A photovoltaic module performance testing device

Abstract

The present application relates to photovoltaic module testing technical field, specifically to a kind of photovoltaic module performance testing device, including supporting mechanism and pressure mechanism installed on supporting mechanism;Supporting mechanism is made of support frame and mounting bracket, support frame is used to support fixed photovoltaic module, and mounting bracket is used to install fixed pressure mechanism;When photovoltaic module is in horizontal state, the steel pipe in containing box is evenly separated by separation component, and containing box moves down to simulate the static load of snow covering on photovoltaic module;When photovoltaic module is in inclined state, fixed plate is also inclined at the same angle, and multiple separation components are uniformly close to each other, the spacing of adjacent two steel pipes is reduced, simulating the uneven load received by photovoltaic module when it is inclined;By simulating the uniform static load of photovoltaic module in horizontal state, the non-uniform static load in inclined state and the non-uniform dynamic load in inclined state, the compression resistance performance detection result of photovoltaic module is more representative.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic module testing technology, specifically to a photovoltaic module performance testing device. Background Technology

[0002] Photovoltaic modules, commonly known as solar panels, are the core devices that directly convert sunlight into electrical energy. They consist of multiple solar cells connected in series or parallel and rigorously encapsulated for protection to ensure long-term, stable operation in outdoor environments.

[0003] Various performance tests are required during the R&D stage or before shipment of photovoltaic modules. Among these tests, the mechanical performance test of photovoltaic modules includes the static mechanical load test. The static load test mainly simulates the ability of photovoltaic modules to withstand snow accumulation and wind pressure outdoors. Generally, it is achieved by applying static pressure to the front of a horizontal photovoltaic module for one hour to simulate the stress on the photovoltaic module covered by snow. Currently, there are two methods for applying static pressure to horizontal photovoltaic modules. One method is to manually place sandbags on the photovoltaic module. This method is lower in cost but slower, as it requires manual placement of sandbags one by one on the photovoltaic module, and as evenly as possible. The other method is to use a vacuum suction cup array in a mechanical load testing machine to press the photovoltaic module with force. This method has higher testing efficiency and can perform positive and negative pressure cycles, but the corresponding equipment cost is also higher.

[0004] In addition, although horizontal placement testing is the current mainstream method, there is also a need for tilted placement testing. For scenarios where snow easily accumulates, such as high latitudes or mountainous areas, in addition to static pressure testing in a horizontal state, non-uniform load testing in a tilted state is also required. However, current load testing lacks low-cost testing equipment that can simulate both horizontal uniform loads and tilted non-uniform loads, so that laboratory simulations can better reflect actual usage scenarios. Summary of the Invention

[0005] This invention provides a photovoltaic module performance testing device to solve the problem of the lack of low-cost testing equipment capable of simulating both horizontal uniform loads and inclined non-uniform loads in related technologies.

[0006] This invention provides a photovoltaic module performance testing device, including a support mechanism and a pressure applying mechanism installed on the support mechanism; the support mechanism consists of a support frame and a mounting frame, the support frame is used to support and fix the photovoltaic module, and the mounting frame is used to install and fix the pressure applying mechanism; the mounting frame includes two front-to-back gate-shaped frames, and the opposite sides of the horizontal sections of the front and rear gate-shaped frames are provided with support grooves, and a fixing plate is rotatably overlapped between the two support grooves.

[0007] The pressure applying mechanism includes several electric push rods 2 fixed to the lower surface of the fixed plate. The bottom end of the electric push rods 2 is connected to a receiving box. Multiple pressure sensors are set at the bottom of the receiving box. Multiple steel pipes are placed inside the receiving box, and two adjacent steel pipes are separated by a partition component. The pressure applying mechanism also includes a distance adjustment component for synchronously adjusting the distance between two adjacent partition components.

[0008] When the photovoltaic module is in a horizontal position, the steel pipes inside the housing are evenly separated by the partition components. The electric push rod 2 moves the housing down to simulate the static load of snow covering the photovoltaic module. When the photovoltaic module is tilted, the fixing plate also tilts at the same angle, and multiple partition components move downward together. The distance between two adjacent steel pipes decreases to simulate the uneven load on the photovoltaic module when it is tilted.

