Small bandwidth measurement of the noise voltage of batteries

The purpose of this paper is to measure the very small electrochemical noise voltage (about 10 nV) generated in batteries. The new method presented here is able to realize these measurements of the noise signal in an industrial environment. The technique we developed is based on a small part of the...

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Bibliographic Details
Published in:Journal of power sources 2003-03, Vol.114 (2), p.357-365
Main Authors: Baert, D.H.J., Vervaet, A.A.K.
Format: Article
Language:English
Subjects:
Applied sciences
Batteries
Direct energy conversion and energy accumulation
Electrical engineering. Electrical power engineering
Electrical power engineering
Electrochemical conversion: primary and secondary batteries, fuel cells
Exact sciences and technology
Noise measurements
Noise mechanisms
State-of-health
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Summary:The purpose of this paper is to measure the very small electrochemical noise voltage (about 10 nV) generated in batteries. The new method presented here is able to realize these measurements of the noise signal in an industrial environment. The technique we developed is based on a small part of the frequency noise spectrum between 3 and 30 Hz. As we will show this seems to offer a good compromise for applications in an industrial environment where a relatively high electrical background noise can be expected to exist. In the proposed measurement setup, we have included the possibility to discriminate between different kinds of noise voltages. This selectivity permits to find indications of different noise generating mechanisms in electrochemical systems, e.g. shot- and burst-noise sources. Measurements confirm the practicability of the proposed measurement setup.
ISSN:0378-7753
1873-2755
DOI:10.1016/S0378-7753(02)00599-2