CN115987215A - Photovoltaic module testing method - Google Patents
Photovoltaic module testing method Download PDFInfo
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- CN115987215A CN115987215A CN202211600289.1A CN202211600289A CN115987215A CN 115987215 A CN115987215 A CN 115987215A CN 202211600289 A CN202211600289 A CN 202211600289A CN 115987215 A CN115987215 A CN 115987215A
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- 238000012360 testing method Methods 0.000 title claims abstract description 512
- 230000007547 defect Effects 0.000 claims abstract description 90
- 238000007689 inspection Methods 0.000 claims abstract description 62
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 48
- 239000010959 steel Substances 0.000 claims abstract description 48
- 238000000034 method Methods 0.000 claims abstract description 25
- 230000032683 aging Effects 0.000 claims description 32
- 238000011056 performance test Methods 0.000 claims description 24
- 230000007613 environmental effect Effects 0.000 claims description 22
- 239000000463 material Substances 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 238000004458 analytical method Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 8
- 210000002683 foot Anatomy 0.000 description 7
- 238000011179 visual inspection Methods 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 230000003245 working effect Effects 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005401 electroluminescence Methods 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005336 cracking Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 210000004744 fore-foot Anatomy 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The application relates to a photovoltaic module testing method, which is used for testing the trampling resistance of a photovoltaic module and comprises the following steps: performing defect inspection test on the photovoltaic module, and recording the result as an initial result; mounting the photovoltaic module on the color steel tile module; applying a preset load to the photovoltaic component at a preset frequency by using a testing device; carrying out defect inspection test on the loaded photovoltaic module, and recording the defect inspection test as a load result; and comparing and analyzing the initial result and the load result. In this application, testing arrangement applys the preset load to photovoltaic module with preset frequency, can simulate the operator and step on the process at the photovoltaic module surface, and initial result of contrastive analysis and load result can judge whether the structure behind the photovoltaic module load satisfies photovoltaic module's normal work demand to the realization is to photovoltaic module's the judgement of trampling resistance performance, so that follow-up adjustment to photovoltaic module's structure, material, processing technology isoparametric.
Description
Technical Field
The application relates to the technical field of photovoltaic modules, in particular to a photovoltaic module testing method.
Background
The photovoltaic component includes various steel tile subassembly and installs in the photovoltaic module of various steel tile subassembly, and at the in-process of installation photovoltaic module, the operator need step on photovoltaic module to in-process in order to operate. In the trampling process, hidden cracking and breaking risks are prone to occurring at corners of the photovoltaic module and suspended positions of the photovoltaic module and the color steel tiles after the photovoltaic module and the color steel tiles are connected.
Therefore, after the photovoltaic module is processed and produced, whether the trampling resistance of the photovoltaic module meets the requirement needs to be judged so as to adjust the parameters of the photovoltaic module, such as the material, the structure, the processing technology and the like.
Disclosure of Invention
The application provides a photovoltaic module testing method which can test the trampling resistance of a photovoltaic module.
The application provides a photovoltaic module testing method for testing the trampling resistance of a photovoltaic module, which comprises the following steps:
performing defect inspection test on the photovoltaic module, and recording the result as an initial result;
mounting the photovoltaic module on the color steel tile module;
applying a preset load to the photovoltaic component at a preset frequency by using a testing device;
carrying out defect inspection test on the loaded photovoltaic module, and recording the defect inspection test as a load result;
and comparing and analyzing the initial result and the load result.
In this application, testing arrangement applys the preset load to photovoltaic module with preset frequency, can simulate the operator and step on the process at the photovoltaic module surface, and initial result of contrastive analysis and load result can judge whether the structure behind the photovoltaic module load satisfies photovoltaic module's normal work demand to the realization is to photovoltaic module's the judgement of trampling resistance performance, so that follow-up adjustment to photovoltaic module's structure, material, processing technology isoparametric.
In some embodiments, the photovoltaic module comprises a connecting part and a hanging part, wherein the connecting part is used for contacting with the color steel tile assembly, and the hanging part is used for enclosing a cavity with the color steel tile;
the photovoltaic module is provided with a first test surface, a second test surface and a third test surface, the first test surface is positioned at the edge of the connecting part, the second test surface is positioned at the suspended part, and the third test surface is positioned at the corner of the photovoltaic module;
the testing device comprises a driving assembly and a testing piece, wherein the driving assembly can drive the testing piece to move along the length direction, the width direction and the thickness direction of the photovoltaic assembly;
the method for applying the preset load to the photovoltaic component at the preset frequency by using the testing device comprises the following steps of:
the driving assembly drives the test piece to move along the length direction and/or the width direction of the photovoltaic assembly, and meanwhile, the driving assembly drives the test piece to move along the thickness direction of the photovoltaic assembly at a preset frequency;
the test piece applies a predetermined load to at least one of the first test surface, the second test surface, and the third test surface.
In some embodiments, the step of applying a predetermined load to the photovoltaic module at a predetermined frequency using the testing device comprises:
during movement of the test piece, the test piece applies a predetermined load to the first test surface, the second test surface, and the third test surface.
In some embodiments, the photovoltaic module is further provided with a fourth test surface, the surfaces outside the first, second and third test surfaces being fourth test surfaces;
the method for applying the preset load to the photovoltaic component at the preset frequency by using the testing device comprises the following steps:
during the movement of the test piece, the test piece applies a predetermined load to the fourth test surface.
In some embodiments, the test pieces comprise a first test piece and a second test piece which are distributed along the width direction of the photovoltaic module, and the first test piece and the second test piece are respectively connected with the driving module;
the step that the driving assembly drives the test piece to move along the thickness direction of the photovoltaic assembly at a preset frequency comprises the following steps:
along the thickness direction of the photovoltaic module, the driving assembly drives the first test piece and the second test piece to alternately move.
In some embodiments, the time t from the contact of the first test piece with the photovoltaic module to the contact of the second test piece with the photovoltaic module satisfies: t is more than 0 and less than or equal to 5s;
the preset frequency is less than or equal to 5 seconds/time.
