Investigation of guided wave dispersion curves of Lithium-ion batteries at different state of charge levels

Publikation: KonferenzbeitragPaperBegutachtung

Abstract

The dispersion curves of the zero order Lamb-modes
of a Lithium-ion battery at different state-of-charge levels were
characterized in this work. The results show that the drop-off
frequency of the symmetrical mode varies with the state of charge
of the battery. In addition, the measurements were compared to
lossless one-dimensional quasi-isotropic layer dispersion curve
simulations with good agreement in the frequency spectrum.
The measurements were conducted after cycling the lithium ion
battery to different state of charge levels, while during each
measurement the frequency of the exciting transducer is varied
in the range from 1 kHz to 20 kHz. The received signal is
filtered and the dispersion curve is evaluated using the peak-
to-peak difference between the signal envelope and the exciting
signal. These experimental results are compared with simulations
of the dispersion curves using a one-dimensional quasi-isotropic
layer model of the investigated lithium ion battery. In this novel
approach, a linear correlation between the drop-off frequency,
at which the zero-order symmetric Lamb mode disappears, and
the state of charge of a lithium-ion battery is shown.
Originalspracheenglisch
PublikationsstatusAngenommen/In Druck - 10 Okt. 2022
Veranstaltung2022 IEEE International Ultrasonics Symposium: IEEE IUS 2022 - Venice, Italien
Dauer: 10 Okt. 202213 Okt. 2022

Konferenz

Konferenz2022 IEEE International Ultrasonics Symposium
KurztitelIEEE IUS 2022
Land/GebietItalien
OrtVenice
Zeitraum10/10/2213/10/22

Schlagwörter

  • Lithium-ion battery
  • state of charge
  • nondestruc- tive evaluation
  • Lamb waves
  • piezoelectric transducers

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