Static load test cross beam and system for photovoltaic module

Abstract

The utility model discloses a static load test cross beam and a static load test system for a photovoltaic module. The static load test cross beam comprises two edge fixing parts and a supporting part, the two edge fixing parts are fixed on a support of a load test platform, and the two edge fixing parts are fixedly connected with two opposite frames of a photovoltaic module respectively; the supporting part is positioned on the back surface of the photovoltaic module, and a gap is formed between the supporting part and the back surface of the photovoltaic module; one end of the supporting part is clamped with the side face of one edge fixing part, and the other end of the supporting part is clamped with the side face of the other edge fixing part. In the process of testing the back mechanical load of the photovoltaic module, the middle supporting part of the static load testing cross beam can be removed, so that the back load of the photovoltaic module can reach the actual strength, and the testing accuracy is improved.

Description

Technical Field

[0001] The utility model relates to a static load testing beam and a system for photovoltaic components. Background Art

[0002] Photovoltaic modules need to withstand various harsh outdoor environments (such as strong winds, heavy snow, rain, hail, etc.) for a long time. Therefore, mechanical load testing of photovoltaic modules is very necessary. Currently, the test process using the test standard IEC61215 requires the photovoltaic modules to be fixed to the test platform using beams, and cyclic mechanical load tests are performed on the front and back of the photovoltaic modules respectively. During the test, the load applied to the photovoltaic modules needs to avoid the beams and the frames of the photovoltaic modules. Because the beams are generally located on the back of the photovoltaic modules and are installed throughout the entire length or width of the photovoltaic modules, during the mechanical load test on the back of the photovoltaic modules, part of the load is often inevitably applied to the beams, resulting in the load on the back of the photovoltaic modules not reaching the actual strength, affecting the accuracy of the test. Utility Model Content

[0003] In view of this, the present invention provides a static load test beam and system for photovoltaic modules. During the process of testing the mechanical load on the back of the photovoltaic module, the middle support part of the static load test beam can be removed, so that the load on the back of the photovoltaic module can reach the actual strength, thereby improving the test accuracy.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] In a first aspect, the utility model provides a static load test beam for photovoltaic modules, comprising: two edge fixing portions and a support portion, wherein:

[0006] The two edge fixing portions are fixed on a bracket of the load test platform, and the two edge fixing portions are respectively fixedly connected to two opposite frames of the photovoltaic module;

[0007] The support portion is located on the back side of the photovoltaic module, and there is a gap between the support portion and the back side of the photovoltaic module;

[0008] One end of the support portion is detachably connected to one of the edge fixing portions;

[0009] The other end of the supporting portion is detachably connected to the other edge fixing portion.

[0010] In a second aspect, an embodiment of the present invention provides a static load testing system for photovoltaic modules, characterized in that it comprises: a load testing platform and the static load testing beam provided in the embodiment of the first aspect above, wherein:

[0011] The two edge fixing parts of the static load test beam are fixed on the bracket of the load test platform.

[0012] The technical solution of the first aspect of the above utility model has the following advantages or beneficial effects:

[0013] The static load test beam for photovoltaic modules provided by the embodiment of the present invention includes an edge fixing portion and a support portion that are engaged with each other. Since the edge fixing portion and the support portion are detachably connected, during the mechanical load test on the light-receiving surface of the photovoltaic module, the support portion is installed on the edge fixing portion. The static load test beam simulates the mounting frame beam of the actual application scenario of the photovoltaic module, making the test scenario closer to the real scenario. During the mechanical load test on the backlight surface of the photovoltaic module, the support portion is removed from the edge fixing portion, which can avoid the static load test beam blocking the test, thereby effectively improving the accuracy of the static load test on the photovoltaic module. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a front structural schematic diagram of a static load test beam installed on a load test platform according to an embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the back structure of a static load test beam installed on a load test platform according to an embodiment of the present utility model;

[0016] Figure 3 This is a schematic diagram of a first installation relationship of a frame, an edge fixing portion, and a bracket of a photovoltaic module according to an embodiment of the present utility model;

[0017] Figure 4A This is a schematic diagram of a first installation relationship between a support block and a bracket according to an embodiment of the present utility model;

[0018] Figure 4B This is a schematic diagram of a second installation relationship between the support block and the bracket according to an embodiment of the present utility model;

[0019] Figure 4C 1 is a schematic diagram of a third installation relationship between the support block and the bracket according to an embodiment of the present utility model;

