Photovoltaic module detection device and detection method

Abstract

The invention provides a photovoltaic module detection device and method, and relates to the field of photovoltaic module detection.The photovoltaic module detection device comprises a vacuum adsorption platform deck, a movable frame, a falling object simulation part, a clamping part and a half-corner part, a vacuum suction cup is arranged at the top of the vacuum adsorption platform deck and used for adsorbing and fixing a photovoltaic panel, it is ensured that the photovoltaic panel cannot move in the detection process, and the clamping part is used for clamping the photovoltaic panel; the detection stability is ensured; the top of the vacuum adsorption carrying table is slidably connected with moving frames, the number of the moving frames is matched with the number of the side edges of the photovoltaic panel, and the moving frames can move in the direction perpendicular to the side edges of the photovoltaic panel. Four core detection items including the gluing stability of the photovoltaic frame and the glass, the lateral pressure resistance of the frame, the foreign object collision resistance of the frame and the plate body corner resistance can be completed through the same equipment, multiple pieces of equipment do not need to be replaced, the detection process is simplified, the detection efficiency is greatly improved, meanwhile, the input cost of the detection equipment is reduced, and the detection efficiency is improved. And the detection requirements of large-scale production of the photovoltaic module are met.

Description

Technical Field

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

[0002] As the core component of a solar power generation system, the structural stability of photovoltaic modules directly determines the power generation efficiency and lifespan. A photovoltaic panel mainly consists of glass, a frame, and internal power generation components. The frame and glass are connected by adhesive, which is a crucial part ensuring the structural integrity of the photovoltaic panel.

[0003] During the production, transportation, and outdoor installation of photovoltaic modules, they are susceptible to various external impacts, leading to various structural damage problems: First, the adhesive connection between the frame and the glass is prone to delamination and cracking due to pulling and squeezing, which can cause the glass to loosen, water to enter, and damage the internal power generation components; Second, the frame itself is prone to deformation due to lateral squeezing forces, affecting the overall structural strength of the photovoltaic panel; Third, when used outdoors, the photovoltaic panel frame is susceptible to collisions with external objects such as hail. If the frame's impact resistance is insufficient, dents, damage, or even glass breakage may occur; Fourth, the corners of the photovoltaic panel, as stress concentration areas, are prone to cracking and damage under installation, docking, or external impacts, affecting the normal use of the photovoltaic module.

[0004] In existing technologies, most photovoltaic module testing equipment is designed for a single function, requiring multiple different devices to perform tests on adhesive stability, lateral compressive strength, impact resistance, and corner strength. This not only results in cumbersome and inefficient testing processes but also increases testing costs. Therefore, developing a photovoltaic module testing device that can achieve multi-dimensional integrated testing, high accuracy, and closely matches actual installation conditions has become an urgent technical problem to be solved in the field of photovoltaic testing equipment. Summary of the Invention

[0005] To overcome the above shortcomings, the present invention provides a photovoltaic module testing device and testing method, aiming to improve the technical problems of existing photovoltaic module testing devices, such as limited testing functions, low testing efficiency, insufficient testing accuracy, and inability to fully simulate actual outdoor stress scenarios.

[0006] This invention is implemented as follows: This invention provides a photovoltaic module testing device, comprising a vacuum adsorption stage, a moving frame, a falling object simulation part, a clamping part, and a half-angle part, the specific structure of which is as follows: The top of the vacuum adsorption stage is equipped with a vacuum suction cup for adsorbing and fixing the photovoltaic panel, ensuring that the photovoltaic panel will not shift during the testing process and guaranteeing the stability of the testing. The top of the vacuum adsorption stage is slidably connected with a movable frame, the number of which is adapted to the number of sides of the photovoltaic panel, and the movable frame can move in a direction perpendicular to the side of the photovoltaic panel to enable comprehensive testing of all sides of the photovoltaic panel.

[0007] The movable frame has a U-shaped structure, and its two horizontal ends can slide relative to or away from each other along the vertical end of the movable frame. The horizontal ends of the movable frame are vertically provided with a front flange and a rear flange, and a falling object simulation section is provided between the front flange and the rear flange. The front flange is used to apply an outward force to the photovoltaic panel frame to test the adhesive stability between the photovoltaic frame and the glass. The rear flange is used to apply an inward force to the photovoltaic panel frame to test the photovoltaic frame's ability to withstand lateral compressive forces. The falling object simulation section is used to simulate a scenario where an external object collides with the photovoltaic panel frame to test the photovoltaic panel frame's collision resistance.

