Packaging film and photovoltaic modules

Abstract

The invention provides an encapsulating adhesive film and a photovoltaic module. The encapsulation adhesive film includes: a first adhesive film base and a plurality of organic high-refractive-index parts, the organic high-refractive-index parts are arranged on one surface of the first adhesive film base at intervals, and the organic high-refractive index parts are connected to the encapsulated solar cells One-to-one correspondence, the refractive index of the first adhesive film base is 1.45-1.50, the refractive index of the organic high refractive index part is 1.49-1.8, and the refractive index of the organic high refractive index part is higher than that of the first adhesive film base. In the present application, a material with a higher refractive index is arranged on one surface of the first adhesive film substrate to better match the refractive index of the battery sheet, thereby effectively improving the light utilization rate. At the same time, since the organic high-refractive-index portion of the encapsulating adhesive film of the present application is disposed on the surface of the first adhesive film base, the structure is more stable, and the problem that the refractive index cannot be effectively improved due to agglomeration of additives is avoided.

Description

Packaging film and photovoltaic modules technical field The present invention relates to the technical field of photovoltaic module encapsulation film, in particular, to a kind of encapsulation film and photovoltaic assembly pieces. Background technique In photovoltaic cells, sunlight passes through the upper layer of tempered glass, through the encapsulation film, and is converted into electricity from light energy on the silicon wafer. Yes, theoretical studies show that if the refractive index of the encapsulation material between the tempered glass and the cell is the geometrical plane of the material on both sides The average value, the reflectivity is 0, and the solar cell utilization efficiency reaches the maximum value. traditional solar module packaging The refractive index of the material is smaller than that of the glass, so that when the sunlight is transmitted from the glass and then passes through the EVA, the refraction angle will be corresponding be...

AI Technical Summary

Problems solved by technology

[0008] The main purpose of the present invention is to provide an encapsulation adhesive film and a photovoltaic module to solve the problem of low refractive index of the adhesive film structure in the prior art

Images