Photovoltaic inverter test stand

Abstract

The application provides a photovoltaic inverter test support, which comprises a base for support, two mounting racks symmetrically arranged and fixedly connected to the upper end of the base, an installation plate fixedly connected to the upper end of the two mounting racks, and a bearing assembly for supporting the photovoltaic inverter installed in the installation plate. The bearing assembly can temporarily support the photovoltaic inverter. The installation personnel can first place the photovoltaic inverter on the bearing assembly, and then perform fixing installation, wiring and other operations, so that the installation difficulty and the falling risk are greatly reduced. After the installation of the photovoltaic inverter is completed, the bearing assembly can be stored in the installation plate, the real wall-hanging installation of the photovoltaic inverter is simulated, the accuracy of test data is ensured, the plurality of wiring ports on the connecting frame allow different cables to be separately wired, the cables are prevented from being entangled and pulled, the short circuit risk is reduced, and the repeatability and accuracy of the test are improved.

Description

Technical Field

[0001] This utility model relates to the field of inverter testing technology, and more specifically, to a photovoltaic inverter testing bracket. Background Technology

[0002] Photovoltaic inverters are the core equipment of photovoltaic power generation systems. Their main function is to convert the direct current (DC) generated by solar panels into alternating current (AC) that meets the requirements of the power grid. These devices are typically installed outdoors or in industrial environments, and are generally wall-mounted. This means that they are directly fixed to a wall or bracket through mounting holes on the back, leaving the bottom suspended to allow for good air circulation and heat dissipation. Before a photovoltaic inverter is put on the market, it must undergo rigorous testing, including but not limited to electrical performance testing, efficiency testing, temperature rise testing, electromagnetic compatibility testing, and environmental adaptability testing. These tests are crucial for verifying the safety, reliability, efficiency, and lack of harmful interference to the power grid and surrounding electronic equipment of the photovoltaic inverter.

[0003] Currently, when testing photovoltaic (PV) inverters in the laboratory, they are mostly placed directly on a standard test bench or temporarily fixed to a support plate. On a standard test bench, the bottom of the PV inverter contacts the surface, severely obstructing its heat dissipation and causing inaccurate temperature rise test data. When fixing it to a vertical support plate, due to the significant weight of the PV inverter, two or more operators are usually required: one to hold the equipment while the other aligns the holes and tightens the screws. This process is not only labor-intensive but also carries the risk of the equipment falling and damaging it, or injuring personnel, resulting in low installation efficiency. Therefore, we have proposed an improvement: a PV inverter testing bracket. Summary of the Invention

[0004] The purpose of this invention is to address the current practice in laboratory testing of photovoltaic inverters, where they are mostly placed directly on a standard test bench or temporarily fixed to a support plate. A standard test bench causes the bottom of the inverter to contact the surface, severely obstructing its heat dissipation and leading to distorted temperature rise test data. When fixing it to a vertical support plate, due to the inverter's weight, two or more operators are typically required to work together: one to hold the device while the other aligns the holes and tightens the screws. This process is not only labor-intensive but also carries the risk of the device falling and damaging the equipment or injuring personnel, resulting in low installation efficiency.

[0005] To achieve the above-mentioned objectives, this invention provides a photovoltaic inverter test bracket to improve the aforementioned problems.

[0006] The application is as follows: A photovoltaic inverter test bracket includes a base for support, with two symmetrically arranged mounting brackets fixedly connected to the upper end of the base. The upper ends of the two mounting brackets are jointly fixedly connected to a mounting plate, and a load-bearing component for supporting the photovoltaic inverter is installed inside the mounting plate.

[0007] As a preferred technical solution of this application, the supporting component includes a storage groove, and two symmetrically arranged supporting plates are rotatably connected to the inner wall of the storage groove. Two symmetrically arranged connecting blocks are fixedly connected to one side of the mounting plate near the bottom, and a wedge-shaped block is fixedly connected to the upper end of each of the two connecting blocks.

[0008] As a preferred technical solution of this application, a rotating groove is provided on the lower part of the side of the bearing plate away from the connecting block, and a rotating rod is rotatably connected to the inner wall of the rotating groove. Two first bevel gears arranged symmetrically are fixedly sleeved on the outside of the rotating rod.

[0009] As a preferred technical solution of this application, two second bevel gears are rotatably connected to the bottom of the inner wall of the rotating groove. The two first bevel gears mesh with the two second bevel gears respectively. The output ends of the two second bevel gears penetrate the inner wall of the rotating groove and are fixedly connected to the upper end of the two support plates respectively.

