Horizontal coating device for preparing HIT crystalline silicon solar cell

Abstract

The invention discloses a horizontal coating device for preparing an HIT crystalline silicon solar cell, which comprises a cell, a tank body, a transmission mechanism, an anode mechanism, a cathode mechanism, a spraying mechanism, an inflating mechanism, a waste discharging mechanism, a circulating filtering mechanism and a liquid blocking mechanism, the anode mechanism and the cathode mechanism are arranged in the tank body and are connected with the rectifier to generate an electric field, the spraying mechanism, the inflating mechanism and the circulating filtering mechanism uniformly deposit copper ions in the tank to grid line electrodes of a plurality of columns of battery pieces, and the circulating filtering mechanism is connected into the spraying mechanism after being circularly filtered by the circulating pump and the filter through the overflow gathering port. And the inlet section and the outlet section of the tank body are respectively provided with a liquid blocking mechanism. By adopting the horizontal coating, the conversion process of battery pieces at the feeding and discharging ends of electroplating equipment between the horizontal direction and the vertical direction is omitted, a hanging tool is not used, the piece breaking rate is reduced, the electroplating quality is improved, the production yield is increased, and the labor cost and the production cost are reduced.

Description

technical field [0001] The invention relates to the technical field of manufacturing HIT crystalline silicon solar cells, in particular to a horizontal coating device for preparing HIT crystalline silicon solar cells. Background technique [0002] With the expansion and rapid development of the photovoltaic industry, as well as policy adjustments, the market has become increasingly demanding on the cost of solar cells, forcing each process to reduce equipment manufacturing costs, simplify production and preparation steps, and adopt more efficient implementation methods. At present, the vast majority of solar cells are printed with silver paste, which accounts for more than 25% of the total cost of producing solar crystalline silicon cells. Obviously, the use of cheap copper-tin metal to replace silver paste is of great significance to reduce the production cost of crystalline silicon solar cells. The use of copper-tin grid is a good way to replace silver paste, and the elec...

AI Technical Summary

Problems solved by technology

Our company has developed a vertical continuous electroplating equipment and applied it to the actual production of HIT solar cells. The commissioning test shows that this approach is correct and feasible, but in the entire copper-tin grid forming process, the carrier hanger is used as a consumable, which has a great impact on reducing Maintenance costs and increasing equipment availability present challenges

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