Sunlight tracking type solar cell panel and automatic alignment device thereof

Abstract

The utility model provides an automatic alignment device of a sunlight tracking type solar cell panel, which comprises an optical sensor device and a shielding cover, the shielding cover is arranged above the optical sensor device and is fixedly connected with the optical sensor device, and the optical sensor device comprises a bottom plate and a photodiode array arranged on the bottom plate. The shielding cover is parallel to the bottom plate and is fixedly connected with the bottom plate, the shielding cover is provided with a central hole, and the central hole limits irradiation of sunlight to a photodiode array of the optical sensor device. The sunlight tracking type solar cell panel provided by the utility model can follow the angle change of sunlight in real time through the automatic alignment device and the circuit system, and always keep an optimal illumination receiving state.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of solar energy technology, in particular to a sunlight tracking type solar cell panel and an automatic alignment device thereof. BACKGROUND

[0002] Energy is the pillar of human society to survive and develop, with the continuous expansion of the economic scale, the demand for energy is increasing, the consumption of traditional energy is rising sharply, and energy crisis has become a huge challenge facing the world today. As a new renewable energy, solar energy is very abundant, and its advantage of inexhaustible makes it more and more adopted by countries. Solar energy utilization is the most sustainable development ideal renewable energy technology, but the sun moves with time, so the solar device is generally best oriented perpendicular to the panel, and the efficient use of solar energy is the core problem to be solved. Because the position of the sun changes constantly, the receiving surface must be oriented to the best position.

[0003] CN 205299367 U discloses a street lamp, a sunlight tracking device includes a controller, a drive motor, a turntable, a rotating shaft, a stand, the stand is fixed on the upper surface of the support plate, the surface of the stand is fixed with a plurality of light sensors for detecting light intensity, the plurality of light sensors are arranged along the circumferential direction of the stand and face different directions, the plurality of light sensors are respectively connected with the controller signal, the lower end of the rotating shaft is fixed on the support plate through the bearing, the turntable is sleeved on the rotating shaft and is fixedly connected with the rotating shaft, the solar cell panel is fixed on the upper end of the rotating shaft, the drive motor is used for driving the turntable to rotate, when the street lamp is used, the light intensity value detected by the light sensor is transmitted to the controller, the controller compares the plurality of light intensity values received, determines the direction of the light intensity value of the light sensor, and then controls the drive motor to rotate the turntable so that the direction of the solar cell panel is always consistent with the direction of the light sensor with the maximum light intensity value. The prior art discloses that the light intensity values monitored by the plurality of circumferentially arranged light sensors are compared to control the direction of the solar cell panel to always be consistent with the direction of the light sensor with the maximum light intensity value. However, the prior art has the possibility of detection error.

[0004] Therefore, there is room for improvement in the accuracy of light direction and angle detection for automatic alignment of the solar cell panel. CONTENT OF THE UTILITY MODEL

[0005] One of the technical problems to be solved by the present disclosure is that there is a deficiency in the accuracy of light direction and angle detection for automatic alignment of the solar cell panel, which makes it difficult to ensure the efficient use of solar energy.

[0006] To solve the above technical problems, the present disclosure provides an automatic alignment device for a sunlight tracking solar panel, comprising:

[0007] an optical sensor device, the optical sensor device comprising a base plate and a photodiode array arranged on the base plate;

[0008] a shielding cover arranged above the optical sensor device and fixedly connected with the optical sensor device;

[0009] the shielding cover is parallel to the base plate and fixedly connected with the base plate, the shielding cover has a central opening which limits the irradiation of sunlight on the photodiode array of the optical sensor device.

[0010] In some embodiments, the photodiode array comprises a first photodiode and a plurality of second photodiodes arranged around the first photodiode, wherein the plurality of second photodiodes arranged around the first photodiode are arranged on the same circle with the center of the first photodiode as the center and the distance between every two adjacent second photodiodes is equal.

[0011] In some embodiments, the first photodiode and the second photodiode are the same photodiode.

[0012] In some embodiments, the shielding cover is fixedly connected with the base plate through a first support.

[0013] In some embodiments, the first support is a plurality of pillars, the plurality of pillars are arranged at the periphery of the base plate away from the center of the base plate, the top of the pillar is fixedly connected with the bottom surface of the shielding cover, and the bottom of the pillar is fixedly connected with the surface of the base plate.

