A multi-line laser measuring device for measuring the warpage of a photovoltaic module after lamination

Abstract

The application relates to the technical field of laser detection, and discloses a photovoltaic module post-lamination warpage multi-line laser measuring device. The application comprises a device main body shell, a detection placement platform and a plurality of detection assemblies. The detection assemblies are intermittently moved along guide rails through the cooperation of intermittent gears and gear grooves, and are driven by a cam to press down an L-shaped plate in the intermittent interval, so that a plurality of reference rods abut against contact plates on a balance plate, so as to re-establish the measurement reference of the detection mechanism. A plurality of detection mechanisms form a multi-line laser measurement path. The application can reduce the influence of guide rail errors, transmission gaps and changes in moving postures on detection results, and improve the consistency and accuracy of multi-position detection of the post-lamination warpage of photovoltaic modules.

Description

Technical Field

[0001] This invention relates to the field of laser detection technology, and in particular to a multi-line laser measurement device for the warpage of photovoltaic modules after lamination. Background Technology

[0002] In the production of photovoltaic modules, materials such as solar cells, encapsulating films, glass, and backsheets need to be laminated after being stacked to form a stable laminated structure under heating, pressurization, and vacuum conditions. Due to differences in the coefficient of thermal expansion, curing shrinkage rate, and cooling characteristics of different materials, photovoltaic modules may experience a certain degree of overall bending, edge warping, or local warping during lamination and subsequent cooling. If the degree of warping is large, it will affect the positioning and fitting accuracy during subsequent framing, handling, and installation. Therefore, it is usually necessary to test the flatness or warping of the laminated photovoltaic modules to determine whether their geometric shape meets the requirements of subsequent processes.

[0003] Existing photovoltaic module warpage detection typically employs non-contact measurement methods such as laser displacement detection. This involves relative movement between the laser detection mechanism and the photovoltaic module to acquire height data at multiple locations on the module surface, thereby determining the degree of warpage. For larger photovoltaic modules, to obtain more complete detection results, the detection mechanism often needs to move multiple times or intermittently position itself along the guide rail. Factors such as guide rail straightness, sliding clearance, transmission errors, and support deformation caused by the weight of the detection mechanism itself can all cause slight height or posture changes at different measurement positions, which are then superimposed on the module height measurement results. Simply relying on improving the machining accuracy of the guide rail and transmission mechanism to reduce these errors not only increases equipment manufacturing and assembly costs but also makes it difficult to ensure a consistent measurement benchmark at each detection position under long-stroke, multi-point detection conditions. Summary of the Invention

[0004] The technical problem this invention aims to solve is that existing photovoltaic module warpage detection devices are easily affected by the straightness of the guide rail, transmission clearance, and changes in the posture of the detection mechanism when the detection mechanism moves along the guide rail for multi-position detection. This causes deviations in the measurement reference at different detection positions, thus affecting the accuracy of the warpage detection results. Therefore, we propose a multi-line laser measurement device for the warpage of photovoltaic modules after lamination.

[0005] To achieve the above objectives, this application adopts the following technical solution: a multi-line laser measurement device for the warpage of photovoltaic modules after lamination, comprising a main body shell and a detection placement platform disposed within the main body shell, the detection placement platform being connected to the main body shell via a first horizontal adjustment mechanism; multiple detection components are spaced apart above the detection placement platform, each detection component including a moving mechanism, a balance adjustment mechanism, and a detection mechanism; the moving mechanism includes a guide rail horizontally disposed within the main body shell, a slider slidably disposed on the guide rail, and a C-shaped plate connected to the slider, the guide rail having a toothed groove, the C-shaped plate having a drive motor, and the output end of the drive motor having an intermittent gear intermittently meshing with the toothed groove; The balancing mechanism includes an L-shaped plate located below the C-shaped plate. The L-shaped plate has a reference rod that extends upward and moves through the C-shaped plate. A return spring is provided between the L-shaped plate and the C-shaped plate. The detection mechanism is connected to the lower part of the L-shaped plate. Inside the main body shell of the equipment, there is also a balance plate located below the guide rail. The balance plate is connected to the main body shell of the equipment through a second horizontal adjustment mechanism. The balance plate has contact surfaces corresponding to each reference rod. The C-shaped plate is also rotatably equipped with a driven gear that cooperates with the intermittent gear transmission. The driven gear is connected to a cam. The cam drives the L-shaped plate to move downward in the pause range when the intermittent gear disengages from the tooth groove, so that each reference rod abuts the corresponding contact surface. Then, the detection mechanism detects the photovoltaic modules on the detection platform.

