Dual parameters discrimination comparison between two types of optical fiber sensors during the operation of a Li-ion battery

Lucca C. Matuck; João L. Pinto; Carlos A. F. Marques; Micael S. Nascimento

doi:10.1117/12.2678091

23 May 2023 Dual parameters discrimination comparison between two types of optical fiber sensors during the operation of a Li-ion battery

Lucca C. Matuck, João L. Pinto, Carlos A. F. Marques, Micael S. Nascimento

Author Affiliations +

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126431A (2023) https://doi.org/10.1117/12.2678091
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

In this work, a comparison between the temperature and strain decoupling performed by a bare polarization-maintaining FBG (PM-FBG) sensor and by a hybrid sensing setup, involving the slow peak of the PM-FBG and the fringe shift of the fiber loop mirror (FLM) interferometer (FLM+FBG_slow), was studied and discussed. To promote such comparison, the sensors were submitted to temperature and strain variations at the surface of a cylindrical Li-ion battery (LiB), cycling between 3.0 V and 4.2 V. The data spread of the FLM+FBG_slow indicates a root mean square deviation of ± 0.1 °C and ± 7.8 με, against ± 0.5 °C and ± 9.7 με in PM-FBG, for temperature and strain, respectively. The matrixial method through the sensitivities values of each sensor was used for data processing. Although both sensing configurations showed similar trend behavior of strain and temperature variations during all the experiment, the FLM+FBGslow setup presented better accuracy when compared to the PM-FBGs, however, it could only perform measurements in all the LiB extension, while the PM-FBG could provide data regarding a specific spot of the LiB. The highest temperature and strain variations were achieved in the end of the discharge processes. Keywords: Fiber loop mirror, polarization-maintaining

Citation Download Citation

Lucca C. Matuck, João L. Pinto, Carlos A. F. Marques, and Micael S. Nascimento "Dual parameters discrimination comparison between two types of optical fiber sensors during the operation of a Li-ion battery", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126431A (23 May 2023); https://doi.org/10.1117/12.2678091

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KEYWORDS

Sensors

Fiber Bragg gratings

Batteries

Laser induced breakdown spectroscopy

Spectral response

Fiber optics sensors

Temperature metrology

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