Photovoltaic module testing method and photovoltaic profiled steel plate member testing method

Abstract

A photovoltaic module (2) testing method and a photovoltaic profiled steel sheet (1) component testing method are used for testing the step-on performance of the photovoltaic module (2). The photovoltaic module (2) testing method comprises the following steps: installing the photovoltaic module (2) on the profiled steel sheet (1); selecting a first test point (26), a second test point (27), a third test point (28), a fourth test point (29), a fifth test point (2a), a sixth test point (2b), a seventh test point (2c), an eighth test point (2d), a ninth test point (2e) and a tenth test point (2f) on the first surface (21); when the first connecting part (23) is adhesively fixed to the profiled steel sheet (1), the load block (4) applies a preset load to the first test point (26), the second test point (27), the third test point (28), the sixth test point (2b), the seventh test point (2c) and the eighth test point (2d) respectively and maintains for a preset time; when the first connecting part (23) is fixed to the profiled steel sheet (1) through the fixing block, the load block (4) applies a preset load to the first test point (26), thesecond test point (27), the fourth test point (29), the fifth test point (2a), the sixth test point (2b), the seventh test point (2c), the ninth test point (2e) and the tenth test point (2f) respectively and maintains for a preset time, so as to judge whether the step-on performance of the photovoltaic module (2) is qualified.

Description

[0001] This application claims priority to the following Chinese patent applications filed on December 12, 2022: application number 202211599370.2 entitled "Test Method for Photovoltaic Modules"; application number 202211610645.8 entitled "A Photovoltaic Component"; application number 202223341463.3 entitled "A Photovoltaic Component"; and application number 202223361702.1 entitled "A Test Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of photovoltaic module technology, and in particular to a photovoltaic module testing method and a photovoltaic profiled steel sheet component testing method. Background Technology

[0003] Photovoltaic profiled steel sheet components consist of profiled steel sheets and photovoltaic modules mounted on them. After the photovoltaic modules are installed on the profiled steel sheets, stress concentration points exist on the modules. When the photovoltaic modules are subjected to loads, these stress concentration points are prone to damage and microcracks. Therefore, when installing photovoltaic profiled steel sheet components on the building surface, maintenance access channels need to be reserved. During the installation, wiring, testing, repair, and replacement of photovoltaic profiled steel sheet components, operators can move within the maintenance access channels, reducing the risk of damage to the photovoltaic modules caused by operators stepping on them. While providing maintenance access channels facilitates operator movement and installation, it also limits the area available for installing photovoltaic profiled steel sheet components on the building, thus reducing the number of photovoltaic profiled steel sheet components that can be installed on the building.

[0004] In order to increase the number of photovoltaic profiled steel sheet components that can be installed on the building, the design of maintenance access is usually eliminated. That is, during the installation, wiring, testing, maintenance and replacement of photovoltaic modules, operators need to step directly on the photovoltaic modules.

[0005] Existing technologies only emphasize the strong trampling performance of photovoltaic modules, meaning that the risk of damage to photovoltaic modules during installation, wiring, testing, maintenance, and replacement is relatively small. However, there are no established standards for testing the trampling performance of photovoltaic modules installed on profiled steel sheets, which makes it impossible for those skilled in the art to correctly assess the trampling performance of photovoltaic modules installed on profiled steel sheets.

[0006] Application content

[0007] This application provides a testing method for photovoltaic modules and a testing method for photovoltaic profiled steel sheet components, to adapt to the trampling performance of photovoltaic modules under different installation methods.

[0008] This application provides a photovoltaic module testing method for testing the treadability of a photovoltaic module mounted on a profiled steel sheet. The photovoltaic module includes a first connecting portion, a second connecting portion, and a suspended portion distributed along its length or width direction. The first connecting portion is located at the edge of the photovoltaic module and is bonded and fixed to the profiled steel sheet, or the first connecting portion is fixedly connected to the profiled steel sheet by fixing blocks. At least two fixing blocks are used in the length and / or width direction of the photovoltaic module. The second connecting portion is located above the angled portion of the profiled steel sheet and is used to connect to the angled portion. The suspended portion is located between the first connecting portion and the second connecting portion. Between the connecting parts, and / or, the suspended part is located between adjacent second connecting parts, and the edge of the photovoltaic module at the suspended part is called the suspended edge; along the thickness direction of the photovoltaic module, the surface of the photovoltaic module away from the profiled steel plate is called the first surface; the photovoltaic module testing method includes: mounting the photovoltaic module on the profiled steel plate; selecting a first test point, a second test point, a third test point, a fourth test point, a fifth test point, a sixth test point, a seventh test point, an eighth test point, a ninth test point, and a tenth test point on the first surface, wherein one of the first test points and the second test point is located at the corner of the photovoltaic module, and the other is located at the suspended edge, and the fourth test point... In the pilot test and the fifth test point, one is located at the edge of the fixed block, and the other is located between two adjacent fixed blocks along the length of the photovoltaic module. The sixth test point and the first test point are symmetrically arranged along the geometric center of the first surface; the seventh test point and the second test point are symmetrically arranged along the geometric center of the first surface; the eighth test point and the third test point are symmetrically arranged along the geometric center of the first surface; the ninth test point and the fourth test point are symmetrically arranged along the geometric center of the first surface; and the tenth test point and the fifth test point are symmetrically arranged along the geometric center of the first surface. When the first connecting part is bonded and fixed to the profiled steel sheet, The load blocks are placed on the first test point, the second test point, the third test point, the sixth test point, the seventh test point, and the eighth test point, respectively. The load blocks apply a preset load to the photovoltaic module and maintain it for a preset time. When the first connecting part is fixedly connected to the profiled steel plate by the fixing block, the load blocks are placed on the second test point, and the load blocks apply a preset load to the second test point and maintain it for a preset time. The load blocks are placed on the first test point, the second test point, the fourth test point, the fifth test point, the sixth test point, the seventh test point, the ninth test point, and the tenth test point, and the load blocks apply a preset load to the photovoltaic module and maintain it for a preset time.

[0009] In this application, a load block is used to perform a trampling performance test on the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, and tenth test points. This allows for the determination of whether the trampling performance of the photovoltaic module's corners, overhanging edges, the edge positions of the second and first connections, and the midpoint between two adjacent fixing blocks is up to standard. This reduces the risk of damage to the photovoltaic profiled steel sheet components during installation, wiring, testing, repair, and replacement due to the use of substandard photovoltaic modules. The testing process, which symmetrically positions the first and sixth, second and seventh, third and eighth, fourth and ninth, and fifth and tenth test points, improves the accuracy and reliability of the test results. Testing the trampling performance of photovoltaic modules under different installation methods reduces the limitations imposed by trampling performance on the installation method of the photovoltaic module.

[0010] In some embodiments, the load block includes a test surface for abutting against the first surface; when the load block is placed at a corner, the test surface covers the first test point or the second test point, and in the length direction of the photovoltaic module, the minimum distance L1 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L1≤20mm, and in the width direction of the photovoltaic module, the minimum distance L2 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L2≤20mm.

[0011] In some embodiments, in the length direction of the photovoltaic module, the minimum distance L1 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L1≤10mm, and in the width direction of the photovoltaic module, the minimum distance L2 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L2≤10mm.

[0012] In some embodiments, the load block includes a test surface for abutting against the first surface; when the load block is placed at the suspended edge, the test surface covers the first test point or the second test point, the load block is located in the middle of the suspended edge in the width direction of the photovoltaic module, and the minimum distance L3 between the outer contour of the test surface and the suspended edge in the length direction of the photovoltaic module satisfies: 0mm≤L3≤20mm.

[0013] In some embodiments, the minimum distance L3 between the outer contour of the test surface and the suspended edge in the length direction of the photovoltaic module satisfies: 0mm≤L3≤10mm.

[0014] In some embodiments, the load block includes a test surface for abutting against the first surface; when the load block is placed at the third test point, in the length direction of the photovoltaic module, the minimum distance L4 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L4≤20mm, and in the width direction of the photovoltaic module, the minimum distance L5 between the outer contour of the test surface and the edge of the second connection portion satisfies: 0mm≤L5≤20mm.

[0015] In some embodiments, in the length direction of the photovoltaic module, the minimum distance L4 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L4≤10mm, and in the width direction of the photovoltaic module, the minimum distance L5 between the outer contour of the test surface and the edge of the second connection portion satisfies: 0mm≤L5≤10mm.

[0016] In some embodiments, the load block includes a test surface for abutting against the first surface; when the load block is placed at the edge of the fixing block, the test surface covers the fourth test point or the fifth test point. In the length direction of the photovoltaic module, the minimum distance L6 between the outer contour of the test surface and the fixing block satisfies: 0mm≤L6≤20mm. In the width direction of the photovoltaic module, the minimum distance L7 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L7≤20mm.

[0017] In some embodiments, in the length direction of the photovoltaic module, the minimum distance L6 between the outer contour of the test surface and the fixing block satisfies: 0mm≤L6≤10mm, and in the width direction of the photovoltaic module, the minimum distance L7 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L7≤10mm.

[0018] In some embodiments, the load block includes a test surface for abutting against the first surface; when the load block is placed between adjacent fixed blocks in the length and / or width direction of the photovoltaic module, the test surface covers the fourth or fifth test point, and in the width direction of the photovoltaic module, the minimum distance L8 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L8≤20mm.

[0019] In some embodiments, in the width direction of the photovoltaic module, the minimum distance L8 between the outer contour of the test surface and the edge of the photovoltaic module satisfies: 0mm≤L8≤10mm.

[0020] In some embodiments, when the first connecting part is fixedly connected to the profiled steel sheet by a fixing block, the photovoltaic module testing method further includes: placing a load block on a third test point, applying a preset load to the third test point and maintaining it for a preset time, placing a load block on an eighth test point, applying a preset load to the eighth test point and maintaining it for a preset time.

[0021] In some embodiments, the photovoltaic module testing method includes: selecting an eleventh test point on a first surface, the eleventh test point being located at the geometric center of the first surface; placing a load block on the eleventh test point, the load block applying a preset load to the eleventh test point and maintaining it for a preset time.

[0022] In some embodiments, the photovoltaic module testing method includes: selecting a twelfth test point on a first surface, wherein the twelfth test point and the center of the suspended edge are distributed along the length direction of the photovoltaic module, and the number of twelfth test points is one; or, the twelfth test point is symmetrically arranged along the length direction and / or width direction of the photovoltaic module, and / or, the twelfth test point is symmetrically arranged along the geometric center of the first surface; placing a load block on the twelfth test point, wherein the load block applies a preset load to the twelfth test point and maintains it for a preset time.

[0023] In some embodiments, the load block includes a test surface for abutting against the first surface, the area S of the test surface satisfying: 50cm2≤S≤400cm2.

[0024] In some embodiments, the preset load F satisfies: 50KG≤F≤160KG.

[0025] In some embodiments, the preset time T satisfies: 20min≤T.

[0026] In some embodiments, the step of mounting photovoltaic modules on a profiled steel sheet includes: placing purlins on a base surface; fixing the profiled steel sheet to the purlins using a bracket; and fixing the photovoltaic modules to the profiled steel sheet to form a photovoltaic profiled steel sheet component.

[0027] In some embodiments, before the step of mounting the photovoltaic module on the profiled steel plate, the photovoltaic module testing method includes: performing an appearance inspection on the photovoltaic module and recording it as the initial appearance result; after the step of the load block applying a preset load to the photovoltaic module each time and maintaining it for a preset time, the photovoltaic module testing method includes: performing an appearance inspection on the photovoltaic module after loading and recording it as the appearance load result; comparing and analyzing the initial appearance result and the appearance load result, and determining the degree of change in the appearance of the photovoltaic module after loading.

[0028] In some embodiments, before the step of mounting the photovoltaic module on the profiled steel plate, the photovoltaic module testing method includes: performing an EL test on the photovoltaic module and recording it as the initial result of the internal structure; after the step of applying a preset load to all test points of the photovoltaic module by a load block and maintaining it for a preset time, the photovoltaic module testing method includes: performing an EL test on the photovoltaic module after loading and recording it as the internal structure load result; comparing and analyzing the initial result of the internal structure and the internal structure load result, and determining the degree of change in the internal structure of the photovoltaic module after loading.

[0029] In some embodiments, before the step of mounting the photovoltaic module on the profiled steel plate, the photovoltaic module testing method includes: performing a performance test on the photovoltaic module and recording it as the initial performance test result; after the step of applying a preset load to all test points of the photovoltaic module by a load block and maintaining it for a preset time, the photovoltaic module testing method includes: performing a performance test on the photovoltaic module after loading and recording it as the load performance test result; comparing and analyzing the initial performance test result and the load performance test result to determine the degree of change in the performance of the photovoltaic module after loading.

[0030] In some embodiments, performance testing includes one or more of IV testing, insulation testing, and wet leakage current testing.

[0031] In some embodiments, the photovoltaic module testing method includes: taking at least two photovoltaic modules, one of which is a reference module and the other is a test module; placing a load block on a first surface of the test module, the load block applying a preset load to the test module and maintaining it for a preset time; after the load block applies a preset load to all test points of the test module and maintains it for a preset time, the photovoltaic module testing method includes: performing a comprehensive aging test on the reference module and the loaded test modules; performing a defect test on the aged reference module and recording it as a reference aging result, performing a defect test on the aged test modules and recording it as a trampling aging result; and comparing and analyzing the reference aging result and the trampling aging result.

[0032] In some embodiments, defect testing includes one or more of appearance inspection, EL testing, and IV testing; comprehensive aging testing includes one or more of thermal cycling testing, wet-freeze testing, and wet-heat cycling testing.

[0033] The second aspect of this application provides a testing method for photovoltaic profiled steel sheet components. The photovoltaic profiled steel sheet components include profiled steel sheets and photovoltaic modules. The photovoltaic modules are bonded and fixed to the profiled steel sheets, or the photovoltaic modules are fixedly connected to the profiled steel sheets by fixing blocks. The testing method for photovoltaic profiled steel sheet components includes: performing a stepability test on the photovoltaic modules according to the photovoltaic module testing method described in any one of the above claims.

[0034] In this application, by conducting a step-safe performance test on photovoltaic modules, it is possible to determine whether the step-safe performance of photovoltaic modules is qualified, thereby reducing the risk of damage to photovoltaic profiled steel sheet components during installation, wiring, testing, maintenance, and replacement due to the use of unqualified photovoltaic modules.

[0035] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0036] Figure 1This is a schematic diagram of the structure of the photovoltaic profiled steel sheet component provided in this application in one embodiment, wherein the photovoltaic module is bonded and fixed to the profiled steel sheet;

[0037] Figure 2 This is a schematic diagram of the structure of the photovoltaic profiled steel sheet component provided in this application in another embodiment, wherein the photovoltaic module is fixed to the profiled steel sheet by a clamp;

[0038] Figure 3 A schematic diagram of the structure of the trampling test device provided in this application in one embodiment;

[0039] Figure 4 A schematic diagram showing the location of test points on a photovoltaic module provided in this application in one embodiment;

[0040] Figure 5 This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein there are two angled joints and two second connection parts on the photovoltaic module;

[0041] Figure 6 A schematic diagram showing the location of test points on the photovoltaic module provided in this application in another embodiment;

[0042] Figure 7 This application provides a schematic diagram of the location of test points on a photovoltaic module in another embodiment, wherein the photovoltaic module is bonded and fixed to a profiled steel sheet;

[0043] Figure 8 The schematic diagram of the location of the test points on the photovoltaic module provided in this application in another embodiment shows that the photovoltaic module is bonded and fixed to the profiled steel sheet, and the number of angled sections is two.

[0044] Figure 9 This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein the photovoltaic module is bonded and fixed to the profiled steel sheet;

[0045] Figure 10 This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein the photovoltaic module and the profiled steel sheet are fixedly connected by clamps;

[0046] Figure 11 This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein the photovoltaic module and the profiled steel sheet are fixedly connected by a clamp, and the number of angled sections is two;

[0047] Figure 12This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein the photovoltaic module and the profiled steel sheet are fixedly connected by clamps;

[0048] Figure 13 This is a schematic diagram showing the location of the test points on the photovoltaic module provided in this application in another embodiment, wherein the photovoltaic module and the profiled steel sheet are fixedly connected by clamps;

[0049] Figure 14 A schematic diagram of the structure of the trampling test device provided in this application in one embodiment;

[0050] Figure 15 for Figure 14 A front view of the load block in one embodiment;

[0051] Figure 16 for Figure 15 The bottom view;

[0052] Figure 17 for Figure 14 A front view of the load block in another embodiment;

[0053] Figure 18 for Figure 17 Bottom view of the medium load block;

[0054] Figure 19 for Figure 14 Enlarged view of section I;

[0055] Figure 20 A flowchart of one embodiment of the photovoltaic module testing method provided in this application.