[0008] The movable frame is also provided with at least two clamping parts, which can move along the length of the movable frame. By adjusting the clamping position of the clamping parts on the photovoltaic panel frame, the connection position between the support frame and the photovoltaic panel frame during actual installation of the photovoltaic panel can be accurately matched, so that the detection process conforms to the actual stress state of the photovoltaic panel and improves the detection accuracy.

[0009] The horizontal end of the movable frame is set with a 45° slope to facilitate the docking of two mutually perpendicular movable frames at the corner of the photovoltaic panel. The end of the movable frame is slidably connected with a half-corner section along the 45° slope direction. After the two mutually perpendicular movable frames are docked, the two half-corner sections can be spliced ​​to form an L-shaped full-corner section. The full-corner section is adapted to the corner of the photovoltaic panel frame. The full-corner section is equipped with a hanging lug for connecting with an external tension member. Under the action of the external tension member, a force can be applied obliquely to the full-corner section to detect the corner resistance of the photovoltaic panel.

[0010] Furthermore, the falling object simulation unit consists of multiple cylinders, with a falling object slidably connected inside each cylinder. The falling object is connected to the cylinder via an elastic reset component. When gas is injected into the cylinder, if the gas pressure is greater than the elastic force of the reset component, it will drive the falling object to move downwards, causing the falling object to apply force to the photovoltaic panel frame in a point-contact manner, simulating the collision of external objects such as hail with the photovoltaic panel frame, thereby testing the collision resistance of the photovoltaic panel frame. After the test is completed, the elastic reset component can drive the falling object to reset, facilitating the next test.

[0011] Furthermore, multiple cylinders are rotatably mounted on the same cylinder support via a rotating shaft. By adjusting the rotation angle of the rotating shaft, the falling angle of the object inside the cylinder can be changed, thereby simulating collision scenarios of external objects at different angles and improving the comprehensiveness of the detection.

[0012] Furthermore, each of the cylinders is connected to an external air pipe, and all external air pipes are connected to the same air supply pipe. Each external air pipe is equipped with a solenoid valve. By controlling the opening and closing of the solenoid valve, independent air supply can be achieved for one or more cylinders, thereby controlling the falling of one or more objects and simulating the scenario of different numbers of external objects colliding with the photovoltaic panel frame at the same time, thus enriching the detection scenarios.

[0013] Furthermore, the outer wall of the rotating shaft is provided with a sealing protrusion, and a sealing ring cavity is provided on the cylinder support for the sliding of the sealing protrusion. The sealing protrusion slides in the sealing ring cavity, and the sealing protrusion and the inner wall of the sealing ring cavity are connected by a spring. A control valve is installed in the sealing ring cavity. The amount of gas injected into the sealing ring cavity can be controlled by opening and closing the control valve, thereby controlling the moving distance of the sealing protrusion, driving the rotating shaft to rotate, and realizing precise adjustment of the cylinder rotation angle.

[0014] Furthermore, a U-shaped mounting bracket is also installed on the movable frame, and a linear drive component is provided inside the U-shaped mounting bracket. The clamping part is connected to the output end of the linear drive component. The linear drive component can drive the clamping part to move smoothly along the length direction of the movable frame, so as to achieve precise adjustment of the clamping position and ensure that the clamping part can accurately align with the force position of the photovoltaic panel during actual installation.

[0015] Furthermore, the movable frame is also equipped with a braking part, which is an abutment plate; the U-shaped mounting frame is connected to a cylinder, and under the action of the cylinder, the U-shaped mounting frame can move towards the abutment plate and push the abutment plate outward. The abutment plate drives the two horizontal ends of the movable frame to move relative to each other through a connecting rod, so as to achieve the contact between the front flange and the glass surface of the photovoltaic panel and the inner wall of the frame, or the contact between the rear flange and the outer wall of the photovoltaic panel frame; a return spring is provided between the abutment plate and the vertical end of the movable frame. After the test is completed, the return spring can drive the abutment plate to return to its original position, and then drive the horizontal end of the movable frame to return to its original position, so as to facilitate the next test or the removal of the photovoltaic panel.

