Jig device for improving silver paste filling quality and silver paste filling method

Abstract

The invention relates to a jig device for improving silver paste filling quality and a silver paste filling method, and the jig device is used for improving the silver paste filling quality of a through hole in an MWT battery silicon wafer, and comprises a horizontally arranged carrier mechanism which comprises a U-shaped carrier which does not react with silver paste and a plurality of injection holes; the U-shaped carrier covers the inner wall of the carrier mechanism and is used for accommodating silver paste; the injection holes penetrate through the bottom of the U-shaped carrier, and the number of the injection holes is matched with the number of through holes in an MWT battery silicon wafer; the pushing mechanism is arranged above the carrier mechanism, and the width of the pushing mechanism is smaller than that of the opening of the U-shaped carrier; and the pushing mechanism comprises a pushing handle, a pushing plate and a partition plate which does not react with the silver paste and is used for downwards extruding the silver paste in the U-shaped carrier to enable the silver paste to be attached to the silicon wafer and fill the through hole, and the pushing handle, the pushing plate and the partition plate are sequentially connected from top to bottom. Through the above arrangement, the problems that at present, silver paste is not fully filled in a silicon wafer through hole of an MWT battery, and the filling quality is poor can be solved.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a jig device and a silver paste filling method for improving the filling quality of silver paste. Background technique [0002] In the MWT (Metal Wrap Through) battery, the front electrode is guided to the back of the battery by perforating the silicon wafer, which can not only reduce the shading area of ​​the front electrode, improve the conversion efficiency of the battery, but also improve the aesthetics of the photovoltaic module. . [0003] Therefore, MWT cells are suitable for use in the BIPV (Building Integrated Photovoltaic) industry, which has seen increasing demand in recent years. Among them, the filling quality of the silver paste in the through-hole of the silicon wafer has a significant impact on the cell efficiency and module power. [0004] In the prior art, the traditional screen printing process is very likely to cause insufficient silver paste filling i...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the above-mentioned technical problems, the object of the present invention is to provide a jig device and a silver paste filling method for improving the filling quality of silver paste. Issues with poor fill quality

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