Multi-angle spectral response testing device and system for photovoltaic module

Abstract

This application relates to a multi-angle spectral response testing device and system for photovoltaic modules. The multi-angle spectral response testing device for photovoltaic modules includes: a base, a protractor, a telescopic component, a rotating stage, and a photodetector. In actual use, the photodetector continuously monitors the operating conditions of the light source (such as solar orbit movement, seasonal changes, or installation tilt adjustments). The telescopic component moves up and down according to the operating conditions of the light source detected by the photodetector, thereby moving the photovoltaic module on the rotating stage to a specific angle. This allows for testing the spectral response of the photovoltaic module under multi-angle incident light, enabling quantitative evaluation of the spectral response characteristic shift and energy conversion efficiency attenuation caused by dynamic changes in the solar altitude angle in actual working scenarios. This ensures that laboratory data remains consistent with performance indicators under real outdoor conditions.

Description

Technical Field

[0001] This application relates to the field of photovoltaic technology, and in particular to a multi-angle spectral response testing device and system for photovoltaic modules. Background Technology

[0002] Traditional spectral response testing primarily relies on monochromatic light measurements under perpendicular incidence conditions, employing monochromators, photodetectors, and signal processing systems to analyze the wavelength-photocurrent relationship. This technique is limited by a fixed incident angle and cannot accurately reflect the performance differences of devices under complex incident conditions in real-world applications.

[0003] With the deepening research into optical properties in materials science and photovoltaics, spectral response testing under multi-angle incident conditions has become a critical requirement. The purpose of incident angle testing is to determine the impact of the solar incident angle on module performance. The incident angle determines the ratio of direct irradiance to diffuse irradiance available for conversion into electrical energy within the module, i.e., the ratio of usable light transmission to reflection. Both external (front) reflection and internal reflection depend on the solar incident angle and the module design. Therefore, at a specific incident angle, photovoltaic devices with different module designs may absorb different amounts of irradiance. Furthermore, the orientation of the module installation also has a significant impact on the incident angle.

[0004] Current quantum efficiency testing equipment has not yet achieved the ability to test incident light from multiple angles during the characterization of small components. This makes it impossible to quantitatively evaluate the shift in spectral response characteristics and the attenuation of energy conversion efficiency of photosensitive devices caused by dynamic changes in solar altitude angle (such as solar orbit movement, seasonal changes, or installation tilt adjustment) in actual working scenarios. As a result, there is a systematic deviation between laboratory data and performance indicators under real outdoor working conditions. Utility Model Content

[0005] Based on this, it is necessary to address the problem that current quantum efficiency testing equipment has not yet achieved multi-angle incident light testing capability in the characterization of small components. This results in the inability to quantitatively evaluate the spectral response characteristic shift and energy conversion efficiency decay caused by the dynamic changes of photosensitive devices under different working conditions in actual working scenarios, leading to a systematic deviation between laboratory data and performance indicators under real outdoor working conditions. Therefore, it is necessary to provide a photovoltaic module and its fixing structure.

[0006] A photovoltaic module multi-angle spectral response testing device, the photovoltaic module multi-angle spectral response testing device includes: a base, a protractor, a telescopic part, a rotating stage and a photosensitive detector;

[0007] The supporting surface of the base is set horizontally;

[0008] One end of the rotating platform is rotatably connected to the base so that the rotating platform is at an angle to the supporting surface; the side of the rotating platform away from the supporting surface is used to place the photovoltaic module.

[0009] The protractor is disposed on the support surface and is used to measure the included angle between the rotating platform and the support surface;

[0010] The telescopic part is disposed between the base and the rotating platform and spaced apart from the protractor; the photosensitive detector is disposed on the base and is used to detect the working condition of the light source.

