一种用于商用锂离子电池老化表征的间歇电流中断方法
Intermittent current interruption method for commercial lithium ion batteries aging characterization
摘要:
在这篇文章中,提出了一个开创性的研究,其中间歇电流中断的方法来表征商业锂离子电池的老化行为。通过非常资源有效的实施方式,该方法可以在整个充电状态范围内跟踪电池电阻和扩散行为,并且能够确定电池整个寿命期间的老化。此外,增量容量分析可以用相同的数据集进行。该方法可以提供具有高重复性的测量结果,并产生与电化学阻抗谱法相当的信息。在这项研究中,电阻和扩散参数增加与电池容量衰减。这种方法不需要先进的测试设备,即使采用0.1 Hz的采样频率,也可以通过延长中断长度来提取可用的参数。因此,它有可能在电动车辆或固定蓄电池的充电序列中容易地实施,用于老化诊断。
英文摘要:
In this article, a pioneering study is presented where the intermittent current interruption method is used to characterize the aging behavior of commercial lithium ion batteries. With a very resource-efficient implementation, this method can track the battery resistive and diffusive behaviors over the entire state of charge range and be able to determine the aging throughout the lifetime of the batteries. In addition, the incremental capacity analysis can be carried out with the same data set. This method can provide measurement results with a high repeatability and produce equivalent information as the electrochemical impedance spectroscopy method. In this study, both the resistive and diffusive parameters increase with the battery capacity fading. This method does not require advanced test equipment and even with a 0.1 Hz sampling frequency, it is possible to extract usable parameters by prolonging the interruption length. Therefore, it has the potential to be easily implemented in the charging sequence in electric vehicles or stationary storage batteries for aging diagnostics.
机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。