A photovoltaic module fault detection apparatus

Abstract

This invention discloses a photovoltaic module fault detection device, relating to the technical field of photovoltaic panel EL testing equipment. It includes an EL testing camera for detecting internal defects in solar cell modules; a camera base fixed to the bottom of the EL testing camera, with a positioning block fixed to the bottom of the camera base, and a fixing unit for quick installation and removal of the EL testing camera on the outer side of the positioning block; and a telescopic component installed at the bottom of the fixing unit, with three sets of support components rotatably mounted on the outer side of the telescopic component, and a storage component at the bottom of the telescopic component. This invention, while fixing the EL testing camera and locking it in place, simultaneously drives the transmission unit through the drive component, thereby automatically unfolding the support components. Simultaneously, the storage component stably expands the three sets of support diagonal rods to form a triangular support structure. Installation and bracket unfolding are completed synchronously, eliminating the need for step-by-step operations, effectively reducing preparation time and improving testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel EL testing equipment technology, specifically a photovoltaic module fault detection device. Background Technology

[0002] During the manufacturing process, photovoltaic modules are prone to defects such as microcracks, broken grids, and poor soldering, which can affect the overall power generation efficiency and service life. EL testing is a common method for identifying internal defects in photovoltaic modules. During the testing process, an EL test camera needs to be aimed at the photovoltaic module to complete image acquisition.

[0003] Existing EL testing devices have some inconveniences in practical use: when testing photovoltaic modules of different specifications or adjusting the testing position, it is usually necessary to use a bracket to adjust the height and angle of the EL test camera. In existing testing devices, the brackets are mostly fixed structures, with cumbersome disassembly and assembly steps, and inconvenient storage and transfer, which is not conducive to outdoor field testing operations. At the same time, the existing quick-installation structure can generally only realize the quick installation of the camera, but cannot simultaneously complete the deployment of the bracket. The operation needs to be carried out in steps, with many steps, and the test preparation time is long, which affects the testing efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic module fault detection device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a photovoltaic module fault detection device, comprising an EL test camera for detecting internal defects in a solar cell module; a camera base fixed to the bottom of the EL test camera, a positioning block fixed to the bottom end of the camera base, and a fixing unit for quickly installing and removing the EL test camera on the outer side of the positioning block; a telescopic component installed at the bottom of the fixing unit, three sets of support components rotatably mounted on the outer side of the telescopic component, and a storage component at the bottom of the telescopic component; and a transmission unit installed on the outer side of the bottom of the fixing unit for assisting the storage component in quick storage.

[0006] Preferably, the fixing unit includes a housing, a slewing bearing is fixed inside the housing, an internal gear ring is rotatably connected to the inner side of the slewing bearing, four sets of gears are meshed in an array on the inner side of the internal gear ring, a shaft is fixed in the middle hole of the gear, a positioning cam is fixed at the top of the shaft, a positioning groove is provided on the outer side of the positioning block to slide with the positioning cam, the shaft is rotatably connected to the housing through a bearing, a drive assembly is provided at the bottom end of one of the shafts, and the top end of the telescopic assembly is fixedly connected to the housing.

[0007] Preferably, the telescopic component includes a positioning cylinder, a lifting rod is slidably sleeved inside the positioning cylinder, a hinge seat is fixedly connected to the top of the positioning cylinder, a positioning bolt is provided between the hinge seat and the lifting rod, and the top end of the support component is rotatably connected to the hinge seat.

[0008] Preferably, the support assembly includes a support rod, the top of which is rotatably connected to the hinge seat, a tapered rubber block is fixed to the bottom end of the support rod, one end of the storage assembly is rotatably connected to the support rod, and one of the rotating shaft ends of the support rod is drively connected to the output end of the transmission unit.

[0009] Preferably, the storage assembly includes a limiting sleeve that is slidably fitted onto the outer wall of the positioning cylinder, and three sets of rotating rods are rotatably connected to the outer side of the limiting sleeve. The end of each rotating rod away from the limiting sleeve is rotatably connected to the corresponding supporting inclined rod.

[0010] Preferably, the transmission unit includes a worm gear, one side of which is engaged with a worm wheel. The worm wheel is fixedly sleeved to the rotating shaft end of one of the supporting inclined rods. An external spline rod is fixed to the top of the worm gear. An internal spline sleeve is slidably sleeved on the outer side of the external spline rod. A second shaft is fixed to the top of the internal spline sleeve. The second shaft is rotatably connected to the bottom of the housing. The worm gear is rotatably connected to the hinge seat through a bearing seat. A second gear is fixedly sleeved on the outer side of the second shaft. The second gear is drively connected to the drive assembly.

