Abstract:

In order to solve the problem of only a single energy source existed in portable energy devices, we designed a set of portable energy device based on photovoltaic power generation and piezoelectric power generation technology, which has two main energy sources, solar energy and kinetic energy produced by exercising. The solar energy and kinetic energy are harvested through solar cells and piezoelectric materials, respectively. We designed the layout structure of the energy device to meet the demand for the portability and high efficiency. According to the result of the research, the energy device having the advantages of portability and high efficiency meets the technical requirements of portable energy devices, and can satisfy the practical needs in daily life.

Key words: photovoltaic power generation, piezoelectric power generation, portable energy device;
high efficiency