Development of a Low Power Energy Harvesting Using Solar Input for Portable Electronic Devices

摘要

This document presents the design of Low Power Solar Energy Harvesters (LPSEH) using solar with one power management circuit. The solar input targeted to power up any portable electronics devices such as laptop or notebook from light. The output power harvested from solar will extend the battery lifespan with total passive components used in this LPSEH system is minimized as well as the cost and power losses. This paper aims to develop of a portable powers backup charger that will be very useful during a power failure and the main function is to create a backup power that generates zero emission for electricity by using the natural source. The photovoltaic modules and the components for energy storage are applied to integrate to each other with the optimum energy level to maximize the efficiency of solar harvesting. A photovoltaic solar panel used to capture the light energy and to be converted to electrical energy and save it to the battery. The charging controller PCB board is developed and designed to produce 12 V output voltage to charge the backup battery pack. The backup battery is used to charge and store more energy up to 20 V in the battery when power is not available so that the stored energy can be used to charge up to two cells due to its high storage capability. This architecture of LPSEH can be used for to charge and to power up the notebook, laptop or any other portable electronic devices.