Processing method for avoiding hot spot effect of solar cell module

Abstract

The invention provides a method for processing a solar cell module, which avoids a hot spot effect. The appearance quality and the various properties of the solar cell module which is processed through the method are greatly improved, the packaging power loss and the power attenuation are effectively reduced, and the hot spot effect which is produced during a solar system is used is effectively avoided. The steps comprises battery sorting, interconnector dip coating treatment, face up bonding, series welding, toughened glass-EVA-battery plate-EVA-TPT laminated processing, intermediate inspection, lamination, trimming, the installment of aluminum alloy frame, the installment of waterproof terminal box, appearance cleaning, module testing, pressure test and visual inspection. The invention is characterized in that the methods of the interconnector dip coating treatment are that moderate interconnectors are paved in a net basket, the interconnectors are straightly put, then the net basket which is equipped with the interconnectors is socked in a flux for 5-8 minutes, the net basket is taken out from a soaking pool and is put on a shelf to filter for 2-3 minutes, and then the net basket is pumped by pumping vacuum equipment for 2-3 minutes.

Description

technical field [0001] The invention relates to a processing method of a solar battery module which avoids the hot spot effect. Background technique [0002] In the processing of solar cell components, in the packaging process, white spots and virtual soldering often occur on the cells after welding. This is a very common process phenomenon. When it is melted, exhaust gas will be generated, and the laminated components will generate bubbles, and will react with EVA to produce chemical substances, which will reduce the electrical performance and life of the components. When this happens, there are two common ways to deal with it: [0003] 1. For slight flux residues, it is generally wiped with a rag dipped in absolute ethanol. But there are the following disadvantages: ethanol will inevitably make the cell absorb moisture during the wiping process, which will affect the conversion efficiency and increase the fragmentation rate. After wiping with a rag, secondary pollution ...

AI Technical Summary

Problems solved by technology

But there are the following disadvantages: ethanol will inevitably make the cell absorb moisture during the wiping process, which will affect the conversion efficiency and increase the fragmentation rate

After wiping with a rag, secondary pollution will occur, and the chemical substances on the rag will remain on the battery sheet, which will also potentially affect the appearance quality and reduce the electrical performance

[0004] 2. For the hardened flux crystals, absolute ethanol cannot be used to completely remove them. The only way to eliminate the residual flux is to volatilize it again through high temperature.

[0005] As mentioned above, for the white spots that have been produced, any method of elimination will have a negative impact and directly reduce the quality and performance of solar modules