[0014] In some embodiments, the central opening is circular in shape, the central opening is arranged centrally on the shielding cover, and the center of the central opening is aligned with the center of the base plate.

[0015] In some embodiments, the shielding cover is circular ring in shape, the central opening is arranged centrally on the shielding cover, the shielding cover is located above the photodiode array, the center of the central opening is aligned with the center of the first photodiode of the photodiode array, the second photodiode is located on the circle with the center of the first photodiode as the center, and the end of the second photodiode close to the center of the first photodiode has a first distance from the circle with the center of the first photodiode as the center and the radius equal to the radius of the central opening.

[0016] In some embodiments, the shielding cover and the photodiode array have a second distance, the second distance is set to a distance that can effectively block stray light and will not hinder the transmission of normal light.

[0017] In some embodiments, the surface of the cover facing away from the photodiode array is coated with an anti-reflective coating.

[0018] The automatic alignment device of the sunlight tracking solar cell panel according to the present disclosure comprises a cover and a bottom plate, the cover and the bottom plate are parallel to the solar cell panel, and the cover is provided with a plurality of first photodiodes and a plurality of second photodiodes.

[0019] The automatic alignment device of the sunlight tracking solar cell panel according to the present disclosure, by combining the optical sensor device with the cover, makes the optical sensor device receive sunlight related to the direction of the sunlight, so that the optical sensor device accurately obtains the direction and angle of the light deflection, solves the technical problem that the light direction and angle detection accuracy for the automatic alignment of the solar cell panel is insufficient to ensure the efficient use of solar energy. The sunlight tracking solar cell panel can follow the angle change of the sunlight in real time through the automatic alignment device and the circuit system, and always maintain the best light receiving state, thereby effectively improving the energy conversion efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure or the prior art, brief descriptions will be given below for the drawings needed to be used in the embodiments or prior art descriptions. Obviously, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0021] Figure 1 is a schematic diagram of the automatic alignment device of the sunlight tracking solar cell panel disclosed by the present disclosure.

[0022] MARKED DESCRIPTION:

[0023] 1, solar cell panel; 2, bottom plate; 3, first photodiode; 4, center hole; 5, second photodiode. DETAILED DESCRIPTION

[0024] The embodiments of the present disclosure will be further described in detail below in combination with the drawings and examples. The detailed description of the following embodiments and the drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure, and the present disclosure can be implemented in many different forms, not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

[0025] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that: unless otherwise specified, the relative arrangement of components and steps, the components of materials, numerical expressions and numerical values set forth in these embodiments should be interpreted as merely exemplary, not as a limitation.

[0026] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "a plurality of" is greater than or equal to two; The orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer" and the like is only for the purpose of facilitating the description of the present disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation to the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] In addition, "first", "second", and similar words used in the present disclosure do not indicate any order, number or importance, but are only used to distinguish different parts. "Vertical" is not strictly vertical, but within the allowable range of error. "Parallel" is not strictly parallel, but within the allowable range of error. "Include" or "contain" and similar words mean that the elements before the word cover the elements listed after the word, and do not exclude the possibility of also covering other elements.

[0028] It should also be noted that, in the description of the present disclosure, unless otherwise specifically specified and limited, the terms "mount", "connect", "connect" should be understood broadly, for example, it can be a fixed connection, or it can be a detachable connection, or an integral connection; It can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. When it is described that a specific device is located between the first device and the second device, there can be an intermediate device between the specific device and the first device or the second device, or there can be no intermediate device.

[0029] All terms used in the present disclosure have the same meaning as understood by those skilled in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted to have meanings consistent with their meanings in the context of the relevant art, and should not be interpreted in an idealized or excessively formalized sense, unless specifically defined here.

[0030] Techniques, methods and equipment known to those skilled in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the specification.

[0031] As Figure 1 shown, the present disclosure provides an automatic alignment device for a sunlight tracking solar panel, which comprises an optical sensor device and a shielding cover, the shielding cover is arranged above the optical sensor device and is fixedly connected with the optical sensor device, the optical sensor device comprises a bottom plate 2 and a photodiode array arranged on the bottom plate 2, the shielding cover is parallel to the bottom plate 2 and is fixedly connected with the bottom plate 2, the shielding cover has a central opening 4, and the central opening 4 limits the irradiation of sunlight on the photodiode array of the optical sensor device. Figure 1 In order to show the optical sensor device, only the central opening 4 of the shielding cover is shown and the rest of the shielding cover is omitted.

