A welding device for photovoltaic panel processing

Abstract

The application discloses a kind of welding devices for photovoltaic panel processing, it is related to photovoltaic panel welding processing technical field, including conveying mechanism, the conveying mechanism includes base and the transmission belt component of installation on base, and welding band preparation area is provided with cutting mechanism, and feeding area is provided with guide mechanism and traction mechanism, and preprocessing area is provided with preprocessing mechanism, and welding area is provided with welding mechanism installed on base.Optimal advantage is that in preprocessing area, by L-shaped pre-pressing piece, the middle part of welding band section is pre-pressed, effectively eliminates stress, eliminates height difference and ensures the degree of fit;Offset component corrects and aligns welding band section with battery piece main grid line, ensures that the current collected from battery piece main grid line can be evenly transmitted through the entire welding band section;Pre-pressing preheating component implements pre-pressing and preheating treatment to the corrected welding band section, prevents welding band from being placed unreal, leads to the situation that there is virtual welding between welding band and battery piece, and welding speed can also be effectively improved.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic panel welding and processing technology, and in particular to a welding apparatus for photovoltaic panel processing. Background Technology

[0002] A photovoltaic (PV) panel, also known as a solar panel, is a device that directly converts sunlight into electrical energy. The manufacturing process of PV panels typically includes laser scribing, stringing, lamination, coating, etc. In the stringing step, a stringing machine is commonly used to weld solder strips (tinned copper strips) onto the electrodes on the front of the next cell and the back of the next cell, forming a "cell string" capable of outputting a high voltage.

[0003] The current stringing process typically includes steps such as cell loading and positioning, solder ribbon loading and positioning, and welding. Cells, having undergone previous processes (such as PL testing), are usually removed from the material box or conveyor belt by a robotic arm and placed on the stringing machine's loading conveyor line. The solder ribbon, after being pulled from the reel, is straightened and cut to a fixed length. A laying head, consisting of a vacuum nozzle or mechanical grippers, moves to the cutting station, grabbing the entire ribbon and placing it onto the main grid line of the cell. Finally, the welding mechanism uses infrared radiation of a specific wavelength emitted by infrared lamps to melt the tin layer on the solder ribbon and activate the silver paste on the cell grid line. The molten solder and silver paste undergo a metallurgical reaction, and the welding operation is completed after gradual cooling. However, when the solder ribbon is connected to the main grid line of the solar cell, there is a height difference between the part of the solder ribbon connecting the front of the previous solar cell and the back of the next solar cell. This makes it impossible for the solder ribbon to be completely close to the solar cell. Furthermore, during placement and transportation, there are also issues such as positional deviation, improper placement, and solder ribbon twisting, which can lead to incomplete soldering and affect the quality of the welding. Uneven current transmission to the solar cell subsequently affects its use.

[0004] Therefore, in order to improve the quality of welding, the present invention provides a welding apparatus for photovoltaic panel processing. Summary of the Invention

[0005] The purpose of this invention is to solve the problems existing in the prior art by proposing a welding device for photovoltaic panel processing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a welding device for photovoltaic panel processing, comprising a conveying mechanism, the conveying mechanism comprising a base and a conveyor belt assembly mounted on the base, the conveyor belt assembly conveying photovoltaic panel cells from left to right, the base having a welding strip preparation area, a feeding area, a pretreatment area and a welding area arranged sequentially from left to right, the welding strip preparation area being provided with a cutting mechanism, the feeding area being provided with a guiding mechanism and a traction mechanism, the pretreatment area being provided with a pretreatment mechanism, and the welding area being provided with a welding mechanism mounted on the base.

[0007] The pretreatment mechanism includes a support frame fixedly connected to the support base. A spiral frame is connected to the support frame by an electric slider. An inverted L-shaped pre-compression component facing forward and backward is detachably installed on the left bottom wall of the spiral frame. The bottom wall of the inverted L-shaped pre-compression component is chamfered. A pre-compression and preheating component is also provided on the spiral frame. An anti-deviation component is provided on the pre-compression and preheating component.

