A solar energy collector

Abstract

The present application provides a solar concentrator, which relates to the field of photovoltaic lighting technology. The solar concentrator includes a focusing layer for focusing sunlight; a photovoltaic panel located below the focusing layer and electrically connected to a power storage device; an optical fiber having a first end and a second end arranged relatively, the first end slidingly passing through the photovoltaic panel and extending to the focus of the focusing layer to receive sunlight; an adjustment component connected to the optical fiber to adjust the distance between the first end and the photovoltaic panel; a lighting component arranged in a dark room for providing lighting for the dark room; the lighting component is connected to the power storage device or the second end; when the lighting component is connected to the power storage device, the power storage device provides electrical energy to the lighting component; when the lighting component is connected to the second end, the optical fiber provides light energy to the lighting component. The solar concentrator of the present application improves the utilization rate of the light source and is conducive to use in a small space.

Description

Technical Field

[0001] The present application relates to the field of photovoltaic lighting technology, and in particular to a solar collector. Background Art

[0002] Photovoltaic power generation has become one of the main ways to utilize solar energy due to its high efficiency and safety. However, in the field of lighting, photovoltaic lighting has a low conversion efficiency due to the two-stage conversion process from sunlight to electricity and then to light. In contrast, direct use of sunlight for lighting, including the use of optical fiber to transmit sunlight in low-rise buildings and other places where windows cannot be used to meet indoor lighting requirements, is more efficient and improves lighting comfort, but there are also problems such as the lack of lighting on cloudy days and at night.

[0003] In the prior art, conventional photovoltaic lighting and fiber optic lighting are simply combined, that is, photovoltaic panels are usually additionally provided outside the fiber optic lighting device to generate electricity to meet lighting needs on cloudy days or at night.

[0004] However, in the above method, the photovoltaic panel is additionally arranged on the side of the fiber optic lighting device, and needs to occupy part of the light source separately to generate electricity. The utilization rate of the light source is low, which is not conducive to use in places with small spaces such as small roofs. Summary of the invention

[0005] The present application provides a solar concentrator to solve the problem that a photovoltaic panel is additionally arranged on the side of a fiber optic lighting device, and needs to occupy part of the light source separately for power generation, resulting in low utilization rate of the light source and being unfavorable for use in small spaces such as small roofs.

[0006] The present application provides a solar concentrator, a concentrating layer, for focusing sunlight;

[0007] A photovoltaic panel, located below the light-collecting layer and electrically connected to a power storage device;

[0008] An optical fiber having a first end and a second end arranged opposite to each other, wherein the first end is slidably arranged on the photovoltaic panel and extends to the focus of the light-concentrating layer to receive sunlight;

[0009] an adjustment component, connected to the optical fiber, for adjusting the distance between the first end and the photovoltaic panel;

[0010] A lighting element is arranged in the dark room and is used to provide lighting for the dark room;

[0011] The lighting component is connected to the power storage device or the second end; when the lighting component is connected to the power storage device, the power storage device provides electrical energy to the lighting component; when the lighting component is connected to the second end, the optical fiber provides light energy to the lighting component.

[0012] In some embodiments, the solar concentrator also includes a mounting frame, the focusing layer and the photovoltaic panel are both arranged on the mounting frame, the adjustment assembly includes a rack, a gear and a first driving member, the rack is slidably arranged on the mounting frame and is connected to the optical fiber to drive the first end to move, the gear is rotatably arranged on the mounting frame and meshes with the rack, and the first driving member is connected to the gear to drive the gear to rotate.

[0013] In some embodiments, the first driving member includes a motor and a controller. The motor is disposed on the mounting frame and connected to the gear. The controller is disposed in the darkroom and electrically connected to the motor for controlling the motor.

[0014] In some embodiments, the area of ​​the photovoltaic panel is smaller than or equal to the area of ​​the light-concentrating layer, and larger than or equal to the area of ​​the light spot formed by the light-concentrating layer on the photovoltaic panel.

[0015] In some embodiments, the distance from the photovoltaic panel to the light-concentrating layer is greater than or equal to the focal length of the light-concentrating layer.

[0016] In some embodiments, the distance between the first end and the photovoltaic panel is r, , where f is the focal length of the light-gathering layer, is the distance between two opposite sides of the first cross section perpendicular to the thickness direction of the light-gathering layer, wherein the first cross section is a surface formed by cutting the light-gathering layer along the vertical direction, It is the distance between two opposite sides of the first cross section perpendicular to the thickness direction of the photovoltaic panel (300).

[0017] In some embodiments, the distance from the focus of the light-collecting layer to the first end is L, ,in, , f is the focal length of the light-focusing layer, and D is the diameter of the optical fiber.

[0018] In some embodiments, the distance from the focus of the light-collecting layer to the first end is L, .

[0019] In some embodiments, the mounting frame includes a first mounting layer, a second mounting layer, and a third mounting layer that are arranged in parallel in sequence, the first mounting layer is provided with a mounting groove, the focusing layer is arranged in the mounting groove, the photovoltaic panel is arranged on the second mounting layer, the optical fiber passes through the second mounting layer, and the adjustment component is arranged in the third mounting layer.