[0020] Figure 5A This is a schematic diagram of a second installation relationship of the frame, edge fixing portion and bracket of a photovoltaic module according to an embodiment of the present utility model;

[0021] Figure 5B This is a schematic diagram of a third installation relationship of the frame, edge fixing portion and bracket of a photovoltaic module according to an embodiment of the present utility model;

[0022] Figure 61 is a schematic cross-sectional view of a static load test beam according to a first structure of an embodiment of the present utility model;

[0023] Figure 7 According to the embodiment of the present utility model Figure 6 A three-dimensional structural diagram of a portion of the static load test beam shown;

[0024] Figure 8 1 is a schematic cross-sectional view of a static load test beam according to a second structure of an embodiment of the present utility model;

[0025] Figure 9 According to the embodiment of the present utility model Figure 8 A three-dimensional structural diagram of a portion of the static load test beam shown;

[0026] Figure 10 It is a schematic diagram of the main process of the static load testing method for photovoltaic modules according to an embodiment of the present utility model.

[0027] The reference numerals are as follows:

[0028] 10-edge fixing portion; 11-support block; 12-first fixed connection structure; 121-limiting hoop; 13-second fixed connection structure; 131-compression block; 132-connecting piece; 14-first groove; 15-first protrusion; 20-support portion; 30-load test platform; 31-bracket; 40-photovoltaic module; 41-frame. DETAILED DESCRIPTION

[0029] When testing the mechanical static load of photovoltaic modules using existing static load testing systems, it is necessary to ensure that the load does not come into contact with the module frame or support beams. However, because the support beams in existing static load testing systems are integrated, they are present regardless of whether the mechanical static load is being tested on the front or back of the photovoltaic module. During the back-load test of the photovoltaic module, the mechanical load (such as a sandbag load) may come into contact with the support beams, resulting in inaccurate test results.

[0030] In order to solve the above-mentioned problems existing in the prior art, an embodiment of the present invention provides a static load test beam with a new structure, which can solve the problem of contact between the static load test beam and the mechanical load (such as sandbag load) and improve the accuracy and reliability of the test results.

[0031] The detachable connection involved in the embodiments of the present invention means that two structures or two components can be connected directly or indirectly through a third component, and the connection between the two structures or two components can be removed to disconnect the two structures or two components. After the disconnection, the two structures or two components can be reconnected, and the reconnected structure can still maintain a relatively stable connection relationship. For example, the detachable connection between the support portion 20 and the edge fixing portion 10 can mean that the support portion 20 and the edge fixing portion 10 can be fixedly connected by a connecting member such as a screw (that is, the support portion 20 and the edge fixing portion 10 cannot move relative to each other). After the connecting member is subsequently removed, the fixed connection between the support portion 20 and the edge fixing portion 10 is released, and the support portion 20 and the edge fixing portion 10 can be re-fixed and connected using the connecting member. For another example, the support portion 20 and the edge fixing portion 10 can also be engaged with each other. Under the action of an external force, the engaging connection between the support portion 20 and the edge fixing portion 10 is released, thereby achieving the purpose of disassembly.

[0032] One end and the other end of a structure involved in an embodiment of the present invention are generally based on the extension direction of the structure, and are distributed on both sides of the extension direction. For example, one end and the other end of the support part 20 refer to the ends distributed on both sides of the extension direction of the support part 20.

[0033] The “inner side” of the structure involved in the embodiment of the present invention refers to the two opposite side surfaces of the two supporting parts 20 after the static load test beam is installed on the bracket 31 of the load test platform 30 .

[0034] It is worth noting that the terms "first," "second," and so on, used in the embodiments of the present invention are used to distinguish similar objects, and are not necessarily used to describe a specific number or order. It should be understood that the terms used in this manner are interchangeable where appropriate. This is merely a way of distinguishing objects with the same attributes in the embodiments of the present invention.

