Intelligent dual-glass solar module

Abstract

The invention discloses an intelligent dual-glass solar module. The intelligent dual-glass solar module comprises a first glass layer, a first EVA layer, a solar battery layer, a second EVA layer, a second glass layer, a cable and a connector, wherein a groove is formed in the surface of the second glass layer; a circuit board is placed in the groove; a plurality of bypass diodes and a plurality of power optimizing modules are integrated on the circuit board; the solar battery layer comprises a plurality of solar battery strings; one end of each solar battery string is connected with a bus bar while the other end is connected with the circuit board; the bypass diodes and the corresponding solar battery strings are in anti-parallel connection; and the power optimizing modules are connected with the corresponding solar battery strings for tracking the maximum power point of each solar battery string. By embedding the circuit board, which is integrated with the bypass diodes and the power optimizing modules, in the model, and by tracking the maximum power point of each solar battery string, the power output maximum of the module is realized, and the module has higher reliability.

Description

technical field [0001] The invention relates to the field of solar materials and devices, in particular to an intelligent double-glass solar module. Background technique [0002] As a clean and renewable new energy, solar energy has received more and more attention, and its application is becoming more and more extensive. At present, one of the most important applications of solar energy is photovoltaic power generation. The most basic unit of solar photovoltaic power generation is a solar cell. In a specific application, a plurality of solar cells are usually formed into a solar cell module, and then each solar cell module is connected to form an overall current output. The currently widely used solar cell modules are basically composed of ultra-white low-iron tempered glass, two layers of EVA layers (ethylene-vinyl acetate copolymer), solar cells arranged in two layers of EVA layers, and a back sheet. It is heated and laminated under vacuum to become a whole, and then the...

AI Technical Summary

Problems solved by technology

First of all, since the back of the module is made of a polymer backsheet material, water vapor can easily hydrolyze the EVA inside the module through the backsheet, resulting in electrochemical corrosion inside the module, increasing the probability of PID attenuation and snailing; in addition Affected by the material of the backplane, it is difficult for components to withstand higher system voltages, and the number of components connected in series is often limited

Secondly, although the bypass diodes inside the junction box of conventional components have a certain protective function for solar cells, due to the limited number of configured diodes, this protective function is relatively limited, and many components are still damaged by hot spots in practical applications. In addition, the heat dissipation capacity of the conventional junction box is poor, so that the diode in the junction box has a high junction temperature, which is likely to cause the failure of the diode for a long time; at the same time, the solar cells on the back of the junction box will also be affected. The inconsistency in the temperature of the cells leads to a mismatch between them, reducing the output power of the module

Furthermore, modules are often affected by shading factors such as chimneys, tree shade, dust, bird droppings, etc. during outdoor use, which greatly reduces the output power and power generation efficiency, or when there is a large mismatch of solar cells inside the module , will also cause a large mismatch loss and reduce the output power of the module

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