Battery piece, photovoltaic module and welding tool

Abstract

The invention discloses a battery piece, a photovoltaic module and a welding tool, the battery piece comprises a semiconductor substrate and a grid line electrode, the grid line electrode comprises a plurality of main grid lines distributed at intervals along a first direction and a plurality of fine grid lines distributed at intervals along a second direction, the grid line electrode at least comprises a first area and a second area which are distributed in the first direction, and the distance between every two adjacent main grid lines in the first area is larger than the distance between every two adjacent main grid lines in the second area. The distance between every two adjacent fine grid lines in the second area is larger than the distance between every two adjacent fine grid lines in the first area. Compared with the prior art, a tool corresponding to a large-size battery piece is used for welding in the assembly welding process, when a small-size battery piece is replaced, due to the fact that the distance between the main grid lines is not changed, the welding tool does not need to be replaced, only redundant main grid line welding positions need to be shielded, and compatibility of the welding tool is achieved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a battery sheet, a photovoltaic module and a welding tool. Background technique [0002] In recent years, with the rapid development of photovoltaic technology, the demand for high-power modules is increasing, and the corresponding cell size modules are increasing. Cells with 158, 163, 166, 182, 210 and larger sizes are in full bloom, and the corresponding large-size module projects are offline. , The finished product of photovoltaic power generation further declined. The diversification of cell size requires one-to-one correspondence with welding tooling, which increases the tooling equipment and workload in the process of replacing products of different sizes at the module end. In the design of cells of different sizes, the distance between the main grids in the graphic design of the cells is designed to be equal. The number needs to be further increased. The equidistant...

AI Technical Summary

Problems solved by technology

The equidistant graphic design of the cells requires replacement of the welding tooling settings for cells of different sizes during the component welding process, and the compatibility of the component tooling cannot be achieved.

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