Photovoltaic module load testing device and method thereof

Abstract

The invention discloses a photovoltaic module load testing device and method, and the device comprises a rack, a cover, a base, a step part disposed on the rack, and two groups of load testing assemblies which are disposed in the rack and are used for detecting the load bearing performance of a photovoltaic panel. Wherein the two groups of load test assemblies are arranged above and below the step part and are symmetrically distributed; each group of load test assembly comprises a transmission assembly and two housings arranged on the transmission assembly, and the two housings can perform range pressurization on the surface of the photovoltaic panel; and a point pressure detection assembly and an external cause generation module. And the image acquisition head is arranged in the rack. According to the invention, the established test environments are arranged in the two housings, so that the test environments are separated from the image acquisition environment while the range load test, the local load test and the load resistance test under the high-temperature and cold conditions of the photovoltaic panel are realized, the acquisition definition is ensured, and the service life of the image acquisition head is prolonged at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of photovoltaic component load, and in particular to a photovoltaic component load testing device and method. Background Art

[0002] Photovoltaic modules are often affected by wind, snow, high temperature, cold and other environmental factors in actual operation. In order to ensure the stable operation of photovoltaic modules, it is necessary to perform some corresponding load tests on photovoltaic modules. However, the existing photovoltaic module load test devices have the following disadvantages in actual use:

[0003] 1. The test method is single and the operation process is complicated. It is necessary to manually carry sandbags and other heavy objects to press on the surface of the photovoltaic module for load-bearing test;

[0004] 2. The camera structure and the photovoltaic module exist in the same environment. High temperature or cold weather can easily affect the operation of the camera structure. Therefore, a photovoltaic module load testing device and method are proposed. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention is proposed.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic component load testing device, comprising a frame, a cover, and a base: a step portion arranged on the frame for supporting a photovoltaic panel; and two groups of load testing components arranged inside the frame for detecting the load-bearing performance of the photovoltaic panel, wherein the two groups of load testing components are placed above and below the step portion and are symmetrically distributed, and are used for load testing on both sides of the photovoltaic panel; each group of load testing components includes a transmission component, two cover shells arranged on the transmission component, and the two cover shells can perform a range of pressurization on the surface of the photovoltaic panel; and a point pressure detection component and an external cause generation module, wherein the detection end of the point pressure detection component is placed inside the cover shell for load-bearing testing of a local area of ​​the photovoltaic panel surface, and the external cause generation module acts on the inside of the two cover shells and is used to test the deformation degree of the photovoltaic panel under high temperature or cold conditions; and also includes an image acquisition head arranged inside the frame, which is used for image acquisition after the photovoltaic panel test.

[0007] As a preferred solution of the photovoltaic module load testing device described in the present invention, wherein: the transmission assembly placed in the upper position includes two hydraulic cylinders fixed on the top of the frame, and mounting bars fixed on the telescopic ends of the two hydraulic cylinders; it also includes an electric telescopic rod and an engaging transmission assembly arranged in the middle and on both sides of the mounting bar; wherein, the U-shaped frame fixed at the telescopic end of the mounting bar has two groups of ring sleeves distributed inside and outside at its opposite ends through two columns, each group of ring sleeves includes two ring sleeves, and two cover shells are respectively connected to the two groups of ring sleeves, and when the electric telescopic rod is extended or shortened, the engaging transmission assembly can drive the two cover shells to deflect downward or upward and form a semicircular structure.

[0008] As a preferred solution of the photovoltaic component load testing device described in the present invention, the meshing transmission assembly includes mounting frames respectively fixed at both ends of the mounting bar, each mounting frame is provided with a rack; and teeth fixed on the outer wall of each cover shell, and the teeth are meshed with the corresponding rack.

[0009] As a preferred solution of the photovoltaic module load testing device of the present invention, a rubber strip is provided at the bottom edge of each cover shell.