[0020] In some embodiments, the mounting brackets are provided in plurality, the plurality of mounting brackets are connected in parallel to form a whole, and the second ends of the optical fibers of the plurality of mounting brackets are all connected to the lighting component to provide light energy for the lighting component.

[0021] In some embodiments, a mounting base is provided at the bottom of the mounting frame, the mounting frame is hinged on the mounting base, a second driving member for driving the mounting frame to rotate is provided on the mounting base, a solar tracker is provided on the mounting frame, and the solar tracker is electrically connected to the second driving member to drive the mounting frame to rotate following sunlight.

[0022] The present application provides a solar concentrator, which sets a photovoltaic panel below a focusing layer. The first end of the optical fiber directly passes through the photovoltaic panel and extends between the photovoltaic panel and the focusing layer, and is located at the focus of the focusing layer to receive sunlight and transmit the sunlight to a lighting component connected to the second end to achieve lighting of a dark room; the distance between the first end of the optical fiber and the photovoltaic panel is adjusted by an adjusting component, thereby adjusting the light energy received by the first end to achieve adjustment of the light intensity in the dark room; and part of the sunlight that exceeds the optical fiber port continues to irradiate the photovoltaic panel, and the photovoltaic panel generates electricity and is stored in a power storage device, so as to provide lighting for the lighting component at night or on cloudy days, thereby improving the utilization rate of the light source and reducing the occupied area, so as to facilitate use in places with smaller spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0024] Figure 1 A schematic diagram of the principle of a solar collector provided in an embodiment of the present application;

[0025] Figure 2 A schematic diagram of the structure of a mounting frame for a solar collector provided in an embodiment of the present application;

[0026] Figure 3 for Figure 1 A schematic cross-sectional structure diagram of the positional relationship of the first end of the optical fiber;

[0027] Figure 4 A schematic diagram of the structure of the adjustment assembly of the solar collector provided in an embodiment of the present application;

[0028] Figure 5 A schematic diagram of the structure of a solar collector provided in an embodiment of the present application.

[0029] Description of reference numerals:

[0030] 100-mounting frame; 110-first mounting layer; 111-mounting groove; 120-second mounting layer; 121-first center hole; 130-third mounting layer; 200-focusing layer; 300-photovoltaic panel; 400-optical fiber; 410-first end; 420-second end; 500-power storage device; 600-lighting element; 700-adjustment assembly; 710-rack; 720-gear; 730-first drive element; 800-mounting seat.

[0031] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0032] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0033] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0034] In this application, unless otherwise clearly specified and limited, the terms "installation", "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] Photovoltaic power generation has become one of the main ways of utilizing solar energy due to its high efficiency and safety. However, in the field of lighting, photovoltaic lighting has a low conversion efficiency due to the two-stage conversion process from sunlight to electricity and then to light. In contrast, direct use of sunlight for lighting, including the use of optical fiber to transmit sunlight lighting in low-rise buildings and other places where windows cannot be used to meet indoor lighting requirements, is more efficient and improves lighting comfort, but there are also problems such as the lack of lighting on cloudy days and at night. In the prior art, traditional photovoltaic lighting and fiber optic lighting are simply combined, that is, usually photovoltaic panels are additionally set up outside the fiber optic lighting device to generate electricity to meet lighting needs on cloudy days or at night.

[0037] However, in the above method, the photovoltaic panel is additionally arranged on the side of the fiber optic lighting device, and needs to occupy part of the light source separately to generate electricity. The utilization rate of the light source is low, which is not conducive to use in places with small spaces such as small roofs.

[0038] In order to solve the above problems, the present application provides a solar concentrator, which sets a photovoltaic panel below a focusing layer. The first end of the optical fiber directly passes through the photovoltaic panel and extends between the photovoltaic panel and the focusing layer, and is located at the focus of the focusing layer to receive sunlight and transmit the sunlight to the lighting component connected to the second end to achieve lighting of the dark room; the distance between the first end of the optical fiber and the photovoltaic panel is adjusted by an adjusting component, thereby adjusting the light energy received by the first end to achieve adjustment of the light intensity in the dark room; and part of the sunlight exceeding the optical fiber port continues to irradiate the photovoltaic panel, and the photovoltaic panel generates electricity and is stored in the power storage device, so as to illuminate the lighting component at night or on cloudy days, thereby improving the utilization rate of the light source and reducing the occupied area, so as to facilitate use in places with smaller spaces.

[0039] The technical solution of the present application and how the technical solution of the present application solves the above-mentioned technical problems are described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0040] The present application provides a solar collector, referring to Figure 1 , Figure 2 and Figure 4 , the solar concentrator comprises a concentrating layer 200 for focusing sunlight;

[0041] The photovoltaic panel 300 is located below the light-collecting layer 200 and is electrically connected to the power storage device 500;

[0042] The optical fiber 400 has a first end 410 and a second end 420 which are arranged opposite to each other. The first end 410 is slidably arranged on the photovoltaic panel 300 and extends to the focus of the light-concentrating layer 200 to receive sunlight.

[0043] An adjustment component 700 connected to the optical fiber 400 to adjust the distance between the first end 410 and the photovoltaic panel 300;

[0044] The lighting element 600 is disposed in the dark room and is used to provide lighting for the dark room;

[0045] The lighting component 600 is connected to the power storage device 500 or the second end 420 ; when the lighting component 600 is connected to the power storage device 500 , the power storage device 500 provides electrical energy to the lighting component 600 ; when the lighting component 600 is connected to the second end 420 , the optical fiber 400 provides light energy to the lighting component 600 .

