Battery string repair device

Abstract

The application provides a battery string repair device, which comprises a repair platform, a replacement battery piece preparation mechanism, a replacement battery piece feeding mechanism, a first welding strip shearing mechanism, a first welding strip clamping mechanism and a welding mechanism. The repair platform is used for carrying a battery string to be repaired. The first welding strip shearing mechanism is used for shearing the welding strip between a defective battery piece and an adjacent battery piece in the battery string to be repaired. The replacement battery piece preparation mechanism is used for processing an initial battery piece into a replacement battery piece. The replacement battery piece feeding mechanism is used for feeding the replacement battery piece on the replacement battery piece preparation mechanism to the repair platform. The first welding strip clamping mechanism is used for clamping the welding strip on the replacement battery piece and the welding strip to be overlapped on the adjacent battery piece. The welding mechanism is used for welding the clamped welding strip on the replacement battery piece and the welding strip to be overlapped on the adjacent battery piece. The application realizes automatic preparation of the replacement battery piece and automatic feeding of the replacement battery piece to the repair position, thereby improving the repair efficiency.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing, specifically a battery string repair device. Background Technology

[0002] When defective cells are found in a battery string, the string can be repaired. Figure 1 Taking a battery string as an example, the connecting solder strip between the defective battery cell 300 and its adjacent battery cell 400 is cut off. The location of the cut solder strip is as follows: Figure 1 The defective battery cell 300 is removed from the battery string by marking the "×" position. The replacement battery cell 500 with solder ribbon is then placed in the empty position after the defective battery cell 300 is removed, and the solder ribbon on the replacement battery cell 500 is lap-welded with the solder ribbon on the adjacent battery cell 400.

[0003] Existing battery string repair devices categorize replacement cells into head, middle, and tail replacement cells based on the position of the defective cell within the battery string (head, middle, or tail). The solder strips extending from the cell on these three types of replacement cells may not differ in length. For example... Figure 2 The tail replacement cell shown in (a) has solder strips on both its upper and lower surfaces extending beyond the cell by a certain length. Figure 2 (b) shows a middle replacement cell where the solder strips on the upper surface do not need to extend beyond the cell, while the solder strips on the lower surface need to extend beyond the cell by a certain length.

[0004] The pre-prepared initial solar cell has solder strips on both its upper and lower surfaces extending out of the cell at a uniform length. Therefore, when the solder strip extension length on both sides of the initial solar cell cannot meet the requirements of the replacement solar cell, it is necessary to first cut the solder strips on the initial solar cell to obtain the required type of replacement solar cell, and then load the replacement solar cell to the repair location.

[0005] Traditional battery string repair equipment cannot cut the solder strips on the initial battery cells. The current solution is to manually cut the solder strips on the initial battery cells offline to obtain the required type of replacement battery cell, and then manually feed the replacement battery cell to the battery string repair equipment. This has a low degree of automation, resulting in low battery string repair efficiency. Summary of the Invention

[0006] To address the aforementioned technical problems, this application provides a battery string repair device, the detailed technical solution of which is as follows: A battery string repair device includes a repair platform, a replacement cell preparation mechanism, a replacement cell loading mechanism, a first solder strip cutting mechanism, a first solder strip clamping mechanism, and a welding mechanism, wherein: The repair platform is used to carry battery strings to be repaired, which include at least the first type of battery strings to be repaired with replacement cells. The first welding strip cutting mechanism is located on one side of the rework platform and is used to cut the welding strip between the defective battery cell that needs to be replaced and the adjacent battery cell in the first type of battery string to be reworked. The adjacent battery cell includes at least one of the first side adjacent battery cell and the second side adjacent battery cell. A replacement cell preparation mechanism is used to process an initial cell into a replacement cell. The upper surface of the initial cell is connected to a first side solder strip extending outward from a first side of the initial cell, and the lower surface of the initial cell is connected to a second side solder strip extending outward from a second side of the initial cell. The replacement cell preparation mechanism is configured to cut at least one of the first side solder strip and the second side solder strip to obtain a replacement cell. The replacement cell includes at least one of a head replacement cell, a middle replacement cell, and a tail replacement cell. The replacement cell feeding mechanism is used to pick up replacement cells from the replacement cell preparation mechanism and feed the picked-up replacement cells to the defect location in the first type of battery string to be repaired on the repair platform. The defect location is the empty position in the first type of battery string to be repaired after the defective cells are removed. The first welding strip clamping mechanism is disposed on one side of the rework platform and is used to clamp the first side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the first side adjacent cell, and to clamp the second side welding strip of the replacement cell located at the defect location together with the welding strip to be overlapped on the second side adjacent cell. The welding mechanism is located on one side of the rework platform and is used to weld the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and to weld the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0007] By coordinating the replacement cell loading mechanism, the first solder strip cutting mechanism, the first solder strip clamping mechanism, and the welding mechanism, the battery string repair device of this application enables the replacement and repair of defective cells in a battery string. Specifically, by setting up a replacement cell preparation mechanism and a replacement cell loading mechanism, the battery string repair device of this application automatically cuts the solder strips on the initial cells to obtain the required type of replacement cell, and automatically loads the replacement cell to the repair location, thereby improving the battery string repair efficiency.

[0008] In some embodiments, the replacement cell fabrication mechanism includes a feeding mechanism, a transfer mechanism, a support platform, a second solder ribbon clamping mechanism, a second solder ribbon cutting mechanism, and a buffer platform, wherein: the feeding mechanism is used to supply initial cells; the transfer mechanism is used to pick up the initial cells from the feeding mechanism and transfer the initial cells to the support platform; the support platform is used to adsorb and fix the initial cells; the second solder ribbon clamping mechanism is located on one side of the support platform and is used to clamp the end of the solder ribbon on the initial cells near the second solder ribbon clamping mechanism; the second solder ribbon cutting mechanism is used to cut the end of the solder ribbon on the clamped initial cells to obtain replacement cells; the transfer mechanism is also used to transfer the replacement cells to the buffer platform; and the replacement cell loading mechanism is used to pick up the replacement cells from the buffer platform.

[0009] Through the cooperation of the feeding mechanism, the transfer mechanism, the support platform, the second welding strip clamping mechanism, the second welding strip cutting mechanism, and the buffer platform, the replacement cell preparation mechanism realizes the automatic cutting of the welding strip end on the initial cell to automatically prepare a replacement cell for repair. It can also buffer the replacement cell on the buffer platform, so that the replacement cell feeding mechanism can obtain the replacement cell from the buffer platform, thereby improving the feeding efficiency of the replacement cell and thus improving the repair efficiency of the battery string.

[0010] In some embodiments, the second ribbon shearing mechanism is also used to shear the end of the ribbon on the side of the initial cell away from the second ribbon clamping mechanism.

[0011] Depending on the type of replacement cell to be prepared, when it is necessary to cut the solder strips on both sides of the initial cell, a second solder strip cutting mechanism can be used to cut the solder strips on the other side of the initial cell again. The structure is simple and the cost is low.

[0012] In some embodiments, the feeding mechanism includes a basket conveying mechanism, a lifting mechanism, a docking conveying mechanism, and a picking mechanism, wherein: the basket conveying mechanism is disposed below the picking mechanism; the lifting mechanism is disposed between the basket conveying mechanism and the picking mechanism; and the docking conveying mechanism is connected to a movable part of the lifting mechanism; the lifting mechanism is configured to drive the docking conveying mechanism to descend to a basket changing station, thereby docking the docking conveying mechanism with the basket conveying mechanism; the basket conveying mechanism is configured to convey a basket filled with initial solar cells to the docking conveying mechanism or to receive an empty basket output by the docking conveying mechanism; the lifting mechanism is further configured to drive the docking conveying mechanism to rise to a cell picking station, such that the initial solar cells at the bottom of the basket are higher than the picking mechanism; the picking mechanism is configured to extend into the basket, and the lifting mechanism is further configured to drive the docking conveying mechanism to descend, such that the initial solar cells at the bottom of the basket fall onto the picking mechanism; the picking mechanism is further configured to remove the initial solar cells from the basket; and a transfer mechanism picks up the initial solar cells from the picking mechanism.

[0013] Through the coordination of the basket conveying mechanism, lifting mechanism, docking conveying mechanism and picking mechanism, the feeding mechanism realizes the automatic removal of the initial solar cells from the basket, thereby realizing the automatic feeding of the initial solar cells.

[0014] In some embodiments, the feeding mechanism further includes a straightening mechanism disposed on the side of the picking mechanism, the straightening mechanism being used to correct the position of the initial battery cell being taken out of the basket.

[0015] By setting a straightening mechanism on the side of the material picking mechanism, the position of the initial battery cell being picked up is corrected, which ultimately ensures that the transfer mechanism can smoothly pick up the initial battery cell from the material picking mechanism.

[0016] In some embodiments, the material handling mechanism includes a material handling drive unit and a material handling plate, wherein the material handling plate is connected to the drive end of the material handling drive unit. When the material handling drive unit drives the material handling plate to extend into the basket, the initial battery cell located at the bottom of the basket falls onto the material handling plate and is adsorbed by the material handling plate. When the material handling drive unit drives the material handling plate to withdraw from the basket, the initial battery cell is removed from the basket.

[0017] A simple material handling mechanism is provided, which drives the material handling blade to take out the initial battery cell from the material basket through the material handling drive unit. It has a fast material handling speed and can prevent the initial battery cell from slipping out.

[0018] In some embodiments, the transfer mechanism includes a first drive module and a first adsorption member connected to the drive end of the first drive module, wherein the first adsorption member is used to adsorb an initial battery cell or a replacement battery cell, the first drive module is used to drive the first adsorption member to translate and lift, and to drive the first adsorption member to rotate in a horizontal plane.

[0019] The first drive module drives the first adsorption component to translate and move up and down, thereby causing the first adsorption component to adsorb the initial or replacement battery cell and to transfer the initial or replacement battery cell. When the first drive module drives the first adsorption component to rotate, the angle of the initial or replacement battery cell can be adjusted.

[0020] In some embodiments, the second solder strip clamping mechanism includes a second drive module, a first mounting bracket, and a clamping assembly, wherein: the first mounting bracket is connected to the drive end of the second drive module, and the clamping assembly is disposed on the first mounting bracket; the second drive module is used to drive the clamping assembly to move laterally to approach or move away from the support platform, and the clamping assembly is used to clamp the end of the first side solder strip or the end of the second side solder strip on the initial battery cell; the second drive module is also used to drive the clamping assembly to move up and down, so that a shearing angle is formed between the end of the clamped first side solder strip or the end of the second side solder strip and the initial battery cell.

[0021] The second drive module drives the clamping assembly to move laterally, ensuring that the clamping assembly can be aligned with the end of the first-side solder strip or the end of the second-side solder strip. The second drive module drives the clamping assembly to move up and down, so that the end of the clamped first-side solder strip or the end of the second-side solder strip forms a shearing angle with the initial battery cell, ensuring that the second solder strip cutting mechanism can smoothly cut the end of the first-side solder strip or the end of the second-side solder strip.

[0022] In some embodiments, the second welding strip shearing mechanism includes a third drive module, a second mounting bracket, a fixed cutter, a movable cutter, and a cutter drive member, wherein: the second mounting bracket is connected to the drive end of the third drive module; the fixed cutter is fixedly connected to the second mounting bracket, and a plurality of hooks are arranged side by side at intervals on the lower edge of the fixed cutter, and a support slope for supporting the welding strip is formed on the hook-shaped part of the hook, and a fixed blade is formed at the upper end of the support slope; the movable cutter is slidably connected to the second mounting bracket and fits against the fixed cutter, and a movable blade that cooperates with each fixed blade is formed on the lower edge of the movable cutter; the drive end of the cutter drive member is connected to the movable cutter, and the cutter drive member is used to drive the movable cutter to slide relative to the fixed cutter, so that the movable cutter switches between a clearance position and a shearing position; when the movable cutter slides to the clearance position, a gap is formed between the movable blade and each fixed blade for the welding strip to pass through; when the movable cutter slides to the shearing position, the movable blade cooperates with each fixed blade to shear the welding strip passing through the gap.

[0023] By configuring the second welding strip shearing mechanism, it is able to shear flat welding strips. The hook-shaped blade extends beneath the welding strip, and the inclined support surface supports the tilted flat welding strip. The fixed cutter shears the welding strip along its thickness, ensuring that the flat welding strip retains its original shape after shearing, without twisting, and that the cut surface is smooth and burr-free. This shearing assembly is also suitable for shearing round welding strips.

[0024] In some embodiments, the replacement cell fabrication mechanism further includes a first inspection mechanism; the transfer mechanism is configured to pick up an initial cell from the feeding mechanism and transfer the picked-up initial cell to the first inspection mechanism; the first inspection mechanism is at least configured to perform position detection and defect detection on the initial cell to obtain position information and quality information of the initial cell; the transfer mechanism is further configured to transfer the initial cell from the first inspection mechanism to a carrier platform or a buffer platform, and the transfer mechanism is further configured to straighten the initial cell based on the position information of the initial cell during the transfer process.

[0025] By setting up a first detection mechanism, the position and quality of the initial solar cells are detected. The transfer mechanism can then transfer the initial solar cells to a suitable position based on the detection results. At the same time, the position of the initial solar cells can be adjusted based on the detection results for subsequent use.

[0026] In some embodiments, the first inspection agency includes at least one of a visual inspection agency and an EL inspection agency.

[0027] It enables the detection of internal and external defects in initial solar cells, preventing defective initial solar cells from flowing into subsequent processes.

[0028] In some embodiments, the replacement cell preparation mechanism further includes a second detection mechanism, a buffer stage is disposed on a fourth drive module, the fourth drive module is used to drive the buffer stage to translate the replacement cell to be detected to the second detection mechanism, the second detection mechanism is configured to perform at least one of position detection and defect detection on the replacement cell; the replacement cell loading mechanism picks up the replacement cell after it has been detected by the second detection mechanism from the buffer stage.

[0029] It enables the location detection and defect detection of the completed replacement cells, preventing defective replacement cells from flowing into the subsequent rework process.

[0030] In some embodiments, the buffer station includes a first buffer station, a second buffer station, and a third buffer station arranged side by side, wherein: the first buffer station is used to buffer the head replacement battery cell transported by the transfer mechanism, the head replacement battery cell being used to replace the defective battery cell located at the head of the battery string to be repaired; the second buffer station is used to buffer the tail replacement battery cell transported by the transfer mechanism, the tail replacement battery cell being used to replace the defective battery cell located at the tail of the battery string to be repaired; and the third buffer station is used to buffer the middle replacement battery cell transported by the transfer mechanism, the middle replacement battery cell being used to replace the defective battery cell located between the head battery cell and the tail battery cell in the battery string to be repaired.

