With the continuous development of photovoltaic technology, solar street lights are becoming more and more common in our lives. We all know that after solar light passes through the light during the day, the light energy is converted into electrical energy and then stored by the battery. At night, the battery Even the light source provides power to achieve lighting effects.
So how exactly does it make the light source be converted into electrical energy through solar panels and stored? In this process, what kind of configuration will be involved? Let’s take a closer look at it.
First, the principle of solar street light photovoltaic module power generation
Solar street lights can generate electricity mainly by using the photovoltaic effect of semiconductor materials, which can convert solar light radiation into electricity.
A solar cell is composed of two different types of semiconductors, N-type and P-type. The junction between them is called a PN junction. When the solar panel receives light, it will be released in this PN junction because it has obtained light energy. Electrons, generating corresponding electron-hole pairs.
The holes of the N-type semiconductor will move to the P-type, and the electrons in the P-type region will forget the N-type region to move, forming a current from the N-type region to the P-type region. Power is output.
Second, the power generation system configuration
Solar street light power generation systems are mainly composed of solar panels, control and storage batteries. If the output power is AC 220V or 110V, inverters will also be involved, so what role will they play in this process?
1.Solar panel
As the core part of the power generation system, as mentioned above, it mainly plays the role of converting light energy into electrical energy, and then sends it to the battery for storage, which is convenient for night lighting or to promote load work.
2.Controller
The full name is the solar charge-discharge controller. From this name, you can understand its role. It is used to control the working state of the entire system, and it also plays a protective role for the battery.
The street light control and time control functions are also implemented on the above, which can be selected according to specific needs. If the temperature difference between the places where the solar street lights are installed is large, the controller often has a function of temperature compensation to better adapt to the environment.
3.Battery
In the past, lead-acid batteries were commonly used, but now they are gradually being replaced by lithium iron phosphate batteries. The main purpose is to store the electrical energy converted by solar panels and release them when needed at night.
4.Inverter
The direct output of solar energy is generally the current voltage of 12V, 24V, 48V. If it is necessary to provide AC power of 220V, 110V, then a DC-AC inverter is needed, which can convert the DC power generated by the solar power generation system into AC power.
And when some loads need to use multiple voltages, such as the need to convert 24V DC power to 5V DC power, then a DC-DC inverter will be needed.
Solar Light Magazine / Solar Street Lights / Author: Cmoonlight
What are the market prospects for solar street lights?
Solar Street Lighting Global Market Outlook - Industry Trends and Growth Forecast
IECEE and Saber Certification in Saudi Arabia
CB Certification of solar street light
Do you really know the certifications of solar street light in your country?
Top 10 Solar Street Light Manufacturers in 2021
2020 top ten manufacturers of solar street lights ?
All in Two solar street light
The battery and the LED light source are integrated together, the solar panel is separated, and the LED light source is not extended outwards.
Table of Contents:
1. Don’t just look at the parameters only
2. Cheap & low quality solar lights= Waste Money
3. Local temperature, latitude
4. The heat dissipation performance of
Are you looking for the best solar street light manufacturer? The popularity of All in one solar street lights has increased manifold in the last decade. This is primarily because of low maintenance and assured bene
First of all, we must know several roles: local government, local project general contractor, local project subcontractor, local trader, Chinese trader or factory.
Table of Content:
95% of solar street lights in the world are produced in China
There is no solar street light factory in European and American countries because:
Are you planning to use an all in one solar street light in your next lighting project? There are hundreds of options. Therefore, you may find the selection process to be quite confusing. Well, consider yourself lucky because this article narrows your choices by guiding you to the best three options in 2021.
Leave a Comment *