Photovoltaic module EL test and repair equipment

Abstract

The utility model discloses photovoltaic module EL test and repair equipment, which belongs to the technical field of photovoltaic module production and comprises a conveying mechanism, a supporting platform module, a detection mechanism and a repair mechanism. A conveying mechanism is arranged to convey the whole photovoltaic module, and meanwhile the photovoltaic module is placed on a supporting platform through lifting of the conveying mechanism and descends to avoid the visual field of an EL detection camera; the hollow support platform module is arranged to support the glass substrate and expose the battery string in the visual field of the EL detection camera below, so that the detection mechanism is used for detecting and positioning whether the whole photovoltaic module has pseudo soldering or not and the pseudo soldering position, multiple times of movement and positioning are avoided, and the detection efficiency is improved. And after detection and identification are completed, automatic laser welding is conducted immediately through the repairing mechanism to repair pseudo soldering, the repairing quality is detected and confirmed again, repairing and detection are combined, and the pseudo soldering repairing efficiency and the welding effect are effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic component production, and specifically relates to photovoltaic component EL testing and repair equipment. Background Art

[0002] At present, when photovoltaic modules are undergoing EL inspection and repair, the modules need to be transferred to the corresponding workstation, and photos are taken under the modules while the power is on to complete the EL inspection and imaging of the modules. At present, a horizontal conveyor belt is generally set up in the repair equipment to transfer the modules to different horizontal positions, and the power-on photos are completed in batches, so as to complete the EL inspection and imaging of the entire panel of modules. The inspection process is cumbersome and the inspection efficiency is low; after that, the virtual solder joints are identified by EL recognition software, and the specific positions are manually confirmed before manual welding and repair. The welding accuracy and welding efficiency need to be improved. After the repair is completed, the entire panel of modules will be returned to the EL inspection station through the conveyor line to take three power-on photos to confirm whether the repair is qualified. After confirmation, it will be transmitted to the downstream. This process requires multiple reciprocating transmissions and mobile positioning of photovoltaic modules, and the repair efficiency is low. Utility Model Content

[0003] In response to one or more of the above defects or improvement needs of the prior art, the utility model provides a photovoltaic module EL testing and repair equipment, which can realize a single power-on photo inspection of the entire panel of photovoltaic modules to improve the EL inspection efficiency of the equipment and avoid multiple movements and positioning.

[0004] To achieve the above-mentioned purpose, the utility model provides a photovoltaic module EL testing and repair equipment, which includes a conveying mechanism, a supporting platform module, a detection mechanism, and a repair mechanism;

[0005] The conveying mechanism assembly line includes a lifting power assembly and a conveying assembly line assembly; the lifting power assembly is arranged on a frame, and the conveying assembly line assembly is arranged on the lifting power assembly and extends along the X-axis or Y-axis direction, and is used for conveying photovoltaic components along the X-axis direction or the Y-axis direction;

[0006] The support platform module is arranged on the frame and at least comprises a support platform; the support platform is hollowed out, and the conveying assembly line assembly places the photovoltaic assembly on the support platform through a lifting power assembly;

[0007] The detection mechanism includes a bonding electrode and an EL detection camera. The bonding electrode is arranged on the gantry assembly above the support platform to energize the photovoltaic assembly; the EL detection camera is arranged below the support platform to perform EL detection on the photovoltaic assembly from the hollow part of the support platform;

[0008] The repair mechanism includes a laser welding module, which is arranged above the supporting platform and on the gantry assembly, so as to move to the cold welding position in the XY direction under the drive of the gantry assembly to weld the cold welding point.

