Battery string arrangement welding processing system

Abstract

The present application relates to photovoltaic cell processing equipment technical field, specifically to a kind of cell string arrangement welding processing system, including conveying frame, conveying belt is movably installed in the inside of conveying frame, for conveying photovoltaic cell piece in welding process, welding strip is placed on the photovoltaic cell piece, the top of the conveying belt is provided with positioning press, for positioning welding strip.The beneficial effects of the present application are: when positioning welding strip by positioning press during the process of positioning placement, adjust the resistance rod in the process of moving down is blocked by welding strip and drives column to move in driven sleeve, driven column can synchronously drive driven sleeve to rotate when moving, and then the height position of movable cross bar and press jaw assembly is adjusted, realize that according to the position of the top of welding strip, the pressure exerted by press jaw assembly on welding strip is adaptively adjusted, ensure that welding strip can be in close contact with grid line, while avoiding photovoltaic cell piece, welding strip damage due to excessive stress.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic cell processing equipment technology, specifically a cell string arrangement welding processing system. Background Technology

[0002] In the production of solar panels, a multi-busbar stringing process is typically used to string the solar cells together. During this process, multiple robotic arms work together to place the solar cells, solder ribbons, and fixtures onto a conveyor belt. The solder ribbon's front end is positioned on the grid line on the back of the preceding solar cell, and its rear end on the grid line on the front of the following solar cell. The fixture then presses the solder ribbon firmly onto the solar cell. As the conveyor belt transports the solar cells and solder ribbon, a heating mechanism heats the solder ribbon, melting the solder on it. After cooling, the solder ribbon is welded to the grid line of the solar cell, thus stringing the solar cells together.

[0003] For example, invention patent CN111774795B discloses a clamping fixture, which includes a fixture frame and multiple rows of pressure pins arranged on the fixture frame. Each row of pressure pins includes multiple pressure pins arranged in a straight line, and each row of pressure pins is configured to clamp a welding strip. Specifically, for each row of pressure pins, the pressure pin at the middle position of the row is elastically connected to the fixture frame, and the elasticity of the pressure pin at the beginning of the row is less than that of the pressure pin at the middle position. This fixture effectively prevents the welding strip from being deformed or damaged when clamping and positioning it.

[0004] As described in the aforementioned patent, the pressure needle is movably mounted on the pressure fixture and applies elastic force to press the welding strip through a spring. In the prior art, the pressure fixture used to press the welding strip is generally fixed to the conveyor belt by magnetic attraction or other means after being placed on the conveyor belt. Therefore, when the welding strip and the solar cell are at different heights, the pressure applied by the spring-pressed pressure needle to the welding strip and the solar cell is different. In order to improve the positioning effect of the solar cell on the conveyor belt, in addition to the pressure fixture pressing the welding strip above, the conveyor belt is also equipped with positioning fixtures for positioning the solar cell. However, the height of the positioning fixtures varies for different specifications and types of solar cells. The change in the height of the fixtures and the changes in the specifications and thickness of the welding strip and the solar cell themselves will cause a large change in the pressure on the welding strip and the solar cell. This spring-pressed pressure needle cannot adaptively adjust the pressure on the welding strip and the solar cell according to their height position. Therefore, there is an urgent need for a solar cell string arrangement welding processing system to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a battery string arrangement welding processing system to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a battery string arrangement welding processing system, including a conveyor frame, a conveyor belt movably installed inside the conveyor frame for conveying photovoltaic cells during the welding process, welding strips placed on the photovoltaic cells, and a positioning pressure fixture provided on the top of the conveyor belt for positioning the welding strips;

[0007] The positioning fixture includes a fixture base plate and a movable crossbar movably mounted on the fixture base plate. A claw assembly for pressing the welding strip is engaged on the movable crossbar.

[0008] The positioning fixture also includes an adaptive adjustment component, which is connected to the movable crossbar via a transmission connection.

[0009] After the positioning pressure is placed on top of the conveyor belt, the bottom of the adaptive adjustment component abuts against the top of the welding strip; the adaptive adjustment component can adaptively adjust the height of the movable crossbar according to the position of the top of the welding strip, and the movable crossbar drives the pressure claw assembly to move, which can change the downward pressure applied to the welding strip by the pressure claw assembly.

