Vacuum laminating machine for photovoltaic cell production

Abstract

The invention relates to the technical field of photovoltaic cell manufacturing, and discloses a vacuum laminating machine for photovoltaic cell production. The machine comprises an upper cover plate and a heating plate, a silica gel pressing plate is arranged below the upper cover plate, an upper vacuum cavity is formed between the upper cover plate and the silica gel pressing plate, and a photovoltaic cell assembly is placed above the heating plate. A base layer air bag, a center pressure pipe and an expansion air bag are arranged in the upper vacuum cavity, and the air circulation direction among the base layer air bag, the center pressure pipe and the edge pressure pipe is cooperatively controlled through the air circulation effect among the expansion air bag cavity formed by the base layer air bag and the expansion air bag, the center pressure pipe and the edge pressure pipe, so the battery piece of the photovoltaic battery assembly and the edge of the assembly are pressed and fixed firstly, the battery piece is prevented from moving due to the mobility of EVA in the laminating process, meanwhile, the edge warping problem caused by non-uniform heating of glass located above the EVA in the laminating process is also prevented, and the purpose of improving the quality of the photovoltaic battery assembly is achieved.

Description

technical field [0001] The invention relates to the technical field of photovoltaic cell manufacturing, in particular to a vacuum laminator for photovoltaic cell production. Background technique [0002] The laminator is an important packaging equipment in the production process of solar panels. Under certain vacuum and hot pressing conditions, the EVA in the solar cell module is first melted evenly, and then the EVA is solidified at room temperature to bond the solar cell module. A device as a whole. In the actual production process, the number of air bubbles in the battery components is the most common and fatal quality problem of the battery board. The existence of air bubbles affects the appearance of the battery board, and more importantly, shortens the life of the battery board. [0003] Since EVA releases a large amount of acid gas when it is melted and bonded by heat, although most of the gas is drawn out during the vacuum stage, some gas is still trapped in the EVA...

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the use of the existing vacuum laminator proposed in the background technology, the present invention provides a vacuum laminator for photovoltaic cell production, which can drive away air bubbles, prevent glass edge warping and prevent cell displacement The advantage of solving the problems raised in the above-mentioned background technology

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