[0032] Compared with the prior art, the automatic alignment device for the sunlight tracking solar panel of the present disclosure combines the optical sensor device with the shielding cover, so that the optical sensor device receives sunlight related to the direction of the sunlight, so that the optical sensor device accurately obtains the direction and angle of the light deflection, and solves the technical problem that the detection accuracy of the light direction and angle on which the automatic alignment of the solar panel 1 is based is insufficient to ensure the efficient use of solar energy.

[0033] In some embodiments, the photodiode array comprises a first photodiode 3 and a plurality of second photodiodes 5 arranged around the first photodiode 3, wherein the plurality of second photodiodes 5 arranged around the first photodiode 3 are arranged on the same circle with the center of the first photodiode 3 as the center and the spacing between every two adjacent second photodiodes 5 is equal. This design ensures the symmetry of the photodiode array.

[0034] In some embodiments, the photodiode array comprises a first photodiode 3 and four second photodiodes 5 arranged around the first photodiode 3, wherein the four second photodiodes 5 arranged around the first photodiode 3 are arranged on the same circle with the center of the first photodiode 3 as the center and the spacing between every two adjacent second photodiodes 5 is equal. That is, the four second photodiodes 5 are respectively located at the four corners of a square, and the center of the first photodiode 3 is located at the center of symmetry of the square. This design ensures the symmetry of the photodiode array.

[0035] In some embodiments, the first photodiode 3 and the second photodiode 5 of the photodiode array adopt the same high-sensitivity photodiode, which has excellent light sensing capability and can quickly and accurately capture subtle changes in light intensity. The performance and parameters of the first photodiode 3 and the second photodiode 5 remain consistent, ensuring that the photodiode array has high consistency and reliability in light detection. This design ensures accurate perception of weak light changes by the first photodiode 3 and the second photodiode 5.

[0036] In some embodiments, the bottom plate 2 is a flat plate, the first photodiode 3 is arranged at the center of the bottom plate 2, and the center of the first photodiode 3 is aligned with the center of the bottom plate 2. The second photodiode 5 is arranged on the bottom plate 2 in a manner that is equidistant from the first photodiode 3, and the spacing between every two adjacent second photodiodes 5 is equal.

[0037] In some embodiments, the shielding cover is fixedly connected with the bottom plate 2 by a first support (not shown), so that the shielding cover is fixedly connected with the photosensitive sensor device.

[0038] In some embodiments, the first support is a plurality of pillars, which are arranged at the periphery of the bottom plate 2 away from the center of the bottom plate 2. The top of the pillar is fixedly connected with the bottom surface of the shielding cover, and the bottom of the pillar is fixedly connected with the surface of the bottom plate 2, thereby fixedly connecting the shielding cover with the bottom plate 2. This design ensures that the pillars do not affect the illumination of the second photodiode 5 by sunlight.

[0039] In some embodiments, the first support is a double-headed screw, and a screw hole is provided on the periphery of the bottom plate 2 and the periphery of the shielding cover, respectively. The shielding cover is fixedly connected with the bottom plate 2 by engaging the double-headed screw with the corresponding screw holes on the bottom plate 2 and the shielding cover, respectively.

[0040] In some embodiments, the shielding cover and the bottom plate 2 are integrally formed, and a wall is provided on the periphery of the shielding cover and the bottom plate 2. The shielding cover and the bottom plate 2 are fixedly connected by the wall.

[0041] In some embodiments, the central opening 4 is circular in shape, and the central opening 4 is arranged centrally on the shielding cover, with the center of the central opening 4 aligned with the center of the bottom plate 2. This design ensures that the sunlight vertically irradiating onto the bottom plate 2 through the central opening 4 is located within a circular region centered on the center of the bottom plate 2.

[0042] In some embodiments, the center of the central opening 4 is aligned with the center of the first photodiode 3 of the photodiode array on the bottom plate 2.

