Screen printing plate and solar battery manufacturing method

Abstract

The invention discloses a screen printing plate and a solar battery manufacturing method. The screen printing plate comprises a piece of screen cloth and a block layer fixed at the screen cloth, wherein the block layer comprises a pattern part and a non-pattern part which surrounds the pattern part, and the thickness of the pattern part is smaller than that of the non-pattern part. Through designing the block layer of which the pattern part thickness is smaller than the non-pattern part thickness, the screen printing plate is capable of lowering the height difference at the joint between back silver and back aluminum of a solar battery manufactured through the screen printing plate and improving the bridging effect of the back aluminum, and accordingly the cold solder joint problem of the back silver of the component end due to the bridging effect can be improved. By means of the screen printing plate, the quality of the solar battery can be improved. The screen printing plate is simple in structure, easy to manufacture and suitable for industrial production. The screen printing plate and the solar battery manufacturing method effectively overcome the disadvantages of the prior art and have high industrial utilization value.

Description

technical field [0001] The invention belongs to the field of solar cells, in particular to a method for making a screen plate and a solar cell. Background technique [0002] Solar cells are devices that directly convert light energy into electrical energy through the photoelectric effect or photochemical effect. Solar cell power generation is a renewable and environmentally friendly power generation method. Greenhouse gases such as carbon dioxide will not be produced during the power generation process, and will not pollute the environment. Since solar cells are clean, non-polluting, inexhaustible and inexhaustible, more and more attention has been paid to solar cells. At present, solar cells are widely used in daily power generation, transportation, aviation, communication, petroleum, marine and other fields. [0003] At present, silicon solar cells are the most widely used, and its manufacturing process has also been standardized. The main steps are: chemical cleaning and ...

AI Technical Summary

Problems solved by technology

[0007] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a method for making a screen and a solar cell, which is used to solve the problem of solar cell quality degradation caused by the bridging effect during the existing screen printing in the prior art. And problems such as virtual soldering at the module end

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