Double-glass light transmission assembly

Abstract

The invention relates to the field of photovoltaic technology, and particularly relates to a double-glass light transmission assembly, which comprises front plate embossing coating toughened glass, a first packaging layer, a cell assembly, a second packaging layer and back plate light transmission toughened glass. Wherein the cell assembly is composed of a plurality of cell strings and a split junction box; the plurality of cell strings are connected with the split junction box; the cell assembly is arranged between the first packaging layer and the second packaging layer; the split junction box is attached to the back plate light transmission toughened glass; the back plate light transmission toughened glass at least comprises a positive electrode wire outgoing hole and a negative electrode wire outgoing hole; and the number of the cell strings is an odd number. Through using an odd number of cell strings, the light transmission rate of the double-glass light transmission assembly can be effectively improved; through arranging the positive electrode wire outgoing hole and the negative electrode wire outgoing hole in the back plate light transmission toughened glass, the material is effectively saved, the cost is greatly reduced, and the structure is reasonably designed; and compared with the existing light transmission-type assembly, the light transmission assembly of the invention has the advantages that the power is improved; visible areas are more uniform; the wind loss value is lower; and the series resistance is lower.

Description

technical field [0001] The invention relates to the field of photovoltaic technology, in particular to a double-glass light-transmitting component. Background technique [0002] Building Integrated Photovoltaic BIPV (Building Integrated Photovotaics) is a new concept of using solar energy to generate electricity in recent years. It lays photovoltaic arrays on the building envelope (wall or roof) to generate electricity. This system has many advantages, such as effective use of buildings The external surface does not require additional land or other facilities; save external decoration materials (glass curtain wall agricultural greenhouses, etc.), the appearance is more attractive, and reduce power demand; reduce summer air conditioning load, improve indoor thermal environment, etc. The contradiction between energy supply and demand in my country is becoming increasingly fierce. The new energy industry represented by photovoltaic power generation will take on the important ta...

AI Technical Summary

Problems solved by technology

The existing light-transmitting components set the cell strings into even-numbered strings. Although the power is high, the light transmittance is poor. more difficult, such as Figure 4 As shown, it is necessary to use a longer bus bar to connect to the head, and to concentrate the cells on the upper part, which also causes the problem of uneven light transmission and low power. In addition, the front glass of the existing light transmission module adopts a crescent cut This leads to problems such as uneven visible area of ​​components, high wind loss value, large series resistance, and high investment cost.

Images