Fresnel lens structure for solar power generation device

Abstract

The utility model relates to the technical field of Fresnel lenses, in particular to a Fresnel lens structure for a solar power generation device, which comprises two Fresnel lenses and a support frame connected onto an external frame, the support frame is arranged between the two Fresnel lenses, the support frame and the two Fresnel lenses are all obliquely arranged, and the Fresnel lenses are arranged on the support frame. The first elastic rubber strip and the second elastic rubber strip are used as the contact surfaces with the Fresnel lens, and the elasticity of the first elastic rubber strip and the second elastic rubber strip ensures that the Fresnel lens does not deform due to thermal expansion, so that the Fresnel lens is not prone to deformation due to thermal expansion, and the Fresnel lens is not prone to deformation due to deformation due to the elasticity of the first elastic rubber strip and the second elastic rubber strip. The Fresnel lenses can be fully supported from the side face, and the situation that when the Fresnel lenses forming a two-dimensional array are obliquely arranged, the Fresnel lenses make contact together in a point contact mode, and consequently one position of each Fresnel lens is deformed due to the fact that the pressure intensity is too large is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of fresnel lens, specifically is a solar power generation device is with the structure of fresnel lens. BACKGROUND

[0002] Fresnel lens through its unique design and optical properties, so that its application in solar power generation device, can focus sunlight to a small area, thereby improving the power generation efficiency of solar cells.

[0003] In prior art, such as patent application number "CN201020139750.4" proposed the structure of fresnel lens, including several interval ears, set in the edge of the structure of fresnel lens, when the structure of fresnel lens is in two-dimensional array, two adjacent interval ears form a reserved space, can prevent the structure of fresnel lens from extrusion deformation due to environmental factors.

[0004] But in prior art, in order to make rational use of space, maximum absorption of solar energy, usually will set up the inclined fresnel lens, and the structure of fresnel lens proposed in the above patent application, when setting up the inclined, two fresnel lenses are in contact through interval ear, two fresnel lenses will produce extrusion in the inclined direction, and form compression point at interval ear, the pressure of fresnel lens is too large, easy to cause the deformation of fresnel lens when thermal expansion at interval ear, affect the flatness of fresnel lens. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a structure of fresnel lens for solar power generation device to solve the problems proposed in the above background.

[0006] The utility model can be realized by the following technical scheme:

[0007] A structure of fresnel lens for solar power generation device, including two fresnel lenses and the support frame of connection on external frame, support frame sets up between two fresnel lenses, the support frame and two fresnel lenses are all set up the inclined, both sides of support frame are all set up the recess, recess is fixedly connected with first elastic rubber strip, and first elastic rubber strip is used to and fresnel lens contact;

[0008] The periphery of the fresnel lens is provided with an opaque UV ink layer, and the bottom of the fresnel lens is provided with two intersecting support plates, the top of both ends of the support plates is fixedly connected with a fixed shaft, the outer surface of the fixed shaft is fixedly connected with an elastic rubber ring, and the four corners of the fresnel lens are provided with through holes, the elastic rubber ring is arranged in the through hole of the fresnel lens and fixedly connected with the inner wall of the through hole.

[0009] Preferably, the Fresnel lens is provided with a limiting support away from one side of the support frame, a groove is formed in one side of the limiting support, a second elastic rubber strip is fixedly connected in the groove of the limiting support, and the second elastic rubber strip is used to contact the Fresnel lens.

[0010] Preferably, the support plate is fixedly connected with a fixed block at both ends, and the fixed blocks at both ends of the support plate are fixedly installed with the support frame and the limiting support respectively.

[0011] Preferably, the two support plates are fixedly connected at intersections, the intersections of the support plates are provided with positioning holes, and the support plates are provided with light-transmitting notches.

[0012] Preferably, a connecting support is fixedly connected between the two limiting supports, one side of the connecting support is fixedly connected with the support frame, and the connecting support is provided with a fixed notch.

[0013] Preferably, the bottom of the support frame is fixedly connected with two fixed rings, and the bottom of the limiting support is fixedly connected with a positioning protrusion.