[0009] In one possible implementation, the support frame includes a main support and two auxiliary supports that slide left and right on the main support. The photovoltaic module is placed on the auxiliary supports, and the auxiliary supports are fixed to the main support and the photovoltaic module by fasteners.

[0010] In one possible implementation, the receiving box includes a box body fixed to the bottom end of the electric push rod, with the front and left sides of the box body being open. A front cover is fixed to the front opening of the box body by bolts, and a side sealing door is rotatably connected to the left opening of the box body.

[0011] In one possible implementation, a rectangular through hole is provided at the top center of the box body, two adjustment components are provided at the front and rear, and the pressure application mechanism also includes four lifting components fixed at the four corners of the rectangular through hole at the top of the box body. The lifting components include three electric push rods and L-shaped rods fixed at the top of the three electric push rods, and the corresponding left and right L-shaped rods are fixedly connected to the two ends of the adjustment components.

[0012] In one possible implementation, the partition assembly includes a rectangular housing, a top support that slides vertically within the rectangular housing, and two wedge plates that slide horizontally within the rectangular housing. The two wedge plates penetrate the left and right side walls of the rectangular housing, are symmetrically distributed, and are connected by multiple springs. An extension plate is connected to the opposite side of each of the two wedge plates. The top support consists of a trapezoidal plate located between the two extension plates and a strip plate fixed to the bottom end of the trapezoidal plate. The strip plate penetrates the bottom wall of the rectangular housing.

[0013] In one possible implementation, the adjustable distance assembly includes a scissor lift assembly, a fixing block fixed at the bottom of the hinge point in the middle of the scissor lift assembly, a rectangular block fixed at the top of the hinge point in the middle of the scissor lift assembly, and a strip groove for accommodating and supporting multiple rectangular blocks. The fixing block is fixedly connected to the top of the corresponding rectangular housing. The leftmost rectangular block is fixed to the strip groove, and the remaining rectangular blocks are slidably engaged with the strip groove. The rightmost rectangular block is slidably connected to the strip groove via an electric slider.

[0014] In one possible implementation, a connecting plate is integrally formed on the right end of the fixing plate, a connecting rod is fixed between the two door-shaped frames, and an electric push rod is installed on the connecting rod, with the top end of the electric push rod hinged to the bottom end of the connecting plate.

[0015] In one possible implementation, the bottom wall of the box has a corrugated structure on its upper surface, and a locking element is provided on the left side of the box to prevent the side door from flipping outward.

[0016] In one possible implementation, when the photovoltaic module is tilted, all the partition components are simultaneously lifted by the lifting component until the bottom of the top support is basically in contact with the top of the steel pipe. All the steel pipes continue to roll to the lower left under inertia. When all the steel pipes move to the previous position to the lower left, the lifting component drives all the partition components to descend, so that the partition components re-separate the distributed steel pipes.

[0017] In one possible implementation, the inclined surface of the wedge plate faces the steel pipe, and the inclined surface of the wedge plate is substantially in contact with the outer wall of the steel pipe.

[0018] The above-described one or more technical solutions in the embodiments of the present invention have at least the following technical effects:

[0019] I. This invention reduces the cost of the testing device by reducing the number of power components and sensors. When the steel pipe is evenly separated by the partition component, the force applied by the receiving box to the horizontal photovoltaic module can be more uniform. By using the spacing adjustment component to drive the partition components to move closer together, the steel pipe moves to the lower left as a whole under the action of the partition component. When the receiving box and the steel pipe apply force to the tilted photovoltaic module, non-uniform load simulation can be achieved.

[0020] Second, intermittently opening the side sealing door allows the lowest steel pipe to roll out of the box, thus simulating the scenario of snow sliding off the photovoltaic module. By raising the partition component, the steel pipe can be made to roll forward to a position under inertia. The partition component is then used to re-separate the components, simulating the scenario of snow slowly sliding off. By simulating the photovoltaic module under uniform static load in a horizontal state, non-uniform static load in an inclined state, and non-uniform dynamic load in an inclined state, the compressive performance test results of the photovoltaic module are made more representative. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a photovoltaic module performance testing device.