[0011] Preferably, the drive assembly includes a drive rod fixedly connected to the bottom end of one of the shafts, a gear three is fixedly sleeved on the outer side of the drive rod, the gear three and the gear two are meshed, and a rotating block is fixed to the bottom end of the drive rod.

[0012] Preferably, the outer surface of the rotating block is provided with anti-slip texture, which is a strip-shaped protrusion evenly distributed along the periphery of the drive rod.

[0013] Preferably, the diameter of the third gear is larger than the diameter of the second gear.

[0014] Preferably, the top of the housing has a plug-in hole, the inner diameter of which is adapted to the outer diameter of the positioning block, and the positioning block is inserted into the plug-in hole.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] This invention completes the installation and locking of the EL test camera through the fixing unit, and at the same time, it can drive the transmission unit to operate synchronously through the drive component, thereby linking the support component to automatically unfold. At the same time, the storage component stably opens the three sets of support diagonal rods to form a triangular support structure. The installation and bracket unfolding are completed simultaneously, without the need for step-by-step operation, effectively reducing the time spent on test preparation and improving test efficiency.

[0017] This invention allows for flexible adjustment of the detection height of the EL test camera via a telescopic component, adapting to the height adjustment requirements of photovoltaic modules of different specifications and different testing scenarios. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the EL test camera performing testing in this invention;

[0019] Figure 2 This is a schematic diagram of the overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the fixing unit of the present invention;

[0021] Figure 4 This is a top view of a partially sectional section of the structure in this invention;

[0022] Figure 5 This is a structural schematic diagram of the telescopic component, storage component, and support component of the present invention;

[0023] Figure 6 This is a schematic diagram of the transmission unit of the present invention;

[0024] Figure 7 for Figure 6 Enlarged schematic diagram of the structure of region A in the middle.

[0025] In the diagram: 1. EL test camera; 2. Camera base; 3. Positioning block; 4. Fixing unit; 5. Telescopic assembly; 6. Support assembly; 7. Storage assembly; 8. Transmission unit; 9. Housing; 10. Slewing bearing; 11. Internal gear ring; 12. Gear 1; 13. Shaft 1; 14. Positioning cam; 15. Positioning groove; 16. Drive assembly; 17. Insertion hole; 18. Positioning cylinder; 19. Lifting rod; 20. Hinge seat; 21. Positioning bolt; 22. Supporting diagonal rod; 23. Conical rubber block; 24. Limit sleeve; 25. Rotating rod; 26. Worm gear; 27. Worm wheel; 28. External spline rod; 29. ​​Internal spline sleeve rod; 30. Shaft 2; 31. Gear 2; 32. Drive rod; 33. Gear 3; 34. Rotating block. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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 are within the scope of protection of the present invention.

[0027] Example 1: Please refer to Figures 1-7 The diagram shows a photovoltaic module fault detection device, including an EL test camera 1 for detecting internal defects in solar cell modules; a camera base 2 fixed to the bottom of the EL test camera 1, a positioning block 3 fixed to the bottom of the camera base 2, a fixing unit 4 for quick installation and removal of the EL test camera 1 on the outside of the positioning block 3; a telescopic component 5 installed at the bottom of the fixing unit 4, three sets of support components 6 rotatably installed on the outside of the telescopic component 5, and a storage component 7 at the bottom of the telescopic component 5; and a transmission unit 8 installed on the outside of the bottom of the fixing unit 4 to assist the storage component 7 in quick storage.

[0028] In this solution, the EL test camera 1 is quickly assembled and disassembled using the fixing unit 4. While the camera is being installed and locked, the drive component 16 simultaneously drives the transmission unit 8. The transmission unit 8 drives one set of support components 6 to rotate, which in turn causes the other two sets of support components 6 to unfold synchronously via the storage component 7. The three sets of support components 6 automatically expand as they rotate, forming a stable triangular support structure. The camera installation is completed simultaneously with the unfolding of the support bracket, eliminating the need for step-by-step operations, reducing the steps required for test preparation, and effectively improving the efficiency of the test operation. When the device needs to be moved, the reverse operation can quickly complete the camera disassembly and the synchronous storage of the support components 6, making transfer and carrying more convenient. The telescopic component 5 allows for flexible adjustment of the overall height to adapt to the height adjustment requirements of different specifications of photovoltaic modules and different test scenarios, meeting the requirements of on-site testing.