[0010] As a preferred solution of the photovoltaic module load testing device described in the present invention, wherein: the point pressure detection component includes a gas generator arranged on the top of the rack, a plurality of air pipes arranged at the output end of the gas generator, which pass through a plurality of through holes opened on the top of the rack and extend to the inside of the rack; and a plurality of air bags arranged on the inner walls of the two cover shells, the plurality of air bags are connected one by one with the ends of the plurality of air pipes away from the gas generator; and also includes a plurality of pneumatic pressure rods arranged on the inner side of each air bag, which are used for load testing of local areas of photovoltaic panels.

[0011] As a preferred solution of the photovoltaic module load testing device of the present invention, the operating end of each pneumatic pressure rod is provided with a rubber sleeve.

[0012] As a preferred solution of the photovoltaic module load testing device of the present invention, the air pipes are arranged in four groups in a circular array.

[0013] As a preferred solution of the photovoltaic module load testing device described in the present invention, the external cause generating module includes two cooling and heating units, which are arranged on both sides of the top of the rack, and pipe bodies are respectively arranged at the output ends of each cooling and heating unit, and one end of each of the pipe bodies away from the cooling and heating unit passes through the through groove opened on the side wall of the corresponding column and is connected to the interior of the cover.

[0014] As a preferred solution of the photovoltaic module load testing device of the present invention, the machine cover includes a plate body, an opening slot provided on the upper part of the plate body, and a door body detachably arranged on one side of the opening slot for opening and closing the opening slot.

[0015] In order to solve the above technical problems, the present invention provides the following technical solutions: a photovoltaic module load testing method, comprising:

[0016] First, the photovoltaic panel is placed on the step, the transmission assembly is operated, and the two covers form a semicircular structure and move downward to apply pressure on the surface of the photovoltaic panel to perform a range load resistance test on the photovoltaic panel;

[0017] After the range load resistance test is completed, when the two covers form a semicircle and contact the photovoltaic panel to increase pressure or fit without pressure, the gas generator runs, and the pneumatic pressure rod performs a local load test on the photovoltaic panel through the expansion or retraction of the airbag;

[0018] When the photovoltaic panels are subjected to range and local load tests, the modules are generated by external factors to create high temperature or cold conditions, thus achieving load testing of the photovoltaic panels in harsh environments.

[0019] The beneficial effects of the present invention are as follows: the load testing components symmetrically arranged up and down can be used for load testing on both sides of the photovoltaic panel, so as to realize the load resistance of the photovoltaic panel under harsh environments such as snow pressure, high temperature, and cold. Specifically, the deformation of the photovoltaic panel is used as the load resistance standard. In the present application, the two covers on the transmission assembly, the point pressure detection assembly, and the external cause generation module can respectively realize the range load test, local load test and load resistance test under harsh environment on the surface of the photovoltaic panel. At the same time, the image acquisition head installed in the frame can capture pictures of the tested photovoltaic panel. In the present application, environmental changes, i.e. high temperature, cold, and load-bearing tests are all completed inside the two covers, and the image acquisition head is placed inside the frame, which can reduce the impact of harsh conditions on the image acquisition head and increase the service life of the image acquisition head. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. Among them:

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram of the partial disassembly structure;

[0023] Figure 3 for Figure 2 A schematic diagram of the front view structure of

[0024] Figure 4 for Figure 1 A schematic cross-sectional structure diagram of ;

[0025] Figure 5 for Figure 4 A schematic diagram of the front view structure of

[0026] Figure 6 It is a schematic diagram of the enlarged structure of the load test assembly;

[0027] Figure 7This is a schematic diagram of the partially enlarged structure of the point pressure detection component.

