Soft-sensor approach in characterization of VRLA batteries

Tenno, A.

doi:10.1049/cp:20010650

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The typically available commercial impedance or conductance meters have used excitation signals with frequencies equal to or higher than 10 Hz. 34 The obtained readings have been somewhat controversial because the same reading could equally correspond to 80 or 100% of SOC as may be seen in Ref. 27.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

A Method for Battery Impedance Analysis

Tenno

Suntio

2004

J. Electrochem. Soc.

View full text Add to dashboard Cite

A model-based method is proposed for the impedance-spectra analysis of valve-regulated lead-acid batteries. The electrochemical and double-layer processes are analyzed in a wide range of frequencies based on current, voltage, and temperature measurements. Both slow and fast dynamics of the positive and negative electrodes are evaluated. The method is shown to be accurate, enabling the detection of differences in capacity or other parameters even in slightly differing batteries. An exact relation between battery impedance and the electrochemical cell model is established giving useful information on the contribution of different elements and processes on the impedance. The proposed method is computationally effective due to the special analytical formulation developed for impedance analysis. In addition to the basic processes, the method also allows analysis of the fast-rate discharge and overcharge processes.

show abstract

Section: Discussionmentioning

confidence: 99%

“…For comparison, see the curves of impedance analyzed on the same test batteries, but for T 0 ϭ 1 h in Ref. 34. The more linear and shorter curves are natural.…”

Section: Methodsmentioning

confidence: 99%