Solar cell module

Abstract

The invention discloses a solar cell module. The solar cell module comprises at least one solar cell string, wherein the solar cell string comprises multiple solar cell pieces which are connected in series through conductive bands; the length L of the solar cell pieces in the series-wound direction of the conductive bands is less than or equal to 10cm; the total width W of the conductive bands adopted by each solar cell piece accounts for 0.1-3% of the width D of the corresponding solar cell piece; and the ratio of the total width W of the conductive bands to the length L of the corresponding solar cell piece is D: 8,000mm to D: 3,000mm. By adoption of the solar cell module, the contradiction of the light-shading loss and the resistance loss of the conductive band is perfectly harmonized, and the maximum power output is realized; meanwhile, the silver paste consumption amount, the usage amount of the conductive band of the module and the usage amount of conductive adhesive of the cell pieces are reduced; the production cost of the module is lowered; an unexpected technical effect is achieved.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a solar cell assembly. Background technique [0002] Conventional fossil fuels are increasingly depleted. Among all sustainable energy sources, solar energy is undoubtedly the cleanest, most common and most potential alternative energy source. Photovoltaic power generation is one of the power generation technologies with the most desirable characteristics of sustainable development. At present, among all solar cells, silicon solar cells are one of the solar cells that have been widely commercialized. This is due to the extremely abundant reserves of silicon materials in the earth's crust. Has excellent electrical and mechanical properties. In the development of photovoltaic technology in the future, with the further improvement of the photoelectric performance of silicon solar cells and the further reduction of the price of silicon materials, silicon solar cells will occupy an import...

AI Technical Summary

Problems solved by technology

In addition, with such a width of ribbon, the weight of the ribbon required on each component is relatively heavy, and the cost of the ribbon on each component is also relatively high

Thirdly, most of the light irradiated on the areas covered by the solder strips cannot be absorbed by the solar cells, thereby reducing the photoelectric conversion efficiency of the solar cell components.

However, if the width of the ribbon is reduced, the resistance power loss of the ribbon will be greatly increased due to the reduction of the cross-sectional area of ​​the ribbon, which will also reduce the photoelectric conversion efficiency of the solar cell module.