Light photovoltaic module

Abstract

The present invention relates to a light photovoltaic module. The light photovoltaic module comprises a transparent front plate, a first package layer, a solar cell, a second package layer and a backplate which are arranged in order in a stack mode. The back plate comprises a first substrate layer, a honeycomb core layer and a second substrate layer which are arranged in order in a stack mode, the first substrate layer and the honeycomb core layer and the second substrate layer and the honeycomb core layer are spliced by employing adhesion agents, the first substrate layer is located betweenthe second package layer and the honeycomb core layer, the first substrate layer is a resin insulation layer or a metal layer, when the first substrate layer is the metal layer, the light photovoltaicmodule further comprises a first insulation layer arranged between the second package layer and the first substrate layer. The back plate of the light photovoltaic module employs a back plate with aporous honeycomb structure to allow the light photovoltaic module to be light in weight, to be easy to install, to meet the high-load requirement and to extend the module application range, and therefore, the light photovoltaic module has larger advantages on the application of large-scale projects such as a distributed power station project.

Description

technical field [0001] The invention belongs to the field of solar cells, and relates to a photovoltaic component, in particular to a lightweight photovoltaic component. Background technique [0002] Photovoltaic modules, also called solar panels, generate electricity through the "photovoltaic effect", which is the core part of the solar power generation system. At present, mainstream photovoltaic modules are crystalline silicon solar modules, including polycrystalline and monocrystalline, accounting for more than 95% of current photovoltaic modules. The aluminum frame is the frame and plays a supporting role and fixed, the weight is about 12kg / m 2 ;Another packaging solution is to use glass / encapsulation film / battery / encapsulation film / glass for encapsulation, but without using metal aluminum frame, the weight is also about 12kg / m 2 . With the gradual rise of distributed power generation, conventional components cannot be used in some distributed projects due to load-bea...

AI Technical Summary

Problems solved by technology

The reason for the PID failure of solar cell modules is currently a more consistent view: when the module is under high temperature, high humidity and strong voltage, metal ions such as K, Na, Ca, etc. released from the glass will be released from the EVA under the action of an external electric field. Acetate ions produced by hydrolysis are enriched on the surface of the battery and gradually destroy its PN electrode, resulting in battery failure

In the CN 106449824 A patent, because the migration of sodium ions in the glass cannot be avoided, the anti-PID performance of this packaging solution still needs to be verified, and different types of POE have different effects on its anti-PID performance

[0006] In the Chinese patent with the publication number CN 106129148 A, it is proposed to use methyl methacrylate as the base material and benzoyl peroxide as the initiator to plastic-enclose the batteries connected in series by chemical cross-linking. Although this solution reduces the overall weight, but the process is difficult, the load resistance performance needs to be verified, and the water blocking performance of the transparent front plate needs to be considered. output power attenuation

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