[0046] The solar energy concentrator further comprises a mounting frame 100 , on which the light concentrating layer 200 and the photovoltaic panel 300 are both arranged.

[0047] The light-collecting layer 200 is installed on the top of the mounting frame 100 to focus sunlight, focusing the sunlight irradiated on the light-collecting layer 200 to a focal point. The photovoltaic panel 300 is installed inside the mounting frame 100 and is located directly below the light-collecting layer 200, parallel to the focal point of the light-collecting layer 200. The optical fiber 400 has a first end 410 and a second end 420, wherein a certain length of the plastic wrapping layer of the first end 410 is stripped off to form a bare section, so that the exposure area of ​​the incident port of the optical fiber 400 is increased, more light energy is received, and the temperature resistance of the first end 410 is enhanced, reducing the damage to the plastic wrapping layer of the optical fiber 400 caused by long-term exposure to the focused sunlight. A hole is opened in the middle of the photovoltaic panel 300, and the hole on the photovoltaic panel 300 is located directly below the focus of the focusing layer 200. The exposed section of the first end 410 passes through the hole in the middle of the photovoltaic panel 300, extends to between the photovoltaic panel 300 and the focusing layer 200 and the photovoltaic panel 300, and the first end 410 is located at the focus of the focusing layer 200, so that most of the light can be received into the optical fiber 400 and guided into the dark room through the optical fiber 400 to illuminate the dark room.

[0048] The photovoltaic panel 300 is installed below the light-collecting layer 200 so that the photovoltaic panel 300 can collect part of the light energy formed by the light-collecting layer 200 that is larger than the port range of the first end 410 of the optical fiber 400, so as to compensate for the light damage in the illumination of the optical fiber 400 and improve the utilization rate of the light. At the same time, the occupied area of ​​the device is reduced, which is conducive to the use in small areas. The light is directly transmitted to the photovoltaic panel 300 below through the light-collecting layer 200 to form a focused light spot. The light irradiated on the first end 410 of the optical fiber 400 enters the optical fiber 400 and is directly used for illumination, while the part of the light spot that exceeds the first end 410 is irradiated on the photovoltaic panel 300, which is converted into electrical energy by the photovoltaic panel 300 and supplies power to the power storage device 500, thereby effectively reducing the coupling loss and improving the utilization rate of the light source of the device.

[0049] Among them, what is electrically connected to the power storage device 500 in the lighting component 600 is an LED lamp; what is connected to the second end 420 is an optical fiber light diffusion structure.

[0050] The power storage device 500 is a battery, but in other embodiments, other power storage devices may be used.

[0051] The light-concentrating layer 200 is a Fresnel lens to achieve the concentration of sunlight. In other embodiments, other light-concentrating lenses can also be used, which will not be described in detail here.

[0052] By adopting the above technical solution, the solar concentrator sets the photovoltaic panel 300 below the focusing layer 200, and the first end 410 of the optical fiber 400 directly passes through the photovoltaic panel 300 and extends between the photovoltaic panel 300 and the focusing layer 200, and is located at the focus of the focusing layer 200 to receive sunlight and transmit the sunlight to the second end 420 located in the dark room to achieve lighting of the dark room; the distance between the first end 410 of the optical fiber 400 and the photovoltaic panel 300 is adjusted by the adjustment component 700, thereby adjusting the light energy received by the first end 410 to achieve the adjustment of the light intensity in the dark room; and part of the sunlight exceeding the port of the optical fiber 400 continues to irradiate the photovoltaic panel 300, so that the photovoltaic panel 300 generates electricity and stores it in the power storage device 500, so as to provide lighting for the lighting component 600 at night or on cloudy days, thereby improving the utilization rate of the light source and reducing the occupied area, so as to facilitate use in places with smaller spaces.

[0053] In some embodiments, reference Figure 1 and Figure 3 , the distance from the photovoltaic panel 300 to the focusing layer 200 is greater than or equal to the focal length of the focusing layer 200 .

[0054] Exemplarily, the distance from the photovoltaic panel 300 to the light-collecting layer 200 is equal to the focal length of the light-collecting layer 200. The photovoltaic panel 300 and the first end 410 of the optical fiber 400 need to be kept on the focal plane of the light-collecting layer 200, that is, the first end 410 of the optical fiber 400 and the photovoltaic panel 300 are in the same plane, and the first end 410 of the optical fiber 400 is located at the focal position of the light-collecting layer 200, that is, at the center of the light spot formed by the light-collecting layer 200, that is, at the position with the strongest light intensity, so that the incident light intensity is as high as possible, and as much light energy as possible can be received to be transmitted to the dark room for lighting, thereby improving the ability of the optical fiber 400 system to transmit light energy.