[0028] In the figure: 1. frame; 2. cover; 3. base; 4. step part; 5. transmission assembly; 501. hydraulic cylinder; 502. mounting bar; 503. electric telescopic rod; 504. U-shaped frame; 505. column; 506. ring sleeve; 507. cover shell; 508. rubber strip; 509. mounting frame; 510. rack; 511. teeth; 6. external cause generation module; 601. tube body; 602. through groove; 603. cooling and heating unit; 7. point pressure detection assembly; 701. air pipe; 702. air bag; 703. pneumatic pressure rod; 704. gas generator; 8. image acquisition head; 10. photovoltaic panel. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0031] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0032] Example 1, reference Figures 1 to 6, which is the first embodiment of the present invention, provides a photovoltaic module load testing device and method thereof, which can realize load testing and point pressure testing on both sides of the photovoltaic panel, and comprises a frame 1, a cover 2, and a base 3: a step portion 4 arranged on the frame 1 for supporting the photovoltaic panel 10; and two groups of load testing components arranged inside the frame 1 for detecting the load-bearing performance of the photovoltaic panel 10, wherein the two groups of load testing components are placed above and below the step portion 4 and are symmetrically distributed, and are used for load testing on both sides of the photovoltaic panel 10; each group of load testing components comprises a transmission component 5 , two covers 507 are arranged on the transmission component 5, and the two covers 507 can perform range pressurization on the surface of the photovoltaic panel 10; and a point pressure detection component 7 and an external cause generation module 6, wherein the detection end of the point pressure detection component 7 is placed inside the cover 507 for load-bearing test of a local area on the surface of the photovoltaic panel 10, and the external cause generation module 6 acts on the inside of the two covers 507 and is used to test the deformation degree of the photovoltaic panel 10 under high temperature or cold conditions; it also includes an image acquisition head 8 arranged inside the frame 1, which is used for image acquisition of the photovoltaic panel 10 after the test.

[0033] Combination Figure 4 , 6 It can be seen that the step portion 4 is arranged in the middle of the frame 1 and is used for placing and supporting the photovoltaic panel 10, and the load testing components symmetrically arranged above and below can be used for load testing on both sides of the photovoltaic panel 10, so as to realize the load resistance of the photovoltaic panel 10 in harsh environments such as snow pressure, high temperature, and cold. Specifically, the deformation of the photovoltaic panel 10 is used as the load resistance standard. In this application, the two covers 507, the point pressure detection component 7, and the external cause generation module 6 on the transmission component 5 can respectively realize the range load test, local load test and load resistance test in harsh environment on the surface of the photovoltaic panel 10. At the same time, the image acquisition head 8 provided in the frame 1 can capture pictures of the tested photovoltaic panel 10. In this application, environmental changes, i.e. high temperature, cold, and load-bearing tests are all completed inside the two covers 507, and the image acquisition head 8 is placed inside the frame 1, which can reduce the impact of harsh conditions on the image acquisition head 8 and improve the service life of the image acquisition head 8.

[0034] The test environment created by the present application is placed inside two covers 507, so as to realize the range load test, local load test and load resistance test under high temperature and cold conditions of the photovoltaic panel 10, while separating the test environment from the image acquisition environment, which not only ensures the clarity of the acquisition, but also improves the service life of the image acquisition head 8.

[0035] Furthermore, the transmission assembly 5 placed in the upper position includes two hydraulic cylinders 501 fixed to the top of the frame 1, and mounting bars 502 fixed to the telescopic ends of the two hydraulic cylinders 501; it also includes electric telescopic rods 503 arranged in the middle and on both sides of the mounting bars 502 and the meshing transmission assembly 5; wherein, the U-shaped frame 504 fixed to the telescopic end of the mounting bar 502 has two groups of inner and outer distributed rings 506 arranged at its opposite ends through two columns 505, and each group of rings 506 includes two rings 506. 06, the two covers 507 are respectively connected to the two sets of ring sleeves 506. When the electric telescopic rod 503 is extended or shortened, the meshing transmission assembly 5 can drive the two covers 507 to deflect downward or upward and form a semicircular structure; further, the meshing transmission assembly 5 includes mounting frames 509 respectively fixed at both ends of the mounting bar 502, each mounting frame 509 is provided with a rack 510; and teeth 511 fixed on the outer wall of each cover 507, and the teeth 511 are meshed with the corresponding rack 510.

