A solar panel includes a plurality of solar cells, a bypass diode unit, and a heat spreader. The bypass diode unit includes a bypass diode coupled in an electrical shunting configuration across at least a first solar cell of the plurality of solar cells to bypass current around at least the first so
A solar panel includes a plurality of solar cells, a bypass diode unit, and a heat spreader. The bypass diode unit includes a bypass diode coupled in an electrical shunting configuration across at least a first solar cell of the plurality of solar cells to bypass current around at least the first solar cell in an event of failure of the first solar cell. The heat spreader is disposed over a portion of one or more of the solar cells. The bypass diode unit is disposed on a first side of the heat spreader with the bypass diode in thermal contact with the heat spreader. A second side of the heat spreader is mounted in thermal contact with the one or more of the solar cells to dissipate heat generated in the bypass diode to the one or more of the solar cells.
대표청구항▼
1. An apparatus, comprising: a plurality of solar cells;a bypass diode unit including a bypass diode coupled in an electrical shunting configuration across at least a first solar cell of the plurality of solar cells to bypass current around at least the first solar cell in an event of failure of the
1. An apparatus, comprising: a plurality of solar cells;a bypass diode unit including a bypass diode coupled in an electrical shunting configuration across at least a first solar cell of the plurality of solar cells to bypass current around at least the first solar cell in an event of failure of the first solar cell;a heat spreader disposed over a portion of one or more of the solar cells, wherein the bypass diode unit is disposed on a first side of the heat spreader with the bypass diode in thermal contact with the heat spreader and a second side of the heat spreader in thermal contact with the one or more of the solar cells to dissipate heat generated in the bypass diode to the one or more of the solar cells, wherein the solar cells are disposed on the second side of the heat spreader opposite the first side, wherein the heat spreader includes multiple film layers stacked in physical contact with each other that conduct heat from the bypass diode to the one or more of the solar cells, wherein the multiple film layers monotonically increase in surface area with a largest area layer being proximate to the bypass diode and a smallest area layer being proximate to the one or more of the solar cells. 2. The apparatus of claim 1, wherein the heat spreader comprises a flexible heat spreader and wherein the multiple film layers comprise two or more layers of a flexible film that conducts heat from the bypass diode to the one or more of the solar cells. 3. The apparatus of claim 2, wherein the flexible film comprises a pyrolytic graphite sheet (“PGS”). 4. The apparatus of claim 2, wherein the two or more layers of the flexible film are concentrically stacked and aligned under the bypass diode. 5. The apparatus of claim 4, wherein the two or more layers of the flexible film comprise three layers of pyrolytic graphite sheets. 6. The apparatus of claim 1, wherein the bypass diode unit includes: a flexible substrate having a first side and a second side;the bypass diode disposed on the first side;electrical leads extending from the second side; andcontacts extending through the flexible substrate to electrically connect the bypass diode on the first side to the electrical leads on the second side. 7. The apparatus of claim 6, further comprising: an electrical insulating strip disposed between the heat spreader and the bypass diode unit to electrically insulate the electrical leads from the heat spreader, wherein the electrical insulating strip includes a hole under the bypass diode; anda thermally conductive paste disposed in the hole to thermally connect the bypass diode to the heat spreader. 8. The apparatus of claim 1, further comprising: a single sided adhesive tape disposed between the heat spreader and the one or more of the solar cells, wherein an adhesive side of the single sided adhesive tape faces the heat spreader to adhere to the heat spreader, wherein the single sided adhesive tape electrically insulates the heat spreader from the one or more of the solar cells. 9. The apparatus of claim 8, further comprising: single sided adhesive tabs bridging the heat spreader and the one or more of the solar cells to secure the heat spreader to the one or more of the solar cells. 10. An aerial vehicle, comprising: a wing having a wing-skin;a solar panel embedded into the wing-skin to power one or more electrical sub-systems of the aerial vehicle, the solar panel including: a plurality of solar cells;a bypass diode unit including a bypass diode coupled in an electrical shunting configuration across a group of the solar cells to bypass current around the group in an event of failure of one of the solar cells within the group;a heat spreader disposed over a portion of one or more of the solar cells, wherein the bypass diode unit is disposed on a first side of the heat spreader with the bypass diode in thermal contact with the heat spreader and a second side of the heat spreader in thermal contact with the one or more of the solar cells to dissipate heat generated in the bypass diode to the one or more of the solar cells, wherein the solar cells are disposed on the second side of the heat spreader opposite the first side, wherein the heat spreader includes two or more layers of thermally conductive film stacked on top of each other, wherein the two or more layers of thermally conductive film monotonically increase in surface area with a largest area layer being proximate to the bypass diode and a smallest area layer being proximate to the one or more of the solar cells. 11. The aerial vehicle of claim 10, wherein the heat spreader comprises a flexible heat spreader and wherein the two or more layers of thermally conductive film comprise two or more layers of flexible film that conduct heat from the bypass diode to the one or more of the solar cells. 12. The aerial vehicle of claim 11, wherein each of the two or more layers of flexible film comprises a pyrolytic graphite sheet (“PGS”). 13. The aerial vehicle of claim 11, wherein the two or more layers of the flexible film are concentrically stacked and aligned under the bypass diode. 14. The aerial vehicle of claim 13, wherein the two or more layers of the flexible film comprise three layers of pyrolytic graphite sheets. 15. The aerial vehicle of claim 10, wherein the bypass diode unit includes: a flexible substrate having a first side and a second side;the bypass diode disposed on the first side;electrical leads extending from the second side; andcontacts extending through the flexible substrate to electrically connect the bypass diode on the first side to the electrical leads on the second side. 16. The aerial vehicle of claim 15, further comprising: an electrical insulating strip disposed between the heat spreader and the bypass diode unit to electrically insulate the electrical leads from the heat spreader, wherein the electrical insulating strip includes a hole under the bypass diode; anda thermally conductive paste disposed in the hole to thermally connect the bypass diode to the heat spreader. 17. The aerial vehicle of claim 10, further comprising: a single sided adhesive tape disposed between the heat spreader and the one or more of the solar cells, wherein an adhesive side of the single sided adhesive tape faces the heat spreader to adhere to the heat spreader, wherein the single sided adhesive tape electrically insulates the heat spreader from the one or more of the solar cells. 18. The aerial vehicle of claim 17, further comprising: single sided adhesive tabs bridging the heat spreader and the one or more of the solar cells to secure the heat spreader to the one or more of the solar cells. 19. An apparatus, comprising: a plurality of solar cells;a bypass diode unit including a bypass diode coupled in an electrical shunting configuration across at least a first solar cell of the plurality of solar cells to bypass current around at least the first solar cell in an event of failure of the first solar cell; anda heat spreader disposed over a portion of two or more of the solar cells, wherein the bypass diode unit is disposed on a first side of the heat spreader with the bypass diode in thermal contact with the heat spreader and a second side of the heat spreader in thermal contact with the two or more of the solar cells to dissipate heat generated in the bypass diode to the one or more of the solar cells, wherein the two or more solar cells are disposed on the second side of the heat spreader opposite the first side, wherein the heat spreader includes stacked film layers that conduct heat from the bypass diode to the one or more of the solar cells, wherein the stacked film layers monotonically increase in surface area with a largest area layer being proximate to the bypass diode and a smallest area layer being proximate to the one or more of the solar cells,wherein the bypass diode is physically disposed between the two or more of the solar cells. 20. The apparatus of claim 19, further comprising: an electrically insulating layer different than the stacked film layers disposed between the stacked film layers and the one or more of the solar cells to electrically insulate the heat spreader from the one or more of the solar cells.
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