[0029] For further details, please refer to [link / reference]. Figure 3 and Figure 4 The fixing unit 4 includes a housing 9, inside which a slewing bearing 10 is fixed. An internal gear ring 11 is rotatably connected to the inner side of the slewing bearing 10. Four sets of gears 12 are meshed in an array on the inner side of the internal gear ring 11. A shaft 13 is fixed in the middle hole of the gear 12. A positioning cam 14 is fixed at the top of the shaft 13. A positioning groove 15 is provided on the outer side of the positioning block 3, which is slidably connected to the positioning cam 14. The shaft 13 is rotatably connected to the housing 9 through a bearing. A drive assembly 16 is provided at the bottom of one of the shafts 13. The top of the telescopic assembly 5 is fixedly connected to the housing 9.

[0030] Among them, see Figure 6The top of the housing 9 is provided with a plug hole 17. The inner diameter of the plug hole 17 is adapted to the outer diameter of the positioning block 3. The positioning block 3 is plugged into the plug hole 17.

[0031] In this solution, after the positioning block 3 is inserted into the insertion hole 17 on the top of the housing 9, rotating the drive assembly 16 can drive one of the shafts 13 to rotate. The shaft 13 meshes with the internal gear ring 11 through the gear 12 to rotate, thereby synchronously driving the other three gears 12 and shaft 13 to rotate synchronously, so that the four sets of positioning cams 14 can be synchronously engaged into the corresponding positioning grooves 15 on the outside of the positioning block 3, thus quickly completing the locking and installation of the EL test camera 1. Reverse rotation can quickly unlock and disassemble it.

[0032] It should be noted that by setting the fixing unit 4, the support component 6 can be driven to unfold simultaneously while the EL test camera 1 is installed, without the need for additional separate operation of the bracket to unfold, simplifying the installation preparation process. At the same time, the four sets of positioning cams 14 lock the positioning block 3 from all sides, ensuring stable and reliable locking, which can effectively prevent the camera from shifting during the test and ensure the stability of image acquisition.

[0033] For further details, please refer to [link / reference]. Figure 5 The telescopic component 5 includes a positioning cylinder 18, a lifting rod 19 is slidably sleeved inside the positioning cylinder 18, a hinge seat 20 is fixedly connected to the top of the positioning cylinder 18, a positioning bolt 21 is provided between the hinge seat 20 and the lifting rod 19, and the top of the support component 6 is rotatably connected to the hinge seat 20.

[0034] It should be noted that the overall detection height of the EL test camera 1 can be flexibly adjusted by setting the telescopic component 5. The lifting rod 19 can be moved up and down to adjust the height by loosening the positioning bolt 21. After the adjustment is completed, the positioning bolt 21 can be tightened to lock it. The operation is convenient and can adapt to the testing needs of photovoltaic modules of different sizes and specifications.

[0035] For further details, please refer to [link / reference]. Figure 5 The support assembly 6 includes a support rod 22, the top of which is rotatably connected to the hinge seat 20, and a conical rubber block 23 is fixed to the bottom end of the support rod 22. One end of the housing assembly 7 is rotatably connected to the support rod 22, and the shaft end of one of the support rods 22 is connected to the output end of the transmission unit 8.

[0036] It should be noted that by setting the support component 6, a stable triangular support structure can be formed after unfolding. The conical rubber block 23 at the bottom can increase the friction with the ground, improve the overall stability of the support, prevent the device from tipping over or shifting during the testing process, and ensure the smooth progress of the testing process.

[0037] For further details, please refer to [link / reference]. Figure 5The storage component 7 includes a limiting sleeve 24 that is slidably sleeved with the outer wall of the positioning cylinder 18. Three sets of rotating rods 25 are rotatably connected to the outer side of the limiting sleeve 24. The end of the rotating rod 25 away from the limiting sleeve 24 is rotatably connected to the corresponding support inclined rod 22.

[0038] It should be noted that the storage component 7 enables the synchronous rotation, unfolding, and storage of the three support rods 22: when one of the support rods 22 is driven to rotate and unfold by the transmission unit 8, it will push the limiting sleeve 24 to slide downward along the outer wall of the positioning cylinder 18 through the corresponding rotating rod 25, and then push the remaining two support rods 22 to rotate outward synchronously through the other two rotating rods 25, so that the three sets of support rods 22 can be unfolded synchronously to form a stable triangular support; when the support rods 22 are rotated in the opposite direction to retract, the support rods 22 pull the rotating rod 25, causing the limiting sleeve 24 to slide upward, so that the three sets of support rods 22 can be simultaneously retracted and placed against the outside of the positioning cylinder 18 to complete the storage, greatly reducing the space occupied after storage and making it convenient to transfer and carry.