[0009] As a further improvement of the present utility model, the support platform includes a first support assembly, a second support assembly and a third support assembly;

[0010] The first support assembly is arranged on both sides of the conveying assembly along the conveying direction, and includes a long support frame and a plurality of receiving parts, wherein the long support frame is arranged on the frame and extends along the X-axis direction; the plurality of receiving parts are arranged at intervals on the top of the long support frame along the X-axis direction;

[0011] The second support assembly is arranged at both ends of the conveying assembly along the conveying direction, and two short support frames extending along the Y-axis direction are arranged at intervals at each end, one end of the short support frame is fixedly connected to the frame, and the other end is suspended, and a plurality of short receiving parts are arranged at intervals along the Y-axis direction on the top of the short support frame;

[0012] The third support assembly includes an intermediate support frame, which is arranged between the two long support frames and extends along the Y-axis direction, and the two ends of the intermediate support frame along the Y-axis direction are respectively vertically connected to the middle of the two long support frames along the X-axis direction, corresponding to the position of the middle bus bar of the photovoltaic assembly.

[0013] As a further improvement of the present invention, the receiving portion and the short receiving portion are both flexible.

[0014] As a further improvement of the utility model, the conveying line assembly includes a belt conveyor line and a driving module, and the belt conveyor line can be driven along the X-axis direction under the drive of the driving module;

[0015] The belt conveyor lines are arranged in parallel with each other, and two synchronous belts are arranged in each belt conveyor line along the X-axis direction. The synchronous belts extend along the X-axis direction, and the intermediate support frame is arranged between the two synchronous belts to avoid the intermediate support frame when the belt conveyor line rises.

[0016] As a further improvement of the present invention, the EL detection camera includes multiple ones, and the multiple EL detection cameras are arranged at intervals in different areas below the supporting platform. The conveying assembly line assembly can be lowered to avoid the photographing field of the EL detection camera to avoid obstruction of the EL detection camera when taking pictures of the photovoltaic assembly from below.

[0017] As a further improvement of the present invention, at least three rows of the EL detection cameras are spaced apart along the Y-axis direction below the support platform, and at least four groups of the EL detection cameras are spaced apart in each row along the X-axis direction.

[0018] As a further improvement of the utility model, coarse positioning components are respectively arranged on both sides of the support platform along the X-axis direction, and the coarse positioning components include a coarse positioning motion axis and a camera coarse positioning module;

[0019] The coarse positioning motion axis extends along the X-axis direction, and the camera coarse positioning module is arranged on the coarse positioning motion axis to drive the coarse positioning camera to move along the X-axis direction through the coarse positioning motion axis.

[0020] As a further improvement of the present invention, the gantry assembly comprises a gantry, an X-axis moving module and a Y-axis moving module;

[0021] The X-axis movable modules are provided in two numbers and are arranged on both sides of the support platform along the X-axis direction; the gantry extends along the Y-axis direction and spans over the support platform, and its two ends along the Y-axis direction are respectively fixed on the two X-axis movable modules; the Y-axis movable module is arranged on the gantry and extends along the Y-axis direction.

[0022] As a further improvement of the present invention, the laser welding module is connected and arranged on the Y-axis moving module, and the bonding electrode is connected and arranged on the bottom of the gantry.

[0023] As a further improvement of the utility model, it also includes at least one group of centering and aligning cylinder assemblies, each group of centering and aligning cylinder assemblies includes two slide cylinders with different cylinder diameters, and the two slide cylinders are respectively arranged on both sides of the support platform along the X-axis direction to perform centering and aligning of the left and right positions of the glass substrate on the support platform;

[0024] and / or,

[0025] It also includes at least one group of blocking and aligning cylinders, and two blocking and aligning cylinders in each group of blocking and aligning cylinders are respectively arranged at both ends of the conveying line assembly along the conveying direction to center and align the front and rear positions of the glass substrate on the conveying line assembly.

[0026] The above-mentioned improved technical features can be combined with each other as long as they do not conflict with each other.