In some embodiments, the defect inspection test comprises a visual inspection;
the method for testing the photovoltaic module for defect inspection and recording the initial result comprises the following steps:
inspecting the appearance of the photovoltaic module, and recording the number and the size of appearance defects of the photovoltaic module as an appearance initial result;
the method comprises the following steps of carrying out defect inspection test on the loaded photovoltaic module, and recording the defect inspection test as a load result:
inspecting the appearance of the loaded photovoltaic module, and recording the number and the size of appearance defects of the loaded photovoltaic module as an appearance load result;
the step of comparing the analysis initial result with the load result comprises:
and comparing and analyzing the appearance initial result and the appearance load result, and judging the change degree of the appearance of the loaded photovoltaic module.
In some embodiments, the appearance test includes an external defect inspection and/or an internal defect test.
In some embodiments, the defect inspection test comprises a performance test;
the method for testing the photovoltaic module for defect inspection and recording the initial result comprises the following steps:
testing the performance of the photovoltaic module, and recording the performance as an initial performance test result;
the method comprises the following steps of carrying out defect inspection test on the loaded photovoltaic module, and recording the defect inspection test as a load result:
testing the working performance of the photovoltaic module after the second load, and recording the result as a load performance test result;
and comparing and analyzing the initial performance test result and the load performance test result, and judging the change degree of the working performance of the loaded photovoltaic module.
In some embodiments, the defect inspection test comprises an environmental burn-in test;
the method for testing the photovoltaic module for defect inspection and recording the initial result comprises the following steps:
carrying out environmental aging test on the photovoltaic module, and recording the result as a result before aging;
the method comprises the following steps of carrying out defect inspection test on the loaded photovoltaic module, and recording the defect inspection test as a load result:
carrying out environmental aging test on the loaded photovoltaic module, and recording the result as an aged result;
the step of comparing and analyzing the pre-aging result and the post-aging result comprises:
and comparing and analyzing the initial environment result and the environment load result, and judging the environment aging degree of the loaded photovoltaic module.
In some embodiments, after the step of applying a preset load to the photovoltaic module by using the testing device and maintaining the preset load for a preset time, the photovoltaic module testing method comprises the following steps:
and carrying out IEC 61215-2MQT20 test on the photovoltaic module.
In some embodiments, the moving distance L3 of the test piece in the thickness direction of the photovoltaic module satisfies: l3 is more than or equal to 0 and less than or equal to 60mm.
In some embodiments, the preset load F satisfies: f is more than or equal to 50KG and less than or equal to 160KG.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.
Drawings
Fig. 1 is a schematic view of a connection structure of a photovoltaic member provided herein in one embodiment;
FIG. 2 is a top view of FIG. 1;
fig. 3 is a schematic view of a connection structure of a photovoltaic member provided herein in another embodiment;
FIG. 4 is a top view of the partial structure of FIG. 3;
FIG. 5 is a schematic structural diagram of a testing apparatus provided in the present application in one embodiment
FIG. 6 is a flow chart of a photovoltaic module testing method provided herein;
FIG. 7 is a flow diagram of the photovoltaic module testing method of FIG. 6 in one embodiment.
Reference numerals:
1-a photovoltaic module;
11-a first test point;
12-a second test point;
13-a connecting part;
14-a suspended portion;
15-a third test point;
2-color steel tile;
21-male rib;
22-female ribs;
23-a base plate;
24-a bending part;
25-angular run-out;
3-a cavity;
4-clamping;
5, a support;
6-a testing device;
61-test piece;
611-a first test piece;
612-a second test piece;
62-a base;
63-a frame;
64-first driver.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and together with the description, serve to explain the principles of the application.
Detailed Description
For better understanding of the technical solutions of the present application, the following detailed descriptions of the embodiments of the present application are provided with reference to the accompanying drawings.
It should be understood that the embodiments described are only a few embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terminology used in the embodiments of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the examples of this application and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that the term "and/or" as used herein is merely a relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
It should be noted that the directional terms such as "upper", "lower", "left", "right", etc. described in the embodiments of the present application are described in the angles shown in the drawings, and should not be construed as limiting the embodiments of the present application. In addition, in this context, it will also be understood that when an element is referred to as being "on" or "under" another element, it can be directly on "or" under "the other element or be indirectly on" or "under" the other element through intervening elements.
The embodiment of the application provides a photovoltaic component, and in one embodiment, the photovoltaic component comprises a photovoltaic module 1 and a mounting rack (not marked in the figure), wherein the photovoltaic module 1 is directly mounted on the ground or a building main body through the mounting rack so as to utilize solar energy to generate electricity to meet daily use requirements. The building main body includes, but is not limited to, a roof and walls of a production enterprise factory building, a warehouse and other buildings.
In another embodiment, as shown in fig. 1, the photovoltaic component comprises a plurality of color steel tile 2 assemblies and a photovoltaic assembly 1 connected with the color steel tile 2 assemblies, wherein the color steel tile 2 assemblies comprise color steel tiles 2 and a support 5, and the color steel tiles 2 are mounted on the ground or a building body through the support 5 so as to utilize solar energy to generate electricity to meet daily use requirements.
As shown in fig. 1 and 2, the photovoltaic member has a first direction X, a second direction Z and a third direction Y that are perpendicular to each other, the first direction X is a width direction of the color steel tile 2, the second direction Z is a thickness direction of the color steel tile 2, and the third direction Y is a length direction of the color steel tile 2.