[0056] Figure label:

[0057] 1-Corrugated steel sheet; 11-Male rib; 12-Female rib; 13-Base plate; 14-Angle section; 15-Bending section; 151-First bending section; 152-Second bending section; 16-Trench; 2-Photovoltaic module; 21-First surface; 22-Second surface; 23-First connecting part; 24-Second connecting part; 25-Suspended part; 251-Suspended edge; 26-First test point; 27-Second test point; 28-Third test point; 29-Fourth test point; 2a-Fifth test point; 2b-Sixth test point; 2c-Seventh test point; 2d-Eighth test point; 2e-Ninth test point; 2f-Tenth test point Pilot test; 2g - 11th test point; 2h - 12th test point; 3 - Fixture; 4 - Load block; 41 - Test surface; 411 - First test surface; 411a - First surface; 411b - Second surface; 412 - Second test surface; 412a - Third surface; 412b - Fourth surface; 42 - First test body; 421 - First body; 422 - Second body; 43 - Second test body; 431 - Third body; 444 - Fourth body; 5 - Rigid test base; 6 - Frame; 61 - Sliding mating part; 7 - First driving component; 71 - Telescopic rod; 8 - Connector; 9 - Cantilever; 91 - Sliding part.

[0058] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0059] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0060] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0061] In one specific embodiment, the present application will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0062] This application provides a photovoltaic profiled steel sheet component. The photovoltaic profiled steel sheet component refers to an integrated product that connects building photovoltaic glass modules (hereinafter referred to as photovoltaic modules 2) to profiled steel sheets 1 using structural sealant or mechanical means, for generating electricity, and also possesses the functional attributes of a building roof component. The profiled steel sheet 1 refers to a formed steel sheet with a corrugated cross-section formed by roll forming of a coated or plated sheet along its width direction, i.e., as shown in the example. Figure 1 and Figure 2As shown, the photovoltaic profiled steel sheet component includes a profiled steel sheet 1 and photovoltaic modules 2 installed on the profiled steel sheet 1. The profiled steel sheet 1 is fixed to purlins on the target unit by supports to achieve the installation and fixation of the photovoltaic profiled steel sheet component. The target unit includes, but is not limited to, buildings, ground, equipment, etc. The number of purlins is at least two, and three purlins are used as an example below. The distance between adjacent purlins is greater than 1m. Specifically, the distance between adjacent purlins is 1m-2m, including but not limited to 1.1m, 1.2m, 1.3m, 1.4m, 1.5m, 1.6m, 1.7m, 1.8m, 1.9m, 2m, etc. The smaller the purlin spacing, the stronger the step resistance of the photovoltaic modules 2 on the photovoltaic profiled steel sheet component. In this embodiment, the distance between adjacent purlins is 1.5m as an example.

[0063] The photovoltaic profiled steel sheet component includes three perpendicular directions: a first direction X, a second direction Y, and a third direction Z. The first direction X is parallel to the width direction of the photovoltaic module 2, the second direction Y is parallel to the length direction of the photovoltaic module 2, and the third direction Z is parallel to the thickness direction of the photovoltaic module 2. The third direction Z is parallel to the height direction of the profiled steel sheet. Of the first direction X and the second direction Y, one is parallel to the length direction of the profiled steel sheet 1, and the other is parallel to the width direction of the profiled steel sheet 1. This increases the flexibility of the installation direction of the photovoltaic module 2 on the profiled steel sheet 1. The following explanation uses the example of the first direction X being parallel to the width direction of the profiled steel sheet 1 and the second direction Y being parallel to the length direction of the profiled steel sheet 1.

[0064] like Figure 1 , Figure 2 and Figure 3As shown, the profiled steel sheet 1 includes male ribs 11 and female ribs 12 distributed along a first direction X. A base plate 13 is disposed between the male ribs 11 and female ribs 12. The male ribs 11 and the base plate 13, and the female ribs 12 and the base plate 13 are connected by bending portions 15. The bending portion 15 includes a first bending portion 151 extending along the first direction X and a second bending portion 152 extending obliquely. Both the male ribs 11 and female ribs 12 are connected to the first bending portion 151. The other end of the first bending portion 151 is connected to the second bending portion 152, and the second bending portion 152 is away from the first bending portion 151. One end is connected to the base plate 13. An angled flange 14 protruding along the third direction Z is provided between the male rib 11 and the female rib 12. Adjacent base plates 13 are connected via the angled flange 14 along the first direction X. The number of angled flanges 14 is one, or multiple angled flanges 14 are spaced apart along the first direction X. The angled flange 14 divides the profiled steel sheet 1 into multiple grooves 16. Specifically, the angled flange 14, a portion of the base plate 13, and the male rib 11 form a groove 16; the angled flange 14, a portion of the base plate 13, and the female rib 12 form a groove 16; and two adjacent angled flanges 14 and a portion of the base plate 13 form a groove 16. In the first direction X, the male rib 11 of the profiled steel sheet 1 and the adjacent female rib 12 of the profiled steel sheet 1 are fixedly connected by a locking mechanism to form a locking structure, thereby achieving the connection and fixation of multiple profiled steel sheets 1.

[0065] In one embodiment, such as Figure 1 As shown, in the first direction X, the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1 by structural sealant to simplify the connection structure between the photovoltaic module 2 and the profiled steel sheet 1; the structural sealant extends along the second direction Y, and one end of a photovoltaic module 2 is fixed to the profiled steel sheet 1 by a strip of structural sealant, or one end of a photovoltaic module 2 is fixed to the profiled steel sheet 1 by multiple strips of structural sealant, that is, multiple strips of structural sealant are distributed at intervals along the second direction Y.

[0066] The photovoltaic module 2 is bonded and fixed to the first bend 151, that is, the photovoltaic module 2 covers the top of the angled section 14. In addition, the photovoltaic module 2 can also be bonded and fixed to the angled section 14 to increase the connection stability between the photovoltaic module 2 and the profiled steel sheet 1. When there are multiple angled sections 14, the photovoltaic module 2 can be bonded and fixed to one angled section 14 or multiple angled sections 14 to increase the bonding flexibility.

[0067] In another embodiment, the photovoltaic module 2 is fixed to the profiled steel sheet 1 by fixing blocks. The fixing blocks can be pressure blocks or clamps 3. The fixing blocks are distributed along the first direction X and / or the second direction Y at the edge positions of the photovoltaic module 2, that is, both ends of the photovoltaic module 2 in the length direction are fixedly connected to the profiled steel sheet 1 by the fixing blocks, and / or, both ends of the photovoltaic module 2 in the width direction are fixedly connected to the profiled steel sheet 1 by the fixing blocks. When the fixing block is a pressure block, the pressure block is fixedly connected to the profiled steel sheet 1, and the photovoltaic module 2 is fixed by the pressure block; or, the photovoltaic module 2 is clamped and fixed by the pressure block and the profiled steel sheet 1. When the fixing block is a clamp 3, such as... Figure 2 As shown, the clamp 3 is fixed to the locking edge structure and / or the angled section 14, and the clamp 3 clamps and fixes the photovoltaic module 2. The following examples all use the fixing block as the clamp 3, the clamp 3 clamping both ends of the photovoltaic module 2 along the first direction X, and the clamp 3 being fixed to the locking edge structure. When the clamp 3 is fixed to the locking edge structure, there is a gap between the photovoltaic module 2 and the first bending part 151 in the third direction Z. When the photovoltaic module 2 is subjected to downward pressure, the photovoltaic module 2 will bend and deform downward. In one embodiment, when the photovoltaic module 2 bends and deforms downward, there is still a gap between the photovoltaic module 2 and the first bending part 151. In another embodiment, when the photovoltaic module 2 bends and deforms downward, the photovoltaic module 2 abuts against the first bending part 151, that is, the first bending part 151 can support the photovoltaic module 2 to reduce the degree of deformation of the photovoltaic module 2. In addition, when the clamp 3 is fixed to the locking edge structure, there is a preset distance between the photovoltaic module 2 and the angled sag part 14, or the photovoltaic module 2 abuts against the angled sag part 14, or the photovoltaic module 2 is bonded and fixed to the angled sag part 14.

[0068] like Figure 1 and Figure 2 As shown, the photovoltaic module 2 includes a first connecting portion 23, a second connecting portion 24, and a suspended portion 25. The first connecting portion 23 is located at the edge of the photovoltaic module 2 and is used for fixed connection with the profiled steel sheet 1. The second connecting portion 24 is located above the angled portion 14 and is used for fixed connection or abutment with the angled portion 14. In the first direction X, the suspended portion 25 is located between the first connecting portion 23 and the second connecting portion 24, and / or, the suspended portion 25 is located between adjacent second connecting portions 24. Specifically, as... Figure 1 As shown, when the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, the part where the photovoltaic module 2 is bonded and fixed to the first bending part 151 is the first connecting part 23; as Figure 2 As shown, when the photovoltaic module 2 and the profiled steel sheet 1 are fixedly connected by the clamp 3, the part of the photovoltaic module 2 that is clamped and fixed by the clamp 3 is the first connecting part 23.

[0069] like Figure 1 and Figure 2As shown, the photovoltaic module 2 includes a first surface 21 and a second surface 22 arranged opposite each other along the third direction Z. The first surface 21 is located on the side of the photovoltaic module 2 facing the sunlight. During the installation, wiring, testing, maintenance, and replacement of the photovoltaic profiled steel sheet components, the operator needs to step on the first surface 21 of the photovoltaic module 2. When the operator steps on the corner of the photovoltaic module 2, the edge of the corner of the photovoltaic module 2 will be subjected to greater stress, that is, the edge of the corner of the photovoltaic module 2 is the stress concentration point of the photovoltaic module 2. When the operator steps on the suspended part 25 of the photovoltaic module 2, the deformation of the middle position of the suspended part 25 is the greatest, that is, the middle position of the suspended part 25 is the stress concentration point of the photovoltaic module 2.

[0070] When the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, such as Figure 1 As shown, when an operator steps on the photovoltaic module 2, the edge of the second connection part 24 will be subjected to greater stress, that is, the edge of the second connection part 24 of the photovoltaic module 2 is the stress concentration point of the photovoltaic module 2.

[0071] When the photovoltaic module 2 is clamped and fixed by the clamp 3, such as Figure 2 As shown, the edge of the first connecting part 23 and the middle position of the two adjacent clamps 3 are stress concentration points of the photovoltaic module 2. Specifically, when the distance between the photovoltaic module 2 and the profiled steel sheet 1 in the third direction Z is large, the photovoltaic module 2 will bend downward when the operator steps on it, but the photovoltaic module 2 will not come into contact with the angled part 14. When the distance between the photovoltaic module 2 and the profiled steel sheet 1 in the third direction Z is small, the photovoltaic module 2 will bend downward when the operator steps on it and come into contact with the angled part 14. At this time, the edge of the second connecting part 24 will be subjected to greater stress, that is, the edge of the second connecting part 24 of the photovoltaic module 2 is the stress concentration point of the photovoltaic module 2. When the second connecting part 24 of the photovoltaic module 2 is bonded and fixed to the angled part 14, the edge of the second connecting part 24 is the stress concentration point of the photovoltaic module 2.

[0072] When an operator steps on the first surface 21 of the photovoltaic module 2, there is a risk of hidden cracks and damage at the stress concentration points mentioned above. Therefore, before the photovoltaic module 2 is put into mass production and use, it is necessary to conduct a step test on the photovoltaic module 2 in order to assess whether the step performance of the photovoltaic module 2 after installation on the profiled steel plate 1 is qualified, thereby reducing the risk of damage to the photovoltaic profiled steel plate components during installation, wiring, testing, maintenance and replacement due to the use of unqualified photovoltaic modules 2.

[0073] Specifically, such as Figures 4 to 13As shown, test points are provided on the first surface 21. During the test of the treadability performance of the photovoltaic module 2, a load block 4 needs to be placed on the test points so that at least part of the test surface 41 of the load block 4 is in contact with the first surface 21. That is, a preset load is applied to the test points by the load block 4 and maintained for a preset time to simulate the force on the photovoltaic module 2 when an operator steps on the first surface 21 at rest during work, so as to increase the accuracy and reliability of the test results.

[0074] When the load block 4 is placed on the test point, a portion of the test surface 41 abuts against the first surface 21, that is, the area of ​​the overlapping portion of the test surface 41 and the first surface 21 is smaller than the area of ​​the test surface 41, so that a part of the load block 4 is in a suspended state; or, the entire test surface 41 abuts against the first surface 21, that is, the area of ​​the overlapping portion of the test surface 41 and the first surface 21 is equal to the area of ​​the test surface 41.

[0075] Specifically, such as Figures 4 to 8 As shown, the test points include stress concentration points, which are located at stress concentration locations on the photovoltaic module 2. When the photovoltaic module 2 is installed on the profiled steel plate 1, the contact positions of the photovoltaic module 2 with other structures and the stress concentration positions are different due to different installation methods. Taking the installation method of this application as an example, the stress concentration points include at least a first test point 26 and a second test point. Of the first test point 26 and the second test point 27, one is located at the corner of the photovoltaic module 2, and the edge of the photovoltaic module 2 at the suspended part 25 is the suspended edge 251. The other is located at the middle position of the suspended edge 251. In this embodiment of the application, the first test point 26 is located at the corner of the photovoltaic module 2 and the second test point 27 is located at the middle position of the suspended edge 251 for illustration.

[0076] The stress concentration points also include a sixth test point 2b and a seventh test point 2c. In the first direction X and / or the second direction Y, the sixth test point 2b is symmetrically arranged with respect to the first test point 26, and / or the sixth test point 2b and the first test point 26 are centrally symmetrically arranged with respect to the geometric center of the first surface 21. In the first direction X and / or the second direction Y, the seventh test point 2c is symmetrically arranged with respect to the second test point 27, and / or the seventh test point 2c and the second test point 27 are centrally symmetrically arranged with respect to the geometric center of the first surface 21.

[0077] In this embodiment, a sixth test point 2b is set, that is, during the test, at least two corners of the photovoltaic module 2 are subjected to a stepability test to increase the accuracy and reliability of the stepability test results of the corners. A seventh test point 2c is set, that is, during the test, at least two suspended edges 251 of the photovoltaic module 2 are subjected to a stepability test to increase the accuracy and reliability of the stepability test results of the suspended edges 251.

[0078] When the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, such as Figures 4 to 8 As shown, the stress concentration point includes a third test point 28, which is located at the edge of the second connection portion 24. The test point also includes an eighth test point 2d; in the first direction X and / or the second direction Y, the eighth test point 2d is symmetrically arranged with respect to the third test point 28, and / or, the eighth test point 2d and the third test point 28 are centrally symmetrically arranged with respect to the geometric center of the first surface 21.

[0079] In this embodiment, an eighth test point 2d is set, that is, at least two locations on the edge of the second connecting part 24 are tested for treadability during the test, so as to increase the accuracy and reliability of the treadability test results of the second connecting part 24.

[0080] When the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 by the clamp 3, such as Figure 12 and Figure 13 As shown, the stress concentration points include the fourth test point 29 and the fifth test point 2a. Of the fourth test point 29 and the fifth test point 2a, one is located at the edge of the clamp 3, that is, the edge of the first connecting part 23, in the second direction Y, and the other is located in the middle of two adjacent clamps 3. In this embodiment of the application, the first test point 26 is located at the corner, the second test point 27 is located in the middle of the suspended edge 251, the fourth test point 29 is located at the edge of the first connecting part 23, and the fifth test point 2a is located in the middle of two adjacent clamps 3 as an example for illustration.

[0081] The stress concentration points also include a ninth test point 2e and a tenth test point 2f; in the first direction X and / or the second direction Y, the ninth test point 2e is symmetrically arranged with respect to the fourth test point 29, and / or, the ninth test point 2e and the fourth test point 29 are centrally symmetrically arranged with respect to the geometric center of the first surface 21; in the first direction X and / or the second direction Y, the tenth test point 2f is symmetrically arranged with respect to the fifth test point 2a, and / or, the tenth test point 2f and the fifth test point 2a are centrally symmetrically arranged with respect to the geometric center of the first surface 21.

