Sunbeams concentration lenses, process and apparatus for solar photovoltaic generator using concept of superposition

• US 20070113883A1
• Filed: 07/31/2006
• Published: 05/24/2007
• Est. Priority Date: 11/24/2005
• Status: Abandoned Application

• Current Assignee: Taihan-Techren Company Limited
• Original Assignee: Taihan-Techren Company Limited
• Inventors: Rhee, Jin-Geun, Yoo, Kwang-Sun
• Application Number:
  US11/496,731
• Publication Number:
  US 20070113883A1
• Time in Patent Office: Days
• US Class Current: 136/246
• CPC Class Codes: G02B 3/08 with discontinuous faces, e.g. Fresnel lens diffractive Fresnel lenses G02B5/1876
• CPC Class Codes: H01L 31/0543 comprising light concentrating means of the refractive type, e.g. lenses
• CPC Class Codes: Y02E 10/52 PV systems with concentrators

Abstract

The present invention provides a concentration method of sunbeams for a photovoltaic power generation and lens and apparatus used in the method. A method of concentrating sunbeams according to the present invention is characterized in that as a method of concentrating sunbeams on a concentration surface of a solar cell that is installed on a photovoltaic power generator, it comprises steps of installing a concentration lens (20) on the upper side of a solar cell in parallel to the concentration surface, which includes a plurality of unit lens (21) having areas corresponding to the areas of the concentration surface, and irradiating and concentrating superposingly the sunbeams incident on the respective unit lens to the concentration surface. As a result, the present invention has advantageously a best performance in a solar cell.

Claims

1. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition including a plurality of unit lenses (21) which are installed as a planar plate shape on the upper side of a solar cell (10) and have areas corresponding to the areas of a concentration surface (11) of the solar cell (10), wherein the unit lens (21) irradiates the sunbeams incident on them superposingly and concentrates them on the concentration surface (11).

2. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition according to claim 1, wherein the unit lens (21) includes one non-refractive light transmittance part (210) and a plurality of Fresnel lens (211) on one surface of which a plurality of saw blade type-refraction part (211a) are formed.

3. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition according to claim 2, wherein the light transmittance part (210) is installed on the vertical upper side of the concentration surface (11) and the Fresnel lens (211) is disposed surrounding the light transmittance (210).

4. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition according to claim 2, wherein the light transmittance part (210) is installed on the vertical upper side of the concentration surface (11) and the Fresnel lens (211) is disposed extending in the opposing direction of the light transmittance (210).

5. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition according to claim 34, wherein the saw blade type refraction part (211a) of the Fresnel lens (211) is formed in a vertical direction to a straight line running from the Fresnel lens (211) toward the middle of the light transmittance (210), and a inclined angle (θ

) of the saw blade type refraction part (211a) in respective Fresnel lens is decreased gradually from the light transmittance part (210).

14. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition according to claim 4, wherein the saw blade type refraction part (211a) of the Fresnel lens (211) is formed in a vertical direction to a straight line running from the Fresnel lens (211) toward the middle of the light transmittance (210), and a inclined angle (θ

) of the saw blade type refraction part (211a) in respective Fresnel lens is decreased gradually from the light transmittance part (210).

6. A sunbeams concentration lens for a photovoltaic power generation using a concept of superposition including a plurality of unit lenses (21) which are installed on the upper side of a concentration surface (11) formed on a solar cell (10) and have areas corresponding to the areas of the concentration surface (11), wherein the unit lens (21) irradiates the sunbeams incident on them superposingly and concentrates them on the concentration surface (11), and includes one non-refractive light transmittance part (210) that is installed in parallel on the vertical upper side of the concentration surface (11) and a plurality of Fresnel lens (211) extending downside in an opposing direction at a predetermined angle (α

), wherein the inclined angle (α

) of the Fresnel lens (211) is set at a range of 10 to 20 degree on the basis of the light transmittance (210).

7. A method of concentrating sunbeams on a concentration surface (11) of a solar cell (10) that is installed on a photovoltaic power generator comprising steps of:

installing a concentration lens (20) on the upper side of a solar cell in parallel to the concentration surface (11), which includes a plurality of unit lens (21) having areas corresponding to the areas of the concentration surface (11); and

irradiating and concentrating superposingly the sunbeams incident on the respective unit lens (21) to the concentration surface (11).

8. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition comprising:

a solar cell (10) one side of which is a concentration surface (11);

a concentration lens (20) including a plurality of unit lenses (21) which are installed as a planar plate shape on the upper side of a solar cell (10) and have areas corresponding to the areas of a concentration surface (11) of the solar cell (10); and

a frame that fixes the concentration lens (20) in a proper position, wherein the unit lens (21) irradiates the sunbeams incident on them superposingly and concentrates them on the concentration surface (11).

9. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition according to claim 8, wherein the unit lens (21) includes one non-refractive light transmittance part (210) and a plurality of Fresnel lens (211) where a plurality of saw blade type-refraction part (211a) are formed on one surface.

10. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition according to claim 9, wherein the light transmittance part (210) is installed on the vertical upper side of the concentration surface (11) and the Fresnel lens (211) is disposed surrounding the light transmittance (210).

11. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition according to claim 9, wherein the light transmittance part (210) is installed on the vertical upper side of the concentration surface (11) and the Fresnel lens (211) is disposed extending in the opposing direction of the light transmittance (210).

12. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition according to claim 10, wherein the saw blade type refraction part (211a) of the Fresnel lens 211 is formed in a vertical direction to a straight line running from the Fresnel lens (211) toward the middle of the light transmittance (210), and a inclined angle (θ

) of the saw blade type refraction part (211a) in respective Fresnel lens is decreased gradually from the light transmittance part (210).

15. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition according to claim 11, wherein the saw blade type refraction part (211a) of the Fresnel lens 211 is formed in a vertical direction to a straight line running from the Fresnel lens (211) toward the middle of the light transmittance (210), and a inclined angle (θ

) of the saw blade type refraction part (211a) in respective Fresnel lens is decreased gradually from the light transmittance part (210).

13. A sunbeams concentration apparatus for a photovoltaic power generation using a concept of superposition including:

a solar cell (10) where a concentration surface (11) is formed on one side;

a concentration lens (20) including a plurality of unit lenses (21) which are installed as a planar plate shape on the upper side of a solar cell (10) and have areas corresponding to the areas of a concentration surface (11) of the solar cell (10); and

a frame that fixes the concentration lens (20) in a proper position, wherein the unit lens (21) irradiates the sunbeams incident on them superposingly and concentrates them on the concentration surface (11), and includes one non-refractive light transmittance part (210) that is installed in parallel on the vertical upper side of the concentration surface (11) and a plurality of Fresnel lens (211) extending downside in the opposing direction of the light transmittance part (210) at a predetermined angle (α

), wherein the inclined angle (α

) of the Fresnel lens (211) is set at a range of 10 to 20 degree on the basis of the light transmittance (210).