With the increasing shortage of traditional energy, solar energy will be used more and more widely. In particular, solar power has become a complex business in just a few years.

1: One of the most important factors limiting solar use is price. Let's take a two-channel solar street lamp as an example. Both channels have a load of 60 watts. The light in the middle and lower reaches of the Yangtze River is 4.5 hours/day, and the discharge is at night. 20) The panel needs about 160 W, which is already 20 yuan per watt, and the cost of the panel will be 3200 yuan, plus the battery cost of about 180 AH is also about 1800 yuan. The one-time investment cost of the whole street lamp is much higher than that of the urban electric street lamp, which constitutes the main bottleneck of the application of solar street lamp.

2: Battery life should also be considered in the use of the entire solar street lamp system. Regular batteries are guaranteed for three to five years, but won't meet the requirements for one to six months. Some actual charges may drop to around 50, which will definitely affect normal lighting on consecutive rainy nights, so it is especially important to choose a better battery.

3: Some engineering companies often choose LED lights as solar street lighting lamps, but the quality of LED lights is uneven, serious dimming LED will reduce the lighting degree by 50 in half a year. Therefore, be sure to choose leds with slow fading light.

4: Controller selection is often overlooked by engineering companies. The quality of the controllers is not uniform. The market price of the 12V/10A controller is between 100 and 200 RMB, although it is the lowest price of the whole street lighting system. Part, but this is a very important link. The quality of the controller directly affects the service life of the solar street lamp system components and the ownership cost of the whole system.

One: You should choose a controller with lower power consumption. The controller works continuously for 24 hours. If your own power consumption is high, you will consume some power. Select a controller that consumes less than 1 mA (MA).

Two: Select a controller with high charging power. The controller with MCT charging mode can automatically track the maximum current of the panel. Especially in winter or under low light conditions, the charge of the MCT charging mode is about 20 higher than the other charging modes.

Third: A controller with two distribution power sources should be selected. Distribution controllers have been widely promoted. It can automatically turn off a light or two at night when pedestrian demand exceeds supply. It can also power LED lights. In addition to selecting the above power saving functions, attention should also be paid to the controller's protection function for batteries and other components. For example, the controller in trick current charging mode can protect the battery well, increase battery life and other Settings of controller undervoltage. For the protection value, try setting the undervoltage protection value to 11.1V to prevent excessive battery discharge.

5: In places far away from the city, you should also pay attention to anti-theft operations. Due to engineering negligence, many engineering companies fail to carry out useful anti-theft operations, resulting in the theft of batteries, panels and other components, not only affecting normal lighting, but also causing unnecessary property damage. In engineering cases, where most stolen batteries are batteries, burying them underground and cementing them is a useful way to prevent theft, preferably welding and reinforcing the battery case on a light pole.