[0010] Preferably, a servo motor is fixedly installed at one end of the conveyor frame to provide power for the rotation of the conveyor belt, and a heating mechanism is provided in the middle of the top of the conveyor frame to weld the welding strip onto the photovoltaic cell.

[0011] Preferably, the adaptive adjustment component includes a fixed crossbar disposed on the press base plate, a driven sleeve rotatably mounted on the top of the fixed crossbar, a drive column disposed at the bottom of the driven sleeve, and an adjusting stop rod detachably mounted at the bottom end of the drive column.

[0012] Preferably, the outer side of the drive column and the bottom end of the driven sleeve are provided with matching spiral grooves, the drive column and the driven sleeve are connected by the spiral grooves, and the driven sleeve and the movable crossbar are connected by threads.

[0013] Preferably, the adjusting rod is located on the side of the drive column near the inside of the press base plate, and the adjusting rod is perpendicular to the moving direction of the photovoltaic cell.

[0014] Preferably, the pressure claw assembly is arranged parallel to the welding strip, and the pressure claw assembly includes a pressing section and a snap-fit ​​section located at both ends of the pressing section. The pressing section is generally wavy, and the snap-fit ​​section is generally U-shaped.

[0015] Preferably, the movable crossbar is provided with a locking seat that cooperates with the pressure claw assembly on the side near the inside of the pressure plate, and the locking seat is provided with locking grooves that cooperate with the locking section and are distributed in an array. The left and right sides of the pressing section are provided with partition columns.

[0016] Preferably, a reset pressure frame is movably mounted on the top of the pressure plate, and a reset post is provided at the bottom of the reset pressure frame for pressing and resetting the drive post.

[0017] Preferably, the press base plate is provided with a locking component for locking the positioning press onto the conveyor belt. The locking component includes a locking post fixedly installed on the conveyor belt, a locking clamp movably installed inside the press base plate, and a spring pin threadedly connected to the press base plate.

[0018] Preferably, one end of the spring pin near the outside of the press base plate is inserted into the locking clamp, and the locking clamp has a locking groove inside that cooperates with the locking pin.

[0019] In the above technical solution, the beneficial effect of the present invention is that: during the positioning and placement of the welding strip by the positioning pressure tool, the adjusting rod is blocked by the welding strip during the downward movement, which drives the driving column to move in the driven sleeve. When the driving column moves, it can synchronously drive the driven sleeve to rotate, thereby adjusting the height position of the movable crossbar and the pressure claw assembly. This realizes the adaptive adjustment of the downward pressure applied to the welding strip by the pressure claw assembly according to the position of the top of the welding strip, ensuring that the welding strip can be in close contact with the grid line while avoiding excessive force damage to the photovoltaic cell and the welding strip.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and illustrative only, and are not intended to limit this disclosure.

[0021] This application provides an overview of various implementations or examples of the technology described in this disclosure, and is not a full disclosure of the entire scope or all features of the disclosed technology. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0023] Figure 1 This is a schematic diagram of the overall assembled structure of the present invention;

[0024] Figure 2 This is a top view of the internal structure of the conveyor frame of the present invention;

[0025] Figure 3 This is a schematic diagram of the structure of the positioning fixture of the present invention when it is used in conjunction with the conveyor belt;

[0026] Figure 4 This is a schematic diagram of the structure of the positioning fixture of the present invention when it is used in conjunction with a photovoltaic cell;

[0027] Figure 5 This is a schematic diagram of the overall structure of the positioning pressure fixture of the present invention;

[0028] Figure 6 This is a schematic diagram of the overall exploded structure of the positioning pressure fixture of the present invention;

[0029] Figure 7 This is a schematic diagram of the overall structure of the pressure claw assembly of the present invention;

[0030] Figure 8 This is a schematic diagram of the structure of the snap-fit ​​segment and the snap-fit ​​groove of the present invention;

[0031] Figure 9 This is a top view of the structure of the pressure claw assembly of the present invention after being arranged in parallel;

[0032] Figure 10 This is a front view of the pressure claw assembly of the present invention.

