Solar Path Light is a street light that uses solar power to generate electricity, super bright LED lamps as light sources, and is controlled by an intelligent charge and discharge controller to replace traditional public power lighting. Solar street lights have the advantages of good stability, long life, high luminous efficiency, easy installation and maintenance, high safety performance, energy saving, and environmental protection, and are economical and practical. Now, let's take a look at the structural characteristics of Solar Path Light:
1. Solar panels
The solar panel is the core part of the sun bear street light and the most valuable part of the solar street light. Its function is to convert the radiation state force of the sun into electrical energy or send it to the battery for storage. Solar cells mainly use monocrystalline silicon as the material. A P-N junction similar to a diode is made of single crystal silicon. The working principle is similar to that of a diode.
2. Solar controller
The most important part of the solar lighting system is the controller, whose performance directly affects the life of the system, especially the life of the battery. The controller uses an industrial-grade MCU as the main controller. Through the measurement of ambient temperature, the detection, and judgment of parameters such as battery and solar cell module voltage, current, etc., control the on and off of MOSFET devices to achieve various control and protection functions.
Since the input energy of the solar photovoltaic power generation system is extremely unstable, it is generally necessary to configure the battery system to work. Generally, there are lead-acid batteries, Ni-Cd batteries, and Ni-H batteries. The solar cell power must be more than 4 times higher than the load power for the system to work properly. The voltage of the solar cell must exceed the working voltage of the battery by 20-30% to ensure that the battery is normally negatively charged. The battery capacity must be more than 6 times higher than the daily load consumption.
4. Light source
The light source used for solar street lamps is an important indicator of whether solar lamps can be used normally. Generally, solar lamps use low-voltage energy-saving lamps, low-pressure sodium lamps, electrodeless lamps, and LED light sources. LED light source, long life, up to 1,000,000 hours, low operating voltage, no need for an inverter, high light efficiency, domestic 50Lm/w, imported 80Lm/w. As technology advances, the performance of LEDs will be further improved. The author believes that LED as the light source of solar street lights will be a trend.
5. Lamp pole and lamp shell
The height of the light pole should be determined according to the width of the road, the spacing of lamps, and the illuminance standard of the road. Lamp shell According to our collection of many foreign solar lamps information, between aesthetics and energy saving, most of them choose energy saving, the appearance of lamps is not high, and it is relatively practical.