Pivot-fit connection apparatus, system, and method for photovoltaic modules
A system and method are disclosed for quickly and easily assembling PV modules into a PV array in a sturdy and durable manner. In examples of the present technology, the system includes various couplings having a first engaging portion adapted to engage a first PV module and a second engaging portion adapted to engage a second PV module. At least one of the engaging portions allows variable positioning of the engaged PV module along the engaging portion.
1. An array of photovoltaic modules interlocked together, comprising:
(a) a first photovoltaic module;
(b) a second photovoltaic module;
(c) an interlock assembly comprising:
(i) an interlock plate;
(ii) an opening passing through the interlock plate; and
(iii) a rotatable coupling passing through the opening in the interlock plate, wherein the rotatable coupling comprises:
(A) a key portion dimensioned to rotatably lock into a groove in the first photovoltaic module, and
(B) a tongue portion dimensioned to be slidably inserted into a groove in the second photovoltaic module in a direction orthogonal to the length of the groove after the key portion has been rotated into a locked position, and wherein the grooves in each of the first and second modules are dimensioned such that:
(1) an innermost edge of the top of an opening into the groove is lower than an outermost edge of the top of the opening into the groove, and
(2) an innermost edge of the bottom of an opening into the groove is lower than an outermost edge of the bottom of the opening into the groove.
2. The array of claim 1 , wherein the tongue portion permits movement of the second photovoltaic module in the direction orthogonal to the length of the groove after the key portion has been rotated into the locked position.
3. The array of claim 2 , wherein the tongue portion has a flat surface on which the second photovoltaic module is permitted to slide in a direction orthogonal to the second photovoltaic module when the key portion has been engaged with the first photovoltaic module.
4. An interlock assembly for connecting photovoltaic module frames together, comprising:
(a) an interlock plate;
(b) an opening passing through the interlock plate; and
(c) at least one rotatable coupling passing through the opening in the interlock plate, wherein the rotatable coupling comprises:
(i) a key portion dimensioned to rotatably lock into a groove in a first photovoltaic module frame, and
(ii) a tongue portion dimensioned to be slidably inserted into a groove in a second photovoltaic module frame in a direction orthogonal to the length of the groove after the key portion has been rotated into a locked position, and wherein the grooves in each of the first and second module frames are dimensioned such that:
(1) an innermost edge of the top of an opening into the groove is lower than an outermost edge of the top of the opening into the groove, and
(2) an innermost edge of the bottom of an opening into the groove is lower than an outermost edge of the bottom of the opening into the groove.
5. The interlock assembly of claim 4 , wherein the tongue portion permits movement of the second photovoltaic module frame in the direction orthogonal to the length of the groove after the key portion has been rotated into the locked position.
6. The interlock assembly of claim 4 , wherein the tongue portion of the rotatable coupling is dimensioned to be slidably received into an angled groove in the second photovoltaic module frame and then pivoted about an axis extending parallel to the length of the groove into a locked position, thereby locking the tongue portion into the angled groove in the second photovoltaic module frame.
7. The interlock assembly of claim 6 , wherein the tongue portion is dimensioned to push against upper and lower bearing surfaces in the angled groove when the tongue is in the locked position.
8. The interlock assembly of claim 4 , further comprising:
(d) a bottom support lip extending along the bottom of the interlock plate, wherein the bottom support lip is dimensioned to be positioned under two photovoltaic module frames when the two photovoltaic module frames are connected together in series.
9. The interlock assembly of claim 4 , further comprising:
(d) at least one support rib extending from a side of the interlock plate, wherein the support rib is dimensioned to be received into grooves of two photovoltaic module frames when the two photovoltaic module frames are connected together in series.
10. The interlock assembly of claim 4 , wherein the coupling enables a grounding bond between said first and second photovoltaic modules.