[0033] Figure 11 This is a top-view schematic diagram of the wave-shaped structure of the pressure section of the present invention;

[0034] Figure 12 This is a schematic diagram of the structure for locking the installation position of the component in this invention;

[0035] Figure 13 This is a schematic diagram of the overall structure of the locking component of the present invention.

[0036] Explanation of reference numerals in the attached figures:

[0037] In the diagram: 1. Mounting frame; 2. Conveyor frame; 3. Conveyor belt; 4. Servo motor; 5. Heating mechanism; 6. Photovoltaic cell; 7. Welding strip; 8. Positioning fixture; 81. Fixture base plate; 82. Fixed crossbar; 83. Driven sleeve; 84. Drive column; 85. Adjusting abutment; 86. Movable crossbar; 87. Snap-fit ​​seat; 871. Snap-fit ​​groove; 88. Claw assembly; 881. Snap-fit ​​section; 882. Elastic section; 883. Pressing section; 884. Separator column; 89. Reset fixture; 810. Positioning column; 811. Reset column; 812. Locking assembly; 8121. Locking clamp; 8122. Spring pin; 8123. Locking post; 9. Positioning tooling. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0039] Please see Figure 1-13 This invention provides a technical solution: a battery string arrangement welding processing system, including a conveyor frame 2, a conveyor belt 3 movably installed inside the conveyor frame 2 for conveying photovoltaic cells 6 during the welding process, and an installation frame 1. The conveyor frame 2 is fixedly installed on the top of the installation frame 1. Welding strips 7 are placed on the photovoltaic cells 6. A positioning pressure 8 is provided on the top of the conveyor belt 3 for positioning the welding strips 7. Evenly distributed positioning fixtures 9 are fixedly installed on the conveyor belt 3 for positioning the photovoltaic cells 6. The positioning fixtures 9 are prior art, and their principle and usage process will not be described in detail here.

[0040] The positioning fixture 8 includes a fixture base plate 81 and a movable crossbar 86 movably mounted on the fixture base plate 81. A claw assembly 88 for pressing the welding strip 7 is engaged on the movable crossbar 86.

[0041] The positioning pressure fixture 8 also includes an adaptive adjustment component, which is connected to the movable crossbar 86 via a transmission connection;

[0042] After the positioning pressure 8 is placed on top of the conveyor belt 3, the bottom of the adaptive adjustment component abuts against the top of the welding strip 7. The adaptive adjustment component can adaptively adjust the height of the movable crossbar 86 according to the position of the top of the welding strip 7. The movable crossbar 86 drives the pressure claw assembly 88 to move, which can change the downward pressure applied by the pressure claw assembly 88 to the welding strip 7.

[0043] During the stringing process of photovoltaic cells 6, the conveyor belt 3 transports the photovoltaic cells 6 in the stringing process. The control system controls multiple robotic arms in the prior art to cooperate with each other to place the photovoltaic cells 6 and the welding ribbon 7 in the positioning fixture 9. The positioning pressure fixture 8 is pressed on the welding ribbon 7 and the photovoltaic cells 6. The front end of the welding ribbon 7 is positioned on the grid line on the back of the front cell, and the rear end is positioned on the grid line on the front of the rear cell. The positioning pressure fixture 8 presses the placed welding ribbon 7 firmly onto the photovoltaic cells 6 to position the welding ribbon 7. The conveyor belt 3 transports the arranged photovoltaic cells 6, welding ribbon 7, and positioning pressure fixture 8 to the heating mechanism 5. The heating mechanism 5 heats the welding ribbon 7, melting the solder on the welding ribbon 7. After the welding ribbon 7 leaves the heating mechanism 5, the solder re-solidifies, welding the welding ribbon 7 to the grid line of the photovoltaic cells 6, thus realizing the stringing of several photovoltaic cells 6.