[0082] Furthermore, when the photovoltaic module 2 has a second connecting portion 24, that is, when the photovoltaic module 2 can abut against the angled portion 14, or when the photovoltaic module 2 is bonded and fixed to the angled portion 14, the stress concentration point may also include a third test point 28 located at the edge of the second connecting portion 24; the stress concentration point also includes an eighth test point 2d, which is symmetrically arranged with respect to the third test point 28 in the first direction X and / or the second direction Y, and / or the eighth test point 2d and the third test point 28 are centrally symmetrically arranged with respect to the geometric center of the first surface 21.

[0083] In this embodiment, setting the ninth test point 2e and the tenth test point 2f can increase the accuracy and reliability of the test results of the treadability at the edge position of the clamp 3 and the middle position of two adjacent clamps 3.

[0084] In this embodiment, one end of the photovoltaic module 2 is clamped and fixed by at least two clamps 3 in the second direction Y. Specifically, the first connecting portion 23 includes at least a first part and a second part for connecting with the clamps 3. The fourth test point 29 is located at the edge of the first part, and / or, the fourth test point 29 is located at the edge of the second part. In actual testing, one or more fourth test points 29 may be provided. Similarly, when one end of the photovoltaic module 2 is clamped and fixed by three or more clamps 3, the clamps 3 include at least a first clamp 3, a second clamp 3, and a third clamp 3 distributed along the second direction Y. The fifth test point 2a is located at the midpoint between the first clamp 3 and the second clamp 3, and / or, the fifth test point 2a is located at the midpoint between the second clamp 3 and the third clamp 3. In other words, one or more fifth test points 2a may be provided. In this embodiment, providing at least one fourth test point 29 and at least one fifth test point 2a is beneficial for improving the accuracy and reliability of the test results.

[0085] In the two embodiments above, such as Figures 4 to 13 As shown, in addition to the stress concentration location, the test points on the first surface 21 also include an eleventh test point 2g, which is located at the geometric center of the first surface 21.

[0086] In addition, such as Figures 4 to 13 As shown, the test points also include a twelfth test point 2h, which is distributed along the second direction Y with the center of the suspended edge 251; the number of twelfth test points 2h is one, in which case the twelfth test point 2h is located in the middle position of the suspended part 25; or, the twelfth test points 2h are symmetrically distributed along the first direction X and / or the second direction Y, and / or, the twelfth test points 2h are centrally symmetrically arranged with respect to the geometric center of the first surface 21. When the number of twelfth test points 2h in the second direction Y is two or more, the twelfth test points 2h are uniformly distributed in the suspended part 25. In this embodiment, as... Figures 4 to 13 As shown, there are four twelfth test points 2h, and these four twelfth test points 2h are symmetrically distributed around the eleventh test point 2g.

[0087] The photovoltaic module 2 includes a first corner, a second corner, a third corner, and a fourth corner. The first corner and the second corner, the third corner and the fourth corner are arranged opposite each other along a first direction X, and the first corner and the third corner, the second corner and the fourth corner are arranged opposite each other along a second direction Y. At least one first test point 26 is provided on each of the first corner, the second corner, the third corner, and the fourth corner. This means that during testing, one or more step-ability tests will be performed on one of the first corner, the second corner, the third corner, and the fourth corner to improve the accuracy of the test results. Similarly, the photovoltaic module 2 includes multiple suspended edges 251, and at least one second test point 27 is provided on at least one suspended edge 251. This means that during testing, at least one of the multiple suspended edges 251 will be subjected to at least one step-ability test to improve the accuracy of the test results. In some embodiments, when multiple step-ability tests are performed on a corner or a suspended edge 251 of the photovoltaic module 2, the test points are different each time.

[0088] When the load block 4 is placed on the first test point 26, the test surface 41 covers the first test point 26, and the minimum distance between the outer contour of the test surface 41 and the edge of the photovoltaic module 2 in the second direction Y is L1, 0mm≤L1≤20mm. Specifically, L1 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.; the minimum distance between the outer contour of the test surface 41 and the edge of the photovoltaic module 2 in the first direction X is L2, 0mm≤L2≤20mm. Specifically, L2 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.

[0089] In this embodiment, if L1 > 20mm and / or L2 > 20mm, the distance between the placement position of the load block 4 and the corner of the photovoltaic module 2 is relatively large. That is, the placement position of the load block 4 deviates from the stress concentration position of the photovoltaic module 2, reducing the accuracy of the test results. Therefore, 0mm ≤ L1 ≤ 20mm and 0mm ≤ L2 ≤ 20mm increase the accuracy and reliability of the test results of the photovoltaic module 2's ability to be stepped on.

[0090] Among them, 0mm≤L1≤10mm, where L1 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.; 0mm≤L2≤10mm, where L2 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., in order to further improve the accuracy and reliability of the test results of the treadability performance of photovoltaic module 2.

[0091] When the load block 4 is placed on the second test point 27, the test surface 41 covers the second test point 27, and the minimum distance between the outer contour of the test surface 41 and the suspended edge 251 in the second direction Y is L3, 0mm≤L3≤20mm, and L3 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.

[0092] In this embodiment, if L3 > 20mm, the distance between the placement position of the load block 4 and the suspended edge 251 is relatively large, meaning the placement position of the load block 4 deviates from the stress concentration position of the photovoltaic module 2, reducing the accuracy of the test results. Therefore, 0mm ≤ L3 ≤ 20mm increases the accuracy and reliability of the test results for the treadability performance of the photovoltaic module 2.

[0093] Among them, 0mm≤L3≤10mm, and L3 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., to further improve the accuracy and reliability of the test results of the treadability performance of photovoltaic module 2.

[0094] When the load block 4 is placed on the third test point 28, the test surface 41 covers the third test point 28, and the minimum distance between the outer contour of the test surface 41 and the edge of the photovoltaic module 2 in the second direction Y is L4, 0mm≤L4≤20mm. Specifically, L4 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.; the minimum distance between the outer contour of the test surface 41 and the edge of the second connection part 24 in the first direction X is L5, 0mm≤L5≤20mm. Specifically, L5 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.

[0095] In this embodiment, if L4 > 20mm and / or L5 > 20mm, the distance between the placement position of the load block 4 and the edge of the second connecting part 24 is relatively large. That is, the placement position of the load block 4 deviates from the stress concentration position of the photovoltaic module 2, reducing the accuracy of the test results. Therefore, 0mm ≤ L4 ≤ 20mm and 0mm ≤ L5 ≤ 20mm increase the accuracy and reliability of the test results of the photovoltaic module 2's ability to be stepped on.

[0096] Among them, 0mm≤L4≤10mm, where L4 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.; 0mm≤L5≤10mm, where L5 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., in order to further improve the accuracy and reliability of the test results of the treadability performance of photovoltaic module 2.

[0097] When the load block 4 is placed on the fourth test point 29, the test surface 41 covers the fourth test point 29. The minimum distance between the outer contour of the test surface 41 and the fixture 3 in the second direction Y is L6, 0mm≤L6≤20mm. Specifically, L6 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc. The minimum distance between the outer contour of the test surface 41 and the edge of the photovoltaic module 2 in the first direction X is L7, 0mm≤L7≤20mm. Specifically, L7 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc.

[0098] In this embodiment, if L6 > 20mm and / or L7 > 20mm, the distance between the placement position of the load block 4 and the edge of the second connecting part 24 is relatively large. That is, the placement position of the load block 4 deviates from the stress concentration position of the photovoltaic module 2, reducing the accuracy of the test results. Therefore, 0mm ≤ L6 ≤ 20mm and 0mm ≤ L7 ≤ 20mm increase the accuracy and reliability of the test results of the photovoltaic module 2's ability to be stepped on.

[0099] Among them, 0mm≤L6≤10mm, where L6 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.; 0mm≤L7≤10mm, where L7 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., in order to further improve the accuracy and reliability of the test results of the treadability performance of photovoltaic module 2.

[0100] When the load block 4 is placed on the fifth test point 2a, the test surface 41 covers the fifth test point 2a, and the minimum distance between the outer contour of the test surface 41 and the edge of the photovoltaic module 2 in the first direction X is L8, 0mm≤L8≤20mm. Specifically, L8 can be equal to 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc., to improve the accuracy and reliability of the test results of the treadability performance of the photovoltaic module 2.

[0101] Among them, 0mm≤L8≤10mm, and L8 can be equal to 0mm, 1mm, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., to further improve the accuracy and reliability of the test results of the treadability performance of photovoltaic module 2.

[0102] When the load block 4 is placed on the eleventh test point 2g, the test surface 41 covers the eleventh test point 2g, and the geometric center of the test surface 41 is 0mm-20mm away from the eleventh test point 2g in the first direction X and / or the second direction Y. That is, in the first direction X and / or the second direction Y, the geometric center of the test surface 41 can be located on the left or right side of the eleventh test point 2g, so as to reduce the placement accuracy of the load block 4 and facilitate shortening the test cycle of the photovoltaic module 2's trampling performance.

[0103] When the load block 4 is placed on the twelfth test point 2h, the test surface 41 covers the twelfth test point 2h, and the geometric center of the test surface 41 is 0mm-20mm away from the twelfth test point 2h in the first direction X and / or the second direction Y. Specifically, the distance between the geometric center of the test surface 41 and the twelfth test point 2h in the first direction X and / or the second direction Y can be 0mm, 2.5mm, 5mm, 7.5mm, 10mm, 12.5mm, 15mm, 17.5mm, 20mm, etc., to improve the accuracy and reliability of the test results of the photovoltaic module 2's ability to be stepped on.

[0104] Based on the photovoltaic profiled steel sheet components described in any of the above embodiments, this application provides a trampling test device, such as... Figure 14 As shown, including the load block 4 described in any of the above embodiments, the area S of the test surface 41 satisfies: 50 cm². 2 ≤S≤400cm 2 Specifically, the area of ​​test surface 41 can be 50 cm². 2 70cm 2 79cm 2 90cm 2 110cm 2 130cm 2 150cm 2 157cm 2 170cm 2 190cm 2 210cm 2 230cm 2 250cm 2 270cm 2 290cm 2 310cm 2314cm 2 330cm 2 350cm 2 370cm 2 390cm 2 400cm 2 wait.

[0105] In this embodiment, if the area of ​​the test surface 41 is small, i.e., S < 50 cm 2 When a preset load is applied to the photovoltaic module 2 through the test surface 41, the pressure on the photovoltaic module 2 is relatively large, which differs significantly from the pressure applied to the photovoltaic module 2 by the operator during actual installation, thus reducing the reliability of the test results. Furthermore, if the area of ​​the test surface 41 is large, i.e., S > 400 cm², the test results may be affected. 2 When a preset load is applied to the photovoltaic module 2 through the test surface 41, the pressure on the photovoltaic module 2 is relatively small, which differs significantly from the pressure applied to the photovoltaic module 2 by the operator during actual installation, reducing the reliability of the test results. Therefore, 50cm 2 ≤S≤400cm 2 This increases the accuracy and reliability of the trampling test results, thereby improving the performance of the trampling test equipment. In this embodiment, 50cm... 2 ≤S≤105cm 2 At that time, with S = 79cm 2 For example, the load block 4 simulates the operator's foot contacting the first surface 21, that is, simulating the operator standing on tiptoe on the photovoltaic module 2; 150cm 2 <S≤200cm 2 At that time, with S = 157cm 2 For example, load block 4 simulates an operator standing on one leg on photovoltaic module 2; 200cm 2 <S≤400cm 2 At that time, with S = 314cm 2 For example, load block 4 simulates an operator standing on photovoltaic module 2 with both feet.

[0106] In one embodiment, such as Figure 15 and Figure 16 As shown, the test surface 41 is a complete, continuous plane. The outline shape of the test surface 41 can be circular, rectangular, triangular, pentagonal, or other deformed structures. Alternatively, the outline shape of the test surface 41 can be similar to the outline shape of the shoe sole to increase the accuracy and reliability of the test results of the stepping test equipment. In one embodiment, the outline shape of the test surface 41 is a complete shoe sole outline to increase the matching degree between the outline shape of the test surface 41 and the outline shape of the shoe sole; in another embodiment, the outline shape of the test surface 41 is similar to the outline shape of the ball of the foot or the heel of the shoe sole.

[0107] In another embodiment, such as Figure 17 and Figure 18 As shown, the load block 4 includes a first test body 42 and a second test body 43 arranged opposite to each other along the first direction X. The test surface 41 is formed by the combination of the first test surface 411 and the second test surface 412. The first test surface 411 is located on the first test body 42, and the second test surface 412 is located on the second test body 43. The first test body 42 applies a load to the photovoltaic module 2 through at least a portion of the first test surface 411, and the second test body 43 applies a load to the photovoltaic module 2 through at least a portion of the second test surface 412. That is, the first test body 42 and the second test body 43 simulate the operator standing on the first surface 21 with both feet, so that the force situation of the photovoltaic module 2 during the test matches the force situation of the photovoltaic module 2 when the operator stands on the first surface 21 with both feet, thereby improving the accuracy and reliability of the test results of the stepping test equipment.

[0108] Specifically, such as Figure 17 As shown, along the first direction X, the distance L9 between the geometric center of the first test surface 411 and the geometric center of the second test surface 412 satisfies: 100mm≤L9≤500mm. Specifically, L9 can be equal to 100mm, 150mm, 200mm, 260mm, 300mm, 318mm, 350mm, 400mm, 439mm, 450mm, 500mm, etc.

[0109] In this embodiment, if the distance between the geometric center of the first test surface 411 and the geometric center of the second test surface 412 is large or small (i.e., L9 > 500 mm or L9 < 100 mm), the distance between the first test body 42 and the second test body 43 in the first direction X differs significantly from the distance between the operator's feet, leading to large deviations in the test results of the foot-stepping test equipment. Therefore, 100 mm ≤ L9 ≤ 500 mm ensures that the distance between the first test body 42 and the second test body 43 in the first direction X matches the distance between the operator's feet, thereby improving the accuracy and reliability of the test results of the foot-stepping test equipment.

[0110] In one embodiment, the first test surface 411 is a continuous and complete plane, and the second test surface 412 is a continuous and complete plane.

[0111] The outline shapes of the first test surface 411 and the second test surface 412 are circular, rectangular, elliptical, or other shapes to facilitate the processing of the load block 4 and reduce its processing cost. Alternatively, the outline shapes of the first test surface 411 and the second test surface 412 are similar to the outline shape of the operator's shoe sole to increase the accuracy and reliability of the test results of the stepping test equipment. Alternatively, the outline shapes of the first test surface 411 and the second test surface 412 are complete shoe sole outlines to increase the matching degree between the outline shapes of the first test surface 411 and the second test surface 412 and the shoe sole outline. Alternatively, the outline shapes of the first test surface 411 and the second test surface 412 are similar to the outline shape of the forefoot or heel of the shoe sole.

[0112] In another embodiment, the first test surface 411 includes a first surface 411a and a second surface 411b spaced apart along the second direction Y, and the first test surface 411 is formed by combining the first surface 411a and the second surface 411b. The second test surface 412 includes a third surface 412a and a fourth surface 412b spaced apart along the second direction Y, and the second test surface 412 is formed by combining the third surface 412a and the fourth surface 412b, so as to reduce the processing cost of the load block 4.

[0113] The outline shapes of the first surface 411a and the second surface 411b are circular, rectangular, elliptical, or other shapes, and the outline shapes of the third surface 412a and the fourth surface 412b are circular, rectangular, elliptical, or other shapes, in order to reduce the material required for processing the load block 4, thereby reducing the processing cost of the load block 4; or, the outline shape of the first surface 411a is similar to the outline shape of the forefoot of the shoe sole, the outline shape of the second surface 411b is similar to the outline shape of the heel of the shoe sole, the outline shape of the third surface 412a is similar to the outline shape of the forefoot of the shoe sole, and the outline shape of the fourth surface 412b is similar to the outline shape of the heel of the shoe sole, in order to improve the accuracy of the test results.

[0114] In this embodiment of the application, the first test surface 411 includes a first surface 411a and a second surface 411b spaced apart along the second direction Y, wherein the outline shapes of the first surface 411a and the second surface 411b are circular; the second test surface 412 includes a third surface 412a and a fourth surface 412b spaced apart along the second direction Y, wherein the outline shapes of the third surface 412a and the fourth surface 412b are circular. That is, as... Figure 17 and Figure 18As shown, the first test body 42 includes a first body 421 and a second body 422 disposed opposite to each other along the second direction Y, with a first surface 411a disposed on the first body 421 and a second surface 411b disposed on the second body 422; the second test body 43 includes a third body 431 and a fourth body 432 disposed opposite to each other along the second direction Y, with a third surface 412a disposed on the third body 431 and a fourth surface 412b disposed on the fourth body 432.