[0043] In some embodiments, the shielding cover is in a circular ring shape, the central opening 4 is centrally arranged on the shielding cover, the shielding cover is located above the photodiode array, and the center of the central opening 4 is aligned with the center of the first photodiode 3 of the photodiode array. The second photodiode 5 is located on a circle with the center of the first photodiode 3 as the center, and the end of the second photodiode 5 close to the center of the first photodiode 3 has a first distance from the circle with the center of the first photodiode 3 as the center and the radius of the central opening 4. The shielding cover blocks the second photodiode 5 around the first photodiode 3 from the direction perpendicular to the shielding cover, that is, the shielding cover completely hides the second photodiode 5 around the first photodiode 3 from the direction perpendicular to the bottom plate 2 and the shielding cover. This design ensures that when the sunlight is perpendicular to the automatic alignment device of the sunlight tracking solar panel, the light passes through the central opening 4 to irradiate the first photodiode 3 of the photodiode array, but cannot irradiate the second photodiode 5 around the first photodiode 3; when the sunlight is oblique to the automatic alignment device of the sunlight tracking solar panel, the light passes through the central opening 4 to irradiate one or more of the first photodiode 3 and the second photodiode 5 around the first photodiode 3.

[0044] In some embodiments, the shielding cover has a second distance from the photodiode array, that is, the bottom surface of the shielding cover has a second distance from the top of the first photodiode 3 and the top of the second photodiode 5. The second distance is set to a distance that can effectively block stray light and will not hinder the transmission of normal light. This design ensures that the shielding cover effectively shields the photodiode array.

[0045] In some embodiments, the bottom plate 2 of the optical sensor device is in a circular shape, the shielding cover is in a circular ring shape, the center of the shielding cover is aligned with the center of the bottom plate 2, and the outer circle of the shielding cover has the same circumference as the circumference of the bottom plate 2. That is, from the direction perpendicular to the shielding cover, the periphery of the shielding cover coincides with the periphery of the bottom plate 2, so the periphery of the bottom plate 2 is not visible. This design ensures that when the sunlight is perpendicular to the automatic alignment device of the sunlight tracking solar panel, the light passes through the central opening 4 to irradiate the first photodiode 3 of the photodiode array.

[0046] In some embodiments, the shielding cover is made of a material that is resistant to high temperature, ultraviolet light, and has good light shielding performance. This design ensures that sunlight cannot pass through the shielding cover.

[0047] In some embodiments, the center hole 4 is carefully designed and precisely machined, in which the diameter of the center hole 4 is controlled to ensure that only the vertically incident sunlight can accurately and concentratedly irradiate the circular area on the bottom plate 2 corresponding to the center of the bottom plate 2, thereby avoiding the interference of the surrounding scattered light or deflected light.

[0048] In some embodiments, the surface of the shielding cover away from the photodiode array is coated with an anti-reflection coating, that is, the opposite surface of the surface of the shielding cover facing the photodiode array is coated with an anti-reflection coating. The anti-reflection coating further reduces the reflection and scattering of light, and improves the transmittance and utilization efficiency of light.

[0049] The working principle of the automatic alignment device of the solar light tracking solar panel of the present disclosure is as follows: when the sunlight is vertically incident on the automatic alignment device of the solar light tracking solar panel, the light is irradiated to the first photodiode 3 of the photodiode array through the center hole 4, and cannot be irradiated to the second photodiode 5 surrounding the first photodiode 3, in which case only the first photodiode 3 is excited and generates a corresponding electrical signal; when the sunlight is obliquely incident on the automatic alignment device of the solar light tracking solar panel, the light is irradiated to one or more of the first photodiode 3 and the second photodiode 5 surrounding the first photodiode 3 through the center hole 4, in which case the first photodiode 3 and the second photodiode 5 irradiated are excited and generate corresponding electrical signals, respectively. Here, the vertically incident sunlight on the automatic alignment device of the solar light tracking solar panel refers to the vertically incident sunlight on the shielding cover and the bottom plate 2.

[0050] The present disclosure provides a solar light tracking solar panel, which comprises an automatic alignment device of the solar light tracking solar panel (referred to as an automatic alignment device), a solar panel 1 and a circuit system. The automatic alignment device is arranged above the solar panel 1 and is fixedly connected with the solar panel 1, wherein the shielding cover and the bottom plate 2 of the automatic alignment device are respectively parallel to the solar panel 1, and the circuit system is connected with the automatic alignment device and the solar panel 1, respectively.