[0031] The system implements a classification and caching mechanism for three types of replacement cells, enabling the replacement cell loading mechanism to accurately obtain the required type of replacement cell based on the subsequent repair needs.

[0032] In some embodiments, the replacement cell loading mechanism includes a fifth drive module, a third mounting bracket, and a second adsorption member, wherein: the third mounting bracket is connected to the drive end of the fifth drive module, and the second adsorption member is disposed on the third mounting bracket; the fifth drive module is used to drive the second adsorption member to translate and lift, so as to drive the second adsorption member to pick up the replacement cell from the replacement cell preparation mechanism and load the replacement cell onto the rework platform.

[0033] A simple replacement battery cell loading mechanism is provided, which drives the second adsorption component to translate and lift through the fifth drive module, so as to pick up the replacement battery cell from the replacement battery cell preparation mechanism and load the replacement battery cell onto the rework platform.

[0034] In some embodiments, the rework platform includes a mounting base, an intermediate welding station, a first side welding station, and a second side welding station, wherein: the intermediate welding station is vertically flip-mounted on the mounting base and is used to carry and absorb defective battery cells and replacement battery cells in the battery string to be reworked; the first side welding station is movably mounted on the mounting base and is used to carry the battery cell on the first side of the defective battery cell and is at least able to absorb the battery cell adjacent to the first side; the first side welding station is configured to be able to translate toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding station; the second side welding station is movably mounted on the mounting base and is used to carry the battery cell on the second side of the defective battery cell and is at least able to absorb the battery cell adjacent to the second side; the second side welding station is configured to be able to translate toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding station.

[0035] Initially, the intermediate welding station, the first side welding station, and the second side welding station are horizontally aligned and vertically connected, forming a continuous horizontal welding platform. For the first type of battery string to be repaired, the string is first placed on this horizontal welding platform, with the defective battery cell adsorbed onto the intermediate welding station. The adjacent battery cells on both sides of the defective cell are adsorbed onto the first and second side welding stations, respectively. Next, the first and second side welding stations are raised or lowered to vertically offset them from the intermediate welding station. At this point, the first ribbon cutting mechanism can easily cut the ribbon between the defective battery cell and the adjacent battery cell. After the ribbon is cut, the first and second side welding stations are moved away, and then the intermediate welding station is flipped, thus removing the disassembled defective battery cell from the intermediate welding station. That is, by configuring the rework platform, it can work with the first welding strip shearing mechanism to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0036] In some embodiments, the rework platform further includes a cleaning mechanism disposed on the side of the intermediate soldering station; the cleaning mechanism is configured to remove impurities from the intermediate soldering station after the defective cell is removed from the intermediate soldering station.

[0037] When defective cells are removed from the first type of rework battery string, solder debris, cell fragments, and other impurities fall onto the intermediate soldering station. If not cleaned promptly, this will affect the quality of subsequent rework. A cleaning mechanism located on the side of the intermediate soldering station enables timely removal of these impurities.

[0038] In some embodiments, the first welding strip clamping mechanism includes a sixth drive module, a fourth mounting bracket, an opening and closing drive mechanism, a first guide mounting seat, a second guide mounting seat, an elastic clamping mechanism, and a plurality of paired first clamps and second clamps, wherein: the fourth mounting bracket is connected to the drive end of the sixth drive module, and the sixth drive module is used to drive the fourth mounting bracket to move; the opening and closing drive mechanism is mounted on the fourth mounting bracket, and the first guide mounting seat and the second guide mounting seat are both connected to the drive end of the opening and closing drive mechanism; the first clamps are arranged side by side, and each first clamp is connected to the first guide mounting seat vertically via a first floating component; the second clamps are arranged side by side, and each second clamp is connected to the second guide mounting seat vertically via a second floating component, and is rotatable relative to the second guide mounting seat in a horizontal plane; the elastic clamping mechanism is mounted on the second guide mounting seat. The elastic clamping mechanism includes several elastic clamping components corresponding one-to-one with the second clamps. A reference block is provided on the second guide mounting base for each second clamp. The elastic clamping components are used to elastically push the corresponding second clamp to rotate in the horizontal plane and abut against the corresponding reference block, so that the clamping end of each second clamp is aligned with the clamping end of the corresponding first clamp. The elastic clamping components can also elastically deform when subjected to the reverse force of the corresponding second clamp. The opening and closing drive mechanism is used to drive the first and second guide mounting bases to move towards the center after the clamping ends of the second clamps are aligned with the clamping ends of the corresponding first clamps, so that the clamping ends of the second clamps cooperate with the clamping ends of the corresponding first clamps to clamp the welding strip. The opening and closing drive mechanism is also used to drive the first and second guide mounting bases to separate to both sides, so that the clamping ends of the second clamps release the welding strip from the clamping ends of the corresponding first clamps.

[0039] A first welding strip clamping mechanism is provided, in which each first clamp and each second clamp can be vertically and floatingly connected to a corresponding guide mounting base. This configuration allows the first and second clamps to adaptively adjust their relative height position after descending and contacting the battery cell, ensuring alignment in the vertical direction. Simultaneously, by incorporating an elastic clamping mechanism and a reference block, the first welding strip clamping mechanism can also adaptively adjust the angle of the clamping end of the second clamp in the horizontal direction, thereby ensuring that the clamping end of the second clamp is aligned before clamping the welding strip. When aligned with the clamping end of the first chuck, the gap between the two solder strips after clamping can be reduced or eliminated if there are no solder balls on the solder strips. On the other hand, even if there are solder balls on the solder strips, the solder balls can force the second chuck to rotate after clamping, causing the elastic clamping component to deform elastically. When the solder balls remelt during the soldering process, the second chuck can rotate back to the reference position under the action of the elastic clamping component, thereby reducing or eliminating the gap between the two solder strips. Ultimately, this allows the two solder strips to smoothly climb the solder and achieve overlap during the soldering process, ensuring the quality of the overlap soldering.

[0040] In some embodiments, the first floating assembly includes a first guide post, a first spring, a first chuck mounting base, and a floating guide assembly, wherein: the upper and lower ends of the first guide post are respectively fixedly connected to the first guide mounting base; the first chuck mounting base is slidably fitted onto the first guide post; the first spring is fitted onto the first guide post, with the upper end of the first spring abutting against the first guide mounting base and the lower end of the first spring abutting against the first chuck mounting base; the first chuck is mounted on the first chuck mounting base, with the clamping end of the first chuck extending downwards from the first chuck mounting base; and the floating guide assembly is disposed between the first chuck mounting base and the first guide mounting base to restrict the first chuck mounting base to move vertically.

[0041] A simple first floating assembly is provided, which achieves a floating connection between the first chuck mounting base and the first guide mounting base through the extension and retraction adjustment of the first spring. This allows the first chuck to adaptively adjust its relative position in the height direction after descending and contacting the battery cell. Furthermore, by setting a floating guide assembly, the first chuck can only float up and down along the first guide post and cannot rotate around it, ensuring that the first chuck will not deflect after floating in the height direction. Ultimately, this ensures that when the second chuck rests against the reference block, the clamping end of the second chuck can be aligned with the clamping end of the first chuck.

[0042] In some embodiments, the second floating assembly includes a second guide post, a second spring, and a second chuck mounting base, wherein: the upper and lower ends of the second guide post are respectively fixedly connected to the second guide mounting base; the second chuck mounting base is slidably fitted onto the second guide post; the second spring is fitted onto the second guide post, with the upper end of the second spring abutting against the second guide mounting base and the lower end of the second spring abutting against the second chuck mounting base; the second chuck is mounted on the second chuck mounting base, and the clamping end of the second chuck extends downward out of the second chuck mounting base.

[0043] A simple second floating assembly is provided, which achieves a floating connection between the second chuck mounting base and the second guide mounting base through the extension and retraction adjustment of the second spring. This allows the second chuck to achieve adaptive adjustment of its relative position in the height direction after descending and contacting the battery cell. Furthermore, the second chuck mounting base can rotate around the second guide post after being subjected to force, thereby driving the second chuck to rotate in the horizontal plane.

[0044] In some embodiments, the elastic clamping assembly includes a fixed frame and a compression spring, wherein the fixed frame is disposed on a second guide mounting seat, a first end of the compression spring elastically abuts against the fixed frame, and a second end of the compression spring elastically abuts against a second chuck mounting seat; the compression spring elastically pushes the second chuck mounting seat to rotate in the horizontal plane, so as to drive the second chuck to abut against the corresponding reference block.

[0045] The compression spring pushes the second chuck mounting seat with its own elastic force, thereby keeping the second chuck against the corresponding reference block.

[0046] In some embodiments, the battery string repair device further includes a first coating mechanism configured to be movable to the repair platform for applying flux to the overlap portion of the first-side solder strip of the replacement battery cell and the solder strip to be overlapped on the first-side adjacent battery cell, and for applying flux to the overlap portion of the second-side solder strip of the replacement battery cell and the solder strip to be overlapped on the second-side adjacent battery cell.

[0047] Before welding the first-side solder strip of the replacement battery cell to the solder strip to be overlapped on the first-side adjacent battery cell, the first coating mechanism applies flux to the overlap area of ​​the first-side solder strip of the replacement battery cell and the solder strip to be overlapped on the first-side adjacent battery cell. This ensures the welding quality of the first-side solder strip of the replacement battery cell to the solder strip to be overlapped on the first-side adjacent battery cell. Similarly, before welding the second-side solder strip of the replacement battery cell to the solder strip to be overlapped on the second-side adjacent battery cell, the first coating mechanism applies flux to the overlap area of ​​the second-side solder strip of the replacement battery cell and the solder strip to be overlapped on the second-side adjacent battery cell. This ensures the welding quality of the second-side solder strip of the replacement battery cell to the solder strip to be overlapped on the second-side adjacent battery cell.

[0048] In some embodiments, the first coating mechanism includes a coating driving assembly and a plurality of first coating pens, wherein: the plurality of first coating pens are arranged side by side at the driving end of the coating driving assembly, and each first coating pen is connected to the driving end of the coating driving assembly vertically and horizontally via an elastic buffer; each first coating pen is used to apply flux to a part to be overlapped; the coating driving assembly is used to drive the plurality of first coating pens to translate and move up and down, so that each first coating pen contacts or detaches from the corresponding solder strip; the battery string repair device also includes a first liquid replenishment mechanism disposed on one side of the repair platform, the first liquid replenishment mechanism being used to replenish flux to each first coating pen.

[0049] The first coating mechanism uses coating pens to apply flux to the solder ribbons, enabling spot coating. Compared to spraying, this method offers higher coating precision and reduces flux usage. Furthermore, each coating pen can be extended and retracted to the drive end of the coating drive assembly, ensuring that each pen contacts its corresponding solder ribbon upon descent, guaranteeing effective flux coating for all solder ribbons.

[0050] In some embodiments, the welding mechanism is a laser welding mechanism, which is positioned above the rework platform.

[0051] Laser welding mechanisms perform rework welding in a non-contact manner, enabling targeted welding of overlapping areas. The welding temperature is controllable, resulting in minimal thermal impact on the solar cells and high welding quality.

[0052] In some embodiments, the battery string to be repaired also includes a second type of battery string to be repaired by filling in the cold solder joints; the welding mechanism is also used to weld the cold solder joints on at least one of the upper and lower surfaces of the second type of battery string to be repaired on the repair platform, so as to re-weld the cold solder joints onto the battery cells.

[0053] It enables the repair of the second type of battery strings with poor soldering defects by filling in the poor soldering.

[0054] In some embodiments, the battery string repair device further includes a second coating mechanism configured to be movable to the repair platform for applying flux to the poor solder joints on the upper surface of the second type of battery string to be repaired, which is supported on the repair platform.

[0055] By setting up a second coating mechanism, flux was applied to the poor solder joints on the upper surface of the second type of battery strings to be repaired, thereby improving the quality of repairing poor solder joints in the second type of battery strings to be repaired.

[0056] In some embodiments, the second coating mechanism includes a seventh drive module, a fifth mounting bracket, and a plurality of coating components, wherein: the fifth mounting bracket is connected to the drive end of the seventh drive module; the plurality of coating components are arranged side by side on the fifth mounting bracket, and each coating component is capable of applying flux to a solder strip; each coating component includes a drive part and a second coating pen, the drive part is connected to the fifth mounting bracket, the second coating pen is connected to the drive end of the drive part, and the drive part is at least used to drive the second coating pen to move up and down, so that the second coating pen contacts or detaches from the corresponding solder strip.

[0057] The second coating mechanism uses coating pens to apply flux to the solder strips, achieving spot coating. Compared to spraying, this method offers higher coating precision and saves more flux. Each coating pen is independently driven by its own drive unit, allowing individual control of the pen corresponding to the solder strip with a cold solder joint to descend and apply targeted coating when it moves above the target solder strip, while the other pens remain away from their corresponding solder strips. This achieves precise spot coating of the cold solder strip, avoiding contamination of other solder strip areas and further conserving flux.

[0058] In some embodiments, the battery string repair device further includes a feeding gripper and a feeding inspection mechanism; the feeding inspection mechanism is used to detect the defect type and defect location of the battery string to be repaired; the feeding gripper is used to pick up the battery string to be repaired from the feeding inspection mechanism and feed the battery string to be repaired onto the repair platform.

[0059] By setting up an infeed inspection mechanism, the defect type and location of the battery strings to be repaired can be detected. By setting up a loading gripper, the battery strings to be repaired after inspection can be automatically loaded onto the repair platform.

[0060] In some embodiments, the feeding inspection mechanism includes a feeding mechanism, a first gripper, a sizing table, a first string inspection mechanism, a second gripper, a feeding EL inspection mechanism, a second string inspection mechanism, a transfer table, and a discharge box, wherein: the feeding mechanism is used to supply battery strings; the first gripper is used to transport the battery strings supplied by the feeding mechanism to the sizing table, the sizing table is used to size the battery strings; the first string inspection mechanism is disposed above the sizing table and is used to inspect appearance defects on the upper surface of the battery strings; the second gripper is used to transport the battery strings from the sizing table to above the feeding EL inspection mechanism and the second string inspection mechanism, wherein the feeding EL inspection mechanism is used to perform EL inspection on the battery strings, and the second string inspection mechanism is used to inspect appearance defects on the lower surface of the battery strings; The second gripper is also used to place the battery strings that have been identified as needing repair after inspection onto the transfer platform, and to place the battery strings that have been identified as not being able to be repaired after inspection into the discharge box; the loading gripper picks up the battery strings that need to be repaired from the transfer platform.

