Study on impedance measurement about lithium ion batteries
Study on impedance measurement about lithium ion batteries
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发表时间：
2010
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通讯作者：
Yang Quan
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作者：
Yang Quan
在研究电池阻抗形成原理和传统锂离子电池阻抗测量技术的基础上，验证了锁相放大器对电池阻抗测量精度的提高。同时，提出了基于不同SOC的直流阻抗谱和基于不同频率的交流阻抗谱的概念。阻抗谱包含了更多关于电池特性的信息，因此在实际测量中优于传统方法。
Based on the study of the principle of battery impedance formation and traditional techniques for measuring the impedance of lithium ion battery,improving of measurement precision for battery impedance with lock-in amplifier was proven.Meanwhile,the concepts of DC impedance spectrum based on different SOC and AC impedance spectrum based on different frequency were presented.Impedance spectrum contains more information about battery characteristics,so it is superior to traditional method in practical measurements.