[0027] In general, compared with the prior art, the above technical solutions conceived by the utility model have the following beneficial effects:

[0028] (1) The photovoltaic module EL testing and repair equipment of the utility model is provided with a conveying mechanism to transport the whole panel of photovoltaic modules, and at the same time, the photovoltaic modules are placed on the support platform by lifting and lowering the conveying mechanism, and then lowered to avoid the field of view of the EL detection camera; a hollow support platform module is provided to support the glass substrate while exposing the battery cells to the field of view of the EL detection camera below, and then the detection mechanism is used to detect and locate whether there is a cold solder joint and the specific position of the cold solder joint in the battery string of the whole panel of photovoltaic modules, thereby avoiding multiple movements and positioning, and after the detection and identification is completed, the repair mechanism immediately performs automatic laser welding repair, and the repair quality is re-detected to confirm, thereby effectively improving the repair efficiency and welding effect of the cold solder joint.

[0029] (2) The photovoltaic module EL testing and repair equipment of the present invention, through the coordinated arrangement of the centering and positioning aligning cylinder assembly and the blocking aligning cylinder, ensures that the front, back, left, and right sides of the glass substrate fed each time are in the center position, thereby maintaining the consistency of the incoming material position.

[0030] (3) The photovoltaic module EL testing and repair equipment of the utility model has a reasonable structural design and can transfer a whole panel of photovoltaic modules to the machine to realize automated online production docking. Moreover, the whole panel of photovoltaic modules only needs to be powered on and photographed once to complete the whole panel EL testing, which improves the EL testing efficiency and has good application prospects and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 It is a schematic diagram of the overall structure of the photovoltaic module EL testing and repair equipment in the embodiment of the utility model;

[0033] Figure 2 It is a structural schematic diagram of the conveying mechanism and the supporting platform module in the embodiment of the utility model;

[0034] Figure 3 It is a structural schematic diagram of a conveying line assembly in an embodiment of the utility model;

[0035] Figure 4 It is a schematic diagram of the overall structure of the support platform in the embodiment of the utility model;

[0036] Figure 5 yes Figure 3 Enlarged view of point A in the middle;

[0037] Figure 6 yes Figure 3 Enlarged view of point B;

[0038] Figure 7 It is a structural schematic diagram of the gantry assembly and the repair mechanism in the embodiment of the utility model;

[0039] Figure 8 It is a schematic diagram of the structure and distribution of the EL detection camera in the embodiment of the utility model;

[0040] Fig. 9 It is a structural schematic diagram of a coarse positioning assembly in an embodiment of the utility model;

[0041] In all the drawings, the same reference numerals represent the same technical features, specifically:

[0042] 1. Conveying mechanism; 11. Conveying line assembly; 111. Belt conveyor line; 12. Blocking and aligning cylinder; 13. Lifting power assembly; 2. Support platform module; 21. First support assembly; 211. Long support frame; 212. Receiving part; 22. Second support assembly; 221. Short support frame; 222. Short receiving part; 23. Intermediate support frame; 24. Centering and aligning cylinder assembly; 3. Detection mechanism; 31. EL detection camera; 32. Coarse positioning assembly; 321. Coarse positioning motion axis; 322. Camera coarse positioning module; 33. Bridge electrode; 4. Rework mechanism; 41. Laser welding module; 5. Gantry assembly; 51. Gantry; 52. X-axis moving module; 53. Y-axis moving module; 6. Photovoltaic module; 7. Rack. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0044] In the description of the present invention, it should be understood that, unless otherwise specified, terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0045] In addition, unless otherwise specified, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically specified.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] Example:

[0049] See also Figures 1 to 9The photovoltaic module EL testing and repair equipment in the preferred embodiment of the utility model includes a conveying mechanism 1, a supporting platform module 2, a detection mechanism 3 and a repair mechanism 4, so that the photovoltaic module 6 to be tested is conveyed to the supporting platform module 2 by the conveying mechanism 1, and the photovoltaic module 6 is subjected to EL detection by the detection mechanism 3. After the cold solder joint position is detected and located, the cold solder joint position is repaired and welded by the repair mechanism 4.

