A patchwork photovoltaic module

Abstract

The invention discloses a patchwork photovoltaic module, which includes a welding strip and a battery sheet. The welding strip is divided into a middle section, a head section at both ends, and a transition section between the middle section and the head section. The thickness of the head section is D 1 >The thickness D of the middle section 2 , the thickness of the transition section from D 1 to D 2 Gradient change, the ribbon is bent in a Z shape, and its vertical section is between the cutting edges of two adjacent cells and fits with the cutting edges. The vertical section is a part of the middle section, and the side surface of the head is in contact with the battery sheet The surface fits the vertical section with an insulating coating where it fits the cut edge. The present invention optimizes the structure of the welding strip and optimizes the connection between the welding strip and the battery sheet through an insulating coating, so that the soft contact between the welding strip and the battery sheet is realized, and the coating is complete during the welding and lamination process of the welding strip and the battery sheet. The ribbon is insulated from the battery sheet without short circuit, and the insulating coating has good bonding performance with the brazing ribbon, so that the gap between the battery sheets is infinitely close to 0 and has a higher CTM.

Description

technical field [0001] The invention relates to a photovoltaic module, in particular to a patchwork photovoltaic module. Background technique [0002] At present, the high cost of electricity is still the main factor restricting photovoltaics from occupying the mainstream energy market. Only by reducing costs and increasing efficiency can we break through the existing bottleneck. At present, the efficiency improvement methods for mass production include half-cell, double-sided, multi-busbar and shingled technologies, which lead to a substantial increase in the single power of photovoltaic modules. The reported single power of modules has exceeded 450W. [0003] However, the single power of half-cut photovoltaic modules is limited, which can be increased by about 5W. The superimposed multi-busbar technology can further increase to 10W, and the shingled tile can be further increased to 30W. However, the half-cut and multi-busbar technologies have limited room for improvement. ...

AI Technical Summary

Problems solved by technology

[0007] However, in the existing technology, the battery is stacked alternately through conductive adhesive. On the one hand, the conductive adhesive system still lacks sufficient outdoor verification, and at the same time, the efficiency of the module is further reduced due to the non-reflective design of the battery.

Images