Test facility and detection device for photovoltaic modules

Abstract

The application discloses a test mechanism and a detection device of a photovoltaic module, and relates to the fields of photovoltaic and detection.A test mechanism comprises a first driving assembly, a second driving assembly and a knob, the knob is used for moving a busbar fixed on a junction box; the first driving assembly is connected with the knob and is used for driving the knob to move in a first direction; the second driving assembly is connected with the first driving assembly and is used for driving the first driving assembly to move in the first direction.The application can at least solve the problems that the moving speed and the moving force of the knob cannot be controlled as required.

Description

Technical Field

[0001] This application belongs to the fields of photovoltaic and testing technologies, and specifically relates to a testing organization and a testing device for photovoltaic modules. Background Technology

[0002] Post-welding inspection equipment for photovoltaic module junction boxes is used to detect whether there are defects such as poor soldering or weak solder joints in the busbars. The current inspection method is to move the busbar longitudinally (i.e., in the extension direction or length direction) and then observe whether the busbar shifts.

[0003] During the testing process, the dial of the testing equipment needs to be moved to the same horizontal plane as the busbar, and a pushing force needs to be applied to the longitudinal end of the busbar. However, because the distance between the longitudinal end of the busbar and the inner wall of the junction box is small, about 2mm to 3mm, in order to prevent the dial from touching the busbar and causing damage, the thickness of the dial needs to be less than the distance between the longitudinal end of the busbar and the inner wall of the junction box. This results in a limitation on the pushing force output by the dial. At the same time, the busbar itself has a certain rigidity, which makes it impossible for the dial to effectively move the busbar, ultimately affecting the test results.

[0004] Furthermore, in practice, the busbar is bent and welded to the inner surface of the junction box after passing through the lead-out hole. However, the lead-out hole is relatively small in the longitudinal direction of the busbar, causing the bent part of the busbar to abut against the wall of the lead-out hole. When the dial is used to move the busbar longitudinally, it increases the turning resistance, resulting in a large error in the test results.

[0005] In addition, in the related technology, the dial is driven by a single power source during the process of turning the busbar, which makes it impossible to adjust the moving speed and turning force of the dial as needed. This results in an unstable output turning force, which causes the dial to come into contact with the busbar and damage it. Utility Model Content

[0006] The purpose of this application is to provide a testing mechanism and a testing device for photovoltaic modules, which can at least solve the problems that the speed of the dial movement and the force of the dialing action cannot be adjusted as needed.

[0007] To solve the above-mentioned technical problems, this application is implemented as follows: This application provides a testing mechanism, including: a first driving component, a second driving component, and a dial, wherein the dial is used to move a busbar fixed on a junction box; The first driving component is connected to the dial head and is used to drive the dial head to move along a first direction; The second driving component is connected to the first driving component and is used to drive the first driving component to move along the first direction.

[0008] This application also provides a testing device for photovoltaic modules, including the aforementioned testing mechanism.

[0009] In this embodiment, the first driving component and the second driving component work together to achieve two-stage driving of the dial head in the first direction. On the one hand, this can expand the movement range of the dial head and improve the applicability of the testing mechanism. On the other hand, it can efficiently adjust the movement speed and dialing force of the dial head according to actual needs. Furthermore, the movement accuracy of the dial head can be improved by controlling them separately. This allows the dial head to apply a more stable force to the edge of the busbar during the testing process, preventing the unstable force applied by the dial head to the busbar from causing contact with the busbar and resulting in damage to the busbar. Attached Figure Description

[0010] Figure 1 This is a first structural schematic diagram of the detection device and the junction box with the busbar fixed thereon disclosed in the embodiments of this application; Figure 2 This is a second structural schematic diagram of the detection device and the junction box with the busbar fixed thereon disclosed in the embodiments of this application; Figure 3 This is a third structural schematic diagram of the detection device and the junction box with the busbar fixed thereon disclosed in the embodiments of this application; Figure 4 This is a schematic diagram of the testing mechanism and the junction box with the busbar fixed thereon disclosed in the embodiments of this application; Figure 5 This is a schematic diagram of the structure of the testing mechanism disclosed in the embodiments of this application; Figure 6 This is a partial structural schematic diagram of the testing mechanism disclosed in the embodiments of this application; Figure 7 This is a schematic diagram of the first drive component, second drive component, dial head, and other structures disclosed in the embodiments of this application; Figure 8 This is a partial schematic diagram of the first driving component and the junction box with the busbar fixed thereon disclosed in the embodiments of this application; Figure 9 This is a schematic diagram of the structure of the dial disclosed in the embodiments of this application; Figure 10 This is a first structural schematic diagram of the substrate and clamping mechanism disclosed in an embodiment of this application; Figure 11 This is a schematic diagram of the second structure of the substrate and clamping mechanism disclosed in the embodiments of this application; Figure 12 This is a partial schematic diagram of the gripping mechanism at the gripper module disclosed in the embodiments of this application; Figure 13This is a schematic diagram of the structure of the fifth drive component, synchronization component, and gripper disclosed in the embodiments of this application; Figure 14 This is a schematic diagram of the structure of the photovoltaic module testing equipment disclosed in the embodiments of this application; Figure 15 This is a schematic diagram of the conveying mechanism and support mechanism disclosed in the embodiments of this application; Figure 16 This is a schematic diagram of the detection device and conveying mechanism disclosed in the embodiments of this application; Figure 17 This is a schematic diagram of the junction box with a fixed busbar disclosed in an embodiment of this application.