[0061] By setting up the incoming inspection mechanism, the mechanism can detect poor soldering, internal defects, and external defects in battery strings, thereby determining whether a battery string is a reworkable or non-reworkable string, as well as the type and location of defects in the reworkable string. In addition, the incoming inspection mechanism can place the identified reworkable battery strings on the transfer platform and place non-reworkable battery strings into the discharge box.

[0062] In some embodiments, the battery string repair device further includes a third coating mechanism located on the moving path of the loading gripper. The third coating mechanism is used to apply flux to the poor solder joints on the lower surface of the second type of battery string to be repaired on the loading gripper.

[0063] By setting up a third coating mechanism, flux was applied to the poor solder joints on the lower surface of the second type of battery strings to be repaired, thereby improving the quality of repairing poor solder joints in the second type of battery strings to be repaired.

[0064] In some embodiments, the battery string repair device further includes a clamping mechanism disposed on one side of the repair platform. The clamping mechanism is used to press the solder strips with poor solder joints in the second type of battery string to be repaired onto the corresponding battery cells.

[0065] The clamping mechanism presses the solder strips with poor solder joints in the second type of battery string to be repaired onto the corresponding battery cells, ensuring that the solder strips with poor solder joints can be re-welded to the corresponding battery cells.

[0066] In some embodiments, the battery string rework device includes a feeding gripper, an output EL detection mechanism, a receiving mechanism, an NG (Not Good) box, and a buffer box, wherein: the feeding gripper is used to transfer the reworked battery strings from the rework platform to above the output EL detection mechanism; the output EL detection mechanism is used to detect the reworked battery strings to determine the type of the reworked battery strings, which includes reworked qualified battery strings, reworked unqualified battery strings that cannot be reworked a second time, and reworked unqualified battery strings that can be reworked a second time; the feeding gripper is also used to send the reworked qualified battery strings to the receiving mechanism, send the reworked unqualified battery strings that cannot be reworked a second time to the NG box, send the reworked unqualified battery strings that can be reworked a second time to the buffer box, and send the reworked unqualified battery strings that can be reworked a second time from the buffer box to the rework platform.

[0067] By setting up a feeding gripper, an output EL detection mechanism, a receiving mechanism, an NG material box, and a buffer material box, the system enables the detection of repaired battery strings to determine their type. In addition, it also enables the classification and receiving of three different types of repaired battery strings. In particular, battery strings that fail the repair and can be re-repaired are sent back to the repair platform for re-repair. Attached Figure Description

[0068] Figure 1 This is a diagram illustrating the repair of a battery string. Figure 2 These are schematic diagrams of the structures of two alternative battery cells; Figure 3 This is a schematic diagram of the battery string repair device according to an embodiment of this application from one perspective. Figure 4 This is a schematic diagram of the battery string repair device according to an embodiment of this application from another perspective. Figure 5 for Figure 4 A magnified view of a portion of region A; Figure 6 for Figure 4 A magnified view of a portion of region B; Figure 7 for Figure 4 A magnified view of a portion of region C; Figure 8 This is a schematic diagram of the feeding mechanism in the embodiments of this application; Figure 9 This is a schematic diagram of the transfer mechanism in the embodiments of this application; Figure 10 This is a schematic diagram of the structure of the support platform, the second welding strip clamping mechanism and the second welding strip shearing mechanism in the embodiments of this application; Figure 11This is a schematic diagram of the second welding strip clamping mechanism in an embodiment of this application from one perspective; Figure 12 This is a schematic diagram of the second welding strip clamping mechanism in this application embodiment from another perspective; Figure 13 for Figure 12 AA section view; Figure 14 This is a schematic diagram of the structure of the second welding strip shearing mechanism in the embodiments of this application; Figure 15 This is a schematic diagram of the structure of the replacement battery cell feeding mechanism in the embodiments of this application; Figure 16 This is a schematic diagram of the structure of components such as the rework platform, the first welding strip cutting mechanism, and the first welding strip clamping mechanism in the embodiments of this application; Figure 17 This is a schematic diagram of the structure of the first welding strip clamping mechanism in the embodiment of this application from a first perspective; Figure 18 This is a schematic diagram of the first welding strip clamping mechanism in the embodiments of this application from a second perspective; Figure 19 This is a schematic diagram of the first welding strip clamping mechanism in the embodiment of this application from a third perspective; Figure 20 This is a schematic diagram of the first welding strip clamping mechanism in the embodiments of this application from a fourth perspective; Figure 21 for Figure 20 A magnified view of region D in the image; Figure 22 This is a schematic diagram of the structure of the first and second clamps in the embodiments of this application; Figure 23 This is a schematic diagram of the first coating mechanism in an embodiment of this application from a first perspective; Figure 24 This is a schematic diagram of the first coating mechanism in an embodiment of this application from a second perspective; Figure 25 for Figure 24 BB section view; Figure 26 This is a schematic diagram of the structure of the second coating mechanism in an embodiment of this application; Figures 1 to 26 Includes: Repair Platform 1: Mounting base 11, intermediate soldering station 12, first side soldering station 13, second side soldering station 14, flip drive Mechanism 15, First side welding station drive mechanism 16, Second side welding station drive mechanism 17; Replacement of cell fabrication mechanism 2: Material feeding mechanism 21: basket conveying mechanism 211, empty basket conveying unit 2111, full basket conveying unit 2112, Transverse drive unit; 2113, Lifting mechanism; 212, Docking and conveying mechanism; 213, Material handling mechanism; 214. Material handling drive unit 2141, material handling plate 2142, and straightening mechanism 215; Transfer mechanism 22: First drive module 221, first adsorption component 222, X-axis drive module 2211 Y-axis drive module 2212, Z-axis drive module 2213, and rotary drive module 2214; Support platform 23; Second welding strip clamping mechanism 24: Second drive module 241, first mounting bracket 242, clamping assembly Component 243, pressure plate 2431, rotating shaft 2432, gripper 2433, gripper drive component 2434; Second welding strip shearing mechanism 25: Second mounting bracket 251, fixed cutter 252, movable cutter 253. Cutting blade drive unit; 254. Hook blade; 255. Cache stage 26: First cache stage 261, second cache stage 262, third cache stage 263; First testing agency 27, second testing agency 28; Replacement of cell feeding mechanism 3: Fifth drive module 31, third mounting bracket 32, second adsorption component 33; First strip shearing mechanism 4: First welding strip clamping mechanism 5: Fourth mounting bracket 51; Opening and closing drive mechanism 52; First guide mounting base 53; Second guide mounting base 54; Elastic clamping mechanism 55: elastic clamping assembly 551, fixing frame 5511, compression spring 5512; First clamp 56: First bottom surface 561, second bottom surface 562, first side elevation 563, first through hole 564; Second clamp 57: Third bottom surface 571, fourth bottom surface 572, second side elevation 573, second through hole 574; First floating component 58: First spring 581, first clamp mounting base 582, floating guide component 583; Second floating component 59: Second chuck mounting base 591; Welding mechanism 6: First coating mechanism 7: Coating drive component 71; Mounting plate 72; First coating pen 73; Elastic buffer component 74: limit screw 741, mounting base 742, floating groove 743, spring 744; Second coating mechanism 8; Fifth mounting bracket 81: mounting backplate 811, adapter plate 812, adapter plate drive assembly 813; Coating assembly 82: drive unit 821, second coating pen 822; Feeding handle 9: Incoming material inspection agency 10: First key point 101; Standardize Unit 102; Second key point 103; EL testing agency 104 for material loading; Discharge box 106; Third coating mechanism 110; Clamping mechanism 120; Material handling gripper 130; EL testing agency for outgoing materials 140; First fluid replenishment unit 180; Second fluid replenishment unit 150; NG material box 160; Buffer box 170; First welding strip 100, second welding strip 200, defective cell 300, adjacent cell 400, replacement cell 500, material basket 600. Detailed Implementation

[0069] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0070] like Figures 3 to 7 As shown, the battery string repair device provided in this application includes a repair platform 1, a replacement cell preparation mechanism 2, a replacement cell loading mechanism 3, a first solder strip cutting mechanism 4, a first solder strip clamping mechanism 5, and a welding mechanism 6, wherein: The repair platform 1 is used to carry the battery strings to be repaired, which include at least the first type of battery strings to be repaired with the cells to be replaced.

[0071] The first solder strip shearing mechanism 4 is disposed on one side of the rework platform 1 and is used to cut the solder strip between the defective battery cell to be replaced and the adjacent battery cell in the first type of battery string to be reworked. The adjacent battery cell includes at least one of a first-side adjacent battery cell and a second-side adjacent battery cell. The adjacent battery cell refers to the battery cell in the battery string that is adjacent to the defective battery cell, and the first-side adjacent battery cell and the second-side adjacent battery cell refer to the adjacent battery cells in the battery string located on the first and second sides of the defective battery cell, respectively.

[0072] The replacement cell preparation mechanism 2 is used to process an initial cell into a replacement cell. The initial cell has a first-side solder strip extending outward from a first side of its upper surface and a second-side solder strip extending outward from a second side of its lower surface. The replacement cell preparation mechanism 2 is configured to cut at least one of the first-side solder strip and the second-side solder strip to obtain a replacement cell. The replacement cell includes at least one of a head replacement cell, a middle replacement cell, and a tail replacement cell.

[0073] The initial solar cells can be pre-made by welding, that is, welding the first-side solder strip and the second-side solder strip to the upper and lower surfaces of the cell, respectively. Alternatively, the initial solar cells can also be pre-made by bonding, that is, bonding the first-side solder strip and the second-side solder strip to the upper and lower surfaces of the cell using adhesive dots or tape. The connection method between the solder strips and the cell in the initial solar cell depends on the connection method between the solder strips and the cell in the battery string to be repaired.

[0074] To ensure that initial solar cells can be cut and prepared into head, middle, or tail replacement solar cells according to repair needs, the length of the first and second side solder strips extending beyond the initial solar cell must be at least equal to the length of the longer solder strip group extending beyond the replacement solar cell in any of the head, middle, or tail replacement solar cells. During the preparation process, depending on the specific type of replacement solar cell to be prepared, the replacement solar cell preparation mechanism 2 selects to cut either the first or second side solder strips, or both.

[0075] The replacement cell loading mechanism 3 is used to pick up replacement cells from the replacement cell preparation mechanism 2 and load the picked-up replacement cells onto the defect location in the first type of battery string to be repaired on the repair platform 1. The defect location is the empty position in the first type of battery string to be repaired after the defective cells are removed.

[0076] The first welding strip clamping mechanism 5 is disposed on one side of the rework platform 1, and is used to clamp the first side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the first side adjacent battery cell, and to clamp the second side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the second side adjacent battery cell.

[0077] The welding mechanism 6 is located on one side of the rework platform 1 and is used to weld the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and to weld the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell.

[0078] Taking the case where the battery cell being replaced is located in the middle of the first type of battery string to be repaired (i.e., not at the beginning or end of the string) as an example, the optional repair process of the battery string repair machine of this utility model is as follows: First, the first type of battery string to be repaired is loaded onto the repair platform 1. Next, the first solder strip cutting mechanism 4 cuts the solder strip between the defective battery cell and the adjacent battery cell on the first side, and between the defective battery cell and the adjacent battery cell on the second side, removing the cut-off defective battery cell from the first type of battery string to be repaired. A defect location is created at the point where the defective battery cell is removed. Remaining solder strips for overlapping remain on the adjacent battery cells on both sides of the defect location. Simultaneously, the replacement battery cell preparation mechanism 2 processes the initial battery cells into replacement battery cells.

[0079] Next, the replacement cell feeding mechanism 3 is controlled to pick up a replacement cell from the replacement cell preparation mechanism 2 and to feed the picked-up replacement cell to the defect location.

[0080] Next, the first welding strip clamping mechanism 5 clamps the first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell. Then, the welding mechanism 6 welds the clamped first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell.

[0081] Finally, the first welding strip clamping mechanism 5 clamps the second side welding strip of the replacement battery cell together with the welding strip to be overlapped on the adjacent battery cell on the second side. Then, the welding mechanism 6 welds the clamped second side welding strip of the replacement battery cell together with the welding strip to be overlapped on the adjacent battery cell on the second side.

[0082] As can be seen, by coordinating the replacement cell loading mechanism 3, the first solder strip cutting mechanism 4, the first solder strip clamping mechanism 5, and the welding mechanism 6, the battery string repair device of this application realizes the replacement and repair of defective cells in the battery string. In particular, by setting the replacement cell preparation mechanism 2 and the replacement cell loading mechanism 3, the battery string repair device of this application realizes the automatic cutting of the solder strip on the initial cell to obtain the required type of replacement cell, and automatically loading the replacement cell to the repair position, thereby improving the battery string repair efficiency.

[0083] When a defective battery cell is at the beginning of a first-type rework battery string, after cutting and removing the defective cell, there is no adjacent battery cell on the first side of the defect location, and the second side of the defect location is the adjacent battery cell on the second side. In this case, after the replacement battery cell is loaded onto the defect location on the rework platform 1, the first welding strip clamping mechanism 5 is controlled to clamp the second-side welding strip of the replacement battery cell together with the welding strip to be overlapped on the second-side adjacent battery cell. Finally, the welding mechanism 6 is controlled to weld the clamped second-side welding strip of the replacement battery cell together with the welding strip to be overlapped on the second-side adjacent battery cell.

[0084] When the defective battery cell is at the end of a first-type rework battery string, after cutting and removing the defective cell, there is no adjacent battery cell on the second side of the defect location, and the first side of the defect location is the first adjacent battery cell. In this case, after the replacement battery cell is loaded onto the defect location on the rework platform 1, the first welding strip clamping mechanism 5 is controlled to clamp the first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell. Finally, the welding mechanism 6 is controlled to weld the clamped first side welding strip of the replacement battery cell together with the welding strip to be overlapped on the first side adjacent battery cell.

