Nondestructive State-of-Charge Assessment of Lithium-Ion Batteries Using Quantitative Ultrasound Spectroscopy
Affiliation Type:
Other
Keywords:
Li-ion batteries, Quantitative Ultrasound Spectroscopy, State of Charge, State of Health
Abstract:
Li-ion batteries are the most common energy sources for portable devices and electric vehicles. The ability to detect and quantify the state of charge (SOC) or the state of health (SOH) of battery cells using fast and nondestructive evaluation techniques is crucial for the technology. Most common approaches require time-consuming or destructive processes. Several studies demonstrated that ultrasound measurements of speed of sound can be used to evaluate SOC and SOH. The aim of this study was to investigate the potential of quantitative ultrasound spectroscopy (QUS) in combination with an ultrasound array for assessing SOC of 18650 Li-ion batteries.
