Apparatus for forming and mounting a photovoltaic array
A photovoltaic (PV) module framing and coupling system enables the attachment of PV modules to a roof or other mounting surface without requiring the use of separate structural support members which attach directly to and span between multiple PV modules in a formed PV array. The apparatus provides a parallel coupling for securely interlocking the outside surfaces of parallel frame members together in a side to side arrangement to form an array with improved structural load distribution. The coupling may attach to a slot in the frame at substantially any position along the length of the frame thereby enabling the interconnection of adjacent PV modules along both an x and y axis. The apparatus may further provide a rotating portion and locking portion, mounting brackets for direct connection to a mounting surface, grounding teeth, and a twist-lock engagement means for interlocking and aligning PV modules in the array.
1. A photovoltaic module and coupling assembly, comprising:
(a) a photovoltaic module, comprising:
(i) a photovoltaic laminate, and
(ii) a frame around the photovoltaic laminate, wherein the frame has an outwardly facing groove therein, the outwardly facing groove having an inner slot and upper and lower flanges; and
(b) a coupling received into the outwardly facing groove in the frame, wherein the coupling is dimensioned such that rotation of the coupling to a locked position causes the coupling to simultaneously bear against top and bottom surfaces of the inner slot, and wherein the coupling is capable of sliding along the groove while within the groove when in an unlocked position.
2. The assembly of claim 1 , wherein the coupling comprises a rotating body portion with locking portions extending from opposite sides of the rotating body portion.
3. The assembly of claim 2 , wherein one of the locking portions of the coupling has a length approximately equal to the height of the slot and a width slightly less than the height of an opening into the groove.
4. The assembly of claim 1 , wherein outer surfaces of the upper and lower flanges are curved inwardly into an opening into the groove.
5. The assembly of claim 1 , wherein the coupling rotates from the unlocked position to the locked position when rotated by 90 degrees.
6. The assembly of claim 1 , wherein the coupling is locked into the groove by rotation about an axis substantially parallel to the plane of the photovoltaic laminate.
7. The assembly of claim 1 , wherein the inner slot is positioned below an edge of the photovoltaic laminate.
8. The assembly of claim 1 , further comprising:
(c) a second photovoltaic module, comprising:
(i) a photovoltaic laminate, and
(ii) a frame around the photovoltaic laminate, wherein the frame has an outwardly facing groove therein, the outwardly facing groove having an inner slot and upper and lower flanges,
and wherein rotation of the coupling to the locked position causes the coupling to simultaneously bear against the top and bottom surfaces of the inner slots in the frames around both the first and second photovoltaic modules.
9. The assembly of claim 8 , wherein the coupling comprises a rotating body portion with locking portions extending from opposite sides of the rotating body portion, and wherein one locking portion is disposed within the outwardly facing grooves of each of the first and second photovoltaic module frames.