Battery string repair apparatus

Abstract

A battery string repair apparatus, comprising 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 cutting off a 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 of the adjacent battery piece. The welding mechanism is used for welding the clamped welding strip of the replacement battery piece and the welding strip to be overlapped on the adjacent battery piece. The present application implements automatic preparation of the replacement battery piece, and automatically feeds the replacement battery piece to the repair position, thereby improving repair efficiency.

Description

Battery string repair device Technical Field

[0001] The present application relates to the field of photovoltaic module production, and specifically to a battery string repair device. Background Art

[0002] When a battery string contains a defective cell, the battery string can be repaired. Taking the battery string in Figure 1 as an example, the connecting ribbon between the defective cell 300 and its adjacent cell 400 is cut. The ribbon cut position is shown as the "×" position in Figure 1. The defective cell 300 is then removed from the battery string. A replacement cell 500 with a ribbon is then placed in the position vacated by the defective cell 300. The ribbon on the replacement cell 500 is then overlap-welded with the ribbon on the adjacent cell 400.

[0003] Existing battery string repair devices classify replacement cells into head replacement cells, middle replacement cells, and tail replacement cells, depending on the position of the defective cell to be replaced in the battery string (beginning, middle, or end of the string). The lengths of the solder ribbons extending from the cell may vary between the three types of replacement cells. For example, the solder ribbons on the upper and lower surfaces of the tail replacement cell shown in Figure 2 (a) extend beyond the cell by a certain length. For the middle replacement cell shown in Figure 2 (b), the solder ribbons on the upper surface do not need to extend beyond the cell, but the solder ribbons on the lower surface do.

[0004] The pre-prepared initial cell has the same length of solder ribbons on both the top and bottom surfaces extending beyond the cell. Therefore, if the solder ribbons on both sides of the initial cell do not extend to the required length for the replacement cell, the solder ribbons on the initial cell must be cut to obtain a replacement cell of the desired type, which can then be loaded into the rework location.

[0005] Traditional battery string repair equipment is unable to cut the solder ribbons on the original battery cells. The current solution is to manually cut the solder ribbons on the original battery cells offline to obtain the required type of replacement battery cells, and then manually load the replacement battery cells into the battery string repair equipment. This low level of automation leads to low battery string repair efficiency. Summary of the Invention

[0006] In response to the above technical problems, this application provides a battery string repair device, the detailed technical solution of which is as follows:

[0007] A battery string repair device includes a repair platform, a replacement battery cell preparation mechanism, a replacement battery cell loading mechanism, a first solder ribbon shearing mechanism, a first solder ribbon clamping mechanism, and a welding mechanism, wherein:

[0008] The repair platform is used to carry battery strings to be repaired, and the battery strings to be repaired include at least a first type of battery strings to be repaired in which cells need to be replaced;

[0009] A first solder ribbon cutting mechanism is provided on one side of the repair platform, and is used to cut the solder ribbon between a defective cell to be replaced and an adjacent cell in a first type of cell string to be repaired, wherein the adjacent cell includes at least one of a first-side adjacent cell and a second-side adjacent cell.

[0010] The replacement cell preparation mechanism is used to process an initial cell into a replacement cell, wherein the upper surface of the initial cell is connected to a first side welding ribbon extending outwardly from a first side of the initial cell, and the lower surface of the initial cell is connected to a second side welding ribbon extending outwardly from a second side of the initial cell. The replacement cell preparation mechanism is configured to cut at least one of the first side welding ribbon and the second side welding ribbon to obtain a replacement cell, wherein the replacement cell includes at least one of a head replacement cell, a middle replacement cell, and a tail replacement cell.

[0011] 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 repair platform at a defective position in the first type of battery string to be repaired, where the defective position is the position left vacant after the defective cell is removed from the first type of battery string to be repaired;

[0012] The first solder strip clamping mechanism is provided on one side of the rework platform, and is used to clamp the solder strip on the first side of the replacement cell located at the defective position and the solder strip to be overlapped on the adjacent cell on the first side, and is used to clamp the solder strip on the second side of the replacement cell located at the defective position and the solder strip to be overlapped on the adjacent cell on the second side;

[0013] The welding mechanism is arranged on one side of the rework platform, and is used to weld together the first side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the first side, and to weld together the second side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the second side.

[0014] By cooperating with a replacement cell feeding mechanism, a first solder strip shearing mechanism, a first solder strip clamping mechanism, and a welding mechanism, the battery string repair device of the present application realizes the replacement and repair of defective cells in a cell string. In particular, by providing a replacement cell preparation mechanism and a replacement cell feeding mechanism, the battery string repair device of the present application realizes the automatic shearing of the solder strips on the initial cell to obtain a replacement cell of the desired type, and automatically loads the replacement cell to the repair position, thereby improving the efficiency of the cell string repair.

[0015] In some embodiments, the replacement battery cell preparation mechanism includes a feeding mechanism, a transfer mechanism, a supporting platform, a second welding ribbon clamping mechanism, a second welding ribbon cutting mechanism and a cache platform, wherein: the feeding mechanism is used to supply the initial battery cell; the transfer mechanism is used to pick up the initial battery cell from the feeding mechanism and transfer the initial battery cell to the supporting platform; the supporting platform is used to adsorb and fix the initial battery cell; the second welding ribbon clamping mechanism is located on one side of the supporting platform, and the second welding ribbon clamping mechanism is used to clamp the end of the welding ribbon on the side of the initial battery cell close to the second welding ribbon clamping mechanism; the second welding ribbon cutting mechanism is used to cut the end of the welding ribbon on the clamped initial battery cell to obtain a replacement battery cell; the transfer mechanism is also used to transfer the replacement battery cell to the cache platform; the replacement battery cell loading mechanism is used to pick up the replacement battery cell from the cache platform.

[0016] Through the cooperation of the feeding mechanism, the transfer mechanism, the supporting platform, the second solder strip clamping mechanism, the second solder strip cutting mechanism and the cache platform, the replacement battery cell preparation mechanism realizes the automatic cutting of the ends of the solder strip group on the initial battery cell to automatically prepare a replacement battery cell for rework, and can also cache the replacement battery cell on the cache platform, so that the replacement battery cell loading mechanism can obtain the replacement battery cell from the cache platform, thereby improving the loading efficiency of the replacement battery cell, and then improving the battery string rework efficiency.

[0017] In some embodiments, the second solder ribbon cutting mechanism is further used to cut the end portion of the solder ribbon on the side of the initial battery cell away from the second solder ribbon clamping mechanism.

[0018] Depending on the type of replacement cell to be prepared, when it is necessary to cut the solder ribbons on both sides of the initial cell, the second solder ribbon cutting mechanism can be used to cut the solder ribbon on the other side of the initial cell again. The structural design is simple and the cost is low.

[0019] In some embodiments, the feeding mechanism includes a material basket conveying mechanism, a lifting mechanism, a docking conveying mechanism and a material picking mechanism, wherein: the material basket conveying mechanism is arranged below the material picking mechanism; the lifting mechanism is arranged between the material 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 conveying mechanism to descend to the basket changing station so that the docking conveying mechanism docks with the material basket conveying mechanism; the material basket conveying mechanism is configured to convey the material basket full of initial battery cells to the docking conveying mechanism or receive the empty material basket output by the docking conveying mechanism; the lifting mechanism is also configured to drive the docking conveying mechanism to rise to the film picking station so that the initial battery cell located at the bottom of the material basket is higher than the material picking mechanism; the material picking mechanism is configured to extend into the material basket, and the lifting mechanism is also configured to drive the docking conveying mechanism to descend so that the initial battery cell located at the bottom of the material basket in the material basket falls onto the material picking mechanism, and the material picking mechanism is also configured to take the initial battery cell out of the material basket; the transfer mechanism picks up the initial battery cell from the material picking mechanism.

[0020] Through the cooperation of the basket conveying mechanism, the lifting mechanism, the docking conveying mechanism and the material taking mechanism, the feeding mechanism realizes the automatic removal of the initial battery cells in the basket, thereby realizing the automatic feeding of the initial battery cells.

[0021] In some embodiments, the feeding mechanism further includes a tidying mechanism disposed on the side of the taking mechanism, and the tidying mechanism is used to correct the position of the initial battery cells taken out from the material basket.

[0022] By setting a regularization mechanism on the side of the material taking mechanism, the position of the taken out initial battery cells is corrected, and finally it is ensured that the transfer mechanism can smoothly pick up the initial battery cells from the material taking mechanism.

[0023] In some embodiments, the material picking mechanism includes a material picking drive unit and a material picking sheet, wherein the material picking sheet is connected to the driving end of the material picking drive unit. When the material picking drive unit drives the material picking sheet to extend into the material basket, the initial battery cell located at the bottom of the material basket falls onto the material picking sheet and is adsorbed by the material picking sheet; when the material picking drive unit drives the material picking sheet to withdraw from the material basket, the initial battery cell is taken out of the material basket.

[0024] A material taking mechanism with a simple structure is provided, which takes out initial battery cells from a material basket by driving a material taking piece through a material taking driving part. The material taking speed is fast and the taken out initial battery cells can be prevented from slipping.

[0025] In some embodiments, the transfer mechanism includes a first drive module and a first adsorption component connected to the drive end of the first drive module, wherein the first adsorption component is used to adsorb the initial battery cell or the replacement battery cell, and the first drive module is used to drive the first adsorption component to translate and lift, and to drive the first adsorption component to rotate in a horizontal plane.

[0026] The first drive module drives the first adsorption member to translate and elevate, thereby driving the first adsorption member to adsorb the initial battery cell or the replacement battery cell and transport the initial battery cell or the replacement battery cell. When the first drive module drives the first adsorption member to rotate, the angle of the initial battery cell or the replacement battery cell can be adjusted.

[0027] In some embodiments, the second welding strip clamping mechanism includes a second driving module, a first mounting bracket and a clamping assembly, wherein: the first mounting bracket is connected to the driving end of the second driving module, and the clamping assembly is arranged on the first mounting bracket; the second driving module is used to drive the clamping assembly to move laterally to approach or move away from the supporting platform, and the clamping assembly is used to clamp the end of the first side welding strip or the end of the second side welding strip on the initial battery cell; the second driving module is also used to drive the clamping assembly to rise and fall, so that a shear angle is formed between the end of the clamped first side welding strip or the end of the second side welding strip and the initial battery cell.

[0028] The second drive module drives the clamping assembly to move laterally, ensuring that the clamping assembly can align 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 upward and downward, so that the clamped end of the first side solder strip or the end of the second side solder strip forms a shearing angle with the initial solar cell, ensuring that the second solder strip shearing mechanism can smoothly cut the end of the first side solder strip or the end of the second side solder strip.

[0029] In some embodiments, the second welding ribbon shearing mechanism includes a third driving module, a second mounting bracket, a fixed cutter, a movable cutter and a cutter driving member, wherein: the second mounting bracket is connected to the driving end of the third driving module; the fixed cutter is fixedly connected to the second mounting bracket, and a plurality of hook knives are arranged side by side at the lower edge of the fixed cutter, and a supporting inclined surface for supporting the welding ribbon is formed on the hook-shaped portion of the hook knife, and a fixed blade is formed at the upper end of the supporting inclined surface; the movable cutter is slidably connected to the second mounting bracket and fits with the fixed cutter, and a movable blade that cooperates with each fixed blade is formed at the lower edge of the movable cutter; the driving end of the cutter driving member is connected to the movable cutter, and the cutter driving member 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 shearing position; when the movable cutter slides to the avoidance position, a gap for the welding ribbon to pass through is formed between the movable blade and each fixed blade; when the movable cutter slides to the shearing position, the movable blade cooperates with each fixed blade to shear the welding ribbon passing therebetween.

[0030] The second welding ribbon shearing mechanism is configured to shear flat welding ribbons. By inserting a hook-shaped blade beneath the ribbon and supporting the inclined ribbon with the support slope, the fixed blade shears the ribbon along its thickness, ensuring that the flat ribbon remains in its original shape after shearing, without distortion, and that the cut surface is smooth and burr-free. Of course, this shearing assembly is also suitable for shearing round welding ribbons.

[0031] In some embodiments, the replacement battery cell preparation mechanism also includes a first detection mechanism; the transfer mechanism is configured to pick up the 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 at least configured to perform position detection and defect detection on the initial battery cells to obtain position information of the initial battery cells and quality information of the initial battery cells; the transfer mechanism is also configured to transfer the initial battery cells from the first detection mechanism to a carrying table or a cache table, and the transfer mechanism is also configured to regularize the initial battery cells based on the position information of the initial battery cells during the transfer process.

[0032] By setting up the first detection mechanism, the position detection and quality detection of the initial battery cells are realized, so that the transfer mechanism 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 regularized according to the detection results for subsequent use.

[0033] In some embodiments, the first detection mechanism includes at least one of a visual detection mechanism and an EL detection mechanism.

[0034] The internal and external defects of the initial battery cells can be detected, thus preventing defective initial battery cells from flowing into the subsequent processes.

[0035] In some embodiments, the replacement battery cell preparation mechanism also includes a second detection mechanism, and the cache table is arranged on a fourth drive module. The fourth drive module is used to drive the cache table to translate the replacement battery cell to be inspected 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 loading mechanism picks up the replacement battery cell that has been inspected by the second detection mechanism from the cache table.

[0036] The position detection and defect detection of the completed replacement battery cells are realized, thereby preventing defective replacement battery cells from flowing into the subsequent repair process.

[0037] In some embodiments, the cache station includes a first cache station, a second cache station and a third cache station arranged side by side, wherein: the first cache station is used to cache the head replacement battery cells transported by the transfer mechanism, and the head replacement battery cells are used to replace the defective battery cells located at the head of the battery string to be repaired; the second cache station is used to cache the tail replacement battery cells transported by the transfer mechanism, and the tail replacement battery cells are used to replace the defective battery cells located at the tail of the battery string to be repaired; the third cache station is used to cache the middle replacement battery cells transported by the transfer mechanism, and the middle replacement battery cells are used to replace the defective battery cells located between the head battery cells and the tail battery cells in the battery string to be repaired.

