Temperature and Humidity Measurements

Wahl, Markus Solberg; Muri, Harald Ian; Snilsberg, Rolf K.; Lamb, Jacob Joseph; Hjelme, Dag Roar

doi:10.1007/978-3-030-43676-6_3

Cited by 2 publications

(2 citation statements)

References 54 publications

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“…where n e f f ective is the effective refractive index of the grating and Λ is the period of the index modulation or grating spacing [11,98,99]. A change in n e f f ective or a difference in Λ (or a combination of both) culminates in a change in the reflected Bragg wavelength.…”

Section: Fibre Bragg Grating Temperature Sensorsmentioning

confidence: 99%

“…Awareness of internal thermal activity is key to this [6][7][8]. The main issue is the substantial temperature increase at elevated charge/discharge rates [5,[9][10][11]. Excess heat produced during charge/discharge or in the presence of short circuits can cause irreversible cell damage and eventually lead to explosion or combustion [12,13].…”

Section: Introductionmentioning

confidence: 99%

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

Wahl¹,

Spitthoff²,

Muri³

et al. 2021

Energies

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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.

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Section: Fibre Bragg Grating Temperature Sensorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Wahl¹,

Spitthoff²,

Muri³

et al. 2021

Energies

Self Cite

View full text Add to dashboard Cite

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Current Trends for State-of-Charge (SoC) Estimation in Lithium-Ion Battery Electric Vehicles

Espedal¹,

Jinasena²,

Burheim³

et al. 2021

Energies

103

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Energy storage systems (ESSs) are critically important for the future of electric vehicles. Despite this, the safety and management of ESSs require improvement. Battery management systems (BMSs) are vital components in ESS systems for Lithium-ion batteries (LIBs). One parameter that is included in the BMS is the state-of-charge (SoC) of the battery. SoC has become an active research area in recent years for battery electric vehicle (BEV) LIBs, yet there are some challenges: the LIB configuration is nonlinear, making it hard to model correctly; it is difficult to assess internal environments of a LIB (and this can be different in laboratory conditions compared to real-world conditions); and these discrepancies can lead to raising the instability of the LIB. Therefore, further advancement is required in order to have higher accuracy in SoC estimation in BEV LIBs. SoC estimation is a key BMS feature, and precise modeling and state estimation will improve stable operation. This review discusses current methods use in BEV LIB SoC modelling and estimation. The review culminates in a brief discussion of challenges in BEV LIB SoC prediction analysis.

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Temperature and Humidity Measurements

Cited by 2 publications

References 54 publications

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

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

Current Trends for State-of-Charge (SoC) Estimation in Lithium-Ion Battery Electric Vehicles

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