[0050] It is understandable that the photovoltaic module 6 in the embodiment of the utility model includes a glass substrate, a heat-sealing film such as EVA or POE film, etc., arranged on the glass substrate, and cells, welding strips, bus bars, etc. arranged in the whole page. It is known to those skilled in the art that the arrangement of cells, welding strips and bus bars can be determined according to the module layout. For a back-contact solar cell, taking a 72-cell layout as an example, 72 cells are arranged in rows and columns on a glass substrate (which may also include a heat-sealing film), and the tops of two adjacent cells are connected by welding strips, and the required number of welding strips are arranged on the cells, and one or more bus bars extend along the width direction of the photovoltaic module 6 to connect the welding strips.

[0051] Specifically, if Figure 2 and Figure 3 As shown in the figure, the conveying mechanism 1 in the preferred embodiment includes a conveying line component 11 and a lifting power component 13; wherein, the conveying line component 11 includes a belt conveyor line 111 and a driving module, the belt conveyor line 111 includes a plurality of synchronous belts extending along the X-axis direction, the driving module includes a speed regulating motor, a synchronous wheel, etc., so as to drive the synchronous wheel to rotate through the speed regulating motor, and drive the synchronous belt to rotate through the synchronous wheel, so that the belt conveyor line 111 can be driven along the X-axis direction by the driving module, and then the photovoltaic component 6 is loaded through the belt conveyor line 111 and the photovoltaic component 6 is transmitted along the X-axis direction.

[0052] like Figure 3 In the preferred embodiment shown, the conveying line assembly 11 includes two parallel belt conveyor lines 111, and two synchronous belts are arranged in each belt conveyor line 111 at intervals along the X direction. The synchronous belts extend along the X-axis direction, and the positions of the four synchronous belts are staggered in the horizontal direction with the detection field of view of the EL detection camera 31 in the detection mechanism 3 and the position of the support platform module 2.

[0053] Correspondingly, the lifting power assembly 13 is arranged on the frame 7, and the conveying assembly line assembly 11 is arranged on the lifting power assembly 13, so that the lifting power assembly 13 drives the conveying assembly line assembly 11 to move up and down, so that the photovoltaic assembly 6 can be placed on the supporting platform by lifting and lowering the conveying assembly line assembly 11.

[0054] Specifically, the lifting power assembly 13 includes a servo motor and a synchronous lifter reducer used in conjunction with the servo motor. In actual operation, the conveying assembly 11 rises and docks with the height of the upstream and downstream photovoltaic assemblies 6 to load and unload the photovoltaic assemblies 6; accordingly, the photovoltaic assemblies 6 are placed on the supporting platform module 2 by the descent of the conveying assembly 11, and continue to descend to the avoidance height during the inspection of the EL inspection camera 31 to avoid the field of view of the EL inspection camera 31, leaving a field of view space for the inspection of the entire photovoltaic assembly 6.

[0055] Preferably, the conveying mechanism 1 also includes at least one group of blocking and aligning cylinders 12, and the two blocking and aligning cylinders 12 in each group are respectively arranged at the two ends of the conveying line component 11 along the conveying direction. The blocking and aligning cylinders 12 are rotating clamping cylinders and are respectively located at the front and rear positions of the photovoltaic component 6 to center the front and rear positions of the photovoltaic component 6 on the conveying line component 11 to ensure the consistency of the front and rear positions of the photovoltaic component 6 after each loading.

[0056] Furthermore, if Figure 2 and Figure 4 As shown in , the support platform module 2 in the preferred embodiment is arranged on the frame 7, and at least includes a support platform, and the support platform is hollowed out to expose the photovoltaic assembly 6 from below.

[0057] Specifically, the support platform includes a first support assembly 21 , a second support assembly 22 and a third support assembly, so that the photovoltaic assembly 6 can be supported by the support platform module 2 when the photovoltaic assembly 6 is inspected and re-welded.

