| 金属氢化物镍蓄电池SOC估计的EIS研究 |
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| 引用本文： | 吴伯荣,屠海令,王芳,吴锋. 金属氢化物镍蓄电池SOC估计的EIS研究[J]. 电源技术, 2007, 31(1): 41-44,52 |
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| 作者姓名： | 吴伯荣 屠海令 王芳 吴锋 |
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| 作者单位： | 北京有色金属研究总院,能源中心,北京,100088;北京理工大学,环境工程学院,北京,100081 |
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| 摘 要： | 研究了6.5 Ah圆柱形金属氢化物镍(MH-Ni)蓄电池不同荷电状态(SOC)下的电化学交流阻抗谱(EIS),结果表明EIS等效电路的欧姆内阻R6以及电荷转移内阻Rt随着电池SOC增加变化较小,难以用于电池SOC估计;而电池常相位角元件(CPE)参量及特征频率f*与电池SOC之间存在良好的单调依赖关系,可作为MH-Ni电池SOC有效估计的参数.
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| 关 键 词： | 金属氢化物镍蓄电池(MH-Ni) 荷电状态 电化学交流阻抗谱 |
| 文章编号： | 1002-087X(2007)01-0041-04 |
| 修稿时间： | 2006-07-24 |
Study on electrochemical impedance spectroscope for determining the state-of-charge of nickel metal hydride battery |
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| WU Bo-rong,TU Hai-ling,WANG Fang,WU Feng. Study on electrochemical impedance spectroscope for determining the state-of-charge of nickel metal hydride battery[J]. Chinese Journal of Power Sources, 2007, 31(1): 41-44,52 |
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| Authors: | WU Bo-rong TU Hai-ling WANG Fang WU Feng |
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| Abstract: | Electrochemical impedance spectroscopes (EISs) of a 6.5 Ah cylindrical sealed nickel metal hydride (Ni-MH) battery were studied at different state-of-charges (SOCs). The EIS results show that the ohmic resistance R s and the charge-transfer resistance R t of the equivalent circuit change with the increasing of the SOC, can hardly be used for determining SOC of the Ni-MH battery. While the parameters of constant-phase element (CPE) and the eigenfrequency f * of the EISs show good monotonous dependency on SOC respectively, are helpful to determine the SOC of Ni-MH battery. |
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| Keywords: | nickel metal hydride battery state-of-charge electrochemical impedance spectroscope |
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