[0022] Figure 2 This is a three-dimensional structural diagram of the photovoltaic module performance testing device from another perspective.

[0023] Figure 3 yes Figure 2 A 3D structural diagram omitting the front windshield.

[0024] Figure 4 This is one of the partial cross-sectional 3D views of a photovoltaic module performance testing device.

[0025] Figure 5 yes Figure 4 An enlarged schematic diagram of region A in the middle.

[0026] Figure 6 This is the second partial cross-sectional 3D view of the photovoltaic module performance testing device.

[0027] Figure 7 yes Figure 6 Enlarged schematic diagram of region B in the middle.

[0028] In the diagram: 1. Support mechanism; 11. Main bracket; 12. Auxiliary bracket; 13. Fixing component; 14. Door frame; 15. Support groove; 16. Fixing plate; 17. Electric push rod one; 2. Photovoltaic module; 3. Pressing mechanism; 31. Electric push rod two; 32. Receiving box; 321. Box body; 322. Front cover; 323. Side sealing door; 33. Dividing component; 331. Rectangular shell; 332. Wedge plate; 333. Top support component; 34. Adjustment component; 341. Scissor lift component; 342. Fixing block; 343. Strip groove; 344. Rectangular block; 35. Steel pipe; 36. Lifting component; 361. Electric push rod three; 362. L-shaped rod. Detailed Implementation

[0029] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Please see Figure 1 , Figure 2 and Figure 3A photovoltaic module performance testing device includes a support mechanism 1 and a pressure-applying mechanism 3 mounted on the support mechanism 1. The support mechanism 1 consists of a support frame and a mounting frame. The support frame is used to support and fix the photovoltaic module 2, and the mounting frame is used to install and fix the pressure-applying mechanism 3. The support frame includes a main support 11 and two auxiliary supports 12 that are slidably mounted on the main support 11. The photovoltaic module 2 is placed on the auxiliary supports 12, and the auxiliary supports 12 are fixed to the main support 11 and to the photovoltaic module 2 by fasteners 13. The mounting frame includes two portal frames 14 that are distributed front to back and fixed to the main support 11. Support grooves 15 are provided on opposite sides of the horizontal sections of the two portal frames 14, and a fixing plate 16 is rotatably overlapped between the two support grooves 15.

[0031] According to the size specifications of the photovoltaic module 2, the auxiliary support 12 is moved on top of the main support 11 so that the auxiliary support 12 supports the bottom two ends of the photovoltaic module 2. Then, the fixing member 13 is fixed to the main support 11 with bolts to restrict the movement of the auxiliary support 12. After the photovoltaic module 2 is placed on the auxiliary support 12, the fixing member 13 is fixed to the auxiliary support 12 again with bolts to squeeze and limit the front and rear sides of the photovoltaic module 2.

[0032] Please see Figure 1 , Figure 3 and Figure 4 The pressure applying mechanism 3 includes several electric push rods 31 fixed to the lower surface of the fixed plate 16. The bottom ends of the electric push rods 31 are connected to a receiving box 32. The receiving box 32 contains a number of steel pipes 35, and two adjacent steel pipes 35 are separated by a separating component 33. The pressure applying mechanism 3 also includes a distance adjusting component 34 for synchronously adjusting the distance between the multiple separating components 33.

[0033] The receiving box 32 includes a box body 321 fixed to the bottom end of the electric push rod 31. Multiple pressure sensors are provided at the bottom end of the box body 321. The front and left sides of the box body 321 are open, and a rectangular through hole is provided at the center of the top of the box body 321. The separator component 33 and the distance adjustment component 34 can enter the box body 321 through the rectangular through hole. The front opening of the box body 321 is fixed with a front cover 322 by bolts. When it is necessary to remove a small number of steel pipes 35, the front cover 322 can be removed. A side sealing door 323 is rotatably connected inside the left opening of the box body 321. A locking component is provided on the left side of the box body 321 to prevent the side sealing door 323 from opening outward.