[0035] The embodiment of the utility model Figure 1 and Figure 2 The front and back structural diagrams of the static load test beam and photovoltaic modules provided by the embodiment of the present invention installed on the load test platform are respectively shown; Figure 3 A schematic diagram showing a first installation relationship of the frame, edge fixing portion and bracket of the photovoltaic module provided by an embodiment of the present utility model; Figure 4A 、 Figure 4B and Figure 4C A schematic diagram showing the installation relationship between the support block and the bracket in the edge fixing portion provided by an embodiment of the present utility model; Figure 5A and Figure 5BSchematic diagrams showing the second and third installation relationships of the frame, edge fixing portion and bracket of the photovoltaic module provided by the embodiment of the present utility model respectively; Figure 6 A schematic cross-sectional view of a static load test beam of a first structure provided by an embodiment of the present utility model is shown; Figure 7 Showing the utility model embodiment provided Figure 6 A three-dimensional structural diagram of a partial area of a static load test beam of the first structure shown; Figure 8 A schematic cross-sectional view of a static load test beam of a second structure provided by an embodiment of the present utility model is shown; Figure 9 Showing the utility model embodiment provided Figure 8 The three-dimensional structural diagram of a partial area of the static load test beam of the second structure is shown.

[0036] It is worth noting that the static load test beam for photovoltaic modules provided by the embodiment of the present invention is generally used in testing scenarios of photovoltaic modules.

[0037] Specifically, if Figure 1 、 Figure 2 、 Figures 6 to 9 As shown, the static load test beam for photovoltaic modules may include:

[0038] Two edge fixing parts 10 and support part 20, wherein,

[0039] The two edge fixing parts 10 are fixed on the bracket 31 of the load testing platform 30, and the two edge fixing parts 10 are respectively fixedly connected to the two opposite frames 41 of the photovoltaic module 40;

[0040] The support portion 20 is located on the back side of the photovoltaic module 40 and has a gap between the support portion 20 and the back side of the photovoltaic module 40;

[0041] One end of the support portion 20 is detachably connected to an edge fixing portion 10;

[0042] The other end of the supporting portion 20 is detachably connected to the other edge fixing portion 10 .

[0043] After the edge fixing portion 10 is fixed to the bracket 31 , the edge fixing portion 10 will not shift relative to the bracket 31 .

[0044] The frame 41 to which the edge fixing portion 10 is fixedly connected can be two opposite long sides of the photovoltaic module, or two opposite short sides of the photovoltaic module. Preferably, the frame 41 to which the edge fixing portion 10 is fixedly connected can be two opposite long sides of the photovoltaic module.

[0045] Among them, regarding the detachable connection between the support portion 20 and the edge fixing portion 10, preferably, the detachable connection can be disassembled by using only external force without the need for disassembly tools such as a hammer, a screwdriver, etc.

[0046] That is to say, the static load test beam provided in the embodiment of the present invention is a split structure, which is divided into three parts in the extension direction: a support portion 20 located on the back of the photovoltaic module and two edge fixing portions 10 located at both ends of the support portion 20.

[0047] In addition, the load test platform 30 can enable the photovoltaic module to bend freely during the test process. The load test platform 30 can be directly selected from existing load test platforms 30.

[0048] The above-mentioned static load test beam has a detachable connection between the edge fixing part and the support part. During the mechanical load test on the light-receiving side of the photovoltaic module, the support part is installed on the edge fixing part. The static load test beam simulates the mounting frame beam of the actual application scenario of the photovoltaic module, making the test scenario closer to the real scenario. During the mechanical load test on the backlight side of the photovoltaic module, the support part is removed from the edge fixing part, which can avoid the static load test beam blocking the test, effectively improving the accuracy of the static load test on the photovoltaic module.

[0049] In addition, the static load test beam provided by the embodiment of the present invention simplifies the entire component test installation process and facilitates operation by personnel.

[0050] Specifically, regarding the specific implementation structure of the detachable connection between the support portion 20 and the edge fixing portion 10, one end of the support portion 20 engages with the side surface of one edge fixing portion 10, and the other end of the support portion 20 engages with the side surface of the other edge fixing portion 10. This snap-fit connection structure facilitates assembly and disassembly of the support portion 20, thereby ensuring efficient testing of photovoltaic modules.

[0051] More specifically, if Figure 3 、 Figure 5A and Figure 5B As shown, the edge fixing portion 10 may include: a support block 11, a first fixed connection structure 12 and a second fixed connection structure 13, wherein:

[0052] The first fixed connection structure 12 is used to fix the support block 11 on the bracket 31;

[0053] The second fixed connection structure 13 is used to fix the frame of the photovoltaic module 40 on the support block 11;

[0054] The inner side surface of the support block 11 is engaged with one end of the support portion 20 .

[0055] The width and thickness of the support block 11 are generally consistent with the width and thickness of the support portion 20 , so as to ensure the integrity of the entire static load test beam after the support block 11 is engaged with the support portion 20 .

