Get To Know LED Solar Street Light Before Buying

LED solar street lights are powered by photovoltaic panels mounted on the lighting pole. They produce clean and sustainable energy to power the street light. When choosing led solar street lights as the public lighting fixtures, users can save a lot of electricity bills as well as Protect the environment. The design of solar street lights involves various accessories such as light sources, solar panels, batteries, etc. Any problem in any of these links will affect the quality of the product. Before buying the led solar street light, you should know what constitutes this solar lighting fixture. The led solar street light is mainly composed of the following components:

• Solar panels (photovoltaic modules)

• Solar energy storage battery

• Solar charge and discharge controller

• LED light source

• shell

• Light pole

1. Solar Panels

The main function of solar cells is to convert light energy into electrical energy. This phenomenon is called the photovoltaic effect. Among many solar panels, the more common and practical ones are mainly monocrystalline silicon solar cells, polycrystalline silicon solar cells and amorphous silicon solar cells. From the material category, the conversion efficiency of monocrystalline silicon is about 20%, polycrystalline silicon is 16%, and amorphous silicon is less than 8%. From the level of conversion efficiency: single crystal silicon A, B, and C, polysilicon A, B, and C, and amorphous silicon A, B, and C. The conversion efficiency of class A is the highest around 20%, class B is the second, and class C is lower than 8%. Solar panels with high conversion efficiency will generate more electricity, while those with low conversion efficiency will generate less electricity. So when you want to purchase solar street lights, you need to clarify the requirements for the power generation of solar panels, and choose the corresponding level of solar panels. The solar panels provided by EXC solar street light manufacturers are all of the highest level-Class A.

2. Solar energy storage battery

The function of the solar energy storage battery is to store the electric energy converted by the solar cell components during the day as much as possible. The selection of battery capacity generally follows the following principles: First, on the premise that it can meet the lighting at night, it must also be able to store it to meet the needs of night lighting on continuous rainy days. The battery capacity is too small to meet the needs of night lighting or can not meet the needs of continuous rainy days; the battery capacity is too large, the battery panel cannot provide sufficient charging current. The battery will often be in a state of power loss, which will affect the battery life and cause waste at the same time. Solar energy storage batteries currently mainly include lead-acid batteries, gel batteries and lithium batteries on the market. Because there are too many battery manufacturers, the quality of their products varies. The cost of lead-acid batteries mainly depends on the amount of lead. Some manufacturers use small ones to charge large ones (such as 60AH marked 80AH), and some have the same appearance and volume but inject glass glue into the shell to increase the weight because of the high cost of lead. Lithium batteries are the most cost-effective among these types of batteries, with long service life and low pollution. Of course, the price of lithium batteries is also the highest.

3. Solar charge and discharge controller

Regardless of whether the configuration of solar street lights is high or low, a good performance charge and discharge controller is essential. In order to prolong the service life of the battery, its charging and discharging conditions must be restricted to prevent the battery from overcharging and deep discharge. In addition, because the input energy of the solar photovoltaic power generation system is extremely unstable, the control of the battery charging in the photovoltaic power generation system is better than The control of ordinary battery charging is more complicated. For solar lamps, the charge and discharge controller greatly affects its performance and service life. Without a good performance charge and discharge control circuit, it is impossible to have a good performance solar lamp. The basic functions of the solar charge and discharge controller: light control, time control, temperature control and other functions for selection, with dimming (power adjustment) function. At the same time, the charge and discharge controller must have the following characteristics, namely: anti-reverse charge control, anti-overcharge control, anti-over-discharge control, temperature compensation, etc.

4. LED light source

Under the same brightness, LED light source consumes only one-tenth of incandescent lamps and one-third of fluorescent lamps, but its life span is 50 times that of incandescent lamps and 20 times that of fluorescent lamps. It is the fourth-generation lighting product after incandescent lamps, fluorescent lamps, and gas charge-discharge lamps, and it is also the latest energy-saving product on the market. LED solar street lights take the advantage of energy saving and environmental protection. Of course, the light source must be energy-saving. The lifespan of the LED light source can be as long as 50000-100000 hours, and the voltage is DC, without inverter, which is convenient and safe.

LED light sources are divided into low-power single integrated type and high-power single integrated type, which are divided into imported chips and domestic chips from chip manufacturers. Large Lm/W values have high luminous efficiency, and small Lm/W values have low luminous efficiency. The lamp beads of good quality have low luminous decay and long lifespan, which can reach 50000-100000 hours and the luminous decay is less than 15%. The poor quality of the lamp beads has a long light decay and a short lifespan. Generally, the light decay will drop by 30% after one year, which means that the light will not be very bright after one year.

5. Shell

The shells of solar street lights on the market are also different, there are conventional shells and professional die-cast aluminum shells. Conventional lamp housing: it is the lamp housing that everyone can see everywhere on the road, which is manufactured by the sand-finishing process. In addition to the different appearance, the important point is his weight. The price of aluminum is very expensive. The amount of aluminum in the lamp housing determines the price of the housing. Die-cast aluminum lamp housing: It is a lamp housing specially designed for LED lamps, which is manufactured by aluminum alloy stamping process. The quality is high and the price is relatively expensive. Aluminum base plate heat sink: It is a kind of aluminum alloy plate made to dissipate heat for LED lamps.

6. Light pole

Light poles are mainly divided into equal-diameter poles (the upper mouth and lower mouth are the same size), cone-shaped poles (small upper mouth and large lower mouth), special-shaped poles, etc. The main material of the light pole is all-steel structure, and the overall hot (cold, electric) galvanizing/plastic spraying (powder) treatment. The quality of the light pole depends on the conscience of the manufacturer. If the diameter meets the contract requirements, but the wall thickness does not meet the requirements, the 3.0 version is made into 2.5, and the cold galvanizing is said to be hot-dip galvanizing, and users cannot find it. Therefore, the quality of light poles depends on the conscience of street light manufacturers! The height of the light pole should be determined according to the width of the road, the distance between the lamps and the illuminance standard of the road.

The key to a good led solar street light is to have a reasonable configuration. Therefore, if you want to buy a cost-effective led solar street light, you must have a full understanding of these accessories and provide relevant information and lighting needs to the street light manufacturer. If you are not very clear about the purchase of street lights after reading this article, please contact us, we will be at your service at any time!