The color steel tile 2 has a specific structure as shown in fig. 1, the color steel tile 2 includes a bottom plate 23, and a male rib 21 and a female rib 22 which are oppositely arranged on two sides of the bottom plate 23 along a first direction X, the male rib 21 is fixedly connected with the female rib 22 of the adjacent color steel tile 2 to form a lock seam, and both the male rib 21 and the female rib 22 are provided with a bending part 24 for connecting with the bottom plate 23; the bottom plate 23 is provided with an angular relief part 25 which protrudes upwards along the second direction Z, and the angular relief part 25 is positioned between the male rib 21 and the female rib 22 along the first direction X; be provided with on the bottom plate 23 along the bellied strengthening rib that makes progress of second direction Z, when the photovoltaic tile was used under strong wind environment, the air current flows through various steel tile 2 upper surfaces, make the pressure of various steel tile 2 upper surfaces reduce, make the upper surface of bottom plate 23 and lower surface have pressure difference, this moment, angle chi portion 25, local deformation can take place under pressure difference's effect for bottom plate 23 near strengthening rib and strengthening rib, in order to reduce various steel tile 2 and damage, the risk of adjacent various steel tile 2 connection failure, thereby the life of various steel tile 2 has been prolonged, and between adjacent various steel tile 2, the connection steadiness between various steel tile 2 and the roof has been promoted.
In addition, various steel tile subassembly still includes the protection film, and the protection film covers the surface at various steel tile 2 to the life of extension various steel tile 2.
As shown in fig. 1 to 4, the photovoltaic module 1 includes a connecting portion 13 and a suspended portion 14, the connecting portion 13 is used for contacting with the color steel tile 2 assembly, and the suspended portion 14 is used for enclosing a cavity 3 with the color steel tile 2. Wherein, connecting portion 13 includes first connecting portion (not marked in the figure) and second connecting portion (not marked in the figure), first connecting portion are used for with various steel tile 2 subassembly fixed connection, the second connecting portion are used for with various steel tile 2 butt.
Specifically, in an embodiment, as shown in fig. 1 and fig. 2, two sides of the photovoltaic module 1 are respectively bonded to the bent portions 24 on the male rib 21 and the female rib 22 along the first direction X, so as to simplify the connection manner between the photovoltaic module 1 and the color steel tile 2. At this time, the portion of the photovoltaic module 1 to be bonded to the bent portion 24 is the first connecting portion. In another embodiment, as shown in fig. 3 and 4, the color steel tile 2 assembly further includes a clamp 4, two ends of the photovoltaic assembly 1 are respectively connected to the clamp 4 along the first direction X, that is, the photovoltaic assembly 1 is fixed on the color steel tile 2 by the clamp 4, and at this time, a portion of the photovoltaic assembly 1, which is used for being connected to the clamp 4, is a first connecting portion.
In addition, be provided with the supporting part on the various steel tile 2, along second direction Z, the distance between supporting part and the photovoltaic module 1 is between 5mm-20mm, and when photovoltaic module 1 received the pressure on the second direction Z, photovoltaic module 1's local structure took place to deform and with the supporting part butt, and the supporting part can support photovoltaic module 1 to reduce the risk that photovoltaic module 1 damaged because of the deformation volume is too big, and at this moment, the part that is used for with the supporting part butt on the photovoltaic module 1 is the second connecting portion.
Specifically, in one embodiment, the supporting portion is an additional component arranged on the color steel tile 2, that is, the supporting portion is fixedly connected with the color steel tile 2; in another embodiment, the lockstitching or corner relief 25 of the color steel tile 2 is a support.
In the process of installing the photovoltaic component, the operator needs to walk on the surface of the photovoltaic module 1, at this moment, the first connecting portion of the photovoltaic module 1, the second connecting portion, the suspended portion 14 and the corners of the photovoltaic module 1 can be subjected to larger stress, therefore, before the photovoltaic module 1 is put into mass production and used, the connecting portion 13 of the photovoltaic module 1, the suspended portion 14 and the corners of the photovoltaic module 1 need to be trampled and tested, so that the photovoltaic module 1 can be adjusted, the material of the photovoltaic module 1 can be replaced, the production process and the like, the photovoltaic module 1 has stronger trampling resistance, and the service life of the photovoltaic module 1 is prolonged.
To this end, the embodiment of the present application provides a photovoltaic module testing method for testing the anti-stepping performance of the photovoltaic module 1, as shown in fig. 5, the testing method includes:
taking a photovoltaic module 1;
carrying out a defect inspection test on the photovoltaic module 1, and recording a test result as an initial result;
mounting the photovoltaic module 1 on a color steel tile module;
applying a preset load to the photovoltaic module 1 at a preset frequency by using the testing device 6;
carrying out a defect inspection test on the loaded photovoltaic module 1, and recording a test result as a load result;
and comparing and analyzing the initial result and the load result, and judging the change degree of the structure, the function and the like of the photovoltaic module 1 after the load.
In this application embodiment, testing arrangement 6 applys to photovoltaic module 1 with predetermineeing the frequency and predetermines the load, can simulate the process that the operator trampled on photovoltaic module 1 surface, photovoltaic module 1 after to the load carries out the defect inspection test, initial result of contrastive analysis and load result, can judge whether the structure after photovoltaic module 1 load satisfies photovoltaic module 1's normal work demand, thereby judge whether the operator stands and can influence photovoltaic module 1's normal work on photovoltaic module 1 surface, and then realize the judgement to photovoltaic module 1's anti-trampling performance, so that follow-up structure to photovoltaic module 1, the material, the adjustment of processing technology isoparametric.
As shown in fig. 5, the testing device 6 includes a base 62, a frame 63, a driving assembly and a testing piece 61, the photovoltaic assembly 1 can be directly placed on the base 62, or the photovoltaic assembly 1 is installed on the color steel tile 2, the color steel tile 2 is placed on the base 62, the frame 63 extends along the second direction Z, and the testing piece 61 is installed on the frame 63.
The driving assembly is configured to drive the testing device 61 to move in a first direction X, a second direction Z, and a third direction Y, and specifically, as shown in fig. 5, the driving assembly includes a first driving element 64, a second driving element (not shown), and a third driving element (not shown), where the first driving element 64 is capable of driving the testing device 61 to move in the second direction Z, the second driving element is capable of driving the testing device 61 to move in the first direction X, and the third driving element is capable of driving the testing device 61 to move in the third direction Y. In the testing process, the second driving part and the third driving part can drive the testing piece 61 to move along the first direction X and the third direction Y, and meanwhile, the first driving part 64 drives the testing piece 61 to move along the second direction Z at a preset frequency, so that the testing piece 61 applies preset loads to different positions on the surface of the photovoltaic module 1 at the preset frequency to simulate the stepping process of an operator on the photovoltaic module 1.