[0006] Preferably, the bottom of the main body shell of the equipment is provided with multiple adjustable balance feet, and the first horizontal adjustment mechanism is used to adjust the horizontal posture of the detection placement platform relative to the main body shell of the equipment.

[0007] Preferably, the second level adjustment mechanism is disposed between the balance plate and the main body shell of the equipment, and is used to adjust the balance plate so that multiple contact surfaces on the balance plate form a measurement reference corresponding to the detection placement platform.

[0008] Preferably, the C-shaped plate is provided with guide holes corresponding to each reference rod, and the inner diameter of the guide holes is larger than the outer diameter of the reference rod, so that when the L-shaped plate moves downward relative to the C-shaped plate, it can generate a slight attitude adjustment to adapt to each contact surface.

[0009] Preferably, three sets of reference rods are provided and spaced apart on the L-shaped plate. The three sets of reference rods correspond to the contact plates on the balance plate to form a three-point reference support before the detection mechanism performs the detection.

[0010] Preferably, the intermittent gear has a toothed section for meshing with the tooth groove and a toothless section for disengaging from the tooth groove. When the toothed section meshes with the tooth groove, it drives the C-shaped plate to move along the guide rail, and the toothless section corresponds to the rest detection interval of the detection component.

[0011] Preferably, the diameter of the driven gear is half the diameter of the intermittent gear.

[0012] Preferably, the top of the L-shaped plate is provided with an elastic compression mechanism corresponding to the cam. The elastic compression mechanism includes two guide grooves symmetrically arranged on the top of the L-shaped plate, movable blocks slidably arranged in the two guide grooves respectively, a connecting rod connecting the two movable blocks, and a pressure block connected to the connecting rod and sliding vertically relative to the L-shaped plate. A compression spring is provided between the movable block and the corresponding guide cylinder. The cam applies elastic downward pressure to the L-shaped plate through the pressure block.

[0013] Preferably, the detection mechanism is installed below the L-shaped plate via a connecting seat. The detection mechanism is a laser triangulation displacement measuring mechanism, used to obtain the height data of the corresponding measurement position of the photovoltaic module relative to the detection reference.

[0014] Preferably, multiple detection components are spaced apart above the detection placement platform, each detection mechanism forms a corresponding laser measurement line, and obtains height data of different positions of the photovoltaic module during the intermittent movement of each moving mechanism, so as to form a multi-line warpage measurement result of the photovoltaic module after lamination.

[0015] The technical effects and advantages of this invention are as follows:

[0016] This invention incorporates intermittent gears and toothed grooves in the moving mechanism of the detection component, enabling the detection mechanism to move intermittently according to a predetermined pitch. During the pause after each movement, a cam drives an L-shaped plate downwards, causing multiple reference rods to stably contact the contact plates on the balance plate. This re-establishes the measurement reference of the detection mechanism relative to the detection placement platform before formal testing, preventing guide rail straightness errors, slider clearances, and minor height and posture changes during movement from being directly transmitted to the laser detection results. Simultaneously, utilizing the allowance between the guide hole and the reference rods, along with an elastic compression mechanism, the L-shaped plate can undergo slight posture self-adaptation during downward pressure and form stable support through multi-point contact, reducing rigid impacts and over-constraint phenomena. Combined with multiple detection components, multiple laser measurement paths are formed, allowing the acquisition of height variation data in different areas while the photovoltaic module is in its natural placement state. This improves the consistency and accuracy of multi-position detection of photovoltaic module warpage after lamination and reduces reliance on high-precision long-stroke guide rails and complex motion control mechanisms. Attached Figure Description

[0017] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of the detection placement platform and multiple detection components of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of the detection component, guide rail and balance plate of the present invention.