[0038] The three types of replacement battery cells are classified and cached, so that the replacement battery cell feeding mechanism can accurately obtain the required type of replacement battery cells according to the needs of subsequent repairs.

[0039] In some embodiments, the replacement battery 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 arranged on the third mounting bracket; the fifth drive module is used to drive the second adsorption member to move horizontally and vertically, so as to drive the second adsorption member to absorb the replacement battery cell from the replacement battery cell preparation mechanism, and load the replacement battery cell onto the rework platform.

[0040] A replacement battery cell loading mechanism with a simple structure is provided, which drives the second adsorption component to move horizontally and vertically through the fifth drive module, so as to drive the second adsorption component to absorb the replacement battery cell from the replacement battery cell preparation mechanism and load the replacement battery cell onto the rework platform.

[0041] In some embodiments, the rework platform includes a mounting seat, an intermediate soldering station, a first side soldering station and a second side soldering station, wherein: the intermediate soldering station can be mounted on the mounting seat in a vertically flippable manner, and the intermediate soldering station is used to carry and absorb defective battery cells and replacement battery cells in the battery string to be reworked; the first side soldering station is movably mounted on the mounting seat, and the first side soldering station is used to carry the battery cells on the first side of the defective battery cells and can at least absorb the adjacent battery cells on the first side, and the first side soldering station is configured to be able to translate toward or away from the intermediate soldering station to achieve docking and separation with the intermediate soldering station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate soldering station; the second side soldering station is movably mounted on the mounting seat, and the second side soldering station is used to carry the battery cells on the second side of the defective battery cells and can at least absorb the adjacent battery cells on the second side, and the second side soldering station is configured to be able to translate toward or away from the intermediate soldering station to achieve docking and separation with the intermediate soldering station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the intermediate soldering station.

[0042] In the initial state, the middle soldering station, the first side soldering station and the second side soldering station are connected in the horizontal direction and aligned in the vertical direction. The surfaces of the middle soldering station, the first side soldering station and the second side soldering station are connected to form a continuous horizontal soldering table. For the first type of battery string to be repaired, the first type of battery string to be repaired is first placed on the horizontal soldering table, and the defective battery cell is adsorbed on the middle soldering station, and the adjacent battery cells on both sides of the defective battery cell are adsorbed on the first side soldering station and the second side soldering station respectively. Then, the first side soldering station and the second side soldering station are controlled to rise or fall, so that the first side soldering station, the second side soldering station and the middle soldering station are staggered in the vertical direction. At this time, the first solder strip shearing mechanism can easily cut the solder strip between the defective battery cell and the adjacent battery cell. After the solder strip is cut, the first side soldering station and the second side soldering station are controlled to move away horizontally, and then the middle soldering station is controlled to flip, so that the defective battery cell that has been disassembled is removed from the middle soldering station. That is, by configuring the rework platform, the rework platform can cooperate with the first solder ribbon shearing mechanism to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0043] In some embodiments, the rework platform further includes a cleaning mechanism disposed on a side of the intermediate soldering platform; the cleaning mechanism is configured to clean impurities on the intermediate soldering platform after the defective battery cell is removed from the intermediate soldering platform.

[0044] When defective cells are removed from the first group of repaired strings, impurities such as solder debris and cell debris are deposited on the intermediate soldering station. If not cleaned promptly, these impurities will affect the quality of subsequent repairs. A cleaning mechanism on the side of the intermediate soldering station ensures the timely removal of impurities.

[0045] In some embodiments, the first welding ribbon clamping mechanism includes a sixth driving module, a fourth mounting bracket, an opening and closing driving mechanism, a first guide mounting seat, a second guide mounting seat, an elastic clamping mechanism and several groups of first chucks and second chucks arranged in pairs, wherein: the fourth mounting bracket is connected to the driving end of the sixth driving module, and the sixth driving module is used to drive the fourth mounting bracket to move; the opening and closing driving mechanism is installed on the fourth mounting bracket, and the first guide mounting seat and the second guide mounting seat are both connected to the driving end of the opening and closing driving mechanism; the first chucks are arranged side by side, and each first chuck is connected to the first guide mounting seat by a first floating component and can float up and down; the second chucks are arranged side by side, and each second chuck is connected to the second guide mounting seat by a second floating component and can float up and down, and can rotate in a horizontal plane relative to the second guide mounting seat; the elastic clamping mechanism is installed on the second guide mounting seat The elastic pressing mechanism includes several elastic pressing components corresponding to the second clamps one by one, and a reference block is respectively provided on the second guide mounting seat corresponding to each second clamp, and the elastic pressing component is used to elastically push the corresponding second clamp to rotate in the horizontal plane to rest 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 pressing component can also elastically deform when subjected to the reverse force of the corresponding second clamp; the opening and closing driving mechanism is used to drive the first guide mounting seat and the second guide mounting seat to move closer to the middle after the clamping end of the second clamp is aligned with the clamping end of the corresponding first clamp, so that the clamping end of the second clamp cooperates with the clamping end of the corresponding first clamp to clamp the welding strip; the opening and closing driving 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 clamp and the clamping end of the corresponding first clamp release the welding strip.

[0046] A first soldering ribbon clamping mechanism is provided, wherein each first clamp and each second clamp can be connected to the corresponding guide mounting seat in a floating manner up and down. With such a configuration, the first clamp and the second clamp can realize adaptive adjustment of the relative positions in the height direction after they descend and contact the battery cell, thereby ensuring that the first clamp and the second clamp can be aligned in the height direction; at the same time, by providing an elastic pressing mechanism and a reference block, the first soldering ribbon 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 can be aligned before clamping the soldering ribbon By keeping it aligned with the clamping end of the first clamp, when there are no tin beads on the soldering ribbon, the gap between the two soldering ribbons after being clamped can be reduced or eliminated; on the other hand, even if there are tin beads on the soldering ribbon, the tin beads can force the second clamp to rotate after clamping, causing the elastic pressing component to elastically deform. When the tin beads melt again during the welding process, the second clamp can be rotated back to the reference position under the action of the elastic pressing component, thereby reducing or eliminating the gap between the two soldering ribbons, and finally making it possible for the two soldering ribbons to smoothly climb tin and achieve overlap during the welding process, thereby ensuring the quality of the lap weld.

[0047] In some embodiments, the first floating assembly includes a first guide column, a first spring, a first chuck mounting seat and a floating guide assembly, wherein: the upper and lower ends of the first guide column are respectively fixedly connected to the first guide mounting seat, the first chuck mounting seat is slidably sleeved on the first guide column, the first spring is sleeved on the first guide column, the upper end of the first spring abuts against the first guide mounting seat, and the lower end of the first spring abuts against the first chuck mounting seat; the first chuck is mounted on the first chuck mounting seat, and the clamping end of the first chuck extends downward from the first chuck mounting seat; the floating guide assembly is arranged between the first chuck mounting seat and the first guide mounting seat, for limiting the first chuck mounting seat to vertical movement.

[0048] A simple first floating assembly is provided. This assembly, through the expansion and contraction of a first spring, achieves a floating connection between the first chuck mounting base and the first guide mounting base. This allows the first chuck to adaptively adjust its relative height position after descending to contact the cell. Furthermore, the provision of a floating guide assembly allows the first chuck to float only along the first guide post and not around it. This prevents the first chuck from deflecting after floating in height, ultimately ensuring that the clamping end of the second chuck is aligned with the clamping end of the first chuck after abutting the reference block.

[0049] In some embodiments, the second floating assembly includes a second guide column, a second spring and a second chuck mounting seat, wherein: the upper and lower ends of the second guide column are respectively fixedly connected to the second guide mounting seat, the second chuck mounting seat is slidably sleeved on the second guide column, the second spring is sleeved on the second guide column, the upper end of the second spring abuts against the second guide mounting seat, and the lower end of the second spring abuts against the second chuck mounting seat; the second chuck is installed on the second chuck mounting seat, and the clamping end of the second chuck extends downward from the second chuck mounting seat.

[0050] A second floating assembly with a simple structure is provided, which realizes a floating connection between the second clamp mounting seat and the second guide mounting seat through the expansion and contraction adjustment of the second spring, so that the second clamp can realize adaptive adjustment of the relative position in the height direction after it descends and contacts the battery cell, and the second clamp mounting seat can also rotate around the second guide column after being subjected to force, driving the second clamp to realize rotation in the horizontal plane.

[0051] In some embodiments, the elastic clamping assembly includes a fixing frame and a compression spring, wherein the fixing frame is arranged on the second guide mounting seat, the first end of the compression spring elastically rests on the fixing frame, and the second end of the compression spring elastically rests on the second chuck mounting seat; the compression spring elastically pushes the second chuck mounting seat to rotate in the horizontal plane to drive the second chuck to rest on the corresponding reference block.

[0052] The compression spring pushes the second clamp mounting seat by its own elastic force, so that the second clamp is kept against the corresponding reference block.

[0053] In some embodiments, the battery string rework device also includes a first coating mechanism, which is configured to be movable to the rework platform for coating flux on the overlapping portion between 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 coating flux on the overlapping portion between the second side solder strip of the replacement battery cell and the solder strip to be overlapped on the second side adjacent battery cell.

[0054] Before welding the first side welding ribbon of the replacement cell to the welding ribbon to be overlapped on the adjacent cell on the first side, the first coating mechanism first applies flux to the overlapping portion of the first side welding ribbon of the replacement cell and the welding ribbon to be overlapped on the adjacent cell on the first side, thereby ensuring the welding quality of the first side welding ribbon of the replacement cell and the welding ribbon to be overlapped on the adjacent cell on the first side. Similarly, before welding the second side welding ribbon of the replacement cell to the welding ribbon to be overlapped on the adjacent cell on the second side, the first coating mechanism first applies flux to the overlapping portion of the second side welding ribbon of the replacement cell and the welding ribbon to be overlapped on the adjacent cell on the second side, thereby ensuring the welding quality of the second side welding ribbon of the replacement cell and the welding ribbon to be overlapped on the adjacent cell on the second side.

[0055] In some embodiments, the first coating mechanism includes a coating drive 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 drive assembly, and each first coating pen is connected to the driving end of the coating drive assembly telescopically up and down via an elastic buffer, and each first coating pen is used to apply flux to a location to be overlapped; the coating drive assembly is used to drive the plurality of first coating pens to move horizontally and vertically, so that each first coating pen contacts or detaches from the corresponding solder strip; the battery string rework device also includes a first fluid replenishing mechanism arranged on one side of the rework platform, and the first fluid replenishing mechanism is used to replenish flux to each first coating pen.

[0056] The first coating mechanism uses a coating pen to apply flux to the solder ribbon, enabling spot coating. Compared to spray coating, it offers higher coating accuracy and saves more flux. Each coating pen is telescopically connected to the drive end of the coating drive assembly, ensuring that each pen contacts the corresponding solder ribbon after descending, ensuring that all solder ribbons are effectively coated with flux.

[0057] In some embodiments, the welding mechanism is a laser welding mechanism, which is disposed above the rework platform.

[0058] The laser welding mechanism performs repair welding in a non-contact manner, which can achieve targeted welding of the overlapping parts. The welding temperature is controllable, the thermal impact on the battery cell is small, and the welding quality is high.

[0059] In some embodiments, the battery string to be repaired also includes a second type of battery string to be repaired with cold welds to be repaired; the welding mechanism is also used to weld the cold weld positions on at least one of the upper surface and the lower surface of the second type of battery string to be repaired carried on the repair platform, so as to re-weld the cold welded solder strips to the battery cells.

[0060] The second type of battery strings to be repaired with cold solder joint defects can be repaired by repairing the cold solder joints.

[0061] In some embodiments, the battery string repair device further includes a second coating mechanism, which is configured to be movable to the repair platform for coating flux on the upper surface cold solder joint positions of the second type of battery string to be repaired carried on the repair platform.

[0062] By setting up the second coating mechanism, flux coating is achieved on the upper surface of the second type of battery string to be repaired, thereby improving the repair quality of the second type of battery string to be repaired.

[0063] In some embodiments, the second coating mechanism includes a seventh driving module, a fifth mounting bracket and several coating components, wherein: the fifth mounting bracket is connected to the driving end of the seventh driving module; several coating components are arranged side by side on the fifth mounting bracket, and each coating component can apply flux to a solder strip; the coating components each include a driving part and a second coating pen, the driving part is connected to the fifth mounting bracket, and the second coating pen is connected to the driving end of the driving part, and the driving part is at least used to drive the second coating pen to rise and fall, so that the second coating pen contacts or detaches from the corresponding solder strip.

[0064] The second coating mechanism uses a coating pen to apply flux to the ribbon, enabling spot coating. Compared to spray coating, it offers higher coating accuracy and saves more flux. Each coating pen is independently driven by its own drive unit. When each coating pen is moved over the target ribbon, the coating pen corresponding to the ribbon with a cold solder joint can be individually controlled to descend for targeted coating, while the remaining coating pens are kept away from the corresponding ribbon. This allows for precise spot coating of the cold solder joint, avoids contamination of other ribbon areas, and further conserves flux.

[0065] In some embodiments, the battery string rework device further includes a loading gripper and a feeding detection mechanism; the feeding detection mechanism is used to detect the defect type and defect location of the battery string to be repaired; the loading gripper is used to pick up the battery string to be repaired from the feeding detection mechanism and load the battery string to be repaired onto the rework platform.

[0066] By setting up a feeding detection 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.

[0067] In some embodiments, the feeding inspection mechanism includes a feeding mechanism, a first gripper, a regularization 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 regularization table, and the regularization table is used to regularize the battery strings; the first string inspection mechanism is arranged above the regularization table, and is used to detect appearance defects on the upper surface of the battery string; the second gripper is used to transport the battery string from the regularization 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 string, and the second string inspection mechanism is used to detect appearance defects on the lower surface of the battery string;

[0068] The second gripper is also used to place the battery strings that are determined to be repaired after testing on the transfer table, and to place the battery strings that are determined to be unable to be repaired after testing into the discharge box; the loading gripper picks up the battery strings that are determined to be repaired from the transfer table.