Specifically, the photovoltaic module 1 has a treadable surface, which includes a first testing surface located at an edge of the connecting portion 13, a second testing surface located at the suspended portion 14, and a third testing surface located at a corner of the photovoltaic module 1.
As shown in fig. 7, the step of applying a preset load to the photovoltaic module 1 at a preset frequency by using the testing device 6 comprises:
the driving assembly drives the testing part 61 to move along the first direction X and/or the third direction Y, and at the same time, the driving assembly drives the testing part 61 to move along the second direction Z at a predetermined frequency, so that the testing part 61 applies a predetermined load to at least one of the first testing surface, the second testing surface and the third testing surface at the predetermined frequency.
In this embodiment, in one test cycle of the test device 6, the test device 6 may apply a preset load to only one of the first test surface, the second test surface, and the third test surface, so as to simplify a motion trajectory of the test piece 61 in a horizontal plane surrounded by the first direction X and the third direction Y; alternatively, the testing device 6 may apply a preset load to at least two of the first testing surface, the second testing surface and the third testing surface in one testing period of the testing device 6, so as to test the treading resistance of the whole surface of the photovoltaic module 1.
Specifically, as shown in fig. 5, the test piece 61 includes a first test piece 611 and a second test piece 612 distributed along the first direction X, and the first driving member 64 is capable of driving the first test piece 611 and the second test piece 612 to move along the second direction Z, respectively. The step of driving the test piece 61 by the driving assembly to move along the first direction X and/or the third direction Y, and the step of driving the test piece 61 by the driving assembly to move along the second direction Z at the predetermined frequency includes:
the second driving element and the third driving element drive the first test piece 611 and the second test piece 612 to synchronously move along the first direction X and/or the third direction Y;
the first driving member 64 drives the first test piece 611 and the second test piece 612 to move alternately along the second direction Z at a predetermined frequency.
In the present embodiment, the first testing member 611 simulates a left foot of an operator, the second testing member 612 simulates a right foot of the operator, and the first driving member 64 drives the first testing member 611 and the second testing member 612 to alternately move, so as to simulate the alternate stepping of the left and right feet of the operator on the surface of the photovoltaic module 1, thereby further improving the accuracy and reliability of the testing result.
The time interval t from the contact of the first test piece 611 and the photovoltaic module 1 to the contact of the second test piece 612 and the photovoltaic module 1 satisfies: t is more than 0 and less than or equal to 5s, namely the preset frequency is less than or equal to 5 seconds/time, and specifically, the preset frequency can be 2 seconds/time, 3 seconds/time and 4 seconds/time.
If t is more than 5s, the frequency of the preset load applied to the photovoltaic module 1 by the testing device 6 is slow, so that the difference between the frequency of the preset load applied to the photovoltaic module 1 by the testing device 6 and the trampling frequency of an operator on the surface of the photovoltaic module 1 is large. Therefore, t is more than 0 and less than or equal to 5s, and the accuracy and the reliability of the test result of the photovoltaic module 1 are improved.
In particular, the test piece 61 comprises an abutment surface (not shown) for applying a preset load to the photovoltaic module 1, in an embodiment, the abutment surface has a contour shape similar to the contour shape of the sole to increase the accuracy and reliability of the test result, in particular, the abutment surface has a contour shape similar to the contour shape of the sole of the forefoot, heel portion; in another embodiment, the contour of the abutting surface is circular, rectangular or other shape to reduce the processing cost of the test piece 6161.
Wherein, the first test piece 611 includes a first abutting surface (not labeled in the figure) for applying a preset load to the photovoltaic module 1, and an area S1 of the first abutting surface satisfies: 50cm 2 ≤S1≤200cm 2 (ii) a The second test piece 612 includes a second abutting surface (not shown) for applying a preset load to the photovoltaic module 1, and an area S2 of the second abutting surface satisfies: 50cm 2 ≤S2≤200cm 2 。
In the present embodiment, if the area of the first contact surface and the area of the second contact surface are small, S1 < 50cm 2 ，S2＜50cm 2 Through the firstWhen the abutting surfaces and the second abutting surface apply preset loads to the photovoltaic module 1, the pressure applied to the photovoltaic module 1 is large, the difference between the pressure and the pressure applied to the photovoltaic module 1 by an operator in the actual installation process is large, and the reliability of a test result is reduced; if the area of the first contact surface and the area of the second contact surface are large, S1 is greater than 200cm 2 ，S2＞200cm 2 When a preset load is applied to the photovoltaic assembly 1 through the first abutting surface and the second abutting surface, the pressure intensity of the photovoltaic assembly 1 is small, the pressure intensity difference between the pressure intensity of an operator and the pressure intensity of the photovoltaic assembly 1 in the actual installation process is large, and the reliability of a test result is reduced. Therefore, 50cm 2 ≤S1≤200cm 2 ，50cm 2 ≤S2≤200cm 2 The accuracy and the reliability of the test result of the photovoltaic module 1 are improved.
In addition, when the first test piece 611 abuts against the photovoltaic module 1, the first test piece 611 is in the first position; when the second test piece 612 abuts against the photovoltaic module 1, the second test piece 612 is located at a second position, the first position and the second position are alternately distributed at intervals along the movement direction of the test piece 61 in the horizontal plane, and taking the movement of the test piece 61 in the horizontal plane along the second direction Y as an example, along the second direction Y, the distance L1 between the first position and the adjacent second position satisfies: l1 is more than or equal to 400mm and less than or equal to 800mm, so that the first position and the second position are matched with the treading positions of the left foot and the right foot of an operator on the photovoltaic module 1, and the accuracy and the reliability of the test result of the photovoltaic module 1 are improved.