[0036] This application is explained using the above load test assembly as an example;

[0037] Combination Figure 6 As shown, the mounting bar 502 is fixed to the output end of the hydraulic cylinder 501, and the electric telescopic rod 503 arranged in the middle is connected to two columns 505 through a U-shaped frame 504 at the telescopic end, wherein two groups of ring sleeves 506 distributed inside and outside are arranged between the two columns 505, and the two groups of ring sleeves 506 are respectively connected to two housings 507, while the racks 510 connected to the two ends of the mounting bar 502 through the mounting frames 509 are meshed with the teeth 511 arranged on the outer walls of the two housings 507;

[0038] The bottom edge of each cover 507 is provided with a rubber strip 508, combined with Figure 6 When the device performs the first range load test, the two rubber strips 508 can protect the bottom of the two cover shells 507, while improving the contact stability between the rubber strips 508 and the cover shells 507 to prevent slipping.

[0039] Specific:

[0040] The first type of range load test;

[0041] First, the electric telescopic rod 503 is driven to move upward, which drives the U-shaped frame 504, the column 505 on the hydraulic cylinder 501, the ring sleeve 506 and the cover 507 to move upward, while the rack 510 remains stationary to achieve the upper and rearward docking of the two covers 507, that is, Figure 6 As shown in the state, the two cover shells 507 after docking form a semicircle with the opening downward, and then the hydraulic cylinder 501 operates, and the two cover shells 507 in the semicircular state move downward and contact the surface of the photovoltaic panel 10 and gradually load, completing the range load test process of the photovoltaic panel 10;

[0042] Second range load test:

[0043] The two covers 507 mentioned above are in conflict with the surface of the photovoltaic panel 10. At this time, the hydraulic cylinder 501 is driven to move upward, so that the cover 507 is separated from the photovoltaic panel 10 and moves upward for a distance. Then the hydraulic cylinder 501 remains stationary, and the electric telescopic rod 503 moves downward, so that the two cover shells 507 are switched from a semicircular structure with the opening facing downward to a semicircular structure with the opening facing upward. When the hydraulic cylinder 501 is driven to move downward again, the test process of loading the surface of the photovoltaic panel 10 with the arc section is realized.

[0044] Example 2, reference Figures 1 to 7 , which is the second embodiment of the present invention. Different from the previous embodiment, this embodiment provides a point pressure detection component 7, which solves the problem of load testing in a local area. It includes a gas generator 704 arranged on the top of the rack 1, and a plurality of air pipes 701 arranged at the output end of the gas generator 704, which pass through a plurality of through holes opened on the top of the rack 1 and extend to the inside of the rack 1; and a plurality of air bags 702 arranged on the inner walls of the two cover shells 507, and the plurality of air bags 702 are connected one by one with one end of the plurality of air pipes 701 away from the gas generator 704; and also includes a plurality of pneumatic pressure rods 703 arranged on the inner side of each air bag 702, which are used for load testing in a local area of ​​the photovoltaic panel 10.

[0045] Specifically, the air pipe 701 and the air bag 702 correspond to each other one by one, the air inlet of the air bag 702 is connected to the gas generator 704 through the air pipe 701, and the air outlet is connected to a plurality of pneumatic pressure rods 703. Here, the pneumatic pressure rods 703 are existing mature technologies, and are composed of a movable sleeve, a movable rod arranged in the movable sleeve, and a pressure head at the end of the movable rod, and the pressure head is provided with a rubber sleeve;

[0046] When the two housings 507 are Figure 5 When the state is to perform or not perform a range load test on the surface of the photovoltaic panel 10, the gas generator 704 is running at this time, and through the expansion and retraction of a number of air bags 702, a number of pneumatic pressure rods 703 are used to perform point pressure on the surface of the photovoltaic panel 10. After a certain period of time, the two cover shells 507 are moved up through the transmission assembly 5, and the image acquisition head 8 collects the image data of the photovoltaic panel 10 after the point pressure, and the local load test of the photovoltaic panel 10 can be completed. This process can synchronously drive the external cause generation module 6 to achieve the point pressure load resistance test of the photovoltaic panel 10 under harsh environment.