[0058] 4. The first support assembly 21 is arranged on both sides of the conveying assembly 11 along the conveying direction, and includes a long support frame 211 and a plurality of receiving portions 212. The long support frame 211 is arranged on the frame 7 and extends along the X-axis direction. The plurality of receiving portions 212 are spaced at the top of the long support frame 211 along the X-axis direction. Figure 5 As shown in the figure, the long side of the photovoltaic module 6 is supported by the receiving portion 212. The second support assembly 22 is arranged at both ends of the conveying assembly 11 along the conveying direction, and two short support frames 221 extending along the Y-axis direction are arranged at each end. One end of the short support frame 221 is fixedly connected to the frame 7, and the other end is suspended. At the same time, a plurality of short receiving portions 222 are arranged at intervals along the Y-axis direction on the top of each short support frame 221. Figure 6As shown in the figure, the short side of the photovoltaic assembly 6 is supported by the short receiving portion 222. The third supporting assembly includes an intermediate support frame 23, which is arranged between the two long support frames 211 and extends along the Y-axis direction, and its two ends are respectively vertically connected to the middle of the long support frames 211 on both sides along the X-axis direction, corresponding to the position of the middle bus bar of the photovoltaic assembly 6, and is also arranged between the intervals of two synchronous belts arranged at intervals along the X-axis direction in the belt conveyor line 111, so as to support the middle position of the photovoltaic assembly 6 through the intermediate support frame 23, and when the belt conveyor line 111 rises, the intermediate support frame 23 avoids at the interval of the synchronous belt. Among them, the receiving portion 212 and the short receiving portion 222 are both flexible materials such as rubber to avoid collision and scratching of the glass of the photovoltaic assembly 6.

[0059] It is understandable that the solar cells and welding strips are generally not arranged around the glass substrate of the photovoltaic module 6, which is the packaging position. There are no solar cells in the middle position, which is mostly the location of the bus bars. Therefore, when the photovoltaic module 6 is supported by the support platform module 2, the support structure is only set around and in the middle of the photovoltaic module 6. This can not only achieve good support for the photovoltaic module 6, but also expose the field of view where the solar cells are located, providing the EL detection camera 31 with a complete photographing field of view, so that the photographing detection can be completed at one time.

[0060] Preferably, at least one group of centering and alignment cylinder assemblies 24 is also provided on the support platform module 2, and each group of centering and alignment cylinder assemblies 24 includes two slide cylinders with different cylinder diameters, and the two slide cylinders are respectively arranged on both sides of the support platform along the X-axis direction, so as to center and align the left and right positions of the photovoltaic assembly 6 on the support platform through the two slide cylinders to ensure the consistency of the left and right positions of the incoming photovoltaic assembly 6.

[0061] like Figure 4 In the preferred embodiment shown, two groups of centering and alignment cylinder assemblies 24 are spaced apart along the X-axis direction.

[0062] The present application is not limited to this. The conveying mechanism 1 includes a conveying line assembly 11 and a lifting power assembly 13; the conveying line of the conveying mechanism can also extend along the Y direction, including two belt conveyor lines 111 spaced apart along the X direction, to convey the photovoltaic component 6 from the Y direction to the support platform position, and the belt conveyor line 111, the support platform and the EL detection camera's field of view can be avoided in a horizontal position.

[0063] Furthermore, if Figure 7As shown in the figure, the gantry assembly 5 in the preferred embodiment includes a gantry 51, an X-axis moving module 52 and a Y-axis moving module 53; wherein, the X-axis moving module 52 is provided in two, and are respectively provided on both sides of the supporting platform module 2 along the X-axis direction; the gantry 51 extends along the Y-axis direction, and spans over the supporting platform module 2, and its two ends along the Y-axis are respectively fixed on two X-axis moving modules 52, so that it can reciprocate along the X-axis direction under the drive of the X-axis moving module 52, and its reciprocating movement range covers the long side of the photovoltaic component 6 along the X-axis direction.