[0014] The utility model discloses beneficial effect:

[0015] The utility model discloses a UV ink layer provides the shading and the edge sealing effect for the four -around of Fresnel lens, so that the Fresnel lens does not need to set the frame when using, avoids the extrusion of thermal expansion between the frame and Fresnel lens, and simultaneously utilizes the first elastic rubber strip and the second elastic rubber strip as the contact surface of the Fenner lens, and the elasticity of the first elastic rubber strip and the second elastic rubber strip guarantees that the thermal expansion of the Fresnel lens does not deform, can fully support the Fresnel lens from the side, avoids the two -dimensional array of the Fresnel lens when being inclined to set, and when the Fresnel lens contacts together through the point contact mode, causes the deformation of the place of the Fresnel lens because of the excessive pressure. ACCURACY

[0016] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will briefly introduce the drawing needed to be used in the embodiment or prior art description, and obviously, for the ordinary skilled person in the art, other drawings can also be obtained without paying the creative labor according to these drawings;

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the structure enlarged view of A in the utility model Figure 1 The front view of the Fresnel lens in the utility model;

[0019] Figure 3 It is the structure enlarged view of A in the utility model Figure 1 ​

[0020] Figure 4 is the utility model Figure 1 structure diagram of the bottom of the Fresnel lens;

[0021] Figure 5 is the utility model Figure 4 structure enlarged view of B.

[0022] The reference signs in the drawings are as follows:

[0023] 1, Fresnel lens; 2, support frame; 3, first elastic rubber strip; 4, UV ink layer; 5, support plate; 501, positioning hole; 502, light transmission notch; 6, fixed shaft; 7, elastic rubber ring; 8, limiting support; 801, second elastic rubber strip; 9, fixed block; 10, connecting support; 11, fixed ring; 12, positioning protrusion; 13, fixed notch. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0025] As Figure 1 , Figure 2 and Figure 3 , a Fresnel lens structure for a solar power generation device, comprising two Fresnel lenses 1 and a support frame 2 connected to an external frame, the Fresnel lenses 1 are installed on a bearing frame of an external solar power generation device, and a solar cell module is also arranged on the solar power generation device, and the solar power generation by using the Fresnel lens is prior art, and the application only relates to the improvement of the structure of the Fresnel lens part, and does not involve the improvement of the solar power generation device except the Fresnel lens part, therefore, how to utilize the Fresnel lens to generate solar power will not be described, the support frame 2 is arranged between the two Fresnel lenses 1, the support frame 2 and the two Fresnel lenses 1 are both arranged obliquely, the plane of the external bearing frame providing support for the support frame 2 is also arranged obliquely, recesses are formed in the two sides of the support frame 2, first elastic rubber strips 3 are fixedly connected in the recesses, and the first elastic rubber strips 3 are used to contact the Fresnel lenses 1;

[0026] As Figure 1 , Figure 2 and Figure 3The periphery of the Fresnel lens 1 is provided with an opaque UV ink layer 4. The UV ink layer 4 is formed by opaque ink coating. The opaque ink is black or other opaque color, which can avoid light escaping from the periphery of the Fresnel lens 1, enhance the light condensing ability of the Fresnel lens 1, and play the role of edge sealing of the Fresnel lens 1, thereby protecting the Fresnel lens 1. The bottom of the Fresnel lens 1 is provided with two intersecting support plates 5. The intersection of the two support plates 5 is fixed together to form an X-shaped structure. The top of both ends of the support plate 5 is fixedly connected with a fixed shaft 6. The outer surface of the fixed shaft 6 is fixedly connected with an elastic rubber ring 7. The four corners of the Fresnel lens 1 are provided with through holes. The elastic rubber ring 7 is arranged in the through hole of the Fresnel lens 1 and is fixedly connected with the inner wall of the through hole, thereby realizing the positioning and supporting of the Fresnel lens 1.

[0027] As Figure 4 and Figure 5 , the Fresnel lens 1 is provided with a limiting support 8 away from the support frame 2. The limiting support 8 is provided with a groove on one side. The limiting support 8 is fixedly connected with a second elastic rubber strip 801 in the groove. The second elastic rubber strip 801 is used to contact the Fresnel lens 1. The limiting support 8 is installed on the external bearing frame.

[0028] As Figure 4 and Figure 5 , the both ends of the support plate 5 are fixedly connected with a fixed block 9. The fixed block 9 of both ends of the support plate 5 is fixedly installed with the support frame 2 and the limiting support 8, so that the support frame 2 and the limiting support 8 provide support for the support plate 5 through the fixed block 9.

[0029] As Figure 4 , the two support plates 5 are fixedly connected at the intersection. The intersection of the support plate 5 is provided with a positioning hole 501. The support plate 5 is provided with a light-transmitting notch 502. The light-transmitting notch 502 reduces the shielding of the Fresnel lens 1 and enhances the light-transmitting ability of the Fresnel lens 1.

[0030] As Figure 4 , the two limiting supports 8 are fixedly connected with a connecting support 10. One side of the connecting support 10 is fixedly connected with the support frame 2. The connecting support 10 is provided with a fixed notch 13, which can assist the installation and fixation between the connecting support 10 and the external bearing frame.

[0031] As Figure 4 , the bottom of the support frame 2 is fixedly connected with two fixed rings 11. The bottom of the limiting support 8 is fixedly connected with a positioning protrusion 12. When the limiting support 8 is installed on the external bearing frame, the positioning protrusion 12 can be combined together with the inner recess of the external bearing frame, thereby assisting the positioning of the limiting support 8.

