Black and white grid two-sided module

Abstract

The invention belongs to the field of photovoltaic modules, and particularly relates to a black and white grid two-sided module which comprises front-side glass, a battery piece layer and back-side glass. The front-side glass, the battery piece layer and the back-side glass are sequentially arranged in a stacked manner, a grid coating is arranged on the back-side glass by means of composition andcomprises black gratings, various grids in the black gratings are filled with white reflection blocks, the white reflection blocks cover the lower surfaces of single battery pieces in the battery piece layer in a one-to-one correspondence manner, and the corresponding black gratings cover the lower surfaces of gaps between adjacent battery pieces. The black and white grid two-sided module has theadvantages that the two-sided battery pieces are fused on the basis of black grid modules and are matched with secondary printing, accordingly, the white reflection blocks can be coated in the black grids and are free of light ray absorption, light rays which are transmitted through the battery pieces can be completely reflected to the back sides of the double-sided battery pieces for generating power, and the photoelectric conversion efficiency can be improved.

Description

technical field [0001] The invention belongs to the field of photovoltaic components, in particular to a black and white grid double-sided component. Background technique [0002] As the types of components increase, black backplane components, double-glass all-black panels and black grid components have been developed for the development of roof projects on the market. Due to their high degree of building integration, more and more solid Customers demand this type of module, but the above-mentioned modules mostly use traditional single-polycrystalline single-sided cells. [0003] However, with the development of double-sided batteries (including IBC, HIT, N-type bifacial Bifacial, etc.), due to their double-sided characteristics and the characteristics of the roof, especially the sloped roof itself, it is not possible to make full use of the double-sided battery. Because of the advantage of surface, the double-sided battery has not been applied to the roof. [0004] Its s...

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Problems solved by technology

[0002] As the types of components increase, black backplane components, double-glass all-black panels and black grid components have been developed for the development of roof projects on the market. Due to their high degree of building integration, more and more solid Customers demand this type of module, but the above-mentioned modules mostly use traditional single-polycrystalline single-sided cells

[0003] With the development of double-sided batteries (including IBC, HIT, N-type bifacial Bifacial, etc.), due to their double-sided characteristics and the characteristics of the roof, especially the sloped roof itself, it is not possible to make full use of the double-sided battery. Therefore, the double-sided battery has not been applied to the roof

[0004] Its shortcomings are mainly: the backplane and the double-glass all-black coating completely block the power generation on the back of the double-sided cell, and the black is easy to absorb part of the light, resulting in a reduction in photoelectric conversion efficiency;

[0005] Grid black coating, because the roof is too close to the module, the light passing through the double-sided solar cells will continue to pass through the transparent part of the grid, and the backside efficiency of the double-sided solar cells cannot be exerted

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