[0011] In practical use, the aforementioned photovoltaic module multi-angle spectral response testing device places the photovoltaic module on the side of the rotating platform away from the base. The photosensitive detector detects the operating condition of the light source and controls the extension part to rise or fall according to the detected light source condition, so as to drive the rotating platform to rotate relative to the base to the corresponding angle and fix it. At this time, the protractor can measure or display the angle of the rotating platform relative to the base. Then, the photovoltaic module is tested for spectral response at a specific angle. The photosensitive detector detects the operating condition of the light source in real time (such as the movement of the sun's orbit, seasonal changes, or installation tilt adjustment). The extension part rises and falls according to the operating condition of the light source detected by the photosensitive detector, so as to drive the photovoltaic module on the rotating platform to a specific angle, thereby realizing the spectral response effect of the photovoltaic module to test the incident light from multiple angles. This allows for the quantitative evaluation of the spectral response characteristic shift and energy conversion efficiency decay of the photosensitive device caused by the dynamic change of the solar altitude angle in the actual working scenario, so that the laboratory data is consistent with the performance indicators under real outdoor working conditions.

[0012] In one embodiment, the photovoltaic module multi-angle spectral response testing device includes two telescopic parts, which are located on the 0° side and the 180° side of the protractor, respectively.

[0013] The rotating platform has a rotation angle of 180° so that the two telescopic parts can respectively abut against the two sides of the rotating platform.

[0014] In one embodiment, the photovoltaic module multi-angle spectral response testing device further includes a limiting part, which is connected to the rotating platform and abuts against the side of the photovoltaic module near the base.

[0015] In one embodiment, the limiting part is a magnetic component, which can be attracted to both sides of the rotating platform.

[0016] In one embodiment, the photovoltaic module multi-angle spectral response testing device further includes a lifting platform;

[0017] The base is placed on top of the lifting platform, which is used to raise or lower the base.

[0018] In one embodiment, the photovoltaic module multi-angle spectral response testing device further includes a moving part;

[0019] The movable part is disposed on the base, and the protractor, the telescopic part, the rotating platform, and the photosensitive detector are all disposed on the movable part. The movable part is used to drive the protractor, the telescopic part, the rotating platform, and the photosensitive detector to move horizontally.

[0020] In one embodiment, the photovoltaic module multi-angle spectral response testing device further includes a power unit, which is connected to the telescopic part, the lifting platform, and the moving part. The power unit is used to drive the lifting platform and the telescopic part to rise or fall, and to drive the moving part to move horizontally relative to the base.

[0021] In one embodiment, the lifting platform is one or more of an electric telescopic rod, a pneumatic cylinder, and a hydraulic cylinder;

[0022] The telescopic part is one or more of an electric telescopic rod, a pneumatic cylinder, and a hydraulic cylinder; the moving part is one or more of a linear bearing and an electric guide rail.

[0023] In one embodiment, the photodetector includes a laser coplanarization meter and a silicon-germanium probe disposed on the base. The silicon-germanium probe is used to monitor the operating conditions of the light source, and the laser coplanarization meter is used to detect the coplanarity between the emitting surface of the light source and the silicon-germanium probe.

[0024] An embodiment of this application also provides a photovoltaic module multi-angle spectral response testing system, the photovoltaic module multi-angle spectral response testing system comprising: a control module, a display module, and the photovoltaic module multi-angle spectral response testing device;

[0025] The control module is connected to the protractor, telescopic part, display module and photosensitive detector.

[0026] The photodetector transmits the operating conditions of the light source to the control module for analysis. The control module controls the raising and lowering of the telescopic part according to the operating conditions of the light source. The telescopic part drives the rotating platform to rotate relative to the base to a corresponding angle. The protractor transmits the angle between the rotating platform and the base to the control module.

[0027] The control module sends the operating status of the light source and the angle of the protractor to the display module, which then displays the information.

[0028] In practical use, the aforementioned photovoltaic module multi-angle spectral response testing system places the photovoltaic module on the side of the rotating platform away from the base. A photosensor detects the operating condition of the light source and sends the data to the control module. The control module then controls the extension mechanism to rise or fall based on the detected light source condition, causing the rotating platform to rotate relative to the base to the corresponding angle and fix it in place. At this time, a protractor measures the angle of the rotating platform relative to the base and transmits the angle information to the display module via the control module. The display module displays the angle information, and the control module transmits the light source condition to the display module for operator reference. Subsequently, a specific angle spectral response test is performed on the photovoltaic module. The photosensor detects the operating condition of the light source in real time (such as solar orbit movement, seasonal changes, or installation tilt adjustment). The extension mechanism rises and falls according to the light source condition detected by the photosensor, causing the photovoltaic module on the rotating platform to be at a specific angle. This allows for testing the spectral response effect of the photovoltaic module under multi-angle incident light, enabling quantitative evaluation of the spectral response characteristic shift and energy conversion efficiency attenuation caused by dynamic changes in the solar altitude angle in actual working scenarios. This ensures that laboratory data is consistent with performance indicators under real outdoor conditions. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a photovoltaic module multi-angle spectral response testing device performing small spot testing according to an embodiment.

