Spliced photovoltaic module

Abstract

The invention discloses a spliced photovoltaic module. The photovoltaic module comprises a welding strip and a battery piece, wherein the welding strip is divided into a middle section, head sectionsat two ends and a transition section located between the middle section and the head sections, thickness D1 of the head sections is greater than thickness D2 of the middle section, thickness of the transition section gradually changes from D1 to D2, the welding strip is bent in a Z shape, a vertical section of the welding strip is located between cut edges of every two adjacent battery pieces andattached to the cut edges, the vertical section is a part of the middle section, a surface of one side of the head sections is attached to the surfaces of the battery pieces, and the portion, attachedto the cut edges, of the vertical section is provided with an insulating coating. The photovoltaic module is advantaged in that the structure of the welding strip is optimized, the welding strip andthe battery pieces are connected and optimized through the insulating coating, soft contact between the welding strip and the battery pieces, welding between the welding strip and the battery pieces,complete coating in the laminating process, insulation between the welding strip and the battery pieces, no short circuit and good bonding performance between the insulation coating and the copper welding strip are achieved, and thereby a piece gap between the battery pieces is infinitely close to zero, and higher CTM is achieved.

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.

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