[0069] By setting up the feeding detection mechanism, the feeding detection mechanism can realize the detection of cold solder joints, internal defects and appearance defects of the battery strings, so as to determine whether the battery string belongs to the battery string to be repaired or the battery string that cannot be repaired, and determine the defect type and defect location of the battery string to be repaired. In addition, the feeding detection mechanism can also place the determined battery string to be repaired on the transfer table, and place the battery string that cannot be repaired into the discharge box.

[0070] In some embodiments, the battery string repair device also includes a third coating mechanism, which is located on the moving path of the loading gripper, and the third coating mechanism is used to coat flux on the lower surface of the second type of battery string to be repaired on the loading gripper.

[0071] By setting up the third coating mechanism, flux coating is achieved on the cold solder joint positions on the lower surface of the second type of battery strings to be repaired, thereby improving the quality of the cold solder joint repair of the second type of battery strings to be repaired.

[0072] In some embodiments, the battery string repair device further includes a clamping mechanism, which is disposed on one side of the repair platform and is used to clamp the solder strips with cold solder joints in the second type of battery string to be repaired onto the corresponding battery cells.

[0073] The solder strips with cold solder joints in the second type of battery strings to be repaired are pressed onto the corresponding battery cells by a pressing mechanism to ensure that the solder strips with cold solder joints can be re-soldered to the corresponding battery cells.

[0074] In some embodiments, the battery string rework device includes a unloading gripper, an EL discharging detection mechanism, a receiving mechanism, an NG material box and a cache material box, wherein: the unloading gripper is used to transfer the repaired battery string from the rework platform to the top of the discharging EL detection mechanism; the discharging EL detection mechanism is used to detect the repaired battery string to determine the type of the repaired battery string, and the types of the repaired battery strings include battery strings that pass the rework, battery strings that fail the rework and cannot be reworked a second time, and battery strings that fail the rework and can be reworked a second time; the unloading gripper is also used to send the battery strings that pass the rework to the receiving mechanism, send the battery strings that fail the rework and cannot be reworked a second time to the NG material box, send the battery strings that fail the rework and can be reworked a second time to the cache material box, and send the battery strings that fail the rework and can be reworked a second time in the cache material box to the rework platform.

[0075] By setting up a material unloading gripper, a material discharging EL detection mechanism, a material receiving mechanism, an NG material box and a cache material box, the inspection of the repaired battery strings is realized to determine the type of the repaired battery strings; in addition, the classified collection of three different types of repaired battery strings is also realized. In particular, the battery strings that fail the repair and can be repaired a second time are sent back to the repair platform for secondary repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0076] Figure 1 is a schematic diagram of battery string repair;

[0077] Figure 2 is a schematic diagram of the structures of two replacement battery cells;

[0078] FIG3 is a schematic structural diagram of a battery string repair device according to an embodiment of the present application from one viewing angle;

[0079] FIG4 is a schematic structural diagram of the battery string repair device according to an embodiment of the present application from another perspective;

[0080] FIG5 is a partial enlarged view of area A in FIG4 ;

[0081] FIG6 is a partial enlarged view of area B in FIG4 ;

[0082] FIG7 is a partial enlarged view of area C in FIG4 ;

[0083] FIG8 is a schematic structural diagram of a feeding mechanism in an embodiment of the present application;

[0084] FIG9 is a schematic structural diagram of a transfer mechanism in an embodiment of the present application;

[0085] FIG10 is a schematic structural diagram of the supporting platform, the second welding ribbon clamping mechanism, and the second welding ribbon shearing mechanism in an embodiment of the present application;

[0086] FIG11 is a schematic structural diagram of the second welding ribbon clamping mechanism in an embodiment of the present application at one viewing angle;

[0087] FIG12 is a schematic structural diagram of the second welding ribbon clamping mechanism in another embodiment of the present application;

[0088] FIG13 is a cross-sectional view taken along line AA of FIG12 ;

[0089] FIG14 is a schematic structural diagram of a second welding ribbon shearing mechanism in an embodiment of the present application;

[0090] FIG15 is a schematic structural diagram of a replacement battery cell loading mechanism in an embodiment of the present application;

[0091] FIG16 is a schematic structural diagram of components such as a rework platform, a first solder ribbon shearing mechanism, and a first solder ribbon clamping mechanism in an embodiment of the present application;

[0092] FIG17 is a schematic structural diagram of the first welding ribbon clamping mechanism in an embodiment of the present application at a first viewing angle;

[0093] FIG18 is a schematic structural diagram of the first solder ribbon clamping mechanism in an embodiment of the present application from a second viewing angle;

[0094] FIG19 is a schematic structural diagram of the first welding ribbon clamping mechanism in the embodiment of the present application from a third viewing angle;

[0095] FIG20 is a schematic structural diagram of the first welding ribbon clamping mechanism in an embodiment of the present application at a fourth viewing angle;

[0096] FIG21 is a partial enlarged view of the D area in FIG20;

[0097] FIG22 is a schematic structural diagram of a first chuck and a second chuck in an embodiment of the present application;

[0098] FIG23 is a schematic structural diagram of the first coating mechanism in an embodiment of the present application at a first viewing angle;

[0099] FIG24 is a schematic structural diagram of the first coating mechanism in an embodiment of the present application from a second viewing angle;

[0100] FIG25 is a sectional view taken along line BB of FIG24 ;

[0101] Figure 26 is a structural schematic diagram of the second coating mechanism in an embodiment of the present application.

[0102] Figures 1 to 26 include:

[0103] Rework platform 1: mounting base 11, middle soldering platform 12, first side soldering platform 13, second side soldering platform 14, flip drive mechanism 15, first side soldering platform drive mechanism 16, second side soldering platform drive mechanism 17;

[0104] Replacement battery cell preparation mechanism 2: feeding mechanism 21, material basket conveying mechanism 211, empty material basket conveying unit 2111, full material basket conveying unit 2112, transverse movement drive unit 2113, lifting mechanism 212, docking conveying mechanism 213, material picking mechanism 214, material picking drive unit 2141, material picking sheet 2142, regularization mechanism 215, transfer mechanism 22, first drive module 221, first adsorption member 222, X-axis drive module 2211, Y-axis drive module 2212, Z-axis drive module 2213, rotation drive module 2214 , carrying platform 23, second welding ribbon clamping mechanism 24, second driving module 241, first mounting bracket 242, clamping assembly 243, pressure plate 2431, rotating shaft 2432, clamping claw 2433, clamping claw driving member 2434, second welding ribbon shearing mechanism 25, second mounting bracket 251, fixed cutter 252, movable cutter 253, cutter driving member 254, hook knife 255, buffering platform 26, first buffering platform 261, second buffering platform 262, third buffering platform 263, first detection mechanism 27, second detection mechanism 28;

[0105] Replace the battery cell feeding mechanism 3: the fifth drive module 31, the third mounting bracket 32, and the second adsorption member 33;

[0106] First welding strip shearing mechanism 4;

[0107] First welding ribbon clamping mechanism 5: fourth mounting bracket 51, opening and closing drive mechanism 52, first guide mounting seat 53, second guide mounting seat 54, elastic pressing mechanism 55, elastic pressing 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 assembly 58, first spring 581, first clamp mounting seat 582, floating guide assembly 583, second floating assembly 59, second clamp mounting seat 591;

[0108] Welding mechanism 6;

[0109] First coating mechanism 7: coating drive assembly 71, mounting plate 72, first coating pen 73, elastic buffer 74, limit screw 741, mounting seat 742, floating groove 743, spring 744;

[0110] Second coating mechanism 8: fifth mounting bracket 81, mounting back plate 811, adapter plate 812, adapter plate drive assembly 813, coating assembly 82, drive unit 821, second coating pen 822;

[0111] Loading gripper 9;

[0112] Feed detection mechanism 10: first gripper 101, aligning table 102, second gripper 103, feeding EL detection mechanism 104, discharge box 106;

[0113] A third coating mechanism 110;

[0114] a pressing mechanism 120;

[0115] Unloading gripper 130;

[0116] Discharge EL detection mechanism 140;

[0117] First fluid replenishing mechanism 180;

[0118] Second fluid replenishing mechanism 150;

[0119] NG material box 160;

[0120] Cache material box 170;

[0121] First welding ribbon 100 , second welding ribbon 200 , defective battery cell 300 , adjacent battery cell 400 , replacement battery cell 500 , and material basket 600 . DETAILED DESCRIPTION

[0122] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0123] As shown in Figures 3 to 7, the battery string repair device provided in this application includes a repair platform 1, a replacement battery cell preparation mechanism 2, a replacement battery cell loading mechanism 3, a first welding ribbon shearing mechanism 4, a first welding ribbon clamping mechanism 5 and a welding mechanism 6, wherein:

[0124] The repair platform 1 is used to carry battery strings to be repaired, and the battery strings to be repaired include at least a first type of battery strings to be repaired whose cells need to be replaced.

[0125] The first solder ribbon cutting mechanism 4 is provided on one side of the repair platform 1 and is used to cut the solder ribbon between the defective cell to be replaced and the adjacent cell in the first type of cell string to be repaired. The adjacent cell includes at least one of a first-side adjacent cell and a second-side adjacent cell. The adjacent cell refers to the cell adjacent to the defective cell in the cell string, and the first-side adjacent cell and the second-side adjacent cell refer to the adjacent cells located on the first and second sides of the defective cell in the cell string, respectively.

[0126] The replacement cell preparation mechanism 2 is used to process initial cells into replacement cells. The initial cell has a first side welding ribbon connected to its upper surface, extending outwardly from a first side of the initial cell, and a second side welding ribbon connected to its lower surface, extending outwardly from a second side of the initial cell. The replacement cell preparation mechanism 2 is configured to shear at least one of the first side welding ribbon and the second side welding ribbon to obtain replacement cells. The replacement cells include at least one of a head replacement cell, a middle replacement cell, and a tail replacement cell.

[0127] The initial cell can be pre-welded, with the first and second side ribbons welded to the top and bottom surfaces of the cell, respectively. Alternatively, the initial cell can be pre-bonded, with the first and second side ribbons bonded to the top and bottom surfaces of the cell, respectively, using glue or tape. The method of connecting the ribbons to the cell in the initial cell will depend on how the ribbons are connected to the cell in the cell string to be repaired.

[0128] To ensure that the original cell can be sheared and prepared into a head, middle, or tail replacement cell as needed for rework, the length of the first and second side solder ribbons on the original cell extending from the original cell must be at least equal to the length of the longer solder ribbon group on any of the head, middle, or tail replacement cells extending from the replacement cell. During the preparation process, depending on the specific type of replacement cell being prepared, the replacement cell preparation mechanism 2 may choose to shear either the first or second side solder ribbons, or both.

[0129] The replacement cell loading mechanism 3 is used to pick up replacement cells from the replacement cell preparation mechanism 2, and to load the picked-up replacement cells to the defective position in the first type of cell string to be repaired on the repair platform 1. The defective position is the position vacated after the defective cells are removed from the first type of cell string to be repaired.

[0130] The first solder strip clamping mechanism 5 is arranged on one side of the rework platform 1, and is used to clamp the first side solder strip of the replacement battery cell located at the defective position and the solder strip to be overlapped on the adjacent battery cell on the first side, and to clamp the second side solder strip of the replacement battery cell located at the defective position and the solder strip to be overlapped on the adjacent battery cell on the second side.

[0131] The welding mechanism 6 is arranged on one side of the rework platform 1, and is used to weld together the first side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the first side, and to weld together the second side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the second side.

[0132] Taking the case where the replacement cell is 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 application is as follows:

[0133] 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 is controlled to cut the solder strip between the defective battery cell and the adjacent battery cell on the first side, and the solder strip between the defective battery cell and the adjacent battery cell on the second side, and the cut defective battery cell is removed from the first type of battery string to be repaired. The position where the defective battery cell is removed leaves a defective position, and the adjacent battery cells on the first side and the adjacent battery cells on the second side on both sides of the defective position have residual solder strips to be overlapped after cutting. At the same time, the replacement battery cell preparation mechanism 2 processes the initial battery cell into a replacement battery cell.

[0134] Next, the replacement cell loading mechanism 3 is controlled to pick up a replacement cell from the replacement cell preparation mechanism 2 and load the picked-up replacement cell to the defect position.

[0135] Next, the first welding strip clamping mechanism 5 is controlled to clamp the first side welding strip of the replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the first side together. Next, the welding mechanism 6 welds the first side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the first side together.

[0136] Finally, the first welding strip clamping mechanism 5 is controlled to clamp the second side welding strip of the replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the second side together, and then the welding mechanism 6 welds the second side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the second side together.

[0137] It can be seen that, through the cooperation of the replacement cell feeding mechanism 3, the first soldering ribbon cutting mechanism 4, the first soldering ribbon clamping mechanism 5 and the welding mechanism 6, the battery string repair device of the present application realizes the replacement and repair of defective cells in the battery string. In particular, by providing the replacement cell preparation mechanism 2 and the replacement cell feeding mechanism 3, the battery string repair device of the embodiment of the present application realizes the automatic cutting of the soldering ribbon on the initial cell to obtain the required type of replacement cell, and automatically loads the replacement cell to the repair position, thereby improving the efficiency of the battery string repair.

[0138] When a defective cell is at the head of a first-type string of cells to be repaired, after the defective cell is cut and removed, there are no adjacent cells on the first side of the defect location, and the second side of the defect location is a second-side adjacent cell. In this case, after the replacement cell is loaded onto the defect location on the repair platform 1, the first soldering ribbon clamping mechanism 5 is controlled to clamp the second-side soldering ribbon of the replacement cell with the soldering ribbon to be overlapped on the adjacent cell on the second side. Finally, the welding mechanism 6 is controlled to weld the clamped second-side soldering ribbon of the replacement cell to the soldering ribbon to be overlapped on the adjacent cell on the second side.