[0010] As a preferred technical solution of this application, a handle is rotatably connected to the lower side of the mounting plate, the output end of the handle passes through the mounting plate, and the output end of the handle is fixedly connected to one end of the rotating rod. A rotating disk is fixedly sleeved on the outside of the handle.

[0011] As a preferred technical solution of this application, a limiting rod slides through the rotating disk, and multiple limiting grooves arranged in a circular array are provided on one side of the mounting plate near the bottom. The limiting rod and the limiting grooves are engaged and locked together. Two stops are fixedly sleeved on the outside of the limiting rod, and the two stops are located on both sides of the rotating disk.

[0012] As a preferred technical solution of this application, a connecting frame is fixedly connected to one side of the upper end of the base, and the connecting frame has multiple wire passages.

[0013] As a preferred technical solution of this application, the mounting plate has multiple internal threaded holes on one side, and a back plate is fixedly connected to the side of the mounting plate with internal threaded holes.

[0014] As a preferred technical solution of this application, the inner wall of the storage slot is fixedly connected with anti-slip pads, and the anti-slip pads are made of rubber.

[0015] As a preferred technical solution of this application, each of the four corners of the lower end of the base is fixedly connected with a pad, and the lower end of each of the four pads is provided with anti-slip texture.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: In the scheme of this application: To address the current limitations of laboratory testing methods for photovoltaic (PV) inverters, which often involve placing the inverter directly on a standard test bench or temporarily fixing it to a support plate, it's important to understand that standard test benches cause the inverter's bottom to contact the surface, severely obstructing heat dissipation and distorting temperature rise test data. Fixing it to a vertical support plate, due to the inverter's weight, typically requires two or more operators: one to hold the device while another aligns holes and tightens screws. This process is not only labor-intensive but also carries the risk of the device falling and damaging it, potentially injuring personnel. To address the issue of low installation efficiency, this application utilizes an unfolded support component to temporarily support the photovoltaic inverter when it is fixed to one side of the mounting plate. Installers can place the inverter on the support component before performing fixing, wiring, and other operations, greatly reducing installation difficulty and the risk of detachment. After the photovoltaic inverter is installed, the support component can be retracted into the mounting plate, simulating a real wall-mounted installation of the photovoltaic inverter and ensuring the accuracy of test data. Multiple wiring ports on the connection frame allow for separate wiring of different cables, avoiding cable tangling and pulling, reducing the risk of short circuits, and improving the repeatability and accuracy of testing. Attached Figure Description

[0017] Figure 1 A schematic diagram of the main structure of the photovoltaic inverter test bracket provided in this application; Figure 2 This is a schematic diagram of the storage groove and anti-slip pad structure of the photovoltaic inverter test bracket provided in this application; Figure 3 A schematic diagram of the rotating groove structure of the photovoltaic inverter test bracket provided in this application; Figure 4 A schematic diagram of the rotating disk structure of the photovoltaic inverter test bracket provided in this application; Figure 5 This is a schematic diagram of the wedge-shaped block structure of the photovoltaic inverter test bracket provided in this application.

[0018] The image shows: 1. Base; 2. Mounting bracket; 3. Mounting plate; 4. Supporting components; 401. Storage slot; 402. Support plate; 403. Connecting block; 404. Wedge block; 405. Rotating groove; 406. Rotating rod; 407. First bevel gear; 408. Second bevel gear; 409. Handle; 410. Rotating disk; 411. Limiting rod; 412. Limiting groove; 413. Stop block; 5. Connecting bracket; 6. Cable threading port; 7. Internal threaded hole; 8. Back plate; 9. Anti-slip pad; 10. Pad plate. Detailed Implementation

[0019] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0020] As described in the background section, when testing photovoltaic inverters in the laboratory, they are mostly placed directly on a regular test bench or temporarily fixed to a support plate. A regular test bench will cause the bottom of the photovoltaic inverter to contact the surface, which will seriously obstruct the heat dissipation channel at the bottom and cause the temperature rise test data to be distorted. When fixing it to a vertical support plate, due to the large weight of the photovoltaic inverter, it usually requires two or more operators to work together. One person holds the equipment while the other performs the drilling and screwing operations. This process is not only labor-intensive, but also has the risk of the equipment falling and damaging or injuring people due to slipping, resulting in low installation efficiency.

[0021] To address this technical problem, this utility model provides a photovoltaic inverter test bracket, which is used for photovoltaic inverter performance testing and certification.