[0051] In some embodiments, the bottom plate 2 is fixedly connected with the solar panel 1 by a second support (not shown). The top of the second support is fixedly connected with the bottom surface of the bottom plate 2, and the bottom of the second support is fixedly connected with the upper surface of the solar panel 1. The upper surface of the solar panel 1 is the surface of the solar panel 1 facing the bottom plate 2, and is also the surface of the solar panel 1 facing the sunlight.

[0052] The circuit system of the utility model can adopt the structure of the prior art that rotates the solar cell panel 1 through receiving signals to control, and the following embodiments select a circuit system for description. In the embodiment, the circuit system comprises a signal processing module, a drive control module and a mechanical circuit, the signal processing module is respectively connected with the optical sensor device and the drive control module, the drive control module is connected with the mechanical circuit, and the mechanical circuit is fixedly connected with the solar cell panel 1. The signal processing module is configured to receive the electrical signals of the optical sensor device, generate processed signals by judging the direction and angle of the inclined light irradiation and transmit the processed signals to the drive control module, the drive control module is configured to receive the processed signals and control the mechanical circuit to adjust the solar cell panel 1 to be perpendicular to the sunlight according to the processed signals, so as to control the shading cover and the bottom plate 2 to be perpendicular to the sunlight.

[0053] In the above embodiment, the signal processing module is connected with the first photodiode 3 and the second photodiode 5 of the photodiode array of the optical sensor device, and receives the electrical signals of the first photodiode 3 and the second photodiode 5. The mechanical circuit can comprise a motor and a transmission mechanism, the drive control module is connected with the motor, the motor is connected with the transmission mechanism and controls the rotation of the transmission mechanism, the transmission mechanism is fixedly connected with the solar cell panel 1 and the transmission mechanism is configured to adjust the angle of the bottom plate 2 by adjusting the angle of the solar cell panel 1, and further adjust the angle of the shading cover. The design can realize the fine and rapid adjustment of the angle of the solar cell panel 1.

[0054] The working of the sunlight tracking solar panel of the present disclosure is as follows: when the sunlight is perpendicular to the automatic alignment device of the sunlight tracking solar panel, the light passes through the central opening 4 and irradiates the first photodiode 3 of the photodiode array, but cannot irradiate the second photodiode 5 surrounding the first photodiode 3, in this case only the first photodiode 3 is excited and generates a corresponding electrical signal, the signal processing module of the circuit system receives the electrical signal of the first photodiode 3 and judges that the sunlight is direct, the signal processing module can generate a processed signal corresponding to no adjustment and transmit the processed signal corresponding to no adjustment to the drive control module, the drive control module does not control the mechanical circuit to adjust the angle of the solar panel 1, the solar panel 1 remains stationary, or the signal processing module can not generate a processed signal, the drive control module and the mechanical circuit are in normal standby state, and the solar panel 1 remains stationary; when the sunlight is oblique to the automatic alignment device of the sunlight tracking solar panel, the light passes through the central opening 4 and irradiates one or more of the first photodiode 3 and the second photodiode 5 surrounding the first photodiode 3, in this case the first photodiode 3 and the irradiated second photodiode 5 are excited and generate corresponding electrical signals respectively, the signal processing module receives the electrical signals of the first photodiode 3 and the irradiated second photodiode 5 and generates a processed signal corresponding to adjustment according to the combination and intensity of the received electrical signals and transmits the processed signal corresponding to adjustment to the drive control module, the drive control module receives the processed signal corresponding to adjustment and controls the mechanical circuit to adjust the angle of the solar panel 1 according to the processed signal corresponding to adjustment, so that the solar panel 1 is perpendicular to the sunlight, so that the sunlight is perpendicular to the automatic alignment device of the sunlight tracking solar panel, realizing the tracking of the sunlight and the automatic alignment of the angle of the solar panel 1.

[0055] The sunlight tracking solar panel of the present disclosure is installed to ensure that the solar panel 1 is parallel to the shielding cover and the bottom plate 2 of the automatic alignment device, and the levelness and stability of the solar panel 1 and the automatic alignment device are ensured during installation, to ensure the accuracy of detection and tracking.