[0011] Explanation of reference numerals in the attached figures: 01-Detection device; 10-Testing organization; 11-First drive assembly; 111-First load-bearing component; 112-Cylinder; 113-First pressure sensing element; 114-Mounting base; 115-Second pressure sensing element; 116-Elastic element; 12-Second drive component; 13-Hook; 131-Abutting surface; 132-Protruding hook structure; 14-Second carrier; 15-Third drive assembly; 16-Slide; 17-Fourth drive assembly; 18-Connector; 20-Clamping mechanism; 21-Third load-bearing component; 22-Fifth drive component; 23-Synchronization component; 231-Gear; 232-First rack; 233-Second rack; 241 - First gripper; 242 - Second gripper; 25-Claw Pad; 26-Sixth drive assembly; 27-Seventh drive assembly; 28-Fourth load-bearing component; 30 - Imaging elements; 40-substrate; 02-Conveying device; 021-Conveying mechanism; 022-Supporting mechanism; 023-First positioning mechanism; 024-Second positioning mechanism; 03- Junction box; 04- Busbar; 05- Rack; 051- Slide rail. Detailed Implementation

[0012] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0013] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0014] The embodiments of this application will be described in detail below with reference to the accompanying drawings and specific examples and application scenarios.

[0015] refer to Figures 1 to 17 This application discloses a testing device 01, which can be applied to the testing of photovoltaic modules. It detects whether a busbar 04 fixed to a junction box 03 shifts under load, thereby determining whether the busbar 04 is securely welded to the junction box 03. This allows for the detection of issues such as incomplete soldering or weak welds on the busbar 04, ensuring the robustness and stability of the connection between the busbar 04 and the junction box 03. The disclosed testing device 01 includes a clamping mechanism 20, a testing mechanism 10, and an imaging element 30.

[0016] The clamping mechanism 20 is used to clamp the junction box 03 to limit its movement, ensuring its stability during testing and preventing it from moving arbitrarily and affecting testing accuracy. The clamping mechanism 20 has a clamping part for clamping and fixing the junction box 03.

[0017] Optionally, the clamping part can clamp and fix the two sides of the junction box 03 in the longitudinal direction (i.e., the extension direction or length direction) of the busbar 04. Alternatively, the clamping part can also clamp and fix the two sides of the junction box 03 in the transverse direction (i.e., the width direction, perpendicular to the longitudinal direction) of the busbar 04. In other embodiments, the clamping mechanism 20 can also clamp and fix the two sides of the junction box 03 in the thickness direction of the busbar 04. As long as the stability of the junction box 03 can be ensured, the specific clamping method is not limited.

[0018] The testing mechanism 10 is used to apply a force to the busbar 04. The testing mechanism 10 has a force-applying part that applies a force to the busbar 04 along a first direction, which is parallel to the transverse direction of the busbar 04. Based on this arrangement, the busbar 04 can be subjected to a transverse force, facilitating observation of whether the busbar 04 undergoes transverse displacement.

[0019] Optionally, the force-applying part can be positioned at the lateral edge of the busbar 04, close to its corner. This increases the distance between the force-applying position and the fixed positions of the busbar 04 and junction box 03, thereby reducing the force applied by the force-applying part while the busbar 04 is subjected to the same torque. This allows for a reduction in the size of the force-applying part, improving its applicability and reducing costs. Of course, the force-applying part can also be positioned at other locations along the lateral edge of the busbar 04; no specific limitation is made here.

[0020] The imaging element 30 is used to capture the position of the busbar 04 on the junction box 03 to determine whether the busbar 04 has shifted under the action of the force-applying part, thereby determining whether the busbar 04 has a poor solder joint, weak solder joint, or other issues.

[0021] Specifically, before the force-applying part applies force to the busbar 04, the position of the busbar 04 on the junction box 03 can be photographed by the imaging element 30 as a reference position; during the process of the force-applying part applying force to the busbar 04, the position of the busbar 04 on the junction box 03 can be photographed again by the imaging element 30 to determine whether the position of the busbar 04 on the junction box 03 has changed after the force-applying part applies force to the busbar 04, thereby determining whether there are problems such as poor soldering or weak solder joints in the busbar 04.

[0022] Optionally, the imaging element 30 can be a camera, or of course, other devices, without specific limitations here.

[0023] In addition, the imaging element 30 can also capture images of the position of the junction box 03 to determine whether the position of the junction box 03 is accurate.

[0024] Based on the above configuration, in this embodiment, the force-applying part applies force to the busbar 04 in the transverse direction. Since there is a sufficiently large distance between the edge of the busbar 04 and the inner wall of the junction box 03 housing in the transverse direction, the transverse distance is greater than the longitudinal distance. This allows the force-applying part of the testing mechanism 10 to move between the transverse edge of the busbar 04 and the inner wall of the junction box 03 housing, preventing the force-applying part from touching the busbar 04 and causing damage to the busbar 04. Furthermore, due to the sufficiently large distance, the thickness of the force-applying part can be increased, thereby making the output force of the force-applying part no longer limited. Even if the busbar 04 has a certain rigidity, it can be ensured that the force-applying part applies a sufficiently large force to the busbar 04, further ensuring that the busbar 04 can be moved.