[0034] Please see Figure 4 and Figure 5The bottom wall of the box 321 has a corrugated structure that increases the friction between the steel pipe 35 and the bottom wall. The partition component 33 includes a rectangular shell 331, a top support 333 that slides vertically inside the rectangular shell 331, and two wedge plates 332 that slide horizontally inside the rectangular shell 331. The two wedge plates 332 pass through the left and right side walls of the rectangular shell 331 respectively. The two wedge plates 332 are symmetrically distributed and connected by multiple springs. Extension plates are connected to the opposite sides of the two wedge plates 332. The top support 333 consists of a trapezoidal plate located between the two extension plates and a strip plate fixed to the bottom end of the trapezoidal plate. The strip plate passes through the bottom wall of the rectangular shell 331.

[0035] As the partition assembly 33 moves downwards as a whole, the bottom end of the strip plate will first contact the bottom wall of the box 321, and the movement of the strip plate will be hindered. As the rectangular shell 331 drives the wedge plate 332 to continue to move downwards, the trapezoidal plate will push the two wedge plates 332 away from each other, so that the inclined surface of the wedge plate 332 gradually approaches the corresponding steel pipe 35 until it separates and limits the two adjacent steel pipes 35. It should be noted that the inclined surface of the wedge plate 332 does not need to press against the steel pipe 35, but only needs to be close to the outer wall of the steel pipe 35 to limit the back and forth swaying of the steel pipe 35.

[0036] Please see Figure 4 , Figure 5 and Figure 7 Two adjustable spacing components 34 are arranged at the front and rear. The adjustable spacing components 34 include a scissor lift assembly 341, a fixing block 342 fixed at the bottom of the hinge point in the middle of the scissor lift assembly 341, a rectangular block 344 fixed at the top of the hinge point in the middle of the scissor lift assembly 341, and a strip groove 343 for accommodating and supporting multiple rectangular blocks 344. The fixing block 342 is fixedly connected to the top of the corresponding rectangular housing 331. The leftmost rectangular block 344 is fixed to the strip groove 343, and the remaining rectangular blocks 344 are slidably engaged with the strip groove 343. The rightmost rectangular block 344 is slidably connected to the strip groove 343 through an electric slider. When the rightmost rectangular block 344 moves under the action of the electric slider, the remaining rectangular blocks 344 will follow and move under the action of the scissor lift assembly 341, thereby realizing the equal spacing adjustment of the fixing blocks 342, and then driving the separator assembly 33 to adjust at equal spacing through the fixing blocks 342.

[0037] Please see Figure 6In order to realize the vertical movement of the separating component 33, the pressure applying mechanism 3 also includes four lifting components 36 fixed at the four corners of the rectangular through hole at the top of the box body 321. The lifting components 36 include electric push rods 361 and L-shaped rods 362 fixed at the top of the electric push rods 361. The bottom ends of the corresponding left and right L-shaped rods 362 are fixedly connected to the two ends of the strip groove 343. The extension and retraction of the electric push rods 361 drives the adjusting component 34 to rise and fall, thereby driving the separating component 33 to rise and fall. When the distance of the separating component 33 descends is different, the distance of the wedge plate 332 pushed by the top support 333 will change, so that the two wedge plates 332 are separated to different degrees.

[0038] When simulating the stress on photovoltaic module 2 under snow cover, there are two scenarios: In one scenario, photovoltaic module 2 is in a horizontal state. First, electric push rod 361 retracts, causing the pitch adjustment component 34 and the separator component 33 to descend. When the top support component 333 stops moving, electric push rod 361 continues to retract, causing the wedge plate 332 to gradually approach the corresponding steel pipe 35. The spring is gradually stretched. At this time, the steel pipe 35 in the housing box 32 is evenly separated by the separator component 33. Then, multiple electric push rods 31 extend synchronously, causing the housing box 32 to descend and apply pressure to the upper surface of photovoltaic module 2. The pressure sensor at the bottom of the box 321 senses the pressure value in real time. By observing the changes in the appearance of photovoltaic module 2 before and after pressure and detecting whether the electrical performance of photovoltaic module 2 is affected before and after pressure, it is determined whether photovoltaic module 2 can work normally under the current pressure.