[0044] Specifically, after the photovoltaic cells 6 and welding ribbons 7 are arranged on the positioning fixture 9 on the conveyor belt 3 by the existing robotic arm, before the arranged photovoltaic cells 6 enter the bottom of the heating mechanism 5, the positioning fixture 8 is clamped by the robotic arm and pressed onto the top of the arranged photovoltaic cells 6 and welding ribbons 7. The positioning fixture 8 is used to press and position the arranged photovoltaic cells 6 and welding ribbons 7. During the placement process, the adjusting rod 85 moves down to contact the welding ribbon 7. The adjusting rod 85 is blocked by the welding ribbon 7 and drives the drive column. 84 moves within the driven sleeve 83. The drive column 84 and the driven sleeve 83 are connected by a screw, but the drive column 84 cannot rotate. When the drive column 84 moves within the driven sleeve 83, it can synchronously drive the driven sleeve 83 to rotate. The driven sleeve 83 and the movable crossbar 86 are connected by a thread. When the driven sleeve 83 rotates, it can drive the movable crossbar 86 to move upward, adjusting the height position of the movable crossbar 86 and the pressure claw assembly 88. This allows for adaptive adjustment of the downward pressure applied to the welding strip 7 by the pressure claw assembly 88 based on the height position of the photovoltaic cell 6 and the welding strip 7.

[0045] Compared with the prior art, the battery string arrangement welding processing system proposed in this embodiment of the invention has the following characteristics: during the positioning and placement of the welding strip 7 by the positioning pressure fixture 8, the adjusting rod 85 is blocked by the welding strip 7 during its downward movement, which drives the driving column 84 to move in the driven sleeve 83. When the driving column 84 moves, it can synchronously drive the driven sleeve 83 to rotate, thereby adjusting the height position of the movable crossbar 86 and the pressure claw assembly 88. This allows the downward pressure applied to the welding strip 7 by the pressure claw assembly 88 to be adaptively adjusted according to the position of the top of the welding strip 7, ensuring that the welding strip 7 can make close contact with the grid lines while avoiding damage to the photovoltaic cells 6 and the welding strip 7 due to excessive force.

[0046] As a preferred technical solution in this embodiment, a servo motor 4 is fixedly installed at one end of the conveyor frame 2 to provide power for the rotation of the conveyor belt 3. A heating mechanism 5 is provided in the middle of the top of the conveyor frame 2 to weld the solder strip 7 onto the photovoltaic cell 6. Specifically, the servo motor 4 and the heating mechanism 5 are both existing technologies and are controlled by the control system in the existing technology. The servo motor 4 can drive the conveyor belt 3 to rotate and transport the arranged photovoltaic cell 6, solder strip 7 and positioning fixture 8. The heating mechanism 5 can heat the photovoltaic cell 6 and solder strip 7 that enter its bottom, so that the solder on the solder strip 7 melts and the solder re-solidifies after the solder strip 7 leaves the heating mechanism 5, thereby realizing the welding of the solder strip 7 onto the grid line of the photovoltaic cell 6.

[0047] As a preferred embodiment, the adaptive adjustment component includes a fixed crossbar 82 disposed on the press base plate 81. A driven sleeve 83 is rotatably mounted on the top of the fixed crossbar 82, and a drive column 84 is disposed at the bottom of the driven sleeve 83. An adjusting abutment 85 is detachably mounted at the bottom end of the drive column 84. Specifically, adaptive adjustment components are disposed at both the front and rear ends of the press base plate 81. The two sets of adaptive adjustment components adaptively adjust the pressure claw assembly 88 to apply downward pressure to the welding strip 7 according to the height position of both ends of the top welding strip 7 of the photovoltaic cell 6. The pressure ensures that the welding ribbon 7 can make close contact with the grid line while avoiding damage to the photovoltaic cell 6 and the welding ribbon 7 due to excessive force. During the placement process, the adjusting rod 85 moves down and first contacts the welding ribbon 7. The adjusting rod 85 is blocked by the welding ribbon 7, which drives the driving column 84 to move in the driven sleeve 83. When the driving column 84 moves in the driven sleeve 83, it can drive the driven sleeve 83 to rotate synchronously. At the same time, when the driven sleeve 83 rotates, it can drive the movable crossbar 86 to move upward, thereby adjusting the height position of the movable crossbar 86 and the pressure claw assembly 88.