[0025] In addition, since the force-applying part applies force to the busbar 04 in the lateral direction, even if the lead-out hole of the junction box 03 is small in the longitudinal direction, it will not obstruct the busbar 04 in the lateral direction. This effectively prevents the lead-out hole from obstructing the busbar 04 in the longitudinal direction and increasing the resistance to moving the busbar 04, which helps to reduce detection errors and improve detection accuracy.

[0026] refer to Figure 4 , Figure 5 and Figure 7 In some embodiments, the testing mechanism 10 may include a first driving component 11, a second driving component 12, and a dial 13 as a force-applying part. The dial 13 is used to move the busbar 04 fixed on the junction box 03. The first driving component 11 is connected to the dial 13 and is used to drive the dial 13 to move along a first direction. Thus, under the driving action of the first driving component 11, the dial 13 can squeeze the edge (e.g., the lateral edge) of the busbar 04, so as to lay the foundation for subsequent imaging of whether the busbar 04 has shifted.

[0027] Optionally, the first drive component 11 can be a linear module, such as a cylinder, hydraulic cylinder, electric cylinder, motor + lead screw + slider, etc. Of course, the linear module can also be other types, which are not specifically limited here.

[0028] The second drive assembly 12 is connected to the drive end of the first drive assembly 11 and is used to drive the first drive assembly 11 to move along a first direction. Based on this, under the driving action of the second drive assembly 12, the first drive assembly 11 and the dial head 13 can move synchronously along the first direction.

[0029] Optionally, the second drive component 12 can be a linear module, such as a cylinder, hydraulic cylinder, electric cylinder, motor + lead screw + slider, etc. Of course, the linear module can also be other types, which are not specifically limited here.

[0030] This embodiment employs the cooperative use of the first driving component 11 and the second driving component 12, enabling two-stage driving of the dial head 13 in the first direction. This increases the movement range of the dial head 13, improving the applicability of the testing mechanism 10. It also allows for efficient adjustment of the dial head 13's movement speed and turning force according to actual needs, and improves the movement accuracy of the dial head 13 through separate control. This ensures a more stable force is applied to the edge of the busbar 04 during testing, preventing unstable force application and potential contact with the busbar 04 that could damage it. Furthermore, the squeezing parameters of the dial head 13 on the busbar 04 can be adjusted according to testing requirements, thereby increasing testing flexibility.

[0031] Continue to refer to Figure 7 In some more specific embodiments, the first driving assembly 11 may include a cylinder 112 and a first pressure detection element 113. The cylinder 112 is connected to the driving end of the second driving assembly 12, and the first pressure detection element 113 is connected between the cylinder 112 and the dial head 13. Based on this, under the driving action of the second driving assembly 12, the cylinder 112, the first pressure detection element 113, and the dial head 13 can move along a first direction. Furthermore, the cylinder 112 can also apply a driving force to the dial head 13 through the first pressure detection element 113, so that the dial head 13 can squeeze the lateral edge of the manifold 04. Simultaneously, the first pressure detection element 113 can also detect the magnitude of the force exerted by the dial head 13 on the manifold 04 in real time, thereby facilitating the control of the force magnitude. It should be noted that the gas flow rate entering the cylinder 112 can be adjusted by a precision pressure regulating valve, thereby achieving precise control of the squeezing force applied to the manifold 04 by controlling the thrust of the cylinder 112.

[0032] Specifically, during the testing process, the first drive assembly 11 and the dial head 13 can be moved along the first direction by the second drive assembly 12. After reaching the preset position, the dial head 13 can be driven by the cylinder 112 via the first pressure detection element 113 to continue moving along the first direction, so that the dial head 13 squeezes the transverse edge of the manifold 04.

[0033] Based on the above settings, the two-stage drive can be achieved in the first direction through the cooperation of the second drive component 12 and the cylinder 112. This allows the dial 13 to apply a more stable force to the lateral edge of the busbar 04 during the detection process, preventing damage to the busbar 04 due to unstable output force.

[0034] Optionally, the first pressure detection element 113 can be electrically connected to a control valve that controls the movement of the cylinder 112, so as to adjust the opening of the control valve based on the detected pressure value, thereby controlling the movement of the cylinder 112. Of course, the first pressure detection element 113 can also be electrically connected to the second drive assembly 12. Exemplarily, the first pressure detection element 113 can be a pressure sensor; however, it can also be other components, which are not specifically limited here.

[0035] refer to Figure 7 and Figure 8 In some embodiments, the first drive assembly 11 may further include a first support member 111, a mounting base 114, and an elastic member 116. The mounting base 114 is connected to the first support member 111, and the dial 13 is disposed on the mounting base 114; additionally, the first pressure detection member 113 may also be connected to the first support member 111. Thus, under the driving action of the cylinder 112, the first pressure detection member 113, the first support member 111, the mounting base 114, and the dial 13 can move together along a first direction.

[0036] Considering that the busbar 04 may be damaged if the dial 13 touches it during movement, in this embodiment, the dial 13 can be slidably connected to the mounting base 114 in the second direction, and the elastic member 116 is elastically connected between the dial 13 and the mounting base 114. Based on this, when the dial 13 touches the busbar 04 during movement in the second direction, the dial 13 can move relative to the mounting base 114 in the second direction and press against the elastic member 116. The elastic member 116 can then act as a buffer to prevent hard contact between the dial 13 and the busbar 04, thus preventing damage to the busbar 04. On the other hand, in some cases, the bottom surface of the inner cavity of the junction box 03 may have inconsistent heights. The elastic member 116 ensures that the dial 13 can press against the bottom of the junction box 03 when moving in the second direction.