[0016] This invention also discloses a method for testing photovoltaic modules, comprising the following steps: S1. Adhesive Stability Test: Place the photovoltaic panel on top of the vacuum adsorption stage, activate the vacuum suction cup to adsorb and fix the photovoltaic panel; activate the cylinder to drive the U-shaped mounting bracket to move towards the contact plate, push the contact plate outward, and drive the two horizontal ends of the moving bracket to move relative to each other, so that the front edge contacts the glass surface of the photovoltaic panel, and the outer wall of the front edge abuts against the inner wall of the photovoltaic panel frame; control the moving bracket to move outward in a direction perpendicular to the side of the photovoltaic panel, and control the outward force applied by the front edge to the photovoltaic panel frame by the outward movement distance of the moving bracket, and observe whether there is any delamination or detachment between the photovoltaic frame and the glass, thus completing the adhesive stability test; S2. Lateral compression resistance test: After the adhesive stability test is completed, the reset spring drives the contact plate to reset, which in turn drives the horizontal end of the moving frame to reset; the two horizontal ends of the moving frame are controlled to move relative to each other again, so that the rear flange abuts against the outer wall of the photovoltaic panel frame; the moving frame is controlled to move towards the photovoltaic panel, and the inward force applied by the rear flange to the photovoltaic panel frame is controlled by the inward movement distance of the moving frame. The photovoltaic frame is observed to see if there is any deformation, cracking, etc., to complete the lateral compression resistance test. S3, Photovoltaic panel clamping: The clamping part is driven by an electric push rod to move along the length of the moving frame, so that the clamping part is aligned with the connection point of the support frame and the frame when the photovoltaic panel is actually installed, and the clamping part clamps and fixes the frame of the photovoltaic panel. S4. Impact Resistance Test: After the lateral compression test is completed, the air injection volume into the sealing ring cavity is controlled by the control valve according to the test requirements, and the rotation angle of the cylinder is adjusted to match the required collision angle. The external air pump is started, and gas is injected into the cylinder through the air supply pipe and the external air pipe. When the gas pressure is greater than the spring force, the falling object moves downward and collides with the photovoltaic panel frame in a point contact manner. The operation of one or more cylinders can be controlled by the solenoid valve to simulate different numbers of external object collisions. The photovoltaic panel frame is observed to see if there are dents, cracks, or other issues, thus completing the impact resistance test. After the test is completed, the air circuit is closed, and the spring drives the falling object to reset. S5. Corner Resistance Test: Move two mutually perpendicular movable frames to the corner of the photovoltaic panel, so that the 45° angled faces of the two movable frames meet, and the two half-corners are spliced ​​together to form an L-shaped full corner, which fits against the corner of the photovoltaic panel frame; connect the external tensile tester to the lug on the full corner, and apply a force diagonally to the full corner through the tensile tester, observe whether cracks or deformations occur at the corner of the photovoltaic panel, and record the tensile force value when cracks or deformations occur at the corner of the photovoltaic panel. If the tensile force value is greater than the preset standard value, it means that the corner resistance of the photovoltaic panel meets the standard; otherwise, it does not meet the standard. S6: Inspection complete. After all inspection items are completed, close all inspection mechanisms, control the clamping part to release the photovoltaic panel frame, turn off the vacuum pump, remove the photovoltaic panel, and the inspection is complete; reset all inspection mechanisms to prepare for the next inspection.

[0017] The beneficial effects of this invention are: 1. Achieving multi-dimensional integrated testing: This device can complete four core testing items through the same equipment: stability of the photovoltaic frame and glass adhesive, lateral compressive strength of the frame, resistance to external object collision of the frame, and corner strength of the panel. It eliminates the need to replace multiple devices, simplifies the testing process, greatly improves testing efficiency, and reduces the investment cost of testing equipment, thus meeting the testing needs of large-scale photovoltaic module production.

[0018] 2. High Detection Accuracy: Firstly, the force applied is precisely controlled by the moving frame, ensuring uniform and controllable force application and avoiding detection errors caused by improper force application. Secondly, the clamping part is set up and its position can be adjusted so that the clamping part corresponds to the connection position of the support frame during the actual installation of the photovoltaic panel, simulating the gravity distribution after the photovoltaic panel is actually installed, making the collision resistance test more in line with the actual use scenario and improving the accuracy of the test results. Thirdly, the horizontal end of the moving frame is set with a 45° slope, and the half-corner can be precisely spliced ​​into a full-corner that fits the corner of the photovoltaic panel, ensuring uniform force application during corner resistance testing and making the test results more reliable. Fourthly, the vacuum adsorption stage, together with the pressure sensor, ensures stable fixation of the photovoltaic panel during the testing process, avoiding displacement that affects the detection accuracy.

[0019] 3. High adaptability: The number of movable frames in this device corresponds to the number of photovoltaic panels on the sides, and the horizontal ends of the movable frames can slide relative to or opposite to each other. The position of the half-angle part can be adjusted, and the impact force of the falling object simulation part can be controlled by adjusting the air intake pressure, making it highly versatile.