[0056] The sunlight tracking solar cell panel of the present disclosure can track the angle change of sunlight in real time through the automatic alignment device and circuit system, always maintain the best light receiving state, thereby effectively improving the energy conversion efficiency. Due to the design of the photodiode array of the photoelectric sensor device of the automatic alignment device and the shielding cover, the photodiode array is not affected by stray light and can accurately receive sunlight, thereby improving the accuracy of sunlight detection and tracking, achieving precise tracking of the sunlight by the solar cell panel 1, thereby improving the conversion efficiency, overcoming the technical problem that the accuracy of the automatic alignment of the existing solar cell panel 1 is insufficient to ensure the efficient use of solar energy.

[0057] The sunlight tracking solar cell panel and the automatic alignment device thereof of the present disclosure have the advantages of simple structure, high tracking precision, improved conversion efficiency, etc., and have wide application prospects and practical value.

[0058] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0059] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way.

Claims

1. An automatic alignment device for a sun-tracking solar panel, characterized in that, The application relates to a light sensor device, comprising: a light sensor device comprising a base plate (2) and a photodiode array arranged on the base plate (2); a shielding cover arranged above the light sensor device and fixedly connected with the light sensor device; the shielding cover is parallel to the base plate (2) and fixedly connected with the base plate (2), and the shielding cover has a central opening (4) which limits the irradiation of sunlight on the photodiode array of the light sensor device.

2. The automatic alignment device of a sunlight tracking solar panel according to claim 1, characterized in that, the photodiode array comprises a first photodiode (3) and a plurality of second photodiodes (5) arranged around the first photodiode (3), wherein the plurality of second photodiodes (5) arranged around the first photodiode (3) are arranged on the same circle with the center of the first photodiode (3) as the center and the distance between every two adjacent second photodiodes (5) is equal.

3. The automatic alignment device for a solar tracking solar panel according to claim 2, characterized in that, the first photodiode (3) and the second photodiode (5) are the same photodiode.

4. The automatic alignment device for a solar tracking solar panel according to claim 1, characterized in that, the shielding cover is fixedly connected with the base plate (2) through a first support.

5. The automatic alignment device for a solar tracking solar panel according to claim 4, characterized in that, the first support is a plurality of pillars, the plurality of pillars are arranged on the periphery of the base plate (2) away from the center of the base plate (2), the top of the pillar is fixedly connected with the bottom surface of the shielding cover, and the bottom of the pillar is fixedly connected with the surface of the base plate (2).

6. The automatic alignment device for a solar tracking solar panel according to claim 1, wherein the central opening (4) is circular in shape, the central opening (4) is arranged centrally on the shielding cover, and the center of the central opening (4) is aligned with the center of the base plate (2).

7. The automatic alignment device for a solar tracking solar panel according to claim 2, wherein the shielding cover is circular in shape, the central opening (4) is arranged centrally on the shielding cover, the shielding cover is located above the photodiode array, the center of the central opening (4) is aligned with the center of the first photodiode (3) of the photodiode array, the second photodiode (5) is located on the circle with the center of the first photodiode (3) as the center, and the end of the second photodiode (5) close to the center of the first photodiode (3) has a first distance from the circle with the center of the first photodiode (3) as the center and a radius equal to the radius of the central opening (4).

8. The automatic alignment device for a solar tracking solar panel according to claim 1, wherein, the shielding cover and the photodiode array have a second distance, and the second distance is set to be a distance capable of effectively blocking stray light and not hindering normal light transmission.

9. The automatic alignment device of a sunlight tracking solar panel according to claim 1, characterized in that, the surface of the shielding cover away from the photodiode array is coated with an anti-reflection coating.

10. A sun-tracking solar panel, characterized in that, The automatic alignment device of the sunlight tracking type solar panel, the solar panel (1) and the circuit system according to any one of claims 1-9, the automatic alignment device of the sunlight tracking type solar panel is arranged above the solar panel (1) and is fixedly connected with the solar panel (1), wherein the shielding cover and the bottom plate (2) are respectively parallel to the solar panel (1), and the circuit system is connected with the automatic alignment device of the sunlight tracking type solar panel and the solar panel (1) respectively.

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