[0139] When a defective cell is located at the end of a first-type string of cells to be repaired, after the defective cell is cut and removed, there are no adjacent cells on the second side of the defect location, and the first side of the defect location is the first-side adjacent cell. In this case, after the replacement cell is loaded onto the defect location on the repair platform 1, the first soldering ribbon clamping mechanism 5 is controlled to clamp the first-side soldering ribbon of the replacement cell with the soldering ribbon to be overlapped on the first-side adjacent cell. Finally, the welding mechanism 6 is controlled to weld the clamped first-side soldering ribbon of the replacement cell to the soldering ribbon to be overlapped on the first-side adjacent cell.

[0140] As shown in Figures 3 to 5, the replacement cell preparation mechanism 2 optionally includes a feeding mechanism 21, a transfer mechanism 22, a carrier 23, a second solder strip clamping mechanism 24, a second solder strip cutting mechanism 25, and a buffering platform 26, wherein: the feeding mechanism 21 is used to supply the initial cell. The transfer mechanism 22 is used to pick up the initial cell from the feeding mechanism 21 and transfer the initial cell to the carrier 23. The carrier 23 is used to adsorb and fix the initial cell. The second solder strip clamping mechanism 24 is located on one side of the carrier 23. The second solder strip clamping mechanism 24 is used to clamp the end of the solder strip on the side of the initial cell close to the second solder strip clamping mechanism 24. The second solder strip cutting mechanism 25 is used to cut the end of the solder strip on the clamped initial cell to obtain a replacement cell. The transfer mechanism 22 is also used to transfer the replacement cell to the buffering platform 23. The replacement cell loading mechanism 3 is used to pick up the replacement cell from the buffering platform 23.

[0141] It can be seen that through the cooperation of the feeding mechanism 21, the transfer mechanism 22, the carrying platform 23, the second solder ribbon clamping mechanism 24, the second solder ribbon cutting mechanism 25 and the buffering platform 26, the replacement cell preparation mechanism 2 realizes the automatic cutting of the ends of the solder ribbon group on the initial cell to automatically prepare the replacement cell for repair. In addition, by caching the replacement cell on the buffering platform 26, the replacement cell loading mechanism 3 can obtain the replacement cell from the buffering platform 26, thereby improving the loading efficiency of the replacement cell and further improving the efficiency of the battery string repair.

[0142] Depending on the type of replacement cell being prepared, it may be necessary to cut the solder ribbons on both sides of the original cell to obtain the desired replacement cell. To address this issue, the second solder ribbon cutting mechanism 25 is optionally further configured to cut the end of the solder ribbon on the side of the original cell away from the second solder ribbon clamping mechanism 24.

[0143] Optionally, the second solder strip cutting mechanism 25 is used to complete the cutting of the solder strip on the other side of the initial battery cell, which can be achieved in any of the following ways. The first way: after the second solder strip cutting mechanism 25 completes the cutting of the solder strip on one side of the initial battery cell, the transfer mechanism 22 picks up the initial battery cell from the carrier 26, and then rotates the picked up initial battery cell 180º and places it back on the carrier, so that the solder strip on the other side of the initial battery cell that has not been cut is close to the second solder strip clamping mechanism 24. In this way, the second solder strip clamping mechanism 24 can clamp the solder strip on the other side that has not been cut, so that the second solder strip cutting mechanism 25 can cut the solder strip on the other side that has not been cut, thereby obtaining a replacement battery cell. The second way: the second solder strip cutting mechanism 25 moves directly to the end of the solder strip on the initial battery cell that is away from the second solder strip clamping mechanism 24, and cuts the solder strip without clamping the end of the solder strip.

[0144] As shown in FIG8 , the feeding mechanism 21 optionally includes a basket conveying mechanism 211, a lifting mechanism 212, a docking conveying mechanism 213, and a retrieving mechanism 214. The basket conveying mechanism 211 is positioned below the retrieving mechanism 214. The lifting mechanism 212 is positioned between the basket conveying mechanism 211 and the retrieving mechanism 214, and the docking conveying mechanism 213 is connected to a movable component of the lifting mechanism 212. The lifting mechanism 212 is configured to drive the docking conveying mechanism 213 downward to the basket exchange station, allowing the docking conveying mechanism 213 to dock with the basket conveying mechanism 211. The basket conveying mechanism 211 is configured to transport a basket 600 filled with initial battery cells to the docking conveying mechanism 213 or to receive an empty basket 600 from the docking conveying mechanism 213. The lifting mechanism 212 is also configured to drive the docking conveying mechanism 213 upward to the retrieving station, allowing the initial battery cells at the bottom of the basket 600 to be elevated above the retrieving mechanism 214. The picking mechanism 214 is configured to extend into the basket 600. The lifting mechanism 212 is further configured to drive the docking conveyor mechanism 213 downward, so that the initial battery cell located at the bottom of the basket 600 falls onto the picking mechanism 214. The picking mechanism 214 is further configured to remove the initial battery cell from the basket 600. The transfer mechanism 22 picks up the initial battery cell from the picking mechanism 214.

[0145] Optionally, a plurality of storage slots arranged at intervals along the vertical direction are provided in the material basket 600, and each storage slot stores an initial battery cell.

[0146] The optional feeding process of the feeding mechanism 21 is as follows:

[0147] First, the lifting mechanism 212 drives the docking conveyor mechanism 213 down to the basket changing station, so that the docking conveyor mechanism 213 docks with the basket conveyor mechanism 211. The basket conveyor mechanism 211 then conveys the basket 600 filled with initial battery cells to the docking conveyor mechanism 213.

[0148] Next, the lifting mechanism 212 drives the docking conveying mechanism 213 to rise to the cell removal station, so that the initial battery cell at the bottom of the material basket 600 is higher than the material removal mechanism 214, and the material removal mechanism 214 then extends into the material basket 600.

[0149] Subsequently, the lifting mechanism 212 drives the docking conveying mechanism 213 to descend to a predetermined height, so that the initial battery cell at the bottom of the basket 600 falls onto the picking mechanism 214. The picking mechanism 214 then takes the initial battery cell out of the basket 600.

[0150] After the transfer mechanism 22 takes the initial battery cell from the material picking mechanism 214, the material picking mechanism 214 extends into the material basket 600 again, and the lifting mechanism 212 drives the docking conveying mechanism 213 to descend to a predetermined height (for example, the distance between two adjacent storage slots) again, so that the initial battery cell at the bottom of the current material basket 600 falls onto the material picking mechanism 214, and the material picking mechanism 214 then takes the initial battery cell out of the material basket 600.

[0151] Similarly, the material taking mechanism 214 takes out all the initial battery cells in the basket 600 in sequence, and the transfer mechanism 22 takes the initial battery cells from the material taking mechanism 214 .

[0152] After all the initial battery cells in the basket 100 have been removed, the lifting mechanism 212 drives the docking conveyor mechanism 213 to descend again to the basket exchange station, docking the docking conveyor mechanism 213 with the basket conveyor mechanism 211. The docking conveyor mechanism 213 transports the empty basket 600 to the basket conveyor mechanism 211 and receives the next basket 600 filled with battery cells from the basket conveyor mechanism 211.

[0153] Through the cooperation of the basket conveying mechanism 211, the lifting mechanism 212, the docking conveying mechanism 213 and the material taking 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.

[0154] Optionally, as shown in FIG8 , the basket conveying mechanism 211 includes an empty basket conveying portion 2111 and a full basket conveying portion 2112 arranged side by side, and a transverse driving portion 2113 for driving the empty basket conveying portion 2111 and the full basket conveying portion 2112 to move synchronously.

[0155] When the docking conveyor mechanism 213 carries the emptied basket 600 and descends to the basket changing station, the transverse drive unit 2113 drives the empty basket conveying unit 2111 and the full basket conveying unit 2112 to move in parallel, causing the empty basket conveying unit 2111 to dock with the docking conveyor mechanism 213. This allows the docking conveyor mechanism 213 to convey the emptied basket 600 to the empty basket conveying unit 2111, which then conveys the emptied basket 600 to a loading station away from the docking conveyor mechanism 213. Next, the transverse drive unit 2113 drives the empty basket conveying unit 2111 and the full basket conveying unit 2112 to move in parallel, causing the full basket conveying unit 2112 to dock with the docking conveyor mechanism 213. The full basket conveying unit 2112 then delivers another basket 600 filled with battery cells to the docking conveyor mechanism 213.

[0156] In another optional embodiment, the feeding mechanism 21 can independently prepare the initial battery cells. That is, the feeding mechanism 21 can independently weld or bond the first-side welding ribbon and the second-side welding ribbon to the battery cells. After the feeding mechanism 21 prepares each initial battery cell, the transfer mechanism 22 immediately obtains the initial battery cell from the feeding mechanism 21. Of course, the feeding mechanism 21 can also cache several prepared initial battery cells in a material basket or other form of caching mechanism, and the transfer mechanism 22 picks up the cached initial battery cells from the feeding mechanism 21.

[0157] Continuing to refer to Figure 8, optionally, the feeding mechanism 21 also includes a tidying mechanism 215 arranged on the side of the material picking mechanism 214. The tidying mechanism 125 is used to correct the position of the initial battery cells taken out from the material basket 600, thereby ensuring that the transfer mechanism 22 can smoothly pick up the initial battery cells from the material picking mechanism 214.

[0158] The aligning mechanism 125 can adopt various existing types of aligning devices that can correct the position of the initial battery cells. For example, the aligning mechanism 125 includes a first aligning wheel and a second aligning wheel and a aligning drive respectively arranged on both sides of the material picking mechanism 214. When the aligning drive drives the first aligning wheel and the second aligning wheel toward the material picking mechanism 214, the first aligning wheel and the second aligning wheel align the initial battery cells located on the material picking mechanism 214 from both sides.

[0159] Optionally, the material picking mechanism 214 includes a material picking drive unit 2141 and a material picking piece 2142, wherein the material picking piece 2142 is connected to the driving end of the material picking drive unit 2141. When the material picking drive unit 2141 drives the material picking piece 2142 to extend into the material basket 600, the initial battery cell at the bottom of the material basket 600 falls onto the material picking piece 2142 and is attracted by the material picking piece 2142. When the material picking drive unit 2141 drives the material picking piece 2142 to withdraw from the material basket 600, the initial battery cell is removed from the material basket 600.

[0160] Optionally, the material-retrieving drive unit 2141 is a cylinder, and the material-retrieving sheet 2142 is connected to a telescopic rod of the cylinder. The cylinder controls the extension and contraction of the telescopic rod, thereby driving the material-retrieving sheet 2142 to extend into and out of the basket 600. Optionally, the material-retrieving sheet 2142 is provided with adsorption holes, and the material-retrieving sheet 2142 adsorbs the initial battery cell through the adsorption holes.

[0161] As shown in Figure 9, optionally, the transfer mechanism 22 includes a first drive module 221 and a first adsorption component 222 connected to the drive end of the first drive module 221, wherein the first drive module 221 is used to drive the first adsorption component 222 to move horizontally and vertically, so as to drive the first adsorption component 222 to adsorb the initial battery cell or the replacement battery cell, and implement the transfer of the adsorbed initial battery cell or the replacement battery cell.

[0162] In addition, the transfer mechanism 22 is also configured to adjust the angle of the initial battery cell or the replacement battery cell during the transfer process, thereby correcting the position of the initial battery cell or the replacement battery, so that the initial battery cell is transferred to the carrier table in the correct posture, and ultimately ensures that the second solder strip clamping mechanism 24 and the second solder strip cutting mechanism 25 can smoothly cut the solder strip on the initial battery cell, and that the replacement battery cell is transferred to the cache table 26 in the correct posture, and ultimately ensures that the replacement battery cell loading mechanism 3 can smoothly pick up the replacement battery cell from the cache table 26 and load the replacement battery cell onto the rework platform 1.

[0163] Continuing to refer to Figure 9, 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 rotation drive module 2214, wherein 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 rotation drive module 2214 is connected to the drive end of the Z-axis drive module 2213, and the first adsorption member 222 is connected to the drive end of the rotation drive module 2214. Through the coordinated driving of the X-axis drive module 2211, the Y-axis drive module 2212, the Z-axis drive module 2213 and the rotation drive module 2213, the transfer mechanism 22 realizes the translation and lifting drive of the first adsorption component 222, as well as the rotation drive of the first adsorption component 222, and finally enables the transfer mechanism 22 to realize the transfer of the initial battery cell or the replacement battery cell, and complete the position correction of the initial battery cell or the replacement battery cell during the transfer process.

[0164] As shown in Figures 10 to 13, the second solder ribbon clamping mechanism 24 optionally 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 toward or away from the carrier 23, and the clamping assembly 243 is used to clamp the end of the first side solder ribbon or the end of the second side solder ribbon on the initial battery cell.

[0165] The second driving module 241 is also used to drive the clamping assembly 243 to rise and fall, so that a shearing angle is formed between the end of the clamped first side weld strip or the end of the second side weld strip and the initial battery cell, thereby ensuring that the second weld strip shearing mechanism 25 can smoothly implement the cutting of the end of the first side weld strip or the end of the second side weld strip.

[0166] Optionally, the clamping assembly 243 includes a pressure plate 2431, a rotating shaft 2432, a clamping jaw driving member 2433, and a plurality of clamping jaws 2434. 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. The plurality of clamping jaws 2434 are sleeved on the rotating shaft 2432 and are rotatable relative to the rotating shaft 2432. The clamping jaw driving member 2433 is disposed at the bottom of the first mounting bracket 242 and is in transmission connection with the first end of the clamping jaws 2434. The second end of the clamping jaws 2434 serves as a clamping end. When the clamping jaw driving member 2433 drives the plurality of clamping jaws 2434 to rotate synchronously in a first clockwise direction (e.g., counterclockwise), the clamping end of each clamping jaw 2434 clamps a corresponding welding ribbon to the pressure plate 2431. When the clamping jaw driving member 2433 drives the plurality of clamping jaws 2434 to rotate synchronously in the second clockwise direction (eg, clockwise direction), the clamping end of each clamping jaw 2434 is separated from the pressure plate 2431 , thereby releasing the corresponding welding ribbon.

