Solar cell film plating equipment and film plating method

Abstract

The invention provides solar cell film plating equipment and a film plating method thereof. In the prior art, a solar cell can be transferred to electroplate liquid for electroplating by using an externally connected electroplating power supply or through a simple rolling wheel, so that the problems of high probability of damage to the solar cell and poor film plating quality exist. The solar cell film plating equipment provided by the invention comprises a film plating slot, a to-be-plated solar cell transmission module, and a film plating light source, wherein the transmission module is provided with a plurality of upper rolling wheel and a lower rolling wheel which are arranged in a matched manner and transfer the solar cell to be plated in an identical linear velocity, the solar cell to be plated forms an electroplating loop with electroplating liquid through an upper rolling wheel, the solar cell to be plated is transferred into the film plating slot horizontally through the to-be-plated solar cell transmission module and is partly submerged into the electroplating liquid, the film plating light source irradiates the light receiving surface of the to-be-plated solar cell and generate photoproduction electrical energy thereon, and the to-be-plated area of the to-be-plated solar cell is plated through the photoproduction electrical energy. In the invention, the reliability and the efficiency of the film plating are improved, the scrap rate in solar cell film plating is lowered, and that the externally connected electroplating power supply is required can be avoided.

Description

technical field [0001] The invention relates to the field of solar cell manufacturing, in particular to a solar cell coating device and a coating method thereof. Background technique [0002] In the field of solar cell manufacturing, the metallization process is a very important key process, which directly forms the electrodes that extract the electric energy generated by the solar cell and has a great impact on the efficiency of the solar cell. In the current large-scale solar cell manufacturing, screen printing is usually used to realize the metallization process of solar cells, but the height-width ratio of the grid lines formed by screen printing is low, resulting in a relatively small area of ​​the light-receiving surface of the solar cell that is shaded by the grid lines. In addition, the series resistance of the solar cell is relatively large. Electroplating can effectively reduce the shading of grid lines and effectively reduce the resistance of grid lines and the s...

AI Technical Summary

Problems solved by technology

[0008] Therefore, how to provide a solar cell coating equipment and its coating method to avoid short circuit caused by poor plating by using light-induced electroplating, and to avoid the need to connect an external electroplating power supply and reduce the electroplating fragmentation rate of solar cells has become a technical problem to be solved urgently in the industry.

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