[0055] Exemplarily, the distance from the photovoltaic panel 300 to the light-gathering layer 200 is greater than the focal length of the light-gathering layer 200. That is, the first end 410 of the optical fiber 400 is located on the focal plane of the light-gathering layer 200 and is protrudingly arranged above the photovoltaic panel 300, and the photovoltaic panel 300 is located below the first end 410 of the optical fiber 400, that is, below the focal plane of the light-gathering layer 200; the first end 410 is stripped of a certain length of plastic wrapping layer to form a bare section, and the section above the photovoltaic panel 300 is all bare; this not only enhances the temperature resistance of the optical fiber 400, but also increases the exposed area of ​​the incident port of the optical fiber 400, and receives more light energy; at the same time, after the photovoltaic panel 300 is located below the focal plane, the light energy density it receives is reduced, which protects the photovoltaic panel 300 and extends the service life of the photovoltaic panel 300.

[0056] In some embodiments, reference Figure 2 and Figure 4 The adjustment assembly 700 includes a rack 710, a gear 720 and a first driving member 730. The rack 710 is slidably disposed on the mounting frame 100 and is connected to the optical fiber 400 to drive the first end 410 to move. The gear 720 is rotatably disposed on the mounting frame 100 and meshes with the rack 710. The first driving member 730 is connected to the gear 720 to drive the gear 720 to rotate.

[0057] The portion of the optical fiber 400 at the bottom of the photovoltaic panel 300 has a certain amount of redundancy, which can provide a displacement amount for the optical fiber 400 to move.

[0058] Exemplarily, the rack 710 is fixedly connected to the optical fiber 400, and the rack 710 is located at the bottom of the photovoltaic panel 300 and close to the position of the first end 410, so as to drive the movement of the optical fiber 400, thereby adjusting the position of the first end 410 of the optical fiber 400 on the photovoltaic panel 300. In addition, the portion of the first end 410 of the optical fiber 400 that moves out of the photovoltaic panel 300 is an exposed section. When the optical fiber 400 moves, the exposed section is completely located in the hole of the photovoltaic panel 300 to achieve shielding of the optical fiber 400 and reduce the possibility of light leakage from the exposed section of the optical fiber 400. In addition, the rack 710 slides in a direction perpendicular to the photovoltaic panel 300, and the gear 720 is rotatably installed in the mounting frame 100. The gear 720 is meshed with the rack 710, and the gear 720 is driven to rotate by the first driving member 730, and the gear 720 drives the rack 710 to move, thereby achieving the adjustment of the position of the first end 410 of the optical fiber 400.

[0059] Furthermore, a slideway is provided in the mounting frame 100 , and the rack 710 is slidably connected in the slideway, so as to improve the stability of the sliding of the rack 710 .

[0060] For example, an electric push rod, a hydraulic rod, a cylinder, etc. can also be used to drive the optical fiber 400 to slide. Taking an electric push rod as an example, the electric push rod is installed on the mounting frame 100, and the piston rod of the electric push rod is connected to the optical fiber 400, so that the optical fiber 400 is driven to move by the electric push rod. In addition, the electric push rod can also be electrically connected to the power storage device 500, and the power storage device 500 is used to power the electric push rod, thereby reducing the use of external power.

[0061] When the distance between the photovoltaic panel 300 and the light-collecting layer 200 is greater than the focal length of the light-collecting layer 200, the height of the first end 410 of the optical fiber 400 will affect the light absorption effect of the optical fiber 400. The higher the height of the optical fiber 400, the more light energy the optical fiber 400 transmits, and the less light energy the photovoltaic panel 300 receives, until the first end 410 moves to the focal plane of the light-collecting layer 200, at which time the light energy transmitted by the optical fiber 400 reaches the maximum. By adjusting the position of the first end 410 of the optical fiber 400 through the adjustment component 700, the height of the first end 410 of the optical fiber 400 is adjusted, thereby adjusting the light energy absorption amount of the optical fiber 400, so that the position of the first end 410 of the optical fiber 400 can be adjusted according to the external light intensity and the required lighting brightness in the dark room.

[0062] For example, during the noon period when the light intensity is relatively high, the demand for light in the dark room is relatively low. By adjusting the assembly 700, the position of the first end 410 of the optical fiber 400 is lowered, so that most of the light focused by the light-gathering layer 200 is dispersed on the photovoltaic panel 300 after passing through the focal plane, so as to increase the amount of photovoltaic power generation. During the period when the light intensity is relatively low, by adjusting the assembly 700, the height of the first end 410 of the optical fiber 400 is increased, so that most of the light focused by the light-gathering layer 200 is irradiated on the end face of the first end 410, so as to increase the transmission of light energy by the optical fiber 400, so as to ensure the lighting effect in the dark room. When the external environment is not enough to illuminate the optical fiber 400, the lighting element 600 is powered by the power storage device 500, thereby realizing the nighttime lighting of the dark room. By combining the optical fiber 400 with photovoltaic power generation, the utilization efficiency of light energy is improved, the occupation of space is reduced, and it is more suitable for use in locations such as roofs where space is limited.

[0063] Furthermore, the height of the first end 410 can be adjusted according to weather conditions. When the weather light intensity is low, the height of the first end 410 is lowered while ensuring the current intensity of the optical fiber 400 lighting to increase the power generation of the photovoltaic panel 300 and ensure the lighting power at night.

[0064] The area of ​​the photovoltaic panel 300 is smaller than or equal to the area of ​​the light-collecting layer 200 , and larger than or equal to the area of ​​the light spot formed by the light-collecting layer 200 on the photovoltaic panel 300 .

