Solar cell receiver having an insulated bypass diode
View Patent ↗A solar cell receiver comprising a solar cell having one or more III-V compound semiconductor layers, a diode coupled in parallel with the solar cell and operable to be forward-biased in instances when the solar cell is not generating above a threshold voltage, a coating substantially encapsulating the diode, an undercoating that substantially eliminates any air gap between the anode and cathode of the diode, and a connector adapted to couple to other solar cell receivers.
1. A solar cell receiver comprising:
a board having a first side and an opposing second side;
a solar cell mounted on the board, the solar cell comprising one or more III-V compound semiconductor layers, a first contact coupled to a p-polarity side of the cell and a second contact coupled to an n-polarity side of the cell;
a diode mounted on one of the sides of the board, the diode comprising a body, an anode contact and a cathode contact, wherein the diode body comprises a top portion and a bottom portion, the bottom portion being disposed closer to the board than the top portion;
a coating disposed over the top portion of the diode body and extending to the side of the board to which the diode is mounted, the coating substantially encapsulating the diode body, anode contact and cathode contact;
an undercoating occupying substantially all of the space between the bottom portion of the diode body and the side of the board to which the diode is mounted;
a first conductive trace disposed on the first side of the board coupling the anode contact of the diode to the first contact;
a second conductive trace coupling the cathode contact of the diode to the second contact, the second conductive trace disposed on the opposing second side of the board from the first conductive trace;
a connector, mounted to the board, comprising first and second sockets electrically insulated from one another;
a third conductive trace coupling the anode contact to the first socket; and
a fourth conductive trace coupling the cathode contact to the second socket.
2. The solar cell receiver of claim 1 wherein the diode comprises a Schottky bypass diode.
3. The solar cell receiver of claim 1 wherein the second contact comprises electrically conductive material disposed on the perimeter of the n-polarity side of the solar cell.
4. The solar cell receiver of claim 1 wherein the second contact comprises electrically conductive material disposed adjacent to two edges of the n-polarity side of the solar cell.
5. The solar cell receiver of claim 1 comprising one or more wire bonds that couple the second contact to the second conductive trace.
6. The solar cell receiver of claim 1 wherein the first contact comprises a metal layer disposed on substantially the entire p-polarity side of the solar cell.
7. The solar cell receiver of claim 1 wherein the second conductive trace is disposed on a second surface of the board and the first conductive trace is disposed on a first surface of the board.
8. The solar cell receiver of claim 1 wherein the connector is adapted to provide electrical connection to one or more solar cell receivers.
9. The solar cell receiver of claim 1 wherein the diode is operable to prevent current flow through the solar cell in instances when the solar cell is not generating above a threshold voltage.
10. The solar cell receiver of claim 1 wherein the undercoating and the coating are different materials, and the undercoating directly contacts the bottom portion of the diode.