[0167] Of course, the clamping assembly 243 may also adopt other existing structures of a clamping mechanism that can clamp the ends of multiple welding ribbons.

[0168] As shown in Figure 14 , the second ribbon shearing mechanism 25 optionally includes a third drive module (not shown), a second mounting bracket 251, a fixed cutter 252, a movable cutter 253, and a cutter drive 254. 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. Several hook blades 255 are spaced side by side at the lower edge of the fixed cutter 252. The hook-shaped portions of the hook blades 255 are formed with inclined support surfaces for supporting the ribbon, and the upper ends of the inclined support surfaces are formed with fixed blades. The movable cutter 253 is slidably connected to the second mounting bracket 251 and engages with the fixed cutter 252. The lower edge of the movable cutter 253 forms movable blades that mate with the fixed blades.

[0169] The drive end of the cutter driver 254 is connected to the movable cutter 253. The cutter driver 254 is used to drive the movable cutter 253 to slide relative to the fixed cutter 252, switching the movable cutter 253 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, allowing the soldering ribbon to pass through. When the movable cutter 253 slides to the shearing position, the movable blade cooperates with each fixed blade to shear the soldering ribbon passing between them.

[0170] 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:

[0171] In the initial state, the movable cutter 253 is at the avoidance position, and a gap for the welding strip to pass through is formed between the fixed blade of each hook knife 255 and the movable blade of the movable cutter 253 .

[0172] When the first side solder ribbons on the initial cell need to be cut, the third drive module drives the second mounting bracket 251 to move, causing each hook blade 255 to extend between two adjacent solder ribbons on the first side. The third drive module then drives the second mounting bracket 251 downward, causing each hook blade 255 to pass through the two adjacent solder ribbons.

[0173] Next, the third driving module drives the second mounting bracket 251 to translate, so that each hook knife 255 moves to the bottom of the corresponding soldering strip, so that the soldering strip is supported on the supporting inclined surface of the hook knife 255 .

[0174] Finally, the cutter driving member 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 blades of each hook knife 255 to cut the welding strip passing therebetween.

[0175] The second ribbon shearing mechanism 25, constructed as described above, is particularly well-suited for cutting flat ribbons. It inserts a hook blade 255 beneath the ribbon, using its inclined support surface to support the inclined ribbon. The movable cutter 253 then cuts the ribbon along its thickness, ensuring that the flat ribbon remains intact after cutting, without distortion, and that the cut surface is smooth and burr-free. Of course, this second ribbon shearing mechanism 25 is also suitable for cutting round ribbons.

[0176] Of course, the second welding ribbon shearing mechanism 25 may also adopt other existing shearing devices that can perform synchronous shearing on multiple welding ribbons.

[0177] Optionally, the first welding strip shearing mechanism 4 adopts the same structure as the second welding strip shearing mechanism 25 .

[0178] As shown in Figures 3 to 5, optionally, the replacement battery cell preparation mechanism 2 in the embodiment of the present application further includes a first detection mechanism 27. The transfer mechanism 22 is configured to pick up the initial battery cells from the feeding mechanism 21 and transfer the picked-up initial battery 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 battery cells to obtain the position information of the initial battery cells and the quality information of the initial battery cells. The transfer mechanism 22 is also configured to transfer the initial battery cells from the first detection mechanism 27 to the carrier 23 or the cache table 26. The transfer mechanism 22 is also configured to regularize the initial battery cells based on the position information of the initial battery cells during the transfer process.

[0179] When the first inspection mechanism 27 detects that the initial battery cell has no defects and the length of the solder ribbon on it cannot meet the use requirements of the replacement battery cell, it means that the solder ribbon on the initial battery cell needs to be cut. The transfer mechanism 22 then transfers the initial battery cell from the first inspection mechanism 27 to the carrier platform 23, and corrects the position of the initial battery cell during the transfer process to facilitate the subsequent solder ribbon cutting operation.

[0180] When the first inspection mechanism 27 detects that the initial battery cell has no defects and the length of the solder ribbon on it can meet the use requirements of the replacement battery cell, it means that there is no need to cut the solder ribbon on the initial battery cell. The transfer mechanism 22 can directly transfer the initial battery cell from the first inspection mechanism 27 to the cache table 26, and correct the position of the initial battery cell during the transfer process to facilitate subsequent repair operations.

[0181] When the first inspection mechanism 27 detects that the initial battery cell has defects and cannot meet the use requirements, the initial battery cell can be put into the battery cell NG material box through the transfer mechanism 22 to prevent the defective battery cell from flowing into the subsequent process.

[0182] It can be seen that 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 regularized according to the detection results for subsequent use.

[0183] Optionally, the first inspection mechanism 27 includes at least one of a visual inspection mechanism and an EL (electroluminescent) inspection mechanism. The visual inspection mechanism can utilize a conventional CCD camera in conjunction with a light source to photograph and analyze the initial cells to detect their position and appearance. The EL inspection mechanism can also detect solder joint defects and internal defects in the initial cells.

[0184] Optionally, the replacement cell preparation mechanism 2 further includes a second inspection mechanism 28. The buffering platform 26 is disposed on a fourth drive module, which is configured to drive the buffering platform 26 to translate 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 from the buffering platform 26 after being inspected by the second inspection mechanism 28.

[0185] When the second detection mechanism 28 detects that the position of the replacement battery cell on the buffer table 26 cannot meet the subsequent repair requirements, the replacement battery cell can be picked up again by the transfer mechanism 22, and the position can be adjusted and then placed back on the buffer table 26 for subsequent repair.

[0186] When the second inspection mechanism 28 detects that the replacement battery cell on the cache table 26 has defects (such as unqualified solder strip length, unqualified battery cell quality, etc.) and cannot be used, the replacement battery cell can be put into the battery cell NG material box through the transfer mechanism 22 or the replacement battery cell loading mechanism 3 to avoid defective battery cells from flowing into the subsequent process.

[0187] Optionally, the second detection mechanism 28 may be a conventional visual detection mechanism, for example, including a CCD camera and a light source.

[0188] As shown in FIG3 , the buffer station 26 optionally includes a first buffer station 261, a second buffer station 262, and a third buffer station 263 arranged side by side, wherein: the first buffer station 261 is used to buffer the head replacement battery cells transferred by the transfer mechanism 22, and the head replacement battery cells are used to replace the defective battery cells at the head of the battery string to be repaired. The second buffer station 262 is used to buffer the tail replacement battery cells transferred by the transfer mechanism 22, and the tail replacement battery cells are used to replace the defective battery cells at the tail of the battery string to be repaired. The third buffer station 263 is used to buffer the middle replacement battery cells transferred by the transfer mechanism 22, and the middle replacement battery cells are used to replace the defective battery cells located between the head battery cells and the tail battery cells in the battery string to be repaired.

[0189] By configuring the cache station 26 to include a first cache station 261, a second cache station 262, and a third cache station 263, partitioned caching of the head replacement battery cells, the tail replacement battery cells, and the middle replacement battery cells is achieved, ensuring that during the rework process, the replacement battery cell loading mechanism 3 can accurately obtain the appropriate type of replacement battery cells from the cache station 26 and load the replacement battery cells to the subsequent rework station.

[0190] Optionally, sensors are provided on the first cache station 261, the second cache station 262, and the third cache station 263. When the replacement battery cells on the first cache station 261, the second cache station 262, and the third cache station 263 are emptied, the corresponding sensors are triggered to generate induction signals. The second solder strip clamping mechanism 24 and the second solder strip cutting mechanism 25 cut the solder strips on the initial battery cells based on the received induction signals, thereby implementing the supplementary preparation of the corresponding type of replacement battery cells, ensuring that the corresponding type of replacement battery cells are present on the first cache station 261, the second cache station 262, and the third cache station 263, so that the replacement battery cell loading mechanism 3 can obtain the required type of replacement battery cells in a timely manner.

[0191] As shown in FIG15 , the replacement cell loading mechanism 3 optionally includes a fifth drive module 31, a third mounting bracket 32, and a second suction member 33, wherein the third mounting bracket 32 ​​is connected to the driving end of the fifth drive module 31, and the second suction member 33 is disposed on the third mounting bracket 32. The fifth drive module 31 is used to drive the second suction member 33 to translate and elevate, thereby driving the second suction member 33 to absorb the replacement cell from the replacement cell preparation mechanism 2 and load the replacement cell onto the rework platform 1.

[0192] As shown in Figure 16, optionally, the rework platform 1 includes a mounting seat 11, an intermediate soldering station 12, a first side soldering station 13 and a second side soldering station 14, wherein: the intermediate soldering station 12 can be mounted on the mounting seat 11 in a vertically flipped manner, and the intermediate soldering station 12 is used to carry and absorb defective battery cells and replacement battery cells in the battery string to be reworked.

[0193] The first side soldering platform 13 is movably mounted on the mounting base 11. The first side soldering platform 13 is used to support the cell on the first side of the defective cell and can at least absorb the adjacent cell on the first side. The first side soldering platform 14 is configured to move toward or away from the middle soldering platform 12 to achieve docking and separation with the middle soldering platform 12, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle soldering platform 12.

[0194] The second side soldering station 14 is movably mounted on the mounting base 11. The second side soldering station 14 is used to support the battery cell on the second side of the defective battery cell and can at least absorb the adjacent battery cell on the second side. The second side soldering station 14 is configured to be able to translate toward or away from the middle soldering station 12 to achieve docking and separation with the middle soldering station 12, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle soldering station 12.

[0195] In the initial state, the middle welding platform 12, the first side welding platform 13 and the second side welding platform 14 are connected in the horizontal direction and aligned in the vertical direction, and the surfaces of the middle welding platform 12, the first side welding platform 13 and the second side welding platform 14 are connected to form a continuous horizontal welding platform.

[0196] For the first type of battery string to be repaired, the first type of battery string to be repaired is first placed on the horizontal welding table, and the defective battery cell is adsorbed on the middle welding table 12, and the adjacent battery cells on both sides of the defective battery cell are adsorbed on the first side welding table 13 and the second side welding table 14 respectively.

[0197] Next, the first side soldering station 13 and the second side soldering station 14 are controlled to rise or fall so that the first side soldering station 13, the second side soldering station 14 and the middle soldering station 12 are staggered in the vertical direction. At this time, the first solder strip cutting mechanism 4 can easily cut off the solder strip between the defective battery cell and the adjacent battery cell.

[0198] After the solder strip is cut, the first side soldering station 13 and the second side soldering station 14 are controlled to move away, and then the middle soldering station 12 is controlled to flip over, so that the defective battery cell that has been disassembled is removed from the middle soldering station 12.

[0199] It can be seen that by configuring the rework platform 1 , the rework platform 1 can cooperate with the first solder ribbon shearing mechanism 4 to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0200] Optionally, the intermediate welding platform 12 is disposed on a flipping drive mechanism 15 , and the flipping drive mechanism 15 drives the intermediate welding platform 12 to flip vertically.

[0201] When defective cells are removed from the first type of cell string to be repaired, impurities such as solder debris and cell debris will fall onto the intermediate soldering station. If not cleaned promptly, this will affect the quality of subsequent repairs. To address this issue, the rework platform 1 optionally includes a cleaning mechanism disposed on the side of the intermediate soldering station 12. The cleaning mechanism is configured to perform operations such as blowing, wiping, or vacuuming on the intermediate soldering station 12 after the defective cell is removed from the intermediate soldering station 12 to remove impurities on the intermediate soldering station.

[0202] As shown in Figures 17 to 22, optionally, the first ribbon clamping mechanism 5 includes a sixth driving module (not shown in the figures), a fourth mounting bracket 51, an opening and closing driving mechanism 52, a first guide mounting seat 53, a second guide mounting seat 54, an elastic pressing mechanism 55, and several groups of first chucks 56 and second chucks 57 arranged in pairs, wherein:

[0203] The fourth mounting bracket 51 is connected to the driving end of the sixth driving module, which is used to drive the movement of the fourth mounting bracket 51. The opening and closing driving mechanism 52 is installed 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 driving end of the opening and closing driving mechanism 52.

[0204] The first clamps 56 are arranged side by side, and each first clamp 56 is connected to the first guide mounting base 53 via a first floating assembly 58 so as to float up and down. The second clamps 57 are arranged side by side, and each second clamp 57 is connected to the second guide mounting base 54 via a second floating assembly 59 so as to float up and down, and is able to rotate relative to the second guide mounting base 54 in a horizontal plane.

[0205] The elastic clamping mechanism 55 is mounted on the second guide mounting base 54 and includes a plurality of elastic clamping assemblies 551 corresponding one to each second clamp 57. A reference block is provided on the second guide mounting base 54 corresponding to each second clamp 57. The elastic clamping assemblies 551 are used to elastically push the corresponding second clamp 57 to rotate in a horizontal plane and 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 assemblies 551 are also capable of elastically deforming when subjected to a reverse force from the corresponding second clamp 57.

[0206] The opening and closing drive mechanism 52 is used to drive the first guide mounting seat 53 and the second guide mounting seat 54 toward the center after the clamping end of the second clamping head 57 is aligned with the clamping end of the corresponding first clamping head 56, so that the clamping end of the second clamping head 57 cooperates with the clamping end of the corresponding first clamping head 56 to clamp the welding strip. The opening and closing drive mechanism 52 is also used to drive the first guide mounting seat 53 and the second guide mounting seat 54 to separate to both sides, so that the clamping end of the second clamping head 57 and the clamping end of the corresponding first clamping head 56 release the welding strip.

[0207] The optional working process of the first welding ribbon clamping mechanism 5 is as follows:

[0208] In the initial state, each set of first clamps 56 and the corresponding second clamps 57 are in an open state (as shown in FIG. 22 ).

[0209] Next, the sixth driving module adjusts the position of the fourth mounting bracket 51 so that the clamping gaps between each group of first clamps 56 and second clamps 57 are respectively aligned with the corresponding pair of first welding strips 100 and second welding strips 200 to be overlapped. The first welding strip 100 is, for example, one of the welding strips on the first side of the replacement battery cell, and the second welding strip 200 is, for example, one of the welding strips to be overlapped on the adjacent battery cell on the first side.

