Solar LED Street Lamp Components
Nowadays, people advocate environmental protection and energy conservation, and governments of various countries are also committed to the promotion of environmental protection and energy conservation. Shopping malls in all walks of life have also begun to produce some environmental protection and energy saving products according to people's needs. Energy-saving and environmentally friendly products in the lighting industry are typically solar lamps.
Let me introduce to you the components of solar led street lamps.
In the design of integrated solar led street lamps, solar garden lights, and LED street lights, many factors are involved in the light source, solar battery system, and battery charge and discharge control. Any problem in any of these links will cause product defects. solar led street lamps, solar garden lights, and LED street lights are mainly composed of the following components:
Solar panels (photovoltaic modules, power generation panels)
Solar charge and discharge controller
The following are respectively introduced:
1. Solar panels (photovoltaic modules, power generation 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 cells, the most 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 the highest above 16%, polycrystalline silicon is 8%, and amorphous silicon is less than 6%. From the level of conversion efficiency: single crystal silicon A, B, and C, polysilicon A, B, and C, polysilicon A, B, and C. The conversion efficiency of A is up to 16%, B times If the C level is less than 8%, the higher conversion efficiency will generate more electricity, and the low conversion efficiency will generate less electricity. So when you want to purchase, you need to clarify the requirements for the power generation of solar panels (photovoltaic modules, power panels), and choose the corresponding level of solar panels.
Under the same brightness, LED light source consumes only one tenth of incandescent lamp and one third of fluorescent lamp, but its lifespan is 50 times that of incandescent lamp and 20 times that of fluorescent lamp. It is next to incandescent lamp, fluorescent lamp and gas charging. The fourth generation of lighting products after discharge lamps are also the latest energy-saving products on the market. Solar lighting products have the advantages of energy saving and environmental protection. Of course, the lamps should be energy-saving, and the long life can reach 50000-100000 hours. LED has a low working voltage and is very suitable for solar lighting applications. LED light sources are divided into low-power single integrated type and high-power single integrated type. The luminous efficiency is divided into 80-100Lm/W. 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 life, which can reach 50000-100000 hours and the luminous decay is less than 15%. The poor quality of the lamp beads has a large 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. Choosing good parts is of utmost importance to the LED light source.
The lamp shell includes: shell (conventional lamp shell, die-cast aluminum lamp shell) and heat dissipation plate (aluminum base plate heat dissipation plate). Conventional lamp shell: it is the lamp shell that everyone can see everywhere on the road. It is made by sand casting process. In addition to the different appearance, the important point is his weight. Do you know how much aluminum is a kilogram? The weight determines the price, and the aluminum content determines the price of the conventional lamp housing. Die-cast aluminum lamp housing: It is a lamp housing specially designed for LED lamps. It is manufactured by aluminum alloy stamping process. In addition to the different shapes, the focus is on weight. Everyone also knows the cost of aluminum alloy, so the price of die-cast aluminum lamp housing is still determined by the content of aluminum and gold. Aluminum base plate heat sink: It is a kind of aluminum alloy plate made to dissipate heat for LED lamps.
4. Solar energy storage battery
The function of the solar energy storage battery is to store the energy of the solar cell components as much as possible during the day. The selection of battery capacity generally follows the following principles:
First of all, on the premise that it can meet the lighting at night, it must also be able to store the electrical energy that meets the lighting needs of continuous rainy days at night. The battery capacity is too small to meet the needs of night lighting or continuous use; the battery capacity is too large, and the battery panel cannot provide sufficient charging current, the battery is often in a state of power loss, which affects the battery life and causes waste at the same time.
There are mainly two types of solar energy storage batteries on the market: lithium batteries and lead-acid batteries. Lead-acid batteries, as the name suggests, contain heavy metal lead, which poses a great threat to environmental pollution. Therefore, the lead-acid batteries used in solar led street lamps on the market are gradually being replaced by lithium-ion batteries. Lithium batteries are widely used due to their environmental protection, non-polluting, small size, large capacity, high safety performance, and long life span. Especially in the second generation of solar led street lamps, also called integrated solar led street lamps, they play a pivotal role in promoting.
5. Solar charge and discharge controller
Regardless of the size of the solar lamp, a good charging and discharging control circuit is indispensable. 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 battery charging in the photovoltaic power generation system is more complicated than the control of ordinary battery charging. For the design of solar lamps, success and failure often depend on the success and failure of the charge and discharge control circuit. Without a good performance charge and discharge control circuit, it is impossible to have a good performance solar lamp.
Light poles are mainly divided into equal-diameter poles (upper mouth and lower mouth are the same size), cone-shaped rods (small upper mouth and large lower mouth), special-shaped rods, etc. The main material of the light pole is all-steel structure, and the overall hot (cold, electric) galvanizing/plastic spraying (powder) treatment. 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.