[0008] In the pretreatment zone, the middle part of the welding strip is pre-pressed vertically by an inverted L-shaped pre-pressing component, so that the welding strip forms a micro-bent structure with an approximate Z-shape. The anti-offset component corrects and aligns the welding strip with the main busbar of the battery cell in the horizontal direction. The pre-pressing and preheating component pre-presses and preheats the corrected welding strip in the vertical direction. Thus, the welding operation is carried out in a precise and efficient manner by coordinating the vertical pre-pressing, horizontal correction and alignment and preheating of the welding strip.

[0009] In the aforementioned welding device for photovoltaic panel processing, the cutting mechanism includes a fixed seat fixedly connected to the top wall of the base of the conveying mechanism. A cutting blade is connected to the fixed seat in a symmetrical sliding manner, and a hydraulic cylinder with its output end connected to the cutting blade is installed on the fixed seat.

[0010] In the aforementioned welding device for photovoltaic panel processing, the conveyor belt assembly includes a fixed part and a conveying part. The guiding mechanism includes a slide rail mounted on the fixed part, and a guide plate is connected to the slide rail by an electric slider to slide left and right. Multiple guide grooves with a left-right orientation are evenly opened on the guide plate from front to back.

[0011] In the aforementioned welding device for photovoltaic panel processing, the traction mechanism includes an L-shaped sliding frame that is connected to the top wall of the base of the conveying mechanism by being driven to slide left and right by an electric slider. Multiple clamping mechanical clamps corresponding to the positions of the guide grooves are evenly installed on the horizontal section of the L-shaped sliding frame from front to back.

[0012] In the above-mentioned welding device for photovoltaic panel processing, the pre-pressing and preheating component includes a drive plate. The left and right inner walls of the circular frame are symmetrically provided with sliding grooves. The drive plate is slidably connected to the two sliding grooves. Multiple support plates corresponding to the positions of the guide grooves are provided below the drive plate, and the left and right side walls of the support plates are fixedly connected to the inner wall of the circular frame.

[0013] In the above-mentioned welding device for photovoltaic panel processing, a second sliding groove with left and right symmetry is provided on the support plate, and a pre-pressing and preheating part is connected to the second sliding groove by sliding up and down. The pre-pressing and preheating part includes two rectangular blocks slidably connected to the corresponding second sliding groove and a pre-pressing and preheating component fixedly connected to the bottom wall of the two rectangular blocks.

[0014] In the aforementioned welding device for photovoltaic panel processing, the top wall of the rectangular block is detachably and fixedly connected to the drive plate, and the pre-pressing and preheating component includes a flat plate fixedly connected to the bottom wall of the rectangular block and trapezoidal plates symmetrically fixedly connected to the bottom wall of the flat plate.

[0015] In the above-mentioned welding device for photovoltaic panel processing, a slide groove three is provided on the support plate, and the anti-deviation component includes an anti-deviation member slidably connected to the slide groove three. The anti-deviation member includes a pushing block that is slidably connected to the slide groove three by a spring and an anti-deviation plate that is fixedly connected to the bottom wall of the pushing block.

[0016] In the above-mentioned welding device for photovoltaic panel processing, the anti-deviation plate is L-shaped, and the top wall of the horizontal section of the anti-deviation plate is provided with a groove that matches the trapezoidal plate of the pre-pressing and preheating section. The sliding groove three has drive blocks that are symmetrically distributed on the left and right sides and are connected by electric sliders to slide left and right.

[0017] In the aforementioned welding device for photovoltaic panel processing, the side of the drive block away from the support plate has two opposing inclined surfaces forming an arrow shape, and the left and right sides of the push block near the drive block have matching inclined shapes.

[0018] Compared with existing technologies, the advantages of this invention are as follows: 1. In the pretreatment zone, the middle part of the welding strip is pre-pressed vertically by an inverted L-shaped pre-pressing component, which effectively eliminates stress and height differences to ensure the degree of fit; the anti-offset component corrects and aligns the welding strip with the main busbar of the battery cell in the horizontal direction, ensuring that the current collected from the main busbar of the battery cell can be uniformly transmitted through the entire welding strip cross section; the pre-pressing and preheating component pre-presses and preheats the corrected welding strip in the vertical direction to prevent the welding strip from being improperly placed, which could lead to a false weld between the welding strip and the battery cell, and can also effectively improve the welding speed.