[0065] Furthermore, the area of ​​the photovoltaic panel 300 is less than or equal to the area of ​​the light collecting layer 200 and greater than or equal to the area of ​​the light spot formed by the light collecting layer 200 on the photovoltaic panel 300. The photovoltaic panel 300 is only used to collect the part of light energy formed by the light collecting layer 200 that is larger than the range of the first end 410 of the optical fiber 400, so as to compensate for the light loss in the photovoltaic lighting system, and ensure that the light spot passing through the light collecting layer 200 is completely within the receiving range of the photovoltaic panel 300 while reducing the occupied area, so as to improve the utilization rate of the light source.

[0066] In some embodiments, the first driving member 730 includes a motor and a controller. The motor is disposed on the mounting bracket 100 and connected to the gear 720. The controller is disposed in the darkroom and electrically connected to the motor for controlling the motor.

[0067] Furthermore, the motor is electrically connected to the power storage device 500 so that the motor is powered by the power storage device 500 without using an additional power supply. The controller can be installed in a darkroom so that the operator can adjust the height of the optical fiber 400 according to the actual lighting requirements, thereby adjusting the brightness of the darkroom lighting, which is convenient and controllable.

[0068] In some embodiments, reference Figure 1 and Figure 3, the distance between the first end 410 and the photovoltaic panel 300 is r, , where f is the focal length of the light-gathering layer 200, is the distance between two opposite sides of the first cross section perpendicular to the thickness direction of the light-gathering layer 200. The first cross section is a plane formed by cutting the light-gathering layer 200 along the vertical direction, that is, the distance between two opposite sides of the cross section of the light-gathering layer 200 in the thickness direction; is the distance between the two opposite sides of the first cross section perpendicular to the thickness direction of the photovoltaic panel 300. At the same time, r should also satisfy ,Right now .

[0069] When the light-collecting layer 200 is circular, the photovoltaic panel 300 and the light-collecting layer 200 are adapted to be circular. The first section is any plane perpendicular to the diameter of the surface of the light-collecting layer 200. The first section cuts the light-collecting layer 200 and the photovoltaic panel 300 to form a rectangular section. is the distance between two opposite sides in the thickness direction of the cross section of the light-collecting layer 200, It is the distance between two opposite sides in the thickness direction of the cross section of the photovoltaic panel 300.

[0070] When the light-collecting layer 200 is rectangular or square, the photovoltaic panel 300 is rectangular or square matching the light-collecting layer 200. The first section is a plane perpendicular to the surface of the light-collecting layer 200 and arranged along the length or width direction of the rectangular surface of the light-collecting layer 200. The first section cuts the light-collecting layer 200 and the photovoltaic panel 300 to form a rectangular cross section. is the distance between two opposite sides in the thickness direction of the cross section of the light-collecting layer 200, It is the distance between two opposite sides in the thickness direction of the cross section of the photovoltaic panel 300.

[0071] By adjusting the distance r from the first end 410 to the photovoltaic panel 300 through the above-mentioned implementation, the first end 410 is always located below the focal length of the light-collecting layer 200 or the first end 410 is flush with the plane where the focal length of the light-collecting layer 200 is located, so as to actually determine the movable amount of the first end 410 according to the selected sizes of the light-collecting layer 200 and the photovoltaic panel 300.

[0072] In some embodiments, reference Figure 1 and Figure 3 , the distance from the focus of the light-collecting layer 200 to the first end 410 is L, ,in, , f is the focal length of the light-gathering layer 200, is the distance between two opposite sides of the first cross section perpendicular to the thickness direction of the light-focusing layer 200 , and D is the diameter of the optical fiber 400 .

[0073] Preferably, the distance from the focus of the light-collecting layer 200 to the first end 410 is L. Wherein, f is the focal length of the light-gathering layer 200, is the distance between the two opposite sides of the first cross section perpendicular to the thickness direction of the light-collecting layer 200, and D is the diameter of the optical fiber 400. That is, .

[0074] Through the above-mentioned implementation mode, the positional relationship between the first end 410 of the optical fiber 400 and the focusing layer 200 is determined to be within an appropriate range, so that the first end 410 of the optical fiber 400 is located below the focus of the focusing layer 200, and the diameter of the first end 410 is adapted to the corresponding parameters of the focusing layer 200, so that the aperture focused by the focusing layer 200 can be completely irradiated on the end of the first end 410 by raising the height of the first end 410, and the aperture focused by the focusing layer 200 can be partially fallen on the first end 410 and partially scattered on the photovoltaic panel 300 by lowering the height of the first end 410, so as to improve the utilization rate of light energy.

[0075] In some embodiments, reference Figure 1 and Figure 2 The mounting frame 100 includes a first mounting layer 110, a second mounting layer 120 and a third mounting layer 130 which are arranged in parallel in sequence. A mounting groove 111 is opened on the first mounting layer 110, the focusing layer 200 is arranged in the mounting groove 111, the photovoltaic panel 300 is arranged on the second mounting layer 120, the optical fiber 400 passes through the second mounting layer 120, and the adjustment component 700 is arranged in the third mounting layer 130.