[0039] The procedure for detecting internal defects in solar cell modules in this solution is as follows:

[0040] First, place the device in the testing position, loosen the positioning bolt 21 to adjust the extension length of the lifting rod 19, adjust the EL test camera 1 to a suitable height, and then tighten the positioning bolt 21 to complete the height lock. Then, insert the positioning block 3 at the bottom of the EL test camera 1 into the insertion hole 17 at the top of the housing 9. Rotate the drive assembly 16 to drive the four sets of positioning cams 14 to rotate synchronously and engage with the positioning groove 15 to complete the camera lock. During this process, the drive assembly 16 simultaneously drives the corresponding support rod 22 to rotate outward around the hinge seat 20 through the transmission unit 8, thereby linking the other two sets of support rods 22 to expand outward synchronously under the action of the storage assembly 7. Finally, the three sets of support rods 22 are opened synchronously to form a stable triangular support structure, completing the rapid deployment of the device. Then, the EL test camera 1 can be used to acquire EL images of the photovoltaic module to complete the fault and defect detection. When the detection is completed and needs to be stored and transferred, the drive assembly 16 is rotated in the opposite direction to unlock the positioning block 3, and at the same time, the three sets of support rods 22 are driven to retract synchronously, which can quickly complete the disassembly and storage. The whole process is convenient to operate, and the unfolding, installation and disassembly and storage can be completed in one step, effectively improving the efficiency of the testing operation.

[0041] Example 2: Refer to Figure 6 and Figure 7 As shown, this embodiment further explains the first embodiment, the difference being that the working method of the storage component 7 and the support component 6 is optimized.

[0042] Specifically, the transmission unit 8 includes a worm 26, a worm wheel 27 meshing on one side of the worm 26, the worm wheel 27 being fixedly sleeved with the shaft end of one of the supporting inclined rods 22, an external spline rod 28 being fixedly fixed at the top of the worm 26, an internal spline sleeve rod 29 being slidably sleeved on the outer side of the external spline rod 28, a shaft 30 being fixedly fixed at the top of the internal spline sleeve rod 29, the shaft 30 being rotatably connected to the bottom of the housing 9, and the worm 26 being rotatably connected to the hinge seat 20 through a bearing seat, a gear 31 being fixedly sleeved on the outer side of the shaft 30, and the gear 31 being pulsatorically connected to the drive assembly 16.

[0043] The drive assembly 16 includes a drive rod 32 fixedly connected to the bottom end of one of the shafts 13. A gear 33 is fixedly sleeved on the outer side of the drive rod 32. The gear 33 and the gear 2 are meshed together. A rotating block 34 is fixed to the bottom end of the drive rod 32.

[0044] It should be noted that the camera mounting and locking and the support component 6 unfolding are synchronized through the setup of the drive component 16 and the transmission unit 8, without the need for additional operation. Furthermore, the worm gear 26 and worm wheel 27 transmission have a reverse self-locking characteristic, which can prevent the support rod 22 from automatically retracting under gravity, thus ensuring the stability of the support structure.

[0045] In this solution, when the rotating block 34 drives the drive rod 32 and shaft 13 to rotate to complete the camera locking process, the drive rod 32 synchronously drives the gear 33 to rotate. The gear 33 meshes and drives the gear 21 to rotate, which in turn drives the shaft 20, the inner spline sleeve 29, the outer spline rod 28, and the worm 26 to rotate synchronously. The worm 26 meshes and drives the worm wheel 27 to rotate. The worm wheel 27 can then drive the corresponding support inclined rod 22 to rotate, completing the synchronous deployment of the support assembly 6. The entire linkage process is smooth and stable, and no additional operation or steps are required to achieve synchronous completion of installation and support deployment.

[0046] It should be noted that the outer surface of the rotating block 34 is provided with anti-slip texture. The anti-slip texture is a strip-shaped protrusion evenly distributed around the drive rod 32, which makes it easy to hold when rotating the drive rod 32, effectively avoids slipping, and makes the rotation operation smoother and less strenuous.

[0047] In addition, the diameter of gear 33 is larger than that of gear 21, which allows the rotation speed of worm 26 to match the rotation speed requirement of support rod 22, and the rotation amplitude of support rod 22 to match the locking amplitude of the four sets of positioning cams 14. This ensures that when the camera is locked in place, the support component 6 is also fully extended, avoiding insufficient or excessive extension of the support, and ensuring coordinated linkage action.

[0048] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended technical solutions and their equivalents.

