Shingled solar cell module
A high efficiency configuration for a solar cell module comprises solar cells conductively bonded to each other in a shingled manner to form super cells, which may be arranged to efficiently use the area of the solar module, reduce series resistance, and increase module efficiency.
1 . A solar module having a front side and a back side comprising:
a plurality of super cells arranged in two or more physically parallel rows, the plurality of super cells electrically connected to each other in parallel, each super cell comprising a plurality of rectangular crystalline-silicon solar cells arranged with long sides of adjacent solar cells overlapping and conductively bonded directly to each other to electrically connect the solar cells in series;
a first interconnect located on the back side of the solar module, the first interconnect extending along a first line perpendicular to the two or more super cells, the first interconnect electrically connecting rear surfaces of two or more solar cells located in line with the first line;
a second interconnect located on the back side of the solar module, the second interconnect extending along a second line perpendicular to the two or more super cells, the second interconnect electrically connecting rear surfaces of two or more solar cells located in line with the second line;
a first conductor located on the back side of the solar module, the first conductor electrically connecting the first interconnect to a bypass diode; and
a second conductor separate from the first conductor located on the back side of the solar module, the second conductor electrically connecting the second interconnect to the bypass diode, the second conductor crossing the first line.
2 . The solar module of claim 1 , comprising a junction box, wherein the bypass diode is in the junction box.
3 . The solar module of claim 2 , wherein the junction box is located on the back side of the solar module.
4 . The solar module of claim 1 , comprising two super cell terminal interconnects, each super cell terminal interconnect located at a short end of the solar module, each upper cell terminal interconnect connecting two or more of the plurality of super cells electrically in parallel.
5 . The solar module of claim 4 , comprising a third conductor separate from the first and second conductors, the third conductor located on the back side of the solar module, the third conductor connecting one of the super cell terminal interconnects to a second bypass diode.
6 . The solar module of claim 5 , wherein the first conductor is electrically connected to the second bypass diode.
7 . The solar module of claim 6 , comprising a fourth conductor separate from the first, second, and third conductors, the fourth conductor located on the back side of the solar module, the fourth conductor connecting another of the super cell terminal interconnects to a third bypass diode.
8 . The solar module of claim 7 , wherein the second conductor is electrically connected to the third bypass diode.
9 . The solar module of claim 7 , wherein the fourth conductor crosses the first and second lines.
10 . The solar module of claim 6 , comprising a junction box located on the back side of the solar module, wherein the second bypass diode is in the junction box.
11 . The solar module of claim 9 , comprising a junction box located on the back side of the solar module, wherein the third bypass diode is in the junction box.
12 . The solar module of claim 1 , comprising 6 super cells.
13 . The solar module of claim 12 , wherein the first interconnect runs along the entire width of the solar module.
14 . A rectangular solar module having a front side, a back side, a length, and a width comprising:
a plurality of super cells arranged in two or more physically parallel rows, the plurality of super cells electrically connected to each other in parallel, each super cell comprising a plurality of rectangular crystalline-silicon solar cells arranged in a shingled manner with long sides of adjacent solar cells overlapping and conductively bonded directly to each other to electrically connect the solar cells in series;
a first interconnect located on the back side of the solar module, the first interconnect extending along a first line perpendicular to the two or more super cells and parallel to the width of the solar module, the first interconnect running along the entire width of the solar module, the first interconnect electrically connecting rear surfaces of two or more solar cells located in line with the first line;
a second interconnect located on the back side of the solar module, the second interconnect extending along a second line perpendicular to the two or more super cells, the second interconnect electrically connecting rear surfaces of two or more solar cells located in line with the second line;
a first conductor located on the back side of the solar module, the first conductor electrically connecting the first interconnect to a bypass diode; and
a second conductor separate from the first conductor located on the back side of the solar module, the second conductor electrically connecting the second interconnect to the bypass diode, the second conductor crossing the first line.
15 . The solar module of claim 14 , comprising two super cell terminal interconnects, each super cell terminal interconnect located at a short end of the solar module, each upper cell terminal interconnect connecting two or more of the plurality of super cells electrically in parallel.
16 . The solar module of claim 15 , comprising a third conductor separate from the first and second conductors, the third conductor located on the back side of the solar module, the third conductor connecting one of the super cell terminal interconnects to a second bypass diode.
17 . The solar module of claim 16 , wherein the first conductor is electrically connected to the second bypass diode.
18 . The solar module of claim 17 , comprising a fourth conductor separate from the first, second, and third conductors, the fourth conductor located on the back side of the solar module, the fourth conductor connecting another of the super cell terminal interconnects to a third bypass diode.
19 . The solar module of claim 18 , wherein the second conductor is electrically connected to the third bypass diode.
20 . The solar module of claim 19 , comprising a junction box located on the back side of the solar module, wherein the bypass diode, the second bypass diode, and the third bypass diode are in the junction box.