Development and evaluation of in-situ instrumentation for cylindrical Li-ion cells using fibre optic sensors
Development and evaluation of in-situ instrumentation for cylindrical Li-ion cells using fibre optic sensors
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DOI：
10.1016/j.ohx.2018.04.001
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发表时间：
2018-04-01
期刊：
影响因子：
2.2
通讯作者：
Bhagat, Rohit
中科院分区：
文献类型：
--
作者：
Fleming, Joe;Amietszajew, Tazdin;Bhagat, Rohit
这项工作展示了光纤光栅传感器技术的发展和评估，用于监测圆柱形18650锂离子电池的分布式原位工作温度。使用EIS、CT扫描和电池循环表征评估了传感元件对电化学系统的影响，并证明其可忽略不计。此外，FBG传感器被证明能够抵抗电池仪器化过程中施加的应变和锂离子电池内部的恶劣化学环境。在这项工作中开发的感测方法和修改技术可以应用于大规模电池模块和电池组系统，并集成在电池制造过程中。这项工作确定了电池罐和核心温度之间的明显差异，放电时高达6 ℃，充电时高达3 ℃，以及轴向温度梯度。本研究的结果对储能系统的性能和安全极限具有重要意义。这篇文章指出了对可靠的传感系统的明确需求，这些系统能够对锂离子储能系统进行准确的现场监测。(C)2018作者出版社：Elsevier Ltd
This work demonstrates the development and evaluation of FBG optical fibre sensor technology for monitoring the distributed in-situ in-operando temperature of cylindrical 18650 lithium-ion cells. The influence of the sensing element on the electrochemical system was evaluated using EIS, CT scanning and cell cycling characterisation and was proven to be negligible. Furthermore, the FBG sensors were proven to be resistant to the strain imposed during the cell instrumentation procedure and the harsh chemical environment inside the Li-ion cells. The sensing methodologies and modification techniques developed in this work can be applied to large scale battery modules and pack systems and integrated within the cell manufacturing process. This work identified a clear and significant difference between the cells can and core temperatures of up to 6 degrees C at discharge and 3 degrees C at charge, as well as axial temperature gradient. The findings of this study are of significance to the performance and safety limits of energy storage systems. This article indicates the clear need for reliable sensing systems that enable accurate in-situ in-operando monitoring of lithium-ion energy storage systems. (C) 2018 The Authors. Published by Elsevier Ltd.