[0048] As a preferred technical solution in this embodiment, the outer side of the drive column 84 and the bottom end of the driven sleeve 83 are provided with mutually cooperating spiral grooves. The drive column 84 and the driven sleeve 83 are connected by the spiral grooves. The driven sleeve 83 and the movable crossbar 86 are threadedly connected. Specifically, the thread helix angle of the spiral groove at the connection position between the drive column 84 and the driven sleeve 83 is greater than the equivalent friction angle, so the drive column 84 and the driven sleeve 83 cannot achieve self-locking. The drive column 84 and the driven sleeve 83 are spirally connected and do not achieve self-locking, but the drive column 84 cannot rotate. When the drive column 84 moves inside the driven sleeve 83, it can synchronously drive the driven sleeve 83 to rotate. The thread helix angle of the thread at the connection position between the driven sleeve 83 and the movable crossbar 86 is less than the equivalent friction angle, so the movable crossbar 86 and the driven sleeve 83... The driven sleeve 83 and the movable crossbar 86 are threaded together. When the driven sleeve 83 rotates, it can drive the movable crossbar 86 to move. The direction of movement of the adjusting rod 85 and the movable crossbar 86 is controlled by the rotation direction of the external spiral groove of the driving column 84 and the rotation direction of the external thread of the driven sleeve 83, so as to ensure that when the adjusting rod 85 moves upward, the movable crossbar 86 drives the pressure claw assembly 88 to move upward synchronously. The movable crossbar 86 and the driven sleeve 83 can achieve self-locking to ensure the stability of the movable crossbar 86 after the position is adjusted. The gravity of the movable crossbar 86 and the pressure claw assembly 88 is transmitted to the pressure plate 81 through the driven sleeve 83 and the fixed crossbar 82, so as to avoid the gravity of the pressure claw assembly 88 and the movable crossbar 86 acting on the driving column 84, which would cause excessive force on the end of the welding strip 7.

[0049] As a preferred technical solution of this embodiment, the adjusting rod 85 is located on the side of the drive column 84 near the inside of the pressure plate 81. The adjusting rod 85 is perpendicular to the moving direction of the photovoltaic cell 6. Specifically, the adjusting rod 85 in the two sets of adaptive adjusting components can adaptively adjust the downward pressure applied to the welding strip 7 by the pressure claw assembly 88 according to the height position of both ends of the welding strip 7. At the same time, the two sets of adjusting rods 85 can also press against both ends of the welding strip 7 to assist in positioning the welding strip 7.

[0050] In another embodiment of the present invention, the pressure claw assembly 88 is arranged parallel to the welding strip 7, and the pressure claw assembly 88 includes a pressing section 883 and a locking section 881 located at both ends of the pressing section 883. The pressing section 883 is generally wavy, and the locking section 881 is generally U-shaped. Specifically, the pressing section 883 is generally wavy, which can form multiple pressing positions at the bottom to achieve pressing and positioning of the welding strip 7 at multiple points. The locking sections 881 at both ends of the pressing section 883 can detachably install the pressure claw assembly 88 onto the movable crossbar 86 to ensure the stability of the position of the pressure claw assembly 88 during operation, and at the same time facilitate the adjustment of the installation position. An elastic section 882 is also provided between the locking section 881 and the pressing section 883. The elastic section 882 deforms under force, which can improve the pressing and positioning effect of the pressing section 883 on the welding strip 7. A V-shaped groove is opened at the bottom of the pressing section 883 where the welding strip 7 is pressed, which can achieve effective pressing of welding strips with rectangular or circular cross sections.

[0051] In the prior art, the number of grid lines on different photovoltaic cells 6 varies, and as the number of grid lines increases, the width of the grid lines gradually decreases. If the installation position of the pressure claw assembly 88 and the top-view coverage area are fixed, it is difficult to apply different numbers and widths of grid lines. Therefore, the following embodiments are proposed to solve the above problems.