[0210] Then, the sixth driving module drives the fourth mounting bracket 51 to descend. Since the first clamp 56 is connected to the first guide mounting seat 53 by the first floating component 58 and can float up and down, and the second clamp 57 is connected to the second guide mounting seat 54 by the second floating component 59 and can float up and down, as the fourth mounting bracket 51 descends, the first clamp 56 and the second clamp 57 can realize adaptive adjustment of the relative position in the height direction after contacting the battery cell, and finally ensure that the first clamp 56 and the second clamp 57 both abut against the battery cell to realize alignment in the height direction.

[0211] At the same time, under the action of each elastic pressing assembly 551 , each second clamp 57 can automatically rest 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 .

[0212] 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 middle, driving the clamping ends of each second clamp 57 to be synchronously clamped 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.

[0213] It can be seen that since each first clamp 56 and each second clamp 57 can be connected to the corresponding guide mounting seat in a floating manner up and down, with this arrangement, the first clamp 56 and the second clamp 57 can realize adaptive adjustment of the relative position in the height direction after they descend and contact the battery cell, thereby ensuring that the first clamp 56 and the second clamp 57 can be aligned in the height direction.

[0214] At the same time, by setting up an elastic clamping mechanism 55, the first welding strip clamping mechanism 5 can also adaptively adjust the horizontal angle of the clamping end of the second clamp 57, thereby ensuring that the clamping end of the second clamp 57 is aligned with the clamping end of the first clamp 56, ensuring that the two welding strips can smoothly climb tin to achieve overlap during the welding process, and ultimately ensuring the quality of the lap welding.

[0215] When there are no foreign objects such as tin beads on the first welding ribbon 100 and the second welding ribbon 200 to be overlapped, after the first welding ribbon 100 and the second welding ribbon 200 are clamped by the aligned clamping ends of the first clamp 56 and the second clamp 57, the gap between the clamped first welding ribbon 100 and the second welding ribbon 200 can be reduced or eliminated, so that the first welding ribbon 100 and the second welding ribbon 200 can be smoothly tinned during the welding process, thereby improving the overlap quality.

[0216] In the case where there are foreign objects such as tin beads on the first welding ribbon 100 and the second welding ribbon 200 to be overlapped, after the first welding ribbon 100 and the second welding ribbon 200 are clamped by the clamping ends of the aligned first clamp 56 and the clamping ends of the second clamp 57, a large gap will still exist between the clamped first welding ribbon 100 and the second welding ribbon 200 due to the obstruction of the foreign object. However, due to the presence of the elastic pressing component 551, the foreign object can force the second clamp 57 to rotate, causing the elastic pressing component 551 to elastically deform. After the foreign object melts again during the welding process, the second clamp 57 can be rotated back to the reference position under the action of the elastic pressing component 551, thereby reducing or eliminating the gap between the first welding ribbon 100 and the second welding ribbon 200, so that the first welding ribbon 100 and the second welding ribbon 200 can smoothly climb tin during the welding process, thereby improving the overlap quality.

[0217] As shown in Figures 17 and 21, the first floating assembly 58 optionally includes a first guide post, a first spring 581, a first chuck mounting seat 582, and a floating guide assembly 583. The first guide post has its upper and lower ends fixedly connected to the first guide mounting seat 53, the first chuck mounting seat 582 is slidably mounted on the first guide post, and the first spring 581 is mounted on the first guide post. The upper end of the first spring 581 abuts against the first guide mounting seat 53, and the lower end of the first spring 581 abuts against the first chuck mounting seat 582. The first chuck 56 is mounted on the first chuck mounting seat 582, with the clamping end of the first chuck 56 extending downwardly from the first chuck mounting seat 582. The floating guide assembly 583 is disposed between the first chuck mounting seat 582 and the first guide mounting seat 53 to restrict the first chuck mounting seat 582 to vertical movement.

[0218] Because a first spring 581 is interposed 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 downward, the first chuck 56 can achieve adaptive height adjustment relative to the battery cell after descending and contacting the battery cell, thanks to the expansion and contraction adjustment of the first spring 581. During this process, the floating guide assembly 583 provides limited guidance for the first chuck mounting base 582, limiting its vertical movement and preventing horizontal rotation. This ultimately ensures that when the second chuck 57 is rotated into 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.

[0219] Optionally, the second floating assembly 59 includes a second guide post, a second spring, and a second chuck mounting seat 591. The upper and lower ends of the second guide post are respectively fixedly connected to the second guide mounting seat 54. The second chuck mounting seat 591 is slidably mounted on the second guide post. The second spring is mounted on the second guide post. The upper end of the second spring abuts the second guide mounting seat 54, and the lower end of the second spring abuts the second chuck mounting seat 591. The second chuck 57 is mounted on the second chuck mounting seat 591, with the clamping end of the second chuck 57 extending downwardly from the second chuck mounting seat 591.

[0220] Since a second spring is provided between the second clamp mounting seat 591 and the second guide mounting seat 54, when the sixth driving module drives the fourth mounting bracket 51 to descend, under the telescopic adjustment of the second spring, the second clamp 57 can realize adaptive adjustment of the relative position in the height direction after descending and contacting the battery cell, and the second clamp mounting seat 591 can also rotate around the second guide column after being subjected to force, driving the second clamp 57 to realize rotation in the horizontal plane.

[0221] As shown in Figures 17, 10, and 20, the elastic compression assembly 551 optionally includes a fixing frame 5511 and a compression spring 5512. The fixing frame 5511 is disposed on the second guide mounting seat 54. The first end of the compression spring 5512 elastically abuts against the fixing frame 5511, while 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 within a horizontal plane, thereby driving the second chuck 57 to abut against the corresponding reference block. Thus, the elastic compression assembly 551 does not require an additional elastic drive assembly. The compression spring 5512, through its own elastic force, pushes the second chuck mounting seat 591 to rotate, thereby maintaining the second chuck 57 against the corresponding reference block.

[0222] As shown in FIG22 , the bottom surface of the clamping end of the first clamp 56 optionally includes a first bottom surface 561, a second bottom surface 562, and a first side elevation 563. The first bottom surface 561 is lower than the second bottom surface 562, and the first side elevation 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 clamp 57 includes a third bottom surface 571, a fourth bottom surface 572, and a second side elevation 573. The third bottom surface 571 is lower than the fourth bottom surface 572, and the second side elevation 573 is located between the third bottom surface 571 and the fourth bottom surface 572. A clamping space is formed between the second side elevation 573 and the first side elevation 563. The second side elevation 573 and the first side elevation 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, thereby clamping or releasing the first welding ribbon 100 and the second welding ribbon 200 located within the clamping space. The first bottom surface 561 and the third bottom surface 571 are used to abut against the battery cell.

[0223] By performing the above-mentioned setting on the clamping end of the first clamp 56 and the clamping end of the second clamp 57, 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 upward after contacting the battery cell, and finally reach the same height, and the welding strip to be clamped enters between the first side elevation 563 of the first clamp 56 and the second side elevation 573 of the second clamp 57. Subsequently, the first clamp 56 and the second clamp 57 move closer to the middle, thereby driving the first side elevation 563 and the second side elevation 573 to smoothly clamp the first welding strip 100 and the second welding strip 200 to be overlapped.

[0224] Optionally, a vertical first through-hole 564 is further defined on the clamping end of the first clamp 56, and a vertical second through-hole 574 is further defined on the clamping end of the second clamp 57. When the clamping ends of the first clamp 56 and the second clamp 57 clamp the first welding ribbon 100 and the second welding ribbon 200, the first welding ribbon 100 and the second welding ribbon 200 are exposed through the first through-hole 564 and the second through-hole 574. Optionally, the first welding ribbon 100 is exposed through the first through-hole 564, and the second welding ribbon 200 is exposed through the second through-hole 574.

[0225] First through hole 564 and second through hole 574 can be used as ventilation holes. During welding, blowing air toward the ventilation holes can cool the solder strips after welding. First through hole 564 and second through hole 574 can also serve as light transmission holes. In this case, laser welding can be used. The laser beam passes through the light transmission holes and illuminates the solder strips, thereby extending the heated length of the two solder strips, accelerating the melting of the solder on the solder strips, and ensuring weld quality.

[0226] As shown in FIG16 , the battery string repair apparatus in the embodiment of the present application optionally further includes a first coating mechanism 7. The first coating mechanism 7 is configured to be movable to the repair platform 1 and is used to apply flux to the overlapping portion between the first side welding ribbon of the replacement battery cell and the welding ribbon to be overlapped on the first side adjacent battery cell, and is used to apply flux to the overlapping portion between the second side welding ribbon of the replacement battery cell and the welding ribbon to be overlapped on the second side adjacent battery cell.

[0227] Before welding the first side welding strip of the replacement battery cell and the welding strip to be overlapped on the first side adjacent battery cell, the first coating mechanism 7 first applies flux to the overlapping parts of the first side welding strip of the replacement battery cell and the welding strip to be overlapped on the first side adjacent battery cell, so as to ensure the welding quality of the first side welding strip of the replacement battery cell and the welding strip to be overlapped on the first side adjacent battery cell.

[0228] Similarly, before welding the second side welding strip of the replacement battery cell and the welding strip to be overlapped on the second side adjacent battery cell, the first coating mechanism 7 first applies flux to the overlapping part of the second side welding strip of the replacement battery cell and the welding strip to be overlapped on the second side adjacent battery cell, so as to ensure the welding quality of the second side welding strip of the replacement battery cell and the welding strip to be overlapped on the second side adjacent battery cell.

[0229] Optionally, the first coating mechanism 7 can be separately configured with a driving module to drive it to move to the rework platform 1. Of course, in order to save equipment costs and space, the first coating mechanism 7 and the first solder strip clamping mechanism 5 can also be installed on the same driving module (i.e., the sixth driving module), or the first coating mechanism 7 and the replacement battery cell loading mechanism 3 can be installed on the same driving module (i.e., the fifth driving module), and so on.

[0230] As shown in Figures 23 to 25, 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 driving end of the sixth driving module, and the mounting plate 72 is connected to the driving 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 so as to be telescopically connected up and down via an elastic buffer 74, and each first coating pen 73 is used to apply flux to a portion to be overlapped. The coating drive assembly 71 is used to drive the plurality of first coating pens 73 to translate and lift, so that each first coating pen 73 contacts or detaches from the corresponding solder strip.

[0231] The first coating mechanism 7 uses a first coating pen 73 to apply flux to the solder strips. This allows for spot coating of the solder strips, resulting in higher coating accuracy and less flux usage compared to spray coating. Each first coating pen 73 is retractably connected to the bottom of the mounting plate 72 via an elastic buffer 74. This ensures that when the mounting plate 72 is lowered, each first coating pen 73 can contact the corresponding solder strip, ensuring effective flux coating of all solder strips.

[0232] As shown in FIG16 , the battery string rework device further includes a first refill mechanism 180 disposed on one side of the rework platform. The first refill mechanism 180 is used to replenish flux onto each first coating pen 73. The first refill mechanism 180 can replenish flux onto the pen tip of the first coating pen 73 by spraying, dipping, or the like.

[0233] As shown in FIG25 , the elastic buffer member 74 optionally includes a mounting seat 742 and a spring 744, wherein the upper end of the mounting seat 742 is slidably connected to the mounting plate 72, the coating pen 73 is fixedly mounted on the lower end of the mounting seat 742, and the spring 744 is sleeved on the mounting seat 742. The upper end of the spring 744 abuts against the bottom of the mounting seat 742, and the lower end of the spring 744 abuts against the support step on the mounting seat 742. When the first coating pen 73 contacts the corresponding solder strip, the spring 744 is compressed and contracted, thereby implementing adaptive adjustment of the height of the first coating pen 73, thereby ensuring that each first coating pen 73 can contact the corresponding solder strip.

[0234] Optionally, a vertically extending floating groove 743 is further provided at the upper end of the mounting seat 742, and the elastic buffer 74 further includes a limit screw 741 mounted horizontally on the mounting plate 72, with the top end of the limit screw 741 located within the floating groove 743. This ensures that the upper end of the mounting seat 742 is retained within the mounting plate 72, while also ensuring that the floating travel of the mounting seat 742 is equal to the length of the floating groove 743.

[0235] Optionally, the welding mechanism 6 is a laser welding mechanism, which mainly includes components such as a laser for emitting a laser beam, a galvanometer, and a field lens. The laser welding mechanism is arranged above the rework platform 1. The laser welding mechanism performs rework welding in a non-contact manner, which can achieve targeted welding of the overlapping parts, and the welding temperature is controllable, with little thermal impact on the battery cell and high welding quality.

[0236] As known to those skilled in the art, common battery strings to be repaired include, in addition to the first type of battery strings to be repaired that require replacement cells as mentioned above, a second type of battery strings to be repaired that require repair of weld defects. The welding mechanism 6 in the embodiment of the present application is further used to weld weld defects on at least one of the upper and lower surfaces of the second type of battery strings to be repaired that are carried on the repair platform 1, so as to re-weld the welded ribbons to the battery cells.

[0237] Since the laser energy emitted by the laser welding mechanism can pass through the battery cell by means of heat conduction and the like, the laser welding mechanism can be used to perform the repair welding of the second type of battery strings to be repaired. There is no need to flip the second type of battery strings to be repaired, and the welding of the cold weld positions on both surfaces of the second type of battery strings to be repaired can be completed.

[0238] Optionally, the laser welding mechanism also includes a temperature sensor coaxially arranged with the laser. The temperature sensor is used to detect the welding temperature in real time during the laser welding process. The output power of the laser is adjusted in real time based on the detected welding temperature, thereby ensuring that the welding temperature is always maintained within a predetermined range, thereby ensuring the welding quality.