[0022] For details, please refer to Figures 1-5 The photovoltaic inverter test bracket specifically includes: The base 1 is used for support. Two symmetrically arranged mounting brackets 2 are fixedly connected to the upper end of the base 1. The mounting plate 3 is fixedly connected to the upper end of the two mounting brackets 2. The load-bearing component 4 for supporting the photovoltaic inverter is installed in the mounting plate 3.

[0023] The photovoltaic inverter test bracket provided by this utility model allows the unfolded support component 4 to temporarily support the photovoltaic inverter when it is fixed to one side of the mounting plate 3. The installer can first place the photovoltaic inverter on the support component 4 and then carry out fixed installation, wiring and other operations, which greatly reduces the installation difficulty and the risk of falling off. After the photovoltaic inverter is installed, the support component 4 can be stored in the mounting plate 3 to simulate the real wall-mounted installation of the photovoltaic inverter and ensure the accuracy of the test data. The multiple wiring ports 6 on the connecting frame 5 allow different cables to be wired separately, avoiding the cables from getting tangled and pulled, reducing the risk of short circuits and improving the repeatability and accuracy of the test.

[0024] It is worth noting that the base 1, mounting bracket 2, and mounting plate 3 are all made of insulating material, which completely cuts off the leakage current path and ground loop formed through the device itself from the structure. This effectively prevents the photovoltaic inverter casing from accidentally becoming energized or experiencing voltage fluctuations during testing. At the same time, it avoids electromagnetic coupling and interference that may be introduced by the metal bracket, providing a clean and reliable insulating environment for electromagnetic compatibility testing and ensuring the accuracy and authenticity of the test results.

[0025] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0026] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0027] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0028] Example 1, please refer to Figures 1-5A photovoltaic inverter test bracket includes a base 1 for support. Two symmetrically arranged mounting brackets 2 are fixedly connected to the upper end of the base 1. A mounting plate 3 is fixedly connected to the upper end of both mounting brackets 2. A load-bearing component 4 for supporting the photovoltaic inverter is installed within the mounting plate 3. The device is placed in a designated test area. First, the operator pulls the limiting rod 411 outwards, causing it to disengage from the current limiting slot 412. Then, the user rotates the handle 409. The output end of the handle 409 drives the rotating rod 406 to rotate, causing two first bevel gears 407 on the rotating rod 406 to rotate accordingly. The two second bevel gears 408 meshing with the drive rotate, and the output end of the second bevel gears 408 drives the two support plates 402 to rotate outward by ninety degrees from the receiving slot 401 until the two support plates 402 unfold to a state perpendicular to the mounting plate 3. Then the user inserts the limiting rod 411 into the new limiting slot 412 to lock the rotating disk 410, thereby fixing the unfolded support plates 402 in the designated position. At this time, the unfolded support plates 402 and the wedge block 404 together form a stable temporary support platform. Then the user places the photovoltaic inverter on top of the two unfolded support plates 402. The photovoltaic inverter was then fixed in place using screws, which greatly reduced the installation difficulty and the risk of it falling off. After the photovoltaic inverter was completely fixed, the limit rod 411 was pulled out again, and the handle 409 was rotated in the opposite direction to drive the two support plates 402 back into the storage slot 401. Then the limit rod 411 was inserted into the limit slot 412 again to lock it in place, preventing the support plates 402 from popping out accidentally. At this time, the photovoltaic inverter was only fixed to the mounting plate 3 by the screws on its back, and the bottom of the photovoltaic inverter was in a completely suspended state, simulating the wall-mounted installation environment of the photovoltaic inverter in actual application, ensuring the accuracy and authenticity of the test.

[0029] Furthermore, such as Figure 1 , Figure 2 and Figure 5As shown, the support component 4 includes a storage groove 401. Two symmetrically arranged support plates 402 are rotatably connected to the inner wall of the storage groove 401. Two symmetrically arranged connecting blocks 403 are fixedly connected to the lower side of one side of the mounting plate 3. Wedge blocks 404 are fixedly connected to the upper end of each of the two connecting blocks 403. Through the synergistic effect of the symmetrically arranged support plates 402 and wedge blocks 404, the wedge blocks 404 can support the lower end of the support plates 402 after they are unfolded. This provides a stable and reliable temporary support platform for users when installing photovoltaic inverters, allowing operators to safely and effortlessly place the photovoltaic inverters on the support plates 402, freeing up their hands for alignment and fastening operations. This greatly improves the convenience and safety of the installation process. At the same time, the support plates 402 can be rotatably connected to the storage groove 401, providing a structural foundation for subsequent complete storage and simulating a real wall-mounted installation environment. The support plates 402, connecting blocks 403, and wedge blocks 404 are all made of insulating materials.