Along a first direction X, a distance L2 between the geometric center of the first abutting surface and the geometric center of the second abutting surface satisfies: l2 is more than or equal to 100mm and less than or equal to 500mm, so that the distance between the first test piece 611 and the second test piece 612 is matched with the distance between the two feet of an operator, and the accuracy and the reliability of the test result of the photovoltaic module 1 are improved.
As shown in fig. 7, the step of applying the preset load to the photovoltaic module 1 by the testing device 6 at the preset frequency comprises:
selecting a first test point 11 on the first test surface, the second test surface or the third test surface;
during the movement of the test piece 61, the test piece 61 applies a predetermined load to the first test point 11.
In one embodiment, the testing device 6 only applies a predetermined load to one test point on the treadable surface during one test cycle of the testing device 6.
In another embodiment, the testing device 6 applies a predetermined load to at least two test points on the treadable surface during one test cycle of the testing device 6. Specifically, after the step of applying the preset load to the first test point 11 by the test piece 61, the step of applying the preset load to the photovoltaic module 1 by the test device 6 at the preset frequency includes:
selecting a second test point 12 on the first test surface, the second test surface or the third test surface, wherein the second test point 12 and the first test point 11 are distributed along a first direction X and/or a third direction Y;
during the movement of the test piece 61, the test piece 61 applies a predetermined load to the second test point 12.
Specifically, in one embodiment, in the first test surface, the second test surface, and the third test surface, the first test point 11 and the second test point 12 are located on the same test surface, that is, in one test cycle of the test apparatus 6, the test apparatus 6 applies a preset load to the first test surface, the second test surface, or the third test surface twice in sequence, so as to improve reliability of a test result of the anti-treading performance at the first test surface, the second test surface, and the third test surface of the photovoltaic module 1.
In another embodiment, the first test point 11 and the second test point 12 are located on different test surfaces among the first test surface, the second test surface and the third test surface, that is, the test device 6 applies a preset load to two of the first test surface, the second test surface and the third test surface in sequence during one test cycle of the test device 6. Taking the first test surface and the second test surface as an example, the first test point 11 is located on the first test surface, the second test point 12 is located on the second test surface, and the test device 6 sequentially applies preset loads to the first test point 11 and the second test point 12, so as to test the stepping-resistant working performance of different positions on the photovoltaic module 1.
In addition, in testing arrangement 6's a test cycle, testing arrangement 6 applys a plurality of times preset load to trampling the surface, and this application embodiment does not do special limitation to the specific quantity of test point, the distribution position of test point.
In this embodiment, the photovoltaic module 1 further includes a fourth test surface located outside the first test surface, the second test surface, and the third test surface, that is, the first test surface, the second test surface, the third test surface, and the fourth test surface constitute a treadable surface of the photovoltaic module 1, the first test surface is provided with at least one first test point 11, the second test surface is provided with at least one second test point 12, the third test surface is provided with at least one third test point 15, and the fourth test surface is provided with at least one fourth test point (not marked in the figure).
The step of applying a preset load to the photovoltaic module 1 by the testing device 6 at a preset frequency comprises:
selecting a first test point 11 on a first test surface, selecting a second test point 12 on a second test surface, selecting a third test point 15 on a third test surface, and selecting a fourth test point on a fourth test surface;
the driving assembly drives the test piece 61 to move along the first direction X and/or the third direction Y, and simultaneously, drives the test piece 61 to move along the second direction Z at a preset frequency;
during the movement of the test piece 61, the test piece 61 applies a predetermined load to the first test point 11, the second test point 12, the third test point 15, and the fourth test point.
In this embodiment, preset loads are applied to the first test surface, the second test surface, the third test surface, and the fourth test surface by the test device 6, so that the treading resistance of the entire surface of the photovoltaic module 1 can be tested.
In one embodiment, the testing device 6 can perform a stepping test on the photovoltaic module 1 to shorten the testing period of the photovoltaic module 1.
In another embodiment, the testing device 6 performs a multi-step test on the photovoltaic module 1 to improve the accuracy and reliability of the test result.
When the testing device 6 tramples the photovoltaic module 1 for the second time, the step that the testing device 6 applies the preset load to the photovoltaic module 1 with the preset frequency comprises:
selecting a fifth test point on the first test surface, selecting a sixth test point on the second test surface, selecting a seventh test point on the third test surface, and selecting an eighth test point on the fourth test surface;
the driving component drives the test piece 61 to move along the first direction X and/or the third direction Y, and simultaneously drives the test piece 61 to move along the second direction Z at a preset frequency;
in the movement process of the test piece 61, the test piece 61 applies a preset load to the fifth test point, the sixth test point, the seventh test point, and the eighth test point.
The first test point 11 and the fourth test point are distributed along a first direction X and/or a third direction Y, and/or the second test point 12 and the fifth test point are distributed along the first direction X and/or the third direction Y, and/or the third test point 15 and the sixth test point are distributed along the first direction X and/or the third direction Y, and/or the fourth test point and the eighth test point are distributed along the first direction X and/or the third direction Y, so as to improve the accuracy and reliability of the test result.
Specifically, the defect detection of the photovoltaic module 1 includes appearance inspection so as to judge the degree of damage of the appearance of the photovoltaic module 1 after the load, thereby increasing the reliability of the judgment structure of the stepping resistance of the photovoltaic module 1.
As shown in fig. 6 and 7, the step of performing the defect inspection test on the photovoltaic module 1 and recording the test result as the initial result includes:
carrying out appearance inspection on the photovoltaic module 1, and recording a test result as an initial appearance result;
the steps of performing a defect inspection test on the loaded photovoltaic module 1 and recording a test result as a load result include: carrying out appearance inspection on the photovoltaic module 1, and recording a test result as an appearance load result;
the steps of comparing and analyzing the initial result and the load result and judging the change degree of the structure, the function and the like of the photovoltaic module 1 after the load comprises the following steps: and comparing and analyzing the initial appearance result and the appearance load result, and judging the change degree of the appearance of the photovoltaic module 1 after the load according to the appearance change.