[0020] 4. Easy to operate and highly practical: The components of this device are easy to adjust, and the drive mechanism can be automatically controlled, reducing the intensity of manual operation; the falling object simulation part can be quickly reset by the elastic reset part, which is convenient for repeated testing; the overall structure is reasonably designed, the manufacturing cost is moderate, and it is easy to promote and apply. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a photovoltaic module testing device provided in an embodiment of the present invention; Figure 2 This is a structural diagram of the mobile frame; Figure 3 This is a front view structural diagram of the mobile frame; Figure 4 This is a schematic diagram of half of the mobile frame structure; Figure 5 This is a schematic diagram of the internal structure of the mobile frame; Figure 6 This is a structural diagram of the movable frame, clamping part, half-angle part, and U-shaped mounting frame; Figure 7 This is a schematic diagram showing the connection status of the various structures inside the mobile frame; Figure 8 This is a schematic diagram of the connection structure between the falling object simulation section and the cylindrical support.

[0023] In the figure: 1. Vacuum adsorption stage; 2. Moving frame; 20. Front flange; 21. Rear flange; 22. Falling object simulation section; 220. Cylinder support; 23. Clamping section; 24. Half-angle section; 25. U-shaped mounting frame; 26. Contact plate. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, 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.

[0025] This embodiment provides a photovoltaic module testing device, including a vacuum adsorption stage 1, a movable frame 2, a front flange 20, a rear flange 21, a falling object simulation part 22, a clamping part 23, and a half-angle part 24.

[0026] Reference Figure 1 The top of the vacuum adsorption stage 1 is equipped with a vacuum suction cup. The photovoltaic panel is placed on the top of the vacuum adsorption stage 1 and fixed by the vacuum suction cup to prevent the photovoltaic panel from shifting during the detection process and to ensure the stability of the detection.

[0027] Reference Figure 1 The top of the vacuum adsorption stage 1 is slidably connected to a movable frame 2 via a slide rail. The number of movable frames 2 is the same as the number of sides of the photovoltaic panel. In this embodiment, the photovoltaic panel is rectangular, so four movable frames 2 are provided, and each movable frame 2 moves in a direction perpendicular to the side of the corresponding photovoltaic panel.

[0028] In some embodiments, the movable frame 2 can be driven to slide along the slide rail by an external spring tension gauge or a linear drive. When a spring tension gauge is used, it is convenient to read the tension force driving the movable frame 2 to move. When a linear drive is used, it is convenient to move the movable frame 2, but the reading needs to be taken and recorded by electronic force measuring components such as pressure sensors. The linear drive is a conventional technical means in the prior art, such as a cylinder or push rod motor.

[0029] Reference Figure 2 and Figure 3 The movable frame 2 is preferably a U-shaped structure, with its two horizontal ends slidably connected to the vertical end via slide rails, and can slide relative to or away from each other along the vertical end; in some embodiments, the outer walls of the two horizontal ends of the movable frame 2 are provided with slide blocks, and correspondingly, the vertical end of the movable frame 2 is provided with a slide groove structure for sliding the slide blocks.

[0030] Furthermore, refer to Figure 5 and Figure 7 The horizontal end face of the movable frame 2 is vertically connected to a front flange 20 and a rear flange 21. The distance between the front flange 20 and the rear flange 21 is greater than the width of the photovoltaic panel frame. When the photovoltaic panel frame is located between the front flange 20 and the rear flange 21, with the unidirectional movement of the movable frame 2, the front flange 20 and the rear flange 21 act on one side of the photovoltaic panel frame, thereby detecting the delamination of the photovoltaic panel frame (the front flange 20 moves outward against the photovoltaic panel frame) or the lateral pressure (the rear flange 21 moves inward against the photovoltaic panel frame).

[0031] In some other embodiments, to accommodate different photovoltaic panel frame heights, the distance between the front flange 20 and the rear flange 21 relative to the horizontal end of the moving frame 2 can be linearly adjusted by components such as cylinders.

[0032] Reference Figure 5 and Figure 7 A falling object simulation section 22 is provided between the front flange 20 and the rear flange 21.

[0033] In some embodiments, the object simulation unit 22 includes multiple cylinders, a dropping object, an elastic reset member, and a cylinder support 220. The cylinder support 220 adopts a rectangular metal support structure and is fixed to the horizontal end of the movable frame 2 by bolts. Multiple cylinders are rotatably mounted on the cylinder support 220 via a rotating shaft. In this embodiment, the cylinders are evenly distributed on the cylinder support 220. The cylinders adopt a cylindrical metal cylinder structure and have an opening at the bottom to facilitate the dropping object to pass through.

