Solar cell module and solar cell slice thereof

Abstract

The invention provides a solar cell module and a solar cell slice thereof. The front side of the solar cell slice comprises a plurality of main gate lines and a plurality of fine gate lines; the main gate lines and the fine gate lines are mutually vertical; each main gate line comprises at least one main gate line unit; the main gate line units comprise first fine main gate lines and second fine main gate lines; the first fine main gate lines and the second fine main gate lines are vertical to the fine gate lines; the areas formed by the first fine main gate lines and the second fine main gate lines, along the direction vertical to the fine gate lines, divides each main gate line into three parts, i.e., a first connecting part and a second connecting part both for adhering to a conductive adhesive tape, and a blank area which is completely hollowed out; and no fine gate lines penetrate through the blank area so that the conductive adhesive tape can be divided into a plurality of segments when the conductive adhesive tape is used for connecting mutually linked strips and the solar cell slice, and the plurality of conductive adhesive tape segments are adhered to the areas, except the blank area, among the first fine main gate lines and the second fine main gate lines of the main gate lines, thus the use amount of the conductive tape in the blank area can be correspondingly saved, and the cost of the conductive adhesive tape of the solar cell slice can be reduced.

Description

technical field [0001] The invention relates to the field of photovoltaics, and more specifically relates to a solar battery module and a solar battery sheet thereof. Background technique [0002] The solar cell module includes a tempered glass plate, an encapsulation adhesive layer, a solar cell sheet layer, an encapsulation adhesive layer and a back sheet stacked in sequence. Wherein the solar cell sheet layer includes multiple sets of solar cell strings. The solar cell string is formed by connecting the front busbars of the solar cells with the back electrodes of the adjacent solar cells by interconnecting strips. Specifically, the length of the interconnection strip is about twice the length of the solar cell, and a part of the interconnection strip is welded to the front busbar of the solar cell to cover the front busbar, thereby leading out the electrodes; The extra interconnection strips are welded to the back electrode of another solar cell, and the positive and ne...

AI Technical Summary

Problems solved by technology

[0005] However, in the process of connecting the solar cells with the conductive tape to form the solar cell module, the length of the conductive tape required for the electrical connection of two solar cells with a specification of 156mm*156mm is about 0.9 meters, and the total length required for the entire solar cell module About 54 meters, that is, the use of conductive tape is very large

[0006] The inventor found that the large amount of conductive tape used is due to the fact that the existing solar cells can only completely cover the busbars of the solar cells with conductive tape, and cannot be used in sections

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