[0085] like Figures 3 to 5 As shown, optionally, the replacement cell preparation mechanism 2 includes a feeding mechanism 21, a transfer mechanism 22, a support platform 23, a second solder ribbon clamping mechanism 24, a second solder ribbon cutting mechanism 25, and a buffer platform 26, wherein: the feeding mechanism 21 is used to supply initial cells. The transfer mechanism 22 is used to pick up the initial cells from the feeding mechanism 21 and transfer the initial cells to the support platform 23. The support platform 23 is used to adsorb and fix the initial cells. The second solder ribbon clamping mechanism 24 is located on one side of the support platform 23 and is used to clamp the end of the solder ribbon on the initial cells near the second solder ribbon clamping mechanism 24. The second solder ribbon cutting mechanism 25 is used to cut the end of the solder ribbon on the clamped initial cells to obtain replacement cells. The transfer mechanism 22 is also used to transfer the replacement cells to the buffer platform 26. The replacement cell loading mechanism 3 is used to pick up the replacement cells from the buffer platform 26.

[0086] As can be seen, through the cooperation of the feeding mechanism 21, the transfer mechanism 22, the support platform 23, the second welding strip clamping mechanism 24, the second welding strip cutting mechanism 25, and the buffer platform 26, the replacement cell preparation mechanism 2 automatically cuts the ends of the welding strip groups on the initial cell to automatically prepare replacement cells for repair. Furthermore, by buffering the replacement cell on the buffer platform 26, the replacement cell loading mechanism 3 can obtain the replacement cell from the buffer platform 26, thereby improving the loading efficiency of the replacement cell and thus improving the battery string repair efficiency.

[0087] Depending on the type of replacement solar cell to be prepared, it is sometimes necessary to cut the solder strips on both sides of the initial solar cell to obtain the required replacement solar cell. To solve this problem, optionally, the second solder strip cutting mechanism 25 is also used to cut the end of the solder strip on the side of the initial solar cell away from the second solder strip clamping mechanism 24.

[0088] Optionally, the second solder strip cutting mechanism 25 can be used to cut the solder strip on the other side of the initial cell in either of the following ways: First method: After the second solder strip cutting mechanism 25 cuts the solder strip on one side of the initial cell, the transfer mechanism 22 picks up the initial cell from the support platform 23, rotates the picked-up initial cell 180º, and places it back onto the support platform. This brings the uncut solder strip on the other side of the initial cell closer to the second solder strip clamping mechanism 24. The second solder strip clamping mechanism 24 can then clamp the uncut solder strip, allowing the second solder strip cutting mechanism 25 to cut the uncut solder strip and obtain a replacement cell. Second method: The second solder strip cutting mechanism 25 moves directly to the end of the solder strip on the side of the initial cell furthest from the second solder strip clamping mechanism 24 and cuts the solder strip without clamping the end.

[0089] like Figure 8As shown, optionally, the feeding mechanism 21 includes a basket conveying mechanism 211, a lifting mechanism 212, a docking conveying mechanism 213, and a picking mechanism 214, wherein: the basket conveying mechanism 211 is located below the picking mechanism 214. The lifting mechanism 212 is located between the basket conveying mechanism 211 and the picking mechanism 214, and the docking conveying mechanism 213 is connected to the movable part of the lifting mechanism 212. The lifting mechanism 212 is configured to drive the docking conveying mechanism 213 to descend to the basket changing station, so that the docking conveying mechanism 213 docks with the basket conveying mechanism 211. The basket conveying mechanism 211 is configured to convey a basket 600 filled with initial solar cells to the docking conveying mechanism 213 or receive an empty basket 600 output by the docking conveying mechanism 213. The lifting mechanism 212 is also configured to drive the docking conveying mechanism 213 to rise to the cell picking station, so that the initial solar cells located at the bottom of the basket 600 are higher than the picking mechanism 214. The picking mechanism 214 is configured to extend into the basket 600, and the lifting mechanism 212 is also configured to drive the docking conveyor 213 to descend, causing the initial solar cell located at the bottom of the basket 600 to fall onto the picking mechanism 214. The picking mechanism 214 is also configured to remove the initial solar cell from the basket 600. The transfer mechanism 22 picks up the initial solar cell from the picking mechanism 214.

[0090] Optionally, the basket 600 has several storage slots arranged at intervals along the vertical direction, and each storage slot contains one initial battery cell.

[0091] The optional feeding process of the feeding mechanism 21 is as follows: First, the lifting mechanism 212 drives the docking conveyor 213 to descend to the basket changing station, so that the docking conveyor 213 docks with the basket conveyor 211. The basket conveyor 211 then transports the basket 600 filled with the initial battery cells onto the docking conveyor 213.

[0092] Next, the lifting mechanism 212 drives the docking conveyor 213 to rise to the cell picking station, so that the initial cell at the bottom of the material basket 600 is higher than the picking mechanism 214, and the picking mechanism 214 then extends into the material basket 600.

[0093] Subsequently, the lifting mechanism 212 drives the docking conveyor 213 to descend a predetermined height, causing the initial solar cell at the bottom of the basket 600 to fall onto the picking mechanism 214. The picking mechanism 214 then removes the initial solar cell from the basket 600.

[0094] After the transfer mechanism 22 removes the initial battery cell from the picking mechanism 214, the picking mechanism 214 extends back into the basket 600. The lifting mechanism 212 then drives the docking conveyor 213 to descend a predetermined height (e.g., the distance between two adjacent storage slots), so that the initial battery cell at the bottom of the current basket 600 falls onto the picking mechanism 214, and the picking mechanism 214 then removes the initial battery cell from the basket 600.

[0095] In this manner, the material handling mechanism 214 sequentially removes all the initial solar cells from the material basket 600, and the transfer mechanism 22 takes the initial solar cells away from the material handling mechanism 214.

[0096] After all the initial solar cells in the basket 600 have been removed, the lifting mechanism 212 drives the docking conveyor 213 to descend again to the basket changing station, so that the docking conveyor 213 docks with the basket conveyor 211. The docking conveyor 213 transports the emptied basket 600 to the basket conveyor 211 and receives the next basket 600 filled with solar cells from the basket conveyor 211.

[0097] Through the cooperation of the basket conveying mechanism 211, the lifting mechanism 212, the docking conveying mechanism 213 and the picking mechanism 214, the feeding mechanism 21 realizes the automatic removal of the initial battery cells in the basket 600, thereby realizing the automatic feeding of the initial battery cells.

[0098] Optional, such as Figure 8 As shown, the material basket conveying mechanism 211 includes an empty material basket conveying section 2111 and a full material basket conveying section 2112 arranged side by side, and a transverse drive section 2113 that drives the empty material basket conveying section 2111 and the full material basket conveying section 2112 to move synchronously.

[0099] When the docking conveyor 213 lowers the empty basket 600 to the basket changing station, the lateral drive unit 2113 drives the empty basket conveyor 2111 and the full basket conveyor 2112 to move synchronously, so that the empty basket conveyor 2111 docks with the docking conveyor 213. This allows the docking conveyor 213 to transport the empty basket 600 to the empty basket conveyor 2111, which then transports it to the loading station away from the docking conveyor 213. Next, the lateral drive unit 2113 drives the empty basket conveyor 2111 and the full basket conveyor 2112 to move synchronously, so that the full basket conveyor 2112 docks with the docking conveyor 213. The full basket conveyor 2112 then transports another basket 600 filled with battery cells onto the docking conveyor 213.

[0100] In another alternative embodiment, the feeding mechanism 21 can independently prepare the initial solar cells; that is, the feeding mechanism 21 can independently weld or bond the first-side solder strip and the second-side solder strip to the solar cells. After the feeding mechanism 21 prepares each initial solar cell, the transfer mechanism 22 immediately retrieves the initial solar cell from the feeding mechanism 21. Alternatively, the feeding mechanism 21 can buffer several prepared initial solar cells in a basket or other form of buffering mechanism, and the transfer mechanism 22 can pick up the buffered initial solar cells from the feeding mechanism 21.

[0101] Continue to refer to Figure 8 As shown, optionally, the feeding mechanism 21 also includes a straightening mechanism 215 disposed on the side of the picking mechanism 214. The straightening mechanism 215 is used to correct the position of the initial battery cell taken out from the basket 600, thereby ensuring that the transfer mechanism 22 can smoothly pick up the initial battery cell from the picking mechanism 214.

[0102] The straightening mechanism 215 can be any existing straightening device capable of correcting the position of the initial solar cells. For example, the straightening mechanism 215 includes a first straightening wheel and a second straightening wheel respectively disposed on both sides of the feeding mechanism 214, as well as a straightening drive. When the straightening drive drives the first straightening wheel and the second straightening wheel to move toward the feeding mechanism 214, the first straightening wheel and the second straightening wheel straighten the initial solar cells located on the feeding mechanism 214 from both sides.

[0103] Optionally, the material handling mechanism 214 includes a material handling drive unit 2141 and a material handling plate 2142. The material handling plate 2142 is connected to the drive end of the material handling drive unit 2141. When the material handling drive unit 2141 drives the material handling plate 2142 to extend into the material basket 600, the initial battery cell located at the bottom of the material basket 600 falls onto the material handling plate 2142 and is adsorbed by the material handling plate 2142. When the material handling drive unit 2141 drives the material handling plate 2142 to withdraw from the material basket 600, the initial battery cell is removed from the material basket 600.

[0104] Optionally, the material handling drive unit 2141 is a cylinder, and the material handling piece 2142 is connected to the telescopic rod of the cylinder. The cylinder controls the extension and retraction of the telescopic rod, thereby driving the material handling piece 2142 to extend into the material basket 600 and retract from the material basket 600. Optionally, the material handling piece 2142 is provided with adsorption holes, through which the material handling piece 2142 adsorbs the initial battery cell.

[0105] like Figure 9As shown, optionally, the transfer mechanism 22 includes a first drive module 221 and a first adsorption member 222 connected to the drive end of the first drive module 221. The first drive module 221 is used to drive the first adsorption member 222 to translate and lift, so as to drive the first adsorption member 222 to adsorb the initial battery cell or the replacement battery cell, and to transfer the adsorbed initial battery cell or the replacement battery cell.

[0106] In addition, the transfer mechanism 22 is also configured to adjust the angle of the initial or replacement battery cell during the transfer process, thereby correcting the position of the initial or replacement battery cell, so that the initial battery cell is transferred to the carrier platform in the correct posture, ultimately ensuring that the second solder strip clamping mechanism 24 and the second solder strip cutting mechanism 25 can successfully cut the solder strip on the initial battery cell, and that the replacement battery cell is transferred to the buffer platform 26 in the correct posture, ultimately ensuring that the replacement battery cell loading mechanism 3 can successfully pick up the replacement battery cell from the buffer platform 26 and load the replacement battery cell onto the rework platform 1.

[0107] Continue to refer to Figure 9 As shown, optionally, the transfer mechanism 22 includes an X-axis drive module 2211, a Y-axis drive module 2212, a Z-axis drive module 2213, and a rotary drive module 2214. The Y-axis drive module 2212 is connected to the drive end of the X-axis drive module 2211, the Z-axis drive module 2213 is connected to the drive end of the Y-axis drive module 2212, the rotary drive module 2214 is connected to the drive end of the Z-axis drive module 2213, and the first suction member 222 is connected to the drive end of the rotary drive module 2214. Through the coordinated driving of the X-axis drive module 2211, Y-axis drive module 2212, Z-axis drive module 2213 and rotation drive module 2213, the transfer mechanism 22 realizes the translation and lifting drive of the first adsorption member 222, as well as the rotation drive of the first adsorption member 222. Ultimately, the transfer mechanism 22 realizes the transfer of the initial battery cell or the replacement battery cell, and completes the position correction of the initial battery cell or the replacement battery cell during the transfer process.

[0108] like Figures 10 to 13 As shown, optionally, the second solder strip clamping mechanism 24 includes a second drive module 241, a first mounting bracket 242, and a clamping assembly 243, wherein: the first mounting bracket 242 is connected to the drive end of the second drive module 241, and the clamping assembly 243 is disposed on the first mounting bracket 242. The second drive module 241 is used to drive the clamping assembly 243 to move laterally closer to or further away from the support platform 23, and the clamping assembly 243 is used to clamp the end of the first side solder strip or the end of the second side solder strip on the initial battery cell.

[0109] The second drive module 241 is also used to drive the clamping assembly 243 to rise and fall, so that the end of the clamped first side solder strip or the end of the second side solder strip forms a shearing angle with the initial battery cell, thereby ensuring that the second solder strip shearing mechanism 25 can smoothly cut the end of the first side solder strip or the end of the second side solder strip.

[0110] Optionally, the clamping assembly 243 includes a pressure plate 2431, a rotating shaft 2432, a gripper drive 2434, and several grippers 2433. The pressure plate 2431 is fixedly mounted on the first mounting bracket 242, and the rotating shaft 2432 is mounted on the first mounting bracket 242 and located below the pressure plate 2431. Several grippers 2433 are sleeved on the rotating shaft 2432 and can rotate relative to the rotating shaft 2432. The gripper drive 2434 is located at the bottom of the first mounting bracket 242 and is drively connected to the first end of the gripper 2433. The second end of the gripper 2433 is the clamping end. When the gripper drive 2434 drives the several grippers 2433 to rotate synchronously in a first clockwise direction (e.g., counterclockwise), the clamping end of each gripper 2433 clamps a corresponding welding strip onto the pressure plate 2431. When the gripper drive 2434 drives several grippers 2433 to rotate synchronously in the second clockwise direction (such as clockwise direction), the gripping end of each gripper 2433 disengages from the pressure plate 2431, thereby releasing the corresponding welding strip.

[0111] Of course, the clamping assembly 243 may also be an existing clamping mechanism with other structures capable of clamping the ends of multiple welding strips.

[0112] like Figure 14 As shown, optionally, the second welding strip shearing mechanism 25 includes a third drive module (not shown), a second mounting bracket 251, a fixed cutter 252, a movable cutter 253, and a cutter drive component 254, wherein: the second mounting bracket 251 is connected to the drive end of the third drive module. The fixed cutter 252 is fixedly connected to the second mounting bracket 251, and a plurality of hooks 255 are arranged side by side at intervals on the lower edge of the fixed cutter 252. The hook-shaped part of the hook 255 forms a support slope for supporting the welding strip, and the upper end of the support slope forms a fixed blade. The movable cutter 253 is slidably connected to the second mounting bracket 251 and fits against the fixed cutter 252. The lower edge of the movable cutter 253 forms a movable blade that cooperates with each fixed blade.

[0113] The drive end of the cutter drive 254 is connected to the movable cutter 253. The cutter drive 254 drives the movable cutter 253 to slide relative to the fixed cutter 252, so that the movable cutter 253 switches between a clearance position and a shearing position. When the movable cutter 253 slides to the clearance position, a gap is formed between the movable blade and each fixed blade for the weld strip to pass through. When the movable cutter 253 slides to the shearing position, the movable blade and each fixed blade cooperate to shear the weld strip passing through the gap.

