What are the current challenges faced by solar street lights?

What are the current energy problems?

With the increasing shortage of traditional energy sources, the application of solar energy will become more and more extensive, especially the field of solar power generation has developed into a mature sunrise industry in just a few years.

1: At present, one of the most important links restricting the application of solar power generation is the price. Taking a two-way solar street light as an example, the two-way load is 60 watts in total (the effective light in the middle and lower reaches of the Yangtze River is 4.5h/day, every night Discharging for 7 hours and adding 20% of the reserved amount of the battery board) the battery board needs about 160W, calculated at 4 yuan per watt, the cost of the battery board is 640 yuan, plus the cost of the battery pack of about 180AH is also 1080 Left and right, the one-time input cost of the entire street lamp is much higher than that of the city circuit lamp, which has caused the main bottleneck in the application field of solar street lamps.

2: The service life of the battery should also be considered. In the application of the entire street lighting system, the general battery is guaranteed for three or five years, but the general battery will be dissatisfied with charging after one year or even half a year, and some actual charging rates are limited. It may drop to about 50%, which will definitely affect the normal lighting at night during continuous rainy days, so it is particularly important to choose a better battery.

3: Some engineering companies often choose LED lights as the lighting of solar street lights, but the quality of LED lights is uneven, and LEDs with serious light decay may attenuate 50% of the illuminance in half a year. So be sure to choose LED lights with slow light decay, or choose electrodeless lamps, low-pressure sodium lamps, etc.

4: The choice of controller is often a problem ignored by engineering companies. The quality of controllers varies. The market price of 12V/10A controllers ranges from 100-200 yuan, although it is the least valuable in the entire street lighting system. part, but it is a very important part. The quality of the controller directly affects the life of the components of the solar street light system and the procurement cost of the entire system. One: You should choose a controller with lower power consumption. The controller works 24 hours a day. If its own power consumption is large, it will To consume part of the power, it is best to choose a controller with a power consumption below 1 milliampere (MA). Two: Choose a controller with high charging efficiency. The controller with MCT charging mode can automatically track the maximum current of the battery panel. Especially in winter or when there is insufficient light, the efficiency of MCT charging mode is about 20% higher than others. Three: You should choose a controller with two-way power adjustment. The controller with power adjustment has been widely promoted. At night when there are few pedestrians, one or two-way lighting can be automatically turned off to save electricity. It can also adjust the power of LED lights. . In addition to selecting the above power-saving functions, you should also pay attention to the protection function of the controller for the battery and other components. For example, a controller with a trickle charging mode can protect the battery very well and increase the life of the battery. When the value is low, try to adjust the undervoltage protection value to ≥ 11.1V to prevent the battery from being over-discharged.

5: Places far away from urban areas should also pay attention to anti-theft work. Many construction companies have not carried out effective anti-theft due to negligent construction, resulting in the theft of batteries, battery panels and other components, which not only affects normal lighting, but also causes unnecessary property loss. In engineering cases, most of the stolen batteries are batteries. The batteries are buried in the ground and poured with cement is an effective anti-theft measure.
It is best to weld and strengthen it if the battery box is installed on it.

6: The waterproof of the controller, the controller is generally installed in the lampshade and the battery box, and generally it will not enter the water, but in actual engineering cases, the connecting wires of the controller terminals are often short-circuited due to rainwater flowing into the controller along the connecting wires. Therefore, during construction, care should be taken to bend the internal connection wire into a “U” shape and fix it, and the external connection wire can also be fixed in a “U” shape, so that rainwater cannot pour in and cause a short circuit of the controller. Apply waterproof glue to the interface.

7: In the practical application of many solar street lights, solar street lights in many places cannot meet the normal lighting needs, especially in rainy days. In addition to the use of related components with poor quality, another main reason is to blindly reduce the cost of components , Do not design and configure according to the demand, reduce the use standard of the battery board and the battery, so the street lamp cannot provide lighting in rainy days。

What are the highlights of solar street lights?

In terms of working principle, solar street lights use solar energy as the light source, and solar panels will charge the battery during the day. At night, when lighting is needed, the battery will start to supply power to the light source. It does not need to lay complex and expensive power supply lines in use, so that it can be installed in any place and any environment. Its battery uses natural light and can be recycled. It does not need an external power source. The source is green and environmentally friendly. It can automatically adjust the switch, and truly achieve unattended, all-weather work.

Compared with traditional incandescent street lights powered by high voltage, solar street lights are very different in product features, material structure and power supply lines. Solar street lights are a kind of traffic and road condition lights that our country uses solar energy as the external power supply of street lights. In urban life, street lights play a very important role and are the eyes of our travel and nightlife.

In terms of product features, solar street lights use solar energy in the light source. During the day, it can use the solar circuit board to charge the battery in the street lamp. At night, the battery can supply power to the lamp, which can fully meet the needs of lighting. The solar power used in solar street lights is green and environmentally friendly, and can be seen everywhere in nature, which saves the materials needed for laying power supply lines, saves a lot of manpower and material resources, and improves construction efficiency. In addition, solar street lights are environmentally friendly, energy-saving, long-life, stable product structure, and have very good social and economic benefits.