[0021] Figure 4 This is a schematic diagram of the detection component, guide rail, and balance plate of the present invention from another perspective;

[0022] Figure 5 This is an exploded structural diagram of the C-shaped plate, L-shaped plate, and detection mechanism of the present invention;

[0023] Figure 6 This is a schematic diagram of the drive motor, intermittent gear, driven gear, and cam of the present invention;

[0024] Figure 7 This is a schematic diagram of the balance adjustment mechanism and elastic compression mechanism of the present invention.

[0025] Legend: 1. Main body shell of the equipment; 2. First horizontal adjustment mechanism; 3. Detection and placement platform; 4. Guide rail; 5. Gear groove; 6. Slider; 7. C-shaped plate; 8. Guide hole; 9. L-shaped plate; 10. Reference rod; 11. Return spring; 12. Connecting seat; 13. Detection mechanism; 14. Drive motor; 15. Intermittent gear; 16. Driven gear; 17. Cam; 18. Balance plate; 19. Contact plate; 20. Second horizontal adjustment mechanism; 21. Guide groove; 22. Movable block; 23. Connecting rod; 24. Pressure block; 25. Compression spring. Detailed Implementation

[0026] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0027] like Figures 1-7 As shown, the present invention provides a multi-line laser measurement device for the warpage of laminated photovoltaic modules, including a main body shell 1. The main body shell 1 forms the installation and protection space for the entire device. Multiple adjustable balance feet are provided below the main body shell 1. By adjusting the support height of each adjustable balance foot, the main body shell 1 can be initially leveled. A test placement platform 3 is provided inside the lower part of the main body shell 1. The test placement platform 3 is installed inside the main body shell 1 through a first horizontal adjustment mechanism 2. The first horizontal adjustment mechanism 2 can further adjust the horizontal attitude of the test placement platform 3, so that the laminated photovoltaic modules to be tested can be stably placed on the test placement platform 3 and a unified test placement benchmark can be established.

[0028] Multiple detection components are spaced apart above the detection placement platform 3. Each detection component includes a moving mechanism, a balance adjustment mechanism, and a detection mechanism 13. The multiple detection components can be distributed at intervals along the width direction of the detection placement platform 3. Each detection mechanism 13 corresponds to a different detection area on the photovoltaic module and can move intermittently in a predetermined direction under the drive of its respective moving mechanism, thereby forming multiple mutually spaced laser measurement paths on the surface of the photovoltaic module to obtain height change data of different areas of the photovoltaic module and to characterize the warping state of the photovoltaic module after lamination.

[0029] The moving mechanism includes a guide rail 4 fixedly installed between the inner walls of both sides of the main body shell 1 of the equipment. The guide rail 4 extends laterally above the detection placement platform 3. The bottom of the guide rail 4 is provided with toothed grooves 5 distributed along its length. A slider 6 is slidably installed on the guide rail 4. The slider 6 is fixedly connected to a C-shaped plate 7, so that the C-shaped plate 7 can move along the guide rail 4 via the slider 6. A drive motor 14 is fixedly installed on the outer wall of the C-shaped plate 7. The output end of the drive motor 14 extends into the interior of the C-shaped plate 7 and is fixedly connected to an intermittent gear 15. The intermittent gear 15 has a toothed area for meshing with the toothed grooves 5 and a toothless area that can disengage from the toothed grooves 5, so that when the drive motor 14 rotates continuously, it can drive the C-shaped plate 7 to move intermittently along the guide rail 4.

[0030] When the toothed area of ​​the intermittent gear 15 meshes with the toothed groove 5 at the bottom of the guide rail 4, the intermittent gear 15 is driven by the reaction force of the toothed groove 5 to move the drive motor 14, the C-shaped plate 7 and the slider 6 together along the guide rail 4, so that the balance adjustment mechanism and the detection mechanism 13 installed below the C-shaped plate 7 move synchronously a corresponding distance. When the intermittent gear 15 continues to rotate until the toothless area corresponds to the toothed groove 5, the intermittent gear 15 disengages from the toothed groove 5, the C-shaped plate 7 stops moving along the guide rail 4 and forms a corresponding pause detection interval, thereby providing a stable time interval for the subsequent detection mechanism 13 to re-establish the detection benchmark and perform detection.