[0037] Optionally, the second direction can be perpendicular to the first direction. For example, the first direction can be left-right, and the second direction can be up-down. For example, the elastic element 116 can be a spring.

[0038] Additionally, the first drive assembly 11 may also include a second pressure detection element 115, which is disposed on the mounting base 114, and the detection end of the second pressure detection element 115 extends along the second direction and can contact the dial head 13. Thus, in the initial stage when the dial head 13 touches the busbar 04, the dial head 13 moves relative to the mounting base 114 along the second direction. In this case, the dial head 13 has not yet contacted the detection end of the second pressure detection element 115.

[0039] As the dial head 13 continues to move in the second direction, it comes into contact with the detection end of the second pressure detection element 115 and generates an interaction force, thereby the squeezing force of the dial head 13 on the busbar 04 in the second direction can be detected by the second pressure detection element 115.

[0040] It should be noted that the detection by the second pressure detection element 115 facilitates the adjustment of the squeezing force exerted by the dial head 13 on the busbar 04 in the second direction, preventing excessive squeezing force from damaging the busbar 04. Furthermore, the second pressure detection element 115 can be electrically connected to the fourth drive assembly 17, allowing control of the fourth drive assembly 17's movement based on the detection result of the second pressure detection element 115, thus preventing the dial head 13 from crushing the busbar 04.

[0041] Optionally, the second pressure sensing element 115 can be a pressure sensor.

[0042] refer to Figures 4 to 6 In some embodiments, the testing mechanism 10 may further include a second support member 14, a third drive component 15, and a slide 16. The slide 16 is slidably connected to the second support member 14 in a third direction, the second drive component 12 is disposed on the slide 16, and the third drive component 15 is disposed on the second support member 14 and connected to the slide 16, for driving the slide 16 to move in a third direction.

[0043] Optionally, the third direction can be perpendicular to the first direction, wherein the first direction can be the horizontal direction of the busbar 04, and the third direction can be the vertical direction of the busbar 04. For example, the first direction can be a left-right direction, and the third direction can be a front-back direction.

[0044] Based on the above settings, under the driving action of the third driving component 15, the slide 16 can carry the second driving component 12 to move along the third direction. At the same time, the second driving component 12 can synchronously carry the first driving component 11, and the first driving component 11 synchronously carries the dial head 13 to move along the third direction, thereby adjusting the position of the dial head 13 relative to the busbar 04 in the longitudinal direction.

[0045] Optionally, the slide 16 can be a skateboard, or other forms, which are not specifically limited here. Additionally, the second support member 14 can be a fixed bracket, or other forms, which are not specifically limited here.

[0046] Optionally, the third drive assembly 15 may include a motor, a timing pulley, a timing belt, a lead screw, and a slider. The motor is connected to the timing belt via the timing pulley, the timing belt is connected to the lead screw via the timing pulley, the lead screw is threadedly connected to the slider, and the slider is fixedly connected to the second support member 14. Of course, the third drive assembly 15 can also be in other forms, such as a pneumatic cylinder, a hydraulic cylinder, or an electric cylinder.

[0047] In some embodiments, the cylinder 112 and the first support member 111 can be slidably connected to the slide block 16 along the first direction. In this way, the slide block 16 can jointly support the cylinder 112 and the first support member 111, which helps to reduce the number of parts used, thereby reducing the volume and cost. In addition, it can also ensure that the two slide smoothly in the first direction.

[0048] In some more specific embodiments, the slide block 16 may be provided with a guide rail extending along the first direction. Correspondingly, the cylinder 112 may be provided with a slider, and the first support member 111 may be provided with a slider. In this way, the cylinder 112 and the first support member 111 may slide and cooperate with the guide rail through the slider, so as to improve the smoothness of the entire first drive assembly 11 sliding along the first direction.

[0049] refer to Figure 9 In some embodiments, at least one end of the dial 13 may have an abutment surface 131, through which the lateral edge of the manifold 04 can be pressed. Optionally, the abutment surface 131 may be a plane, such as... Figure 9 As shown in b, the plane abuts against the end face of the transverse edge of the busbar 04, exerting a squeezing effect on the end face to determine whether the busbar 04 has shifted; of course, the abutting surface 131 may also be provided with a protruding hook structure 132 protruding from the abutting surface 131, such as Figure 9 As shown in Figure a, the protruding hook structure 132 can hook onto the lateral edge of the busbar 04 to lift the busbar 04, giving the busbar 04 a tendency to move away from the junction box 03, so as to determine whether the busbar 04 has detached from the junction box 03.

[0050] Optionally, the two ends of the dial head 13 have the same structure and can be used to apply force to the busbar 04. On the one hand, it is not necessary to distinguish between the positive and negative sides when installing the dial head 13, thereby improving the installation efficiency of the dial head 13. On the other hand, when one end of the dial head 13 is worn, the other end can be replaced, thereby extending the service life of the dial head 13 and reducing costs.

