The Importance of Optical Fibres for Internal Temperature Sensing in Lithium-ion Batteries during Operation

Markus S. Wahl, Lena Spitthoff, Harald I. Muri, Asanthi Jinasena, Odne S. Burheim and Jacob J. Lamb
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Markus S. Wahl: Department of Energy and Process Engineering & ENERSENSE, NTNU, 7491 Trondheim, Norway
Lena Spitthoff: Department of Energy and Process Engineering & ENERSENSE, NTNU, 7491 Trondheim, Norway
Harald I. Muri: Department of Electronic Systems & ENERSENSE, NTNU, 7491 Trondheim, Norway
Asanthi Jinasena: Department of Energy and Process Engineering & ENERSENSE, NTNU, 7491 Trondheim, Norway
Odne S. Burheim: Department of Energy and Process Engineering & ENERSENSE, NTNU, 7491 Trondheim, Norway
Jacob J. Lamb: Department of Energy and Process Engineering & ENERSENSE, NTNU, 7491 Trondheim, Norway

Energies, 2021, vol. 14, issue 12, 1-17

Abstract: Lithium-ion batteries (LiBs) are widely used as energy storage systems (ESSs). The biggest challenge they face is retaining intrinsic health under all conditions, and understanding internal thermal behaviour is crucial to this. The key concern is the potentially large temperature differences at high charge/discharge rates. Excess heat created during charge/discharge will accelerate irreversible aging, eventually leading to failure. As a consequence, it is important to keep battery states within their safe operating range, which is determined by voltage, temperature, and current windows. Due to the chemically aggressive and electrically noisy environment, internal temperature measurement is difficult. As a result, non-invasive sensors must be physically stable, electromagnetic interference-resistant, and chemically inert. These characteristics are provided by fibre Bragg grating (FBG) sensors, which are also multiplexable. This review article discusses the thermal problems that arise during LiB use, as well as their significance in terms of LiB durability and protection. FBG-based sensors are described as a technology, with emphasis on their importance for direct temperature measurement within the LiB cell.

Keywords: lithium-ion batteries; thermal management; temperature measurement; optical fibre sensors; fibre Bragg grating (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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