A Novel Experimental Technique for Use in Fast Parameterisation of Equivalent Circuit Models for Lithium-Ion Batteries

Mohammad Amin Samieian*, Alastair Hales, Yatish Patel

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

12 Citations (Scopus)

Abstract

Battery models are one of the most important tools for understanding the behaviour of batteries. This is particularly important for the fast-moving electrical vehicle industry, where new battery chemistries are continually being developed. The main limiting factor on how fast battery models can be developed is the experimental technique used for collection of data required for model parametrisation. Currently, this is a very time-consuming process. In this paper, a fast novel parametrisation testing technique is presented. A model is then parametrised using this testing technique and compared to a model parametrised using current common testing techniques. This comparison is conducted using a WLTP (worldwide harmonised light vehicle test procedure) drive cycle. As part of the validation, the experiments were conducted at different temperatures and repeated using two different temperature control methods: climate chamber and a Peltier element temperature control method. The new technique introduced in this paper, named AMPP (accelerated model parametrisation procedure), is as good as GITT (galvanostatic intermittent titration technique) for parametrisation of ECMs (equivalent circuit models); however, it is 90% faster. When using experimental data from a climate chamber, a model parametrised using GITT was marginally better than AMPP; however, when using experimental data using conductive control, such as the ICP (isothermal control platform), a model parametrised using AMPP performed as well as GITT at 25 °C and better than GITT at 10 °C.

Original languageEnglish
Article number125
JournalBatteries
Volume8
Issue number9
DOIs
Publication statusPublished - 13 Sept 2022

Bibliographical note

Funding Information:
This research was funded by the Innovate UK THT project (grant number 105297) and and the Faraday Institution (grant number FIIF-012).

Publisher Copyright:
© 2022 by the authors.

Keywords

  • AMPP
  • battery
  • equivalent circuit model (ECM)
  • GITT
  • HPPC
  • lithium-ion
  • parametrisations

Fingerprint

Dive into the research topics of 'A Novel Experimental Technique for Use in Fast Parameterisation of Equivalent Circuit Models for Lithium-Ion Batteries'. Together they form a unique fingerprint.

Cite this