A kind of photovoltaic cell module and its production method

Abstract

A photovoltaic cell component and a production method thereof belong to the field of crystalline silicon solar cells, and in particular relate to a novel photovoltaic cell and component electrical connection method. The invention provides a photovoltaic battery module with low cost, low debris rate in the production process, improved power generation efficiency and product quality and a production method thereof. The photovoltaic cell assembly of the present invention includes a battery sheet, and is characterized in that: the battery sheet is only provided with auxiliary grid lines, and no main grid lines are provided; the battery sheet is provided with filamentary conductive materials perpendicular to the auxiliary grid lines.

Description

technical field [0001] The invention belongs to the field of crystalline silicon solar cells, in particular to a novel photovoltaic cell and component electrical connection method Background technique [0002] In the manufacture of existing photovoltaic cell modules, if multi-chip crystalline silicon solar cells are packaged into modules of a certain specification, the traditional process method is to pull out the copper soldering strips coated with tin-lead alloys through a stringer, and weld them on the The positive and negative main grid lines of adjacent battery slices are used to realize the series connection between multiple battery slices. The automatic stringing operation has the advantages of being simple, fast and efficient. At the same time, it also has the following disadvantages: 1. When the ribbon is welded to the cell, due to the high temperature of the welding, it is very easy to cause deformation or even fragmentation of the crystalline silicon cell. , The ...

AI Technical Summary

Problems solved by technology

The automatic stringing operation has the advantages of being simple, fast and efficient. At the same time, it also has the following disadvantages: 1. When the ribbon is welded to the cell, due to the high temperature of the welding, it is very easy to cause deformation or even fragmentation of the crystalline silicon cell. , the traditional welding process is easy to cause thermal stress damage to the battery sheet, and it is prone to poor electrical connections such as missing soldering and virtual soldering, resulting in quality hazards

[0003] 2. Affected by the impact force of the pressing pin and other devices in the welding equipment, small thin cells and large cells are very likely to cause quality defects such as fragments and hidden cracks

[0004] 3. Since the solder ribbon itself has the problem of shading the cells, the power of the packaged components will be lost to a certain extent.

The tin-coated layer of existing solder strips is generally tin-lead alloy, and the harmful gas released during welding will cause certain pollution to the environment

Images