Wherein, the appearance inspection comprises external defect inspection and/or internal defect test to improve the accuracy of the test result.
As shown in fig. 6 and 7, the step of performing the defect inspection test on the photovoltaic module 1 and recording the test result as the initial result includes:
carrying out external defect inspection on the photovoltaic module 1, and recording a test result as an external initial result;
the photovoltaic module 1 is subjected to an internal defect test and the test result is recorded as an internal initial result.
The step of performing external defect inspection on the photovoltaic module 1 and recording the test result as an external initial result comprises:
checking the number, position and size of defects such as pits, cracks, breakage and the like on the outer surface of the photovoltaic module 1, and recording the defects as an external initial result;
the step of performing an internal defect test on the photovoltaic module 1 and recording the test result as an internal initial result comprises:
the photovoltaic module 1 was tested for internal defects using an electroluminescence tester (EL tester), and the number, position, and size of defects such as internal cracks, chips, and the like were recorded as internal initial results.
As shown in fig. 6 and 7, the step of performing a defect inspection test on the loaded photovoltaic module 1 and recording a test result as a load result includes:
carrying out external defect inspection on the photovoltaic module 1, and recording a test result as an external load result;
the photovoltaic module 1 is subjected to an internal defect test and the test result is recorded as an internal load result.
Wherein the external defect inspection is MQT 01 visual inspection and the internal defect test is EL test.
The step of performing an external defect inspection on the photovoltaic module 1 and recording the test result as an external load result includes:
inspecting the number, position and size of defects such as pits, cracks, broken grids and the like on the outer surface of the photovoltaic module 1, and recording the defects as an external load result;
the step of performing an internal defect test on the photovoltaic module 1 and recording the test result as an internal load result comprises:
the photovoltaic module 1 was tested for internal defects using an electroluminescence tester (EL tester), and the number, position, and size of defects such as internal cracks and chips were recorded as an internal load result.
As shown in fig. 6 and 7, the step of comparing and analyzing the initial result and the load result, and determining the degree of change in the structure, function, and the like of the photovoltaic module 1 after load includes:
comparing and analyzing an external initial result and an external load result, and judging the change degree of the external defects after the photovoltaic module 1 is loaded according to the change of the number and the size of the external surface defects;
comparing and analyzing the internal initial result and the internal load result, and judging the change degree of the internal defects after the photovoltaic module 1 is loaded according to the change of the number and the size of the internal defects;
and judging whether the trampling resistance of the photovoltaic module 1 meets the production requirement according to the change degree of the external defects and the internal defects after the photovoltaic module 1 is loaded.
In the embodiment, in the process of performing the trampling test on the photovoltaic assembly 1 by the test device 6, if the outer surface of the photovoltaic assembly 1 has obvious problems such as cracks, broken gates and the like, or the change degree of the external structure after the photovoltaic assembly 1 is loaded is large, the trampling resistance of the photovoltaic assembly 1 is unqualified, the test is directly stopped, and the trampling test is performed again after parameters such as the structure, the process and the material of the photovoltaic assembly 1 are adjusted; if the variation degree of the external defect after the photovoltaic module 1 is loaded is small, the trample resistance of the photovoltaic module 1 meets the requirement, and the photovoltaic module 1 can be put into production and use.
In addition, the defect inspection test of the photovoltaic module 1 further includes a performance test, and the step of performing the defect inspection test on the photovoltaic module 1 and recording the test result as an initial result includes:
testing the performance of the photovoltaic module 1, and recording the test result as an initial performance test result;
the steps of performing a defect inspection test on the loaded photovoltaic module 1 and recording a test result as a load result include:
testing the performance of the loaded photovoltaic module 1, and recording the test result as a load performance test result;
the steps of comparing and analyzing the initial result and the load result and judging the change degree of the structure, the function and the like of the photovoltaic module 1 after the load comprises the following steps:
and comparing and analyzing the initial performance test result and the load performance test result, and judging whether the trampling resistance of the photovoltaic module 1 meets the production requirement according to the change degree of the performance.
Wherein, the performance test includes but not limited to MQT 19.1 initial steady state test, power test, MQT 03 insulation test under the MQT 06.1STC condition, MQT 15 wet leakage test etc. this application does not do the special restriction to the concrete kind, the quantity of performance test.
In addition, the defect inspection test of the photovoltaic module 1 further includes an environmental aging test, wherein the environmental aging test includes, but is not limited to, an MQT 11 thermal cycle test, an MQT 12 humidity freeze test, and an MQT 13 humidity thermal cycle test, and the embodiment of the present application does not specially limit the specific content and the number of the environmental aging test.
The step of performing a defect inspection test on the photovoltaic module 1 and recording the test result as an initial result includes:
carrying out environmental aging on the photovoltaic module 1, and recording a test result as a result before aging;
the steps of performing a defect inspection test on the loaded photovoltaic module 1 and recording a test result as a load result include:
carrying out environmental aging on the loaded photovoltaic module 1, and recording a test result as an aged result;
the steps of comparing and analyzing the initial result and the load result and judging the change degree of the structure, the function and the like of the photovoltaic module 1 after the load comprises the following steps:
and comparing and analyzing the result before aging and the result after aging, and judging whether the environmental aging degree of the photovoltaic module 1 meets the production requirement.
In addition, after the step of applying a preset load to the photovoltaic module by using the testing device and maintaining the preset load for a preset time, the method for testing the photovoltaic module may further include:
the IEC 61215-2MQT20 test is carried out on the photovoltaic module 1, namely after the photovoltaic module 1 is installed on the color steel tile assembly, the photovoltaic module 1 is pulled up and pressed down by using the device in the second direction Z, the pulling up and pressing down operation is a test cycle once, and the device is used for carrying out the test cycle of about one thousand times on the photovoltaic module 1 so as to test the structural stability of the photovoltaic module 1 after load.