Claims

1. A photovoltaic module fault detection device, comprising: EL test camera for detecting internal defects in solar cell modules (1); Its characteristic is that it further includes: A camera base (2) is fixed to the bottom of the EL test camera (1), and a positioning block (3) is fixed to the bottom end of the camera base (2). A fixing unit (4) for quick installation and removal of the EL test camera (1) is provided on the outside of the positioning block (3); and, A telescopic assembly (5) is installed at the bottom of the fixed unit (4). Three sets of support assemblies (6) are rotatably mounted on the outside of the telescopic assembly (5). A storage assembly (7) is also provided at the bottom of the telescopic assembly (5). A transmission unit (8) installed on the bottom outer side of the fixing unit (4) to assist the storage assembly (7) in quick storage.

2. The photovoltaic module fault detection device according to claim 1, characterized in that: The fixing unit (4) includes a housing (9), a slewing bearing (10) is fixed inside the housing (9), an internal gear ring (11) is rotatably connected to the inner side of the slewing bearing (10), four sets of gears (12) are meshed on the inner side of the internal gear ring (11), a shaft (13) is fixed in the middle hole of the gear (12), a positioning cam (14) is fixed at the top of the shaft (13), a positioning groove (15) is provided on the outer side of the positioning block (3) and is slidably connected to the positioning cam (14), the shaft (13) is rotatably connected to the housing (9) through a bearing, a drive assembly (16) is provided at the bottom end of one of the shafts (13), and the top end of the telescopic assembly (5) is fixedly connected to the housing (9).

3. The photovoltaic module fault detection device according to claim 2, characterized in that: The telescopic component (5) includes a positioning cylinder (18), a lifting rod (19) is slidably sleeved inside the positioning cylinder (18), a hinge seat (20) is fixedly connected to the top of the positioning cylinder (18), a positioning bolt (21) is provided between the hinge seat (20) and the lifting rod (19), and the top of the support component (6) is rotatably connected to the hinge seat (20).

4. A photovoltaic module fault detection apparatus according to claim 3, wherein: The support assembly (6) includes a support rod (22), the top of which is rotatably connected to the hinge seat (20), and a conical rubber block (23) is fixed to the bottom end of the support rod (22). One end of the storage assembly (7) is rotatably connected to the support rod (22), and the shaft end of one of the support rods (22) is connected to the output end of the transmission unit (8).

5. A photovoltaic module fault detection apparatus according to claim 4, wherein: The storage component (7) includes a limiting sleeve (24) that is slidably sleeved with the outer wall of the positioning cylinder (18). Three sets of rotating rods (25) are rotatably connected to the outer side of the limiting sleeve (24). The end of the rotating rod (25) away from the limiting sleeve (24) is rotatably connected to the corresponding supporting inclined rod (22).

6. A photovoltaic module fault detection apparatus according to claim 4, wherein: The transmission unit (8) includes a worm (26), a worm wheel (27) meshing on one side of the worm (26), the worm wheel (27) being fixedly sleeved with the shaft end of one of the supporting inclined rods (22), an external spline rod (28) being fixedly fixed at the top of the worm (26), an internal spline sleeve rod (29) being slidably sleeved on the outer side of the external spline rod (28), a shaft two (30) being fixedly fixed at the top of the internal spline sleeve rod (29), the shaft two (30) being rotatably connected to the bottom of the housing (9), and the worm (26) being rotatably connected to the hinge seat (20) through a bearing seat, a gear two (31) being fixedly sleeved on the outer side of the shaft two (30), and the gear two (31) being pulsatorically connected to the drive assembly (16).

7. A photovoltaic module fault detection apparatus according to claim 6, wherein: The drive assembly (16) includes a drive rod (32) fixedly connected to the bottom end of one of the shafts (13), a gear three (33) fixedly sleeved on the outside of the drive rod (32), the gear three (33) meshing with the gear two (31), and a rotating block (34) fixed at the bottom end of the drive rod (32).

8. A photovoltaic module fault detection device according to claim 7, characterized in that: The outer surface of the rotating block (34) is provided with anti-slip texture, which is a strip-shaped protrusion evenly distributed along the periphery of the drive rod (32).

9. A photovoltaic module fault detection apparatus according to claim 7, wherein: The diameter of gear three (33) is greater than the diameter of gear two (31).

10. A photovoltaic module failure detection apparatus according to claim 2, wherein: The top of the housing (9) is provided with a plug hole (17), the inner diameter of the plug hole (17) is adapted to the outer diameter of the positioning block (3), and the positioning block (3) is inserted into the plug hole (17).

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