[0239] As shown in FIG26 , the battery string repair apparatus in the embodiment of the present application further includes a second coating mechanism 8, which is configured to be movable to the repair platform 1 and is used to apply flux to the cold solder joint locations on the upper surface of the second type of battery string to be repaired, which is carried on the repair platform 1. By providing the second coating mechanism 8, the flux coating of the cold solder joint locations on the upper surface of the second type of battery string to be repaired is achieved, thereby improving the quality of the cold solder joint repair on the upper surface of the second type of battery string to be repaired.

[0240] Optionally, the second coating mechanism 8 includes a seventh drive module (not shown in the figure), a fifth mounting bracket 81 and a plurality of coating assemblies 82, wherein the fifth mounting bracket 81 is connected to the driving end of the seventh drive module. The plurality of coating assemblies 82 are arranged side by side on the fifth mounting bracket 81, and each coating assembly 82 is capable of applying flux to a soldering ribbon. The coating assemblies 82 each include a driving portion 821 and a second coating pen 822, wherein the driving portion 821 is connected to the fifth mounting bracket 81, and the second coating pen 822 is connected to the driving end of the driving portion 821. The driving portion 821 is at least used to drive the second coating pen 822 to rise and fall, so that the second coating pen 822 contacts or separates from the corresponding soldering ribbon.

[0241] The second coating mechanism 8 uses a second coating pen 822 to apply flux to the solder strip, which can achieve spot coating of the solder strip. Compared with the spray coating method, the coating accuracy is higher and the amount of flux used is more economical. Each second coating pen 822 is independently driven by its own driving unit 821 to lift and lower. When each second coating pen 822 moves above the target solder strip, the second coating pen 822 corresponding to the solder strip with a cold solder joint can be individually controlled to descend and implement targeted coating, while the remaining second coating pens 822 are all away from the corresponding solder strips. In this way, precise spot coating of the cold solder joint is achieved, avoiding contamination of the area where other solder strips are located, and further saving flux.

[0242] Optionally, the fifth mounting bracket 81 includes a mounting backplate 811, an adapter plate 812, and an adapter plate drive assembly 813, wherein the mounting backplate 811 is connected to the driving end of the seventh drive module, and the adapter plate 812 is slidably connected to the mounting backplate 811 and is in driving connection with the adapter plate drive assembly 813 provided on the mounting backplate 811. Several coating assemblies 82 are mounted side by side on the adapter plate 812, and the adapter plate drive assembly 813 is used to drive the adapter plate 812 to slide and translate on the mounting backplate 811, thereby ensuring that each coating assembly 82 is aligned with the corresponding welding strip.

[0243] As shown in FIG15 , in order to reduce equipment costs, in another optional embodiment, the second coating mechanism 8 is not provided with a separate drive module (i.e., the seventh drive module), but is integrated with the drive module (i.e., the fifth drive module 31) of the replacement cell feeding mechanism 3. The fifth drive module 31 drives the second coating mechanism 8 to translate and elevate, so that the second coating mechanism 8 applies flux to the upper surface of the second type of cell strings to be repaired where the solder joints are poorly soldered. Of course, in addition to integrating the second coating mechanism 8 with the drive module (i.e., the fifth drive module 31) of the replacement cell feeding mechanism 3, the second coating mechanism 8 can also be integrated with the drive module (i.e., the sixth drive module) of the first solder ribbon clamping mechanism 5, and so on.

[0244] As shown in Figures 4 and 5, the battery string rework device further includes a second refill mechanism 150 disposed on one side of the rework platform 1. The second refill mechanism 150 is used to replenish flux onto each second coating pen 822. The second refill mechanism 150 can replenish flux onto the pen tip of the second coating pen 822 by spraying, dipping, or the like.

[0245] As shown in Figures 3, 4, and 7, the battery string repair device in the embodiment of the present application optionally further includes a loading gripper 9 and a feed detection mechanism 10. The feed detection 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 feed detection mechanism 10 and load the battery string to be repaired onto the repair platform 1.

[0246] By setting up the feed detection mechanism 10, the defect type and defect location of the battery string to be repaired can be detected, so that the battery string repair device of the embodiment of the present application can perform targeted repair of the battery string to be repaired according to the defect type and defect location of the battery string to be repaired.

[0247] By providing the loading gripper 9 , it is possible to automatically load the battery strings to be repaired after the inspection onto the repair platform 1 .

[0248] Optionally, the feeding detection mechanism 10 includes a loading mechanism (not shown in the figure), a first gripper 101, a straightening table 102, a first string inspection mechanism (not shown in the figure), a second gripper 103, a loading 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 loading mechanism is used to supply battery strings. The first gripper 101 is used to transport the battery strings supplied by the loading mechanism to the straightening table 102, and the straightening table 102 is used to straighten the battery strings. The first string inspection mechanism is arranged above the straightening table 102 and is used to detect appearance defects on the upper surface of the battery string. The second gripper 103 is used to transport the battery string from the straightening table 102 to above the loading EL inspection mechanism 104 and the second string inspection mechanism, wherein the loading EL inspection mechanism 104 is used to perform EL inspection on the battery string, and the second string inspection mechanism is used to detect appearance defects on the lower surface of the battery string.

[0249] The second gripper 103 is also used to place the battery strings to be repaired after testing on the transfer table, and place the battery strings that cannot be repaired after testing into the discharge box 106. The loading gripper 9 picks up the battery strings to be repaired from the transfer table.

[0250] By configuring the feed detection mechanism 10, the feed detection mechanism 10 can detect cold solder joints, internal defects, and appearance defects of the battery strings, thereby determining whether the battery strings are to be repaired or battery strings that cannot be repaired, and determining the defect type and defect location of the battery strings to be repaired. In addition, the feed detection mechanism 10 can also place the determined battery strings to be repaired on the transfer table and place the battery strings that cannot be repaired into the discharge box.

[0251] Optionally, the first string inspection mechanism and the second string inspection mechanism each include a CCD camera, which respectively photographs the upper and lower surfaces of the battery string to obtain visible light images of the upper and lower surfaces of the battery string, and then performs image analysis on the visible light images of the upper and lower surfaces of the battery string to perform appearance defect detection on the upper and lower surfaces of the battery string.

[0252] Optionally, the loading EL detection mechanism 104 includes two oppositely disposed conductive probes and an EL camera. The two oppositely disposed conductive probes clamp the head and tail solder ribbons of the battery string from both ends to energize the battery string, while the EL camera is used to capture an infrared image of the battery string in the energized state to perform EL detection on the battery string.

[0253] Optionally, the battery string repair device in the embodiment of the present application also includes a third coating mechanism 110, which is located on the moving path of the loading gripper 9. The third coating mechanism 110 is used to coat flux on the lower surface of the second type of battery string to be repaired on the loading gripper 9.

[0254] By setting up the third coating mechanism 110, the flux coating of the cold solder joint position on the lower surface of the second type of battery string to be repaired is achieved, thereby improving the quality of the cold solder joint repair on the lower surface of the second type of battery string to be repaired.

[0255] 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, a coating pen can be used to apply flux to the cold solder joints on the lower surface of the second type of battery string to be repaired. The coating pen of the third coating mechanism 110 can also be configured to be vertically flippable, so that the pen tip is turned upward when applying solder and turned downward when not applying solder, ensuring that the flux in the pen can penetrate the pen tip.

[0256] Optionally, the battery string repair device further includes a third refilling mechanism disposed on one side of the third coating mechanism 110, the third refilling mechanism being configured to replenish flux onto the coating pen of the third coating mechanism 110. The third refilling mechanism can replenish flux onto the tip of the coating pen of the third coating mechanism 110 by spraying, immersing, or the like.

[0257] As shown in Figure 16, optionally, the battery string repair device in the embodiment of the present application further includes a clamping mechanism 120, which is arranged on one side of the repair platform 1. The clamping mechanism 120 is used to press the solder strips with cold solder joints in the second type of battery strings to be repaired onto the corresponding battery cells, thereby ensuring that the solder strips with cold solder joints can be re-welded to the corresponding battery cells, thereby further improving the quality of cold solder joint repair.

[0258] To save equipment costs, in the implementation shown in Figure 16, the clamping mechanism 120 is integrated with the drive module of the first solder ribbon shearing mechanism 4, driving the clamping mechanism 120 to move and lift, thereby pressing the solder ribbons with cold solder joints in the second type of battery strings to be repaired onto the corresponding battery cells. Of course, the clamping mechanism 120 can also be independently installed on its own drive module, which can drive its translation and lifting.

[0259] As shown in FIG3 , the battery string repair device in the embodiment of the present application optionally further includes a material unloading gripper 130, a material discharging EL detection mechanism 140, a material receiving mechanism (not shown in the figure), an NG material box 160, and a buffer material box 170, wherein the material unloading gripper 130 is used to transfer the repaired battery string from the repair platform 1 to the top of the material discharging EL detection mechanism 140. The material discharging EL detection mechanism 140 is used to detect the repaired battery string to determine the type of the repaired battery string, and the types of the repaired battery string include a battery string that passes the repair, a battery string that fails the repair and cannot be repaired a second time, and a battery string that fails the repair and can be repaired a second time.

[0260] The unloading gripper 130 is also used to deliver the battery strings that have passed the repair to the receiving mechanism, deliver the battery strings that have failed the repair and cannot be repaired a second time to the NG material box 160, deliver the battery strings that have failed the repair and can be repaired a second time to the cache material box 170, and deliver the battery strings in the cache material box 170 that have failed the repair and can be repaired a second time to the repair platform 1.

[0261] As can be seen, by providing the unloading gripper 130, the discharging EL detection mechanism 140, the receiving mechanism, the NG material box 160, and the buffer material box 170, it is possible to detect the repaired battery strings and determine the type of the repaired battery strings. In addition, it is also possible to classify and receive three different types of repaired battery strings. In particular, the battery strings that fail the repair and can undergo a second repair are returned to the repair platform for secondary repair.

[0262] Optionally, the discharge EL detection mechanism 140 includes two oppositely disposed conductive probes and an EL camera. The two oppositely disposed conductive probes clamp the head and tail solder strips of the repaired battery string from both ends to energize the repaired battery string. The EL camera is used to capture an infrared image of the repaired battery string in the energized state to perform EL inspection on the repaired battery string to detect whether the repaired battery string has cold solder joints or internal defects, and ultimately determine the type of the repaired battery string.

[0263] The present application has been described above in sufficient detail with certain specificity. Those skilled in the art will understand that the descriptions in the examples are merely illustrative, and that all modifications made without departing from the true spirit and scope of the present application are intended to be within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the description in the examples.

Claims

1. A battery string repair device, characterized in that: The battery string repair device includes a repair platform, a replacement battery cell preparation mechanism, a replacement battery cell loading mechanism, a first solder ribbon shearing mechanism, a first solder ribbon 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 a first type of battery strings to be repaired whose cells need to be replaced; The first solder ribbon cutting mechanism is provided on one side of the repair platform, and is used to cut the solder ribbon between the defective cell to be replaced and the adjacent cell in the first type of cell string to be repaired, wherein the adjacent cell includes at least one of the first side adjacent cell and the second side adjacent cell; The replacement cell preparation mechanism is used to process an initial cell into a replacement cell, wherein the upper surface of the initial cell is connected to a first side welding ribbon extending outwardly from a first side of the initial cell, and the lower surface of the initial cell is connected to a second side welding ribbon extending outwardly from a second side of the initial cell. The replacement cell preparation mechanism is configured to cut at least one of the first side welding ribbon and the second side welding ribbon to obtain the replacement cell, wherein the replacement cell includes at least one of a head replacement cell, a middle replacement cell, and a tail replacement 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 defective position in the first type of battery string to be repaired on the repair platform, where the defective position is the position left vacant after the defective cell is removed from the first type of battery string to be repaired; The first solder strip clamping mechanism is provided on one side of the rework platform, and is used to clamp the first side solder strip of the replacement cell located at the defective position and the solder strip to be overlapped on the adjacent cell on the first side together, and is used to clamp the second side solder strip of the replacement cell located at the defective position and the solder strip to be overlapped on the adjacent cell on the second side together; The welding mechanism is arranged on one side of the rework platform, and is used to weld together the first side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the first side, and to weld together the second side welding strip of the clamped replacement battery cell and the welding strip to be overlapped on the adjacent battery cell on the second side.

2. The battery string repair device according to claim 1, characterized in that: The replacement battery cell preparation mechanism includes a feeding mechanism, a transfer mechanism, a carrying platform, a second solder ribbon clamping mechanism, a second solder ribbon shearing mechanism and a buffering platform, 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 carrying platform; The supporting platform is used for adsorbing and fixing the initial battery sheet; The second solder ribbon clamping mechanism is located on one side of the carrying platform, and is used to clamp the end of the solder ribbon on the side of the initial battery cell that is close to the second solder ribbon clamping mechanism; the second solder ribbon shearing mechanism is used to shear the end of the solder ribbon on the clamped initial battery cell to obtain a replacement battery cell; The transport mechanism is also used to transport the replacement battery slice to the cache table; The replacement battery cell loading mechanism is used to pick up the replacement battery cell from the buffer table.

3. The battery string repair device according to claim 2, wherein: The second solder ribbon shearing mechanism is further used to shear the end portion of the solder ribbon on the side of the initial battery cell away from the second solder ribbon clamping mechanism.

4. The battery string repair device according to claim 2, wherein: The feeding mechanism includes a basket conveying mechanism, a lifting mechanism, a docking conveying mechanism and a material taking mechanism, wherein: The material basket conveying mechanism is arranged below the material taking mechanism; The lifting mechanism is arranged between the basket conveying mechanism and the material taking 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 conveying mechanism to descend to the basket changing station so that the docking conveying mechanism docks with the basket conveying mechanism; the basket conveying mechanism is configured to convey a basket filled with initial battery cells to the docking conveying mechanism or 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 the cell removal station, so that the initial cell at the bottom of the basket is higher than the material removal mechanism; the material removal mechanism is configured to extend into the basket, and the lifting mechanism is further configured to drive the docking conveying mechanism to descend, so that the initial cell at the bottom of the basket falls onto the material removal mechanism, and the material removal mechanism is further configured to remove the initial cell from the basket; The transfer mechanism picks up the initial battery cells from the material taking mechanism.

