How to extend the solar street lamp battery life?
Author： Time：2016/5/19 18:50:48
Recently,
by the North China Institute of Aeronautics and Astronautics to
complete the hybrid energy storage solar LED street lamp through expert
appraisal. The group believes that the technology has
energy-saving environmental protection, high stability, long battery
life and other characteristics, the overall level of the leading
domestic level.
The solar LED street
lamp model and its realization method using super capacitor and storage
battery are proposed to solve the problems such as short battery life,
low power density, slow discharge rate and weak current charging in
traditional solar LED street lamp. .
By
using the integrated use of power electronics technology,
microcontroller technology and automatic control technology to develop
hybrid energy storage solar LED lights, using two sets of buck-boost
bi-directional power converter in parallel to achieve the supercapacitor
and battery energy conversion between; in accordance with the battery The
optimal charge and discharge status is realized by double hysteresis
loop, which optimizes the battery charging and discharging device. At
the same time, the use of super capacitor energy storage capacity,
reducing the photovoltaic power generation intermittent caused by
charging small cycles.