[0032] The working principle of the Fresnel lens structure for the solar power generation device is as follows:

[0033] The support frame 2 and the two limiting supports 8 are both obliquely installed on the bearing frame of the external solar power generation device, at this time, the Fresnel lens 1 is kept oblique (as shown in Figure 2 ), one side of the Fresnel lens 1 located at a higher position abuts against the first elastic rubber strip 3 of the support frame 2, which can provide auxiliary support for the Fresnel lens 1, and when one of the Fresnel lenses 1 expands due to heat, the other Fresnel lens 1 will not be squeezed.

[0034] The two sides of the two Fresnel lenses 1 away from each other abut against the second elastic rubber strips 801 of the two limiting supports 8 respectively, and the first elastic rubber strip 3 and the second elastic rubber strip 801 with elasticity are used to release the Fresnel lens 1, so that when the Fresnel lens 1 expands and squeezes the first elastic rubber strip 3 and the second elastic rubber strip 801, the first elastic rubber strip 3 and the second elastic rubber strip 801 are compressed and shrunk, reducing the compression on the Fresnel lens 1.

[0035] Compared with the related art, the Fresnel lens structure for the solar power generation device has the following beneficial effects:

[0036] The UV ink layer 4 is provided to provide shading and edge sealing for the four sides of the Fresnel lens 1, so that the frame does not need to be provided outside when the Fresnel lens 1 is used, avoiding the squeezing caused by thermal expansion between the frame and the Fresnel lens 1, and the first elastic rubber strip 3 and the second elastic rubber strip 801 are used as the contact surface of the Fresnel lens 1, and the elasticity of the first elastic rubber strip 3 and the second elastic rubber strip 801 ensures that the thermal expansion of the Fresnel lens 1 will not deform, and can fully support the Fresnel lens 1 from the side, avoiding the deformation of the Fresnel lens 1 caused by the excessive pressure when the two-dimensional array of the Fresnel lenses 1 are obliquely arranged and the Fresnel lenses 1 are contacted together through point contact.

[0037] The above shows and describes the basic principle, main features and advantages of the utility model. The skilled person in the art should understand that the utility model is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model.

Claims

1. A Fresnel lens structure for a solar power generation device, comprising two Fresnel lenses (1) and a support frame (2) connected to an outer frame, the support frame (2) being provided between the two Fresnel lenses (1), characterized in that, The support frame (2) and the two Fresnel lenses (1) are inclined to be arranged, the two sides of the support frame (2) are provided with grooves, the first elastic rubber strips (3) are fixedly connected in the grooves, and the first elastic rubber strips (3) are used for being in contact with the Fresnel lenses (1); The Fresnel lens (1) is provided with the opaque UV ink layer (4) around, the bottom of the Fresnel lens (1) is provided with the two intersecting support plates (5), the top of the two ends of the support plate (5) is fixedly connected with the fixed shaft (6), the outer surface of the fixed shaft (6) is fixedly connected with the elastic rubber ring (7), the four corners of the Fresnel lens (1) are provided with the through holes, the elastic rubber ring (7) is arranged in the through hole of the Fresnel lens (1), and is fixedly connected with the inner wall of the through hole.

2. The Fresnel lens structure for a solar power generation device according to claim 1, wherein The side, away from the support frame (2), of the Fresnel lens (1) is provided with the limiting support (8), the side of the limiting support (8) is provided with the groove, the second elastic rubber strip (801) is fixedly connected in the groove of the limiting support (8), and the second elastic rubber strip (801) is used for being in contact with the Fresnel lens (1).

3. The Fresnel lens structure for a solar power generation device according to claim 2, wherein The two ends of the support plate (5) are fixedly connected with the fixed blocks (9), and the fixed blocks (9) of the two ends of the support plate (5) are fixedly installed with the support frame (2) and the limiting support (8) respectively.

4. The Fresnel lens structure for a solar power generation device according to claim 2, wherein The two support plates (5) are fixedly connected at the intersection, the intersection of the support plate (5) is provided with the positioning hole (501), and the support plate (5) is provided with the light-transmitting notch (502).

5. The Fresnel lens structure for a solar power generation device according to claim 1, wherein The two limiting supports (8) are fixedly connected with the connecting support (10), one side of the connecting support (10) is fixedly connected with the support frame (2), and the connecting support (10) is provided with the fixed notch (13).

6. The Fresnel lens structure for a solar power generation device according to claim 1, wherein The bottom of the support frame (2) is fixedly connected with the two fixed rings (11), and the bottom of the limiting support (8) is fixedly connected with the positioning convex (12).

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