Versatile flexible circuit interconnection for connecting two flexible solar cells
A flexible circuit that allows a standardized connection interface to connect flexible solar cell(s) for easy integration into electronics devices. This interconnection scheme does not limit the intrinsic solar cell flexibility and may conform to standard design practices in electronic device manufacturing. In an aspect, a solar module is described that includes one or more solar panels and a flexible trace or interconnect having conductive wires inside an insulation material. In another aspect, an electronic device is described that includes a circuit board, one or more solar panels and a flexible trace or interconnect having conductive wires inside an insulation material. The electronic device may be an internet-of-things (IoT) device or an unmanned aerial vehicle (UAV), for example. In yet another aspect, a lighting module is described that includes one or more lighting panels and a flexible trace or interconnect having conductive wires inside an insulation material.
1. A solar module, comprising:
a first solar panel including first contacts;
a second solar panel including second contacts; and
a flexible trace including:
an insulation material that forms multiple tabs; and
conductive wires enclosed in the insulation material and configured to electrically connect the first solar panel and the second solar panel to a device external to the solar module via termination contacts positioned at one end of the flexible trace, wherein the insulation material includes openings with electrically conductive adhesive that provide electrical conductivity between the first contacts of the first solar panel and the conductive wires and between the second contacts of the second solar panel and the conductive wires, the multiple tabs of the insulation material being positioned such that the openings of a first portion of the multiple tabs overlap the first contacts of the first solar panel and the openings of a second portion of the multiple tabs overlap the second contacts of the second solar panel, wherein the first portion of the multiple tabs and the second portion of the multiple tabs include different tabs.
2. The solar module of claim 1 , wherein the flexible trace is configured to provide electrical and mechanical connectivity between the first solar panel and the device and the second solar panel and the device.
3. The solar module of claim 1 , wherein each solar panel includes one or more solar cells.
4. The solar module of claim 1 , wherein:
the first contacts of the first solar panel include a positive contact and a negative contact, and
the second contacts of the second solar panel also include a positive contact and a negative contact.
5. The solar module of claim 1 , wherein the first solar panel and the second solar panel are of a same size and shape.
6. The solar module of claim 1 , wherein the termination contacts include a zero insertion force (ZIF) connector electrically connected to the conductive wires, the ZIF connector configured to provide electrical and mechanical connectivity between the solar module and the device.
7. The solar module of claim 1 , wherein the flexible trace includes an elongated, flexible portion from which the multiple tabs extend.
8. The solar module of claim 1 , wherein the conductive wires in the flexible trace are configured to connect the first solar panel and the second solar panel in a series configuration.
9. The solar module of claim 1 , wherein the conductive wires in the flexible trace are configured to connect the first solar panel and the second solar panel in a parallel configuration.
10. The solar module of claim 1 , wherein each of the first solar panel and the second solar panel is fabricated with thin film flexible solar cells.
11. The solar module of claim 1 , wherein each of the first solar panel and the second solar panel is fabricated with thin-film flexible solar cells made of III-V semiconductor materials.
12. The solar module of claim 1 , wherein:
the first contacts include a first positive contact and a first negative contact,
the second contacts include a second positive contact and a second negative contact, and
the multiple tabs include a first tab, a second tab, a third tab, and a fourth tab,
wherein the first tab overlaps the first negative contact on a front portion of the first solar panel and the second tab overlaps the first positive contact on a back portion of the first solar panel, and
wherein the third tab overlaps the second negative contact on a front portion of the second solar panel and the fourth tab overlaps the second positive contact on a back portion of the second solar panel.
13. An electronic device, comprising:
a circuit board;
a first solar panel including first contacts;
a second solar panel including second contacts; and
a flexible trace including:
an insulation material that forms multiple tabs; and
conductive wires enclosed in the insulation material and configured to electrically connect the first solar panel and the second solar panel to the circuit board via termination contacts positioned at one end of the flexible trace, wherein the insulation material includes openings with electrically conductive adhesive that provide electrical conductivity between the first contacts of the first solar panel and the conductive wires and between the second contacts of the second solar panel and the conductive wires, the multiple tabs of the insulation material being positioned such that the openings of a first portion of the multiple tabs overlap the first contacts of the first solar panel and the openings of a second portion of the multiple tabs overlap the second contacts of the second solar panel, wherein the first portion of the multiple tabs and the second portion of the multiple tabs include different tabs.
14. The electronic device of claim 13 , wherein the flexible trace is configured to provide electrical and mechanical connectivity between the first solar panel and the circuit board and the second solar panel and the circuit board.
15. The electronic device of claim 13 , wherein each of the first solar panel and the second solar panel includes one or more solar cells.
16. The electronic device of claim 13 , wherein the termination contacts include a zero insertion force (ZIF) connector electrically connected to the conductive wires, the ZIF connector configured to provide electrical and mechanical connectivity between the electronic device and the circuit board.
17. The electronic device of claim 13 , wherein the flexible trace includes an elongated, flexible portion from which the multiple tabs extend.
18. The electronic device of claim 13 , wherein each of the first solar panel and the second solar panels is fabricated with thin film flexible solar cells made of III-V semiconductor materials.
19. The electronic device of claim 13 , wherein the electronic device is:
an internet-of-things (IoT) device, or
an unmanned aerial vehicle (UAV).
20. A lighting module, comprising:
a first lighting panel including first contacts;
a second lighting panel including second contacts; and
a flexible trace including:
an insulation material that forms multiple tabs; and
conductive wires enclosed in the insulation material and configured to electrically connect the first lighting panel and the second lighting panel to a device external to the lighting module via termination contacts of the lighting module positioned at one end of the flexible trace, wherein the insulation material includes openings with electrically conductive adhesive that provide electrical conductivity between the first contacts of the first lighting panel and the conductive wires and between the second contacts of the second lighting panel and the conductive wires, the multiple tabs of the insulation material being positioned such that the openings of some of the tabs overlap the first contacts of the first lighting panel and the openings of the remaining tabs overlap the second contacts of the second lighting panel.