[0114] Taking the shearing process of the first side solder strip on the initial battery cell as an example, the shearing process of the second solder strip shearing mechanism 25 is as follows: In the initial state, the movable cutter 253 is in the avoidance position, and a gap is formed between the fixed blade of each hook 255 and the movable blade of the movable cutter 253 for the welding strip to pass through.

[0115] When it is necessary to cut the first side solder strip on the initial battery cell, the third drive module drives the second mounting bracket 251 to move, so that each hook 255 extends between two adjacent solder strips in the first side solder strip. The third drive module drives the second mounting bracket 251 to descend, so that each hook 255 passes downward through two adjacent solder strips.

[0116] Next, the third drive module drives the second mounting bracket 251 to translate, so that each hook 255 moves to below the corresponding welding strip, so that the welding strip is supported on the support slope of the hook 255.

[0117] Finally, the cutter drive 254 drives the movable cutter 253 to slide to the cutting position, and the movable blade of the movable cutter 253 cooperates with the fixed blade of each hook 255 to cut the welding strip passing between them.

[0118] The second weld strip shearing mechanism 25 described above is particularly suitable for cutting flat weld strips. It works by extending a hook 255 under the weld strip and using the supporting ramp of the hook 255 to support the inclined flat weld strip. Then, the movable cutter 253 cuts the weld strip along its thickness direction, ensuring that the flat weld strip retains its original shape after cutting, without twisting, and that the cut surface is smooth and burr-free. Of course, this second weld strip shearing mechanism 25 is also suitable for cutting round weld strips.

[0119] Of course, the second welding strip shearing mechanism 25 can also be an existing shearing device with other structures that can simultaneously shear multiple welding strips.

[0120] Optionally, the first strip shearing mechanism 4 adopts the same structure as the second strip shearing mechanism 25.

[0121] like Figures 3 to 5As shown, optionally, the replacement cell fabrication mechanism 2 in this embodiment further includes a first detection mechanism 27. The transfer mechanism 22 is configured to pick up initial cells from the feeding mechanism 21 and transfer the picked-up initial cells to the first detection mechanism 27. The first detection mechanism 27 is at least configured to perform position detection and defect detection on the initial cells to obtain position information and quality information of the initial cells. The transfer mechanism 22 is also configured to transfer the initial cells from the first detection mechanism 27 to the support platform 23 or the buffer platform 26, and the transfer mechanism 22 is further configured to straighten the initial cells based on their position information during the transfer process.

[0122] When the first inspection mechanism 27 detects that the initial cell is defect-free, but the length of the solder strip on it cannot meet the requirements for replacing the cell, it means that the solder strip on the initial cell needs to be cut. Then the transfer mechanism 22 transfers the initial cell from the first inspection mechanism 27 to the support platform 23, and corrects the position of the initial cell during the transfer process to facilitate the subsequent solder strip cutting operation.

[0123] When the first inspection mechanism 27 detects that the initial battery cell is defect-free and the length of the solder strip on it is sufficient to meet the requirements for replacing the battery cell, it means that there is no need to cut the solder strip on the initial battery cell. Then the transfer mechanism 22 can directly transfer the initial battery cell from the first inspection mechanism 27 to the buffer platform 26 and correct the position of the initial battery cell during the transfer process to facilitate subsequent rework operations.

[0124] When the first inspection agency 27 detects that the initial solar cells are defective and cannot meet the usage requirements, the initial solar cells can be put into the NG solar cell box through the transfer mechanism 22 to prevent the defective solar cells from flowing into the subsequent process.

[0125] As can be seen, by setting up the first detection mechanism 27, the position detection and quality detection of the initial battery cells are realized, so that the transfer mechanism 22 can transfer the initial battery cells to a suitable position according to the detection results, and at the same time, the position of the initial battery cells can be regulated according to the detection results for subsequent use.

[0126] Optionally, the first inspection unit 27 includes at least one of a visual inspection unit and an EL (Electroluminescent) inspection unit. The visual inspection unit can employ a conventional CCD camera with a light source to photograph and analyze the initial solar cell to detect its position and appearance. The EL inspection unit can detect any solder joint defects or internal defects in the initial solar cell.

[0127] Optionally, the replacement cell preparation mechanism 2 further includes a second inspection mechanism 28. A buffer stage 26 is mounted on a fourth drive module, which drives the buffer stage 26 to move the replacement cell to be inspected to the second inspection mechanism 28. The second inspection mechanism 28 is configured to perform at least one of position detection and defect detection on the replacement cell. The replacement cell loading mechanism 3 picks up the replacement cell after inspection by the second inspection mechanism 28 from the buffer stage 26.

[0128] When the second testing agency 28 detects that the position of the replacement battery cell on the buffer platform 26 cannot meet the requirements for subsequent repair, the replacement battery cell can be picked up again by the transfer mechanism 22, repositioned, and then placed back on the buffer platform 26 for subsequent repair.

[0129] When the second inspection mechanism 28 detects that the replacement cell on the buffer platform 26 is defective (such as unqualified solder strip length, unqualified cell quality, etc.) and cannot be used, the replacement cell can be put into the NG cell box through the transfer mechanism 22 or the replacement cell loading mechanism 3 to avoid defective cells flowing into the subsequent process.

[0130] Optionally, the second inspection unit 28 can be a conventional visual inspection unit, such as one including a CCD camera and a light source.

[0131] like Figure 3 As shown, optionally, the buffer station 26 includes a first buffer station 261, a second buffer station 262, and a third buffer station 263 arranged side by side. The first buffer station 261 is used to buffer the head replacement battery cells transported by the transfer mechanism 22, which are used to replace defective battery cells located at the head of the battery string to be repaired. The second buffer station 262 is used to buffer the tail replacement battery cells transported by the transfer mechanism 22, which are used to replace defective battery cells located at the tail of the battery string to be repaired. The third buffer station 263 is used to buffer the middle replacement battery cells transported by the transfer mechanism 22, which are used to replace defective battery cells located between the head and tail battery cells in the battery string to be repaired.

[0132] By configuring the buffer station 26 to include a first buffer station 261, a second buffer station 262, and a third buffer station 263, partitioned buffering of head replacement battery cells, tail replacement battery cells, and middle replacement battery cells is achieved. This ensures that during the rework process, the replacement battery cell feeding mechanism 3 can accurately obtain the appropriate type of replacement battery cell from the buffer station 26 and feed the replacement battery cell to the subsequent rework station.

[0133] Optionally, sensors are provided on the first buffer platform 261, the second buffer platform 262, and the third buffer platform 263. When the replacement battery cells on the first buffer platform 261, the second buffer platform 262, and the third buffer platform 263 are emptied, the corresponding sensors are triggered to generate sensing signals. The second solder ribbon clamping mechanism 24 and the second solder ribbon cutting mechanism 25 cut the solder ribbon on the initial battery cell according to the received sensing signals, thereby supplementing the preparation of the corresponding type of replacement battery cell, ensuring that the first buffer platform 261, the second buffer platform 262, and the third buffer platform 263 all have the corresponding type of replacement battery cell, so that the replacement battery cell loading mechanism 3 can obtain the required type of replacement battery cell in a timely manner.

[0134] like Figure 15 As shown, optionally, the replacement cell loading mechanism 3 includes a fifth drive module 31, a third mounting bracket 32, and a second adsorption member 33, wherein: the third mounting bracket 32 ​​is connected to the drive end of the fifth drive module 31, and the second adsorption member 33 is disposed on the third mounting bracket 32. The fifth drive module 31 is used to drive the second adsorption member 33 to translate and lift, so as to drive the second adsorption member 33 to pick up replacement cells from the replacement cell preparation mechanism 2 and load the replacement cells onto the rework platform 1.

[0135] like Figure 16 As shown, optionally, the rework platform 1 includes a mounting base 11, an intermediate welding station 12, a first side welding station 13 and a second side welding station 14, wherein: the intermediate welding station 12 can be vertically flipped and mounted on the mounting base 11, and the intermediate welding station 12 is used to carry and absorb defective battery cells and replacement battery cells in the battery string to be reworked.

[0136] The first side welding station 13 is movably mounted on the mounting base 11. The first side welding station 13 is used to support the battery cell on the first side of the defective battery cell and is at least able to adsorb the adjacent battery cell on the first side. The first side welding station 13 is configured to be able to translate toward or away from the intermediate welding station 12 to achieve docking and separation with the intermediate welding station 12, and is configured to be able to move up and down in the vertical direction to achieve alignment and misalignment with the intermediate welding station 12.

[0137] The second side welding station 14 is movably mounted on the mounting base 11. The second side welding station 14 is used to support the battery cell on the second side of the defective battery cell and can at least adsorb the adjacent battery cell on the second side. The second side welding station 14 is configured to be able to translate toward or away from the intermediate welding station 12 to achieve docking and separation with the intermediate welding station 12, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding station 12.

[0138] In the initial state, the intermediate welding station 12, the first side welding station 13, and the second side welding station 14 are connected horizontally and aligned vertically, forming a continuous horizontal welding surface.

[0139] For the first type of battery string to be replaced, the first type of battery string to be replaced is first placed on the horizontal welding platform, and the defective battery is adsorbed on the middle welding platform 12, and the adjacent battery on both sides of the defective battery is adsorbed on the first side welding platform 13 and the second side welding platform 14 respectively.

[0140] Next, the first side welding station 13 and the second side welding station 14 are controlled to rise or fall, so that the first side welding station 13 and the second side welding station 14 are staggered from the middle welding station 12 in the vertical direction. At this time, the first welding strip cutting mechanism 4 can easily cut the welding strip between the defective battery cell and the adjacent battery cell.

[0141] After the welding strip is cut, the first side welding station 13 and the second side welding station 14 are controlled to move away. Then, the middle welding station 12 is controlled to flip, so that the defective battery cells that have been disassembled are removed from the middle welding station 12.

[0142] It can be seen that by setting up the rework platform 1, the rework platform 1 can work with the first welding strip shearing mechanism 4 to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0143] Optionally, the intermediate soldering station 12 is mounted on the flipping drive mechanism 15, which drives the intermediate soldering station 12 to flip vertically.

[0144] When defective solar cells are removed from the first type of rework cell string, solder debris, cell fragments, and other impurities fall onto the intermediate soldering station. If not cleaned promptly, this will affect the quality of subsequent rework. To address this issue, the rework platform 1 may optionally include a cleaning mechanism located on the side of the intermediate soldering station 12. This cleaning mechanism is configured to perform operations such as blowing, wiping, or suction on the intermediate soldering station 12 after the defective solar cells are removed, to remove impurities from the intermediate soldering station.

[0145] like Figures 17 to 22 As shown, optionally, the first welding strip clamping mechanism 5 includes a sixth drive module (not shown in the figure), a fourth mounting bracket 51, an opening and closing drive mechanism 52, a first guide mounting seat 53, a second guide mounting seat 54, an elastic clamping mechanism 55, and several first clamps 56 and second clamps arranged in pairs, wherein: The fourth mounting bracket 51 is connected to the drive end of the sixth drive module, which is used to drive the fourth mounting bracket 51 to move. The opening and closing drive mechanism 52 is mounted on the fourth mounting bracket 51, and the first guide mounting seat 53 and the second guide mounting seat 54 are both connected to the drive end of the opening and closing drive mechanism 52.

[0146] Each first clamp 56 is arranged side by side, and each first clamp 56 is connected to the first guide mounting base 53 in a floating manner via a first floating component 58. Each second clamp 57 is arranged side by side, and each second clamp 57 is connected to the second guide mounting base 54 in a floating manner via a second floating component 59, and is able to rotate in the horizontal plane relative to the second guide mounting base 54.

[0147] The elastic clamping mechanism 55 is mounted on the second guide mounting base 54. The elastic clamping mechanism 55 includes several elastic clamping components 551 corresponding one-to-one with the second clamps 57. The second guide mounting base 54 is provided with a reference block corresponding to each second clamp 57. The elastic clamping component 551 is used to elastically push the corresponding second clamp 57 to rotate in the horizontal plane so as to abut against the corresponding reference block, so that the clamping end of each second clamp 57 is aligned with the clamping end of the corresponding first clamp 56. The elastic clamping component 551 can also elastically deform when subjected to the reverse force of the corresponding second clamp 57.

[0148] The opening and closing drive mechanism 52 is used to drive the first guide mounting base 53 and the second guide mounting base 54 to move towards the center after the clamping end of the second chuck 57 is aligned with the clamping end of the corresponding first chuck 56, so that the clamping end of the second chuck 57 and the clamping end of the corresponding first chuck 56 cooperate to clamp the welding strip. The opening and closing drive mechanism 52 is also used to drive the first guide mounting base 53 and the second guide mounting base 54 to separate to both sides, so that the clamping end of the second chuck 57 and the clamping end of the corresponding first chuck 56 release the welding strip.

[0149] The optional working process of the first welding strip clamping mechanism 5 is as follows: Initially, the first clamp 56 and the corresponding second clamp 57 in each group are in an open state (e.g., Figure 22 ).

[0150] Next, the sixth drive module adjusts the position of the fourth mounting bracket 51 so that the clamping gap between each set of first clamps 56 and second clamps 57 is aligned with the corresponding first welding strip 100 and second welding strip 200 to be overlapped. The first welding strip 100 is, for example, one of the welding strips on the first side of the battery cell, and the second welding strip 200 is, for example, one of the welding strips to be overlapped on the first side adjacent to the battery cell.

[0151] Next, the sixth drive module drives the fourth mounting bracket 51 to descend. Since the first clamp 56 can be connected to the first guide mounting seat 53 by the first floating component 58 and the second clamp 57 can be connected to the second guide mounting seat 54 by the second floating component 59, as the fourth mounting bracket 51 descends, the relative positions of the first clamp 56 and the second clamp 57 in the height direction can be adaptively adjusted after contacting the battery cell, ultimately ensuring that both the first clamp 56 and the second clamp 57 are in contact with the battery cell, achieving alignment in the height direction.

[0152] Meanwhile, under the action of each elastic clamping component 551, each second clamp 57 can automatically abut against the corresponding reference block, thereby aligning the clamping end of each second clamp 57 with the clamping end of the corresponding first clamp 56.

[0153] Finally, the opening and closing drive mechanism 52 drives the first guide mounting seat 53 and the second guide mounting seat 54 to move closer to the center, causing the clamping ends of each second clamp 57 to clamp synchronously with the clamping ends of the corresponding first clamp 56, so as to synchronously implement the horizontal overlap of each pair of first welding strips 100 and second welding strips 200.

