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Lithium-ion battery power degradation modelling by electrochemical impedance spectroscopy

机译:锂离子电池功率降级的电化学阻抗谱建模

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摘要

This study investigates the use of the electrochemical impedance spectroscopy (EIS) technique as an alternative to the DC pulses technique for estimating the power capability decrease of lithium-ion batteries during calendar ageing. On the basis of results obtained from calendar ageing tests performed at different conditions during 1-2 years, a generalised model that estimates the battery power capability decrease as function of the resistance Rs increase (obtained from EIS) was proposed and successfully verified.
机译:这项研究调查了电化学阻抗谱(EIS)技术作为直流脉冲技术的替代方法,用于估计日历老化期间锂离子电池的功率能力下降。根据在1-2年内在不同条件下进行的日历老化测试获得的结果,提出并成功验证了估算电池功率随电阻Rs增大而降低的通用模型(通过EIS获得)。

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