When the testing device 6 tramples the photovoltaic module 1 for many times, take twice as an example, trample after the test is accomplished to the second time and need carry out visual inspection, working property test, environmental aging test to the photovoltaic module 1, trample after the test is accomplished for the first time, can carry out visual inspection, working property test, environmental aging test to the photovoltaic module 1, also can not carry out visual inspection, working property test, environmental aging test to shorten test cycle.
In any of the above embodiments, the predetermined load F satisfies: f is more than or equal to 50KG and less than or equal to 160KG, and specifically, the preset load can be 50KG, 96KG, 102KG, 160KG and the like.
When an operator stands on the surface of the photovoltaic module 1 for installation, the situation that the operator carries an installation tool, carries the photovoltaic module 1 and the like exists, if the preset load is small, namely F is less than 50KG, the reliability of the test result is poor; if the predetermined load is larger, i.e. F is greater than 160KG, the test cost of the photovoltaic module 11 is increased, and the production cost of the photovoltaic module 1 is increased. Therefore, in the embodiment, F is greater than or equal to 50KG and less than or equal to 160KG, the reliability of the test result of the photovoltaic module 1 can be improved, and the test cost of the photovoltaic module 1 is reduced.
Further, the movement distance L3 of the test piece 61 in the second direction Z satisfies: l3 is more than 0 and less than or equal to 60mm, so that the movement distance of the test piece 61 in the second direction Z is matched with the lifting height of the feet of an operator when the operator treads on the surface of the photovoltaic module 1, and the accuracy and the reliability of a test result are improved.
In summary, as shown in fig. 5, fig. 6 and fig. 7, the method for testing a photovoltaic module provided in the embodiment of the present application includes:
taking a photovoltaic module 1;
carrying out external defect inspection on the photovoltaic module 1, and recording a test result as an external initial result;
carrying out internal defect test on the photovoltaic assembly 1, and recording a test result as an internal initial result;
carrying out performance test on the photovoltaic module 1, and recording a test result as an initial performance test result;
carrying out environmental aging test on the photovoltaic module 1, and recording a test result as a result before aging;
placing the photovoltaic module 1 on the base 62 of the testing device 6;
the second driving member drives the first testing member 611 and the second testing member 612 to synchronously move along the first direction X, and/or the third driving member drives the first testing member 611 and the second testing member 612 to synchronously move along the third direction Y, and at the same time, the first driving member 64 drives the first driving member 64 and the second driving member to alternately move along the second direction Z at a preset frequency, so that the first driving member 64 and the second driving member sequentially apply a preset load to the surface of the photovoltaic module 1, wherein the driving members sequentially apply the preset load to the first testing point 11, the second testing point 12, the third testing point 15 and the fourth testing point;
the second driving element drives the first testing element 611 and the second testing element 612 to synchronously move along the first direction X, and/or the third driving element drives the first testing element 611 and the second testing element 612 to synchronously move along the third direction Y, and at the same time, the first driving element 64 drives the first driving element 64 and the second driving element to alternately move along the second direction Z at a preset frequency, so that the first driving element 64 and the second driving element sequentially apply a preset load to the surface of the photovoltaic module 1, wherein the driving element sequentially applies a preset load to the fifth testing point, the sixth testing point, the seventh testing point and the eighth testing point;
carrying out internal defect test on the loaded photovoltaic module 1, and recording a test result as an internal load result;
carrying out external defect inspection on the loaded photovoltaic module 1, and recording a test result as an external load result;
carrying out performance test on the loaded photovoltaic module 1, and recording a test result as a load performance test result;
carrying out IEC 61215-2MQT20 test on the loaded photovoltaic module 1;
carrying out environmental aging test on the loaded photovoltaic module 1, and recording a test result as an aged result;
comparing and analyzing the external initial result and the external load result, and judging the external defect change degree of the photovoltaic module 1 after being loaded;
comparing and analyzing the internal initial result and the internal load result, and judging the internal defect change degree of the photovoltaic module 1 after being loaded;
comparing and analyzing the initial performance test result and the load performance test result, and judging the performance change degree of the photovoltaic module 1 after loading;
comparing and analyzing the result before aging and the result after aging, and judging the environmental aging degree of the photovoltaic module 1;
and judging the trampling resistance of the photovoltaic module 1 according to the external structure change degree, the internal structure change degree, the performance change degree and the environmental aging degree of the photovoltaic module 1 after being loaded.
The sequence and the times of the internal defect test, the external defect inspection, the performance test, the IEC 61215-2MQT20 test and the environmental aging test are not specially limited.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (13)
1. A photovoltaic module testing method for testing the anti-treading performance of the photovoltaic module (1), characterized in that the photovoltaic module testing method comprises:
carrying out a defect inspection test on the photovoltaic module (1), and recording as an initial result;
installing the photovoltaic module (1) on a color steel tile module;
applying a preset load to the photovoltaic module (1) at a preset frequency by using a testing device (6);
carrying out a defect inspection test on the loaded photovoltaic module (1), and recording the defect inspection test as a load result;
and comparing and analyzing the initial result and the load result.
2. The photovoltaic module testing method according to claim 1, wherein the photovoltaic module (1) comprises a connecting part (13) and a hanging part (14), the connecting part (13) is used for contacting with the color steel tile assembly, and the hanging part (14) is used for enclosing a cavity (3) with the color steel tile (2);
a first test surface, a second test surface and a third test surface are arranged on the photovoltaic component (1), the first test surface is positioned at the edge of the connecting part (13), the second test surface is positioned at the suspended part (14), and the third test surface is positioned at the corner of the photovoltaic component (1);
the testing device (6) comprises a driving assembly and a testing piece (61), wherein the driving assembly can drive the testing piece (61) to move along the length direction, the width direction and the thickness direction of the photovoltaic module (1);
the step of applying a preset load to the photovoltaic module (1) at a preset frequency by means of a testing device (6) comprises:
the driving assembly drives the test piece (61) to move along the length direction and/or the width direction of the photovoltaic assembly (1), and simultaneously, the driving assembly drives the test piece (61) to move along the thickness direction of the photovoltaic assembly (1) at the preset frequency;
the test piece (61) applies the preset load to at least one of the first test surface, the second test surface, the third test surface.
