Metal printing tabletop for solar cells

Abstract

The invention discloses a metal printing tabletop for solar cells. The metal printing tabletop comprises an upper metal tabletop, a lower metal tabletop, glass and an LED (light emitting diode) backlight lamp. The upper metal tabletop and the lower metal tabletop are in vertically opposite arrangement; the upper metal tabletop is provided with a groove structure which penetrates through the upper and lower surfaces of the upper metal tabletop; the groove structure comprises an upper groove and a lower groove sequentially formed from top to bottom, and the upper groove is wider than the lower groove; the glass is fixed into the upper groove, and the width and the length of the glass are matched with those of the upper groove respectively, and the thickness of the glass is matched with the depth of the upper groove; the LED backlight lamp is fixedly arranged at a position, opposite to the lower groove, of the lower metal tabletop and protrudes into the lower groove, and the size of the LED backlight lamp is matched with that of the lower groove; the upper metal tabletop and the lower metal tabletop are mounted vertically to form a whole. The metal printing tabletop for the solar cells has the advantages that flatness of the printing tabletop is improved, fragments generated in a solar cell printing process are reduced, and yield of products is increased.

Description

technical field [0001] The invention relates to the technical field of screen printing for the production of single and polycrystalline solar cells in the photovoltaic industry, in particular to a metal printing table for solar cells. Background technique [0002] Photovoltaic power generation is one of the main ways to use solar energy at present. Because of its cleanness, safety, convenience, and high efficiency, solar photovoltaic power generation has become an emerging industry that is generally concerned and focused on development by countries all over the world. Therefore, in-depth research and utilization of solar energy resources is of great significance to alleviate the resource crisis and improve the ecological environment. [0003] In the solar cell preparation process, screen printing plays an important role in the production process of the positive and rear electrodes and the back electric field of the solar cell. In the screen printing process, the silicon waf...

AI Technical Summary

Problems solved by technology

[0004] At present, there is only one kind of hard screen printing tabletop in China. The light-transmitting glass and LED lights of the hard tabletop are integrated. The level of the glass and the tabletop can be adjusted by adjusting the height of the LED light. This design not only adjusts the level Difficult (requires special tools, specifically a level tester, and complicated adjustments) and long-term use can cause the position of the glass to change, causing print debris

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