[0030] Furthermore, such as Figures 3-4 As shown, a rotating groove 405 is provided on the lower side of the support plate 402 away from the connecting block 403. A rotating rod 406 is rotatably connected to the inner wall of the rotating groove 405. Two symmetrically arranged first bevel gears 407 are fixedly sleeved on the outside of the rotating rod 406. Two second bevel gears 408 are rotatably connected to the bottom of the inner wall of the rotating groove 405. The two first bevel gears 407 and the two second bevel gears 408 mesh with each other. The output ends of the two second bevel gears 408 penetrate the inner wall of the rotating groove 405 and are fixedly connected to the upper ends of the two support plates 402. The rotating rod 406 drives the two symmetrically arranged first bevel gears 407, thereby driving the two second bevel gears 408 to rotate. This allows the two support plates 402 to be controlled to perform completely synchronous and symmetrical unfolding or folding movements with only a single operation, greatly improving the portability, reliability and structural stability of the operation. Furthermore, the first bevel gears 407 and the second bevel gears 408 are made of high-strength insulating material.

[0031] Furthermore, such as Figures 3-4As shown, a handle 409 is rotatably connected to the lower side of the mounting plate 3. The output end of the handle 409 passes through the mounting plate 3 and is fixedly connected to one end of the rotating rod 406. A rotating disk 410 is fixedly sleeved on the outside of the handle 409. A limit rod 411 slides through the rotating disk 410. Multiple limit grooves 412 arranged in a circular array are opened on the lower side of the mounting plate 3. The limit rod 411 and the limit grooves 412 are engaged. Two stops 413 are fixedly sleeved on the outside of the limit rod 411. The two stops 413 are located on both sides of the rotating disk 410. The handle 409 facilitates the user to rotate the rotating rod 406. At the same time, by using the cooperation of the limit rod 411 and the multiple circular array limit grooves 412, the multi-position locking of the unfolding angle of the support plate 402 is realized quickly and reliably, ensuring that the support plate 402 can remain fixed in any working position, thereby ensuring the safety during temporary support and the repeatability of the state during testing.

[0032] Example 2 further optimizes the photovoltaic inverter test bracket provided in Example 1, specifically, as follows: Figure 1 As shown, a connecting frame 5 is fixedly connected to one side of the upper end of the base 1. The connecting frame 5 has multiple wire-passing ports 6. Various connecting wires of the photovoltaic inverter are passed through different wire-passing ports 6 on the connecting frame 5, which realizes the separation of cables and avoids the cables from getting tangled and pulled. This not only makes the test environment neat and standardized, but also reduces the accidental short circuits or test result deviations caused by messy cable layout, and improves the repeatability of the test.

[0033] Example 3 further optimizes the photovoltaic inverter test bracket provided in Example 1, specifically, as follows: Figure 1 and Figure 2 As shown, the mounting plate 3 has multiple internal threaded holes 7 on one side, and a back plate 8 is fixedly connected to the side of the mounting plate 3 with internal threaded holes 7. By opening multiple internal threaded holes 7, a direct, reliable and flexible installation interface is provided for photovoltaic inverters of different types and specifications, which greatly enhances the versatility of the equipment. The added back plate 8 greatly enhances the overall structural strength and rigidity of the mounting plate 3, and provides a stable and reliable installation reference surface for photovoltaic inverters.

[0034] Furthermore, such as Figure 2 As shown, anti-slip pads 9 are fixedly connected to the inner wall of the storage groove 401. The anti-slip pads 9 are made of rubber. When the support plate 402 is in the storage state, the anti-slip pads 9 fill the gap between the inner wall of the storage groove 401 and the support plate 402, increasing the friction between the support plate 402 and the storage groove 401 and improving the stability of the support plate 402.

[0035] Furthermore, such as Figure 1 and Figure 2As shown, pads 10 are fixedly connected to the four corners of the lower end of the base 1. The lower ends of the four pads 10 are provided with anti-slip textures. The pads 10 distributed at the four corners stably support the entire device, and the anti-slip textures on their lower surfaces greatly increase the friction with the ground, ensuring the stability and safety of the entire testing device and providing a stable basic platform for accurate measurement.

