A multi-point sensor based on optical fiber for the measurement of electrolyte density in lead-acid batteries.
This article describes a multi-point optical fiber-based sensor for the measurement of electrolyte density in lead-acid batteries. It is known that the battery charging process creates stratification, due to the different densities of sulphuric acid and water. In order to study this process, density measurements should be obtained at different depths. The sensor we describe in this paper, unlike traditional sensors, consists of several measurement points, allowing density measurements at different depths inside the battery. The obtained set of measurements helps in determining the charge (SoC) and state of health (SoH) of the battery.
Department of Electronic Technology, University of Vigo, 36310 Vigo, Spain. amcaopaz@uvigo.es
Ana M
AM
Cao-Paz
Jorge
J
Marcos-Acevedo
Alfredo
A
del Río-Vázquez
Carlos
C
Martínez-Peñalver
Alfonso
A
Lago-Ferreiro
Andrés A
AA
Nogueiras-Meléndez
Jesús
J
Doval-Gandoy