[0056] Furthermore, there are multiple implementation structures for the first fixed connection structure 12. Among them,

[0057] like Figure 4A 、 Figure 4B and Figure 4C As shown, the implementation structure of the first fixed connection structure 12 may include: a limiting hoop 121, wherein the limiting hoop 121 is sleeved on the support block 11; both ends of the limiting hoop 121 are fixed on the bracket 31, and are used to press the support block 11 onto the bracket 31.

[0058] The two ends of the limiting hoop 121 can be fixed to the bracket 31 by screws. Figure 4A and Figure 4B As shown, the side of the limiting hoop 121 can also be fixed to the support block 11 by screws to further improve the stability of the support block 11. Figure 4A As shown, the limiting hoop 121 is a clamp with a semicircular cross section; it can also be as shown in FIG. Figure 4B As shown, the limiting body 121 is a triangular-shaped limiting body disposed on both sides of the support block 11; Figure 4C As shown, the convex structure matches the support block 11.

[0059] like Figure 5A and Figure 5B As shown, another implementation structure of the first fixed connection structure 12 may include: a mounting hole provided on the support block 11 and a mounting hole located on the bracket 31 that matches the mounting hole of the support block 11, and screws are assembled to the mounting holes on the support block 11 and the mounting holes on the bracket 31 to fix the support block 11. Preferably, the above-mentioned Figure 4A 、 Figure 4B and Figure 4C The implementation structure of the first fixed connection structure 12 shown fixes the support block 11 to better ensure the stability of the support block 11.

[0060] In addition, the second fixed connection structure 13 may also have various structures.

[0061] Specifically, if Figure 3As shown, the first structure of the second fixed connection structure 13 may include: a compression block 131, a first assembly hole provided on the compression block 131, a second assembly hole provided on the support block 11, and a connecting member 132, wherein the first assembly hole and the second assembly hole match; the connecting member 132 is assembled in the first assembly hole and the second assembly hole; one end of the compression block 131 is in contact with the upper surface and side surface of the frame 41; the compression block 131, the connecting member 132 and the support block 11 cooperate to compress the frame 41.

[0062] Through this structure, by contacting with the frame 41, the photovoltaic assembly can be relatively stabilized without affecting the testing process of the photovoltaic assembly.

[0063] In addition, to reduce the local stress generated by the connector 132 on the frame 41 of the photovoltaic module under the action of mechanical loads (such as sandbags), washers can be used to increase the force-bearing area of the connector 132 and reduce damage to the photovoltaic module and the frame.

[0064] In addition, if Figure 5A and Figure 5B As shown, the second structure of the second fixed connection structure 13 may include: a third assembly hole provided on the support block 11 and a fourth assembly hole provided on the lower surface of the frame 41, wherein the third assembly hole matches the fourth assembly hole and is fixedly connected by screws, wherein the screw-fixed connection can be as follows Figure 5A As shown, the screws pass through the inner side of the frame 41 (the side close to the photovoltaic module) to the bottom of the support block 11 and are fixed by nuts; Figure 5B As shown, the screws pass from the bottom of the support block 11 to the inner side of the frame 41 and are fixed by nuts. This structure can achieve the purpose of fixing the photovoltaic module without affecting the testing process of the photovoltaic module.

[0065] With respect to the various structures of the second fixed connection structure 13 , users can select according to their needs or different installation methods provided by the manufacturer.

[0066] It is worth noting that the two implementation structures of the first fixed connection structure 12 and the two structures of the second fixed connection structure 13 can be arbitrarily combined. They can be the first implementation structure of the first fixed connection structure 12 and the first structure combination of the second fixed connection structure 13, or the first implementation structure of the first fixed connection structure 12 and the second structure combination of the second fixed connection structure 13. They can also be the first structure combination of the second implementation structure of the first fixed connection structure 12 and the second structure combination of the second fixed connection structure 13, or the second implementation structure of the first fixed connection structure 12 and the second structure combination of the second fixed connection structure 13. Preferably, the structure included in the static load test beam is the first implementation structure of the first fixed connection structure 12 and the first structure combination of the second fixed connection structure 13 (i.e. Figure 3 structure shown).

[0067] It is worth noting that after screws are secured (for example, the compression block 131 is secured to the support block 11 via the connector 132; the retaining collar 121 is secured to the bracket 31, etc.), a torque wrench should be used to confirm that the screw torque is between 14 N·m and 20 N·m. For example, the torque wrench can confirm that the screw torque is 14 N·m, 15 N·m, 16 N·m, 17 N·m, 18 N·m, 19 N·m, 20 N·m, etc.

