Processing method for avoiding hot spot effect of solar cell module

A solar cell, hot spot effect technology, applied in electrical components, sustainable manufacturing/processing, circuits, etc., can solve problems such as affecting appearance quality, affecting conversion efficiency, and reducing the quality and performance of solar modules

Inactive Publication Date: 2008-07-23
张二建
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  • Abstract
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  • Claims
  • Application Information

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 e

Method used

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Embodiment Construction

[0011] Describe the processing procedure of the present invention below:

[0012] (1) Cell sorting: Screen the appearance and color of cells, pick out defective products, and make qualified cell components;

[0013] (2) Dip-coating treatment of interconnection strips: take an appropriate amount of interconnection strips and lay them flat in the mesh basket. Minutes, the best time is 6.5 minutes The flux can be selected from "Wuxi Asahi Solder Technology Co., Ltd." ANX-3012 type flux; take the net basket out of the soaking pool and put it on the shelf to dry for 2 to 3 minutes. The best time is 2.5 minutes; then use vacuum equipment to dry for 2 minutes to 3 minutes, the best time is 2.5 minutes;

[0014] (3) Front side welding: Weld the interconnection strip processed in step 2 on the busbar on the front side (negative pole) of the battery. no later than 8 hours;

[0015] (4) String welding: connect a certain number of positively welded battery pieces in series to form a ba...

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PUM

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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 ...

Claims

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Application Information

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IPC IPC(8): H01L31/18
CPCY02P70/50
Inventor 邵燕瑛顾志研
Owner 张二建
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