[0030] Figure 2 This is a schematic diagram of a photovoltaic module multi-angle spectral response testing device performing a large light spot test according to an embodiment.

[0031] Explanation of icon numbers:

[0032] 10- Photovoltaic module multi-angle spectral response testing device;

[0033] 100 - Base; 110 - Support surface;

[0034] 200-Angle measuring piece;

[0035] 300 - Telescopic part;

[0036] 400-rotary table;

[0037] 500-Photosensitive Detector;

[0038] 600 - Limiting part;

[0039] 700 - Lifting platform; 710 - Moving part;

[0040] 20-Photovoltaic module; 21-Light source. Detailed Implementation

[0041] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0042] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0044] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0045] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0046] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0047] See Figure 1 and Figure 2 , Figure 1 A schematic diagram of a photovoltaic module multi-angle spectral response testing device performing small spot testing is shown in one embodiment. Figure 2 A schematic diagram of a photovoltaic module multi-angle spectral response testing device performing a large light spot test is shown in one embodiment. The photovoltaic module multi-angle spectral response testing device 10 provided in one embodiment of this application includes: a base 100, a protractor 200, a telescopic part 300, a rotating stage 400, and a photosensor 500.

[0048] In the aforementioned photovoltaic module multi-angle spectral response testing device 10, the support surface 110 of the base 100 is horizontally arranged. One end of the rotating stage 400 is rotatably connected to the base 100 so that the rotating stage 400 forms an angle with the support surface 110, and the side of the rotating stage 400 facing away from the support surface 110 is used to place the photovoltaic module 20. A protractor 200 is disposed on the support surface 110 and is used to measure the angle between the rotating stage 400 and the support surface 110. A telescopic part 300 is disposed between the base 100 and the rotating stage 400 and is spaced apart from the protractor 200. A photosensor 500 is disposed on the base 100 and is used to detect the operating condition of the light source 21.

[0049] In actual use, the photovoltaic module multi-angle spectral response testing device 10 described above places the photovoltaic module 20 on the side of the rotating platform 400 away from the base 100. The photodetector 500 detects the operating condition of the light source 21 and controls the extension part 300 to rise or fall according to the operating condition of the light source 21, so as to drive the rotating platform 400 to rotate relative to the base 100 to the corresponding angle and fix it. At this time, the protractor 200 can measure or display the angle of the rotating platform 400 relative to the base 100. Then, a specific angle spectral response test is performed on the photovoltaic module 20. The operating conditions of the light source 21 are detected in real time (such as daily orbital movement, seasonal changes, or installation tilt adjustment). The telescopic part 300 is raised and lowered according to the operating conditions of the light source 21 detected by the photosensitive detector 500, so as to drive the photovoltaic module 20 on the rotating stage 400 to a specific angle. This enables the spectral response effect of the photovoltaic module 20 to be tested by incident light from multiple angles. This allows for the quantitative evaluation of the spectral response characteristic shift and energy conversion efficiency decay of the photosensitive device caused by the dynamic change of the solar altitude angle in actual working scenarios, so that the laboratory data is consistent with the performance indicators under real outdoor working conditions.

[0050] See Figure 1 and Figure 2 In one embodiment, the photovoltaic module multi-angle spectral response testing device 10 includes two telescopic portions 300, located on the 0° side and the 180° side of the protractor 200, respectively. The rotation angle of the rotating platform 400 is 180°, allowing the two telescopic portions 300 to abut against both sides of the rotating platform 400. In this embodiment, when the rotating platform 400 rotates between 0° and 90°, the telescopic portion 300 on the 0° side of the protractor 200 extends and supports the rotating platform 400. When the rotating platform 400 rotates between 90° and 180°, the telescopic portion 300 on the 180° side of the protractor 200 extends and supports the rotating platform 400, enabling the rotating platform 400 to rotate from 0° to 180°. This allows for more diverse testing angles and orientations of the photovoltaic module 20, rather than just one orientation, and allows the photovoltaic module 20 to be placed on both sides of the rotating platform 400.

