Flexible photovoltaic array with integrated wiring and control circuitry, and associated methods
View Patent ↗A flexible photovoltaic module for converting light into electricity includes a plurality of photovoltaic cells, a wiring harness, and a connection subsystem. The plurality of photovoltaic cells are electrically interconnected to form a positive node for supplying current to a load and a negative node for receiving current from the load. The wiring harness includes a plurality of flexible electrical conductors, each electrical conductor being electrically isolated within the wiring harness. The connection subsystem is operable to selectively connect the positive node to one of the electrical conductors of the wiring harness. A plurality of flexible photovoltaic modules may be connected to form a photovoltaic array.
1. A flexible photovoltaic module for converting light into electricity, comprising:
a plurality of photovoltaic cells electrically interconnected to form a high-voltage power output including a positive node for supplying current to a load and a negative node for receiving current from the load;
a first wiring harness including (a) a plurality of flexible high-voltage electrical conductors and (b) a low-voltage electrical conductor, each of the plurality of flexible high-voltage electrical conductors being electrically isolated within the first wiring harness from each other of the plurality of flexible high-voltage electrical conductors, the low-voltage electrical conductor being electrically isolated within the first wiring harness from each of the plurality of flexible high voltage electrical conductors;
a connection subsystem for selectively connecting the positive node to one of the plurality of flexible high-voltage electrical conductors of the first wiring harness; and
a low-voltage tap connected to the low-voltage electrical conductor of the first wiring harness and configured to provide a low-voltage power output from the photovoltaic module, the low-voltage power output being separate from the high-voltage power output, a voltage of the low-voltage power output being less than an entire voltage across the positive and negative nodes, the low-voltage tap connected to a first intermediate node of the plurality of photovoltaic cells, the first intermediate node being different from the positive and negative nodes.
2. The photovoltaic module of claim 1 , the connection subsystem comprising a control box including at least one electrical connector for selectively connecting the positive node to one of the plurality of flexible high-voltage electrical conductors of the first wiring harness.
3. The photovoltaic module of claim 2 , the at least one electrical connector for selectively connecting the positive node to one of the plurality of flexible high-voltage electrical conductors of the first wiring harness being a switch.
4. The photovoltaic module of claim 2 , the control box further comprising a current limiting device for limiting the flow of electric current through the plurality of photovoltaic cells.
5. The photovoltaic module of claim 2 , the control box further comprising a disconnect switch in electrical communication with the positive node for electrically disconnecting the photovoltaic cells from at least one of the plurality of flexible high-voltage electrical conductors of the first wiring harness.
6. The photovoltaic module of claim 2 , the control box further comprising an inverter for converting direct current electricity produced by the photovoltaic module into alternating current electricity.
7. The photovoltaic module of claim 2 , the control box further comprising a monitoring device for monitoring the performance of the photovoltaic module.
8. The photovoltaic module of claim of 7 , the monitoring device being operable to generate performance data of the photovoltaic module and transfer the performance data to a remote location.
9. The photovoltaic module of claim 1 , further comprising a ground wiring harness including a ground wiring conductor, the ground wiring conductor being electrically connected to the negative node.
10. The photovoltaic module of claim 9 , the first wiring harness and the ground wiring harness being part of a common wiring harness.
11. The photovoltaic module of claim 1 , the plurality of photovoltaic cells being monolithically integrated on a common substrate, the common substrate comprising connection flaps for fastening the photovoltaic module to one or more supporting structures.
12. The photovoltaic module of claim 1 , the low-voltage tap being electrically connected to the positive node and to the first intermediate node of the plurality of photovoltaic cells.
13. The photovoltaic module of claim 1 , the low-voltage tap being electrically connected to the negative node and to the first intermediate node of the plurality of photovoltaic cells.
14. The photovoltaic module of claim 1 , the low-voltage tap being electrically connected to the first intermediate node of the plurality of photovoltaic cells and to a second intermediate node of the plurality of photovoltaic cells, the second intermediate node being different from the first intermediate node.
15. The photovoltaic module of claim 1 , the low-voltage tap comprising a DC-to-DC converter.
16. The photovoltaic module of claim 1 , the intermediate node being a node electrically connecting two of the plurality of photovoltaic cells in series.
17. The photovoltaic module of claim 1 , the plurality of photovoltaic cells being disposed on a common backplane.
18. The photovoltaic module of claim 17 , the plurality of photovoltaic cells being laminated to the common backplane.