[0019] 2. Pre-compression is performed using an inverted L-shaped pre-compression component, changing the middle of the welding strip from a horizontal state to a slightly curved state close to a Z-shape. This avoids stress on the middle of the welding strip caused by the falling of the solar cells during subsequent installation, eliminates height differences, and ensures a good fit. At the same time, it can also absorb and compensate for the thermal stress generated by the thermal expansion and contraction of the solar cell material during the operation of the photovoltaic module, preventing microcracks in the solar cells.

[0020] 3. By using two anti-offset plates for fine-tuning and correction, the small or uneven contact area between the main grid line of the solar cell and the solder ribbon is prevented, avoiding additional resistance and hot spots caused by poor local contact. This improves the alignment accuracy between the solder ribbon and the main grid line of the solar cell, ensuring that the current collected from the main grid line of the solar cell can be uniformly transmitted through the entire solder ribbon cross-section.

[0021] 4. Pre-pressing is performed using a pre-pressed and preheated flat plate to prevent improper placement of the solder strip, which could lead to incomplete soldering between the solder strip and the battery cell. At the same time, the interface between the solder strip and the main busbar is preheated, which greatly reduces the heat load on the subsequent entry into the welding zone, enabling faster welding speed and better consistency of the weld points, effectively preventing incomplete soldering. Attached Figure Description

[0022] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, wherein:

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

[0024] Figure 2 This is a schematic diagram of the cutting mechanism;

[0025] Figure 3 This is a structural diagram of the guiding mechanism and the traction mechanism;

[0026] Figure 4 A three-dimensional schematic diagram showing the connection between multiple solar panels and welding strips;

[0027] Figure 5 This is a front view of the structure before the solar panel is connected to the welding strip.

[0028] Figure 6 This is a front view schematic diagram of the structure after the solar panel and the solder strip are connected;

[0029] Figure 7 This is a structural schematic diagram of an inverted L-shaped preload component;

[0030] Figure 8 A partial structural schematic diagram of the pre-compression and preheating assembly;

[0031] Figure 9 for Figure 8 A structural diagram from another perspective;

[0032] Figure 10 This is a schematic diagram of the exploded structure of the pretreatment mechanism;

[0033] Figure 11 Schematic diagram of the structure before correction of the pre-compression and preheating section and before pressure is applied to the anti-deviation component;

[0034] Figure 12 This is a schematic diagram of the structure after the pre-compression and preheating section has been corrected and after the anti-deviation component has been pressurized.

[0035] In the diagram: 1. Conveying mechanism; 2. Cutting mechanism; 21. Hydraulic cylinder; 22. Cutting shears; 3. Guiding mechanism; 31. Slide rail; 32. Guide plate; 4. Traction mechanism; 41. L-shaped sliding frame; 42. Clamping mechanical clamp; 5. Pre-treatment mechanism; 51. Support frame; 52. Reverse frame; 53. Inverted L-shaped pre-compression component; 54. Pre-compression and preheating assembly; 541. Support plate; 542. Pre-compression and preheating section; 543. Drive plate; 55. Anti-deviation assembly; 551. Anti-deviation component; 552. Drive block; 6. Welding mechanism. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Reference Figure 1 A welding device for photovoltaic panel processing includes a conveying mechanism 1. The conveying mechanism 1 includes a base and a conveyor belt assembly mounted on the base. The conveyor belt assembly conveys photovoltaic panel cells from left to right. The base has a welding strip preparation area, a feeding area, a pretreatment area and a welding area arranged sequentially from left to right. The welding strip preparation area is provided with a cutting mechanism 2. The feeding area is provided with a guiding mechanism 3 and a traction mechanism 4. The pretreatment area is provided with a pretreatment mechanism 5. The welding area is provided with a welding mechanism 6 mounted on the base.