[0076] The first mounting layer 110, the second mounting layer 120 and the third mounting layer 130 are parallel to each other, and the mounting frame 100 further includes connecting plates on both sides, which are respectively arranged on both sides of the first mounting layer 110, the second mounting layer 120 and the third mounting layer 130, and are respectively connected to the first mounting layer 110, the second mounting layer 120 and the third mounting layer 130 to achieve the fixation of the first mounting layer 110, the second mounting layer 120 and the third mounting layer 130. An opening is also provided in the mounting plate to reduce the weight of the mounting plate.

[0077] The mounting groove 111 is opened on the first mounting layer 110, and a mounting step is also arranged on the side of the mounting groove 111, that is, the mounting groove 111 is configured to first form a shallow square pit adapted to the light-gathering layer 200 on the outer surface of the first mounting layer 110, and then form a penetrating square hole smaller than the size of the light-gathering layer 200 at the lower end of the shallow square pit, and the shallow square pit and the square hole form a stepped structure, and the stepped structure is used to simply and effectively fix the light-gathering layer 200, and then the light-gathering layer 200 is fixed with screws.

[0078] The photovoltaic panel 300 is installed on the second installation layer 120. A first central hole 121 is provided in the middle of the second installation layer 120, which is located directly below the light-collecting layer 200. Four small holes are provided around the first central hole 121. The connection structure of the optical fiber 400 connector is fixed at the four small holes by bolts. A second central hole is provided in the middle of the photovoltaic panel 300. The first central hole 121 coincides with the second central hole in the middle of the photovoltaic panel 300. The first end 410 of the optical fiber 400 passes through the first central hole 121 and the second central hole and extends to the top of the photovoltaic panel 300. At the same time, two wiring holes are provided on the second installation layer 120, which are located on both sides of the first central hole 121 to facilitate the wiring of the photovoltaic panel 300. A hole is also provided at the bottom of the third installation layer 130 to facilitate the passage of the optical fiber 400.

[0079] The connection structure of the optical fiber 400 connector can be a clamp, which is connected to the part of the optical fiber 400 near the first end 410 through the clamp, and then fixed to the bottom of the second installation layer 120 to achieve preliminary fixation of the optical fiber 400. In addition, the clamp connection is located at a certain distance between the first end 410 of the optical fiber 400, and the optical fiber 400 is partially bent between the clamp and the second center hole to provide the movement of the optical fiber 400. The connection between the rack 710 and the optical fiber 400 is located between the clamp and the second installation layer 120. The rack 710 and the optical fiber 400 can be connected by bonding, snap connection, etc.

[0080] In some embodiments, reference Figure 1 , Figure 2 and Figure 5 The mounting frames 100 are arranged in plurality, and the plurality of mounting frames 100 are connected in parallel to form a whole, and the second ends 420 of the optical fibers 400 of the plurality of mounting frames 100 are all connected to the lighting element 600 to provide light energy for the lighting element 600.

[0081] The mounting racks 100 are arranged in multiple numbers and multiple mounting racks 100 are spliced ​​together in parallel to further increase the utilization of sunlight. The mounting racks 100 can be arranged in a single row or in multiple rows. After the mounting racks 100 are fixed together, only one solar tracker needs to be set.

[0082] For example, see Figure 3 There are six mounting frames 100, each of which is provided with a photovoltaic panel 300 and a focusing layer 200. Six optical fibers 400 are concentrated together and extended into a dark room, which can further increase the utilization of sunlight.

[0083] In some embodiments, a mounting base 800 is provided at the bottom of the mounting frame 100, and the mounting frame 100 is hinged on the mounting base 800. A second driving component for driving the mounting frame 100 to rotate is provided on the mounting base 800. A solar tracker is provided on the mounting frame 100, and the solar tracker is electrically connected to the second driving component to drive the mounting frame 100 to rotate following the sunlight.

[0084] The mounting base 800 is used to be installed on the roof or at a desired location, and the mounting frame 100 is hinged on the mounting base 800, so as to facilitate the adjustment of the position of the mounting frame 100. The second driving member can be a motor or a motor gear 720 structure. The second driving member drives the mounting frame 100 to rotate to adjust the angle of the mounting frame 100. The solar tracker includes a photoelectric detection part and a control part, wherein the photoelectric detection part is installed on the first mounting layer 110, and the control part is installed on the second mounting layer 120. The second driving member is electrically connected to the power storage device 500 to power the second driving member through the power storage device 500.

[0085] By setting the sun tracker, the mounting frame 100 can adjust the angle of the mounting frame 100 in real time according to the angle of the sun, so that the incident light of the sun is perpendicular to the light collecting layer 200. The plane where the light collecting layer 200 is located is perpendicular to the incident light of the sun, so as to maximize the light intensity absorbed by the lens range. Even if it is difficult for the plane where the light collecting layer 200 is located to be perpendicular to the incident light of the sun, it can ensure effective absorption of the sun's rays without affecting the use of the entire device.

[0086] Similarly, the mounting frame 100 may be directly mounted on the solar tracking system and rotate along with the solar tracking system to adjust the angle of the mounting frame 100 .

