid (VRLA) Batteries for Stationary Applications[S].
[2] Rodrigues S, Munichandraiah N, Shukla A K. A review of state-of-charge indication of batteries by means of a.c. impedance measurements[J]. Journal of Power Sources, 2000, 87(1):12-20.
[3] Karden E, Buller S, Doncker R W D. A method for measurement and interpretation of impedance spectra for industrial batteries[J]. Journal of Power Sources, 2000, 85(1):72-78.
[4] Karden E, Buller S, Doncker R W D. A frequency domain approach to dynamical modeling of electro- chemical power sources[J]. Electrochimica Acta, 2002, 47(13): 2347-2356.
[5] 王秀菊. 蓄电池内阻同蓄电池各类失效模式的关 系[J]. 电源世界, 2004(4):45-49.
[6] Hariprakash B, Martha S K, Jaikumar A, et al. On-line monitoring of lead-acid batteries by galvanostatic non-destructive technique[J]. Journal of Power Sources, 2004, 137(1):128-133.
[7] 徐艳辉. 商业化锂离子电池的阻抗谱研究[J]. 电源技术与应用, 2003, 6(10):29-32.
[8] 李立伟, 邹积岩. 蓄电池内阻测量装置的研究[J]. 电源技术, 2003, 27(1):42-44.
[9] 刘百芬, 程海林. 一种新型的蓄电池内阻测量方法的研究及实现[J]. 仪表技术与传感器, 2004(5):49-50.
[10] 朱磊, 赵林英, 多智华, 等. 基于LabVIEW实现的电池内阻测试仪[J]. 哈尔滨理工大学学报, 2005, 10(5): 67-69.
[11] Cooper K R, Smith M. Electrical test methods for on-line fuel cell ohmic resistance measurement[J]. Journal of Power Sources, 2006, 160(2):1088-1095. |
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2009, Vol. 24 