[0036] The photovoltaic inverter test bracket provided by this utility model is used as follows: The device is placed in the designated test area. First, the operator pulls the limiting rod 411 outward, disengaging it from the current limiting slot 412. Then, the user rotates the handle 409, causing the output end of the handle 409 to rotate the rotating rod 406. The two first bevel gears 407 on the rotating rod 406 rotate accordingly, driving the two meshing second bevel gears 408 to rotate. The output ends of the second bevel gears 408 drive the two support plates 402 to rotate 90 degrees outward from the receiving slot 401 until the two support plates 402 are unfolded perpendicular to the mounting plate 3. The user then inserts the limiting rod 411 into the new limiting slot 412, locking the rotating disk 410, thus fixing the unfolded support plates 402 in the designated position. At this point, the unfolded support plates 402 and the wedge block 404 together form a stable temporary support platform. The user then places the photovoltaic inverter on top of the two unfolded support plates 402. The photovoltaic inverter was then fixed in place using screws, which greatly reduced the installation difficulty and risk of detachment. After the photovoltaic inverter was completely fixed, the limit rod 411 was pulled out again, and the handle 409 was rotated in the opposite direction to drive the two support plates 402 back into the storage slot 401. Then the limit rod 411 was inserted into the limit slot 412 again to lock it in place, preventing the support plates 402 from popping out accidentally. At this time, the photovoltaic inverter was only fixed to the mounting plate 3 by the screws on its back, and the bottom of the photovoltaic inverter was in a completely suspended state, simulating the wall-mounted installation environment of the photovoltaic inverter in actual application, ensuring the accuracy and authenticity of the test. By passing the various connection wires of the photovoltaic inverter through different wire holes 6 on the connection frame 5, the cables are separated, avoiding tangling and pulling. This not only makes the testing environment neat and standardized, but also reduces accidental short circuits or test result deviations caused by messy cable layout, and improves the repeatability of the test.

[0037] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A photovoltaic inverter test bracket, characterized in that, The system includes a base (1) for support, with two symmetrically arranged mounting brackets (2) fixedly connected to the upper end of the base (1). A mounting plate (3) is fixedly connected to the upper end of both mounting brackets (2). A support assembly (4) for supporting the photovoltaic inverter is installed inside the mounting plate (3). The support assembly (4) includes a storage groove (401), with two symmetrically arranged support plates (402) rotatably connected to the inner wall of the storage groove (401). The mounting plate (3) is fixedly connected to a lower side of the mounting plate (3). There are two symmetrically arranged connecting blocks (403), and a wedge block (404) is fixedly connected to the upper end of each of the two connecting blocks (403). A rotating groove (405) is opened on the lower side of the bearing plate (402) away from the connecting blocks (403). A rotating rod (406) is rotatably connected to the inner wall of the rotating groove (405). Two symmetrically arranged first bevel gears (407) are fixedly sleeved on the outside of the rotating rod (406). Two second bevel gears are rotatably connected to the bottom of the inner wall of the rotating groove (405). (408) Two first bevel gears (407) mesh with two second bevel gears (408) respectively. The output ends of the two second bevel gears (408) penetrate the inner wall of the rotating groove (405), and the output ends of the two second bevel gears (408) are fixedly connected to the upper ends of the two bearing plates (402). A handle (409) is rotatably connected to the lower side of one side of the mounting plate (3). The output end of the handle (409) penetrates the mounting plate (3), and the output end of the handle (409) is fixedly connected to the upper end of the two bearing plates (402). A rotating disk (410) is fixedly fitted on the outside of the handle (409) and connected to one end of the rotating rod (406). A limiting rod (411) slides through the rotating disk (410). A plurality of limiting grooves (412) arranged in a ring array are provided on one side of the mounting plate (3) near the bottom. The limiting rod (411) and the limiting groove (412) are engaged and locked together. Two stops (413) are fixedly fitted on the outside of the limiting rod (411). The two stops (413) are located on both sides of the rotating disk (410).

2. A photovoltaic inverter test bracket according to claim 1, characterized in that, A connecting frame (5) is fixedly connected to one side of the upper end of the base (1), and multiple wire holes (6) are provided on the connecting frame (5).

3. A photovoltaic inverter test bracket according to claim 1, characterized in that, The mounting plate (3) has multiple internal threaded holes (7) on one side, and a back plate (8) is fixedly connected to the side of the mounting plate (3) with internal threaded holes (7).

4. A photovoltaic inverter test bracket according to claim 1, characterized in that, The inner wall of each storage slot (401) is fixedly connected with an anti-slip pad (9), which is made of rubber.

5. A photovoltaic inverter test bracket according to claim 1, characterized in that, Each of the four corners of the base (1) is fixedly connected with a pad (10), and the lower ends of the four pads (10) are provided with anti-slip texture.

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