[0038] Reference Figures 1 to 2 The cutting mechanism 2 includes a fixed seat that is fixedly connected to the top wall of the base of the conveying mechanism 1. A cutting blade 22 is connected to the fixed seat by sliding symmetrically up and down. A hydraulic cylinder 21 with its output end connected to the cutting blade 22 is installed on the fixed seat.

[0039] Reference Figures 1 to 3 The conveyor belt assembly includes a fixed part and a conveying part. The guide mechanism 3 includes a slide rail 31 mounted on the fixed part. A guide plate 32 is connected to the slide rail 31 by an electric slider to slide left and right. Multiple guide grooves with a left and right orientation are evenly opened from front to back on the guide plate 32.

[0040] Reference Figures 1 to 3 The traction mechanism 4 includes an L-shaped sliding frame 41 that is connected to the top wall of the base of the transmission mechanism 1 by being driven to slide left and right by an electric slider. Multiple clamping mechanical clamps 42 corresponding to the positions of the guide grooves are evenly installed on the horizontal section of the L-shaped sliding frame 41 from front to back.

[0041] To the left of the cutting mechanism 2 is a reel holder (not shown in the figure) for placing the welding strip reel and a welding strip straightening and feeding mechanism (not shown in the figure, a mature existing technology, and will not be described in detail here). The welding strip straightening and feeding mechanism straightens the welding strip and feeds it from left to right to the welding strip preparation area. The guide plate 32 slides on the slide rail 31 to the leftmost end. The L-shaped sliding frame 41 drives the clamping mechanical clamp 42 to slide to the left to the welding strip preparation area. The clamping mechanical clamp 42 clamps the corresponding end of the welding strip. The L-shaped sliding frame 41 drives the clamping mechanical clamp 42 to slide to the right. The clamping mechanical clamp 42 pulls the welding strip to the right for feeding. The welding strip passes between the upper and lower cutting shears 22. The output end of the hydraulic cylinder 21 drives the cutting shears 22 to move closer to each other. The upper and lower cutting shears 22 precisely cut the welding strip to the required length.

[0042] A suction cup feeding mechanism (not shown in the figure) for loading battery cells is installed behind the conveyor mechanism 1. When the welding strip is being cut, the suction cup feeding mechanism simultaneously loads the battery cells. The suction cup feeding mechanism picks up the battery cells to be welded, loads them, and moves them to the top wall of the transmission part of the conveyor mechanism 1 corresponding to the loading area.

[0043] After the welding strip is cut, the right end of the welding strip segment is clamped by the clamping mechanical clamp 42, and the left end of the welding strip segment separates from the welding strip roll. Then, the left end falls to the guide groove corresponding to the guide plate 32 below under gravity. The clamping mechanical clamp 42 continues to clamp and drive the welding strip segment to move to the right until it moves to the top of the loaded battery cell to be welded. At the same time, the guide plate 32 slides to the right on the slide rail 31 to approach the battery cell to be welded, ensuring continuous guidance when the welding strip segment moves.

[0044] After the welding strip is positioned directly above the cell to be welded, the guide plate 32 slides to the left on the slide rail 31 to release the guidance of the welding strip and prepare to support the next welding strip. After the clamping mechanical clamp 42 lays the welding strip on the main grid line of the cell, it releases the clamp on the right end of the welding strip and moves to the left through the L-shaped sliding frame 41 to prepare to clamp the next welding strip.

[0045] It should be noted that the guide groove on the guide plate 32 and the clamping mechanical clamp 42 are both corresponding to the position of the main grid line, and the solder strip operated in this invention is tinned copper strip.

[0046] The battery cells and solder strips to be welded are transported short distances from left to right to the pretreatment area via the transmission part of the conveying mechanism 1. After pretreatment by the pretreatment mechanism 5, the welding mechanism 6 uses infrared radiation of a specific wavelength emitted by an infrared lamp tube to penetrate the surface of the material and be absorbed by the solder strip and battery cell electrodes, which intensifies the internal molecular vibration and generates heat, thereby melting the tin layer on the solder strip and achieving metallurgical bonding. After gradually cooling down, the welding operation is completed.