[0039] Another scenario involves the photovoltaic module 2 being tilted. To simulate the load on the photovoltaic module 2 under tilted conditions, a hydraulic cylinder lifts the right end of the photovoltaic module 2 to a certain height, causing it to tilt at a certain angle. The fixing plate 16 and the housing 321 also tilt synchronously at the same angle. To prevent the fixing plate 16 from being pushed up in the opposite direction when the electric push rod 31 extends and applies pressure to the housing 32 on the photovoltaic module 2, the angle of the fixing plate 16 in the tilted state is kept fixed. Figure 3 As shown, a connecting plate is integrally formed on the right end of the fixed plate 16, and a connecting rod is fixed between the two door-shaped frames 14. An electric push rod 17 is installed on the connecting rod. The top end of the electric push rod 17 is hinged to the bottom end of the connecting plate. When the tilt angle of the photovoltaic module 2 changes, the electric push rod 17 will lift the right end of the fixed plate 16, so that the tilt angle of the fixed plate 16 is consistent with the tilt angle of the photovoltaic module 2.

[0040] Then, the electric actuator 361 extends, driving the rectangular housing 331 to rise via the adjusting assembly 34. This causes the wedge plate 332 to rise along with the rectangular housing 331. Under the tension of the spring, the two wedge plates 332 move closer together. The extension plate on the wedge plate 332 gradually moves upward along the inclined plane of the trapezoidal plate, causing the wedge plate 332 to gradually move away from the corresponding steel pipe 35. Under inertia, the steel pipe 35 rolls to the lower left and re-contacts the wedge plate 332 on its left side. Then, the two adjusting assemblies 34 simultaneously drive multiple separation groups. As the separator 33 moves, the steel pipe 35 also moves until the distance between two adjacent steel pipes 35 gradually decreases. At this time, the number of steel pipes 35 in the lower half of the photovoltaic module 2 increases, while the number of steel pipes 35 in the upper half of the photovoltaic module 2 decreases. This simulates the uneven load on the photovoltaic module 2 caused by the snow covering it when the photovoltaic module 2 is tilted (when the snow covers the tilted photovoltaic module 2, the pressure in the lower half is greater than the pressure in the upper half).

[0041] In addition, by opening the left-side sealing door 323, the leftmost steel pipe 35 can roll out from the box 321, which can simulate the stress situation of the photovoltaic module 2 when the snow at the bottom slides off the upper surface of the photovoltaic module 2.

[0042] When all the separating components 33 are lifted synchronously by the lifting component 36 until the bottom of the top support 333 is slightly higher than the top of the steel pipe 35, all the steel pipes 35 continue to roll to the left under the action of inertia. The corrugated bottom wall increases the friction of the steel pipes 35 when they roll, preventing all the steel pipes 35 from quickly gathering together. When all the steel pipes 35 move to the left to the corresponding previous position, the lifting component 36 quickly drives all the separating components 33 to descend, so that the separating components 33 re-separate the distributed steel pipes 35. This process is repeated to simulate the situation where snow gradually slides off the upper surface of the photovoltaic module 2.

[0043] It should be noted that when simulating the situation of snow sliding down, the box 321 only slightly presses on the photovoltaic module 2.