[0115] Specifically, such as Figure 18 As shown, the length L10 of the first test surface 411 in the third direction Y satisfies: 100mm≤L10≤400mm, that is, the maximum distance between the outer contour of the first surface 411a and the outer contour of the second surface 411b in the second direction Y is between 100mm and 400mm. Specifically, the maximum distance between the outer contour of the first surface 411a and the outer contour of the second surface 411b in the second direction Y can be 100mm, 146mm, 150mm, 200mm, 250mm, 259mm, 300mm, 350mm, 372mm, 400mm, etc. And / or, the length L11 of the second test surface 412 in the second direction Y satisfies: 100mm≤L11≤400mm, that is, the maximum distance between the outer contour of the third surface 412a and the outer contour of the fourth surface 412b in the second direction Y is between 100mm and 400mm. Specifically, the maximum distance between the outer contour of the third surface 412a and the outer contour of the fourth surface 412b in the third direction Y can be 100mm, 146mm, 150mm, 200mm, 250mm, 259mm, 300mm, 350mm, 372mm, 400mm, etc.

[0116] In this embodiment, if the lengths of the first test surface 411 and the second test surface 412 in the second direction Y are both large (i.e., L10 > 400mm, L11 > 400mm), or if the lengths of the first test surface 411 and the second test surface 412 in the second direction Y are both small (i.e., L10 < 100mm, L11 < 100mm), the outline dimensions of the first test surface 411 and the second test surface 412 differ significantly from the outline dimensions of the operator's shoe sole, leading to large deviations in the test results of the footstep testing equipment. Therefore, 100mm ≤ L10 ≤ 400mm and 100mm ≤ L11 ≤ 400mm ensure that the outline dimensions of the first test surface 411 and the second test surface 412 in the second direction Y match the outline dimensions of the operator's shoe sole, thereby improving the accuracy and reliability of the test results of the footstep testing equipment.

[0117] In any of the above embodiments, the preset load applied by the load block 4 to the first surface 21 is F, where 50KG≤F≤160KG. Specifically, F can be equal to 50KG, 60KG, 66KG, 70KG, 80KG, 90KG, 100KG, 110KG, 120KG, 122KG, 130KG, 140KG, 150KG, 160KG, etc.

[0118] When an operator stands on the surface of the photovoltaic module 2 for installation, there are situations where the operator carries installation tools and moves the photovoltaic module 2. If the preset load is too small, i.e., F < 50KG, the reliability of the test results is poor; if the preset load is too large, i.e., F > 160KG, it increases the cost of the trampling test equipment. Therefore, in this embodiment, 50KG ≤ F ≤ 160KG can improve the reliability of the test results of the trampling test equipment and reduce the cost of the trampling test equipment.

[0119] In any of the above embodiments, a pad (not shown in the figure) is installed on the test surface 41. During the test, the test surface 41 and the photovoltaic module 2 are in contact through the pad, which reduces the risk of damage to the photovoltaic module 2 and the test surface 41 caused by direct contact between the test surface 41 and the surface of the photovoltaic module 2. At the same time, the pad can simulate the operator's insole to improve the accuracy and reliability of the test results.

[0120] The gasket can be made of materials with good elastic deformation capabilities, such as silicone or plastic. This application does not impose any special restrictions on the specific material of the gasket.

[0121] like Figure 14 As shown, the trampling test equipment includes a rigid test base 5. In one embodiment, before the trampling test equipment performs a trampling performance test on the photovoltaic module 2, the photovoltaic module 2 is placed directly on the rigid test base 5 to shorten the installation cycle of the photovoltaic module 2 and the trampling test equipment, thereby shortening the test cycle of the trampling performance of the photovoltaic module 2.

[0122] In another embodiment, such as Figure 14 As shown, before the photovoltaic module 2 undergoes a trampling performance test using the trampling test equipment, the photovoltaic module 2 is first fixedly connected to the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component. Then, the photovoltaic profiled steel sheet component is placed on the rigid test base 5. At this time, the rigid test base 5 is used to support the profiled steel sheet 1, thereby improving the accuracy and reliability of the test results from the trampling test equipment. In other embodiments, the photovoltaic module 2 can also be fixed to other supporting structures first, and then placed on the rigid test base 5 for trampling performance testing. In this embodiment, the rigid test base 5 is used to support the photovoltaic profiled steel sheet component.

[0123] In one embodiment, the load block 4 is a mass block such as a weight or barbell, meaning there is no connection between the load block 4 and the rigid test base 5. During the test, the photovoltaic profiled steel sheet component is first fixed to the rigid test base 5, and then the load block 4 is manually placed on the test point of the photovoltaic module 2. In this embodiment, setting the load block 4 as a mass block such as a weight or barbell improves the replaceability of the load block 4, allowing the trampling test equipment to perform multiple sets of tests on the photovoltaic module 2 using load blocks 4 of different weights, thereby improving the accuracy of the test results of the trampling test equipment.

[0124] In another implementation, such as Figure 14 As shown, the trampling test equipment also includes a frame 6 extending along a third direction (Z). The frame 6 is mounted on a rigid test base 5. A load block 4 is connected to the frame 6, and the load block 4 can move along a third direction (Z). In this embodiment, the load block 4 is connected to the frame 6, and the load block 4 can move along a third direction (Z), reducing the risk of injury from manually handling the load block 4 during the test, thereby improving the safety of the trampling test equipment.

[0125] Specifically, the trampling test equipment also includes a drive component, and the load block 4 is connected to the frame 6 through the drive component; the drive component can drive the load block 4 to move along the first direction X and / or the second direction Y.

[0126] In this embodiment, the load block 4 is moved by a driving component, which simplifies the operator's operation during the test and improves the user experience. The driving component can drive the load block 4 to move along the first direction X and / or the second direction Y, increasing the flexibility of the installation position of the load block 4 on the frame 6. This facilitates the load block 4 to test different test points of the photovoltaic module 2, thereby improving the working performance of the step test equipment. At the same time, driving the load block 4 by the driving component helps to automate the step test equipment, thereby simplifying the test process and shortening the test cycle.

[0127] Among them, such as Figure 14 As shown, the drive assembly includes a first drive member 7, a second drive member (not shown in the figure), and a third drive member (not shown in the figure). The load block 4 is mounted on the frame 6 via the first drive member 7. The first drive member 7 is used to drive the load block 4 to move in the third direction Z. The second drive member and the third drive member are used to drive the first drive member 7 to move in the first direction X and the second direction Y, thereby driving the load block 4 to move along the first direction X and the second direction Y.

[0128] The first driving component 7 is provided with a telescopic rod 71, and the load block 4 is installed on the telescopic rod 71 to facilitate the movement of the load block 4 in the third direction Z.

[0129] Among them, the first driving component 7, the second driving component, and the third driving component are driving motors, and the telescopic rod 71 is the telescopic output shaft of the driving motor, so as to simplify the structure of the first driving component 7, the second driving component, and the third driving component.

[0130] In addition, the trampling test equipment also includes a connector 8. The load block 4 and the telescopic rod 71 are connected by the connector 8 to reduce the size of the telescopic rod 71 and the load block 4, reduce the processing cost of the load block 4, and improve the structural strength of the first drive component 7 and the load block 4, thereby extending the service life of the first drive component 7 and the load block 4.

[0131] like Figure 14 As shown, the trampling test equipment also includes a cantilever 9, with both ends of the cantilever 9 connected to the frame 6. A first driving component 7 is connected to the cantilever 9 and can slide along the extension direction of the cantilever 9; Figure 19 As shown, the cantilever 9 is provided with a sliding part 91, and the frame 6 is provided with a sliding engagement part 61. At least a portion of the sliding part 91 is located within the sliding engagement part 61. The cantilever 9 can drive the first driving member 7 to slide along the extension direction of the sliding engagement part 61, thereby realizing the movement of the first driving member 7 in the first direction X and the second direction Y.

[0132] The first drive component 7 is mounted on the frame 6 via a cantilever 9, which simplifies the connection between the first drive component 7 and the frame 6, thereby simplifying the structure of the first drive component 7 and the frame 6 and reducing the overall processing cost of the trampling test equipment.

[0133] In addition, the cantilever 9 and the frame 6 are connected by a sliding part 91 and a sliding mating part 61, which simplifies the connection method between the cantilever 9 and the frame 6, thereby simplifying the structure of the cantilever 9 and the frame 6 and reducing the processing cost of the cantilever 9 and the frame 6.

[0134] Based on the photovoltaic profiled steel sheet component and the stepping test equipment described in any of the above embodiments, this application provides a photovoltaic module testing method for testing the stepping performance of photovoltaic module 2.

[0135] In the first embodiment, among the first test point 26, the second test point 27, the third test point 28, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the eighth test point 2d, the ninth test point 2e, the tenth test point 2f, the eleventh test point 2g, and the twelfth test point 2h, only one point is selected for testing each time during the treadability performance test, and multiple rounds of testing are conducted to improve the accuracy of the test results. The selection of test points and the order of testing can be freely adjusted according to the actual testing process. In this embodiment, there are no special requirements for the order of testing the above test points.

[0136] Specifically, the testing methods for photovoltaic module 2 include:

[0137] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0138] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0139] The profiled steel sheet 1 is fixed to the purlin using supports;

[0140] The photovoltaic module 2 is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component, thereby increasing the accuracy and reliability of the test results;

[0141] The pedalability test was conducted at the first test point 26. The specific steps were as follows:

[0142] A first test point 26 is selected on the first surface 21, and the first test point 26 is located at the corner of the photovoltaic module 2;

[0143] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time.

[0144] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, the photovoltaic module testing method further includes: conducting the trampability performance test at the second test point 27, with the following specific steps:

[0145] A second test point 27 is selected on the first surface 21;

[0146] The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time.

[0147] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, and before or after the step of conducting the trampability performance test at the second test point 27, the photovoltaic module testing method further includes: conducting the trampability performance test at the sixth test point 2b, with the specific steps as follows:

[0148] A sixth test point 2b is selected on the first surface 21;

[0149] The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time.

[0150] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, and before or after the step of conducting the trampability performance test at the sixth test point 2b, the photovoltaic module testing method further includes: conducting the trampability performance test at the seventh test point 2c, with the specific steps as follows:

[0151] A seventh test point 2c is selected on the first surface 21;

[0152] The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0153] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, and before or after the step of conducting the trampability performance test at the seventh test point 2c, the photovoltaic module testing method further includes: conducting the trampability performance test at the third test point 28, with the specific steps as follows:

[0154] A third test point 28 is selected on the first surface 21;

[0155] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0156] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, and before or after the step of conducting the trampability performance test at the third test point 28, the photovoltaic module testing method further includes: conducting the trampability performance test at the eighth test point 2d, with the specific steps as follows:

[0157] An eighth test point 2d is selected on the first surface 21;

[0158] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0159] Specifically, before or after the step of conducting the treadability test at the first test point 26, before or after the step of conducting the treadability test at the second test point 27, before or after the step of conducting the treadability test at the sixth test point 2b, before or after the step of conducting the treadability test at the seventh test point 2c, before or after the step of conducting the treadability test at the third test point 28, and before or after the step of conducting the treadability test at the eighth test point 2d, when the photovoltaic module 2 is fixedly connected to the profiled steel plate 1 by the clamp 3, the photovoltaic module testing method further includes: conducting the treadability test at the fourth test point 29, the specific steps of which are as follows:

[0160] A fourth test point 29 is selected on the first surface 21;

[0161] The load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time.

[0162] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, before or after the step of conducting the trampability performance test at the third test point 28, before or after the step of conducting the trampability performance test at the eighth test point 2d, and before or after the step of conducting the trampability performance test at the fourth test point 29, the photovoltaic module testing method further includes: conducting the trampability performance test at the fifth test point 2a, with the specific steps as follows:

[0163] A fifth test point 2a is selected on the first surface 21;

[0164] The load block 4 is placed on the fifth test point 2a, and the load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0165] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, before or after the step of conducting the trampability performance test at the third test point 28, before or after the step of conducting the trampability performance test at the eighth test point 2d, before or after the step of conducting the trampability performance test at the fourth test point 29, and before or after the step of conducting the trampability performance test at the fifth test point 2a, the photovoltaic module testing method further includes: conducting the trampability performance test at the ninth test point 2e, with the specific steps as follows:

[0166] A ninth test point 2e is selected on the first surface 21;

[0167] The load block 4 is placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time.

[0168] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, before or after the step of conducting the trampability performance test at the third test point 28, before or after the step of conducting the trampability performance test at the eighth test point 2d, before or after the step of conducting the trampability performance test at the fourth test point 29, before or after the step of conducting the trampability performance test at the fifth test point 2a, and before or after the step of conducting the trampability performance test at the ninth test point 2e, the photovoltaic module testing method includes: conducting the trampability performance test at the tenth test point 2f, with the specific steps as follows:

[0169] A tenth test point 2f is selected on the first surface 21;

[0170] The load block 4 is placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0171] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, before or after the step of conducting the trampability performance test at the third test point 28, before or after the step of conducting the trampability performance test at the eighth test point 2d, before or after the step of conducting the trampability performance test at the fourth test point 29, before or after the step of conducting the trampability performance test at the fifth test point 2a, before or after the step of conducting the trampability performance test at the ninth test point 2e, and before or after the step of conducting the trampability performance test at the tenth test point 2f, the photovoltaic module testing method includes: conducting the trampability performance test at the eleventh test point 2g, the specific steps of which are as follows:

[0172] An eleventh test point 2g is selected on the first surface 21;

[0173] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0174] Specifically, before or after the step of conducting the trampability performance test at the first test point 26, before or after the step of conducting the trampability performance test at the second test point 27, before or after the step of conducting the trampability performance test at the sixth test point 2b, before or after the step of conducting the trampability performance test at the seventh test point 2c, before or after the step of conducting the trampability performance test at the third test point 28, before or after the step of conducting the trampability performance test at the eighth test point 2d, before or after the step of conducting the trampability performance test at the fourth test point 29, before or after the step of conducting the trampability performance test at the fifth test point 2a, before or after the step of conducting the trampability performance test at the ninth test point 2e, before or after the step of conducting the trampability performance test at the tenth test point 2f, and before or after the step of conducting the trampability performance test at the eleventh test point 2g, the photovoltaic module testing method further includes: conducting a trampability performance test at the twelfth test point 2h, with the specific steps as follows:

[0175] The twelfth test point 2h is selected on the first surface 21;

[0176] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0177] like Figure 4 and Figure 5 As shown, in the second embodiment, the photovoltaic module testing method includes:

[0178] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0179] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0180] The profiled steel sheet 1 is fixed to the purlin using supports;

[0181] The photovoltaic module 2 is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component, thereby increasing the accuracy and reliability of the test results;

[0182] The pedalability test was conducted at the first test point 26 and the second test point 27. The specific steps were as follows:

[0183] Select a first test point 26 and a second test point 27 on the first surface 21;

[0184] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is then placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time.

[0185] In this embodiment, the first test point 26 and the second test point 27 are tested by the load block 4 to determine whether the trampling performance of the corner and the suspended edge 251 of the photovoltaic module 2 is qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the structural strength of the corner and the suspended edge 251, thereby reducing the risk of damage to the corner and the suspended edge 251 of the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel plate component.

[0186] During the test, a preset load can be applied to the first test point 26 first, or a preset load can be applied to the second test point 27 first.

[0187] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the sixth test point 2b and the seventh test point 2c, with the following specific steps:

[0188] Select the sixth test point 2b and the seventh test point 2c on the first surface 21;

[0189] The load block 4 is placed on the sixth test point 2b. The load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is then placed on the seventh test point 2c. The load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0190] During the test, a preset load can be applied to the sixth test point 2b first, or a preset load can be applied to the seventh test point 2c first.

[0191] Furthermore, the step of conducting the pedalability test at the sixth test point 2b and the seventh test point 2c can be performed before or after the step of conducting the pedalability test at the first test point 26 and the second test point 27.

[0192] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the third test point 28, with the following specific steps:

[0193] A third test point 28 is selected on the first surface 21;

[0194] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0195] Specifically, the step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the first test point 26 and the second test point 27; the step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the sixth test point 2b and the seventh test point 2c.

[0196] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eighth test point 2d, with the following specific steps:

[0197] An eighth test point 2d is selected on the first surface 21;

[0198] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0199] Specifically, the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the first test point 26 and the second test point 27; the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the sixth test point 2b and the seventh test point 2c; and the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the third test point 28.

