Solar-Powered Convenient Charging Station for Mobile Devices with Wireless Charging Capability

Abstract

Mobile devices, such as smartphones, tablets, laptops, and music players, have been increasingly popular. There is a strong demand for charging stations for these devices, especially in public places, such as bus stops, parks, beaches, schools, hospitals, and playgrounds. This project designs a convenient charging station for the mobile devices. It is renewable and supportive for diverse charging needs. The system key design parameters are: 200-W solar panel, 12-V 900-Wh deep-cycle lead acid battery, 300-W 120-VAC pure sine-wave inverter, 8 outlets (2 wireless, 4 DC USB and 2 AC). It aims to supply an average load of 175Wh. A prototype of the station is built and tested. The testing results show that the station works properly. The control system switches the outlets on and off accurately based on the battery available energy. On a sunny day, with the solar panel and the battery operational, the system can support a full load of 150Wh until the sun is gone. When operating without the solar panel using the fully-charged battery, the system can last at least 1.5 hours. The station can serve as a convenient power source. It helps promote the use of solar energy that is beneficial to the environment