[0031] The balance adjustment mechanism includes an L-shaped plate 9 disposed below the C-shaped plate 7. Multiple upwardly extending reference rods 10 are fixedly connected to the inner side of the L-shaped plate 9. In this embodiment, the reference rods 10 are preferably arranged in three groups and distributed at intervals. The lower part of the C-shaped plate 7 is provided with guide holes 8 corresponding to each reference rod 10. Each reference rod 10 moves through the corresponding guide hole 8. The inner diameter of the guide hole 8 is larger than the outer diameter of the reference rod 10, so that the reference rod 10 can not only move vertically in the guide hole 8, but also has a certain lateral movement margin. This allows the L-shaped plate 9 to tilt slightly relative to the C-shaped plate 7 after being subjected to downward pressure, so as to adapt to the contact state between the subsequent multiple reference rods 10 and the corresponding contact plates 19.

[0032] Each reference rod 10 is fitted with a return spring 11. The two ends of the return spring 11 abut or connect with the L-shaped plate 9 and the C-shaped plate 7 respectively, so that the L-shaped plate 9 is kept in a relatively upper position when it is not subjected to external downward pressure, and the lower end of the reference rod 10 is kept separated from the contact plate 19, thereby avoiding continuous friction between the reference rod 10 and the contact plate 19 during the movement of the detection component along the guide rail 4. When the L-shaped plate 9 is subjected to a downward force, the return spring 11 can be compressed and allow the L-shaped plate 9 to move downward. When the downward force is released, the return spring 11 can drive the L-shaped plate 9 and the reference rod 10 to return upward.

[0033] Inside the main body shell 1 of the equipment, below the guide rail 4, there is a balance plate 18. The balance plate 18 is horizontally installed inside the main body shell 1 and supported by a second horizontal adjustment mechanism 20. The second horizontal adjustment mechanism 20 can adjust the posture of the balance plate 18 relative to the detection placement platform 3, so that the balance plate 18 forms a detection reference corresponding to the detection placement platform 3 before the device detects. The surface of the balance plate 18 is fitted with a contact plate 19 corresponding to each reference rod 10. The contact plate 19 has a stable and positionally defined reference contact surface. When the three sets of reference rods 10 respectively abut against the corresponding contact plate 19, the height and tilt posture of the L-shaped plate 9 can be defined by multiple contact positions.

[0034] The inner wall of the C-shaped plate 7 is rotatably connected to a driven gear 16 below the intermittent gear 15. The driven gear 16 and the intermittent gear 15 form a transmission engagement. The diameter of the driven gear 16 is half the diameter of the intermittent gear 15, so that when the intermittent gear 15 rotates, it can drive the driven gear 16 to rotate at a corresponding transmission ratio. The end of the driven gear 16 is fixedly connected to a cam 17. The rotation phase of the cam 17 corresponds to the intermittent movement cycle of the intermittent gear 15. When the intermittent gear 15 disengages from the tooth groove 5 and enters the rest detection range, the cam 17 can gradually rotate to the downward pressing position towards the L-shaped plate 9, thereby forming a continuous engagement between the intermittent movement action of the moving mechanism and the downward pressing correction action of the balance adjustment mechanism.

[0035] The top of the L-shaped plate 9 is provided with an elastic compression mechanism corresponding to the cam 17. The elastic compression mechanism includes two guide grooves 21 symmetrically arranged on the top of the L-shaped plate 9. Each guide groove 21 has a movable block 22 slidably arranged in it. A compression spring 25 is provided between the movable block 22 and the corresponding guide groove 21. The two sets of movable blocks 22 are connected by a connecting rod 23. The connecting rod 23 is connected to a pressure block 24 that slides vertically with the L-shaped plate 9. The pressure block 24 is located below the cam 17 and can contact the cam 17. When the cam 17 rotates to the downward pressing position, it first acts on the pressure block 24. The pressure block 24 compresses the compression spring 25 through the connecting rod 23 and the movable block 22 and applies an elastic downward force to the L-shaped plate 9. This avoids the cam 17 directly and rigidly impacting the L-shaped plate 9 and allows the reference rod 10 to contact the contact plate 19 in a relatively gentle manner.