[0034] When gas is injected into the cylinder, the gas pressure is greater than the elastic force of the elastic reset component, causing the falling object to move downward. As a result, the falling object applies a force to the photovoltaic panel frame in a point-contact manner, thus testing the photovoltaic panel frame's ability to withstand impacts from external objects (such as hail).

[0035] Furthermore, a dropper is slidably connected inside the cylinder. The outer wall of the dropper is made of hard rubber, while its ends and center are made of metal. Its diameter is matched with the inner diameter of the cylinder to prevent deviation during the fall. A spring (elastic reset component) is connected between the dropper and the top inner wall of the cylinder. One end of the spring is welded to the top of the dropper, and the other end is welded to the top inner wall of the cylinder. After the test is completed, the spring can drive the dropper to automatically reset to the inside of the cylinder.

[0036] In some embodiments, in the reset state, to facilitate the relative movement of the front flange 20 and the rear flange 21 relative to the photovoltaic panel frame, a steel ball is movably embedded in the end of the object. The steel ball and the top of the photovoltaic panel frame use rolling friction instead of sliding friction to reduce the friction between the top of the photovoltaic panel frame and the object. At the same time, the end of the object moves relative to the photovoltaic panel frame or the photovoltaic panel glass in a point contact manner to simulate the collision form of external objects such as hail.

[0037] In other embodiments, each cylinder is connected to an external air pipe, which is a high-pressure rubber hose. All external air pipes are connected to the same air supply pipe, which is connected to an external air pump. Each external air pipe is equipped with a solenoid valve. By controlling the opening and closing of the solenoid valve, independent air supply can be achieved for one or more cylinders, thereby controlling the falling of one or more objects and simulating the scenario of different numbers of external objects colliding with the photovoltaic panel frame at the same time.

[0038] Reference Figure 8 The outer wall of the rotating shaft is integrally formed with a sealing protrusion. The sealing protrusion adopts an annular metal protrusion structure, and its outer diameter is adapted to the inner diameter of the sealing ring cavity. A sealing ring cavity for the sliding of the sealing protrusion is opened on the cylinder support 220. The sealing ring cavity adopts an annular groove structure, wherein the angle of the sealing ring cavity is less than 360°, that is, the sealing ring cavity has two ends and a non-continuous 360° annular structure. The sealing protrusion slides in the sealing ring cavity, and a spring is connected between the sealing protrusion and the inner wall of the sealing ring cavity. The spring is sleeved on the outer wall of the rotating shaft. A control valve is installed in the sealing ring cavity. The control valve is connected to an external gas circuit. By opening and closing the control valve, the amount of gas injected into the sealing ring cavity can be controlled, thereby controlling the movement distance of the sealing protrusion, driving the rotating shaft to rotate, and realizing the precise adjustment of the cylinder rotation angle. The adjustment range is 0°-85°, which can simulate the collision scenario of external objects at different angles.

[0039] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7In some embodiments, the horizontal end of the movable frame 2 is machined into a 45° bevel, and its end is slidably connected to a half-corner 24 via a slide rail along the 45° bevel direction. The half-corner 24 adopts a metal block structure adapted to the corner of the photovoltaic panel frame. After two mutually perpendicular movable frames 2 are docked, the two half-corner 24 can be spliced ​​to form an L-shaped full-corner. The inner wall of the full-corner is tightly fitted to the corner of the photovoltaic panel frame. A hanging ear is welded on the full-corner. The hanging ear adopts a ring-shaped metal structure and is used to connect with an external tension gauge (tension component). The tension gauge applies a diagonal tension to the full-corner to detect the corner resistance of the photovoltaic panel.

[0040] It should be added that: in some implementation processes, the half-corner 24 can be driven by an existing electric linear drive structure such as an electric push rod, which facilitates the linear movement of the half-corner 24 and is easy to control. When the half-corner 24 moves outward to the end of the moving frame 2, it can easily fit tightly with the corner of the photovoltaic panel frame; conversely, when the corner 24 moves inward to the end of the moving frame 2, it can easily move the photovoltaic panel frame into the position between the front flange 20 and the rear flange 21, avoiding motion interference.