5. The battery string repair device according to claim 4, characterized in that: The feeding mechanism further comprises a tidying mechanism arranged on the side of the taking mechanism, and the tidying mechanism is used to correct the position of the initial battery cells taken out from the material basket.

6. The battery string repair device according to claim 5, characterized in that: The material picking mechanism includes a material picking drive unit and a material picking piece, wherein the material picking piece is connected to the driving end of the material picking drive unit. When the material picking drive unit drives the material picking piece to extend into the material basket, the initial battery cell located at the bottom of the material basket falls onto the material picking piece and is adsorbed by the material picking piece; when the material picking drive unit drives the material picking piece to withdraw from the material basket, the initial battery cell is taken out of the material basket.

7. The battery string repair device according to claim 2, wherein: The transfer mechanism includes a first drive module and a first adsorption component connected to the drive end of the first drive module, wherein the first adsorption component is used to adsorb the initial battery cell or the replacement battery cell, and the first drive module is used to drive the first adsorption component to translate and lift, and to drive the first adsorption component to rotate in a horizontal plane.

8. The battery string repair device according to claim 2, wherein: The second solder ribbon clamping mechanism includes a second driving module, a first mounting bracket and a clamping assembly, wherein: The first mounting bracket is connected to the driving end of the second driving module, and the clamping assembly is arranged on the first mounting bracket; The second driving module is used to drive the clamping assembly to move laterally to approach or move away from the carrying platform, and the clamping assembly is used to clamp the end of the first side welding strip or the end of the second side welding strip on the initial battery cell; The second driving module is further used to drive the clamping assembly to move up and down, so that a shear angle is formed between the end of the clamped first-side welding strip or the end of the second-side welding strip and the initial battery cell.

9. The battery string repair device according to claim 2, wherein: The second welding ribbon shearing mechanism includes a third driving module, a second mounting bracket, a fixed cutter, a movable cutter and a cutter driving member, wherein: The second mounting bracket is connected to the driving end of the third driving module; The fixed cutter is fixedly connected to the second mounting bracket, and a plurality of hook knives are arranged side by side and spaced apart at the lower edge of the fixed cutter. A support inclined surface for supporting the welding strip is formed on the hook-shaped portion of the hook knife, and a fixed blade is formed on the upper end of the support inclined surface; The movable cutter is slidably connected to the second mounting bracket and is in contact with the fixed cutter. A movable blade is formed at the lower edge of the movable cutter to cooperate with each of the fixed blades. The driving end of the cutter driving member is connected to the movable cutter, and the cutter driving member is used to drive the movable cutter to slide relative to the fixed cutter, so that the movable cutter switches between the avoidance position and the shearing position; When the movable cutter slides to the avoidance 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 and each fixed blade cooperate to shear the welding strip passing through therebetween.

10. The battery string repair device according to claim 2, wherein: The replacement battery cell preparation mechanism further includes a first detection mechanism; The transfer mechanism is configured to pick up the initial battery cell from the feeding mechanism and transfer the picked up initial battery cell to the first testing mechanism; The first detection mechanism is at least configured to perform position detection and defect detection on the initial battery cell to obtain position information of the initial battery cell and quality information of the initial battery cell; The transport mechanism is further configured to transport the initial battery cells from the first detection mechanism to the carrier platform or the cache platform, and the transport mechanism is further configured to regularize the initial battery cells based on position information of the initial battery cells during transport.

11. The battery string repair device according to claim 10, wherein: The first detection mechanism includes at least one of a visual detection mechanism and an EL detection mechanism.

12. The battery string repair device according to claim 2, wherein: The replacement cell preparation mechanism further includes a second detection mechanism, wherein the buffering platform is disposed on a fourth drive module, and the fourth drive module is configured to drive the buffering platform to translate the replacement cell to be inspected to the second detection mechanism, wherein the second detection mechanism is configured to perform at least one of position detection and defect detection on the replacement cell; The replacement battery cell loading mechanism picks up the replacement battery cell that has been inspected by the second inspection mechanism from the buffer table.

13. The battery string repair device according to claim 2, wherein: The cache station includes a first cache station, a second cache station and a third cache station arranged side by side, wherein: The first buffer station is used to buffer the head replacement battery cells transferred by the transfer mechanism, and the head replacement battery cells are used to replace defective battery cells located at the head of the battery string to be repaired; The second buffer station is used to buffer the tail replacement battery cell transferred by the transfer mechanism, and the tail replacement battery cell is used to replace the defective battery cell at the tail of the battery string to be repaired; The third buffer station is used to buffer the middle replacement battery cell transferred by the transfer mechanism, and 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.

14. The battery string repair device according to claim 1, wherein: The replacement battery cell feeding mechanism includes a fifth drive module, a third mounting bracket and a second adsorption member, wherein: The third mounting bracket is connected to the driving end of the fifth driving module, and the second adsorption member is provided on the third mounting bracket; The fifth driving module is used to drive the second adsorption member to translate and elevate, so as to drive the second adsorption member to absorb the replacement battery cell from the replacement battery cell preparation mechanism and load the replacement battery cell onto the rework platform.

15. The battery string repair device according to claim 1, wherein: The rework platform includes a mounting seat, a middle soldering station, a first side soldering station and a second side soldering station, wherein: The intermediate soldering station can be mounted on the mounting base in a vertically flippable manner, and the intermediate soldering station is used to carry and absorb the defective battery cell and the replacement battery cell in the battery string to be repaired; The first side soldering platform is movably mounted on the mounting base, and is used to support the battery cell on the first side of the defective battery cell and at least be able to absorb the adjacent battery cell on the first side. The first side soldering platform is configured to be able to translate toward or away from the middle soldering platform to achieve docking and separation with the middle soldering platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle soldering platform; The second side soldering station is movably mounted on the mounting base. The second side soldering station is used to support the battery cell on the second side of the defective battery cell and can at least absorb the adjacent battery cell on the second side. The second side soldering station is configured to be able to translate toward or away from the middle soldering station to achieve docking and separation with the middle soldering station, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle soldering station.

16. The battery string repair device according to claim 15, wherein: The rework platform further includes a cleaning mechanism arranged on the side of the middle soldering station; The cleaning mechanism is configured to clean impurities on the intermediate soldering platform after the defective battery cell is removed from the intermediate soldering platform.

17. The battery string repair device according to claim 1, wherein: The first solder strip clamping mechanism includes a sixth driving module, a fourth mounting bracket, an opening and closing driving mechanism, a first guide mounting seat, a second guide mounting seat, an elastic pressing mechanism, and a plurality of first chucks and second chucks arranged in pairs, wherein: The fourth mounting bracket is connected to the driving end of the sixth driving module, and the sixth driving 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 driving end of the opening and closing drive mechanism; The first chucks are arranged side by side, and each of the first chucks is connected to the first guide mounting seat via a first floating assembly so as to float up and down; the second chucks are arranged side by side, and each of the second chucks is connected to the second guide mounting seat via a second floating assembly so as to float up and down, and is capable of rotating in a horizontal plane relative to the second guide mounting seat; The elastic pressing mechanism is mounted on the second guide mounting seat, the elastic pressing mechanism comprising a plurality of elastic pressing assemblies corresponding to the second clamps one by one, the second guide mounting seat being provided with a reference block corresponding to each second clamp, the elastic pressing assembly being used to elastically push the corresponding second clamp to rotate in a 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 pressing assembly can also be elastically deformed when subjected to a reverse force from 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 closer to the middle after the clamping end of the second clamp is aligned with the corresponding clamping end of the first clamp, so that the clamping end of the second clamp cooperates with the corresponding clamping end of the first clamp 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 clamp and the corresponding clamping end of the first clamp release the welding strip.

18. The battery string repair device according to claim 17, wherein: The first floating assembly includes a first guide post, a first spring, a first chuck mounting seat 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 seat, the first chuck mounting seat is slidably sleeved on the first guide post, the first spring is sleeved on the first guide post, the upper end of the first spring abuts against the first guide mounting seat, and the lower end of the first spring abuts against the first chuck mounting seat; The first chuck is mounted on the first chuck mounting seat, and the clamping end of the first chuck extends downwardly out of the first chuck mounting seat; The floating guide assembly is disposed between the first chuck mounting seat and the first guide mounting seat, and is used to limit the first chuck mounting seat to move in a vertical direction.

19. The battery string repair device according to claim 17, wherein: The second floating assembly includes a second guide post, a second spring and a second chuck mounting seat, wherein: The upper and lower ends of the second guide post are respectively fixedly connected to the second guide mounting seat, the second chuck mounting seat is slidably sleeved on the second guide post, the second spring is sleeved on the second guide post, the upper end of the second spring abuts against the second guide mounting seat, and the lower end of the second spring abuts against the second chuck mounting seat; The second chuck is mounted on the second chuck mounting seat, and the clamping end of the second chuck extends downwardly out of the second chuck mounting seat.

20. The battery string repair device according to claim 19, wherein: The elastic pressing assembly includes a fixing frame and a compression spring, wherein the fixing frame is arranged 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 chuck mounting seat; The compression spring elastically pushes the second clamp mounting seat to rotate in a horizontal plane, so as to drive the second clamp to abut against the corresponding reference block.

21. The battery string repair device according to claim 1, wherein: The battery string rework device also includes a first coating mechanism, which is configured to be movable to the rework platform for coating flux on the overlapping portion between 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 coating flux on the overlapping portion between the second side solder strip of the replacement battery cell and the solder strip to be overlapped on the second side adjacent battery cell.

22. The battery string repair device according to claim 21, wherein: 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 driving end of the coating drive assembly, and each of the first coating pens is connected to the driving end of the coating drive assembly via an elastic buffer so as to be telescopically connected up and down, and each of the first coating pens is used to apply flux to a portion to be overlapped; The coating drive assembly is used to drive the first coating pens to move horizontally and vertically, so that each first coating pen contacts or separates from the corresponding welding ribbon; The battery string rework device further includes a first fluid replenishing mechanism disposed on one side of the rework platform, and the first fluid replenishing mechanism is used to replenish flux to each of the first coating pens.

23. The battery string repair device according to claim 1, wherein: The welding mechanism is a laser welding mechanism, and the laser welding mechanism is arranged above the rework platform.

24. The battery string repair device according to claim 1, wherein: The battery strings to be repaired also include a second type of battery strings to be repaired that require repair of defective solder joints; The welding mechanism is also used to weld the cold-weld positions on at least one of the upper surface and the lower surface of the second type of battery string to be repaired carried on the repair platform, so as to re-weld the cold-weld welding ribbons on the battery cells.

25. The battery string repair device according to claim 24, wherein: The battery string repair device further includes a second coating mechanism, which is configured to be movable to the repair platform for coating flux on the upper surface cold solder joint positions of the second type of battery string to be repaired carried on the repair platform.

26. The battery string repair device according to claim 25, wherein: The second coating mechanism includes a seventh driving module, a fifth mounting bracket and a plurality of coating components, wherein: The fifth mounting bracket is connected to the driving end of the seventh driving module; A plurality of coating assemblies are arranged side by side on the fifth mounting bracket, and each coating assembly is capable of coating flux to one welding ribbon; The coating components each include a driving unit and a second coating pen, the driving unit being connected to the fifth mounting bracket, the second coating pen being connected to the driving end of the driving unit, and the driving unit being at least used to drive the second coating pen to rise and fall so that the second coating pen contacts or detaches from the corresponding welding strip.

27. The battery string repair device according to claim 24, wherein: The battery string repair device also includes a feeding gripper and a feeding detection mechanism; The feed detection mechanism is used to detect the defect type and defect location of the battery string to be repaired; The loading gripper is used to pick up the battery string to be repaired from the feeding detection mechanism and load the battery string to be repaired onto the repair platform.

28. The battery string repair device according to claim 27, wherein: The feeding detection mechanism includes a feeding mechanism, a first gripper, a regularization table, a first string inspection mechanism, a second gripper, a feeding EL detection 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 carry the battery string supplied by the feeding mechanism to the aligning table, and the aligning table is used to align the battery string; The first string inspection mechanism is arranged above the sizing table and is used to inspect appearance defects on the upper surface of the battery string; The second gripper is used to transport the battery string from the aligning table to above the loading EL detection mechanism and the second string inspection mechanism, wherein the loading EL detection mechanism is used to perform EL inspection on the battery string, and the second string inspection mechanism is used to detect appearance defects on the lower surface of the battery string; The second gripper is further used to place the battery strings to be repaired after testing on the transfer table, and to place the battery strings that cannot be repaired after testing into the discharge box; The loading gripper picks up the battery string to be repaired from the transfer table.

29. The battery string repair device according to claim 27, wherein: The battery string repair device also includes a third coating mechanism, which is located on the moving path of the loading gripper and is used to coat flux on the lower surface of the second type of battery string to be repaired on the loading gripper.

30. The battery string repair device according to claim 24, wherein: The battery string repair device further includes a pressing mechanism, which is disposed on one side of the repair platform and is used to press the solder strips with cold solder joints in the second type of battery string to be repaired onto the corresponding battery cells.

31. The battery string repair device according to claim 1, wherein: The battery string repair device includes a material unloading gripper, a material discharging EL detection mechanism, a material receiving mechanism, an NG material box and a buffer material box, wherein: The unloading gripper is used to transfer the repaired battery string from the repair platform to the top of the discharge EL detection mechanism; The discharge EL detection mechanism is used to detect the repaired battery string to determine the type of the repaired battery string, and the types of the repaired battery string include battery strings that pass the repair, battery strings that fail the repair and cannot be repaired again, and battery strings that fail the repair and can be repaired again; The unloading gripper is also used to deliver the battery strings that have passed the repair to the receiving mechanism, deliver the battery strings that have failed the repair and cannot be repaired a second time to the NG material box, deliver the battery strings that have failed the repair and can be repaired a second time to the cache material box, and deliver the battery strings that have failed the repair and can be repaired a second time in the cache material box to the repair platform.

Images