Feasibility Study on the Potential of Fibre Bragg Gratings for Thermal Monitoring of Cylindrical Lithium-Ion Batteries

Alcock, K.; Grammel, Markus; Binetti, Leonardo; González-Vila, Álvaro; Goh, Keng; Alwis, Lourdes S. M.

doi:10.1364/ofs.2020.t3.49

Cited by 1 publication

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“…It is predicted that fibre optic sensor approaches will be one of the most prevalent methods for obtaining battery characteristics, owing to the multiplexing capabilities associated with fibre optics, which allow several measurements to be obtained from a single FOS strand [13][14][15]. Many instances of battery surface temperature measurements utilising the FBG sensor can be found in the literature, where the studies typically make use of tubing of some kind to decouple the strain and temperature observations [16][17][18][19][20][21][22]. Thus, it is evident from the literature that the use of FBGs for temperature measurement is an area of great interest where many researchers have successfully utilised the sensing method for the measurement of lithium-ion battery parameters.…”

Section: Introductionmentioning

confidence: 99%

Individual Cell-Level Temperature Monitoring of a Lithium-Ion Battery Pack

Alcock

González-Vila

Beg

et al. 2023

Sensors

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The work described herein details the deployment of an optical fibre strand with five fibre Bragg grating (FBG) sensors for individual cell-level temperature monitoring of a three-cell lithium-ion battery pack. A polymer guide tube with 3D printed plinths is employed, resulting in high precision temperature readings with an average error of 0.97 °C, 1.33 °C, and 1.27 °C for FBG sensors on each battery cell, surpassing traditional thermocouple and platinum resistance sensors in some circumstances. The temperature response of FBGs positioned between battery cells demonstrates that, in addition to sensing temperature at the cell level, temperature data can be effectively acquired between cells, suggesting that FBGs may be used to monitor the heat radiated from individual cells in a battery pack.

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