Extracting equivalent circuit parameters of lead-acid cells from sparse impedance measurements

Sudarshan Rao Nelatury, Pritpal Singh

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A method for extracting the equivalent circuit parameters of a lead-acid battery from sparse (only three) impedance spectroscopy observations at three different frequencies is outlined. The method is ideal for finding the parameters in an equivalent circuit consisting of bulk resistance, a reaction resistance and a constant phase element (CPE). Electrochemical impedance spectroscopy (EIS) measurements were made on spirally wound 2.5 Ah lead-acid cells. The equivalent circuit parameters found using our method closely compare with those extracted from the EIS measurements. The complete EIS spectrum calculated using the estimated circuit parameters at all other frequencies also closely matched the actual measurements.

Original languageEnglish (US)
Pages (from-to)621-625
Number of pages5
JournalJournal of Power Sources
Volume112
Issue number2
DOIs
StatePublished - Nov 14 2002

Fingerprint

impedance measurement
Electrochemical impedance spectroscopy
equivalent circuits
Equivalent circuits
Lead
impedance
acids
Acids
cells
spectroscopy
Lead acid batteries
lead acid batteries
Spectroscopy
Networks (circuits)

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Cite this

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Extracting equivalent circuit parameters of lead-acid cells from sparse impedance measurements. / Nelatury, Sudarshan Rao; Singh, Pritpal.

In: Journal of Power Sources, Vol. 112, No. 2, 14.11.2002, p. 621-625.

Research output: Contribution to journalArticle

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