[0068] Furthermore, if Figures 6 to 9 As shown, grooves 14 and protrusions 15 matching the grooves 14 are respectively provided at both ends of the support portion 20 and the inner side surfaces of the two edge fixing portions 10 , wherein the grooves 14 and the protrusions 15 are engaged with each other.

[0069] Specifically, the relative relationship between the groove 14 and the protrusion 15 can be as follows: Figure 6 and Figure 7 As shown, the groove 14 is provided on the edge fixing portion 10, and correspondingly, the protrusion 15 is provided on both ends of the support portion 20. In addition, the relative relationship between the groove 14 and the protrusion 15 can also be as follows: Figure 8 and Figure 9 As shown, the protrusion 15 is provided on the edge fixing portion 10, and correspondingly, the groove 14 is provided at both ends of the support portion 20. The matching design of the groove 14 and the protrusion 15 facilitates the assembly and disassembly of the support portion 20.

[0070] Furthermore, if Figure 8 As shown in Figure 9 , a first limiting strip 21 is disposed within the groove; a first limiting groove matching the first limiting strip 21 is disposed on the protrusion. The first limiting strip 21 and the first limiting groove extend along the assembly direction of the support portion 20. When the protrusion is assembled in the groove 21, the first limiting strip 21 is located within the first limiting groove, thereby enhancing the secure engagement between the support portion 20 and the edge fixing portion 10.

[0071] In addition, if Figure 6 and Figure 7 As shown, a second limiting strip 22 may be provided on the protrusion; a second limiting groove matching the second limiting strip 22 is provided in the groove, wherein the second limiting strip 22 and the second limiting groove extend along the assembly direction of the support portion 20; when the protrusion is assembled in the groove 21, the second limiting strip 22 is located in the second limiting groove.

[0072] The above-mentioned assembly direction can be parallel to the main surface of the photovoltaic module, or perpendicular to the main surface of the photovoltaic module.

[0073] Regarding the above Figures 6 to 9The structure shown can be installed directly by plugging and unplugging, making the installation and removal of the support part 20 relatively simple and easy to operate.

[0074] Furthermore, if Figure 3 and Figure 5A 、 Figure 5B As shown, the side of the two edge fixing portions 10 located below the frame 41 does not extend beyond the inner edge of the frame. Therefore, after the support portion 20 is removed, the edge fixing portion 10 will not block or support the falling mechanical load, thereby not affecting the photovoltaic module test and ensuring the accuracy of the photovoltaic module mechanical load test.

[0075] Furthermore, the embodiment of the present invention provides a static load testing system for photovoltaic modules. Specifically, the static load testing system may include: a load testing platform 30 and a static load testing beam provided by any of the above embodiments, wherein:

[0076] The two edge fixing portions 10 of the static load test beam are fixed on the bracket 31 of the load test platform 30 .

[0077] It is understandable that the static load test system may further include: an instrument for monitoring the continuity of the internal circuit of the photovoltaic module during the test, etc., to meet the requirements of the static load test.

[0078] In addition, the static load test system can provide appropriate weight or pressure to the photovoltaic module, gradually and evenly increasing the load. The test load provided by the system to the photovoltaic module can be applied by air pressure or weight. All forces are perpendicular to the main surface of the photovoltaic module.

[0079] Furthermore, the present invention provides a method for testing the static load of a photovoltaic module. Figure 10 As shown, the static load test method may include the following steps:

[0080] Step S1001: Install the static load test beam on the bracket 31 of the load test platform 30;

[0081] Specifically, in this step, the two edge fixing parts 10 of the static load test beam can be first fixed to the bracket 31 of the load test platform 30; and then the support part 20 of the static load test beam can be installed on the two edge fixing parts 10 by snapping.

[0082] In addition, the support portion 20 and the two edge fixing portions 10 that are connected by snapping can be directly fixed on the bracket 31 as a whole.

[0083] Step S1002: placing the photovoltaic assembly 40 on the load test platform 30, wherein two opposite frames 41 of the photovoltaic assembly 40 are located on two edge fixing portions 10, and fixing the frames 41 on the edge fixing portions 10;

[0084] Step S1003: performing a static load test on the front surface of the photovoltaic module 40;

[0085] Step S1004 : Turn over the photovoltaic assembly 40 , remove the support portion 20 of the static load test beam, and perform a static load test on the back side of the photovoltaic assembly 40 .