[0051] Specifically, the protractor 200 can be a protractor, an electronic goniometer, or other forms, as long as it can measure the angle between the rotating platform 400 and the base 100. The angle can be read manually or displayed electronically. The electronic goniometer can be an infrared goniometer, a shape memory alloy goniometer, or other forms. When the protractor is a semi-circular protractor, the rotation axis of the rotating platform coincides with the axis of the protractor. Specifically, the rotating platform and the base are rotatably connected by a pivot.

[0052] See Figure 1 and Figure 2In one embodiment, the photovoltaic module multi-angle spectral response testing device 10 further includes a limiting part 600, which is connected to the rotating stage 400 and abuts against the side of the photovoltaic module 20 near the base 100. Specifically, the limiting part 600 is a magnetic element that can be attracted to both sides of the rotating stage 400. This allows the magnetic element to be attracted to one side of the rotating stage 400 when the rotating stage 400 rotates between 90° and 180°, and to the other side when the rotating stage 400 rotates between 0° and 90°. Simultaneously, the magnetic element can be attracted to any position on one side of the rotating stage 400, thus limiting the photovoltaic module 20 under test to any position on one side of the rotating stage 400, thereby improving the utilization efficiency of the magnetic element.

[0053] In another embodiment, the surface of the rotating stage 400 is provided with a boss to limit the photovoltaic module 20 under test. The limiting part 600 can also be a movable block located inside the rotating stage 400 and able to extend to any side of the rotating stage 400. The specific form of the limiting part 600 will not be described here.

[0054] See Figure 1 and Figure 2 In one embodiment, the photovoltaic module multi-angle spectral response testing device 10 further includes a lifting platform 700. A base 100 is placed on top of the lifting platform 700, which is used to raise or lower the base 100. This allows for changing the distance between the photovoltaic module 20 under test and the light source 21. Furthermore, without changing the telescopic section 300, the angle between the light source 21 and the photovoltaic module 20 under test can be changed solely by raising and lowering the lifting platform 700. Alternatively, the telescopic section 300 and the lifting platform 700 can cooperate to adjust the angle of the photovoltaic module 20 under test relative to the light source 21.

[0055] See Figure 1 and Figure 2 In one embodiment, the photovoltaic module multi-angle spectral response testing device 10 further includes a moving part 710. The moving part 710 is disposed on the base 100, and the protractor 200, telescopic part 300, rotating stage 400, and photodetector 500 are all disposed on the moving part 710. The moving part 710 is used to drive the protractor 200, telescopic part 300, rotating stage 400, and photodetector 500 to move horizontally, thereby adjusting the alignment of the light spot center with the photosensitive area of ​​the silicon-germanium probe. Similarly, even without movement of the lifting stage 700 and the telescopic rod, the angle between the photovoltaic module 20 under test and the light source 21 can be changed by moving the protractor 200, telescopic part 300, rotating stage 400, and photodetector 500 horizontally solely through the moving part 710.

[0056] See Figure 1 and Figure 2In one embodiment, the photovoltaic module multi-angle spectral response testing device 10 further includes a power unit, which is connected to the telescopic part 300, the lifting platform 700, and the moving part 710. The power unit is used to drive the lifting platform 700 and the telescopic part 300 to rise or fall, and to drive the moving part 710 to move horizontally relative to the base 100. The power unit can be connected to a control module, thereby controlling the power unit to provide power to the telescopic part 300, the lifting platform 700, and the moving part 710, thereby realizing the movement of the telescopic part 300, the lifting platform 700, and the moving part 710, and achieving the effect of intelligent control.