[0036] As the cam 17 continues to move downward, the L-shaped plate 9 overcomes the elastic force of the return spring 11 and moves downward relative to the C-shaped plate 7. The three sets of reference rods 10 move downward synchronously with the L-shaped plate 9 and approach the corresponding contact plates 19 respectively. Since the inner diameter of the guide hole 8 is larger than the outer diameter of the reference rod 10, when there is a slight difference in the time or height at which each reference rod 10 contacts the corresponding contact plate 19, the L-shaped plate 9 can produce a corresponding slight attitude adjustment under the action of elastic pressure until all three sets of reference rods 10 stably abut against the corresponding contact plates 19. The actual detection attitude of the L-shaped plate 9 and the detection mechanism 13 is re-determined through multiple reference contact positions, thereby reducing the influence of the straightness error of the guide rail 4, the clearance of the slider 6, and the height and tilt changes of the moving mechanism at different positions on the detection reference of the detection mechanism 13.

[0037] The testing mechanism 13 is installed below the L-shaped plate 9 via the connecting seat 12. The testing mechanism 13 adopts a laser triangulation displacement measurement mechanism. The testing mechanism 13 includes at least a laser emitting part and a receiving part for acquiring laser information of the surface to be tested. The laser emitting part projects laser onto the surface of the photovoltaic module on the testing platform 3. The receiving part obtains the height change of the corresponding measurement position based on the measurement information formed by the laser on the surface to be tested. By moving the testing mechanism 13 sequentially along the predetermined direction of the photovoltaic module and performing testing at each rest position, multiple height data on a testing path can be obtained. Multiple testing components form different laser measurement paths, thereby constituting multi-line laser testing of the laminated photovoltaic module.

[0038] During the specific testing, the adjustable balance feet at the bottom of the main body shell 1 of the equipment are used to initially level the entire machine. Then, the first horizontal adjustment mechanism 2 is used to adjust the testing placement platform 3, and the second horizontal adjustment mechanism 20 is used to adjust the balance plate 18, so that a preset and stable reference relationship is formed between the testing placement platform 3 and the balance plate 18. Subsequently, the laminated photovoltaic module is naturally placed on the testing placement platform 3. During the testing process, there is no need to apply a pressing force to the photovoltaic module to correct its warping state, thereby preserving the actual warping shape of the module in the testing placement state.

[0039] After the drive motor 14 is started, the toothed area of ​​the intermittent gear 15 first meshes with the toothed groove 5 and drives the C-shaped plate 7 to move along the guide rail 4. At this time, the L-shaped plate 9 is held in the upper position by the return spring 11, and the reference rod 10 is separated from the contact plate 19. Therefore, the detection component can move smoothly. When the intermittent gear 15 rotates to the toothless area and disengages from the toothed groove 5, the C-shaped plate 7 stops moving. At the same time, the driven gear 16 drives the cam 17 to enter the corresponding pressing stage. The cam 17 pushes the L-shaped plate 9 downward through the elastic compression mechanism until the three sets of reference rods 10 stably abut against the corresponding contact plates 19. At this time, the detection mechanism 13 re-establishes the detection posture with the reference determined by the balance plate 18 and detects the current area of ​​the photovoltaic module.

[0040] After the current position detection is completed, the driven gear 16 continues to drive the cam 17 to rotate and gradually move away from the pressure block 24. The elastic compression mechanism releases the downward pressure on the L-shaped plate 9, and the reset spring 11 drives the L-shaped plate 9 to reset upward and causes each reference rod 10 to leave the contact plate 19. Then, the toothed area of ​​the intermittent gear 15 re-enters the meshing state with the tooth groove 5 and drives the entire detection assembly to move to the next detection position. This cycle of movement, pause, downward correction, detection and reset is repeated so that each detection mechanism 13 can re-establish a relatively stable detection reference before each height detection.

[0041] Multiple detection components perform detection on different areas of the photovoltaic module in the manner described above. Each detection mechanism 13 obtains height data at multiple measurement positions along the corresponding path. The multiple detection paths together form multi-line measurement data covering different areas of the photovoltaic module. By comparing the height changes of different measurement positions relative to the detection reference, the overall curvature, edge warping, and height differences between different areas of the photovoltaic module can be obtained, which can be used to determine the degree of warping after the photovoltaic module is laminated. Furthermore, since the detection mechanism 13 first re-establishes the detection posture with the reference rod 10 and the contact plate 19 at each pause detection position, the influence of the accuracy changes of the moving mechanism itself on the consistency of the multi-position measurement results can be reduced.

