PHOTOVOLTAIC MODULE
The invention relates to a photovoltaic module. Such a photovoltaic module is also referred to as a “string” and consists of a plurality of plate-shaped cells, what are known as solar cells, which are arranged at a distance from each other and flush with each other.
1 . Photovoltaic module with the following features:
a plurality of plate-shaped cells ( 10 , 12 , 14 , 16 , 18 ) which are arranged at a distance from each other and flush with each other
each cell ( 10 , 12 , 14 , 16 , 18 ) has a conductor track structure ( 22 , 24 ) which forms a first electrode on a first main surface, and a second main surface is configured in each case as a second electrode with opposed polarity,
all cells ( 10 , 12 , 14 , 16 , 18 ) are oriented identically with respect to their main surfaces,
adjacent cells ( 10 , 12 ; 12 , 14 ; 14 , 16 ; 16 , 18 ; 18 , 20 ) are electrically connected in each case by means of at least one flat band ( 24 ),
the flat band ( 24 ) has a solderable coating ( 26 ) on a base body,
the flat band ( 24 ) is soldered with a first section to the first electrode of one cell ( 10 , 12 , 14 , 16 , 18 ) and with a second section to the second electrode of an adjacent cell ( 12 , 14 , 16 , 18 ), wherein
the coating ( 26 ) in the section between adjacent cells ( 10 , 12 ; 12 , 14 ; 14 , 16 ; 16 , 18 ; 18 , 20 ) at at least two points ( 1 , 2 ) has material thicknesses which deviate from each other by at least 30%, relative to the base body of the flat band ( 24 ).
2 . Photovoltaic module according to claim 1 , in which the coating ( 26 ) in the section between adjacent cells ( 10 , 12 ; 12 , 14 ; 14 , 16 ; 16 , 18 ; 18 , 20 ) at at least two points ( 1 , 2 ) has material thicknesses which deviate from each other by at least 40%.
3 . Photovoltaic module according to claim 1 , in which the coating ( 26 ) in the section between adjacent cells ( 10 , 12 ; 12 , 14 ; 14 , 16 ; 16 , 18 ; 18 , 20 ) at at least two points ( 1 , 2 ) has material thicknesses which deviate from each other by at least 60%.
4 . Photovoltaic module according to claim 1 , in which the coating ( 26 ) in the section between adjacent cells ( 10 , 12 ; 12 , 14 ; 14 , 16 ; 16 , 18 ; 18 , 20 ) at at least two points ( 1 , 2 ) has material thicknesses which deviate from each other by at least 80%.
5 . Method for producing a photovoltaic module according to claim 1 , with the following features:
a first cell is placed on a support,
at least one flat band is placed with one section on the exposed first electrode of the first cell,
a second cell is placed on the second section of the flat band in such a manner that it lies at a distance from the first cell and the second electrode of the second cell contacts the second section of the flat band,
the steps 5 . 2 and 5 . 3 are then repeated until the module comprises n cells,
the module with n cells is thermally loaded from at least one side in a subsequent method step in such a manner that a soldered connection is produced between the flat bands and corresponding electrodes of the cells,
the support with the module lying on it is then fed to further process steps.
6 . Method according to claim 5 , in which the cells are placed into corresponding depressions in the support.
7 . Method according to claim 5 , in which the cells are thermally treated using halogen light.
8 . Method according to claim 5 , having a plurality of heat sources, which are arranged in front of the cells at a distance from both main surfaces of the cells.