[0057] In one embodiment, the lifting platform 700 is one or more of an electric telescopic rod, a pneumatic cylinder, and a hydraulic cylinder. The telescopic part 300 is one or more of an electric telescopic rod, a pneumatic cylinder, and a hydraulic cylinder. The moving part 710 is one or more of a linear bearing and an electric guide rail. Other forms of the telescopic part 300, the moving part 710, and the lifting platform 700 are also possible, and the specific forms are not limited herein.

[0058] In one embodiment, the photodetector 500 includes a laser coplanarization device and a silicon-germanium probe disposed on the base 100. The silicon-germanium probe is used to monitor the operating condition of the light source 21, and the laser coplanarization device is used to detect the coplanarity between the emitting surface of the light source 21 and the silicon-germanium probe.

[0059] See Figure 1 and Figure 2 An embodiment of this application also provides a photovoltaic module multi-angle spectral response testing system, which includes a control module, a display module, and a photovoltaic module multi-angle spectral response testing device 10.

[0060] The control module is connected to the protractor 200, the telescopic part 300, the display module, and the photosensitive detector 500.

[0061] The photodetector 500 transmits the operating conditions of the light source 21 to the control module for analysis. The control module controls the extension part 300 to rise and fall according to the operating conditions of the light source 21. The extension part 300 drives the rotating platform 400 to rotate relative to the base 100 to the corresponding angle. The protractor 200 transmits the angle between the rotating platform 400 and the base 100 to the control module.

[0062] The control module sends the operating status of the light source 21 and the angle of the protractor 200 to the display module and displays them.

[0063] In actual use, the photovoltaic module 20 multi-angle spectral response testing system described above places the photovoltaic module 20 on the side of the rotating platform 400 away from the base 100. The photodetector 500 detects the operating condition of the light source 21 and sends it to the control module. The control module controls the extension part 300 to rise or fall according to the detected operating condition of the light source 21, so as to drive the rotating platform 400 to rotate relative to the base 100 to the corresponding angle and fix it. At this time, the protractor 200 can measure the angle of the rotating platform 400 relative to the base 100 and transmit the angle information to the display module through the control module. The display module displays the angle information, and the control module transmits the operating condition of the light source 21 to the display module for the operator's reference. Subsequently, a specific angle spectral response test is performed on the photovoltaic module 20. The photodetector 500 detects the operating conditions of the light source 21 in real time (such as solar orbit movement, seasonal changes, or installation tilt adjustment). The telescopic part 300 moves up and down according to the operating conditions of the light source 21 detected by the photodetector 500, so as to drive the photovoltaic module 20 on the rotating platform 400 to a specific angle. This enables the spectral response effect of the photovoltaic module 20 to be tested by incident light from multiple angles. This allows for the quantitative evaluation of the spectral response characteristic shift and energy conversion efficiency decay of the photosensitive device caused by the dynamic change of the solar altitude angle in actual working scenarios, ensuring that the laboratory data is consistent with the performance indicators under real outdoor working conditions.

[0064] Specifically, see Figure 1 During small spot testing: First, optical calibration is performed: the moving part 710 moves the protractor 200, rotating stage 400, sensor detector, and telescopic part 300, aligning the center of the spot with the photosensitive area of ​​the silicon probe using the positioning system of the light source 21. The photoelectric calibration program is then initiated to complete the spectral response benchmark calibration. Next, mechanical positioning is performed: the telescopic part 300 lifts and lowers, rotating the rotating stage 400 to the corresponding position. The protractor 200 precisely measures and sets the target angle; a magnetic component secures the photovoltaic module 20 to the rotating stage 400. Coplanar calibration: the telescopic part 300 is fine-tuned to ensure that the surface normal of the photovoltaic module 20 is orthogonal to the incident optical axis. The height of the lifting stage 700 is simultaneously adjusted, and a laser coplanarity meter is used to verify the coplanarity of the emitting surface of the light source 21 and the receiving surface of the silicon-germanium probe.

[0065] See Figure 2 During the large spot test: First, the telescopic part 300 lifts and lowers to rotate the rotating stage 400 to the corresponding position. The target angle is accurately measured and set using the protractor 200. A standard part of the same material as the photovoltaic module 20 under test is selected and placed on the side of the rotating stage 400 away from the base 100. The standard part is then fixed with a magnetic component to ensure that the surface of the standard part faces the center area of ​​the incident light source 21, thus completing the full coverage verification of the optical path system. Standardized procedures such as spectral response correction and signal gain adjustment are then completed. After the calibration procedure is completed, the standard part is replaced with the photovoltaic module 20 under test, and the formal testing procedure is performed under the same test conditions.

