THEORETICAL MODELING OF CHARGING TIME FOR A 3.7V BATTERY IN SOLAR KEY APPLICATIONS WITH MICROPANELS

• DOI: https://doi.org/10.22533/at.ed.13176226240210

• Palavras-chave: Solar Micropanel, Cathode, Anode, Charging Time, Theoretical Modeling, Solar Switch, Low Power, Charging Efficiency.

• Keywords: Solar Micropanel, Cathode, Anode, Charging Time, Theoretical Modeling, Solar Switch, Low Power, Charging Efficiency.

• Abstract:

  This article presents a theoretical model for estimating the charging times of 3.7 V lithium-ion batteries using low-power solar micropanels (80 mW and 150 mW), intended for applications in automotive solar keys. Based on the fundamental relationship T = C / I, charging times were calculated for 120 mAh and 500 mAh batteries, incorporating a 90% efficiency factor to obtain an effective charging current. The results demonstrate an inversely proportional relationship between current and charging time, showing that, even under ideal conditions, extended periods (up to 34.7 hours) are required for higher-capacity batteries. The study concludes that low-power panels are viable primarily for devices with negligible energy consumption, where battery life takes priority over charging speed. This model serves as a predictive tool and a reference framework for future experimental validations.