[0051] Considering that the busbar 04 has a large extension length on the junction box 03 and is fixed to the junction box 03 by multiple welding points, in order to test the firmness of the welding points at both ends of the busbar 04, this embodiment of the application can use a detection device 01 to apply force to the lateral edge of the busbar 04 near both ends to determine whether the busbar 04 has shifted.

[0052] Optionally, the testing mechanism 10 may include two sets of testing modules, each set of testing modules may include a first driving component 11, a second driving component 12 and a dial 13; in addition, the dials 13 of the two sets of testing modules may be spaced apart along a first direction and offset upwards in a third direction.

[0053] Based on this, the dials 13 of the two sets of test modules can move towards each other in the first direction to squeeze the opposite edges of the busbar 04 in the lateral direction. At the same time, in the third direction (i.e., the longitudinal or extending direction of the busbar 04), the positions of the dials of the two sets of test modules applying force to the busbar 04 are spaced apart, so that the firmness of the solder joints near the two ends of the busbar 04 can be tested separately.

[0054] In some more specific embodiments, the dials of the two sets of test modules contact the corners of the transverse edge of the busbar 04, so as to increase the torque under the same squeezing force.

[0055] In some embodiments, each set of test modules may further include a second support member 14, and the test mechanism 10 may further include a connector 18, which connects the second support members 14 of the two sets of test modules. Based on this, the synchronous movement of the two sets of test modules can be ensured under the action of the connector 18.

[0056] Additionally, the testing mechanism 10 may also include a fourth drive assembly 17, which is connected to the connector 18 to drive the second carriers 14 of the two sets of testing modules to move along the second direction. Thus, under the driving action of the second carriers 14, the third drive assembly 15, the slide 16, the second drive assembly 12, the first drive assembly 11, and the dial 13 can move synchronously along the second direction to adjust the position of the dial 13 in the second direction. Optionally, the connector 18 may be a connecting plate.

[0057] To achieve clamping and fixing of the junction box 03, the clamping mechanism 20 may include a third carrier 21, a fifth drive assembly 22, a synchronization assembly 23, and a first jaw 241 and a second jaw 242, which respectively serve as clamping parts, such as... Figure 10 and Figure 11As shown. Among them, the synchronization component 23 is movably disposed on the third support member 21, and the first gripper 241 and the second gripper 242 are respectively connected to the synchronization component 23 so as to drive the first gripper 241 and the second gripper 242 to move synchronously through the synchronization component 23; the fifth drive component 22 is disposed on the third support member 21 and connected to the synchronization component 23 so as to drive the first gripper 241 and the second gripper 242 to move relatively closer or relatively farther away in a first direction through the synchronization component 23.

[0058] Based on the above settings, the driving force of the fifth drive component 22 can be distributed to the first gripper 241 and the second gripper 242 by the synchronization component 23, so that the first gripper 241 and the second gripper 242 move synchronously to move relatively closer or relatively farther away, so that the junction box 03 will not move when clamping the junction box 03, thus ensuring the positional accuracy of the junction box 03.

[0059] Optionally, the third support component 21 can be a support plate, support block, or other structure; the fifth drive component 22 can be a linear module, rotary module, or other structure; and the synchronization component 23 can be a linkage assembly, gear 231 rack assembly, or other structure.

[0060] In some embodiments, the third support member 21 may be provided with a track extending along a first direction. Correspondingly, the first gripper 241 and the second gripper 242 may each be provided with a slider, and each slider is slidably connected to the track. Based on this, under the cooperative action of the slider and the track, the relative opening and closing process of the first gripper 241 and the second gripper 242 can be made smoother, which can help improve the positional accuracy of the junction box 03.

[0061] refer to Figure 13 In some more specific embodiments, the synchronization component 23 may include a gear 231, a first rack 232, and a second rack 233. The gear 231 is rotatably connected to the third support member 21. The first rack 232 and the second rack 233 are slidably connected to the third support member 21 along a first direction and mesh with the gear 231. A first gripper 241 is connected to the second rack 233, and a second gripper 242 is connected to the first rack 232. The fifth drive component 22 is connected to one of the gear 231, the first rack 232, and the second rack 233.

[0062] Optionally, the first rack 232 and the second rack 233 may be spaced apart in the second direction, and their tooth structures are arranged opposite to each other. The gear 231 is located between the first rack 232 and the second rack 233, and meshes with the tooth structures of the first rack 232 and the second rack 233 respectively.

[0063] Based on the above configuration, under the driving action of the fifth drive component 22, the first rack 232 and the second rack 233 move in opposite directions in the first direction. At the same time, the gear 231 can rotate between the first rack 232 and the second rack 233. Thus, the second rack 233 and the first rack 232 can respectively drive the first pawl 241 and the second pawl 242 to move towards each other or away from each other.

[0064] Furthermore, the teeth of gear 231, first rack 232, and second rack 233 can all be helical teeth, that is, each has a helical tooth structure. In this way, gear 231 can switch between meshing and disengaging states with first rack 232 and second rack 233 at all times, without any meshing blind spots. This ensures the uniformity of the moving speed of first rack 232 and second rack 233, thereby improving the smoothness of operation of synchronization component 23.

[0065] It should be noted that the instantaneous speed of the straight tooth structure is variable. If the synchronization component 23 adopts a straight tooth structure, the speed may be uneven due to backlash, causing the first gripper 241 and the second gripper 242 to move unsteadily, which may easily lead to the displacement of the junction box 03.

