Sensors (Feb 2022)

A Review of Mechanical and Chemical Sensors for Automotive Li-Ion Battery Systems

  • Matteo Dotoli,
  • Riccardo Rocca,
  • Mattia Giuliano,
  • Giovanna Nicol,
  • Flavio Parussa,
  • Marcello Baricco,
  • Anna Maria Ferrari,
  • Carlo Nervi,
  • Mauro Francesco Sgroi

DOI
https://doi.org/10.3390/s22051763
Journal volume & issue
Vol. 22, no. 5
p. 1763

Abstract

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The electrification of passenger cars is one of the most effective approaches to reduce noxious emissions in urban areas and, if the electricity is produced using renewable sources, to mitigate the global warming. This profound change of paradigm in the transport sector requires the use of Li-ion battery packages as energy storage systems to substitute conventional fossil fuels. An automotive battery package is a complex system that has to respect several constraints: high energy and power densities, long calendar and cycle lives, electrical and thermal safety, crash-worthiness, and recyclability. To comply with all these requirements, battery systems integrate a battery management system (BMS) connected to an complex network of electric and thermal sensors. On the other hand, since Li-ion cells can suffer from degradation phenomena with consequent generation of gaseous emissions or determine dimensional changes of the cell packaging, chemical and mechanical sensors should be integrated in modern automotive battery packages to guarantee the safe operation of the system. Mechanical and chemical sensors for automotive batteries require further developments to reach the requested robustness and reliability; in this review, an overview of the current state of art on such sensors will be proposed.

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