[0041] Reference Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 The movable frame 2 also has a U-shaped mounting bracket 25 that slides on it. An electric push rod (a linear drive component; in some other embodiments, in addition to the electric push rod, a screw or cylinder or other drive component can also be used as the driving force) is installed inside the U-shaped mounting bracket 25. The clamping part 23 is connected to the output end of the electric push rod. The clamping part 23 is driven to move along the length direction of the movable frame 2 by the electric push rod, and the clamping position of the clamping part 23 on the photovoltaic panel frame is adjusted to adapt to the connection position between the support frame and the frame when the photovoltaic panel is actually installed.

[0042] Reference Figure 4 , Figure 5 and Figure 6 Based on the structural arrangement of the U-shaped mounting bracket 25 and the movable bracket 2, in some embodiments, the movable bracket 2 is also provided with a contact plate 26. The U-shaped mounting bracket 25 is connected to a cylinder, and the output end of the cylinder is connected to the U-shaped mounting bracket 25. The cylinder drives the U-shaped mounting bracket 25 to move toward the contact plate 26 and pushes the contact plate 26 to move outward. The contact plate 26 is connected to the horizontal end (slide seat) of the movable bracket 2 through a connecting rod. In order to separate the slide seat from the vertical end of the movable bracket 2, the structure of the slide seat is preferably an H-shaped slide seat structure with an anti-slip structure. The outward movement of the contact plate 26 can drive the two horizontal ends of the movable bracket 2 to move relative to each other. A return spring is connected between the contact plate 26 and the vertical end of the movable bracket 2. After the test is completed, the return spring drives the contact plate 26 to reset, and then drives the horizontal end of the movable bracket 2 to reset.

[0043] The detection process in this embodiment is as follows: S1. Adhesive stability test: Place the photovoltaic panel on top of the vacuum adsorption stage 1, start the vacuum suction cup to adsorb and fix the photovoltaic panel; start the cylinder to drive the U-shaped mounting bracket 25 to move towards the contact plate 26, push the contact plate 26 outward, and drive the two horizontal ends of the moving frame 2 to move relative to each other, so that the front flange 20 contacts the glass surface of the photovoltaic panel, and the outer wall of the front flange 20 abuts against the inner wall of the photovoltaic panel frame; control the moving frame 2 to move outward in a direction perpendicular to the side of the photovoltaic panel, and control the outward force of the front flange 20 on the photovoltaic panel frame by the outward movement distance of the moving frame 2, and observe whether there is any glue separation or detachment between the photovoltaic frame and the glass, thus completing the adhesive stability test.

[0044] In some implementations, to facilitate reading the magnitude of the tension after the movable frame 2 moves, a pressure sensor is provided on the side of the front flange 20 opposite to the rear flange 21. The pressure sensor at this location is used to read and feed back the real-time force data of the front flange 20 to the controller.

[0045] S2. Lateral compression resistance test: After the adhesive stability test is completed, the reset spring drives the contact plate 26 to reset, which in turn drives the horizontal end of the moving frame 2 to reset; control the two horizontal ends of the moving frame 2 to move relative to each other again, so that the rear flange 21 abuts against the outer wall of the photovoltaic panel frame; control the moving frame 2 to move towards the photovoltaic panel, and control the magnitude of the inward force applied by the rear flange 21 to the photovoltaic panel frame by the inward movement distance of the moving frame 2, and observe whether the photovoltaic frame is deformed, cracked, etc., to complete the lateral compression resistance test.

[0046] In some implementations, to facilitate reading the magnitude of the tension after the movable frame 2 moves, a pressure sensor is also provided on the side of the rear flange 21 opposite to the front flange 20. The pressure sensor at this location reads and feeds back the real-time force data of the rear flange 21 to the controller.

[0047] S3, Photovoltaic panel clamping: The clamping part 23 is driven by an electric push rod to move along the length of the moving frame 2, so that the clamping part 23 is aligned with the connection point of the support frame and the frame when the photovoltaic panel is actually installed, and the clamping part 23 clamps and fixes the frame of the photovoltaic panel.

[0048] In some embodiments, the clamping part 23 consists of a sliding block and two clamping arms disposed on the sliding block. The two clamping arms are controlled by a double-ended screw to move relative to or away from each other. When the two clamping arms move relative to each other, they clamp the photovoltaic panel frame; conversely, when the two clamping arms move away from each other, the clamping effect on the photovoltaic panel frame is canceled.