[0066] refer to Figure 12 In some embodiments, the clamping surfaces of the first gripper 241 and the second gripper 242 may each be provided with gripper pads 25. When clamping the junction box 03, the gripper pads 25 contact the junction box 03, thereby alleviating the problem of the junction box 03 being damaged by clamping. Optionally, the gripper pads 25 may be made of flexible materials, such as plastic, silicone, etc., and of course, other materials may also be used.

[0067] refer to Figure 10 and Figure 11 In some embodiments, the clamping mechanism 20 may further include a sixth drive component 26, a seventh drive component 27, and a fourth support member 28. The sixth drive component 26 can output driving force in a first direction, and the seventh drive component 27 can output driving force in a second direction.

[0068] Alternatively, the drive end of the sixth drive component 26 can be connected to the third carrier component 21 to drive the third carrier component 21 to move along the first direction. This allows the fifth drive component 22, the synchronization component 23, the first gripper 241, and the second gripper 242 to move synchronously with the third carrier component 21, so as to adjust the position of the first gripper 241 and the second gripper 242 in the first direction and make the position of the first gripper 241 and the second gripper 242 in the first direction adapt to the position of the junction box 03 to be clamped.

[0069] The sixth drive assembly 26 is disposed on the fourth support member 28, and the drive end of the seventh drive assembly 27 is connected to the fourth support member 28 so as to drive the sixth drive assembly 26 to move along the second direction through the fourth support member 28. Based on this, under the driving action of the seventh drive assembly 27, the fifth drive assembly 22, the synchronization assembly 23, the first gripper 241 and the second gripper 242 can be driven to move synchronously along the second direction with the fourth support member 28 through the fourth support member 28, the sixth drive assembly 26 and the third support member 21, so as to adjust the position of the first gripper 241 and the second gripper 242 in the second direction so that the position of the first gripper 241 and the second gripper 242 in the second direction can be adapted to the position of the junction box 03 to be clamped.

[0070] Alternatively, the drive end of the seventh drive assembly 27 is connected to the third carrier 21 to drive the third carrier 21 to move along the second direction. This causes the fifth drive assembly 22, the synchronization assembly 23, the first gripper 241, and the second gripper 242 to move synchronously with the third carrier 21, so as to adjust the position of the first gripper 241 and the second gripper 242 in the second direction and make the position of the first gripper 241 and the second gripper 242 in the second direction adapt to the position of the junction box 03 to be clamped.

[0071] The seventh drive assembly 27 is disposed on the fourth support member 28, and the drive end of the sixth drive assembly 26 is connected to the fourth support member 28 so as to drive the sixth drive assembly 26 to move along the first direction through the fourth support member 28. Based on this, under the driving action of the sixth drive assembly 26, the fifth drive assembly 22, the synchronization assembly 23, the first gripper 241 and the second gripper 242 can be driven to move synchronously along the first direction with the fourth support member 28 through the fourth support member 28, the seventh drive assembly 27 and the third support member 21, so as to adjust the position of the first gripper 241 and the second gripper 242 in the first direction so that the position of the first gripper 241 and the second gripper 242 in the first direction can be adapted to the position of the junction box 03 to be clamped.

[0072] Optionally, both the sixth drive assembly 26 and the seventh drive assembly 27 can be driven by cylinders, hydraulic cylinders, electric cylinders, etc.

[0073] Based on the above settings, the first gripper 241 and the second gripper 242 can move in the first direction and the third direction respectively, thereby improving the flexibility of movement of the first gripper 241 and the second gripper 242.

[0074] To enable the testing mechanism 10 to move along the second direction, the test may further include a support substrate. The second support member 14 is slidably connected to one side of the support substrate along the second direction. Additionally, a fourth drive assembly 17 is disposed on one side of the support substrate and connected to the second support member 14, for driving the second support member 14 to move along the second direction. Based on this, under the driving action of the fourth drive assembly 17, the dial head can move along the second direction to adjust the relative position between the dial head 13 and the busbar 04 in the second direction, allowing the dial head 13 to move to the lateral edge of the busbar 04.

[0075] Optionally, the fourth drive assembly 17 may include a motor, a timing pulley, a timing belt, a lead screw, and a slider. The motor is connected to the timing belt via the timing pulley, the timing belt is connected to the lead screw via the timing pulley, the lead screw is threadedly connected to the slider, and the slider is fixedly connected to the second support member 14. Additionally, the second support member 14 may be slidably connected to the support base plate via a guide rail.

[0076] In addition to supporting the testing mechanism 10, the carrier substrate can also be used to support the clamping mechanism 20. In this case, the carrier substrate can be regarded as the substrate 40 of the testing device 01, such as... Figure 1 , Figure 2 , Figure 3 , Figure 10 and Figure 11 As shown.

[0077] In some embodiments, the fourth support member 28 of the clamping mechanism 20 can be slidably connected to the other side of the substrate 40 along the second direction, and the seventh driving component 27 is disposed on the other side of the substrate 40 and connected to the fourth support member 28, for driving the fourth support member 28 to move along the second direction on the substrate 40.

[0078] Since the clamping mechanism 20 and the testing mechanism 10 can be located on opposite sides of the substrate 40, the space on both sides of the substrate 40 can be fully utilized, and mutual interference between the clamping mechanism 20 and the testing mechanism 10 can be effectively prevented.