3. The photovoltaic module testing method according to claim 2, wherein the step of applying a predetermined load to the photovoltaic module (1) at a predetermined frequency using a testing device (6) comprises:
during the movement of the test piece (61), the test piece (61) applies the preset load to the first test surface, the second test surface and the third test surface.
4. A photovoltaic module testing method according to claim 2 or 3, characterized in that the photovoltaic module (1) is further provided with a fourth testing surface, the surfaces outside the first, second and third testing surfaces being the fourth testing surface;
the step of applying a preset load to the photovoltaic module (1) at a preset frequency by means of a testing device (6) comprises:
during the movement of the test piece (61), the test piece (61) applies the preset load to the fourth test surface.
5. The photovoltaic module testing method according to claim 2, wherein the test piece (61) includes a first test piece (611) and a second test piece (612) distributed along a width direction of the photovoltaic module (1), the first test piece (611) and the second test piece (612) being connected to the driving module, respectively;
the step of driving the test piece (61) to move along the thickness direction of the photovoltaic module (1) at the preset frequency by the driving component comprises the following steps:
the driving component drives the first test piece (611) and the second test piece (612) to move alternately along the thickness direction of the photovoltaic component (1).
6. The photovoltaic module testing method according to claim 5, wherein the time t from the contact of the first test piece (611) with the photovoltaic module (1) to the contact of the second test piece (612) with the photovoltaic module (1) satisfies: 0s to t is less than or equal to 5s;
the preset frequency is less than or equal to 5 seconds/time.
7. The photovoltaic module testing method of claim 1, wherein the defect inspection test comprises an appearance inspection;
the step of performing a defect inspection test on the photovoltaic module (1) and recording as an initial result comprises:
inspecting the appearance of the photovoltaic module (1), and recording the number and the size of appearance defects of the photovoltaic module (1) as an appearance initial result;
the method comprises the following steps of carrying out defect inspection test on the loaded photovoltaic module (1) and recording the defect inspection test as a load result:
inspecting the appearance of the photovoltaic module (1) after loading, and recording the number and the size of appearance defects of the photovoltaic module (1) after loading as an appearance loading result;
the step of comparing and analyzing the initial result and the load result comprises:
and comparing and analyzing the appearance initial result and the appearance load result, and judging the change degree of the appearance of the photovoltaic module (1) after loading.
8. The photovoltaic module testing method according to claim 7, wherein the appearance test comprises an external defect inspection and/or an internal defect test.
9. The photovoltaic module testing method of claim 1, wherein the defect inspection test comprises a performance test;
the step of performing a defect inspection test on the photovoltaic module (1) and recording as an initial result comprises:
testing the performance of the photovoltaic module (1), and recording the performance as an initial performance test result;
the method comprises the following steps of carrying out a defect inspection test on the loaded photovoltaic module (1) and recording the defect inspection test as a load result:
testing the performance of the loaded photovoltaic module (1), and recording the performance as a load performance test result;
and comparing and analyzing the initial performance test result and the load performance test result, and judging the change degree of the performance of the photovoltaic module (1) after loading.
10. The photovoltaic module testing method according to claim 1, wherein the defect inspection test includes an environmental burn-in test;
the step of performing a defect inspection test on the photovoltaic module (1) and recording as an initial result comprises:
carrying out environmental aging test on the photovoltaic module (1), and recording the result as a result before aging;
the method comprises the following steps of carrying out a defect inspection test on the loaded photovoltaic module (1) and recording the defect inspection test as a load result:
carrying out environmental aging test on the loaded photovoltaic module (1), and recording the environmental aging test result as an aged result;
the step of comparing and analyzing the initial result and the load result comprises:
and comparing and analyzing the result before aging and the result after aging, and judging the environmental aging degree of the photovoltaic module (1) after loading.
11. The photovoltaic module testing method according to claim 1, wherein after the step of applying a preset load to the photovoltaic module (1) by using the testing device (6) for a preset time, the photovoltaic module testing method comprises:
and carrying out IEC 61215-2MQT20 test on the photovoltaic module (1).
12. The photovoltaic module testing method according to claim 2, wherein a moving distance L3 of the test piece (61) in a thickness direction of the photovoltaic module (1) satisfies: 0mm but less than or equal to L3 and less than or equal to 60mm.
13. The photovoltaic module testing method according to claim 1, wherein the preset load F satisfies: f is more than or equal to 50KG and less than or equal to 160KG.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211600289.1A CN115987215A (en) | 2022-12-12 | 2022-12-12 | Photovoltaic module testing method |
| US18/090,690 US20240192103A1 (en) | 2022-12-12 | 2022-12-29 | Testing device and method for testing photovoltaic module |
| EP23153029.6A EP4387087A1 (en) | 2022-12-12 | 2023-01-24 | Test device and method for testing photovoltaic module |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024124881A1 (en) * | 2022-12-12 | 2024-06-20 | 晶科能源(海宁)有限公司 | Test method for photovoltaic assembly, and test method for photovoltaic profiled steel sheet component |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024124881A1 (en) * | 2022-12-12 | 2024-06-20 | 晶科能源(海宁)有限公司 | Test method for photovoltaic assembly, and test method for photovoltaic profiled steel sheet component |
| WO2024124880A1 (en) * | 2022-12-12 | 2024-06-20 | 晶科能源(海宁)有限公司 | Photovoltaic module testing method and photovoltaic profiled steel plate component testing method |
| WO2024124884A1 (en) * | 2022-12-12 | 2024-06-20 | 晶科能源(海宁)有限公司 | Photovoltaic module test method and photovoltaic profiled steel sheet component test method |
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