[0087] For example, when multiple mounting racks are used: the solar collector is placed in a region at longitude 121.52° and latitude 31.34°, and the size of a single concentrating layer 200 is , a total of 6 blocks are set. The lighting time is 12:00 noon, the daylight illumination condition is 110000lx (where lx is the unit of illumination, lux), and the luminous flux collected by the focusing layer 200 (the unit of luminous flux is lumen, abbreviated as lm) is:

[0088] ;

[0089] In the optical fiber transmission line, the optical fiber 400 collects and transmits a light flux of 5500 lm;

[0090] In the photovoltaic panel transmission line, the optical power collected by the photovoltaic panel 300 is:

[0091] ;

[0092] Among them, 100lm / W is the radiation efficiency of sunlight. In the photovoltaic panel transmission line, the energy conversion method is: light energy is converted into electrical energy, and then electrical energy is converted into light energy.

[0093] Since the efficiency of the photovoltaic panel transmission line is 90% and the photoelectric conversion efficiency is 30%, the photovoltaic panel 300 finally converts the electrical energy into:

[0094] ;

[0095] Convert all electrical energy into light energy again, and the resulting luminous flux is:

[0096] ;

[0097] Among them, 150lm / W is the luminous efficiency of the LED light source used in photovoltaic lighting. The total luminous flux output at the end of the optical fiber transmission line and the photovoltaic panel transmission line is:

[0098] ;

[0099] The total light utilization rate of the entire device is:

[0100] .

[0101] Furthermore, since the light collecting layer-photovoltaic panel unit on each mounting frame 100 is relatively independently integrated into one, the light flux collected on a single mounting frame is: , the total luminous flux output at the end of the single-channel optical fiber transmission line and the photovoltaic panel transmission line is , and then through the above steps to calculate, it can be concluded that the light utilization rate is still 52.89%.

[0102] For example, when a single mounting bracket 100 output terminal is connected to one lighting device:

[0103] The size of the light-collecting layer 200 is , focal length is 105mm;

[0104] The optical fiber 400 is a quartz optical fiber with a diameter of 1.8 mm; the photovoltaic panel 300 is a Class A polycrystalline silicon solar glue panel with a power of 0.5 W, a working current of 0-66 mA, a working voltage of 6 V, and a diameter of 80 mm; the power storage device 500 is a lithium battery 3.7 V 4400 / 8800 mAh;

[0105] The solar tracker is a solar tracking system based on a four-quadrant photoelectric detector, model TYTC-201M0, size ;

[0106] Mounting base 800 dimensions are , the plate thickness is 6mm; the size of the mounting groove 111 for fixing the focusing layer 200: the size of the upper shallow square pit is , 3mm deep, and allow 0.5mm mechanical error, the size of the lower square hole is ; Since the focal length of the focusing layer 200 is 105mm, the distance between the middle layer and the upper layer is 115mm.

[0107] The optical fiber 400 and the lighting element 600 are connected together to form a lighting device, and a light-sensing switch is provided on the photovoltaic lighting circuit. When the light is insufficient on rainy days or at night, the light-sensing switch senses that the sunlight intensity is lower than a certain value and closes its built-in switch to connect the lithium battery with the 36W LED light source, and the lighting device is provided with light output by the LED; when the light is sufficient on sunny days, the light-sensitive switch senses that the sunlight intensity is higher than a certain value and opens its built-in switch to disconnect the lithium battery from the lighting device, and the lighting device is provided with light output by the optical fiber 400, while the photovoltaic panel 300 charges the lithium battery.

[0108] Exemplarily, when the output terminal of the mounting frame 100 is connected to two lighting devices: in the optical fiber system, the second end 420 of the optical fiber 400 is connected to the lighting device; in the photovoltaic lighting system, the other end of the lithium battery is connected to the lighting component 600, and the light source of the lighting component 600 is a 36W LED; on sunny days, the lighting device is used for lighting, and on rainy days, nights and other times when there is insufficient light, the lighting component 600 is used for lighting.

[0109] In order to verify the above effect, the device and the following comparative examples 1 and 2 were placed in a region of longitude 121.52° and latitude 31.34° under the same lighting conditions and on the same day, with the lighting time being 12:00 noon and the daylight illumination condition being 110000 lx, for experimental testing.

[0110] Among them, comparative example 1 is: only the light-collecting layer 200 and the optical fiber 400 are provided, and the photovoltaic panel 300 is cancelled, that is, the light loss in the optical fiber transmission lighting line is no longer utilized.

[0111] The light flux collected by the light-collecting layer 200 is 4400 lm, and the light flux collected and transmitted by the optical fiber 400 is 916.7 lm. At this time, the daylight utilization rate is 20.83%.

[0112] Comparative Example 2 is as follows: a light-gathering layer 200 and an optical fiber 400 are provided. In order to make the light flux obtained by the terminal equal to that of the present device, i.e., 2300 lm, the photovoltaic panel is installed on the side of the entire device as in the prior art. In this case, the size of the photovoltaic panel needs to be set to at least 1 , resulting in the overall floor area to reach , which occupies an area more than 1 times that of this device.

[0113] Table 1 is a data comparison table of solar collector and comparative example

[0114]

[0115] From the comparison in the above table, it can be concluded that the solar concentrator provided in the embodiment of the present application improves the utilization rate of light and reduces the floor space, thereby facilitating installation and use in places with limited locations.

