Rigidly mounted tracking solar panel and method

Patent metadata

Field	Value
Publication number	US-9954482-B2
Application number	US-201514880560-A
Country	US
Kind code	B2
Filing date	Oct 12, 2015
Priority date	Oct 12, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A rigidly mountable solar panel includes lenses supported above a movable panel to focus sunlight onto photovoltaic material carried on the movable panel. Flexible supports space the movable panel at the focal points of the lenses, and a servo-mechanism enables movement of the movable panel to adjust position as the focal point moves with the sun. A light detector on the movable panel, sensing movement of the focal point signals the servo-mechanism to adjust the position of the movable panel automatically, thereby tracking the sun's movement. Concentrating sunlight on photovoltaic material selected to have higher conversion efficiency increases output. Segmenting the photovoltaic material so the output of the segments can be combined in a series-parallel relationship and using mirrors on the ends of the movable panel to reflect sunlight onto the segments allows electricity that is generated by the photovoltaic material to be more uniform during daylight.

First claim

What is claimed is:

1. A solar panel, comprising:
a plurality of lenses, a lens of said plurality of lenses being curved to focus light;
a movable panel;
photovoltaic material carried on said movable panel, said photovoltaic material generating electric current when light is focused on said photovoltaic materials by said plurality of lenses;
wherein the photovoltaic material is divided into a plurality of segments disposed in a linear series, the linear series having a long side and a short side, the plurality of segments of the linear series comprising a first segment defining a first longitudinal end of the linear series and a second segment defining a second longitudinal end of the linear series, the second longitudinal end opposite the first longitudinal end; wherein the plurality of segments in the linear series are abuttingly arranged so that each segment physically abuts, along a longitudinal axis parallel to the long side, at least one neighboring segment of the linear series;
a plurality of supports connecting said plurality of lenses to said movable panel; and
a servo-mechanism connected to said movable panel, said servo-mechanism moving said movable panel to maintain said light from said plurality of lenses on said photovoltaic material;
a first mirror located proximate said first segment and disposed perpendicular to the longitudinal axis of the linear series to reflect said light onto said first segment.

2. The solar panel of claim 1 , wherein a support of said plurality of supports has flexible joints.

3. The solar panel of claim 2 , wherein said support has an upper and a lower flexible joint.

4. The solar panel of claim 1 , wherein said light is sunlight from the sun, and wherein said solar panel further comprises a detector on said movable panel, said detector being responsive to movement of a focal point with respect to said detector, said detector providing position information related to said movement of said focal point, and wherein said servo-mechanism is in communication with said detector, said servo-mechanism moving said movable panel to maintain said focal point on said detector.

5. The solar panel of claim 1 , wherein said lens is a spherical lens.

6. The solar panel of claim 1 , wherein said lens is a cylindrical lens.

7. The solar panel of claim 1 , wherein said lens is a Fresnel lens.

8. The solar panel of claim 1 , wherein said lens is made of optical plastic.

9. The solar panel of claim 1 , wherein said plurality of segments is arranged in segment pairs and electricity generated by said segment pairs is combined in series.

10. The solar panel of claim 1 , further comprising a second mirror located proximate said second segment and disposed perpendicular to the longitudinal axis of the linear series to reflect light onto said second segment.

11. A solar panel, comprising:
a plurality of lenses;
a movable panel mounted so as to be movable relative to the plurality of lenses;
a plurality of supports movably connecting the movable panel to the plurality of lenses;
a first set of solar cells carried by the movable panel; the first set comprising first, second, third, fourth, fifth, and sixth solar cells; the first set of solar cells configured to generate electric current when light is focused on the first set of solar cells by the plurality of lenses;
wherein the solar cells of the first set are physically disposed in a first linear series in a sequence of the first solar cell, the third solar cell, the fifth solar cell, the sixth solar cell, the fourth solar cell, the second solar cell; wherein the first solar cell defines a longitudinally first end of the first linear series; wherein the second solar cell defines a longitudinally second end of the first linear series, wherein the second end is opposite the first end;
a second set of solar cells carried by the movable panel, the second set of solar cells physically disposed in a second linear series; the second linear series disposed in spaced relation to the first linear series;
a photodetector carried by the movable panel;
a servo-mechanism connected to the movable panel and configured to move the movable panel to maintain the light from the plurality of lenses on the first set of solar cells based on alignment data from the photodetector;
a first mirror disposed transverse to a longitudinal axis of the first linear series so as to reflect light onto the first solar cell; wherein the first mirror is disposed closer to the first solar cell than to the second solar cell;
wherein the solar cells of the first linear series are grouped in pairs, wherein there are at least three pairs; wherein the solar cells of the first set are electrically connected together such that:
intra-pair connections are in parallel;
inter-pair connections are in series;

wherein the first solar cell and the second solar cell are paired in a first pair;
wherein a second pair comprises the third and fourth solar cells and is disposed between the first and second solar cells;
wherein a third pair comprises the fifth and sixth solar cells and is disposed between the third and fourth solar cells.

12. The solar panel of claim 11 , further comprising a second mirror disposed transverse to the longitudinal axis of the first linear series so as to reflect light onto the second solar cell; wherein the second mirror is disposed closer to the second solar cell than to the first solar cell.

13. The solar panel of claim 11 , wherein the third solar cell is disposed adjacent the first solar cell; wherein the fourth solar cell is disposed adjacent the second solar cell; wherein the third and fourth solar cells are paired and electrically connected in parallel.

14. The solar panel of claim 11 wherein the first linear series further comprises a seventh solar cell and an eighth solar cell; wherein a fourth pair comprises the seventh and eighth solar cell and is disposed between the fifth and sixth solar cells.

15. The solar panel of claim 14 , wherein the first linear series further comprises an ninth solar cell and a tenth solar cell; wherein a fifth pair comprises the ninth and tenth solar cell and is disposed between the seventh and eighth solar cells; wherein the ninth and tenth solar cells physically abut each other.

Assignees

• Boeing Co

Inventors

• Jungwirth Douglas R

Classifications

• F24S2020/186

  allowing change of position for optimization of heat collection · CPC title

• H02S20/32 Primary

  specially adapted for solar tracking · CPC title

• F24S23/30

  with lenses · CPC title

• H02S40/22

  Light-reflecting or light-concentrating means (directly associated with the PV cell or integrated with the PV cell H10F77/42) · CPC title

• F24S2030/11

  Driving means · CPC title