Abstract
This paper presents a microcontroller-based, on-line battery state-of-charge (SOC) estimator, and monitoring system for sealed lead–acid batteries, used as back-up power supplies in various applications. The proposed SOC estimation system consists of a combination of the discharge time versus discharge rate data given in manufacturers’ data sheets, and coulometric measurements. Battery SOC monitoring tests have been carried out under both constant and dynamic load conditions, and for alternate charge–discharge cycles of lead–acid batteries of different capacities, and for different operating temperatures. The test results have shown that a very good accuracy in the estimation of available capacity is obtained for various practical operating conditions. Changes in battery characteristics which occur due to ageing are also taken into account by estimating the actual capacity of the battery, and adopting the corresponding recharacterization of the aged lead–acid cells.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
