As a new energy technology product, solar street lights mainly operate by converting light energy into electric energy, and then converting electric energy into light energy. If there is a problem with light energy reception, then the entire solar street light is just a decoration.
In summer, the days are long and the nights are short, and the light intensity is also very strong. Generally, there is no need to worry about the lack of light energy. But in winter, when the days are short and the nights are long, and the light intensity is not so strong, how to ensure that solar street lights can have sufficient lighting time? ? What are the main issues that need to be addressed in the early design? Let’s take a look at it in detail.
1) Selection of solar panels
The light energy received by the solar panel in a unit time is certain. Under the same conditions, the photoelectric conversion efficiency of the solar panel is different, and the time for the battery to be fully charged is also different.
For the winter when the daytime is not so long and the light conditions are not as good as in summer, if you want to fully charge the battery while there is sunshine, it means that the requirements for the photoelectric conversion efficiency of solar panels are also higher.
Generally speaking, there are two types of solar street light panels: monocrystalline silicon and polycrystalline silicon. Under the same conditions, the photoelectric conversion rate of monocrystalline silicon is higher than that of polycrystalline silicon. Polycrystalline silicon should achieve the same photoelectric conversion effect. , the required area is larger. Therefore, if the winter time in the area is long and the rainy weather is long, it is advisable to choose solar street lights made of monocrystalline silicon panels.
2) Selection of battery
In addition to the choice of solar panels, the battery is also the focus of consideration. If the winter is long, there are two aspects to consider, one is its cold resistance, and the other is its capacity. Temperature will affect the characteristics of the battery. If the cold resistance of the battery is poor, the activity of the battery will be reduced, which will affect its own charge and discharge, and the capacity will also become smaller and the service life will also be shorter. Therefore, the cold resistance of the battery must be Think clearly.
Commonly used are lead-acid batteries and lithium iron phosphate batteries. It is recommended to choose lithium iron phosphate batteries. In addition to better chemical stability, the temperature is less rigid, and the capacity is larger, the discharge depth is deeper, and the charge and discharge The efficiency is also higher, and it is also more environmentally friendly than other batteries.
3) Timely cleaning
In addition to the selection of main accessories, we should also pay attention to the cleaning of solar street lights, especially after snowing, if the snow piles up on it, forming a shadow area, the sunlight cannot be directly on the solar panel, on the one hand, on the other hand , Uneven conversion work will also reduce the service life of the battery board. Therefore, it is necessary to clean up the snow on the battery board in time.
In fact, before installing solar street lights, manufacturers generally ask customers to understand this information, the climate and environment characteristics of the area, the time for continuous lighting, etc. The collection of these data can facilitate manufacturers to design solar street lights that meet customer lighting needs. street light. As long as the parameters of all aspects are designed, there is no need to worry about the use of solar street lights in winter.
Post time: Feb-27-2023