Manufacturing method of photovoltaic module

Abstract

The embodiment of the invention provides a manufacturing method for a photovoltaic module, and the method comprises the steps: obtaining a conductive part which comprises a first conductive segment which is electrically connected with the front surface of a first solar cell, and a second conductive segment which is electrically connected with the back surface of a second solar cell; arranging a buffer material at the edge of the front surface of the first solar cell and / or the edge of the back surface of the second solar cell, wherein the buffer material is contacted with the middle conductivesection of the conductive piece; stacking the edge of the back surface of the second solar cell to the edge of the front surface of the first solar cell to form an overlapping region, wherein at least part of the buffer material is located in the overlapping region between the first solar cell and the second solar cell. According to the photovoltaic module manufactured through the manufacturing method, the stress of the edge positions of the adjacent solar cells is reduced through the buffer materials, and the subfissure phenomenon is improved; and the photovoltaic module is well matched withthe existing process and is easy to popularize and implement in the industry.

Description

technical field [0001] The present application relates to the technical field of photovoltaic module manufacturing, in particular to a method for manufacturing a photovoltaic module. Background technique [0002] The battery strings of traditional photovoltaic modules are electrically connected to adjacent battery sheets through solder ribbons, which connect the bus electrode on the front of one battery sheet to the bus electrode on the back of another adjacent battery sheet. The area between adjacent battery sheets in the above-mentioned photovoltaic module is not fully utilized, which will increase the material and manufacturing costs of the photovoltaic module. The shingled module launched in the industry cancels the spacing between adjacent cells, and realizes the electrical connection of adjacent cells through conductive adhesives, without the need for welding ribbons. However, it also faces problems such as high cost of conductive adhesive materials and difficult rewor...

AI Technical Summary

Problems solved by technology

The area between adjacent cells in the above-mentioned photovoltaic modules has not been fully utilized, which will also increase the material and manufacturing costs of photovoltaic modules

The shingled module launched in the industry cancels the spacing between adjacent cells, and realizes the electrical connection of adjacent cells through conductive adhesives, without the need for welding ribbons. However, it also faces problems such as high cost of conductive adhesive materials and difficult rework.

In view of this, in recent years, the industry has tried to overlap the edges of adjacent cells and at the same time use welding ribbons to realize the electrical connection of adjacent cells. Contact, high stress, prone to abnormal cracks

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