Dear Sir/Madam:

As a staff in the photovoltaic industry, Have you ever visit solar factory before? Do you know the whole processes for solar module production?Do you know the Key Point For the Quality control?Today I Will take "you" into a Full-Auto factory to see the all processes,Total 15 steps,Enjoy.

1.Incoming materials inspection:Solar module are made up from these material(Backsheet,EVA,Cells,Glass,Junction Box,Interconnector,Silicon Gel, Aluminum frame),Before production should inspect all these materials, avoiding the bad materials used into the production.

2.Cells sorting:Cells are the most important material for solar module, We should check Facade/size/color discrepancy... Must Use A Grade,Many factories mixed A and B Grade Cells to Down the costs.

3.Welding:Connecting individual cells into strings,normally it should be 10/12 cells for a string,6 strings together make up a 60/72 cells module Click See Video

4.Laying up:(1)put the welded cell strings on top of EVA,Click See Video

(2)The strings are connected in series by interconnector,Click See Video.

5.Firstly EL Testing before laminated: Electroluminescence(EL)imaging is used to detect a multitude of defects in crystalline silicon cell.Micro cracks,Poor welding,Bad finger contacts,Fragments in broken cells... Click See Video.Must strict control. Many factories quality control standard is quite low,Treated The Problem One As Good One.

6.Reworking:This process mainly replace the problem cells(Micro cracks issue)or welding again(Poor welding issue)from the feedback of Firstly EL Testing. Many factories ignore such problems,Refuse to change bad cell to save cost.Because We Can't See Any Difference By Our Eyes.

7.Laminating:The sandwich structure is then laminated under vacuum so as to suck out any air bubbles and a suitable proper laminator temperature allows the thermoplastic EVA to fully embrace the cells.Furthermore, electrical and environmental insulation is assured.Click See Video.

8.Visual Inspecting:Checking the visual look after laminating,to inspect whether have break cells or any dirty stuff during the laminating process, Click See Video.

9.Framing:Inserting the laminated module in the frame mounting cavities, properly filled with silicone gel sealant and punched aluminum profiles with an assembly machine.Click See Video.

10.Junction Box Assembly:The Junction Box is placed on the back side of the module fixing it by a proper amount of silicone gel.The four ribbons coming out from the laminated module are inserted and fixed in the dedicated tight connection clamps.Click See Video.

11.Safety Testing:Need machines to check this module safety from three respects, Grounding resistance test, Insulation&withstand test,Insulation resistance test.

12.Cleaning:After the framing and mounting the Junction Box,The silicon gel needs a proper solidification time for drying and acquire its standard strength and weather resistance,normally it should be around 4-8 hours. After curing, the excess silicone gel is removed with ethyl alcohol.Click See Video.

13.I-V Testing:After the solidification of the silicone gel,the module can be taken under the electrical IV test.During this test,all the main electrical parameters of the module are measured.The test is performed using best quality AAA-Class Sun Simulator,ensuring to the customer true electrical parameters measured on the module and furthermore reported on the flash-list.Click See Video. Many factories Put Fake Lable On the module, Like The Real power is 320W, But They label 330W And Sell With 330W.So They Can offering a Better Price Compare with Factories supply Real 330W Power.QXPV Solar Panels Output Will always Positive(+0-5W).

14.Secondly EL Testing After laminate: This process mainly check the potential defect problem under the laminating pressure.Click See Video. Have Micro cracks,Poor welding,Short Circuit etc Problems,This Panel Should Downgrade as B Because there is no way to repair,it's finished product,But Many factories Mixed B Grade and A Grade, Selling Customers With "A" Grade to offering Good Price.

15.Final Inspecting and Packing: Checking whether still have some dirty stuff and the position of labeling,In the end, wrap the protector on the four corners and packed into a cartoon box.





About QXPV Solar:

QXPV Solar founded in 2005,go public in 2016(stock code:835941),is one of A world leading solar Cell&Module manufacturer (China Top30 Solar Panel Manufacturer, LessTen Both Have GW Capacity and 14Years Solar Industry Producing history).First batch of company obtain TUV and earliest bacth of company listed in MIIT China.Till 2018,QXPV already delivered 4GW solar modules over 52 countries.Have 4 module factory(daily produce 10,000pcs), 2 solar cell factory(daily produce 300,000pcs),QXPV Work with 5 Tier 1 Factories like Jinko,Trina,Canadian etc and 5 EU Top Solar brands like Krannich, Axitec etc.Top Quality With Good price is our advantage.

Email:smith@nbqxsolar.com

Mobile/whatapp/Wechat ID:+86-17888242422

Thanks for reading this article,have any question give your comments.

Written By Smith

2018.8.12.20:14