[0154] As can be seen, since each first clamp 56 and each second clamp 57 can be connected to the corresponding guide mounting base in a floating manner, the first clamp 56 and the second clamp 57 can achieve adaptive adjustment of their relative positions in the height direction after descending and contacting the battery cell, thereby ensuring that the first clamp 56 and the second clamp 57 can be aligned in the height direction.

[0155] Meanwhile, by setting the elastic clamping mechanism 55, the first solder strip clamping mechanism 5 can also adaptively adjust the angle of the clamping end of the second chuck 57 in the horizontal direction, thereby ensuring that the clamping end of the second chuck 57 is aligned with the clamping end of the first chuck 56, ensuring that the two solder strips can smoothly climb the solder and achieve overlap during the welding process, and ultimately ensuring the quality of the overlap soldering.

[0156] When there are no foreign objects such as solder balls on the first solder strip 100 and the second solder strip 200 to be overlapped, the first solder strip 100 and the second solder strip 200 can be clamped by the clamping ends of the first clamp 56 and the second clamp 57 after alignment. This can reduce or eliminate the gap between the clamped first solder strip 100 and the second solder strip 200, so that the first solder strip 100 and the second solder strip 200 can be smoothly soldered during the soldering process, thereby improving the overlap quality.

[0157] When foreign objects such as solder balls are present on the first solder strip 100 and the second solder strip 200 to be overlapped, after the first solder strip 100 and the second solder strip 200 are clamped by the clamping ends of the aligned first chuck 56 and the second chuck 57, a large gap will still exist between the clamped first solder strip 100 and the second solder strip 200 due to the obstruction of the foreign objects. However, due to the presence of the elastic clamping component 551, the foreign objects can force the second chuck 57 to rotate, causing the elastic clamping component 551 to elastically deform. After the foreign objects remelt during the soldering process, under the action of the elastic clamping component 551, the second chuck 57 can rotate back to the reference position, thereby reducing or eliminating the gap between the first solder strip 100 and the second solder strip 200, allowing the first solder strip 100 and the second solder strip 200 to smoothly climb the solder during the soldering process, improving the overlap quality.

[0158] like Figure 17 and Figure 21 As shown, optionally, the first floating assembly 58 includes a first guide post, a first spring 581, a first chuck mounting base 582, and a floating guide assembly 583, wherein: the upper and lower ends of the first guide post are respectively fixedly connected to the first guide mounting base 53; the first chuck mounting base 582 is slidably fitted onto the first guide post; the first spring 581 is fitted onto the first guide post, with its upper end abutting against the first guide mounting base 53 and its lower end abutting against the first chuck mounting base 582; the first chuck 56 is mounted on the first chuck mounting base 582, with its clamping end extending downwards from the first chuck mounting base 582; and the floating guide assembly 583 is disposed between the first chuck mounting base 582 and the first guide mounting base 53, for restricting the first chuck mounting base 582 to move vertically.

[0159] Because a first spring 581 is provided between the first chuck mounting base 582 and the first guide mounting base 53, when the sixth drive module drives the fourth mounting bracket 51 to descend, the first chuck 56 can achieve adaptive adjustment of its relative position in the height direction after descending and contacting the battery cell under the extension and retraction adjustment of the first spring 581. During this process, the floating guide component 583 implements limiting guidance on the first chuck mounting base 582, so that the first chuck mounting base 582 can only move vertically and cannot rotate on the horizontal plane. Finally, it is ensured that when the second chuck 57 rotates to the position relative to the first chuck 56, the clamping end of the second chuck 57 is aligned with the clamping end of the first chuck 56.

[0160] Optionally, the second floating assembly 59 includes a second guide post, a second spring, and a second chuck mounting base 591, wherein: the upper and lower ends of the second guide post are respectively fixedly connected to the second guide mounting base 54; the second chuck mounting base 591 is slidably fitted onto the second guide post; the second spring is fitted onto the second guide post, with its upper end abutting against the second guide mounting base 54 and its lower end abutting against the second chuck mounting base 591; and the second chuck 57 is mounted on the second chuck mounting base 591, with its clamping end extending downwards from the second chuck mounting base 591.

[0161] Since a second spring is provided between the second chuck mounting base 591 and the second guide mounting base 54, when the sixth drive module drives the fourth mounting bracket 51 to descend, the second chuck 57 can achieve adaptive adjustment of its relative position in the height direction after descending and contacting the battery cell under the extension and retraction adjustment of the second spring. Furthermore, the second chuck mounting base 591 can also rotate around the second guide post after being subjected to force, thereby driving the second chuck 57 to rotate in the horizontal plane.

[0162] like Figure 17 , Figure 10 and Figure 20 As shown, optionally, the elastic clamping assembly 551 includes a fixed frame 5511 and a compression spring 5512. The fixed frame 5511 is mounted on the second guide mounting seat 54. The first end of the compression spring 5512 elastically abuts against the fixed frame 5511, and the second end of the compression spring 5512 elastically abuts against the second chuck mounting seat 591. The compression spring 5512 elastically pushes the second chuck mounting seat 591 to rotate in the horizontal plane, thereby causing the second chuck 57 to abut against the corresponding reference block. It can be seen that the elastic clamping assembly 551 does not require an additional elastic drive assembly; the compression spring 5512 pushes the second chuck mounting seat 591 to rotate through its own elastic force, thereby keeping the second chuck 57 abutting against the corresponding reference block.

[0163] like Figure 22As shown, optionally, the bottom surface of the clamping end of the first chuck 56 includes a first bottom surface 561, a second bottom surface 562, and a first side surface 563, wherein the first bottom surface 561 is lower than the second bottom surface 562, and the first side surface 563 is located between the first bottom surface 561 and the second bottom surface 562. The bottom surface of the clamping end of the second chuck 57 includes a third bottom surface 571, a fourth bottom surface 572, and a second side surface 573, wherein the third bottom surface 571 is lower than the fourth bottom surface 572, and the second side surface 573 is located between the third bottom surface 571 and the fourth bottom surface 572, forming a clamping space between the second side surface 573 and the first side surface 563. The second side surface 573 and the first side surface 563 move closer to or further away from each other as the first guide mounting seat 53 and the second guide mounting seat 54 move relative to each other, so as to clamp or release the first welding strip 100 and the second welding strip 200 located in the clamping space. The first bottom surface 561 and the third bottom surface 571 are used to abut the battery cell.

[0164] By configuring the clamping ends of the first clamp 56 and the second clamp 57 as described above, it can be achieved that as the first clamp 56 and the second clamp 57 descend, the first bottom surface 561 of the first clamp 56 and the third bottom surface 571 of the second clamp 57 can float upwards after contacting the battery cell, eventually reaching the same height. The welding strip to be clamped enters between the first side surface 563 of the first clamp 56 and the second side surface 573 of the second clamp 57. Subsequently, the first clamp 56 and the second clamp 57 move closer to the middle, thereby causing the first side surface 563 and the second side surface 573 to smoothly clamp the first welding strip 100 and the second welding strip 200 to be overlapped.

[0165] Optionally, the clamping end of the first chuck 56 is further provided with a vertical first through hole 564, and the clamping end of the second chuck 57 is further provided with a vertical second through hole 574. When the clamping ends of the first chuck 56 and the second chuck 57 clamp the first welding strip 100 and the second welding strip 200, the first welding strip 100 and the second welding strip 200 are exposed through the first through hole 564 and the second through hole 574. Optionally, the first welding strip 100 is exposed through the first through hole 564, and the second welding strip 200 is exposed through the second through hole 574.

[0166] The first through hole 564 and the second through hole 574 can be used as ventilation holes. During the welding process, air can be blown into the ventilation holes to cool the welded strips. The first through hole 564 and the second through hole 574 can also be used as light transmission holes. In this case, laser welding can be used, allowing the laser beam to pass through the light transmission holes to irradiate the weld strips, thereby extending the heated length of the two weld strips, accelerating the melting of the solder on the weld strips, and ensuring the welding quality.

[0167] like Figure 16As shown, optionally, the battery string repair device in this embodiment further includes a first coating mechanism 7. The first coating mechanism 7 is configured to be movable to the repair platform 1, for applying flux to the overlap portion of the first-side solder strip of the replacement battery cell and the solder strip to be overlapped on the first-side adjacent battery cell, and for applying flux to the overlap portion of the second-side solder strip of the replacement battery cell and the solder strip to be overlapped on the second-side adjacent battery cell.

[0168] Before welding the first side solder strip of the replacement battery cell to the solder strip to be overlapped on the first side adjacent battery cell, the first coating mechanism 7 first applies flux to the overlap area of ​​the first side solder strip of the replacement battery cell and the solder strip to be overlapped on the first side adjacent battery cell. This ensures the welding quality of the first side solder strip of the replacement battery cell and the solder strip to be overlapped on the first side adjacent battery cell.

[0169] Similarly, before welding the second-side welding strip of the replacement battery cell to the welding strip to be overlapped on the adjacent second-side battery cell, the first coating mechanism 7 first applies flux to the overlap area of ​​the second-side welding strip of the replacement battery cell and the welding strip to be overlapped on the adjacent second-side battery cell. This ensures the welding quality of the second-side welding strip of the replacement battery cell to the welding strip to be overlapped on the adjacent second-side battery cell.

[0170] Optionally, the first coating mechanism 7 can be configured with a separate drive module to drive it to the rework platform 1. Of course, in order to save equipment costs and space, the first coating mechanism 7 and the first welding strip clamping mechanism 5 can be installed on the same drive module (i.e., the sixth drive module), or the first coating mechanism 7 and the replacement battery cell loading mechanism 3 can be installed on the same drive module (i.e., the fifth drive module), and so on.

[0171] like Figures 23 to 25 As shown, optionally, the first coating mechanism 7 includes a coating drive assembly 71, a mounting plate 72, and a plurality of first coating pens 73, wherein: the coating drive assembly 71 is connected to the drive end of the sixth drive module, and the mounting plate 72 is connected to the drive end of the coating drive assembly 71. The plurality of first coating pens 73 are arranged side-by-side at the bottom of the mounting plate 72, and each first coating pen 73 is connected to the bottom of the mounting plate 72 vertically and horizontally via an elastic buffer 74. Each first coating pen 73 is used to apply flux to a location to be overlapped. The coating drive assembly 71 is used to drive the plurality of first coating pens 73 to translate and move up and down, so that each first coating pen 73 contacts or detaches from the corresponding solder strip.

[0172] The first coating mechanism 7 uses a first coating pen 73 to apply flux to the solder strips, enabling spot coating. Compared with spraying, this method offers higher coating precision and saves more flux. Simultaneously, each first coating pen 73 is connected to the bottom of the mounting plate 72 via an elastic buffer 74, allowing it to extend and retract vertically. This ensures that when the mounting plate 72 descends, each first coating pen 73 contacts its corresponding solder strip, guaranteeing effective flux coating for all solder strips.

[0173] like Figure 16 As shown, the battery string repair device also includes a first fluid replenishment mechanism 180 disposed on one side of the repair platform. The first fluid replenishment mechanism 180 is used to replenish flux onto each of the first coating pens 73. The first fluid replenishment mechanism 180 can replenish flux onto the pen tips of the first coating pens 73 by means of spraying, soaking, or other methods.

[0174] like Figure 25 As shown, optionally, the elastic buffer 74 includes a mounting base 742 and a spring 744. The upper end of the mounting base 742 is slidably connected to the mounting plate 72. The coating pen 73 is fixedly mounted on the lower end of the mounting base 742. The spring 744 is sleeved on the mounting base 742, with its upper end abutting against the bottom of the mounting base 742 and its lower end abutting against a support step on the mounting base 742. When the first coating pen 73 contacts the corresponding solder ribbon, the spring 744 is compressed and contracts, thereby adaptively adjusting the height of the first coating pen 73 to ensure that each first coating pen 73 can contact the corresponding solder ribbon.

[0175] Optionally, the upper end of the mounting base 742 is further provided with a floating groove 743 extending vertically, and the elastic buffer 74 also includes a limiting screw 741 horizontally mounted on the mounting plate 72, with the top end of the limiting screw 741 located within the floating groove 743. This ensures that, on the one hand, the upper end of the mounting base 742 is limited within the mounting plate 72, and on the other hand, that the floating stroke of the mounting base 742 is equal to the length of the floating groove 743.

[0176] Optionally, welding mechanism 6 is a laser welding mechanism, mainly including components such as a laser for emitting laser beams, galvanometer, and field mirror. The laser welding mechanism is positioned above the rework platform 1. The laser welding mechanism performs rework welding in a non-contact manner, enabling targeted welding of overlapping parts. The welding temperature is controllable, resulting in minimal thermal impact on the solar cells and high welding quality.

[0177] As is known to those skilled in the art, common types of battery strings awaiting repair, besides the first type of battery strings awaiting replacement mentioned above, also include a second type of battery strings awaiting repair for repairing cold solder joints. The welding mechanism 6 in this embodiment is further used to weld the cold solder joints on at least one of the upper and lower surfaces of the second type of battery string awaiting repair, which is supported on the repair platform 1, so as to re-weld the cold solder joints onto the battery cells.

[0178] Since the laser energy emitted by the laser welding mechanism can pass through the battery cells through heat conduction and other means, the laser welding mechanism can be used to repair the cold welds on the two surfaces of the second type of battery string without flipping the battery string over.

[0179] Optionally, the laser welding mechanism also includes a temperature sensor coaxially mounted with the laser. The temperature sensor is used to detect the welding temperature in real time during the laser welding process. By adjusting the output power of the laser in real time based on the detected welding temperature, the welding temperature can be kept within a predetermined range, thereby ensuring the welding quality.

[0180] like Figure 26 As shown, the battery string repair device in this embodiment further includes a second coating mechanism 8. The second coating mechanism 8 is configured to be movable to the repair platform 1 and is used to apply flux to the poor solder joints on the upper surface of the second type of battery string to be repaired, which is supported on the repair platform 1. By setting the second coating mechanism 8, flux is applied to the poor solder joints on the upper surface of the second type of battery string to be repaired, thereby improving the quality of repairing poor solder joints on the upper surface of the second type of battery string to be repaired.