[0200] Specifically, when the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 via the clamp 3, the photovoltaic module testing method further includes: conducting a step-resistant performance test at the fourth test point 29 and the fifth test point 2a, with the specific steps as follows:

[0201] A fourth test point 29 and a fifth test point 2a are selected on the first surface 21;

[0202] The load block 4 is placed on the fourth test point 29. The load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is then placed on the fifth test point 2a. The load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0203] During the test, a preset load can be applied to the fourth test point 29 first, or a preset load can be applied to the fifth test point 2a first.

[0204] Furthermore, the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the first test point 26 and the second test point 27; the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the sixth test point 2b and the seventh test point 2c; the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the third test point 28; and the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the eighth test point 2d.

[0205] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the ninth test point 2e and the tenth test point 2f, with the following specific steps:

[0206] A ninth test point 2e and a tenth test point 2f are selected on the first surface 21;

[0207] The load block 4 is placed on the ninth test point 2e. The load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is then placed on the tenth test point 2f. The load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0208] During the test, a preset load can be applied to the ninth test point first, or a preset load can be applied to the tenth test point 2f first.

[0209] Furthermore, the steps for conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the steps for conducting the treadability test at the first test point 26 and the second test point 27; the steps for conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the steps for conducting the treadability test at the sixth test point 2b and the seventh test point 2c; the steps for conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the steps for conducting the treadability test at the third test point 28; the steps for conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the steps for conducting the treadability test at the eighth test point 2d; and the steps for conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the steps for conducting the treadability test at the fourth test point 29 and the fifth test point 2a.

[0210] Specifically, the photovoltaic module testing method includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0211] An eleventh test point 2g is selected on the first surface 21;

[0212] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0213] Specifically, the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the first test point 26 and the second test point 27; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the sixth test point 2b and the seventh test point 2c; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the eighth test point 2d; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a; and the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the ninth test point 2e and the tenth test point 2f.

[0214] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0215] The twelfth test point 2h is selected on the first surface 21;

[0216] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0217] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the first test point 26 and the second test point 27; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the sixth test point 2b and the seventh test point 2c; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the third test point 28 ... twelfth test point 2h. The step of conducting the treadability test at the eighth test point 2d may be performed before or after the step of conducting the treadability test at the twelfth test point 2h; the step of conducting the treadability test at the twelfth test point 2h may be performed before or after the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a; the step of conducting the treadability test at the twelfth test point 2h may be performed before or after the step of conducting the treadability test at the eleventh test point 2g.

[0218] like Figure 6As shown, in the third embodiment, the photovoltaic module testing method includes:

[0219] Under STC conditions, photovoltaic module 2 was subjected to IV testing (i.e., the output power of photovoltaic module 2 was tested), and the test results were recorded as the initial power test results.

[0220] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0221] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0222] The profiled steel sheet 1 is fixed to the purlin using supports;

[0223] The photovoltaic module 2 is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component, thereby increasing the accuracy and reliability of the test results;

[0224] The test of the treadability performance was carried out at the test point. The specific steps were as follows: the load block 4 was placed at the test point, and the load block 4 applied a preset load to the test point and maintained it for a preset time.

[0225] Under STC conditions, the photovoltaic module 2 underwent IV testing under load, and the results were recorded as load power test results.

[0226] Comparative analysis of the initial power test results and the load power test results shows that if the step-safe performance of photovoltaic module 2 is qualified, the power attenuation of photovoltaic module 2 under load is less than or equal to 5%.

[0227] In this embodiment, by using load block 4 to perform a stepability test on the test point, it is possible to determine whether the power attenuation of photovoltaic module 2 after being stepped on meets the stepability requirements, and thus determine whether the stepability performance of photovoltaic module 2 is qualified.

[0228] The test points include at least the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c. The steps for conducting the treadability test at the test points include:

[0229] A first test point 26, a second test point 27, a sixth test point 2b, and a seventh test point 2c are selected on the first surface 21. The sixth test point 2b and the first test point 26 are centrally symmetrical about the geometric center of the first surface 21, and the seventh test point 2c and the second test point 27 are centrally symmetrical about the geometric center of the first surface 21.

[0230] The load block 4 is placed on at least three of the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c, respectively. The load block 4 applies a preset load to the photovoltaic module 2 and maintains it for a preset time. For example, the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27 and applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the sixth test point 2b and applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c and applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0231] In this embodiment, the load block 4 is used to perform a stepability test on the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c. This allows for the determination of whether the stepability of the corners and the suspended edge 251 of the photovoltaic module 2 is qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the structural strength of the corners and the suspended edge 251, thereby reducing the risk of damage to the corners and the suspended edge 251 of the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel sheet components. The test is conducted on the centrally symmetrically set first test point 26 and sixth test point 2b, second test point 27 and seventh test point 2c, which can improve the accuracy and reliability of the test results.

[0232] During the test, a preset load can be applied to the first test point 26 first, or the second test point 27 first, or the sixth test point 2b first, or the seventh test point 2c first.

[0233] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the third test point 28, with the following specific steps:

[0234] A third test point 28 is selected on the first surface 21;

[0235] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0236] The step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c.

[0237] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eighth test point 2d, with the following specific steps:

[0238] An eighth test point 2d is selected on the first surface 21;

[0239] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0240] Specifically, the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c; the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the third test point 28.

[0241] Specifically, when the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 via the clamp 3, the photovoltaic module testing method further includes: conducting a step-resistant performance test at the fourth test point 29 and the fifth test point 2a, with the specific steps as follows:

[0242] A fourth test point 29 and a fifth test point 2a are selected on the first surface 21;

[0243] The load block 4 is placed on the fourth test point 29. The load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is then placed on the fifth test point 2a. The load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0244] During the test, a preset load can be applied to the fourth test point 29 first, or a preset load can be applied to the fifth test point 2a first.

[0245] Furthermore, the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c; the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the third test point 28; and the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a can be performed before or after the step of conducting the treadability test at the eighth test point 2d.

[0246] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the ninth test point 2e and the tenth test point 2f, with the following specific steps:

[0247] A ninth test point 2e and a tenth test point 2f are selected on the first surface 21. The ninth test point 2e and the fourth test point 29 are centrally symmetrical about the geometric center of the first surface 21, and the tenth test point 2f and the fifth test point 2a are centrally symmetrical about the geometric center of the first surface 21.

[0248] The load block 4 is placed on the ninth test point 2e. The load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is then placed on the tenth test point 2f. The load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0249] During the test, a preset load can be applied to the ninth test point first, or a preset load can be applied to the tenth test point 2f first.

[0250] Furthermore, the step of conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c; the step of conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the step of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the step of conducting the treadability test at the eighth test point 2d; and the step of conducting the treadability test at the ninth test point 2e and the tenth test point 2f can be performed before or after the step of conducting the treadability test at the fourth test point 29 and the fifth test point 2a.

[0251] Specifically, the photovoltaic module testing method includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0252] An eleventh test point 2g is selected on the first surface 21;

[0253] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0254] Specifically, the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the steps of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the steps of conducting the treadability test at the eighth test point 2d; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the steps of conducting the treadability test at the fourth test point 29 and the fifth test point 2a; and the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the steps of conducting the treadability test at the ninth test point 2e and the tenth test point 2f.

[0255] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0256] The twelfth test point 2h is selected on the first surface 21;

[0257] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0258] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the sixth test point 2b, and the seventh test point 2c; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eighth test point 2d; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the fourth test point 29 and the fifth test point 2a; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the ninth test point 2e and the tenth test point 2f; and the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eleventh test point 2g.

[0259] like Figure 7 and Figure 8 As shown, in the fourth embodiment, when the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, it is not necessary to set the aforementioned fourth test point 29, fifth test point 2a, ninth test point 2e, and tenth test point 2f on the photovoltaic module 2. In this case, the photovoltaic module testing method includes:

[0260] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0261] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0262] The profiled steel sheet 1 is fixed to the purlin using supports;

[0263] The pedalability test was conducted at test point 26, test point 27, and test point 28. The specific steps were as follows:

[0264] A first test point 26, a second test point 27, and a third test point 28 are selected on the first surface 21;

[0265] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0266] In this embodiment, the load block 4 is used to perform a stepability test on the first test point 26, the second test point 27, and the third test point 28. This allows the system to determine whether the stepability of the corners, the suspended edge 251, and the edge of the second connection part 24 of the photovoltaic module 2 is up to standard. This facilitates adjustments to the photovoltaic module 2 to improve the structural strength of the corners, the suspended edge 251, and the edge of the second connection part 24, thereby reducing the risk of damage to the corners, the suspended edge 251, and the edge of the second connection part 24 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel sheet components.

[0267] During the test, a preset load can be applied to the first test point 26, the second test point 27, or the third test point 28.

[0268] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d, with the following specific steps:

[0269] The sixth test point 2b, the seventh test point 2c, and the eighth test point 2d are selected on the first surface 21;

[0270] The load block 4 is placed on the sixth test point 2b. The load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c. The load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the eighth test point 2d. The load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0271] During the test, a preset load can be applied to the sixth test point 2b first, or the seventh test point 2c first, or the eighth test point 2d first.

[0272] Furthermore, the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, and the third test point 28.

[0273] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0274] An eleventh test point 2g is selected on the first surface 21;

[0275] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0276] Specifically, the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, and the third test point 28; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d.

[0277] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0278] The twelfth test point 2h is selected on the first surface 21;

[0279] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0280] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, and the third test point 28; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d; and the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the step of conducting the treadability test at the eleventh test point 2g.

[0281] like Figure 9 As shown, in the fifth embodiment, when the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, the photovoltaic module testing method includes:

[0282] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0283] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0284] The profiled steel sheet 1 is fixed to the purlin using supports;

[0285] The test is conducted on the test point. The specific steps are as follows: the load block 4 is placed on the test point, the load block 4 applies a preset load to the test point and maintains it for a preset time. When the load block 4 is placed on the test point, the minimum distance between the outline of the test surface 41 and the edge of the photovoltaic module 2 is between 0-20mm.

[0286] Specifically, the test points include at least the first test point 26, the second test point 27, the third test point 28, the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d. The steps for conducting the treadability test at the test points include:

[0287] A first test point 26, a second test point 27, a third test point 28, a sixth test point 2b, a seventh test point 2c, and an eighth test point 2d are selected on the first surface 21. The sixth test point 2b and the first test point 26 are centrally symmetrical about the geometric center of the first surface 21. The seventh test point 2c and the second test point 27 are centrally symmetrical about the geometric center of the first surface 21. The eighth test point 2d and the third test point 28 are centrally symmetrical about the geometric center of the first surface 21.

[0288] The load block 4 is placed on at least three of the following test points: first test point 26, second test point 27, third test point 28, sixth test point 2b, seventh test point 2c, and eighth test point 2d. The load block 4 applies a preset load to the photovoltaic module 2 and maintains it for a preset time. For example, the load block 4 is placed on at least four of the following test points: first test point 26, second test point 27, third test point 28, sixth test point 2b, seventh test point 2c, and eighth test point 2d, to conduct a trampling performance test. For example, the load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is then placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time. The load block 4 is then placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is then placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. Finally, the load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0289] In this embodiment, the load block 4 is used to perform a trampling performance test on the first test point 26, the second test point 27, the third test point 28, the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d. This allows for the determination of whether the trampling performance of the corners, the suspended edge 251, and the edge of the second connecting part 24 of the photovoltaic module 2 is qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the structural strength of the corners, the suspended edge 251, and the edge of the second connecting part 24, thereby reducing the risk of damage to the corners, the suspended edge 251, and the edge of the second connecting part 24 of the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel sheet components. The test is conducted on the centrally symmetrically set first test point 26 and sixth test point 2b, second test point 27 and seventh test point 2c, third test point 28 and eighth test point 2d, which can improve the accuracy and reliability of the test results.

[0290] During the test, a preset load can be applied to the first test point 26 first, or the second test point 27 first, or the third test point 28 first, or the sixth test point 2b first, or the seventh test point 2c first, or the eighth test point 2d first.

[0291] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0292] An eleventh test point 2g is selected on the first surface 21;

[0293] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0294] The step of conducting the pedalability test at the eleventh test point 2g can be performed before or after the steps of conducting the pedalability test at the first test point 26, the second test point 27, the third test point 28, the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d.

[0295] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0296] The twelfth test point 2h is selected on the first surface 21;

[0297] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0298] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the third test point 28, the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eleventh test point 2g.

[0299] like Figure 10 and Figure 11 As shown, in the sixth embodiment, when the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 by the clamp 3, the photovoltaic module 2 must be provided with at least a first test point 26, a second test point 27, a fourth test point 29, and a fifth test point 2a. In this case, the photovoltaic module testing method includes:

[0300] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0301] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0302] The profiled steel sheet 1 is fixed to the purlin using supports;

[0303] The susceptibility to being stepped on was tested at test point 26, test point 27, test point 29, and test point 2a. The specific steps were as follows:

[0304] A first test point 26, a second test point 27, a fourth test point 29, and a fifth test point 2a are selected on the first surface 21;

[0305] The load block 4 is placed on at least three of the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a respectively to conduct a treadability test. For example, the load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time; the load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time; the load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time; the load block 4 is placed on the fifth test point 2a, and the load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0306] In this embodiment, the load block 4 is used to perform a stepability test on the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a. This test can determine whether the stepability of the corners, the suspended edge 251, the edge of the first connecting part 23, and the middle position of the two adjacent clamps 3 is qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the structural strength of the corners, the suspended edge 251, the edge of the first connecting part 23, and the middle position of the two adjacent clamps 3, thereby reducing the risk of damage to the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel sheet components.

[0307] During the test, a preset load can be applied to the first test point 26 first, or the second test point 27 first, or the fourth test point 29 first, or the fifth test point 2a first.

[0308] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f, with the following specific steps:

[0309] Sixth test point 2b, seventh test point 2c, ninth test point 2e and tenth test point 2f are selected on the first surface 21;

[0310] The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is then placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is then placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is then placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0311] During the test, a preset load can be applied to the sixth test point 2b first, or the seventh test point 2c first, or the ninth test point 2e first, or the tenth test point 2f first.

[0312] Furthermore, the step of conducting the pedalability test at the sixth test point, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f can be performed before or after the step of conducting the pedalability test at the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a.

[0313] Specifically, such as Figure 2As shown, when the distance between the photovoltaic module 2 and the profiled steel sheet 1 in the third direction Z is small, the photovoltaic module 2 will abut against the angled portion 14 when it bends downward under force. At this time, the part of the photovoltaic module 2 that abuts against the angled portion 14 is the second connecting portion 24. A third test point 28 is set at the edge of the second connecting portion 24. The photovoltaic module testing method also includes: performing a step-through performance test at the third test point 28. The specific steps are as follows:

[0314] A third test point 28 is selected on the first surface 21;

[0315] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0316] Specifically, the step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a; the step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f.

[0317] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eighth test point 2d, with the following specific steps:

[0318] An eighth test point 2d is selected on the first surface 21;

[0319] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0320] Specifically, the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a; the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; and the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the third test point 28.

[0321] Specifically, the photovoltaic module testing method includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0322] An eleventh test point 2g is selected on the first surface 21;

[0323] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0324] Specifically, the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the third test point 28; and the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the eighth test point 2d.

[0325] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0326] The twelfth test point 2h is selected on the first surface 21;

[0327] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0328] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, and the fifth test point 2a; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eighth test point 2d; and the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eleventh test point 2g.

[0329] like Figure 12 As shown, in the seventh embodiment, when the photovoltaic module 2 and the profiled steel sheet 1 are fixedly connected by the clamp 3, the photovoltaic module testing method includes:

[0330] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0331] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0332] The profiled steel sheet 1 is fixed to the purlin using supports;

[0333] The trampling performance test is conducted at the test point. The specific steps are as follows: the load block 4 is placed on the test point, and the load block 4 applies a preset load to the test point and maintains it for a preset time. The preset load F satisfies: 50KG≤F≤160KG. The surface of the load block 4 that abuts against the first surface 21 is the test surface 41, and the area S of the test surface satisfies: 50cm². 2 ≤S≤400cm 2 .

