二、購(gòu)買渠道

是否從正規(guī)大品牌廠家的授權(quán)經(jīng)銷商代理商處購(gòu)買，并核對(duì)檢查質(zhì)保合同、發(fā)票等，這些決定了你是否能夠購(gòu)買到A級(jí)組件的同時(shí)更能享受到售后服務(wù)和后續(xù)25年的質(zhì)保服務(wù)。

隨著光伏發(fā)電的興起，市場(chǎng)上也增加了許多組件廠。有些組件廠在光伏組件生產(chǎn)的過(guò)程中都會(huì)有嚴(yán)格的出廠檢驗(yàn)，將組件按照性能和外觀分為A、B、C、D等級(jí)。而有些小型的組件廠僅僅是跟隨潮流，收購(gòu)舊的電池片，然后進(jìn)行加工轉(zhuǎn)手賣出。對(duì)于剛?cè)胄械呐笥褋?lái)說(shuō)就會(huì)很容易購(gòu)買到這些B級(jí)、C級(jí)組件，用不到幾年就壞掉了。而A級(jí)組件性能優(yōu)異，壽命至少在25年。一般來(lái)說(shuō)，能夠在市面上光明正大流通的也就只有A級(jí)組件。

那這A、B、C級(jí)組件一般都被應(yīng)用在哪些方面呢？

A級(jí)組件：主要用于地面電站、分布式電站、戶用系統(tǒng)等，25年以上壽命 。

B級(jí)組件：主要用于路燈、離網(wǎng)系統(tǒng)、電瓶車等，5年壽命 。此類組件是A類降級(jí)組件或用B級(jí)材料生產(chǎn)的，價(jià)格在3元左右。

C類組件：主要用于用電不發(fā)達(dá)地區(qū)，如偏遠(yuǎn)地區(qū)、阿富汗、中東、南非等，壽命不詳。

因此，在選擇光伏電站組件時(shí)，不可看重蠅頭小利，為節(jié)省成本而不顧組件質(zhì)量，也要擦亮眼睛，不被不正規(guī)商家蒙騙。

Class A component: Class A battery is the highest quality grade, the component can use the battery;  

Class B components: Class B cells slightly lower than class A, the components can be degraded to use the complete cell;  

Class C component: Class C battery is a piece with serious bad appearance and missing Angle. It is only suitable for making small parts after cutting the battery and supplying to customers with special needs.  

Class D components: Class D batteries are available in fragments for customers with special needs or special treatment.  

The picture  

So how do we know?  

Judge the grade of solar panels from the following two points:  

First, appearance judgment  

1. Look at the surface  

Take a careful look at the toughened glass surface, the products of small manufacturers are relatively rough, and the silicone residue on the surface will reduce the power generation efficiency of the panel.  

2. Look at the battery  

Check the battery for cracks and hidden cracks.  There are many irregular manufacturers splicing broken battery pieces, which has great risks and hidden dangers, and will affect the safe use of the whole panel.  

The picture  

3. Look at the back  

Look at the mass of pressure on the back.  If there are uneven conditions after pressure, such as bubbles, wrinkles and so on, it is regarded as relatively inferior quality products.  

4. Look at the border  

Whether flat or not.  Due to the low threshold to enter the solar panel industry, many small manufacturers use artificial framing, the shape is not a strict rectangle, the firm degree is also greatly reduced.  

5, look at silica gel  

See whether the silica gel around the back is evenly distributed and whether it closely penetrates the gap between the backplane and the frame.  

6. Look at welding  

Carefully observe whether the series welding of the battery is leaky.  At the same time also want to see if the battery is arranged neatly.  

The picture  

7. Look at the junction box  

Finally, see whether the junction box is firm, whether the junction box cover can be firm, closely stuck on the junction box, and whether the outlet wire lock head rotation freely, whether to tighten.  

Second, purchase channels  

Whether you buy from an authorized dealer or agent of A major brand manufacturer, and check the warranty contract, invoice, etc., determines whether you can buy class A components and enjoy better after-sales service and subsequent 25 years of warranty service.  

The picture  

With the rise of photovoltaic power generation, the market has also increased the number of module plants.  Some module factories will have strict factory inspection during the production of photovoltaic modules, which will be divided into A, B, C and D grades according to performance and appearance.  Some small component manufacturers are simply following the trend, buying old batteries and processing them for resale.  It is easy for friends to buy these B-class and C-class components, which will be broken in less than a few years.   Class A components, on the other hand, perform well and last at least 25 years.  In general, a-level components are the only ones that can be traded in the open market.  

So what are these A, B, and C components used for?  

Class A components: mainly used in ground power stations, distributed power stations, household systems, etc., more than 25 years of life.  

Class B components: mainly used for street lamps, off-grid systems, battery cars, etc., 5 years life.  This kind of component is class A degraded component or produced with class B material, the price is about 3 yuan.  

Class C components: mainly used in underdeveloped areas, such as remote areas, Afghanistan, the Middle East, South Africa, etc., life unknown.  

Therefore, when choosing photovoltaic power station modules, do not value petty profits, regardless of the quality of components to save costs, but also to sharpen your eyes, not to be cheated by irregular businesses.