Photovoltaic module hot pressing curing method and pressing equipment used for hot pressing curing

Abstract

The purpose of the present invention is to solve the problem that the prior art photovoltaic module packaging method and packaging equipment are easy to produce cavities at the corners of the battery module when the viscosity of the adhesive is high when the photovoltaic module is packaged, so that the performance of the battery module is affected. Provide a The press equipment used for hot-press curing of photovoltaic modules and the hot-press curing method of photovoltaic modules adopt the following hot-press curing method of photovoltaic modules, the layered parts that have completed the vacuum heating and pressing step are transferred to the second lower chamber, and the curing chamber is closed Finally, fill compressed gas into the upper chamber 2, press the flexible pressure member against the upper surface of the photovoltaic module to heat and press the photovoltaic module to cure, adopt the method and equipment of the present invention to heat and pressurize the photovoltaic module to cure, in a non-vacuum state The lower chamber is filled with compressed gas, and the compressed gas exerts positive pressure on the flexible pressure member from above the flexible pressure member. When the photovoltaic module is under pressure, the adhesive moves slowly, which can reduce the side cavity and reduce the generation of holes. .

Description

technical field [0001] The invention relates to a hot-press curing method for a photovoltaic module and pressing equipment used for hot-press curing. Background technique [0002] When pressing layered components, especially encapsulating photovoltaic components, it is necessary to encapsulate the smallest unit, the photovoltaic component. At present, the conventional packaging method is to first vacuum hot press the photovoltaic component above the melting temperature of the adhesive layer. , and then carry out vacuum hot-press curing at the curing temperature of the adhesive layer. Correspondingly, the equipment includes two vacuum laminators arranged front and back, each vacuum laminator includes an upper box and a lower box, and the upper box and the lower box are closed to form The sealed chamber is provided with a flexible pressure member in the sealed chamber. The flexible pressure member divides the sealed chamber of the vacuum laminator into an upper vacuum chamber ...

AI Technical Summary

Problems solved by technology

The photovoltaic module packaging equipment and packaging method using the prior art structure, in order to remove the air bubbles in the photovoltaic module, vacuumize the photovoltaic module by vacuuming during the lamination process and curing process, but in the process of vacuumizing During the process, since the temperature of the photovoltaic module has reached the melting temperature of the adhesive layer after hot pressing, the adhesive at the edges and corners is easy to flow when the vacuum low-temperature hot pressing is used to squeeze out the air bubbles in the photovoltaic module. , the adhesive between the layers of the photovoltaic module is partially reduced, and because the adhesive used in some photovoltaic modules has high viscosity and poor fluidity, the reduced part of the adhesive is not easy to be replenished, forming a local cavity part, at the corners and edges of the module Cavitation occurs at the place, forming a foam-like structure, causing quality defects and affecting the performance of photovoltaic modules

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