[0116] The present application provides a solar concentrator, which sets a photovoltaic panel 300 below a focusing layer 200. The first end 410 of the optical fiber 400 directly passes through the photovoltaic panel 300 and extends between the photovoltaic panel 300 and the focusing layer 200, and is located at the focus of the focusing layer 200 to receive sunlight and transmit the sunlight to the second end 420 located in a dark room to achieve lighting of the dark room; the distance between the first end 410 of the optical fiber 400 and the photovoltaic panel 300 is adjusted by adjusting the component 700, thereby adjusting the light energy received by the first end 410 to achieve the adjustment of the light intensity in the dark room; and part of the sunlight exceeding the port of the optical fiber 400 continues to irradiate the photovoltaic panel 300, so that the photovoltaic panel 300 generates electricity and stores it in the power storage device 500, so as to provide lighting for the lighting component 600 at night or on cloudy days, thereby improving the utilization rate of the light source and reducing the occupied area, so as to facilitate use in places with smaller spaces.

[0117] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application. The present application is intended to cover any modification, use or adaptation of the present application, which follows the general principles of the present application and includes common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only, and the true scope and spirit of the present application are indicated by the following claims.

[0118] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A solar concentrator, characterized in that: include A light-concentrating layer (200) for focusing sunlight; A photovoltaic panel (300) is located below the light-collecting layer (200) and is electrically connected to a power storage device (500); An optical fiber (400) having a first end (410) and a second end (420) arranged opposite to each other, wherein the first end (410) is slidably arranged on the photovoltaic panel (300) and extends to the focus of the light-concentrating layer (200) to receive sunlight; an adjustment component (700), connected to the optical fiber (400), and used for adjusting the distance between the first end (410) and the photovoltaic panel (300); An illuminating element (600) is arranged in a dark room and is used to provide illumination for the dark room; The lighting component (600) is connected to the power storage device (500) or the second end (420); when the lighting component (600) is connected to the power storage device (500), the power storage device (500) provides electrical energy to the lighting component (600); when the lighting component (600) is connected to the second end (420), the optical fiber (400) provides light energy to the lighting component (600); The invention also includes a mounting frame (100), wherein the focusing layer (200) and the photovoltaic panel (300) are both arranged on the mounting frame (100), and the adjustment component (700) includes a rack (710), a gear (720) and a first driving member (730), wherein the rack (710) is slidably arranged on the mounting frame (100) and is connected to the optical fiber (400) to drive the first end (410) to move, and the gear (720) is rotatably arranged on the mounting frame (100) and meshes with the rack (710), and the first driving member (730) is connected to the gear (720) to drive the gear (720) to rotate.

2. The solar concentrator according to claim 1, characterized in that: The first driving member (730) comprises a motor and a controller. The motor is arranged on the mounting frame (100) and connected to the gear (720). The controller is arranged in the darkroom and electrically connected to the motor for controlling the motor.

3. The solar concentrator according to claim 1, characterized in that: The area of ​​the photovoltaic panel (300) is smaller than or equal to the area of ​​the light-collecting layer (200), and larger than or equal to the area of ​​a light spot formed by the light-collecting layer (200) on the photovoltaic panel (300).

4. The solar concentrator according to claim 1, characterized in that: The distance between the photovoltaic panel (300) and the light-collecting layer (200) is greater than or equal to the focal length of the light-collecting layer (200).

5. The solar concentrator according to claim 1, characterized in that: The distance between the first end (410) and the photovoltaic panel (300) is r, , wherein f is the focal length of the light-gathering layer (200), is the distance between two opposite sides of a first cross section perpendicular to the thickness direction of the light-gathering layer (200), wherein the first cross section is a surface formed by cutting the light-gathering layer (200) along a vertical direction, It is the distance between two opposite sides of the first cross section perpendicular to the thickness direction of the photovoltaic panel (300).

6. The solar concentrator according to claim 5, characterized in that: The distance from the focus of the light-collecting layer (200) to the first end (410) is L, ,in, , f is the focal length of the light-focusing layer (200), and D is the diameter of the optical fiber (400).

7. The solar concentrator according to claim 6, characterized in that: The distance from the focus of the light-collecting layer (200) to the first end (410) is L, .

8. The solar concentrator according to any one of claims 1 to 7, characterized in that: The mounting frame (100) comprises a first mounting layer (110), a second mounting layer (120) and a third mounting layer (130) which are arranged in parallel in sequence; a mounting groove (111) is provided on the first mounting layer (110); the light-collecting layer (200) is arranged in the mounting groove (111); the photovoltaic panel (300) is arranged on the second mounting layer (120); the optical fiber (400) passes through the second mounting layer (120); and the adjustment component (700) is arranged in the third mounting layer (130).

9. The solar concentrator according to any one of claims 1 to 7, characterized in that: The mounting frames (100) are arranged in plurality, and the plurality of mounting frames (100) are connected in parallel to form a whole, and the second ends (420) of the optical fibers (400) of the plurality of mounting frames (100) are all connected to the lighting element (600) to provide light energy for the lighting element (600).

10. The solar concentrator according to any one of claims 1 to 7, characterized in that: A mounting base (800) is provided at the bottom of the mounting frame (100), the mounting frame (100) is hinged on the mounting base (800), a second driving member for driving the mounting frame (100) to rotate is provided on the mounting base (800), and a solar tracker is provided on the mounting frame (100), the solar tracker is electrically connected to the second driving member to drive the mounting frame (100) to rotate following sunlight.

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