[0079] refer to Figure 1 In some embodiments, the imaging element 30 may be connected to the substrate 40 to ensure the installation stability of the imaging element 30.

[0080] Of course, in some other embodiments, the imaging element 30 may also be connected to the connector 18. In this way, the imaging element 30 can be moved along the second direction by the connector 18, so that the imaging element 30 can move closer to or further away from the junction box 03 where the busbar 04 is fixed.

[0081] It should be noted that the fourth drive assembly 17 can simultaneously provide driving force to the test mechanism 10 and the imaging element 30, so that the test mechanism 10 and the imaging element 30 can move synchronously in the second direction. In this way, the number of power mechanisms can be reduced, which helps to reduce the complexity of the device and manufacturing costs.

[0082] Based on the aforementioned testing device 01, this application embodiment also discloses a testing device for photovoltaic modules, such as... Figures 14 to 16 As shown, the photovoltaic module includes a junction box 03 with a busbar 04 fixed to it. The disclosed testing equipment includes a conveying device 02 and the aforementioned testing device 01. The conveying device 02 is located below the testing device 01 (i.e., the two are spaced apart in the second direction) and is used to convey the photovoltaic module with the junction box 03 installed to the testing station located below the testing device 01.

[0083] Based on the above setup, when a testing process is required, the photovoltaic module with the junction box 03 installed is transported to the testing station below the testing device 01 by the conveying device 02, so that the junction box 03 can be clamped by the clamping mechanism 20 of the testing device 01, the busbar 04 can be applied force by the testing mechanism 10, and the position of the busbar 04 can be photographed by the imaging element 30, so as to determine whether the busbar 04 has shifted.

[0084] refer to Figure 15 In some embodiments, the conveying device 02 may include a conveying mechanism 021 and a supporting mechanism 022. The conveying mechanism 021 is used to convey the photovoltaic module with the junction box 03 installed to the detection station along a third direction perpendicular to the first direction. Optionally, the conveying mechanism 021 may convey the photovoltaic module along a third direction; of course, it may also convey it along other directions, which are not specifically limited here.

[0085] For example, the conveying mechanism 021 may be a belt conveyor, a roller conveyor, etc.

[0086] In some embodiments, a conveying mechanism 021 can be used to convey the tooling carrying multiple junction boxes 03 of the photovoltaic modules in order to improve conveying efficiency.

[0087] Support mechanism 022 is located at the testing station and is used to support the photovoltaic modules. This improves the stability of the photovoltaic modules when subjected to forces.

[0088] Optionally, the support mechanism 022 can be raised and lowered by a cylinder.

[0089] Continue to refer to Figure 15In some embodiments, the conveying device 02 may further include a first positioning mechanism 023, which is disposed on the conveying mechanism 021 and located on the conveying path of the photovoltaic module along the third direction. Based on this, when the conveying mechanism 021 conveys the photovoltaic module along the third direction, when it reaches the designated position, the photovoltaic module touches the first positioning mechanism 023, thereby determining that the photovoltaic module has moved into place, which can improve the initial position accuracy of the photovoltaic module in the third direction.

[0090] The conveying device 02 may further include a second positioning mechanism 024, which is disposed on at least one side of the conveying mechanism 021 along the first direction. Based on this, when the conveying mechanism 021 conveys the photovoltaic module along the third direction, the second positioning mechanism 024 can limit at least one side of the photovoltaic module in the first direction, thereby ensuring the initial positional accuracy of the photovoltaic module in the first direction.

[0091] Optionally, both the first positioning mechanism 023 and the second positioning mechanism 024 can be structures such as positioning pins, positioning columns, and positioning shafts. Of course, they can also be in other forms, which are not specifically limited here.

[0092] Furthermore, the positioning end of the first positioning mechanism 023 can move along a third direction to adjust the initial positioning position in the third direction; similarly, the positioning end of the second positioning mechanism 024 can move along a first direction to adjust the initial positioning position in the first direction. Based on this, photovoltaic modules can be transported under different operating conditions, thereby improving the applicability of the positioning mechanism.

[0093] refer to Figure 14 In some embodiments, the testing equipment may further include a frame 05, which may be in the form of a rectangular frame or the like. The testing device 01 may be mounted on the frame 05 to ensure its stability.

[0094] Optionally, the frame 05 may be provided with a slide rail 051 extending in the first direction, and the detection device 01 may be connected to the slide rail 051 to facilitate adjustment of the position of the entire detection device 01 in the first direction.

[0095] Based on the aforementioned detection device 01, this application embodiment also discloses a detection method applied to the aforementioned detection device 01. The disclosed detection method includes: The junction box 03 is photographed using the imaging element 30 to determine whether the junction box 03 is offset. The junction box 03 is clamped by the clamping mechanism 20, and the busbar 04 fixed to the junction box 03 is photographed for the first time by the imaging element 30 to determine the position of the busbar 04. The test mechanism 10 applies a force to the busbar 04 along the first direction; The imaging element 30 is used to take a second picture of the busbar 04, so as to determine whether the busbar 04 has been displaced based on the results of the first and second pictures.

