Worse Solar panel after Lamination process

Reasons and Improvement Measures for Problematic Solar panel after Lamination process

			copyright® ZXEVA 2019
Reasons and Improvement Measures for Problematic Solar panel after Lamination process
Description	Problem Analysis	Section	Prevention and Improvement Measures
Fragments appear	1. Because there is no smooth welding in the welding process, there are tin or tin slag piled up, and the battery fragments are crushed when vacuum is pumped.	Single welding, tandem welding.	①、The welding quality should be checked in the welding area, and some targeted training should be given to the staff to make the welding take shape once.
	2. There are cracks in the battery sheet, which displace when laminated vacuum is pumped.	Quality Inspection	②、Strict quality control in infrared detection.
	3. When lifting the module, the gesture is unreasonable, and both hands have been pressed into the cells.	Quality Inspection	③、lamination and control of all links to optimize the gesture of the laminator.
	4. The bending of the lead leads leads to the crushing of the batteries during the vacuum evacuation.	Laminating	④、The direction of the lead should be kept uniformly inward when placing components, so that it is not easy to bend the lead to grooves and debris when laying insulation cloth on it
Bubbles	1、EVA has been cut, put outside too long time, it has absorbed moisture.	Prepare materials	①、 Control the amount of ZXEVA used every day, and let every employee know the daily production tasks.
	2、Vacuum is too short to drive out bubbles under pressure.	Laminating	②、Adjusting the laminating process parameters to make the vacuum pumping time appropriate.
	3、Layer pressure is not enough. Increase the pressure.	Laminating	③、Increase the pressure. (It can be adjusted by laminating time or by laying a layer of high temperature cloth).
	4、 The temperature of heating plate is uneven, which causes curing ahead of time.	Laminating	④、Laminating and padding high temperature cloth to make the components heat uniformly. (The maximum temperature difference is less than 4 degrees).
	5、Oxygen is produced by decomposition of organic peroxides due to long lamination time or high temperature.	Laminating	⑤、Determine the total time of lamination according to the parameters provided by the ZXEVA film company, so as to avoid too long time.
			www.zxsolarpower.com
			copyright® ZXEVA 2019
	6、The presence of dust causes the presence of gases beside dust.	Assembling	⑥、Paying attention to 5S management, especially in the process of paving, try to avoid foreign bodies falling in.
Hair and garbage	Clothing or article fibers in the spare room or paving area are sucked into EVA or backplane due to static electricity.	Assembling	Strengthen 5S management, keep the surrounding working environment clean and tidy, and do personal hygiene diligently. Wear a work cap and don't show your hair.
Insects	fly into EVA or backpsheet in the preparation room and paving area.	Assembling	strengthens the management of insect control and sealing in the workshop to keep the workshop clean and tidy.
Foreign bodies	mainly impurities in materials, or foreign bodies substituted by static electricity when laying.	Assembling	strengthens material feeding inspection and adds anti-static measures.
Welding strip and confluence strip residues	mainly caused by splashing of excess tin-coated copper strip in paving room shears into components.	Assembling	adjusts the original welding strip accordingly.
Short circuit	1、 When laying, the lead baffle is too deviated to connect the two leads.	Assembling	①、adjust the lead spacing of the original baffle accordingly.
Short circuit	2、When single welding, there is residual tin left in the main grid line or the welding strip exceeds the main grid line, which results in short circuit between positive and negative poles in series welding.	Single welding, tandem welding.	②、Standardize welding sequence and do self-inspection and mutual inspection.
Tin slag	Tin slag on the die plate of solder tandem welding, the splashed solder on the welding place	Series welding and assembling	the negative pole flowing upward into the tandem welding section after soldering the single solder battery sheet are helpful to check whether there is tin slag in the tandem welding operation and clean up the residual tin of the solder head in time.
Overall deviation	1、Laminating caused by sloshing when lifting components.	Laminating	①、Standardizing the gesture of lifting components.
Overall deviation	2、The placement of the alignment template is not correct.	Laying and Mirror Inspection	②、Standardize the position of the template. Examine the position of the battery and glass carefully.
Backsheet offset	occurs mainly in components without tape or because....		more information pls email us : SALES@ZXSOLAR.COM

solar panel reasons

reasons-of-unqualified-solar-panel.pdf

Reasons and Improvement Measures for Problematic Solar panel after Lamination process

Description

Problem Analysis

Section

Prevention and Improvement Measures