[0049] S4. Impact Resistance Test: After the lateral compression test is completed, the air injection volume into the sealing ring cavity is controlled by the control valve according to the test requirements, and the rotation angle of the cylinder is adjusted to match the required collision angle. The external air pump is started, and gas is injected into the cylinder through the air supply pipe and the external air pipe. When the gas pressure is greater than the spring force, the falling object moves downward and collides with the photovoltaic panel frame in a point contact manner. The operation of one or more cylinders can be controlled by the solenoid valve to simulate different numbers of external object collisions. The photovoltaic panel frame is observed to see if there are dents, cracks, etc., to complete the impact resistance test. After the test is completed, the air circuit is closed, and the spring drives the falling object to reset.

[0050] S5. Corner Resistance Test: Move the two mutually perpendicular movable frames 2 to the corner of the photovoltaic panel, so that the 45° angled faces of the two movable frames 2 meet, and the two half-corner parts 24 are spliced ​​together to form an L-shaped full corner part, which fits against the corner of the photovoltaic panel frame; connect the external tensile tester to the hanging ear on the full corner part, and apply a force diagonally to the full corner part through the tensile tester, observe whether cracks or deformations occur at the corner of the photovoltaic panel, and record the tensile force value when cracks or deformations occur at the corner of the photovoltaic panel. If the tensile force value is greater than the preset standard value, it means that the corner resistance of the photovoltaic panel meets the standard; otherwise, it does not meet the standard.

[0051] S6: Inspection complete. After all inspection items are completed, close all inspection mechanisms, control clamping part 23 to release the photovoltaic panel frame, turn off the vacuum pump, remove the photovoltaic panel, and the inspection is complete; reset all inspection mechanisms to prepare for the next inspection.

[0052] Points to note during the above testing process: 1. Before testing, check the connection status of each testing mechanism to ensure that components such as vacuum suction cups, cylinders, electric push rods, and solenoid valves are working properly to avoid malfunctions during the testing process.

[0053] 2. When mounting the photovoltaic panel, ensure that the panel is placed flat and that the vacuum suction cup is firmly attached to it to prevent displacement of the panel during the testing process, which could affect the test results.

[0054] 3. During the testing process, the applied force and moving distance should be adjusted slowly to avoid applying excessive force at once, which could damage the photovoltaic modules.

[0055] 4. After the test is completed, all testing mechanisms should be reset in a timely manner and the testing table should be cleaned to avoid the accumulation of dust and debris, which may affect the service life and testing accuracy of the equipment.

[0056] 5. Regularly maintain and service the equipment, check the sealing performance of the seals, the elasticity of the springs, and the smoothness of the slide rails, and replace damaged parts in a timely manner to ensure long-term stable operation of the equipment.

[0057] It should be noted that the specific model and specifications of the motor need to be selected and determined based on the actual specifications of the device. The specific selection and calculation method adopts the existing technology in this field, so it will not be described in detail here.

[0058] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A photovoltaic module testing device, characterized in that, The device includes a vacuum adsorption platform with a vacuum suction cup on top. A movable frame slides on the top of the vacuum adsorption platform. The number of movable frames corresponds to the number of sides of the photovoltaic panel, and the movable frames move perpendicular to the sides of the photovoltaic panel. The mobile frame has a U-shaped structure, and its two horizontal ends slide relative to or away from each other along the vertical end of the mobile frame. The horizontal end face of the mobile frame is vertically provided with a front flange and a rear flange, and a falling object simulation part is provided between the front flange and the rear flange.

2. The photovoltaic module testing device according to claim 1, characterized in that, The falling object simulation unit consists of multiple cylinders, with a falling object sliding inside each cylinder. The falling object and the cylinder are connected by an elastic reset member. When gas is injected into the cylinder, the gas pressure is greater than the elastic force of the elastic reset member, causing the falling object to move downward and collide with the photovoltaic panel frame.

3. The photovoltaic module testing device according to claim 2, characterized in that, Multiple cylinders are rotatably mounted on the same cylinder support via a rotating shaft.

4. The photovoltaic module testing device according to claim 3, characterized in that, The cylinder and the external air pipe are connected and connected. The external air pipe is equipped with a solenoid valve and is connected to the same air supply pipe.

5. A photovoltaic module testing device according to claim 4, characterized in that, The outer wall of the rotating shaft is provided with a sealing protrusion, and the cylinder support is provided with a sealing ring cavity for the sliding of the sealing protrusion. The sealing protrusion slides in the sealing ring cavity and is connected by a spring. A control valve is installed in the sealing ring cavity. The amount of gas injected into the sealing ring cavity is controlled by opening and closing the control valve. The rotation angle of the cylinder is adjusted by adjusting the moving distance of the sealing protrusion.

6. The photovoltaic module testing device according to claim 5, characterized in that, The movable frame is also provided with at least two clamping parts, which move along the length of the movable frame.