[0044] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0045] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integral connection, or a sliding connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0046] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A photovoltaic module performance testing apparatus comprising a support mechanism and a pressure applying mechanism mounted on the support mechanism; characterized in that: The support mechanism is composed of a support frame and a mounting frame, the support frame is used for supporting and fixing the photovoltaic module, and the mounting frame is used for mounting and fixing the pressure applying mechanism; The mounting frame comprises two front and rear distributed door-shaped frames, and the opposite sides of the horizontal sections of the two door-shaped frames are provided with bearing grooves, and the two bearing grooves are rotationally connected with a fixed plate; The pressure applying mechanism comprises a plurality of electric push rods II fixed on the lower surface of the fixed plate, the bottom end of the electric push rod II is connected with a containing box, the bottom of the containing box is provided with a plurality of pressure sensors, a plurality of steel pipes are placed in the containing box, and the left and right adjacent two steel pipes are separated by a separation assembly, the pressure applying mechanism further comprises a distance adjusting assembly for synchronously adjusting the distance between the adjacent two separation assemblies; The containing box comprises a box body fixed on the bottom end of the electric push rod II, the front side and the left side of the box body are open, the front side opening of the box body is fixed with a front cover through bolts, and the left side opening of the box body is rotationally connected with a side sealing door; The top center of the box body is provided with a rectangular through hole, the distance adjusting assembly is provided with two, the pressure applying mechanism further comprises four lifting assemblies fixed on the four corners of the rectangular through hole at the top of the box body, the lifting assembly comprises an electric push rod III and an L-shaped rod fixed on the top end of the electric push rod III, and the left and right corresponding L-shaped rods are fixedly connected with the two ends of the distance adjusting assembly; The separation assembly comprises a rectangular shell, a top support slidingly installed in the rectangular shell and two wedge-shaped plates slidingly installed in the rectangular shell, the two wedge-shaped plates penetrate through the left and right side walls of the rectangular shell, the two wedge-shaped plates are symmetrically distributed, and the two are connected by a plurality of springs, the opposite sides of the two wedge-shaped plates are connected with extension plates, the top support is composed of a trapezoidal plate between the two extension plates and a strip-shaped plate fixed on the bottom end of the trapezoidal plate, and the strip-shaped plate penetrates through the bottom wall of the rectangular shell; When the photovoltaic module is in a horizontal state, the steel pipes in the containing box are uniformly separated by the separation assembly, the electric push rod II drives the containing box to move downward to simulate the static load of the accumulated snow on the photovoltaic module; When the photovoltaic module is in an inclined state, the fixed plate is also inclined by the same angle, and the plurality of separation assemblies are uniformly close to each other downward, the distance between the adjacent two steel pipes is reduced, and the uneven load received by the photovoltaic module when it is inclined is simulated.

2. The photovoltaic module performance testing apparatus of claim 1, wherein: The support frame comprises a main support and two auxiliary supports slidingly installed on the main support, the photovoltaic module is placed on the auxiliary support, and the auxiliary support and the main support and the photovoltaic module are fixed by fixing pieces.

3. The photovoltaic module performance testing apparatus of claim 1, wherein: The distance adjusting assembly comprises a scissors assembly, a fixed block fixed on the bottom end of the middle hinge point of the scissors assembly, a rectangular block fixed on the top end of the middle hinge point of the scissors assembly, and a strip-shaped groove for containing a plurality of rectangular blocks, the fixed block is fixedly connected with the top of the corresponding rectangular shell, the leftmost rectangular block is fixed with the strip-shaped groove, the remaining rectangular blocks are in sliding fit with the strip-shaped groove, and the rightmost rectangular block is in sliding connection with the strip-shaped groove through an electric sliding block.

4. The photovoltaic module performance testing apparatus of claim 1, wherein: The right end of the fixed plate is integrally formed with a connecting plate, a connecting rod is fixed between the two door-shaped frames, and an electric push rod I is installed on the connecting rod, and the top end of the electric push rod I is hingedly connected with the bottom end of the connecting plate.

5. The photovoltaic module performance testing apparatus of claim 1, wherein: The upper surface of the bottom wall of the box body is a corrugated structure, and the left side of the box body is rotationally provided with a locking member for limiting the outward turning of the side sealing door.

6. The photovoltaic module performance testing apparatus of claim 1, wherein: When the photovoltaic assembly is in an inclined state, all the partition assemblies are synchronously lifted by the lifting assembly until the bottom of the top support substantially abuts against the top of the steel pipe, and all the steel pipes continue to roll downward to the left under the action of inertia, when all the steel pipes move to the left to the corresponding previous position, the lifting assembly drives all the partition assemblies to descend, so that the partition assemblies redivide the distributed steel pipes.

7. The photovoltaic module performance testing apparatus of claim 1, wherein: The inclined surface of the wedge-shaped plate faces the steel pipe, and the inclined surface of the wedge-shaped plate substantially abuts against the outer wall of the steel pipe.

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