Photovoltaic module mounting assembly having a pin constraint
A mounting assembly for a photovoltaic (PV) module, and systems including such mounting assemblies, are described. In an example, the mounting assembly includes a top support and a bottom support having respective mounting walls, and holes through the mounting walls. A pin assembly may extend through the holes in the mounting walls to constrain the supports, for example, relative to a torque member of a solar-tracking PV system. The pin assembly may include end collars to engage and distribute loading from the torque member.
1. A mounting assembly, comprising:
a top support member having a top mounting wall and a top support member hole extending through the top mounting wall;
a bottom support member including a bottom mounting wall having a concave upward surface facing the top mounting wall of the top support member, and a bottom support member hole extending through the bottom mounting wall, wherein the bottom support member hole is centered within the concave upward surface of the bottom mounting wall of the bottom support member;
a pin assembly including a pin extending along a pin axis through the top support member hole and the bottom support member hole; and
a PV module coupled to the top support member.
2. The mounting assembly of claim 1 , wherein the top mounting wall includes a concave downward surface facing the bottom mounting wall.
3. The mounting assembly of claim 2 further comprising:
one or more top struts extending orthogonal to the pin axis and outward from the top mounting wall; and
a plurality of bottom struts, wherein each bottom strut is coupled to the top strut at a second end.
4. The mounting assembly of claim 1 , wherein the pin assembly includes one or more end collars, each end collar disposed in the top support member hole or the bottom support member hole, and wherein the end collars include a collar diameter greater than a pin diameter of the pin.
5. The mounting assembly of claim 4 , wherein the collar diameters are at least twice the pin diameter.
6. The mounting assembly of claim 5 , wherein each end collar includes a collar flange having a flange diameter greater than the collar diameter, and wherein each end collar extends through the top mounting wall or the bottom mounting wall from the collar flange outside of the support members to a collar end between the support members.
7. The mounting assembly of claim 6 , wherein each collar includes a collar height between the collar flange and the collar end, and wherein the collar height is at least twice a thickness of the top mounting wall or the bottom mounting wall.
8. A photovoltaic (PV) module assembly, comprising:
a mounting assembly including
a top support member having a top mounting wall and a top support member hole extending through the top mounting wall,
a bottom support member including a bottom mounting wall having a concave upward surface facing the top mounting wall of the top support member, and a bottom support member hole extending through the bottom mounting wall, wherein the bottom support member hole is centered within the concave upward surface of the bottom mounting wall of the bottom support member, and
a pin assembly including a pin extending along a pin axis through the top support member hole and the bottom support member hole; and
a PV module having a PV laminate mounted on a PV frame, wherein the PV frame is mounted on the top support member.
9. The PV module assembly of claim 8 , wherein the top mounting wall includes a concave downward surface facing the bottom mounting wall.
10. The PV module assembly of claim 9 , wherein the top support member includes one or more top struts extending orthogonal to the pin axis and outward from the top mounting wall, wherein the PV frame is mounted on the one or more top struts, and wherein the bottom support member includes a plurality of bottom struts, and wherein each bottom strut is coupled to the one or more top struts at a first end.
11. The PV module assembly of claim 8 , wherein the pin assembly includes one or more end collars, wherein each end collar is disposed in the top support member hole or the bottom support member hole, and wherein the end collars include a collar diameter greater than a pin diameter of the pin.
12. The PV module assembly of claim 11 , wherein the collar diameters are at least twice the pin diameter.
13. The PV module assembly of claim 12 , wherein each end collar includes a collar flange having a flange diameter greater than the collar diameter, and wherein each pin collar extends from the collar flange outside of the support members to a collar end between the support members through the top mounting wall or the bottom mounting wall.
14. The PV module assembly of claim 13 , wherein each collar includes a collar height between the collar flange and the collar end, and wherein the collar height is at least twice a thickness of the top mounting wall or the bottom mounting wall.
15. A solar-tracking photovoltaic (PV) system, comprising:
a torque member extending along a longitudinal axis and pivotable about the longitudinal axis, wherein the torque member includes a member wall having a pair of diametrically opposed mounting holes;
a mounting assembly mounted on the torque member and including
a top support member including a top mounting wall having a top support member hole aligned with the pair of mounting holes,
a bottom support member including a bottom mounting wall having a concave upward surface facing the top mounting wall of the top support member, and a bottom support member hole aligned with the pair of mounting holes, wherein the bottom support member hole is centered within the concave upward surface of the bottom mounting wall of the bottom support member, and
a pin assembly including a pin extending along a pin axis through the top support member hole, the pair of mounting holes, and the bottom support member hole; and
a PV module having a PV laminate mounted on a PV frame, wherein the PV frame is mounted on the mounting assembly.
16. The solar-tracking PV system of claim 15 , wherein the top mounting wall includes a concave downward surface, and wherein the concave surfaces conform to the member wall.
17. The solar-tracking PV system of claim 16 , wherein the top support member includes one or more top struts extending orthogonal to the pin axis and outward from the top mounting wall, wherein the PV frame is mounted on the one or more top struts, and wherein the bottom support member includes a plurality of bottom struts coupled to the top strut at a first end.
18. The solar-tracking PV system of claim 15 , wherein the pin assembly includes one or more end collars, wherein each end collar is disposed in the top support member hole or the bottom support member hole, and wherein the end collars include a collar diameter greater than a pin diameter of the pin.
19. The solar-tracking PV system of claim 18 , wherein the collar diameters are at least twice the pin diameter.
20. The solar-tracking PV system of claim 19 , wherein each end collar includes a collar flange having a flange diameter greater than the collar diameter, and wherein each end collar extends from the collar flange outside of the support members to a collar end within an inner diameter of the member wall.