[0334] Specifically, the test points include at least the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f. The steps for conducting the susceptibility testing at the test points include:

[0335] A first test point 26, a second test point 27, a fourth test point 29, a fifth test point 2a, a sixth test point 2b, a seventh test point 2c, a ninth test point 2e, and a tenth test point 2f are selected on the first surface 21. The sixth test point 2b and the first test point 26 are centrally symmetrical about the geometric center of the first surface 21. The seventh test point 2c and the second test point 27 are centrally symmetrical about the geometric center of the first surface 21. The ninth test point 2e and the fourth test point 29 are centrally symmetrical about the geometric center of the first surface 21. The tenth test point 2f and the fifth test point 2a are centrally symmetrical about the geometric center of the first surface 21.

[0336] The load block 4 is placed on at least three of the following test points: first test point 26, second test point 27, fourth test point 29, fifth test point 2a, sixth test point 2b, seventh test point 2c, ninth test point 2e, and tenth test point 2f. The load block 4 applies a preset load to the photovoltaic module 2 and maintains it for a preset time. For example, the load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time; the load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time; the load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29. Set a load and maintain it for a preset time. Place the load block 4 on the fifth test point 2a. Apply a preset load to the fifth test point 2a and maintain it for a preset time. Place the load block 4 on the sixth test point 2b. Apply a preset load to the sixth test point 2b and maintain it for a preset time. Place the load block 4 on the seventh test point 2c. Apply a preset load to the seventh test point 2c and maintain it for a preset time. Place the load block 4 on the ninth test point 2e. Apply a preset load to the ninth test point 2e and maintain it for a preset time. Place the load block 4 on the tenth test point 2f. Apply a preset load to the tenth test point 2f and maintain it for a preset time.

[0337] In this embodiment, the load block 4 is used to perform a trampling performance test on the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f. This allows for the determination of whether the trampling performance of the corners, the suspended edge 251, the edge of the first connecting part 23, and the middle position of two adjacent clamps 3 are qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the structural strength of the corners, the suspended edge 251, the edge of the first connecting part 23, and the middle position of two adjacent clamps 3, thereby reducing the risk of damage to the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel sheet components. During the test, the first test point 26 and the sixth test point 2b, the second test point 27 and the seventh test point 2c, the fourth test point 29 and the ninth test point 2e, the fifth test point 2a and the tenth test point 2f are tested in a centrally symmetrical manner, which can improve the accuracy and reliability of the test results.

[0338] During the test, a preset load can be applied to the first test point 26 first, or the second test point 27 first, or the fourth test point 29 first, or the fifth test point 2a first, or the sixth test point 2b first, or the seventh test point 2c first, or the ninth test point 2e first, or the tenth test point 2f first.

[0339] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the third test point 28, with the following specific steps:

[0340] A third test point 28 is selected on the first surface 21;

[0341] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0342] The step of conducting the treadability test at the third test point 28 is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f.

[0343] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the eighth test point 2d, with the following specific steps:

[0344] An eighth test point 2d is selected on the first surface 21;

[0345] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0346] Specifically, the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the eighth test point 2d is performed before or after the step of conducting the treadability test at the third test point 28.

[0347] Specifically, the photovoltaic module testing method includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0348] An eleventh test point 2g is selected on the first surface 21;

[0349] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0350] Specifically, the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the third test point 28; and the step of conducting the treadability test at the eleventh test point 2g can be performed before or after the step of conducting the treadability test at the eighth test point 2d.

[0351] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0352] The twelfth test point 2h is selected on the first surface 21;

[0353] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0354] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the third test point 28; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eighth test point 2d; and the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eleventh test point 2g.

[0355] In the eighth embodiment, such as Figure 13 As shown, when the photovoltaic module 2 and the profiled steel sheet 1 are fixedly connected by the clamp 3, as Figure 2 As shown, when the distance between the photovoltaic module 2 and the profiled steel sheet 1 in the third direction Z is small, the photovoltaic module 2 will abut against the angled section 14 when it bends downward under force. At this time, the part of the photovoltaic module 2 that abuts against the angled section 14 is the second connecting part 24. A third test point 28 is provided at the edge of the second connecting part 24. The photovoltaic module testing method includes:

[0356] The photovoltaic module 2 is installed on the profiled steel sheet 1. The specific steps are as follows:

[0357] Three purlins are placed on the base surface of the rigid test base 5, with a preset distance of 1.5m between adjacent purlins;

[0358] The profiled steel sheet 1 is fixed to the purlin using supports;

[0359] A first test point 26, a second test point 27, a third test point 28, a fourth test point 29, a fifth test point 2a, a sixth test point 2b, a seventh test point 2c, an eighth test point 2d, a ninth test point 2e, and a tenth test point 2f are selected on the first surface 21. The sixth test point 2b and the first test point 26 are centrally symmetrical about the geometric center of the first surface 21. The seventh test point 2c and the second test point 27 are centrally symmetrical about the geometric center of the first surface 21. The eighth test point 2d and the third test point 28 are centrally symmetrical about the geometric center of the first surface 21. The ninth test point 2e and the fourth test point 29 are centrally symmetrical about the geometric center of the first surface 21. The tenth test point 2f and the fifth test point 2a are centrally symmetrical about the geometric center of the first surface 21.

[0360] When the photovoltaic module 2 is bonded and fixed to the profiled steel sheet 1, the load block 4 is placed on the first test point 26, the second test point 27, the third test point 28, the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d, respectively. The load block 4 applies a preset load to the photovoltaic module and maintains it for a preset time; or,

[0361] When the photovoltaic module 2 is fixedly connected to the profiled steel plate 1 by the clamp 3, the load block 4 is placed on the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e and the tenth test point 2f respectively. The load block 4 applies a preset load to the photovoltaic module and maintains it for a preset time.

[0362] In this embodiment, the load block 4 is used to perform a trampling performance test on the first test point 26, the second test point 27, the third test point 28, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the eighth test point 2d, the ninth test point 2e, and the tenth test point 2f. This allows for the determination of whether the trampling performance of the corners, the suspended edge 251, the edge of the second connecting part 24, the edge of the first connecting part 23, and the middle position of two adjacent clamps 3 is qualified. This facilitates the adjustment of the photovoltaic module 2 to improve the performance of the corners, the suspended edge 251, and the second connecting part 24. The structural strength of the edge position, the edge position of the first connecting part 23, and the middle position of the two adjacent clamps 3 is improved, thereby reducing the risk of damage to the photovoltaic module 2 during the installation of the photovoltaic module 2 and the photovoltaic profiled steel plate component, so as to adapt to the trampling performance of the photovoltaic module under different installation forms; during the test, the first test point 26 and the sixth test point 2b, the second test point 27 and the seventh test point 2c, the third test point 28 and the eighth test point 2d, the fourth test point 29 and the ninth test point 2e, the fifth test point 2a and the tenth test point 2f, which are centrally symmetrically set, can improve the accuracy and reliability of the test results.

[0363] During the test, a preset load can be applied to the first test point 26 first, or the second test point 27 first, or the third test point 28 first, or the fourth test point 29 first, or the fifth test point 2a first, or the sixth test point 2b first, or the seventh test point 2c first, or the eighth test point 2d first, or the ninth test point 2e first, or the tenth test point 2f first.

[0364] Specifically, the photovoltaic module testing method includes: conducting a trampling performance test at the eleventh test point 2g, with the following specific steps:

[0365] An eleventh test point 2g is selected on the first surface 21;

[0366] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0367] The step of conducting the pedalability test at the eleventh test point 2g can be performed before or after the steps of conducting the pedalability test at the first test point 26, the second test point 27, the third test point 28, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the eighth test point 2d, the ninth test point 2e, and the tenth test point 2f.

[0368] Specifically, the photovoltaic module testing method also includes: conducting a trampling performance test at the twelfth test point 2h, with the following specific steps:

[0369] The twelfth test point 2h is selected on the first surface 21;

[0370] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0371] Specifically, the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the first test point 26, the second test point 27, the third test point 28, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the eighth test point 2d, the ninth test point 2e, and the tenth test point 2f; the step of conducting the treadability test at the twelfth test point 2h can be performed before or after the steps of conducting the treadability test at the eleventh test point 2g.

[0372] In any of the above embodiments, before the step of mounting the photovoltaic module 2 on the profiled steel sheet 1, the photovoltaic module testing method includes:

[0373] Perform a visual inspection on photovoltaic module 2 and record the initial visual results;

[0374] After the step of applying a preset load to the photovoltaic module 2 by the load block 4 and maintaining it for a preset time, the photovoltaic module testing method includes:

[0375] Perform a visual inspection on photovoltaic module 2 after loading, and record the results as visual load results;

[0376] Compare and analyze the initial appearance results and the appearance load results, and judge the degree of change in the appearance of photovoltaic module 2 after loading. If the appearance of photovoltaic module 2 shows obvious cracks or breakage, or if photovoltaic module 2 falls off the profiled steel sheet 1, or if the photovoltaic profiled steel sheet component shows obvious deformation, then the stepability of photovoltaic module 2 does not meet the requirements and the test needs to be stopped immediately. If the photovoltaic profiled steel sheet component meets the appearance requirements of IEC61215-1, then it is preliminarily determined that the stepability of photovoltaic module 2 at this test point meets the requirements.

[0377] The step of visually inspecting the photovoltaic module 2 after loading can be performed once or multiple times, and the visual inspection step can be performed after any step of the load block 4 applying a preset load to the photovoltaic module 2 and maintaining it for a preset time. In this embodiment, the photovoltaic module 2 is visually inspected after each step of the load block 4 applying a preset load to the photovoltaic module 2 and maintaining it for a preset time.

[0378] Specifically, prior to the step of mounting the photovoltaic module 2 onto the profiled steel sheet 1, the photovoltaic module testing method includes:

[0379] EL testing was performed on photovoltaic module 2, and the results were recorded as the initial results of the internal structure.

[0380] After load block 4 applies a preset load to all test points of photovoltaic module 2 and maintains it for a preset time, the photovoltaic module testing method includes:

[0381] EL testing was performed on photovoltaic module 2 after loading, and the results were recorded as the internal structural load results;

[0382] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change of the internal structure of the photovoltaic module 2 after the load.

[0383] Specifically, prior to the step of mounting the photovoltaic module 2 onto the profiled steel sheet 1, the photovoltaic module testing method includes:

[0384] The performance of photovoltaic module 2 was tested and recorded as the initial performance test result;

[0385] After load block 4 applies a preset load to all test points of photovoltaic module 2 and maintains it for a preset time, the photovoltaic module testing method includes:

[0386] The performance of photovoltaic module 2 under load was tested and recorded as the load performance test result;

[0387] By comparing and analyzing the initial performance test results with the load performance test results, the degree of performance change of photovoltaic module 2 after loading is determined. The performance tests include one or more of the following: IV test, insulation test, and wet leakage current test. Taking the performance tests including IV test, insulation test, and wet leakage current test as an example, if photovoltaic module 2 meets the insulation and wet leakage current test requirements after loading and the power attenuation is less than 5%, then it is preliminarily determined that the trampability performance of photovoltaic module 2 meets the requirements; otherwise, the trampability performance of photovoltaic module 2 does not meet the requirements.

[0388] Specifically, before the step of installing the photovoltaic module 2 on the profiled steel sheet 1, the photovoltaic module testing method includes:

[0389] At least two photovoltaic modules 2 with the same design and BOM are randomly selected from the production line. One of them is used as a reference and the rest are used as test pieces. For example, if there are three photovoltaic modules 2, one is used as a reference and the other two are used as test pieces.

[0390] After load block 4 applies a preset load to all test points of photovoltaic module 2 and maintains it for a preset time, the photovoltaic module testing method includes:

[0391] A comprehensive aging test was performed on the reference part and the test part after loading.

[0392] Defect tests were performed on the aged reference parts and recorded as reference aging results. Defect tests were performed on the aged test parts and recorded as trampling aging results.

[0393] By comparing and analyzing the reference aging results and the trampling aging results, the anti-aging performance of the test piece compared with the reference piece can be determined.

[0394] Among them, defect testing includes one or more of the above-mentioned appearance inspection, EL test, and IV test.

[0395] The comprehensive aging test includes environmental aging test and mechanical load test. In the actual test process, environmental aging test and / or mechanical load test can be performed on photovoltaic module 2 to improve the accuracy and reliability of the test results.

[0396] Environmental aging tests include, but are not limited to, thermal cycling tests, wet-freeze tests, and wet-heat cycling tests. They can also include other common types of aging tests and their combinations. In actual testing, the types, quantities, and order of environmental aging tests can be reasonably selected according to testing needs to improve the accuracy and reliability of test results. This application does not impose any special limitations on the specific combination methods.

[0397] The mechanical load test includes dynamic load test and static load test. In the dynamic load test, multiple cylinders (20 cylinders for example) are uniformly adsorbed on the first surface 21 of the photovoltaic module 2. The 20 cylinders simultaneously pull the photovoltaic module 2 up with a preset force (1000 Pa for example) and then press down on the photovoltaic module 2 with a preset force (1000 Pa for example). One pull-up and one press-down constitutes one cycle. The photovoltaic module 2 is subjected to a preset number of cycle tests (1000 cycles for example). In the static load test, multiple cylinders (20 cylinders for example) are uniformly adsorbed on the first surface 21 of the photovoltaic module 2. The 20 cylinders simultaneously pull the photovoltaic module 2 up with a preset force (1000 Pa for example) and maintain it for a preset time. Then, the photovoltaic module 2 is pressed down with a preset force (1000 Pa for example) and maintained for a preset time (30 minutes for example). One pull-up and one press-down constitutes one cycle. The photovoltaic module 2 is subjected to a preset number of cycle tests (3 cycles for example).

[0398] In comprehensive aging tests, the types and quantities of tests can be freely selected according to actual testing needs. Different comprehensive aging test sequences can be formed based on the test types, quantities, and test parameters (including but not limited to test temperature, test humidity, test time, test load, and number of tests). During actual testing, the number of comprehensive aging test sequences can also be flexibly set according to actual needs. When multiple comprehensive aging test sequences are set, different sequences can be performed simultaneously or at different times. For example... Figure 20 As shown, the following examples all use three comprehensive aging test sequences.

[0399] In addition, photovoltaic module testing methods also include the following during or after testing:

[0400] Fill out the test report so that the trampling performance and anti-aging performance of photovoltaic module 2 can be observed intuitively.

[0401] The test report includes the title, name and address of the laboratory, date and number of the report, name and address of the commissioning unit, test point distribution map, test point test sequence, description of the test sample, photographic information of the test sample, date of the test sample and test date, appearance of photovoltaic module 2 before, during and after the test, initial / final steady state of photovoltaic module 2, power test information of photovoltaic module 2 under STC conditions, insulation test information of photovoltaic module 2 under STC conditions, wet leakage test information of photovoltaic module 2 under STC conditions, image information of EL test of photovoltaic module 2 under STC conditions, and other destructive changes of photovoltaic module 2.

[0402] A second aspect of this application provides a testing method for photovoltaic profiled steel sheet components, the testing method for photovoltaic profiled steel sheet components including:

[0403] The photovoltaic module 2 is subjected to a step-ability test according to the photovoltaic module testing method in any of the above embodiments to determine whether the photovoltaic module of the photovoltaic profiled steel plate component is qualified for step-ability test, thereby reducing the risk of damage to the photovoltaic profiled steel plate component during installation, wiring, testing, maintenance and replacement due to the use of unqualified photovoltaic modules.

[0404] In summary, as Figure 20 As shown, the photovoltaic module testing method in the first embodiment is illustrated by example:

[0405] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0406] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0407] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0408] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0409] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0410] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0411] Perform EL testing on the test piece and record the results as the initial internal structure.

[0412] Place the purlins on the base surface of the rigid test base 5 at preset intervals;

[0413] The profiled steel sheet 1 is fixed to the purlin using supports;

[0414] According to the installation method specified in the supplier's installation instructions, the test piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0415] Select the first test point 26 on the first surface 21 and fill it in the test report;

[0416] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time;

[0417] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0418] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0419] Select a second test point 27 on the first surface 21 and fill it in the test report;

[0420] The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time.

[0421] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0422] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0423] Select the sixth test point 2b on the first surface 21 and fill it in the test report;

[0424] The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time.

[0425] Perform a visual inspection on photovoltaic module 2 after loading, record the results as visual load results, and fill them in the test report;

[0426] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0427] Select the seventh test point 2c on the first surface 21 and fill it in the test report;

[0428] The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0429] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0430] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0431] Select a third test point 28 on the first surface 21 and fill it in the test report;

[0432] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0433] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0434] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0435] Select the eighth test point 2d on the first surface 21 and fill it in the test report;

[0436] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0437] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0438] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0439] When the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 by the clamp 3, the fourth test point 29 is selected on the first surface 21 and filled in the test report;

[0440] The load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time.