[0042] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A multi-line laser measurement device for the warpage of a photovoltaic module after lamination, characterized in that, The device includes a main housing and a testing platform disposed within the main housing. The testing platform is connected to the main housing via a first horizontal adjustment mechanism. Multiple testing components are spaced apart above the testing platform. Each testing component includes a moving mechanism, a balance adjustment mechanism, and a testing mechanism. The moving mechanism includes a guide rail horizontally disposed within the main housing, a slider slidably disposed on the guide rail, and a C-shaped plate connected to the slider. The guide rail has toothed grooves, and the C-shaped plate has a drive motor. The output end of the drive motor has an intermittent gear that intermittently meshes with the toothed grooves. The balance adjustment mechanism includes an L-shaped plate located below the C-shaped plate. The L-shaped plate has a reference rod that extends upward and moves through the C-shaped plate. A return spring is provided between the L-shaped plate and the C-shaped plate. The detection mechanism is connected to the lower part of the L-shaped plate. The main body shell of the equipment also has a balance plate located below the guide rail. The balance plate is connected to the main body shell of the equipment through a second horizontal adjustment mechanism. The balance plate has contact surfaces corresponding to each reference rod. The C-shaped plate is also rotatably equipped with a driven gear that cooperates with the intermittent gear transmission. The driven gear is connected to a cam. The cam drives the L-shaped plate to move downward in the resting range when the intermittent gear disengages from the tooth groove, so that each reference rod abuts the corresponding contact surface. Then, the detection mechanism detects the photovoltaic modules on the detection platform.

2. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The bottom of the main body shell of the equipment is provided with multiple adjustable balance feet, and the first horizontal adjustment mechanism is used to adjust the horizontal posture of the detection placement platform relative to the main body shell of the equipment.

3. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The second leveling mechanism is located between the balance plate and the main body shell of the equipment, and is used to adjust the balance plate so that multiple contact surfaces on the balance plate form a measurement reference corresponding to the detection placement platform.

4. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The C-shaped plate is provided with guide holes corresponding to each reference rod. The inner diameter of the guide holes is larger than the outer diameter of the reference rod, so that when the L-shaped plate moves downward relative to the C-shaped plate, it can generate a slight attitude adjustment to adapt to each contact surface.

5. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 4, characterized in that, The reference rods are provided in three sets and are distributed at intervals on the L-shaped plate. The three sets of reference rods correspond to the contact plates on the balance plate to form a three-point reference support before the detection mechanism performs the detection.

6. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The intermittent gear has a toothed section for meshing with the tooth groove and a toothless section for disengaging from the tooth groove. When the toothed section meshes with the tooth groove, it drives the C-shaped plate to move along the guide rail. The toothless section corresponds to the rest detection interval of the detection component.

7. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 6, characterized in that, The diameter of the driven gear is half the diameter of the intermittent gear.

8. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The top of the L-shaped plate is provided with an elastic compression mechanism corresponding to the cam. The elastic compression mechanism includes two guide grooves symmetrically arranged on the top of the L-shaped plate, movable blocks slidably arranged in the two guide grooves respectively, a connecting rod connecting the two movable blocks, and a pressure block connected to the connecting rod and sliding vertically relative to the L-shaped plate. A compression spring is provided between the movable block and the corresponding guide cylinder. The cam applies elastic downward pressure to the L-shaped plate through the pressure block.

9. The multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 1, characterized in that, The detection mechanism is installed below the L-shaped plate via a connecting seat. The detection mechanism is a laser triangulation displacement measurement mechanism, used to obtain the height data of the corresponding measurement position of the photovoltaic module relative to the detection reference.

10. A multi-line laser measurement device for the warpage of a photovoltaic module after lamination according to claim 9, characterized in that, Multiple detection components are spaced apart above the detection placement platform. Each detection mechanism forms a corresponding laser measurement line and obtains height data of different positions of the photovoltaic module during the intermittent movement of each moving mechanism to form a multi-line warp measurement result of the photovoltaic module after lamination.

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