[0047] After the front main grid line of the current cell is connected to the right end of the welding strip, the suction cup feeding mechanism continues to feed the next cell. The next cell falls onto the previous section of the welding strip, and the back main grid line of the next cell corresponds to the left end of the welding strip. In this way, two adjacent cells are connected through the welding strip section to form a complete current path, and multiple cells are connected in series in sequence.

[0048] Reference Figure 3 , Figure 7 and Figure 8 The pretreatment mechanism 5 includes a support frame 51 fixedly connected to the support base. A circular frame 52 is connected to the support frame 51 by an electric slider. An inverted L-shaped pre-compression component 53 facing forward and backward is detachably installed on the left bottom wall of the circular frame 52. The bottom wall of the inverted L-shaped pre-compression component 53 is chamfered. A pre-compression and preheating component 54 is also provided on the circular frame 52. An anti-deviation component 55 is provided on the pre-compression and preheating component 54.

[0049] Reference Figures 7 to 10 The pre-pressing and preheating assembly 54 includes a drive plate 543. The left and right inner walls of the U-shaped frame 52 are symmetrically provided with sliding grooves. The drive plate 543 is slidably connected to the two sliding grooves. A plurality of support plates 541 corresponding to the positions of the guide grooves are provided below the drive plate 543. The left and right side walls of the support plates 541 are fixedly connected to the inner wall of the U-shaped frame 52. The support plates 541 are provided with left and right symmetrical sliding grooves. The pre-pressing and preheating part 542 is connected to the sliding grooves by sliding up and down. The pre-pressing and preheating part 542 includes two rectangular blocks slidably connected to the corresponding sliding grooves and a pre-pressing and preheating component fixedly connected to the bottom wall of the two rectangular blocks. The top wall of the rectangular blocks is detachably fixedly connected to the drive plate 543. The pre-pressing and preheating component includes a flat plate fixedly connected to the bottom wall of the rectangular blocks and trapezoidal plates symmetrically fixedly connected to the bottom wall of the flat plate.

[0050] Reference Figures 7 to 10The support plate 541 has a three-slide groove. The anti-deviation component 55 includes an anti-deviation member 551 slidably connected to the three-slide groove. The anti-deviation member 551 includes a pushing block that is slidably connected to the three-slide groove by a spring (not shown in the figure) and an anti-deviation plate that is fixedly connected to the bottom wall of the pushing block. The anti-deviation plate is L-shaped. The top wall of the horizontal section of the anti-deviation plate has a groove that matches the trapezoidal plate of the pre-pressing and preheating part 542. The three-slide groove has drive blocks 552 that are symmetrically distributed on the left and right sides and are slidably connected to the left and right sides by an electric slider. The side of the drive block 552 away from the support plate 541 is formed by two inclined surfaces facing each other to form an arrow shape. The left and right sides of the pushing block close to the drive block 552 are inclined in a matching manner.

[0051] The specific processing steps in the pretreatment area are as follows: The battery cell to be welded and the welding strip are located directly below the retractable frame 52 in the pretreatment area. The retractable frame 52 moves downwards and closer to the battery cell by the drive of the electric slider. When moving downwards, the inverted L-shaped pre-compression component 53 first pre-compresses the middle part of the welding strip at the left end of the battery cell to be welded. The middle part of the welding strip changes from a horizontal state to a slightly curved state close to a Z-shape (e.g., ...). Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown in the figure, this eliminates the height difference and avoids stress on the middle of the solder strip when the solar cells are dropped during subsequent installation, ensuring the adhesion between the solar cells and the solder strip; at the same time, it can also absorb and compensate for the thermal stress generated by the thermal expansion and contraction of the solar cell material during the operation of the photovoltaic module, preventing microcracks in the solar cells.

[0052] After the inverted L-shaped pre-compression component 53 performs pre-compression, the return frame 52 stops moving downwards. The inverted L-shaped pre-compression component 53 drives the pre-compression and preheating assembly 54 and the anti-deviation assembly 55 to move to a suitable position. At this time, the bottom walls of the two anti-deviation plates are lightly attached to the top wall surface of the battery cell, and the pushing block is pushed by the arrow-shaped side wall of the driving block 552. The two anti-deviation plates move away from each other, and the main grid line of the battery cell is located between the corresponding two anti-deviation plates. At this time, the pre-compression and preheating component of the pre-compression and preheating part 542 is located directly above the corresponding main grid line of the battery cell, and the pre-compression and preheating component is close to but not in contact with the welding strip (e.g., Figure 11 (As shown).