[0441] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0442] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0443] Select the fifth test point 2a on the first surface 21 and fill it in the test report;

[0444] The load block 4 is placed on the fifth test point 2a, and the load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0445] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0446] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0447] Select the ninth test point 2e on the first surface 21 and fill it in the test report;

[0448] The load block 4 is placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time.

[0449] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0450] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0451] Select the tenth test point 2f on the first surface 21 and fill it in the test report;

[0452] The load block 4 is placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0453] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0454] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0455] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0456] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0457] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0458] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0459] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0460] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0461] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0462] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0463] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0464] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0465] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0466] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the test continues; if at least one of the appearance inspection and performance test is unqualified, the test piece's treadability is unqualified, and the test is stopped.

[0467] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0468] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0469] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0470] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0471] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0472] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0473] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0474] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0475] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0476] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0477] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0478] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0479] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0480] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0481] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0482] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0483] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0484] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0485] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0486] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0487] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0488] like Figure 20 As shown, an example is provided to illustrate the photovoltaic module testing method in the second embodiment:

[0489] At least six identical photovoltaic modules 2 with the same BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of equal quantity (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one module is used as a reference and the rest are used as test modules. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into three groups: Group 1, Group 2, and Group 3. Each of Group 1, Group 2, and Group 3 contains three photovoltaic modules 2.

[0490] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0491] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0492] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0493] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0494] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0495] Perform EL testing on the test piece and record the results as the initial internal structure.

[0496] Place the purlin on the base surface of the rigid test base 5;

[0497] The profiled steel sheet 1 is fixed to the purlin using supports;

[0498] According to the installation method specified in the supplier's installation instructions, the test piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0499] Select the first test point 26 and the second test point 27 on the first surface 21 and fill them in the test report;

[0500] The load block 4 is placed on the first test point 26, the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time, the load block 4 is placed on the second test point 27, the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time.

[0501] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0502] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0503] Select the sixth test point 2b and the seventh test point 2c on the first surface 21 and fill them in the test report;

[0504] The load block 4 is placed on the sixth test point 2b. The load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c. The load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0505] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0506] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0507] Select a third test point 28 on the first surface 21 and fill it in the test report;

[0508] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0509] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0510] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0511] Select the eighth test point 2d on the first surface 21 and fill it in the test report;

[0512] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0513] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0514] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0515] When the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 by the clamp 3, the fourth test point 29 and the fifth test point 2a are selected on the first surface 21 and filled in the test report;

[0516] The load block 4 is placed on the fourth test point 29. The load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is placed on the fifth test point 2a. The load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0517] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0518] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0519] Select the ninth test point 2e and the tenth test point 2f on the first surface 21 and fill them in the test report;

[0520] The load block 4 is placed on the ninth test point 2e. The load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is placed on the tenth test point 2f. The load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0521] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0522] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0523] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0524] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0525] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0526] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0527] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0528] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0529] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0530] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0531] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0532] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0533] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0534] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the step-safe performance of photovoltaic module 2 is qualified; if at least one of the appearance inspection and performance test is unqualified, the step-safe performance of photovoltaic module 2 is unqualified.

[0535] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0536] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0537] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0538] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0539] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0540] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0541] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0542] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0543] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0544] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0545] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0546] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0547] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0548] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0549] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0550] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0551] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0552] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0553] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0554] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0555] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0556] like Figure 20As shown, an example is provided to illustrate the photovoltaic module testing method in the third embodiment:

[0557] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0558] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0559] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0560] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0561] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0562] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0563] Perform EL testing on the test piece and record the results as the initial internal structure.

[0564] Place the purlin on the base surface of the rigid test base 5;

[0565] The profiled steel sheet 1 is fixed to the purlin using supports;

[0566] According to the installation method specified in the supplier's installation instructions, the test piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0567] Select a first test point 26, a second test point 27, a sixth test point 2b, and a seventh test point 2c on the first surface 21 and fill them into the test report. The sixth test point 2b and the first test point 26 are set symmetrically with respect to the geometric center of the first surface 21, and the second test point 27 and the seventh test point 2c are set symmetrically with respect to the geometric center of the first surface 21.

[0568] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time.

[0569] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0570] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0571] Select a third test point 28 on the first surface 21 and fill it in the test report;

[0572] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0573] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0574] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0575] The eighth test point 2d is selected on the first surface 21 and entered into the test report. The eighth test point 2d and the third test point 28 are set symmetrically with respect to the geometric center of the first surface 21.

[0576] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0577] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0578] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0579] When the photovoltaic module 2 is fixedly connected to the profiled steel sheet 1 by the clamp 3, the fourth test point 29 and the fifth test point 2a are selected on the first surface 21 and filled in the test report;

[0580] The load block 4 is placed on the fourth test point 29. The load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is placed on the fifth test point 2a. The load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0581] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0582] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0583] Select the ninth test point 2e and the tenth test point 2f on the first surface 21 and fill them into the test report. The ninth test point 2e and the fourth test point 29 are set symmetrically with respect to the geometric center of the first surface 21, and the tenth test point 2f and the fifth test point 2a are set symmetrically with respect to the geometric center of the first surface 21.

[0584] The load block 4 is placed on the ninth test point 2e. The load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is placed on the tenth test point 2f. The load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0585] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0586] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0587] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0588] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0589] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0590] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0591] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0592] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0593] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0594] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0595] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0596] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0597] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0598] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the test piece is qualified for stepping performance; if at least one of the appearance inspection and performance test is unqualified, the test piece is unqualified for stepping performance.

[0599] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0600] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0601] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0602] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0603] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0604] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0605] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0606] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0607] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0608] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0609] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0610] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0611] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0612] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0613] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0614] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0615] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0616] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0617] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0618] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0619] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0620] like Figure 20 As shown, an example is provided to illustrate the photovoltaic module testing method in the fourth embodiment:

[0621] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0622] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0623] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0624] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0625] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0626] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0627] Perform EL testing on the test piece and record the results as the initial internal structure.

[0628] Place the purlin on the base surface of the rigid test base 5;

[0629] The profiled steel sheet 1 is fixed to the purlin using supports;

[0630] According to the installation method specified in the supplier's installation instructions, the reference piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0631] Select the first test point 26, the second test point 27, and the third test point 28 on the first surface 21 and fill them in the test report;

[0632] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0633] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0634] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0635] Select the sixth test point 2b, the seventh test point 2c, and the eighth test point 2d on the first surface 21 and fill them in the test report;

[0636] The load block 4 is placed on the sixth test point 2b. The load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c. The load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the eighth test point 2d. The load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0637] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0638] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0639] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0640] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0641] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0642] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0643] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0644] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0645] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0646] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0647] Perform EL testing on the reference component after loading, record the results as internal structural load, and fill them into the test report;

[0648] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change of the internal structure of the reference part after loading;

[0649] Perform performance tests on the reference component under load, record the results as load performance test results, and fill them into the test report;

[0650] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the reference part after loading; if both the appearance inspection and performance test are qualified, the step performance of the reference part is qualified; if at least one of the appearance inspection and performance test is unqualified, the step performance of the reference part is unqualified.

[0651] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0652] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0653] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0654] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0655] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0656] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0657] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0658] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0659] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0660] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0661] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0662] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0663] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0664] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0665] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0666] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0667] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0668] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0669] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0670] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0671] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0672] like Figure 20 As shown, an example is provided to illustrate the photovoltaic module testing method in the fifth embodiment:

[0673] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0674] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0675] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0676] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0677] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0678] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0679] Perform EL testing on the test piece and record the results as the initial internal structure.

[0680] Place the purlin on the base surface of the rigid test base 5;

[0681] The profiled steel sheet 1 is fixed to the purlin using supports;

[0682] According to the installation method specified in the supplier's installation instructions, the reference piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0683] Select a first test point 26, a second test point 27, a third test point 28, a sixth test point 2b, a seventh test point 2c, and an eighth test point 2d on the first surface 21 and fill them in the test report. The sixth test point 2b and the first test point 26 are set symmetrically along the geometric center of the first surface 21, the seventh test point 2c and the second test point 27 are set symmetrically along the geometric center of the first surface 21, and the eighth test point 2d and the third test point 28 are set symmetrically along the geometric center of the first surface 21.

[0684] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time. The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0685] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0686] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0687] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0688] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0689] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0690] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0691] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0692] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0693] Perform a visual inspection on the reference part after loading, record the visual load results, and fill them in the test report;

[0694] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the reference part after the load; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0695] Perform EL testing on the reference component after loading, record the results as internal structural load, and fill them into the test report;

[0696] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change of the internal structure of the reference part after loading;

[0697] Perform performance tests on the reference component under load, record the results as load performance test results, and fill them into the test report;

[0698] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the reference part after loading; if both the appearance inspection and performance test are qualified, the step performance of the reference part is qualified; if at least one of the appearance inspection and performance test is unqualified, the step performance of the reference part is unqualified.

[0699] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0700] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0701] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0702] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0703] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0704] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0705] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0706] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0707] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0708] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0709] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0710] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0711] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0712] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0713] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0714] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0715] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0716] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0717] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0718] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0719] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0720] like Figure 20 As shown, the photovoltaic module testing method in the sixth embodiment is illustrated by example:

[0721] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0722] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0723] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0724] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0725] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0726] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0727] Perform EL testing on the test piece and record the results as the initial internal structure.

[0728] Place the purlin on the base surface of the rigid test base 5;

[0729] The profiled steel sheet 1 is fixed to the purlin using supports;

[0730] According to the installation method specified in the supplier's installation instructions, the photovoltaic module 2 is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0731] Select the first test point 26, the second test point 27, the fourth test point 29 and the fifth test point 2a on the first surface 21 and fill them in the test report;

[0732] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is placed on the fifth test point 2a, and the load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time.

[0733] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0734] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0735] Select the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f on the first surface 21, and fill them in the test report;

[0736] The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0737] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0738] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0739] Select a third test point 28 on the first surface 21 and fill it in the test report;

[0740] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0741] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0742] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0743] The eighth test point 2d is selected on the first surface 21 and entered into the test report. The eighth test point 2d and the third test point 28 are set symmetrically with respect to the geometric center of the first surface 21.

[0744] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0745] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0746] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0747] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0748] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0749] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0750] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0751] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0752] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0753] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0754] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0755] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0756] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0757] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0758] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the test piece is qualified for stepping performance; if at least one of the appearance inspection and performance test is unqualified, the test piece is unqualified for stepping performance.

[0759] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on both the reference piece and the test piece after loading. The specific steps are as follows:

[0760] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0761] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0762] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0763] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0764] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0765] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0766] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0767] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0768] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0769] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0770] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0771] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0772] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0773] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0774] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0775] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0776] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0777] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0778] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0779] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0780] like Figure 20 As shown, an example is provided to illustrate the photovoltaic module testing method in the seventh embodiment:

[0781] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0782] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0783] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0784] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0785] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0786] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0787] Perform EL testing on the test piece and record the results as the initial internal structure.

[0788] Place the purlin on the base surface of the rigid test base 5;

[0789] The profiled steel sheet 1 is fixed to the purlin using supports;

[0790] According to the installation method specified in the supplier's installation instructions, the test piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0791] Select the first test point 26, the second test point 27, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the ninth test point 2e, and the tenth test point 2f on the first surface 21, and fill them in the test report. The sixth test point 2b and the first test point 26 are set symmetrically along the geometric center of the first surface 21. The seventh test point 2c and the second test point 27 are set symmetrically along the geometric center of the first surface 21. The ninth test point 2e and the fourth test point 29 are set symmetrically along the geometric center of the first surface 21. The tenth test point 2f and the fifth test point 2a are set symmetrically along the geometric center of the first surface 21.

[0792] The load block 4 is placed on the first test point 26, and the load block 4 applies a preset load to the first test point 26 and maintains it for a preset time. The load block 4 is placed on the second test point 27, and the load block 4 applies a preset load to the second test point 27 and maintains it for a preset time. The load block 4 is placed on the fourth test point 29, and the load block 4 applies a preset load to the fourth test point 29 and maintains it for a preset time. The load block 4 is placed on the fifth test point 2a, and the load block 4 applies a preset load to the fifth test point 2a and maintains it for a preset time. The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0793] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0794] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0795] Select a third test point 28 on the first surface 21 and fill it in the test report;

[0796] The load block 4 is placed on the third test point 28, and the load block 4 applies a preset load to the third test point 28 and maintains it for a preset time.

[0797] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0798] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0799] The eighth test point 2d is selected on the first surface 21 and entered into the test report. The eighth test point 2d and the third test point 28 are set symmetrically with respect to the geometric center of the first surface 21.

[0800] The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time.

[0801] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0802] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0803] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0804] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0805] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0806] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0807] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0808] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0809] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0810] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0811] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0812] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0813] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0814] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the test piece is qualified for stepping performance; if at least one of the appearance inspection and performance test is unqualified, the test piece is unqualified for stepping performance.

[0815] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on the reference piece and the test piece after being loaded. The specific steps are as follows:

[0816] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0817] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0818] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0819] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0820] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0821] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0822] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0823] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0824] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0825] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0826] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0827] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0828] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0829] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0830] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0831] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0832] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0833] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0834] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with the reference piece.

[0835] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0836] like Figure 20As shown, an example is provided to illustrate the photovoltaic module testing method in the eighth embodiment:

[0837] At least six photovoltaic modules 2 of the same type and BOM are randomly selected from the production line. The multiple photovoltaic modules 2 are divided into three groups of the same number (the number of groups of photovoltaic modules 2 is not less than the number of comprehensive aging test sequences). In each group, one is used as a reference and the rest are used as test pieces. Taking nine photovoltaic modules 2 as an example, the photovoltaic modules 2 are divided into the first group, the second group and the third group. The first group, the second group and the third group each contain three photovoltaic modules 2.

[0838] MQT01: Perform a visual inspection on the test piece and record it as the initial visual result;

[0839] MQT19.1: Expose all photovoltaic modules 2 to sunlight to bring them to a steady state;

[0840] MQT06.1: Perform IV testing on the test piece under STC conditions and record the results as the initial power test results;

[0841] MQT03: Perform insulation testing on the test piece and record the results as the initial insulation test results;

[0842] MQT15: Perform a wet leakage current test on the test piece and record it as the initial wet leakage current test result;

[0843] Perform EL testing on the test piece and record the results as the initial internal structure.

[0844] Place the purlin on the base surface of the rigid test base 5;

[0845] The profiled steel sheet 1 is fixed to the purlin using supports;

[0846] According to the installation method specified in the supplier's installation instructions, the test piece is fixed on the profiled steel sheet 1 to form a photovoltaic profiled steel sheet component;

[0847] Select the first test point 26, the second test point 27, the third test point 28, the fourth test point 29, the fifth test point 2a, the sixth test point 2b, the seventh test point 2c, the eighth test point 2d, the ninth test point 2e, and the tenth test point 2f on the first surface 21, and fill them in the test report. The sixth test point 2b and the first test point 26 are set symmetrically along the geometric center of the first surface 21. The seventh test point 2c and the second test point 27 are set symmetrically along the geometric center of the first surface 21. The eighth test point 2d and the third test point 28 are set symmetrically along the geometric center of the first surface 21. The ninth test point 2e and the fourth test point 29 are set symmetrically along the geometric center of the first surface 21. The tenth test point 2f and the fifth test point 2a are set symmetrically along the geometric center of the first surface 21.

[0848] The load block 4 is placed on the first test point 26, and a preset load is applied to the first test point 26 and maintained for a preset time. The load block 4 is then placed on the second test point 27, and a preset load is applied to the second test point 27 and maintained for a preset time. The load block 4 is then placed on the third test point 28, and a preset load is applied to the third test point 28 and maintained for a preset time. The load block 4 is then placed on the fourth test point 29, and a preset load is applied to the fourth test point 29 and maintained for a preset time. Finally, the load block 4 is placed on the fifth test point 2a, and a preset load is applied to the fifth test point 2a and maintained for a preset time. The load block 4 is placed on the sixth test point 2b, and the load block 4 applies a preset load to the sixth test point 2b and maintains it for a preset time. The load block 4 is placed on the seventh test point 2c, and the load block 4 applies a preset load to the seventh test point 2c and maintains it for a preset time. The load block 4 is placed on the eighth test point 2d, and the load block 4 applies a preset load to the eighth test point 2d and maintains it for a preset time. The load block 4 is placed on the ninth test point 2e, and the load block 4 applies a preset load to the ninth test point 2e and maintains it for a preset time. The load block 4 is placed on the tenth test point 2f, and the load block 4 applies a preset load to the tenth test point 2f and maintains it for a preset time.

