TY - JOUR
AU - Brandell, Daniel
AB - experimental cell impedance with finite element method- ology modelling for state-of-charge (SoC) indication in LiFePO -based half-cells. The impedance response has 0.075 been modelled sequentially during battery cycling using SoC 20% Newman theory, and is compared with experimental data. SoC 40% 0.050 SoC 60% It is found that the charge-transfer resistance is dependent SoC 80% 0.025 of SoC during battery charging, which can be modelled in good agreement with experimental results. Moreover, it is 0.000 0 10000 20000 30000 40000 50000 60000 seen that cell design parameters—e.g. calendering-depen- Time (s) dent electrode porosity—influence the EIS response and can thus be estimated using the presented methodology. 0 25 50 75 100 125 150 175 Real(Z/Ω) Keywords Li-ion battery  State-of-charge determination Impedance spectroscopy  Finite element methodology 1 Introduction As the utilization of large-scale batteries is currently increasing, so does the demand for more accurate battery diagnostics, thereby generating a rapid development of & Daniel Brandell different battery management systems (BMSs) [1, 2]. Here, daniel.brandell@kemi.uu.se the state-of-charge (SoC) is one of the most critical parameters for indication of the remaining energy left in a Department of Chemistry- Angstrom Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden -Imag(Z/Ω) Applied Current 
TI - State-of-charge indication in Li-ion batteries by simulated impedance spectroscopy
JF - Journal of Applied Electrochemistry
DO - 10.1007/s10800-016-1026-1
DA - 2016-12-22
UR - https://www.deepdyve.com/lp/springer-journals/state-of-charge-indication-in-li-ion-batteries-by-simulated-impedance-KT1XaI5TfL
SP - 229
EP - 236
VL - 47
IS - 2
DP - DeepDyve
ER -