Solar cell module and electrode extraction method

Abstract

The embodiment of the invention relates to the technical field of solar cells and discloses a solar cell module. In this invention, A solar cell module includes: glass substrate, and a solar cell arranged on the glass substrate, A solar cell includes an electrode layer, A lead-out electrode of that solar cell is for on the electrode layer, the glass substrate includes a first surface carrying thesolar cell, and a side surface connecting the first surface and the second surface, wherein the side surface is provided with an electrode lead-out groove penetrating the first surface and the secondsurface, the electrode lead-out groove is filled with a conductive adhesive, and the conductive adhesive is electrically connected with the lead-out electrode. The invention also provides an electrodeextraction method of a solar cell module. The solar cell module and the electrode extraction method provided by the invention can improve the product yield and reliability of the solar cell, at the same time, the effective area of the solar cell is not reduced, and the light conversion efficiency of the solar cell is ensured.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of solar cells, and in particular to a solar cell component and a method for leading out electrodes of a solar cell. Background technique [0002] Today's global photovoltaic market is dominated by crystalline silicon solar cells, but the rapid consumption of energy resources caused by high-energy-consuming production processes will make society unbearable and will also restrict the larger-scale development of the photovoltaic industry. Therefore, the development of low-cost, new thin-film solar cells is an inevitable trend of the future international photovoltaic industry. CIGS (abbreviation of CuInxGa(1-x)Se2) thin-film solar cells, composed of four elements of Cu (copper), In (indium), Ga (gallium), and Se (selenium) constitute the optimal ratio of chalcopyrite crystal thin-film solar cells The battery is to deposit more than 6 layers of compound semiconductor and metal film mat...

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Problems solved by technology

[0003] The inventors have found that there are at least the following problems in the prior art: glass punching will instantly accumulate a lot of heat, if the punching position is set in the central area of ​​the glass, it will easily cause glass breakage, thereby reducing the product yield; Drilling a hole in the central area of ​​the hole will cause some tiny cracks on the edge of the hole, which will lead to the risk of cracking during later use, thereby reducing the reliability of the solar cell; At least two times, and the diameter is not less than the thickness of the glass, so that the effective area of ​​the cell is reduced, resulting in a lower light conversion efficiency

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