[0086] The above-mentioned step S1003 of performing a static load test on the front of the photovoltaic module 40 and step S1004 of performing a static load test on the back of the photovoltaic module 40 can be directly implemented using the existing photovoltaic module static load test method (such as the MQT16 test item in the commonly used test standard IEC61215), which will not be repeated here.

[0087] The above steps are merely provided to help understand the method, structure, and core concept of the present invention. A person skilled in the art would be able to make improvements and modifications to the present invention without departing from the principles of the present invention, and such improvements and modifications would also fall within the scope of protection of the claims of the present invention.

Claims

1. A static load test beam for photovoltaic modules, characterized in that: include: Two edge fixing parts (10) and a supporting part (20), wherein, The two edge fixing portions (10) are fixed on a bracket (31) of a load test platform (30), and the two edge fixing portions (10) are respectively fixedly connected to two opposite frames (41) of a photovoltaic assembly (40); The support portion (20) is located on the back side of the photovoltaic assembly (40), and there is a gap between the support portion (20) and the back side of the photovoltaic assembly (40); One end of the support portion (20) is detachably connected to one of the edge fixing portions (10); The other end of the support portion (20) is detachably connected to the other edge fixing portion (10).

2. The static load test beam according to claim 1, characterized in that: One end of the support portion (20) is engaged with the side surface of one edge fixing portion (10), and the other end of the support portion (20) is engaged with the side surface of another edge fixing portion (10).

3. The static load test beam according to claim 2, characterized in that: The edge fixing portion (10) comprises: a support block (11), a first fixed connection structure (12) and a second fixed connection structure (13), wherein: The first fixed connection structure (12) is used to fix the support block (11) to the bracket (31); The second fixed connection structure (13) is used to fix the frame of the photovoltaic assembly (40) on the support block (11); The inner side surface of the support block (11) is engaged with one end of the support portion (20).

4. The static load test beam according to claim 3, characterized in that: The first fixed connection structure (12) comprises: a limiting hoop (121), wherein: The limiting hoop (121) is sleeved on the supporting block (11); Both ends of the limiting hoop (121) are fixed on the bracket (31) and are used to press the support block (11) onto the bracket (31).

5. The static load test beam according to claim 3, characterized in that: The second fixed connection structure (13) comprises: a compression block (131), a first assembly hole provided on the compression block (131), a second assembly hole provided on the support block (11), and a connecting member (132), wherein: The first assembly hole and the second assembly hole match each other; The connecting member (132) is assembled in the first assembly hole and the second assembly hole; One end of the compression block (131) is in contact with the upper surface and side surface of the frame (41); The compression block (131), the connecting member (132) and the supporting block (11) cooperate to compress the frame (41); or, The second fixed connection structure (13) comprises: a third assembly hole provided on the support block (11) and a fourth assembly hole provided on the lower surface of the frame (41), wherein: The third assembly hole matches the fourth assembly hole and is fixedly connected by screws.

6. The static load test beam according to claim 2, characterized in that: Both ends of the support portion (20) and the inner side surfaces of the two edge fixing portions (10) are respectively provided with grooves (14) and protrusions (15) matching the grooves, wherein: The groove (14) and the protrusion (15) are engaged with each other.

7. The static load test beam according to claim 6, characterized in that: A first limiting strip (21) is provided in the groove (14); The protrusion (15) is provided with a first limiting groove matching the first limiting strip (21), wherein the first limiting strip (21) and the first limiting groove extend along the assembly direction of the support portion (20); When the protrusion (15) is assembled in the groove (14), the first limiting strip (21) is located in the first limiting groove; or, A second limiting strip (22) is provided on the protrusion (15); A second limiting groove matching the second limiting strip (22) is provided in the groove (14), wherein the second limiting strip (22) and the second limiting groove extend along the assembly direction of the support portion (20); When the protrusion (15) is assembled in the groove (14), the second limiting strip (22) is located in the second limiting groove.

8. The static load test beam according to any one of claims 1 to 6, characterized in that: Of the two edge fixing portions (10), one side is located below the frame (41) and does not extend beyond the inner edge of the frame.

9. A static load testing system for photovoltaic modules, characterized in that: include: A load testing platform (30) and a static load testing beam as claimed in any one of claims 1 to 7, wherein: The two edge fixing portions (10) of the static load test beam are fixed on the bracket (31) of the load test platform (30).

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