[0064] Correspondingly, the Y-axis moving module 53 extends along the Y-axis direction and is fixedly arranged on the gantry 51 , and the reciprocating range of the module covers the short side of the photovoltaic assembly 6 along the Y-axis direction.

[0065] In the preferred embodiment, both the X-axis moving module 52 and the Y-axis moving module 53 are linear motors.

[0066] Furthermore, the detection mechanism 3 in the preferred embodiment includes a bonding electrode 33, an EL detection camera 31 and a coarse positioning component 32; Figure 7 As shown in the figure, the bonding electrode 33 is arranged at the bottom of the gantry 51, including a positive electrode and a negative electrode, which are used to connect the positive and negative electrodes of the photovoltaic component 6. Then, the EL detection camera 31 takes pictures to perform EL testing to determine whether there is a cold solder joint and confirm the position of the cold solder joint.

[0067] Accordingly, if Figure 8 As shown in , the EL detection camera 31 is arranged below the support platform to perform EL detection on the photovoltaic module 6 from the hollow part of the support platform to determine whether there is a cold solder joint and confirm the position of the cold solder joint; Figure 4 In the preferred embodiment shown in , the EL detection camera 31 includes a plurality of EL detection cameras 31, which are arranged at intervals in different areas below the supporting platform module 2 and staggered with the position of the belt conveyor line 111, so that the conveyor line assembly 11 can be lowered to avoid the photographing field of the EL detection camera 31, so that all the battery cells on the photovoltaic module 6 can be photographed and inspected by the plurality of EL detection cameras 31 at the same time, so that the EL inspection of the entire photovoltaic module 6 can be completed at one time.

[0068] In a preferred embodiment, three rows of EL detection cameras 31 are arranged at intervals along the Y-axis direction below the supporting platform, and four groups of EL detection cameras 31 are arranged at intervals along the X-axis direction in each row, with a total of 12 groups of detection cameras 31. The position of the EL detection camera 31 in the X-axis direction can be moved according to the layout of the photovoltaic component 6 to adapt to and be compatible with various layouts.

[0069] At the same time, the coarse positioning assembly 32 is arranged on the side of the support platform along the X-axis direction to perform coarse positioning on the photovoltaic assembly 6. Figure 2As shown in FIG. 1 , coarse positioning components 32 are respectively arranged on both sides of the support platform along the X-axis direction.

[0070] Specifically, Fig. 9 As shown in the figure, the coarse positioning assembly 32 includes a coarse positioning motion shaft 321 and a camera coarse positioning module 322 arranged on the coarse positioning motion shaft 321; wherein the coarse positioning motion shaft 321 is a servo motor matched with a screw guide rail, so that the coarse positioning motion shaft 321 drives the camera coarse positioning module 322 to move along the X-axis direction, and then according to the photovoltaic components 6 with different lengths, the position of the camera coarse positioning module 322 is switched through the coarse positioning motion shaft 321 to realize the function of quickly switching the version.

[0071] Preferably, the camera coarse positioning module 322 includes a coarse positioning camera and an annular light source, so that the coarse positioning camera can be used to locate and take photos of the marking points of the photovoltaic module 6, and the position features of the marking points can be captured for coordinate conversion and positioning, so as to determine the specific coordinates of the EL detection of the cold solder joint of this version, so as to facilitate the subsequent rework mechanism 4 to accurately repair the solder joint of the battery cell; the annular light source is used for lighting when the coarse positioning camera takes photos. It can be understood that the marking points can be specially made marking points, or they can be feature points on the photovoltaic module 6, such as feature points of edge battery cells, etc.

[0072] Furthermore, the rework mechanism 4 in the preferred embodiment is arranged on the gantry assembly 5, including a laser welding module 41, which is connected and arranged on the Y-axis moving module 53, so that it can reciprocate along the Y-axis direction under the drive of the Y-axis moving module 53, so that the laser welding module 41 can move freely in the XY direction to the cold soldering coordinate position under the drive of the gantry assembly 5, and perform laser welding rework on the cold soldering point.