[0181] Optionally, the second coating mechanism 8 includes a seventh drive module (not shown), a fifth mounting bracket 81, and a plurality of coating components 82, wherein: the fifth mounting bracket 81 is connected to the drive end of the seventh drive module. The plurality of coating components 82 are arranged side-by-side on the fifth mounting bracket 81, and each coating component 82 is capable of applying flux to a solder strip. Each coating component 82 includes a drive unit 821 and a second coating pen 822. The drive unit 821 is connected to the fifth mounting bracket 81, and the second coating pen 822 is connected to the drive end of the drive unit 821. The drive unit 821 is at least used to drive the second coating pen 822 to move up and down, causing the second coating pen 822 to contact or detach from the corresponding solder strip.

[0182] The second coating mechanism 8 uses a second coating pen 822 to apply flux to the solder strip, enabling spot coating. Compared to spraying, this method offers higher coating precision and saves more flux. Each second coating pen 822 is independently driven by its own drive unit 821. When each pen moves above the target solder strip, the pen corresponding to the solder strip with a poor solder joint can be individually controlled to descend and apply targeted coating, while the other pens remain away from their corresponding solder strips. This achieves precise spot coating of the solder strip with a poor solder joint, avoiding contamination of other solder strip areas and further conserving flux.

[0183] Optionally, the fifth mounting bracket 81 includes a mounting backplate 811, an adapter plate 812, and an adapter plate drive assembly 813. The mounting backplate 811 is connected to the drive end of the seventh drive module. The adapter plate 812 is slidably connected to the mounting backplate 811 and is drively connected to the adapter plate drive assembly 813 mounted on the mounting backplate 811. Several coating components 82 are mounted side-by-side on the adapter plate 812. The adapter plate drive assembly 813 drives the adapter plate 812 to slide and translate on the mounting backplate 811, thereby ensuring that each coating component 82 is aligned with its corresponding solder strip.

[0184] like Figure 15 As shown, to reduce equipment costs, in another optional embodiment, the second coating mechanism 8 does not have a separate drive module (i.e., the seventh drive module). Instead, it is integrated into the drive module of the replacement cell loading mechanism 3 (i.e., the fifth drive module 31). The fifth drive module 31 drives the second coating mechanism 8 to translate and move up and down, allowing the second coating mechanism 8 to apply flux to the flux at the poor solder joints on the upper surface of the second type of battery string to be repaired. Of course, besides integrating the second coating mechanism 8 into the drive module of the replacement cell loading mechanism 3 (i.e., the fifth drive module 31), the second coating mechanism 8 can also be integrated into the drive module of the first solder ribbon clamping mechanism 5 (i.e., the sixth drive module), and so on.

[0185] like Figure 4 and Figure 5 As shown, the battery string repair device also includes a second fluid replenishment mechanism 150 disposed on one side of the repair platform 1. The second fluid replenishment mechanism 150 is used to replenish flux onto each of the second coating pens 822. The second fluid replenishment mechanism 150 can replenish flux onto the pen tips of the second coating pens 822 by spraying, soaking, or other methods.

[0186] like Figure 3 , Figure 4 and Figure 7As shown, optionally, the battery string repair device in this embodiment further includes a loading gripper 9 and a feeding inspection mechanism 10. The feeding inspection mechanism 10 is used to detect the defect type and location of the battery string to be repaired. The loading gripper 9 is used to pick up the battery string to be repaired from the feeding inspection mechanism 10 and load it onto the repair platform 1.

[0187] By setting up the feeding inspection mechanism 10, the defect type and defect location of the battery string to be repaired are detected, thereby enabling the battery string repair device of this application embodiment to carry out targeted repair of the battery string to be repaired according to the defect type and defect location of the battery string to be repaired.

[0188] By setting up the feeding gripper 9, the battery strings to be repaired after inspection can be automatically fed onto the repair platform 1.

[0189] Optionally, the feeding inspection mechanism 10 includes a feeding mechanism (not shown in the figure), a first gripper 101, a sizing table 102, a first string inspection mechanism (not shown in the figure), a second gripper 103, a feeding EL inspection mechanism 104, a second string inspection mechanism (not shown in the figure), a transfer table (not shown in the figure), and a discharge box 106, wherein: the feeding mechanism is used to supply battery strings. The first gripper 101 is used to transport the battery strings supplied by the feeding mechanism to the sizing table 102, and the sizing table 102 is used to size the battery strings. The first string inspection mechanism is located above the sizing table 102 and is used to inspect the appearance defects on the upper surface of the battery strings. The second gripper 103 is used to transport the battery strings from the sizing table 102 to above the feeding EL inspection mechanism 104 and the second string inspection mechanism, wherein the feeding EL inspection mechanism 104 is used to perform EL inspection on the battery strings, and the second string inspection mechanism is used to inspect the appearance defects on the lower surface of the battery strings.

[0190] The second gripper 103 is also used to place the battery strings that have been inspected and determined to be in need of repair onto the transfer platform, and to place the battery strings that have been inspected and determined to be unrepairable into the discharge box 106. The loading gripper 9 picks up the battery strings to be in need of repair from the transfer platform.

[0191] By configuring the incoming inspection mechanism 10, it enables the detection of poor soldering, internal defects, and external defects in the battery strings, thereby determining whether the battery strings are to be repaired or cannot be repaired, and identifying the type and location of defects in the battery strings to be repaired. Furthermore, the incoming inspection mechanism 10 can place the identified battery strings to be repaired onto the transfer platform and place the battery strings that cannot be repaired into the discharge box.

[0192] Optionally, the first and second inspection mechanisms each include a CCD camera, which takes pictures of the upper and lower surfaces of the battery string to obtain visible light images of the upper and lower surfaces of the battery string. Subsequently, image analysis is performed on the visible light images of the upper and lower surfaces of the battery string to detect appearance defects on the upper and lower surfaces of the battery string.

[0193] Optionally, the loading EL inspection mechanism 104 includes two opposing conductive heads and an EL camera. The two opposing conductive heads clamp the head and tail solder strips of the battery string from both ends to energize the battery string, while the EL camera acquires infrared images of the battery string in the energized state for EL inspection.

[0194] Optionally, the battery string repair device in this application embodiment further includes a third coating mechanism 110, which is located on the moving path of the feeding gripper 9. The third coating mechanism 110 is used to apply flux to the poor solder joints on the lower surface of the second type of battery string to be repaired on the feeding gripper 9.

[0195] By setting up a third coating mechanism 110, flux is applied to the poor solder joints on the lower surface of the second type of battery string to be repaired, thereby improving the quality of repairing poor solder joints on the lower surface of the second type of battery string to be repaired.

[0196] Optionally, the third coating mechanism 110 can adopt a structure similar to the first coating mechanism 7 or the second coating mechanism 8, that is, using a coating pen to apply flux to the poor solder joints on the lower surface of the second type of battery string to be repaired. Alternatively, the coating pen of the third coating mechanism 110 can be configured to be vertically flipped, so that when applying flux, the pen tip faces upwards, and when not applying flux, the pen tip faces downwards, ensuring that the flux inside the pen can effectively wet the pen tip.

[0197] Optionally, the battery string repair device also includes a third fluid replenishment mechanism disposed on one side of the third coating mechanism 110. The third fluid replenishment mechanism is used to replenish flux onto the coating pen of the third coating mechanism 110. The third fluid replenishment mechanism can replenish flux onto the tip of the coating pen of the third coating mechanism 110 by means of spraying, immersion, or other methods.

[0198] like Figure 16 As shown, optionally, the battery string repair device in this application embodiment further includes a pressing mechanism 120. The pressing mechanism 120 is disposed on one side of the repair platform 1. The pressing mechanism 120 is used to press the solder strip with poor soldering in the second type of battery string to be repaired onto the corresponding battery cell, thereby ensuring that the solder strip with poor soldering can be re-welded to the corresponding battery cell, thereby further improving the quality of repairing poor soldering.

[0199] In order to save equipment costs, Figure 16In the implementation shown, the clamping mechanism 120 is integrated into the drive module of the first welding strip shearing mechanism 4 to drive the clamping mechanism 120 to translate and lift, pressing the welding strips with poor soldering in the second type of battery string to be repaired onto the corresponding battery cells. Of course, the clamping mechanism 120 can also be independently installed on its own drive module, and its translation and lifting can be driven by its own drive module.

[0200] like Figure 3 As shown, optionally, the battery string repair device in this embodiment further includes a feeding gripper 130, an output EL detection mechanism 140, a receiving mechanism (not shown in the figure), an NG material box 160, and a buffer material box 170. The feeding gripper 130 is used to transfer the repaired battery strings from the repair platform 1 to above the output EL detection mechanism 140. The output EL detection mechanism 140 is used to detect the repaired battery strings to determine their type. The types of repaired battery strings include qualified repaired battery strings, unqualified repaired battery strings that cannot be repaired a second time, and unqualified repaired battery strings that can be repaired a second time.

[0201] The unloading gripper 130 is also used to send qualified reworked battery strings to the receiving mechanism, send unqualified reworked battery strings that cannot be reworked a second time to the NG box 160, send unqualified reworked battery strings that can be reworked a second time to the buffer box 170, and send unqualified reworked battery strings in the buffer box 170 that can be reworked a second time to the rework platform 1.

[0202] As can be seen, by setting up the unloading gripper 130, the discharge EL detection mechanism 140, the receiving mechanism, the NG material box 160, and the buffer material box 170, the detection of the repaired battery strings is realized to determine the type of the repaired battery strings. In addition, the classification and receiving of three different types of repaired battery strings is also realized. In particular, the battery strings that fail the repair and can be re-repaired are sent back to the repair platform for secondary repair.

[0203] Optionally, the discharge EL inspection mechanism 140 includes two opposing conductive heads and an EL camera. The two opposing conductive heads clamp the head and tail solder strips of the reworked battery string from both ends to energize it. The EL camera acquires infrared images of the reworked battery string under energized conditions to perform EL inspection, detecting any cold solder joints or internal defects, and ultimately determining the type of reworked battery string.

[0204] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, and not by the above descriptions in the embodiments.

Claims

1. A battery string repair device, characterized in that, The battery string repair device includes a repair platform, a replacement cell preparation mechanism, a replacement cell loading mechanism, a first solder strip cutting mechanism, a first solder strip clamping mechanism, and a welding mechanism, wherein: The repair platform is used to carry battery strings to be repaired, and the battery strings to be repaired include at least the first type of battery strings to be repaired with cells to be replaced. The first solder strip cutting mechanism is disposed on one side of the rework platform and is used to cut the solder strip between the defective battery cell that needs to be replaced and the adjacent battery cell in the first type of battery string to be reworked. The adjacent battery cell includes at least one of the first side adjacent battery cell and the second side adjacent battery cell. The replacement battery cell preparation mechanism is used to process an initial battery cell into a replacement battery cell. The upper surface of the initial battery cell is connected to a first side solder strip extending outward from a first side of the initial battery cell, and the lower surface of the initial battery cell is connected to a second side solder strip extending outward from a second side of the initial battery cell. The replacement battery cell preparation mechanism is configured to cut at least one of the first side solder strip and the second side solder strip to obtain the replacement battery cell. The replacement battery cell includes at least one of a head replacement battery cell, a middle replacement battery cell, and a tail replacement battery cell. The replacement cell loading mechanism is used to pick up the replacement cell from the replacement cell preparation mechanism and load the picked-up replacement cell onto the defect location in the first type of battery string to be repaired on the rework platform. The defect location is the empty position in the first type of battery string to be repaired after the defective cell is removed. The first welding strip clamping mechanism is disposed on one side of the rework platform and is used to clamp the first side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the adjacent battery cell on the first side, and to clamp the second side welding strip of the replacement battery cell located at the defect location together with the welding strip to be overlapped on the adjacent battery cell on the second side. The welding mechanism is located on one side of the rework platform and is used to weld the first side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the first side adjacent battery cell, and to weld the second side welding strip of the clamped replacement battery cell to the welding strip to be overlapped on the second side adjacent battery cell. The replacement battery cell fabrication mechanism includes a feeding mechanism, a transfer mechanism, a support platform, a second welding strip clamping mechanism, and a second welding strip shearing mechanism, wherein: The feeding mechanism is used to supply the initial battery cells; The transfer mechanism is used to pick up the initial battery cell from the feeding mechanism and transfer the initial battery cell to the support platform; The support platform is used to adsorb and fix the initial battery cell; The second welding strip clamping mechanism is located on one side of the support platform, and the second welding strip clamping mechanism is used to clamp the end of the welding strip on the side of the initial battery cell that is close to the second welding strip clamping mechanism; The second solder strip cutting mechanism is used to cut the ends of the solder strip on the clamped initial cell to obtain a replacement cell; The second strip shearing mechanism includes a third drive module, a second mounting bracket, a fixed cutter, a movable cutter, and a cutter drive component, wherein: The second mounting bracket is connected to the drive end of the third drive module; The fixed cutter is fixedly connected to the second mounting bracket. Several hooks are arranged side by side at intervals on the lower edge of the fixed cutter. A support slope for supporting the welding strip is formed on the hook-shaped part of the hook. A fixed blade is formed at the upper end of the support slope. The movable cutter is slidably connected to the second mounting bracket and fits against the fixed cutter, and a movable blade is formed at the lower edge of the movable cutter to cooperate with each of the fixed blades; The drive end of the cutter drive is connected to the movable cutter. The cutter drive is used to drive the movable cutter to slide relative to the fixed cutter, so that the movable cutter switches between an avoidance position and a cutting position. When the movable cutter slides to the avoidance position, a gap is formed between the movable blade and each of the fixed blades for the welding strip to pass through; when the movable cutter slides to the shearing position, the movable blade and each of the fixed blades cooperate to shear the welding strip passing through the gap between them.

2. The battery string repair device as described in claim 1, characterized in that, The replacement cell fabrication mechanism further includes a buffer stage, wherein: The transfer mechanism is also used to transfer replacement battery cells to the buffer platform; The replacement battery cell loading mechanism is used to pick up the replacement battery cell from the buffer platform.

3. The battery string repair device as described in claim 2, characterized in that: The second ribbon cutting mechanism is also used to cut the end of the ribbon on the side of the initial cell away from the second ribbon clamping mechanism.

4. The battery string repair device as described in claim 2, characterized in that, The feeding mechanism includes a basket conveying mechanism, a lifting mechanism, a docking conveying mechanism, and a material handling mechanism, wherein: The basket conveying mechanism is located below the material handling mechanism; The lifting mechanism is disposed between the basket conveying mechanism and the material picking mechanism, and the docking conveying mechanism is connected to the movable part of the lifting mechanism; The lifting mechanism is configured to drive the docking conveyor to descend to the basket changing station, so that the docking conveyor docks with the basket conveyor; the basket conveyor is configured to convey a basket filled with initial battery cells to the docking conveyor or receive an empty basket output by the docking conveyor. The lifting mechanism is further configured to drive the docking conveyor to rise to the cell picking station, so that the initial cell at the bottom of the basket is higher than the picking mechanism; the picking mechanism is configured to extend into the basket, and the lifting mechanism is further configured to drive the docking conveyor to descend, so that the initial cell at the bottom of the basket falls onto the picking mechanism; the picking mechanism is further configured to remove the initial cell from the basket. The transfer mechanism picks up the initial battery cell from the material handling mechanism.