[0047] Example 3, reference Figures 1 to 7, which is the third embodiment of the present invention. Different from the previous embodiment, this embodiment provides the deformation of the photovoltaic panel 10 at different temperatures, solves the problem of the load resistance of the photovoltaic panel 10 at different temperatures, and includes two cooling and heating units 603, the two cooling and heating units 603 are arranged on both sides of the top of the rack 1, and pipe bodies 601 are respectively arranged at the output ends of each cooling and heating unit 603, and one end of each pipe body 601 away from the cooling and heating unit 603 passes through the through groove 602 opened on the side wall of the corresponding column 505 and is connected to the inside of the cover 507.

[0048] Specifically, the cooling and heating unit 603 is connected to the through slot 602 through the pipe body 601, and the through slot 602 is opened inside the column 505 and communicates with the housing 507. Therefore, when the cooling and heating unit 603 is running, the temperature inside the housing 507 can be regulated. Figure 2 , 3 4. Two groups of external cause generating modules 6 are provided, wherein two external cause generating modules 6 create a high temperature or a cold environment, so that load testing on both sides of the photovoltaic panel 10 can be realized under high temperature or cold conditions, and the two external cause generating modules 6 respectively serve as high temperature or cold driving sources, thereby further improving the efficiency of the device switching environment.

[0049] Importantly, it should be noted that the construction and arrangement of the present application shown in a plurality of different exemplary embodiments are only exemplary. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, and parameter values ​​(e.g., temperature, pressure, etc.), installation arrangement, use of materials, color, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in the application. For example, the element shown as integrally formed can be composed of multiple parts or elements, the position of the element can be inverted or otherwise changed, and the nature or number or position of the discrete element can be changed or changed. Therefore, all such modifications are intended to be included in the scope of the present invention. The order or sequence of any process or method steps can be changed or reordered according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure of performing the function described herein, and is not only structurally equivalent but also equivalent structure. Without departing from the scope of the present invention, other replacements, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the invention is not limited to a specific embodiment, but extends to numerous modifications still falling within the scope of the appended claims.

[0050] Additionally, in order to provide a concise description of exemplary embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0051] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0052] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A photovoltaic module load testing device, characterized in that: It comprises a frame (1), a cover (2) and a base (3); A step portion (4) provided on the frame (1) and used for supporting a photovoltaic panel (10); Two groups of load test assemblies are arranged inside the frame (1) for testing the load-bearing performance of the photovoltaic panel (10), wherein the two groups of load test assemblies are placed above and below the step portion (4) and are symmetrically distributed, and are used for load testing on both sides of the photovoltaic panel (10), and each group of load test assemblies includes a transmission assembly (5) and two covers (507) arranged on the transmission assembly (5), and the two covers (507) can perform range-increasing pressure on the surface of the photovoltaic panel (10); It also includes a point pressure detection component (7) and an external cause generation module (6), wherein the detection end of the point pressure detection component (7) is placed inside the cover (507) for load-bearing test of a local area on the surface of the photovoltaic panel (10), and the external cause generation module (6) acts inside the two covers (507) and is used to test the degree of deformation of the photovoltaic panel (10) under high temperature or cold conditions; It also includes an image acquisition head (8) arranged inside the frame (1) and used for acquiring images of the photovoltaic panel (10) after testing.