[0073] Furthermore, the specific working process of using the photovoltaic module EL testing and repairing equipment in the utility model to perform online testing and repairing of the photovoltaic module 6 is as follows:

[0074] (1) The conveying assembly line assembly 11 is driven by the lifting power assembly 13 to be lifted to the height of the feed assembly line, and the photovoltaic assembly 6 to be inspected that has been welded upstream enters the interior of the machine through the conveying assembly line assembly 11, and the blocking and aligning cylinder 12 and the centering and alignment cylinder assembly 24 position and align the photovoltaic assembly 6 to be inspected;

[0075] (2) The conveyor assembly 11 is driven by the lifting power assembly 13 to descend, and the photovoltaic assembly 6 to be inspected falls on the supporting platform module 2. The conveyor assembly 11 continues to descend to the lowest position, avoiding the field of view of the EL inspection camera 31;

[0076] (3) The gantry 51 moves to the position of the middle bus bar, and the bonding electrode 33 supplies power to the positive and negative electrodes of the bus bar; the 12 groups of EL detection cameras 31 simultaneously take pictures of the photovoltaic module 6 to complete the EL detection and obtain the position information of the cold solder joint; the coarse positioning motion axis 321 moves the coarse positioning camera to the top of the battery cell to take pictures, and identifies the marking point through visual positioning; the coordinates of the cold solder joint position are converted;

[0077] (4) The gantry assembly 5 moves the laser welding module 41 to the cold weld coordinate position for laser welding repair. After the cold weld points are repaired one by one, the gantry assembly 5 moves the repair mechanism 4 to the position of the middle bus bar again, and supplies power to the positive and negative electrodes of the bus bar through the bonding electrode 33. The 12 groups of EL detection cameras 31 in the EL detection camera 31 take pictures at the same time and perform detection again;

[0078] (5) After the test results are qualified, the lifting power assembly 13 drives the conveying assembly 11 to the height of the feed assembly, and the photovoltaic assembly 6 is also lifted to the discharge height. The belt conveyor line 111 transports the photovoltaic assembly 6 along the X-axis direction into the downstream machine.

[0079] The photovoltaic module EL testing and repair equipment in the utility model has a reasonable structural design, can transmit the whole panel of photovoltaic modules to the machine, realize automatic online production docking, and only needs to perform a power-on photo inspection on the whole panel of photovoltaic modules once to complete the whole panel EL inspection, thereby improving the EL inspection efficiency and having good application prospects and promotion value.

[0080] It is easy for those skilled in the art to understand that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A photovoltaic module EL testing and repair equipment, characterized in that: It includes conveying mechanism, supporting platform module, testing mechanism and repair mechanism; The conveying mechanism assembly line includes a lifting power assembly and a conveying assembly line assembly; the lifting power assembly is arranged on a frame, and the conveying assembly line assembly is arranged on the lifting power assembly and extends along the X-axis or Y-axis direction, and is used for conveying photovoltaic components along the X-axis direction or the Y-axis direction; The support platform module is arranged on the frame and at least comprises a support platform; the support platform is hollowed out, and the conveying assembly line assembly places the photovoltaic assembly on the support platform through a lifting power assembly; The detection mechanism includes a bonding electrode and an EL detection camera. The bonding electrode is arranged on the gantry assembly above the support platform to energize the photovoltaic assembly; the EL detection camera is arranged below the support platform to perform EL detection on the photovoltaic assembly from the hollow part of the support platform; The repair mechanism includes a laser welding module, which is arranged above the supporting platform and on the gantry assembly, so as to move to the cold welding position in the XY direction under the drive of the gantry assembly to weld the cold welding point.