[0066] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A multi-angle spectral response testing device for photovoltaic modules, characterized in that, The photovoltaic module multi-angle spectral response testing device includes: a base, a protractor, a telescopic part, a rotating stage, and a photosensitive detector; The supporting surface of the base is set horizontally; One end of the rotating platform is rotatably connected to the base so that the rotating platform is at an angle to the supporting surface; the side of the rotating platform away from the supporting surface is used to place the photovoltaic module. The protractor is disposed on the support surface and is used to measure the included angle between the rotating platform and the support surface; The telescopic part is disposed between the base and the rotating platform and spaced apart from the protractor; the photosensitive detector is disposed on the base and is used to detect the working condition of the light source.

2. The photovoltaic module multi-angle spectral response testing device according to claim 1, characterized in that, The photovoltaic module multi-angle spectral response testing device includes two telescopic parts, which are located on the 0° side and the 180° side of the protractor, respectively. The rotating platform has a rotation angle of 180° so that the two telescopic parts can respectively abut against the two sides of the rotating platform.

3. The photovoltaic module multi-angle spectral response testing device according to claim 2, characterized in that, The photovoltaic module multi-angle spectral response testing device also includes a limiting part, which is connected to the rotating platform and abuts against the side of the photovoltaic module near the base.

4. The photovoltaic module multi-angle spectral response testing device according to claim 3, characterized in that, The limiting part is a magnetic component, which can be attracted to both sides of the rotating platform.

5. The photovoltaic module multi-angle spectral response testing device according to claim 1, characterized in that, The photovoltaic module multi-angle spectral response testing device also includes a lifting platform; The base is placed on top of the lifting platform, which is used to raise or lower the base.

6. The photovoltaic module multi-angle spectral response testing device according to claim 5, characterized in that, The photovoltaic module multi-angle spectral response testing device also includes a moving part; The movable part is disposed on the base, and the protractor, the telescopic part, the rotating platform, and the photosensitive detector are all disposed on the movable part. The movable part is used to drive the protractor, the telescopic part, the rotating platform, and the photosensitive detector to move horizontally.

7. The photovoltaic module multi-angle spectral response testing device according to claim 6, characterized in that, The photovoltaic module multi-angle spectral response testing device also includes a power unit, which is connected to the telescopic part, the lifting platform, and the moving part. The power unit is used to drive the lifting platform and the telescopic part to rise or fall, and to drive the moving part to move horizontally relative to the base.

8. The photovoltaic module multi-angle spectral response testing device according to claim 6, characterized in that, The lifting platform is one or more of the following: electric telescopic rod, pneumatic cylinder, and hydraulic cylinder; The telescopic part is one or more of an electric telescopic rod, a pneumatic cylinder, and a hydraulic cylinder; the moving part is one or more of a linear bearing and an electric guide rail.

9. The photovoltaic module multi-angle spectral response testing device according to claim 1, characterized in that, The photodetector includes a laser coplanarization meter and a silicon-germanium probe mounted on a base. The silicon-germanium probe is used to monitor the operating conditions of the light source, and the laser coplanarization meter is used to detect the coplanarity between the emitting surface of the light source and the silicon-germanium probe.

10. A multi-angle spectral response testing system for photovoltaic modules, characterized in that, The photovoltaic module multi-angle spectral response testing system includes: a control module, a display module, and the photovoltaic module multi-angle spectral response testing device according to any one of claims 1-9; The control module is also connected to the protractor, telescopic part, display module and photosensitive detector; The photodetector transmits the operating conditions of the light source to the control module for analysis. The control module controls the raising and lowering of the telescopic part according to the operating conditions of the light source. The telescopic part drives the rotating platform to rotate relative to the base to a corresponding angle. The protractor transmits the angle between the rotating platform and the base to the control module. The control module sends the operating status of the light source and the angle of the protractor to the display module, which then displays the information.

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