5. The battery string repair device as described in claim 4, characterized in that, The feeding mechanism also includes a straightening mechanism disposed on the side of the picking mechanism, which is used to correct the position of the initial battery cells taken out from the basket.

6. The battery string repair device as described in claim 5, characterized in that, The material handling mechanism includes a material handling drive unit and a material handling plate. The material handling plate is connected to the drive end of the material handling drive unit. When the material handling drive unit drives the material handling plate to extend into the material basket, the initial battery cell located at the bottom of the material basket falls onto the material handling plate and is adsorbed by the material handling plate. When the material handling drive unit drives the material handling plate to withdraw from the material basket, the initial battery cell is taken out from the material basket.

7. The battery string repair device as described in claim 2, characterized in that, The transfer mechanism includes a first drive module and a first adsorption member connected to the drive end of the first drive module. The first adsorption member is used to adsorb the initial battery cell or the replacement battery cell. The first drive module is used to drive the first adsorption member to translate and move up and down, and to drive the first adsorption member to rotate in a horizontal plane.

8. The battery string repair device as described in claim 2, characterized in that, The second welding strip clamping mechanism includes a second drive module, a first mounting bracket, and a clamping assembly, wherein: The first mounting bracket is connected to the drive end of the second drive module, and the clamping component is disposed on the first mounting bracket; The second drive module is used to drive the clamping assembly to move laterally closer to or away from the support platform, and the clamping assembly is used to clamp the end of the first side solder strip or the end of the second side solder strip on the initial battery cell; The second drive module is also used to drive the clamping assembly to move up and down, so that the end of the clamped first side solder strip or the end of the second side solder strip forms a shear angle with the initial battery cell.

9. The battery string repair device as described in claim 2, characterized in that, The replacement battery cell manufacturing mechanism also includes a first testing mechanism; The transfer mechanism is configured to pick up initial battery cells from the feeding mechanism and transfer the picked-up initial battery cells to the first detection mechanism; The first detection mechanism is configured to perform position detection and defect detection on the initial solar cell to obtain the position information and quality information of the initial solar cell. The transfer mechanism is further configured to transfer the initial battery cell from the first detection mechanism to the carrier platform or the buffer platform, and the transfer mechanism is further configured to straighten the initial battery cell based on the position information of the initial battery cell during the transfer process.

10. The battery string repair device as described in claim 9, characterized in that, The first testing organization includes at least one of a visual testing organization and an EL testing organization.

11. The battery string repair device as described in claim 2, characterized in that, The replacement battery cell preparation mechanism further includes a second detection mechanism. The buffer stage is disposed on the fourth drive module. The fourth drive module is used to drive the buffer stage to translate the replacement battery cell to be detected to the second detection mechanism. The second detection mechanism is configured to perform at least one of position detection and defect detection on the replacement battery cell. The replacement battery cell feeding mechanism picks up the replacement battery cells that have been inspected by the second inspection mechanism from the buffer platform.

12. The battery string repair device as described in claim 2, characterized in that, The cache platform includes a first cache platform, a second cache platform, and a third cache platform arranged side by side, wherein: The first buffer station is used to buffer the head replacement battery cell transported by the transfer mechanism. The head replacement battery cell is used to replace the defective battery cell located at the head of the battery string to be repaired. The second buffer station is used to buffer the tail replacement battery cell transported by the transfer mechanism, and the tail replacement battery cell is used to replace the defective battery cell located at the tail of the battery string to be repaired; The third buffer station is used to buffer the middle replacement battery cell transported by the transfer mechanism. The middle replacement battery cell is used to replace the defective battery cell located between the head battery cell and the tail battery cell in the battery string to be repaired.

13. The battery string repair device as described in claim 1, characterized in that, The replacement battery cell loading mechanism includes a fifth drive module, a third mounting bracket, and a second adsorption component, wherein: The third mounting bracket is connected to the drive end of the fifth drive module, and the second adsorption element is disposed on the third mounting bracket; The fifth drive module is used to drive the second adsorption component to translate and lift, so as to drive the second adsorption component to pick up the replacement battery cell from the replacement battery cell preparation mechanism and to load the replacement battery cell onto the rework platform.

14. The battery string repair device as described in claim 1, characterized in that, The rework platform includes a mounting base, an intermediate welding station, a first side welding station, and a second side welding station, wherein: The intermediate welding station can be vertically flipped and installed on the mounting base. The intermediate welding station is used to support and absorb the defective battery cell and the replacement battery cell in the battery string to be repaired. The first side welding station is movably mounted on the mounting base. The first side welding station is used to support the battery cell on the first side of the defective battery cell and is at least able to adsorb the adjacent battery cell on the first side. The first side welding station is configured to be able to translate toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding station. The second side welding station is movably mounted on the mounting base. The second side welding station is used to carry the battery cell on the second side of the defective battery cell and is at least able to adsorb the adjacent battery cell on the second side. The second side welding station is configured to be able to translate toward or away from the intermediate welding station to achieve docking and separation with the intermediate welding station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate welding station.

15. The battery string repair device as described in claim 14, characterized in that, The rework platform also includes a cleaning mechanism disposed on the side of the intermediate welding station; The cleaning mechanism is configured to remove impurities from the intermediate soldering station after the defective cell has been removed from the intermediate soldering station.

16. The battery string repair device as described in claim 1, characterized in that, The first welding strip clamping mechanism includes a sixth drive module, a fourth mounting bracket, an opening and closing drive mechanism, a first guide mounting seat, a second guide mounting seat, an elastic clamping mechanism, and several first and second clamps arranged in pairs, wherein: The fourth mounting bracket is connected to the drive end of the sixth drive module, and the sixth drive module is used to drive the fourth mounting bracket to move. The opening and closing drive mechanism is mounted on the fourth mounting bracket, and both the first guide mounting seat and the second guide mounting seat are connected to the drive end of the opening and closing drive mechanism. Each of the first clamps is arranged side by side, and each of the first clamps is connected to the first guide mounting base in a floating manner via a first floating component; each of the second clamps is arranged side by side, and each of the second clamps is connected to the second guide mounting base in a floating manner via a second floating component, and is capable of rotating relative to the second guide mounting base in a horizontal plane; The elastic clamping mechanism is mounted on the second guide mounting base. The elastic clamping mechanism includes a plurality of elastic clamping components corresponding one-to-one with the second clamps. A reference block is respectively provided on the second guide mounting base for each second clamp. The elastic clamping component is used to elastically push the corresponding second clamp to rotate in the horizontal plane to abut against the corresponding reference block, so that the clamping end of each second clamp is aligned with the clamping end of the corresponding first clamp. The elastic clamping component can also elastically deform when subjected to the reverse force of the corresponding second clamp. The opening and closing drive mechanism is used to drive the first guide mounting seat and the second guide mounting seat to move towards the center after the clamping end of the second chuck is aligned with the corresponding clamping end of the first chuck, so that the clamping end of the second chuck cooperates with the clamping end of the corresponding first chuck to clamp the welding strip; the opening and closing drive mechanism is also used to drive the first guide mounting seat and the second guide mounting seat to separate to both sides, so that the clamping end of the second chuck releases the welding strip from the clamping end of the corresponding first chuck.

17. The battery string repair device as described in claim 16, characterized in that, The first floating assembly includes a first guide post, a first spring, a first clamp mounting base, and a floating guide assembly, wherein: The upper and lower ends of the first guide post are respectively fixedly connected to the first guide mounting base. The first clamp mounting base is slidably fitted on the first guide post. The first spring is fitted on the first guide post. The upper end of the first spring abuts against the first guide mounting base, and the lower end of the first spring abuts against the first clamp mounting base. The first chuck is mounted on the first chuck mounting base, and the clamping end of the first chuck extends downward out of the first chuck mounting base; The floating guide assembly is disposed between the first chuck mounting base and the first guide mounting base, and is used to restrict the first chuck mounting base to move vertically.

18. The battery string repair device as described in claim 16, characterized in that: The second floating assembly includes a second guide post, a second spring, and a second chuck mounting base, wherein: The upper and lower ends of the second guide post are fixedly connected to the second guide mounting base, the second clamp mounting base is slidably fitted on the second guide post, the second spring is fitted on the second guide post, the upper end of the second spring abuts against the second guide mounting base, and the lower end of the second spring abuts against the second clamp mounting base; The second chuck is mounted on the second chuck mounting base, and the clamping end of the second chuck extends downward out of the second chuck mounting base.

19. The battery string repair device as described in claim 18, characterized in that, The elastic clamping assembly includes a fixing frame and a compression spring, wherein the fixing frame is disposed on the second guide mounting seat, the first end of the compression spring elastically abuts against the fixing frame, and the second end of the compression spring elastically abuts against the second clamp mounting seat; The compression spring elastically pushes the second chuck mounting base to rotate in the horizontal plane, so as to drive the second chuck to abut against the corresponding reference block.

20. The battery string repair device as described in claim 1, characterized in that, The battery string repair device further includes a first coating mechanism, which is configured to be movable to the repair platform for applying flux to the overlap portion of the first side solder strip of the replacement battery cell and the solder strip to be overlapped on the first side adjacent battery cell, and for applying flux to the overlap portion of the second side solder strip of the replacement battery cell and the solder strip to be overlapped on the second side adjacent battery cell.

21. The battery string repair device as described in claim 20, characterized in that, The first coating mechanism includes a coating drive assembly and a plurality of first coating pens, wherein: A plurality of first coating pens are arranged side by side at the drive end of the coating drive assembly, and each first coating pen is connected to the drive end of the coating drive assembly in a way that allows it to extend and retract vertically via an elastic buffer. Each first coating pen is used to apply flux to a part to be overlapped. The coating drive component is used to drive a plurality of first coating pens to translate and move up and down, so that each first coating pen contacts or detaches from the corresponding solder strip. The battery string repair device also includes a first liquid replenishment mechanism disposed on one side of the repair platform, the first liquid replenishment mechanism being used to replenish flux onto each of the first coating pens.

22. The battery string repair device as described in claim 1, characterized in that, The welding mechanism is a laser welding mechanism, which is located above the rework platform.

23. The battery string repair device as described in claim 1, characterized in that, The battery strings to be repaired also include a second type of battery strings to be repaired for poor soldering. The welding mechanism is also used to weld the poorly welded positions on at least one of the upper and lower surfaces of the second type of battery string to be repaired, which is supported on the repair platform, so as to re-weld the poorly welded solder strips onto the battery cells.

24. The battery string repair device as described in claim 23, characterized in that, The battery string repair device further includes a second coating mechanism, which is configured to be movable to the repair platform for applying flux to the poor solder joints on the upper surface of the second type of battery string to be repaired, which is supported on the repair platform.

25. The battery string repair device as described in claim 24, characterized in that, The second coating mechanism includes a seventh drive module, a fifth mounting bracket, and several coating components, wherein: The fifth mounting bracket is connected to the drive end of the seventh drive module; Several of the coating components are arranged side by side on the fifth mounting bracket, and each coating component is capable of applying flux to a solder strip; Each coating assembly includes a driving unit and a second coating pen. The driving unit is connected to the fifth mounting bracket, and the second coating pen is connected to the driving end of the driving unit. The driving unit is at least used to drive the second coating pen to move up and down, so that the second coating pen contacts or disengages from the corresponding solder strip.

26. The battery string repair device as described in claim 23, characterized in that, The battery string repair device also includes a feeding gripper and a feeding inspection mechanism; The feeding inspection mechanism is used to detect the defect type and location of the battery strings to be repaired; The feeding gripper is used to pick up the battery string to be repaired from the feeding inspection mechanism and feed the battery string to be repaired onto the repair platform.

27. The battery string repair device as described in claim 26, characterized in that, The feeding and inspection mechanism includes a feeding mechanism, a first gripper, a grading table, a first string inspection mechanism, a second gripper, a feeding EL inspection mechanism, a second string inspection mechanism, a transfer table, and a discharge box, wherein: The feeding mechanism is used to supply battery strings; The first gripper is used to transport the battery string supplied by the feeding mechanism to the straightening table, and the straightening table is used to straighten the battery string; The first string inspection mechanism is positioned above the straightening table and is used to inspect the appearance defects on the upper surface of the battery string; The second gripper is used to transport the battery string from the straightening table to above the loading EL inspection mechanism and the second string inspection mechanism, wherein the loading EL inspection mechanism is used to perform EL inspection on the battery string, and the second string inspection mechanism is used to inspect the appearance defects on the lower surface of the battery string; The second gripper is also used to place the battery strings to be repaired after inspection onto the transfer platform, and to place the battery strings that cannot be repaired after inspection into the discharge box. The feeding gripper picks up the battery string to be repaired from the transfer platform.

28. The battery string repair device as described in claim 26, characterized in that, The battery string repair device also includes a third coating mechanism, which is located on the moving path of the feeding gripper. The third coating mechanism is used to apply flux to the poor solder joints on the lower surface of the second type of battery string to be repaired on the feeding gripper.

29. The battery string repair device as described in claim 23, characterized in that, The battery string repair device also includes a clamping mechanism, which is located on one side of the repair platform. The clamping mechanism is used to press the solder strips with poor soldering in the second type of battery string to be repaired onto the corresponding battery cells.

30. The battery string repair device as described in claim 1, characterized in that, The battery string repair device includes a feeding gripper, an output EL detection mechanism, a receiving mechanism, an NG (non-compliant) material box, and a buffer material box, wherein: The unloading gripper is used to transfer the repaired battery string from the repair platform to above the discharge EL inspection mechanism; The discharge EL detection mechanism is used to detect the repaired battery strings to determine the type of the repaired battery strings. The types of the repaired battery strings include qualified repaired battery strings, unqualified repaired battery strings that cannot be repaired a second time, and unqualified repaired battery strings that can be repaired a second time. The feeding gripper is also used to send qualified reworked battery strings to the receiving mechanism, send unqualified reworked battery strings that cannot be reworked a second time to the NG box, send unqualified reworked battery strings that can be reworked a second time to the buffer box, and send unqualified reworked battery strings that can be reworked a second time from the buffer box to the rework platform.

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