Energy saving, environmental protection, low carbon life has become a symbol of the new era. As a new energy, solar energy has been applied in various fields, the most prominent is applied in the city’s road lighting project, but it can also be seen in all aspects of ordinary life, such as solar garden lights, solar energy charging bank, calculator solar cells, solar energy monitoring and so on. Life is always inseparable from the lamp, so now in the consideration of energy saving and environmental protection, many times will choose the solar lamp. Today’s market for solar lamps is a jumble of quality and price (am I right?). What are its price and purchasing techniques? Let’s discuss it together.

First of all, do you at least know the basics of solar lamps before you buy them? If you do not want to understand its basic knowledge and do not want to buy inferior or relatively high price outdoor lighting solar products, want to be a white. Then you can rely on your luck or the conscience of the merchants, after all, the market is not full of unscrupulous merchants and inferior products, right? Besides, your luck isn’t as bad outdoor lighting solar as you thought, is it? You’re not gonna make a outdoor lighting solar hole every time, are you? Of course the tuhao can be ignored, you can choose the most expensive! But not necessarily the best.

Let’s cut the crap and get to the point. Solar lamps are, after all, a type of lighting, but not one that is connected directly to the mains network and then switched on. Solar lamp is the use of solar panels (photovoltaic panels) to convert light energy into electricity, through the charge and discharge controller to store the energy in the battery, and then the battery through the charge and discharge controller to light LED lamp beads (light ordinary bulbs can also be, but this method has been eliminated) to achieve the lighting function. Of course, the development of solar lamp now also has a lot of auxiliary functions, such as human body induction, voice control function, light control function and so on. Through these functions to achieve: people come to light, people go off the light or light at night and not light in the day and so on some application scenarios. Such a design is to facilitate some scenes in life, in fact, the more important point when saving energy.

From the above basic knowledge introduction, we can realize that the basic components  light solar  of the solar lamp are:

1. Solar photovoltaic power generation
2. The part of the battery that stores electrical energy
3. LED lamp bead lighting part
4. Charge and discharge controller
5. Shell bracket part

The first three parts are the light solar  basic components and also the key components, so let’s analyze these three parts again, the performance of a sun lamp depends on these aspects.

A, solar photovoltaic panel: in ordinary life we see the solar panel is roughly like a square or rectangular board, in fact, the photovoltaic panel is also a lot of components. The basic components of a qualified photovoltaic panel are:

1. Surface toughened glass
2. Silicon wafer
3. Back substrate
4. Aluminum frame and junction box

These structural components are important for a qualified photovoltaic panel, but the most important is the cell, the crystalline silicon photovoltaic panel. The solar panels on the market today are divided into two kinds of crystalline silicon materials: monocrystalline silicon and polysilicon. The production process and performance parameters of monocrystalline polysilicon are not described here. 

A brief understanding of the difference between the two is good. Monocrystalline silicon and polysilicon are two different substances. The chemical term of polysilicon is glass, and high purity polysilicon material refers to high purity glass. Monocrystal silicon is the real raw material for solar photovoltaic cells and, of course, the main raw material for semiconductor chips. 

Because the production of monocrystalline silicon raw materials are rare and the process is more complex, so the disadvantage of monocrystalline silicon is low yield and high price. But on the other hand, if you buy a monocrystalline silicon photovoltaic panel for the same price, then you should congratulate yourself on the profit, right? 

However, we should also carefully identify not to buy the recycling of the second hand board or the refurbished disassembly board, after all, be careful, there is no moral bottom line profiteers.

So how to distinguish monocrystalline silicon when polysilicon light splitter? Don’t rush to read on! Simply put: the difference between monocrystalline silicon and polysilicon is that their atomic structure is arranged differently, monocrystalline silicon is arranged in order, polysilicon is disordered arrangement. 

This is mainly determined by their processing technology. Polysilicon is produced by casting method, which means that the raw silicon is directly poured into a pot to melt and shape the production. While monocrystalline silicon is improved by a unique method, the process is a process of atomic restructuring, so the single crystal is reordered combination arrangement. 

So to the naked eye, the surface of monocrystalline silicon is very smooth and orderly. The polysilicon surface looks as if there are a lot of broken glass in it, it looks a little rough, but it is shiny and romantic. Monocrystalline silicon photovoltaic panel has no pattern of dark blue, close to black after packaging. 

The polycrystalline silicon photovoltaic panel has a crystal pattern, just like the pattern of the snowflake crystallization on the flower iron plate, which is generally light blue. This is the difference in appearance between monocrystalline light solar silicon and polysilicon photovoltaic panels. 

Monocrystalline silicon solar cell is one of the fastest solar cells developed at present. Its light solar composition and production process have been finalized, and the products have been widely used in space and ground facilities. The solar cells are made of highly pure solar outdoor lighting monocrystalline silicon (99.999% purity required). 

The photoelectric conversion efficiency of monocrystalline silicon solar cells is about 15%, and the high one can reach 24%, which is the highest photoelectric conversion efficiency of solar cells at light solar present. However, the production cost is relatively large, so it cannot be mass production and widely used. Monocrystalline silicon photovoltaic panels are generally solar outdoor lighting packaged with toughened glass and waterproof resin, so they are durable and their service life can reach 15 or even 25 years. 

The manufacturing process of polycrystalline silicon solar cells is similar to that of monocrystalline silicon solar cells, but the photoelectric conversion efficiency of polycrystalline silicon solar cells is much lower, its photoelectric conversion efficiency is about 12%. Polysilicon solar cells than monocrystalline silicon solar cells production process is simple, the raw material production is also simple, the total production cost is much lower than monocrystalline silicon solar panels. 

So it can be developed in large numbers, and it will be more prevalent in the market. There is polysilicon solar panels than monocrystalline silicon solar panels have a shorter service life, so solar outdoor lighting in summary from the overall cost performance, monocrystalline silicon solar panels or a little better, right?