Photovoltaic panel having a distributed support frame
A photovoltaic panel having a photovoltaic module supported by a distributed support frame is described. The distributed support frame may include a support member extending over a back surface of the photovoltaic module. For example, one or more support members may extend laterally from a support hub mounted on the back surface. The distributed support frame may reduce a span length of the photovoltaic module between support locations, and thus, may reduce a likelihood that a module laminate will crack under a design load.
1. A photovoltaic panel, comprising:
a photovoltaic module having a photovoltaic cell between a front layer and a back layer, wherein the back layer includes a back surface sheet defining an outer photovoltaic module perimeter; and
a distributed support frame including
a plurality of support hubs mounted on the back surface sheet of the photovoltaic module, wherein at least two support hubs of the plurality include a plurality of support members extending outwardly from its respective support hub and towards the outer photovoltaic module perimeter, wherein at least two support members for each respective support hub are not parallel to each other.
2. The photovoltaic panel of claim 1 , wherein each support hub of the plurality of support hubs includes an upper end mounted on the back surface sheet and located inside of the photovoltaic module perimeter, and a hub connector at a lower end, and further comprising a support stand having a stand connector coupled to at least one hub connector of the distributed support frame between the upper end of the support hub and a base of the support stand.
3. The photovoltaic panel of claim 1 , wherein the distributed support frame forms the shape of diamonds and triangles defined by support members and support hubs.
4. The photovoltaic panel of claim 3 , wherein each support hub is in the shape of a truncated cone.
5. The photovoltaic panel of claim 3 , wherein each support member includes a support surface facing the back surface sheet, and wherein the support surface contacts the back surface sheet when a design load presses on the front layer.
6. The photovoltaic panel of claim 5 , wherein each support surface is separated from the back surface sheet by a no-load gap, and wherein the no-load gap is less than a maximum deflection of the photovoltaic module when the design load presses on the front layer.
7. The photovoltaic panel of claim 3 , wherein each of the support members include a member height tapering from the respective support hub to a respective member tip, and further comprising a support coupling coupled to the member tips of the support members.
8. The photovoltaic panel of claim 1 , wherein the front layer and the back layer have different elastic moduli.
9. The photovoltaic panel of claim 8 , wherein the front layer includes a glass sheet, and wherein the back layer includes a polymer sheet.
10. The photovoltaic panel of claim 1 , wherein the plurality of support members is symmetrically arranged about a vertical axis extending through a center support hub, the vertical axis orthogonal to the back surface sheet.
11. A photovoltaic panel, comprising:
a photovoltaic module having a photovoltaic cell between an upper layer and a back layer, wherein the back layer includes a back surface, wherein the upper layer extends to and defines a first outer photovoltaic module perimeter; and
a distributed support frame including
a plurality of support hubs, at least two hubs of the plurality having a first end mounted on the back surface and within the first outer photovoltaic module perimeter, wherein at least two hubs of the plurality include a hub connector at a second end, and
a plurality of support member extending outwardly from each support hub, each support member of the plurality of support members positioned within the first outer photovoltaic module perimeter.
12. The photovoltaic panel of claim 11 further comprising a support stand having a stand connector coupled to at least one hub connector.
13. The photovoltaic panel of claim 11 , wherein the upper layer and the back layer have different elastic moduli.
14. The photovoltaic panel of claim 13 , wherein the upper layer includes a glass sheet, and wherein the back layer includes a polymer sheet.
15. The photovoltaic panel of claim 11 , wherein the plurality hubs include a central support hub and satellite support hubs, the central support hub located in the center of the back layer and the satellite support hubs radially located outwardly from the central support hub.
16. The photovoltaic panel of claim 1 wherein support members extends radially outwardly from their respective support hub and towards the perimeter and wherein the back layer includes a single continuous back surface defining the perimeter.
17. The photovoltaic panel of claim 1 wherein the plurality of support hubs includes a central support hub and satellite support hubs, the satellite support hubs positioned closer to the perimeter than the central support hub.
18. The photovoltaic panel of claim 17
wherein at least one support member for each support hub of the plurality has a first end and a second end and has a taper located along the length of support member between the first end and the second end and tapering from the first end to the second end,
wherein the central support hub is connected to the second end of a support member of the plurality of support members, and
wherein each satellite support hub is connected to a first end of a support member of the plurality of support members.
19. A system of photovoltaic panels comprising:
a first photovoltaic panel comprising a first outer perimeter, a plurality of support hubs located within the first outer panel perimeter, at least two of the support hubs located within the first outer perimeter coupled to a plurality of support frames that extend outwardly from each of the at least two support hubs, the first outer panel perimeter bordering a single glass sheet of the first photovoltaic panel;
a second photovoltaic panel comprising a second outer panel perimeter, a plurality of support hubs located within the second outer perimeter, at least two of the support hubs located within the second outer perimeter coupled to a plurality of support frames that extend outwardly from each of the at least two support hubs, the second panel perimeter bordering a single glass sheet of the second photovoltaic panel;
a first stand connector positioned within the first outer panel perimeter and coupled to a base; and
a second stand connector positioned within the second outer panel perimeter and coupled to the base.
20. The system of photovoltaic panels of claim 19
wherein the plurality of support hubs of the first photovoltaic panel comprises a central support hub and at least one satellite support hub, the central support hub and the satellite support hub each located within the first outer panel perimeter, and
wherein, the plurality of support hubs of the second photovoltaic panel comprises a central support hub and at least one satellite support hub, the central support hub and the satellite support hub each located within the second outer panel perimeter.