2. The photovoltaic module load testing device according to claim 1, characterized in that: The transmission assembly (5) disposed at the upper position comprises two hydraulic cylinders (501) fixed to the top of the frame (1), and mounting bars (502) fixed to the telescopic ends of the two hydraulic cylinders (501); It also includes an electric telescopic rod (503) and a transmission assembly (5) arranged in the middle and on both sides of the installation bar (502); The U-shaped frame (504) to which the telescopic end of the mounting bar (502) is fixed has two groups of ring sleeves (506) distributed inside and outside arranged at the opposite ends thereof through two columns (505), each group of ring sleeves (506) includes two ring sleeves (506), and two cover shells (507) are respectively connected to the two groups of ring sleeves (506), and when the electric telescopic rod (503) is extended or shortened, the meshing transmission assembly (5) can drive the two cover shells (507) to deflect downward or upward and form a semicircular structure.

3. The photovoltaic module load testing device according to claim 2, characterized in that: The meshing transmission assembly (5) comprises mounting frames (509) respectively fixed to two ends of the mounting strip (502), and each mounting frame (509) is provided with a rack (510); And teeth (511) are fixed on the outer wall of each of the housings (507), and the teeth (511) are meshed with corresponding racks (510).

4. The photovoltaic module load testing device according to claim 1, characterized in that: A rubber strip (508) is provided at the bottom edge of each cover shell (507).

5. The photovoltaic module load testing device according to claim 1, characterized in that: The point pressure detection component (7) comprises a gas generator (704) arranged on the top of the frame (1), and a plurality of gas pipes (701) arranged at the output end of the gas generator (704), which pass through a plurality of through holes opened on the top of the frame (1) and extend into the interior of the frame (1); and a plurality of air bags (702) arranged on the inner walls of the two housings (507), the plurality of air bags (702) being in one-to-one communication with ends of the plurality of air pipes (701) away from the gas generator (704); It also includes a plurality of pneumatic pressure rods (703) arranged on the inner side of each airbag (702) and used for load testing of a local area of ​​the photovoltaic panel (10).

6. The photovoltaic module load testing device according to claim 5, characterized in that: The operating end of each pneumatic pressure rod (703) is provided with a rubber sleeve.

7. A photovoltaic module load testing device according to claim 5, characterized in that: The air pipes (701) are provided in four groups in a circular array.

8. The photovoltaic module load testing device according to claim 1, characterized in that: The external cause generating module (6) comprises two cooling and heating units (603), the two cooling and heating units (603) being arranged on both sides of the top of the frame (1), and a tube body (601) being respectively arranged at the output end of each cooling and heating unit (603), and one end of each of the tube bodies (601) away from the cooling and heating unit (603) passes through a through slot (602) provided on the side wall of the corresponding column (505) and is connected to the interior of the housing (507).

9. The photovoltaic module load testing device according to claim 1, characterized in that: The machine cover (2) comprises a plate body, an opening slot provided on the upper part of the plate body, and a door body detachably arranged on one side of the opening slot for opening and closing the opening slot.

10. A photovoltaic module load testing method, characterized in that: The photovoltaic module load testing device according to any one of claims 1 to 9 comprises: First, the photovoltaic panel (10) is placed on the step portion (4), the transmission assembly (5) is operated, and the two covers (507) form a semicircular structure and move downward to achieve pressure on the surface of the photovoltaic panel (10) to perform a range load resistance test on the photovoltaic panel (10); After the range load resistance test is completed, when the two covers (507) form a semicircle and contact the photovoltaic panel (10) to increase pressure or fit without pressure, the gas generator (704) is operated, and the pneumatic pressure rod (703) performs a local load test on the photovoltaic panel (10) through the expansion or retraction of the air bag (702); When the photovoltaic panel (10) is subjected to a range or local load test, a high temperature or cold condition is created through the external cause generation module (6), thereby achieving a load test of the photovoltaic panel (10) in a harsh environment.

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