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提出了一种在锂离子电池制作过程中粘贴镀金光纤布拉格光栅(FBG)传感器的锂离子电池原位检测方法,该方法可用于采集锂离子电池的初始物理量。研究了将镀金FBG传感器埋入锂离子电池的位置及方法,分析了埋入镀金FBG传感器后电池的性能。对锂离子电池进行了充放电实验,并拆封了实验所用的电池样本。实验结果表明,镀金FBG传感器可用于一般环境下的温度采集;锂离子电池中FBG传感器的镀金层遭到腐蚀,导致FBG传感器的波长产生漂移,镀金层避免了裸FBG传感器的结构受到破坏,因此对FBG传感器重新标定后,可采集电池内部的温度。该研究为应用于锂离子电池原位检测的FBG传感器的选择提供了参考。
A lithium-ion battery in-situ detection method for bonding a gold-plated fiber Bragg grating (FBG) sensor during the fabrication of a lithium-ion battery is proposed. The method can be used to acquire the initial physical quantity of a lithium-ion battery. The location and the method of embedding the gold-plated FBG sensor into the lithium-ion battery are studied, and the performance of the battery after the gold-plated FBG sensor is analyzed. The lithium-ion battery was charged and discharged experiment, and unpacked the battery samples used in the experiment. The experimental results show that the gold-plated FBG sensor can be used for temperature acquisition in general environment. The gold-plated layer of the FBG sensor in the lithium-ion battery is corroded, resulting in the drift of the wavelength of the FBG sensor. The gold-plated layer prevents the structure of the bare FBG sensor from being damaged. After the FBG sensor is recalibrated, the temperature inside the battery can be collected. This study provides a reference for the selection of FBG sensors for in-situ detection of lithium-ion batteries.