[0052] In another embodiment of the present invention, a locking seat 87 that cooperates with the pressure claw assembly 88 is provided on the side of the movable crossbar 86 near the interior of the pressure plate 81. The locking seat 87 has locking grooves 871 that cooperate with the locking section 881 and are arranged in an array. Separating posts 884 are provided on both the left and right sides of the pressing section 883. Specifically, by locking the locking section 881 into the locking groove 871, the pressure claw assembly 88 can be firmly positioned as a whole. By squeezing the locking section 881 inward, the locking section 881 can be removed along the locking groove 871. The position of the pressure claw assembly 88 can be adaptively adjusted according to the position of the grid lines on the photovoltaic cell 6. The quantity and installation position of the clamping claw assembly; when the grid line width is narrow, the clamping claw assembly 88 is used independently; when the grid line width exceeds the thickness of a single clamping claw assembly 88, multiple clamping claw assemblies 88 are used in parallel according to the grid line width, ensuring that the parallel clamping claw assemblies 88 can fully cover the welding strip 7, achieving a firm positioning of the welding strip 7; it should be noted that, in order to avoid the parallel clamping claw assemblies 88 blocking the top infrared light source, evenly distributed partition columns 884 are set on the left and right sides of the pressing section 883, so that there is a gap between the parallel clamping claw assemblies 88, reducing the obstruction of the infrared light source and ensuring that the welding strip 7 can be heated evenly; it should also be noted that, Figure 10 As shown, the pressing section 883 can also be configured as a wave-shaped structure when viewed from above. This structure can also ensure that there is a gap between the parallel pressing claw assemblies 88.

[0053] In another embodiment of the present invention, a reset pressure frame 89 is movably mounted on the top of the pressure plate 81, and a reset post 811 is provided at the bottom of the reset pressure frame 89 for pressing and resetting the drive post 84. Specifically, positioning posts 810 are provided at the four corners of the bottom of the reset pressure frame 89, and the positioning posts 810 are movably connected to the pressure plate 81. In the initial state, the reset posts 811 are inserted into the driven sleeve 83; when the positioning pressure 8 is placed on the top of the conveyor belt 3 to position the welding strip 7, the positioning posts 810... The bottom is in pre-contact with the conveyor belt 3. During the downward placement of the pressure plate 81, the reset column 811 is pulled out along the driven sleeve 83, releasing the pressure on the drive column 84, so that the drive column 84 is not subjected to external force at this time. After the welding strip 7 positioned by the positioning pressure plate 8 is welded, when the robotic arm clamps the positioning pressure plate 8 and separates it from the photovoltaic cell 6 and the welding strip 7, the reset pressure frame 89 falls back to reset under the action of gravity, and the reset column 811 is re-inserted into the driven sleeve 83 to press the drive column 84 back to reset, which is convenient for subsequent use.

[0054] As can be seen from the above embodiments, in order to ensure that the adaptive adjustment component, the movable crossbar 86, and the pressure claw component 88 can work stably when the positioning fixture 8 is positioned to the welding strip 7, the fixture base plate 81 needs to be in a fixed state during use. Therefore, the following embodiments are proposed to solve the above problems.

[0055] In another embodiment of the present invention, a locking component 812 is provided on the pressure plate 81 for locking the positioning pressure 8 onto the conveyor belt 3. The locking component 812 includes a locking post 8123 fixedly installed on the conveyor belt 3, a locking clamp 8121 movably installed inside the pressure plate 81, and a spring pin 8122 threadedly connected to the pressure plate 81. Specifically, locking components 812 are provided at both the left and right ends of the pressure plate 81. In the prior art, the robotic arm clamps the left and right ends of the pressure plate 81 to realize the overall handling of the positioning pressure 8. When the left and right ends of the pressure plate 81 are clamped, the two sets of locking components 812 are squeezed open; the locking clamp 8121 is squeezed to overcome the elastic force of the spring pin 8122 and retracts into the pressure plate 81, leaving space for the locking post 8123 to enter the locking clamp 8121. When the pressure plate 81 is placed on the top of the conveyor belt 3, the locking post 8123 can be inserted into the locking clamp 8121 along the bottom of the pressure plate 81.

[0056] As a preferred technical solution in this embodiment, one end of the spring pin 8122 near the outside of the press base plate 81 is inserted into the locking clamp 8121. The locking clamp 8121 has a locking groove that cooperates with the locking post 8123. Specifically, when the press base plate 81 is placed on the top of the conveyor belt 3, the robotic arm disengages from the press base plate 81. At this time, the spring pin 8122 applies a spring force to the locking clamp 8121, causing the locking clamp 8121 to reset. The locking groove in the locking clamp 8121 engages with the outside of the end of the locking post 8123, thereby locking the press base plate 81 on the conveyor belt 3.

