Crosstalk interferences on impedance measurements in battery packs

L.H.J. Raijmakers, K. Mundaragi Shivakumar, M.C.F. Donkers, M.J.G. Lammers, H.J. Bergveld

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

In order to provide the required power and energy for e.g. automotive applications, a multitude of cells is assembled into a battery pack. For safety and control purposes it is of interest to equip every single cell with an Electrochemical Impedance Spectroscopy (EIS) measurement system. However, performing EIS measurements simultaneously on each cell in a battery pack introduces crosstalk interferences in surrounding cells. This causes EIS measurements in battery packs to be inaccurate. An experimental investigation on a battery pack showed that crosstalk is a linear phenomenon which is dependent on the measurement frequency, the relative position of the cells and the inter-cell spacing. Based on the experimental results and a proposed two-coil model with inductive coupling, a transfer-function description has been developed in order to simulate the crosstalk behavior. This model can be used as a supporting tool in the development of ElS-based measurement systems in battery packs.
Original languageEnglish
Pages (from-to)42-47
JournalIFAC-PapersOnLine
Volume49
Issue number11
DOIs
Publication statusPublished - 2016
Event8th IFAC Symposium Advances in Automotive Control (AAC 2016) - Kolmården Wildlife Resort, Norrköping, Sweden
Duration: 20 Jun 201623 Jun 2016
http://aac2016.isy.liu.se/

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