7. A photovoltaic module testing device according to claim 6, characterized in that, The horizontal end of the movable frame is a 45° inclined plane, and the end of the movable frame has a half-angle portion that slides along the 45° inclined plane. After the two movable frames are perpendicularly connected, the two half-angle portions form an L-shaped full-angle portion, corresponding to the corner of the photovoltaic panel frame. The full-angle portion is equipped with a hanging ear for applying tension to the full-angle portion.

8. A photovoltaic module testing device according to claim 7, characterized in that, The movable frame is also equipped with a U-shaped mounting bracket, which uses a linear drive to move the clamping part along the length of the movable frame.

9. A photovoltaic module testing device according to claim 8, characterized in that, The movable frame is also equipped with a braking part, which is an abutment plate. The U-shaped mounting bracket moves toward the abutment plate under the action of the cylinder, causing the abutment plate to move outward. The horizontal end of the movable frame moves relative to the cylinder via a connecting rod. The abutment plate is reset under the action of a return spring, and the two ends of the return spring are respectively located on the abutment plate and the vertical end of the movable frame.

10. A method for testing photovoltaic modules, characterized in that, The photovoltaic module testing device according to claim 9 includes the following steps: S1. Adhesive Stability Test: Place the photovoltaic panel on top of the vacuum adsorption stage, activate the vacuum suction cup to adsorb and fix the photovoltaic panel; activate the cylinder to drive the U-shaped mounting bracket to move towards the contact plate, push the contact plate outward, and drive the two horizontal ends of the moving bracket to move relative to each other, so that the front edge contacts the glass surface of the photovoltaic panel, and the outer wall of the front edge abuts against the inner wall of the photovoltaic panel frame; control the moving bracket to move outward in a direction perpendicular to the side of the photovoltaic panel, and control the outward force applied by the front edge to the photovoltaic panel frame by the outward movement distance of the moving bracket, and observe whether there is any delamination or detachment between the photovoltaic frame and the glass, thus completing the adhesive stability test; S2. Lateral compression resistance test: After the adhesive stability test is completed, the reset spring drives the contact plate to reset, which in turn drives the horizontal end of the moving frame to reset; the two horizontal ends of the moving frame are controlled to move relative to each other again, so that the rear flange abuts against the outer wall of the photovoltaic panel frame; the moving frame is controlled to move towards the photovoltaic panel, and the inward force applied by the rear flange to the photovoltaic panel frame is controlled by the inward movement distance of the moving frame. The photovoltaic frame is observed to see if there is any deformation or cracking, thus completing the lateral compression resistance test. S3, Photovoltaic panel clamping: The clamping part is driven by an electric push rod to move along the length of the moving frame, so that the clamping part is aligned with the connection point of the support frame and the frame when the photovoltaic panel is actually installed, and the clamping part clamps and fixes the frame of the photovoltaic panel. S4. Impact Resistance Test: After the lateral compression test is completed, the air injection volume into the sealing ring cavity is controlled by the control valve according to the test requirements, and the rotation angle of the cylinder is adjusted to match the required collision angle. The external air pump is started, and gas is injected into the cylinder through the air supply pipe and the external air pipe. When the gas pressure is greater than the spring force, the falling object moves downward and collides with the photovoltaic panel frame in a point contact manner. The operation of one or more cylinders can be controlled by the solenoid valve to simulate different numbers of external object collisions. The photovoltaic panel frame is observed to see if there are dents, cracks, or other issues, thus completing the impact resistance test. After the test is completed, the air circuit is closed, and the spring drives the falling object to reset. S5. Corner Resistance Test: Move two mutually perpendicular movable frames to the corner of the photovoltaic panel, so that the 45° angled faces of the two movable frames meet, and the two half-corners are spliced ​​together to form an L-shaped full corner, which fits against the corner of the photovoltaic panel frame; connect the external tensile tester to the lug on the full corner, and apply a force diagonally to the full corner through the tensile tester, observe whether cracks or deformations occur at the corner of the photovoltaic panel, and record the tensile force value when cracks or deformations occur at the corner of the photovoltaic panel. If the tensile force value is greater than the preset standard value, it means that the corner resistance of the photovoltaic panel meets the standard; otherwise, it does not meet the standard. S6: Inspection complete. After all inspection items are completed, close all inspection mechanisms, control the clamping part to release the photovoltaic panel frame, turn off the vacuum pump, remove the photovoltaic panel, and the inspection is complete; reset all inspection mechanisms to prepare for the next inspection.

Images