[0057] This application discloses a battery string arrangement welding processing system. In use, a robotic arm, as in the prior art, arranges photovoltaic cells 6 and welding strips 7 on a positioning fixture 9 on a conveyor belt 3. The positioning fixture 9 positions the photovoltaic cells 6 and positions the front end of the welding strip 7 on the grid line on the back of the front cell and the rear end on the grid line on the front of the rear cell. Then, the robotic arm clamps a positioning press 8 and presses it onto the top of the arranged photovoltaic cells 6 and welding strips 7. The positioning press 8 presses and positions the arranged photovoltaic cells 6 and welding strips 7. In the initial state, the adjusting rod 85 is located at the lowest position inside the driven sleeve 83. At this time, the pressure claw assembly 88 is at its lowest position, and the bottom of the pressing section 883 is 0.5-1mm below the bottom of the adjusting rod 85. The pressing section 883 is pressed against the welding strip 7 by the elastic force of the elastic section 882. During the placement of the positioning fixture 8, the adaptive adjustment component and the locking component 812 move synchronously. As the adjusting rod 85 moves downwards, it contacts the welding strip 7 and, blocked by the welding strip 7, causes the driving column 84 to retract into the driven sleeve 83. The driving column 84 and the driven sleeve 83 are spirally connected, and the driving column 84 cannot rotate, thus driving the driven sleeve 83 to rotate during movement. The driven sleeve 83 and the movable crossbar 86 are threadedly connected. When the driven sleeve 83 rotates, it can drive the movable crossbar 86 to move upwards, adjusting the height of the movable crossbar 86 and the pressure claw assembly 88. This achieves adaptive adjustment of the downward pressure applied to the welding strip 7 by the pressure claw assembly 88 based on the height of the photovoltaic cell 6 and the welding strip 7. The moving speed between the driving column 84 and the movable crossbar 86 is 1:1, thus ensuring that the bottom of the adjusting rod 85 and the bottom of the pressing section 883 always have a 0-degree angle.The 5-1mm gap allows the pressing section 883 to retract upwards after pressing against the welding strip 7, and the elastic force of the elastic section 882 ensures the pressing effect. When the positioning fixture 8 positions the welding strip 7, the bottom of the positioning post 810 is in pre-contact with the conveyor belt 3, restricting the position of the reset fixture 89. During the downward movement of the fixture base plate 81, the relative position between the reset fixture 89 and the fixture base plate 81 changes, and the reset post 811 is pulled out along the driven sleeve 83, releasing the pressure on the drive post 84, so that the drive post 84 is no longer subject to external force. After welding, the positioning fixture 8 is moved along the conveyor belt 3 by the robotic arm, and the reset fixture 89 falls back to its original position under gravity. The reset column 811 is re-inserted into the driven sleeve 83, pressing the drive column 84 back to its original position for subsequent use. When the robotic arm clamps the positioning fixture 8 and places it on the conveyor belt 3, the two sets of locking components 812 are opened by compression when the robotic arm clamps the left and right ends of the fixture base plate 81. The locking clamp 8121 is compressed and retracts into the fixture base plate 81 against the elastic force of the spring pin 8122, thus pressing the bottom of the fixture base plate 81. The insertion hole for engaging the locking pin 8123 is open. When the pressure plate 81 is placed on top of the conveyor belt 3, the locking pin 8123 can be inserted into the pressure plate 81 along the insertion hole, and the top of the locking pin 8123 is locked into the locking clamp 8121. After the pressure plate 81 is in place, the robotic arm disengages, and the spring pin 8122 applies elastic force to the locking clamp 8121, causing the locking clamp 8121 to return to its original position. The locking slot on the locking clamp 8121 engages with the outer side of the end of the locking pin 8123, thereby locking the pressure plate 81 onto the conveyor belt 3; the pressure claw assembly 8 The entire assembly 8 is detachably installed in the mounting base 87 via a locking segment 881 and a locking groove 871. The number and position of the positioning clamps 8 can be adjusted according to the position of the solder strip 7 on the photovoltaic cell 6. Multiple clamping claw assemblies 88 are used in parallel according to the width of the solder strip 7, ensuring complete coverage and secure positioning of the solder strip 7. Separating posts 884 are provided between adjacent clamping claw assemblies 88 to create gaps and reduce obstruction of the heating light source.