2. The photovoltaic module EL testing and repair equipment according to claim 1, characterized in that: The support platform includes a first support assembly, a second support assembly and a third support assembly; The first support assembly is arranged on both sides of the conveying assembly along the conveying direction, and includes a long support frame and a plurality of receiving parts, wherein the long support frame is arranged on the frame and extends along the X-axis direction; the plurality of receiving parts are arranged at intervals on the top of the long support frame along the X-axis direction; The second support assembly is arranged at both ends of the conveying assembly along the conveying direction, and two short support frames extending along the Y-axis direction are arranged at intervals at each end, one end of the short support frame is fixedly connected to the frame, and the other end is suspended, and a plurality of short receiving parts are arranged at intervals along the Y-axis direction on the top of the short support frame; The third support assembly includes an intermediate support frame, which is arranged between the two long support frames and extends along the Y-axis direction, and the two ends of the intermediate support frame along the Y-axis direction are respectively vertically connected to the middle of the two long support frames along the X-axis direction, corresponding to the position of the middle bus bar of the photovoltaic assembly.

3. The photovoltaic module EL testing and repair equipment according to claim 2, characterized in that: The receiving portion and the short receiving portion are both flexible.

4. The photovoltaic module EL testing and repair equipment according to claim 2, characterized in that: The conveying assembly line assembly includes a belt conveyor line and a driving module, and the belt conveyor line can be driven along the X-axis direction by the driving module; The belt conveyor lines are arranged in parallel with each other, and two synchronous belts are arranged in each belt conveyor line along the X-axis direction. The synchronous belts extend along the X-axis direction, and the intermediate support frame is arranged between the two synchronous belts to avoid the intermediate support frame when the belt conveyor line rises.

5. The photovoltaic module EL testing and repair equipment according to claim 1, characterized in that: The EL detection cameras include multiple ones, and the multiple EL detection cameras are arranged at intervals in different areas below the supporting platform. The conveying line assembly can be lowered to avoid the photographing field of the EL detection camera to avoid obstruction of the EL detection camera when photographing the photovoltaic assembly from below.

6. The photovoltaic module EL testing and repair equipment according to claim 5, characterized in that: At least three rows of the EL detection cameras are arranged at intervals along the Y-axis direction below the support platform, and at least four groups of the EL detection cameras are arranged at intervals along the X-axis direction in each row.

7. The photovoltaic module EL testing and repair equipment according to claim 1, characterized in that: A coarse positioning assembly is respectively arranged on both sides of the support platform along the X-axis direction, and the coarse positioning assembly includes a coarse positioning motion axis and a camera coarse positioning module; The coarse positioning motion axis extends along the X-axis direction, and the camera coarse positioning module is arranged on the coarse positioning motion axis to drive the coarse positioning camera to move along the X-axis direction through the coarse positioning motion axis.

8. The photovoltaic module EL testing and repair equipment according to claim 1, characterized in that: The gantry assembly includes a gantry, an X-axis moving module and a Y-axis moving module; The X-axis movable modules are provided in two numbers and are arranged on both sides of the support platform along the X-axis direction; the gantry extends along the Y-axis direction and spans over the support platform, and its two ends along the Y-axis direction are respectively fixed on the two X-axis movable modules; the Y-axis movable module is arranged on the gantry and extends along the Y-axis direction.

9. The photovoltaic module EL testing and repair equipment according to claim 8, characterized in that: The laser welding module is connected and arranged on the Y-axis moving module, and the bonding electrode is connected and arranged on the bottom of the gantry.

10. The photovoltaic module EL testing and repair equipment according to any one of claims 1 to 9, characterized in that: It also includes at least one set of centering and alignment cylinder assemblies, each set of centering and alignment cylinder assemblies includes two slide cylinders with different cylinder diameters, and the two slide cylinders are respectively arranged on both sides of the support platform along the X-axis direction to center and align the left and right positions of the glass substrate on the support platform; and / or, It also includes at least one group of blocking and aligning cylinders, and two blocking and aligning cylinders in each group of blocking and aligning cylinders are respectively arranged at both ends of the conveying line assembly along the conveying direction to center and align the front and rear positions of the glass substrate on the conveying line assembly.

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