[0053] Two opposing drive blocks 552 move away from each other via an electric slider. The arrow-shaped sidewalls of the drive blocks 552 release their pressure on the push blocks. The two push blocks are then reset by springs. The two anti-deviation plates move closer to each other. If the solder ribbon is misaligned or twisted, the two anti-deviation plates can correct it, preventing small or uneven contact areas between the cell main grid lines and the solder ribbon. This avoids additional resistance and hot spots caused by poor local contact, improves the alignment accuracy between the solder ribbon and the cell main grid lines, and ensures that the current collected from the cell main grid lines can be uniformly transmitted across the entire solder ribbon cross-section (e.g., ...). Figure 12 (As shown).

[0054] Driven by an electric slider, the drive plate 543 moves downward, causing the pre-pressing and preheating section 542 to slide downward on the support plate 541. The flat plate of the pre-pressing and preheating section applies appropriate pressure to the already corrected welding strip to prevent improper placement of the welding strip, which could lead to incomplete soldering between the welding strip and the battery cell. The trapezoidal plate of the pre-pressing and preheating section 542 enters the slot of the anti-deviation plate of the anti-deviation component 551. The anti-deviation component 551 and the pre-pressing and preheating section 542 together surround the welding strip from the front, top, and rear directions, enhancing the stability of the pre-pressing operation.

[0055] The bottom of the pre-pressing and preheating component is equipped with dotted infrared radiators (such as miniature infrared LED arrays or focused infrared lamps). When the drive board 543 drives the pre-pressing and preheating part 542 to reset, the infrared radiators accurately release energy at the overlapping position of the main grid line and the solder ribbon of the battery cell to perform preheating and pre-welding operations. The interface between the solder ribbon and the main grid line is preheated, which greatly reduces the heat load entering the welding area later, enabling faster welding speed and better consistency of the weld points, effectively preventing cold solder joints.

[0056] It should be noted that the pressure values ​​applied to the welding strip by the retractable frame 52 and the inverted L-shaped pre-compression component 53, the downward sliding distance of the drive plate 543, and the pressure values ​​applied to the welding strip by the pre-compression and preheating part 542 are all results obtained by those skilled in the art through multiple experiments, ensuring that no damage will be caused to the welding strip and the battery panel.

[0057] In this invention, the inverted L-shaped pre-compression component 53 in the pretreatment zone applies vertical pre-compression to the middle of the weld strip segment, forming a micro-bent structure resembling a Z-shape, effectively preventing stress. The anti-offset component 55 corrects and aligns the weld strip segment with the main busbar of the solar cell in the horizontal direction, ensuring that the current collected from the main busbar of the solar cell can be uniformly transmitted through the entire weld strip cross-section. The pre-compression and preheating component 54 applies vertical pre-compression and preheating treatment to the corrected weld strip segment, preventing improper placement of the weld strip and thus preventing incomplete welding between the weld strip and the solar cell, and also improving the welding speed. Although this invention adds a pretreatment mechanism 5 compared to the prior art, increasing production costs, the invention significantly improves welding quality and efficiency by finely adjusting the horizontal and vertical positions of the weld strip segment and preheating it. From a long-term development perspective, the increased equipment cost of this invention is negligible.

