As a new energy technology product, solar led street light is mainly converted into electric energy by light energy, and then converted into electric energy to operate. If there is a problem in light energy receiving, then the whole solar street light is just a display.
Summer is long and short, and the light intensity is very strong. Generally, you don't have to worry about the lack of light energy. But in the winter when the night is long and the light intensity is not so strong, how can you ensure that the solar street light can have sufficient lighting time? ? What are the main problems in the early design? Let's take a look at it.
1) Solar panel selection
The solar panel receives a certain amount of light energy per unit time. 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 time, it is not so long, and the lighting conditions are not as good as the summer. If you want to store the battery when you are in the sunshine, it means that the photoelectric conversion efficiency of the solar panel is higher.
Generally speaking, solar cell street panels are made of single crystal silicon and polycrystalline silicon. Under the same conditions, the photoelectric conversion rate of single crystal silicon is higher, and the polysilicon needs to achieve the same photoelectric conversion effect. The area required is also larger.
Therefore, if the winter time in the region is long and the rainy weather is long, it is advisable to choose solar panels for making solar panels.
2) Battery selection
In addition to the choice of solar panels, the battery is also the focus of consideration. If the winter time is long, it has 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 battery is poor in cold resistance, it will reduce the activity of the battery, which will affect its charge and discharge, and the capacity will be smaller and the service life will be less. Therefore, the cold resistance of the battery must be Consider it clearly.
Commonly used lead-acid batteries and lithium iron phosphate batteries, it is recommended to choose lithium iron phosphate battery, in addition to its own chemical stability is better, the temperature is less rigid, and the capacity is greater, the depth of discharge is deeper, charge and discharge The efficiency is higher, and it is more environmentally friendly than other batteries.
3) Timely cleaning In addition to the choice of main accessories, it is usually necessary to pay attention to the cleaning of solar street lights, especially after snowing, if the snow piles up on it, forming a shadow area, causing the sun to be unable to directly shine on the solar panel. On the other hand, uneven conversion work will also reduce the life of the panel. Therefore, it is also necessary to clean the snow on the battery board in time.
In fact, before installing solar street lights, manufacturers generally look for customers to understand this information, the climate characteristics of the region, the need to keep lighting, etc., the collection of these data can facilitate manufacturers to design solar energy to 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.
Contact Person: Mr. Hugh Hu
Tel: +86 136 8680 7553