[0096] Based on the above steps, a force can be applied to the busbar 04 in the horizontal direction, thereby overcoming the problems caused by applying a force to the busbar 04 in the vertical direction. Furthermore, the detection error can be reduced and the detection accuracy of the busbar 04 can be improved by the action of the imaging element 30.

[0097] In this embodiment of the application, the specific steps for detecting whether the busbar 04 has a poor weld or an unstable weld point are as follows: The tooling carrying the photovoltaic module with the junction box 03 installed is transported to the testing station below the testing device 01 by the conveying mechanism 021; The junction box 03 is positioned by the first positioning mechanism 023 and the second positioning mechanism 024 respectively; The tooling is supported by support mechanism 022 to prevent it from denting. The camera element 30 is used to take pictures of the junction box 03 with the busbar 04 fixed thereon to determine whether the position of the junction box 03 is offset. If it is offset, the position of the junction box 03 is adjusted. The clamping mechanism 20 descends and clamps the junction box 03 to ensure that the junction box 03 remains fixed. The first image of the busbar 04 is taken using the imaging element 30 to determine the initial position of the busbar 04; The two sets of testing mechanisms 10 descend and move their respective dials 13 to the two horizontal edges of the busbar 04, close to the two vertical ends of the busbar 04. The dials 13 of the two sets of testing mechanisms 10 squeeze the two opposite corners of the busbar 04 to conduct the first test. The first position is obtained by taking a second picture of the busbar 04 using the imaging element 30. The first position is compared with the initial position to determine whether the busbar 04 has shifted. If it has shifted, the tooling and the photovoltaic module it carries are transported to the NG station. If the busbar 04 did not shift in the previous step, the position of the dial 13 of each of the two sets of test mechanisms 10 is changed so that the dial 13 moves along the longitudinal direction of the busbar 04 to the other end, and the dial 13 of the two sets of test mechanisms 10 press the other two opposite corners on both sides of the busbar 04 to perform a second test. The busbar 04 is photographed for the third time using the imaging element 30 to obtain the second position. The second position is compared with the initial position to determine whether the busbar 04 has shifted. If it has shifted, the tooling and the junction box 03 on which the busbar 04 is fixed are transported to the NG station. If the busbar 04 did not shift in the previous step, the clamping mechanism 20 will release the junction box 03 and reset, the testing mechanism 10 will reset, the support mechanism 022 will reset, and so on, thus completing the entire testing process.

[0098] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A testing mechanism, characterized in that, include: The first drive assembly (11), the second drive assembly (12), and the dial (13) are used to move the busbar (04) fixed on the junction box (03). The first drive component (11) is connected to the dial head (13) and is used to drive the dial head (13) to move along a first direction; The second drive component (12) is connected to the first drive component (11) and is used to drive the first drive component (11) to move along the first direction.

2. The testing mechanism according to claim 1, characterized in that, The first drive assembly (11) includes a cylinder (112) and a first pressure sensing element (113). The cylinder (112) is connected to the drive end of the second drive assembly (12); The first pressure detection element (113) is connected between the cylinder (112) and the dial (13).

3. The testing mechanism according to claim 2, characterized in that, The first drive assembly (11) further includes a first carrier (111), a mounting base (114), and an elastic element (116). The mounting base (114) and the first pressure detection element (113) are respectively connected to the first bearing element (111). The dial (13) is slidably connected to the mounting base (114) along a second direction perpendicular to the first direction. The elastic element (116) elastically connects the dial (13) and the mounting base (114).

4. The testing mechanism according to claim 3, characterized in that, The first drive assembly (11) also includes a second pressure sensing element (115); The second pressure detection element (115) is disposed on the mounting base (114), and the detection end of the second pressure detection element (115) extends along the second direction and can contact the dial (13).

5. The testing mechanism according to claim 3, characterized in that, The test mechanism (10) also includes a second support member (14), a third drive assembly (15), and a slide (16). The slide block (16) is slidably connected to the second support member (14) along a third direction perpendicular to the first direction. The cylinder (112) and the first support member (111) are slidably connected to the slide block (16) along the first direction. The second drive assembly (12) is disposed on the slide block (16). The third drive component (15) is disposed on the second support member (14) and connected to the slide (16) for driving the slide (16) to move along the third direction.

6. The testing mechanism according to any one of claims 1 to 5, characterized in that, The testing mechanism (10) includes two sets of testing modules, each set of testing modules including the first driving component (11), the second driving component (12) and the dial (13). The dials (13) of the two sets of test modules are spaced apart along the first direction and offset upwards at a third direction perpendicular to the first direction.

7. The testing mechanism according to claim 6, characterized in that, Each set of test modules also includes a second carrier (14); The test mechanism (10) also includes a connector (18) that connects the second carrier (14) of the two sets of test modules.

8. The testing mechanism according to claim 7, characterized in that, The test mechanism (10) also includes a fourth drive component (17). The fourth drive component (17) is connected to the connector (18) to drive the second carrier (14) of the two sets of test modules to move in a second direction perpendicular to the first direction via the connector (18).

9. The testing mechanism according to any one of claims 1 to 4, characterized in that, At least one end of the dial (13) has an abutment surface (131) for contacting the busbar (04). The contact surface (131) is a plane, or the contact surface (131) is provided with a protruding hook structure (132) protruding from the contact surface (131).

10. A testing device for photovoltaic modules, characterized in that, Includes the testing apparatus described in any one of claims 1 to 9.

Images