[0058] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A battery string arrangement welding processing system, comprising a conveying frame (2), a conveying belt (3) is movably mounted in the inside of the conveying frame (2), used for conveying photovoltaic cell pieces (6) in a welding process, and a solder strip (7) is placed on the photovoltaic cell pieces (6), characterized in that, The top of the conveying belt (3) is provided with a positioning press (8) for positioning the welding strip (7); The positioning press (8) comprises a press base plate (81) and a movable cross bar (86) movably mounted on the press base plate (81), and a press jaw assembly (88) for pressing the welding strip (7) is clamped on the movable cross bar (86); The positioning press (8) further comprises a self-adaptive adjusting assembly which is in transmission connection with the movable cross bar (86); After the positioning press (8) is placed on the top of the conveying belt (3), the bottom of the self-adaptive adjusting assembly abuts against the top of the welding strip (7); the self-adaptive adjusting assembly can adaptively adjust the height of the movable cross bar (86) according to the position of the top of the welding strip (7), and the movement of the movable cross bar (86) with the press jaw assembly (88) can change the pressing force of the press jaw assembly (88) on the welding strip (7); The self-adaptive adjusting assembly comprises a fixed cross bar (82) arranged on the press base plate (81), a driven sleeve (83) rotatably mounted on the top of the fixed cross bar (82), a drive column (84) arranged at the bottom of the driven sleeve (83), and an adjusting abutting rod (85) detachably mounted at the bottom end of the drive column (84); The outer part of the drive column (84) and the bottom end of the driven sleeve (83) are provided with mutually matched spiral grooves, the drive column (84) and the driven sleeve (83) are in transmission connection through the spiral grooves, and the driven sleeve (83) and the movable cross bar (86) are in threaded connection; The adjusting abutting rod (85) is located on the side of the drive column (84) close to the inside of the press base plate (81), and the adjusting abutting rod (85) is perpendicular to the moving direction of the photovoltaic cell (6); The press jaw assembly (88) is arranged in parallel to the welding strip (7), and the press jaw assembly (88) comprises a pressing section (883) and clamping sections (881) located at both ends of the pressing section (883); the pressing section (883) is in a wave shape as a whole, and the clamping sections (881) are in a U shape as a whole; The side of the movable cross bar (86) close to the inside of the press base plate (81) is provided with a clamping seat (87) matched with the press jaw assembly (88), and the clamping seat (87) is provided with clamping grooves (871) matched with the clamping sections (881) and arranged in an array; the left and right sides of the pressing section (883) are both provided with partition columns (884).

2. The battery string arrangement welding system of claim 1, wherein, One end of the conveying frame (2) is fixedly provided with a servo motor (4) for providing power for the rotation of the conveying belt (3), and the middle part of the top of the conveying frame (2) is provided with a heating mechanism (5) for welding the welding strip (7) on the photovoltaic cell (6).

3. The battery string arrangement welding system of claim 1, wherein, The top of the press base plate (81) is movably provided with a reset press frame (89), and the bottom of the reset press frame (89) is provided with a reset column (811) for pressing reset of the drive column (84).

4. The battery string arrangement welding system of claim 1, wherein, The pressing base plate (81) is provided with a locking assembly (812) for locking the positioning pressing device (8) on the conveying belt (3), the locking assembly (812) comprises a locking column (8123) fixedly installed on the conveying belt (3), a locking clamping plate (8121) movably installed inside the pressing base plate (81), and a spring pin (8122) threadedly connected to the pressing base plate (81).

5. The battery string arrangement welding system of claim 4, wherein, The spring pin (8122) is inserted into the locking clamping plate (8121) near one end of the pressing base plate (81), and the inside of the locking clamping plate (8121) is provided with a locking clamping groove matched with the locking column (8123).

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