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State of health of liquid electrolyte batteries and its relationship with the change in transmittance at a frequency of 254nm

Original scientific paper

Journal of Sustainable Development of Energy, Water and Environment Systems
Volume 11, Issue 4, 1110467
DOI: https://doi.org/10.13044/j.sdewes.d11.0467
Jose Alfredo Palacio1 , Edwin García2, William Orozco1
1 I.U. Pascual Bravo, Medellin, Colombia
2 Universidad de Antioquia, Medellin, Colombia


The determination of the state of health of batteries is a necessary parameter for planning the acquisition of new units in storage systems for energy support. Currently, there are many investigations focused on determining the of the state of health of batteries of different types of batteries, as well as their useful life. However, none have analysed the of the state of health of batteries by changes in the transmittance of the electrolyte for a specific frequency, as proposed in this article. The project from which this article derives considered different health states of lead-acid batteries. The percentage of optical transmittance of the four central cells of the battery was analyzed, generating a classification pattern that allowed the approximate value of battery health to be obtained from the transmittance. The variation of the battery electrode is verified according to the changes in the state of health measured in the electrolyte. This method can be applied to batteries online. The proposed method for determining battery health is a non-destructive and cost-effective way to assess the remaining capacity of batteries. It could be used to extend the lifetime of batteries in storage systems and to help to ensure that systems have the capacity to meet energy demands.

Keywords: Transmittance, SOH, battery, pattern recognition, UVC, Electronic load, electrolyte

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