[0058] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0059] Furthermore, the terms "first," "second," "number one," and "number two" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "number one," or "number two" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0060] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0061] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A welding apparatus for photovoltaic panel processing, comprising a conveying mechanism, characterized in that, The conveying mechanism includes a base and a conveyor belt assembly mounted on the base. The conveyor belt assembly conveys the photovoltaic cells from left to right. The base has a welding strip preparation area, a feeding area, a pretreatment area and a welding area arranged from left to right. The welding strip preparation area is equipped with a cutting mechanism, the feeding area is equipped with a guiding mechanism and a traction mechanism, the pretreatment area is equipped with a pretreatment mechanism, and the welding area is equipped with a welding mechanism mounted on the base. The pretreatment mechanism includes a support frame fixedly connected to the support, a spiral frame connected to the support frame by sliding up and down, an inverted L-shaped pre-compression component facing forward and backward is detachably installed on the left bottom wall of the spiral frame, a pre-compression and preheating component is also provided on the spiral frame, and an anti-deviation component is provided on the pre-compression and preheating component. In the pretreatment zone, the middle part of the welding strip is pre-pressed vertically by an inverted L-shaped pre-pressing component, so that the welding strip forms an approximately Z-shaped structure. The anti-offset component corrects and aligns the welding strip with the main busbar of the battery cell in the horizontal direction. The pre-pressing and preheating component pre-presses and preheats the corrected welding strip in the vertical direction. Thus, the welding operation is carried out by coordinating the vertical pre-pressing, horizontal correction and alignment and preheating of the welding strip.

2. The welding apparatus for photovoltaic panel processing according to claim 1, characterized in that, The cutting mechanism includes a fixed base fixedly connected to the top wall of the base of the conveying mechanism. Cutting scissors are connected to the fixed base in a symmetrical sliding manner, and a hydraulic cylinder with its output end connected to the cutting scissors is installed on the fixed base.

3. The welding apparatus for photovoltaic panel processing according to claim 1, characterized in that, The conveyor belt assembly includes a fixed part and a conveying part. The guiding mechanism includes a slide rail mounted on the fixed part, and a guide plate is slidably connected to the slide rail from left to right. Multiple guide grooves with a left-right orientation are evenly opened on the guide plate from front to back.

4. The welding apparatus for photovoltaic panel processing according to claim 3, characterized in that, The traction mechanism includes an L-shaped sliding frame that is slidably connected to the top wall of the base of the conveying mechanism. Multiple clamping mechanical clamps corresponding to the positions of the guide grooves are evenly installed on the horizontal section of the L-shaped sliding frame from front to back.

5. The welding apparatus for photovoltaic panel processing according to claim 3, characterized in that, The pre-compression and preheating assembly includes a drive plate. The left and right inner walls of the U-shaped frame are symmetrically provided with sliding grooves. The drive plate is slidably connected to the two sliding grooves. Multiple support plates corresponding to the positions of the guide grooves are provided below the drive plate, and the left and right side walls of the support plates are fixedly connected to the inner wall of the U-shaped frame.

6. The welding apparatus for photovoltaic panel processing according to claim 5, characterized in that, The support plate has two symmetrical sliding grooves, and a pre-pressing and preheating part is connected to the sliding grooves by sliding up and down. The pre-pressing and preheating part includes two rectangular blocks that are slidably connected to the corresponding sliding grooves and a pre-pressing and preheating component that is fixedly connected to the bottom wall of the two rectangular blocks.

7. A welding apparatus for photovoltaic panel processing according to claim 6, characterized in that, The top wall of the rectangular block is detachably and fixedly connected to the drive plate. The pre-pressing and preheating component includes a flat plate fixedly connected to the bottom wall of the rectangular block and trapezoidal plates symmetrically fixedly connected to the bottom wall of the flat plate.

8. A welding apparatus for photovoltaic panel processing according to claim 6, characterized in that, The support plate is provided with a sliding groove three. The anti-deviation component includes an anti-deviation member that is slidably connected to the sliding groove three. The anti-deviation member includes a pushing block that is slidably connected to the sliding groove three and an anti-deviation plate that is fixedly connected to the bottom wall of the pushing block.

9. A welding apparatus for photovoltaic panel processing according to claim 8, characterized in that, The anti-deviation plate is L-shaped, and the top wall of the horizontal section of the anti-deviation plate is provided with a groove that matches the trapezoidal plate of the pre-pressing and preheating section. The sliding groove three has drive blocks that are symmetrically distributed on the left and right sides and are connected by sliding.

10. A welding apparatus for photovoltaic panel processing according to claim 9, characterized in that, The drive block on the side away from the support plate has two opposing inclined surfaces forming an arrow shape, and the push block on the left and right sides near the drive block has a matching inclined shape.

Images