[0849] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0850] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0851] Select the eleventh test point 2g on the first surface 21 and fill it in the test report;

[0852] The load block 4 is placed on the eleventh test point 2g. The load block 4 applies a preset load to the eleventh test point 2g and maintains it for a preset time.

[0853] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0854] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0855] Select the twelfth test point 2h on the first surface 21 and fill it in the test report;

[0856] The load block 4 is placed on the twelfth test point 2h, and the load block 4 applies a preset load to the twelfth test point 2h and maintains it for a preset time.

[0857] Perform a visual inspection on the test piece after loading, record the visual load results, and fill them in the test report;

[0858] Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the test piece after loading; if the appearance is unqualified, stop the test; if the appearance is qualified, continue the test.

[0859] Perform EL testing on the loaded test piece, record the results as internal structural load, and fill them into the test report;

[0860] Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change in the internal structure of the test piece after loading;

[0861] Perform performance tests on the test specimen after loading, record the results as load performance test results, and fill them in the test report;

[0862] Compare and analyze the initial performance test results with the load performance test results to determine the degree of performance change of the test piece after loading; if both the appearance inspection and performance test are qualified, the test piece is qualified for stepping performance; if at least one of the appearance inspection and performance test is unqualified, the test piece is unqualified for stepping performance.

[0863] When the test piece passes the test of being able to be stepped on, a comprehensive aging test is performed on both the reference piece and the test piece after loading. The specific steps are as follows:

[0864] The first group of photovoltaic modules 2 was subjected to a comprehensive aging test according to the first sequence, which included dynamic load testing, thermal cycling testing, and wet-freeze testing. The specific steps were as follows:

[0865] MQT20: Performs dynamic load tests on test specimens and reference specimens;

[0866] Perform EL testing on the test specimens and record the results as the first reference aging results for the first group, and fill them into the test report;

[0867] Perform EL testing on the test pieces and record the results as the first load aging result of the first group, and fill them into the test report;

[0868] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 50 cycles);

[0869] MQT12: Perform wet-freeze testing on test pieces and reference pieces (temperature between -40°C and 85°C, relative humidity of 85%RH, 10 cycles);

[0870] The aged reference parts were subjected to visual inspection, EL testing, and IV testing, and the results were recorded as the second reference aging results.

[0871] After aging, the test pieces are subjected to visual inspection, EL test and IV test, and the results are recorded as the second load aging results and entered into the test report.

[0872] By comparing and analyzing the second reference aging results and the second load aging results, the anti-aging performance of the test piece after the first load is determined compared with that of the reference piece.

[0873] Simultaneously, the second group of photovoltaic modules 2 will undergo comprehensive aging tests according to the second sequence, which includes a damp heat test. The specific steps are as follows:

[0874] MQT13: Perform damp heat testing on test pieces and reference pieces (temperature 85°C, relative humidity 85%RH, test time 1000 hours);

[0875] The second set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0876] The second group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0877] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the second set of test pieces after load was determined compared with that of the reference pieces.

[0878] Meanwhile, the third group of photovoltaic modules 2 will undergo comprehensive aging tests according to the third sequence, which includes thermal cycling tests. The specific steps are as follows:

[0879] MQT11: Perform thermal cycling tests on test and reference parts (cycled between -40°C and 85°C for 200 cycles);

[0880] The third set of aged reference parts underwent visual inspection, EL testing, and IV testing, and the results were recorded as reference aging results.

[0881] The third group of aged test pieces underwent visual inspection, EL testing, and IV testing, and the results were recorded as load aging results and entered into the test report.

[0882] By comparing and analyzing the reference aging results and the load aging results, the anti-aging performance of the test piece after the third load was determined compared with that of the reference piece.

[0883] A comprehensive comparative analysis was conducted on the anti-aging performance of the first, second, and third groups to comprehensively judge the anti-aging performance of the test pieces after loading compared with the reference pieces.

[0884] In any of the above embodiments, the preset time T satisfies: 20min ≤ T. Specifically, the test time can be 20min, 30min, 40min, 50min, 60min, 70min, 80min, 90min, 100min, etc. In this embodiment, when the operator stands on the surface of the photovoltaic module 2 for installation, the operator needs to be in contact with the photovoltaic module 2 for a long time. If the preset time is short, i.e., T < 20min, the reliability of the test results will be poor. Therefore, in this embodiment, 20min ≤ T can improve the reliability of the test results of the photovoltaic module 2.

[0885] In any of the above embodiments, a series of reliability tests are conducted on the photovoltaic module 2 in accordance with the test requirements in IEC 61215 and IEC 61730 to determine the impact of stepping on and after stepping on the performance of the building photovoltaic glass module.

[0886] It should be noted that a portion of this patent application contains copyrighted material. The copyright holder retains all rights except for making copies of the contents of patent documents or records from the patent office.

Claims

1. A photovoltaic module testing method for testing the treadability of a photovoltaic module (2) mounted on a profiled steel sheet (1), characterized in that, The photovoltaic module (2) includes a first connecting part (23), a second connecting part (24), and a suspended part (25) distributed along its length or width direction. The first connecting part (23) is located at the edge of the photovoltaic module (2). The first connecting part (23) is bonded and fixed to the profiled steel sheet (1), or the first connecting part (23) is fixedly connected to the profiled steel sheet (1) by fixing blocks. The number of fixing blocks is at least two along the length and / or width direction of the photovoltaic module (2). The second connecting part (24) is located at the edge of the profiled steel sheet (1). Above the angled portion (14) of the plate (1), for connection with the angled portion (14), the suspended portion (25) is located between the first connecting portion (23) and the second connecting portion (24), and / or, the suspended portion (25) is located between adjacent second connecting portions (24), the edge of the photovoltaic module (2) at the suspended portion (25) is a suspended edge (251); along the thickness direction of the photovoltaic module (2), the surface of the photovoltaic module (2) away from the profiled steel plate (1) is a first surface (21); the photovoltaic module testing method includes: The photovoltaic module (2) is installed on the profiled steel sheet (1); On the first surface (21), select a first test point (26), a second test point (27), a third test point (28), a fourth test point (29), a fifth test point (2a), a sixth test point (2b), a seventh test point (2c), an eighth test point (2d), a ninth test point (2e), and a tenth test point (2f). Of the first test point (26) and the second test point (27), one is located at the corner of the photovoltaic module (2), and the other is located at the suspended edge (251). Of the fourth test point (29) and the fifth test point (2a), one is located at the edge of the fixing block, and the other is located at two adjacent points along the length of the photovoltaic module (2). Between the fixed blocks, the sixth test point (2b) and the first test point (26) are symmetrically arranged around the geometric center of the first surface (21), the seventh test point (2c) and the second test point (27) are symmetrically arranged around the geometric center of the first surface (21), the eighth test point (2d) and the third test point (28) are symmetrically arranged around the geometric center of the first surface (21), the ninth test point (2e) and the fourth test point (29) are symmetrically arranged around the geometric center of the first surface (21), and the tenth test point (2f) and the fifth test point (2a) are symmetrically arranged around the geometric center of the first surface (21). When the first connecting part (23) is bonded and fixed to the profiled steel sheet (1), the load block (4) is placed on the first test point (26), the second test point (27), the third test point (28), the sixth test point (2b), the seventh test point (2c), and the eighth test point (2d), respectively. The load block (4) applies a preset load to the photovoltaic module (2) and maintains it for a preset time; or, When the first connecting part (23) is fixedly connected to the profiled steel sheet (1) through the fixing block, the load block (4) is placed on the first test point (26), the second test point (27), the fourth test point (29), the fifth test point (2a), the sixth test point (2b), the seventh test point (2c), the ninth test point (2e) and the tenth test point (2f), respectively. The load block (4) applies a preset load to the photovoltaic module (2) and maintains it for a preset time.

2. The photovoltaic module testing method according to claim 1, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21). When the load block (4) is placed at the corner, the test surface (41) covers the first test point (26) or the second test point (27). In the length direction of the photovoltaic module (2), the minimum distance L1 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L1≤20mm. In the width direction of the photovoltaic module (2), the minimum distance L2 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L2≤20mm.

3. The photovoltaic module testing method according to claim 2, characterized in that, In the length direction of the photovoltaic module (2), the minimum distance L1 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L1≤10mm. In the width direction of the photovoltaic module (2), the minimum distance L2 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L2≤10mm.

4. The photovoltaic module testing method according to claim 1, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21). When the load block (4) is placed at the suspended edge (251), the test surface (41) covers the first test point (26) or the second test point (27). In the width direction of the photovoltaic module (2), the load block (4) is located in the middle of the suspended edge (251). In the length direction of the photovoltaic module (2), the minimum distance L3 between the outer contour of the test surface (41) and the suspended edge (251) satisfies: 0mm≤L3≤20mm.

5. The photovoltaic module testing method according to claim 4, characterized in that, In the length direction of the photovoltaic module (2), the minimum distance L3 between the outer contour of the test surface (41) and the suspended edge (251) satisfies: 0mm≤L3≤10mm.

6. The photovoltaic module testing method according to claim 1, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21). When the load block (4) is placed at the third test point (28), the minimum distance L4 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) in the length direction of the photovoltaic module (2) satisfies: 0mm≤L4≤20mm. In the width direction of the photovoltaic module (2), the minimum distance L5 between the outer contour of the test surface (41) and the edge of the second connection part (24) satisfies: 0mm≤L5≤20mm.

7. The photovoltaic module testing method according to claim 6, characterized in that, In the length direction of the photovoltaic module (2), the minimum distance L4 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L4≤10mm. In the width direction of the photovoltaic module (2), the minimum distance L5 between the outer contour of the test surface (41) and the edge of the second connecting part (24) satisfies: 0mm≤L5≤10mm.

8. The photovoltaic module testing method according to claim 1, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21). When the load block (4) is placed at the edge of the fixed block, the test surface (41) covers the fourth test point (29) or the fifth test point (2a). In the length direction of the photovoltaic module (2), the minimum distance L6 between the outer contour of the test surface (41) and the fixed block satisfies: 0mm≤L6≤20mm. In the width direction of the photovoltaic module (2), the minimum distance L7 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L7≤20mm.

9. The photovoltaic module testing method according to claim 8, characterized in that, In the length direction of the photovoltaic module (2), the minimum distance L6 between the outer contour of the test surface (41) and the fixed block satisfies: 0mm≤L6≤10mm. In the width direction of the photovoltaic module (2), the minimum distance L7 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L7≤10mm.

10. The photovoltaic module testing method according to claim 1, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21). When the load block (4) is placed between adjacent fixed blocks in the length and / or width direction of the photovoltaic module (2), the test surface (41) covers the fourth test point (29) or the fifth test point (2a). In the width direction of the photovoltaic module (2), the minimum distance L8 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L8≤20mm.

11. The photovoltaic module testing method according to claim 10, characterized in that, In the width direction of the photovoltaic module (2), the minimum distance L8 between the outer contour of the test surface (41) and the edge of the photovoltaic module (2) satisfies: 0mm≤L8≤10mm.

12. The photovoltaic module testing method according to claim 1, characterized in that, When the first connecting part (23) is fixedly connected to the profiled steel sheet (1) through the fixing block, the photovoltaic module testing method further includes: The load block (4) is placed on the third test point (28), and the load block (4) applies a preset load to the third test point (28) and maintains it for a preset time. The load block (4) is placed on the eighth test point (2d), and the load block (4) applies a preset load to the eighth test point (2d) and maintains it for a preset time.

13. The photovoltaic module testing method according to claim 1, characterized in that, The photovoltaic module testing method includes: An eleventh test point (2g) is selected on the first surface (21), and the eleventh test point (2g) is located at the geometric center of the first surface (21); The load block (4) is placed on the eleventh test point (2g), and the load block (4) applies a preset load to the eleventh test point (2g) and maintains it for a preset time.

14. The photovoltaic module testing method according to claim 1, characterized in that, The photovoltaic module testing method includes: A twelfth test point (2h) is selected on the first surface (21). The twelfth test point (2h) and the center of the suspended edge (251) are distributed along the length direction of the photovoltaic module (2). The number of the twelfth test point (2h) is one. Alternatively, the twelfth test point (2h) is symmetrically arranged along the length direction and / or width direction of the photovoltaic module (2), and / or the twelfth test point (2h) is symmetrically arranged along the geometric center of the first surface (21). The load block (4) is placed on the twelfth test point (2h), and the load block (4) applies a preset load to the twelfth test point (2h) and maintains it for a preset time.

15. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, The load block (4) includes a test surface (41) for abutting against the first surface (21), and the area S of the test surface (41) satisfies: 50cm2≤S≤400cm2.

16. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, The preset load F satisfies: 50KG≤F≤160KG.

17. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, The preset time T satisfies: 20min≤T.

18. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, The steps of mounting the photovoltaic module (2) on the profiled steel sheet (1) include: Place the purlins on the base surface; The profiled steel sheet (1) is fixed to the purlin by a bracket; The photovoltaic module (2) is fixed on the profiled steel plate (1) to form a photovoltaic profiled steel plate component.

19. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, Prior to the step of mounting the photovoltaic module (2) onto the profiled steel sheet (1), the photovoltaic module testing method includes: The photovoltaic module (2) is subjected to visual inspection, and the results are recorded as the initial visual results. After each step of the load block (4) applying a preset load to the photovoltaic module (2) and maintaining it for a preset time, the photovoltaic module testing method includes: The photovoltaic module (2) under load is visually inspected and recorded as the visual load result; Compare and analyze the initial appearance results and the appearance load results, and determine the degree of change in the appearance of the photovoltaic module (2) after the load.

20. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, Prior to the step of mounting the photovoltaic module (2) onto the profiled steel sheet (1), the photovoltaic module testing method includes: The photovoltaic module (2) was subjected to EL testing, and the results were recorded as the initial results of the internal structure. After the load block (4) applies a preset load to all test points of the photovoltaic module (2) and maintains it for a preset time, the photovoltaic module testing method includes: The photovoltaic module (2) under load was subjected to EL testing, and the results were recorded as the internal structural load results. Compare and analyze the initial results of the internal structure and the load results of the internal structure, and determine the degree of change of the internal structure of the photovoltaic module (2) after the load.

21. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, Prior to the step of mounting the photovoltaic module (2) onto the profiled steel sheet (1), the photovoltaic module testing method includes: The photovoltaic module (2) was subjected to performance testing, and the results were recorded as the initial performance test results. After the load block (4) applies a preset load to all test points of the photovoltaic module (2) and maintains it for a preset time, the photovoltaic module testing method includes: The photovoltaic module (2) under load was subjected to a performance test, and the result was recorded as the load performance test result. By comparing and analyzing the initial performance test results with the load performance test results, the degree of performance change of the photovoltaic module (2) after the load is applied is determined.

22. The photovoltaic module testing method according to claim 21, characterized in that, The performance tests include one or more of the following: IV test, insulation test, and wet leakage current test.

23. The photovoltaic module testing method according to any one of claims 1 to 14, characterized in that, The photovoltaic module testing method includes: Take at least two of the photovoltaic modules (2), one of which is a reference piece and the other is a test piece; The load block (4) is placed on the first surface (21) of the test piece, and the load block (4) applies a preset load to the test piece and maintains it for a preset time; After the load block (4) applies a preset load to all test points of the test piece and maintains it for a preset time, the photovoltaic module testing method includes: A comprehensive aging test was performed on the reference piece and the test piece after loading. Defect tests were performed on the aged reference parts and recorded as reference aging results. Defect tests were performed on the aged test parts and recorded as trampling aging results. The reference aging results and the trampling aging results were compared and analyzed.

24. The photovoltaic module testing method according to claim 23, characterized in that, The defect testing includes one or more of the following: visual inspection, EL testing, and IV testing. The comprehensive aging test includes one or more of the following: thermal cycling test, wet freeze test, and wet heat cycling test.

25. A testing method for a photovoltaic profiled steel sheet component, the photovoltaic profiled steel sheet component comprising a profiled steel sheet (1) and a photovoltaic module (2), wherein the photovoltaic module (2) is bonded and fixed to the profiled steel sheet (1), or the photovoltaic module (2) is fixedly connected to the profiled steel sheet (1) by a fixing block, characterized in that, The testing method for photovoltaic profiled steel sheet components includes: The photovoltaic module (2) is subjected to a step-ability test according to any one of claims 1 to 24 using the photovoltaic module testing method.

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