Cleaning and cooling device for silicon wafer before printing in solar battery cell preparation process

Abstract

The invention relates to the technical field of preparation of solar battery cells and in particular relates to a cleaning and cooling device for a silicon wafer before printing in a solar battery cell preparation process. The cleaning and cooling device comprises a first belt conveying device and a second belt conveying device; a bracket is arranged between the first belt conveying device and the second belt conveying device; a platform is arranged at the top of the bracket; the platform is rotatably connected with a rotary table; a motor is fixed on the lower surface of the platform; a first air cylinder and a second air cylinder are symmetrically arranged on the lower surface of the rotary table; rotary air cylinders are fixed at stretching-out ends of the first air cylinder and the second air cylinder; supporting rods are fixed at output ends of the rotary air cylinders; a plurality of suction discs are fixed on lower surfaces of the supporting rods; a fan is fixed at the side of the bracket. According to the cleaning and cooling device provided by the invention, the conveying efficiency of the silicon wafer is not hindered and impurities on the surface of the silicon wafer are completely removed; the probability that a screen printing plate is punctured is reduced and the temperature on the surface of the silicon wafer can be greatly reduced, so that the volatilization speed of organic matters of slurry in the screen printing plate is reduced and a relatively good printing performance can be kept.

Description

technical field [0001] The invention relates to the technical field of solar cell preparation, in particular to a cleaning and cooling device for silicon wafers before printing in the solar cell preparation process. Background technique [0002] The preparation process of crystalline silicon solar cells mainly includes: cleaning, removing damaged layer, texturing, diffusion, junction making, etching, deposition of anti-reflection film, printing, sintering, and cell test. Among them, printing is an important process in the production process of crystalline silicon solar cells. When the silicon wafer is transported to the printing process in the previous process of printing, the temperature of the silicon wafer itself is high and foreign matter is easy to adhere to the surface. On the one hand, if the surface of the silicon wafer has Impurities are easy to puncture the screen or crack the silicon wafer, and the service life of the screen will have a great impact on the product...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: In order to solve the problem of poor cooling and cleaning effect of the existing silicon wafers before printing, and the problem that foreign matter is easy to remain on the silicon wafers, a cleaning and cooling device for silicon wafers before printing in the solar cell production process is now provided

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