Battery string repairing device

Abstract

The utility model provides a battery string repair device. The battery string repair device comprises a repair platform, a replacement battery piece preparation mechanism, a replacement battery piece feeding mechanism, a first welding strip shearing mechanism, a first welding strip clamping mechanism and a welding mechanism. The repair platform is used for bearing a to-be-repaired battery string. 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 to-be-repaired battery string. And the replacement battery piece preparation mechanism is used for processing the initial battery piece into a replacement battery piece. The replacement battery piece feeding mechanism is used for feeding the replacement battery pieces on the replacement battery piece preparation mechanism to the repair platform. The first welding strip clamping mechanism is used for clamping a welding strip on a replacement battery piece and a to-be-lapped welding strip on an adjacent battery piece. And the welding mechanism is used for welding the clamped welding strip for replacing the battery piece and the welding strip to be lapped on the adjacent battery piece. According to the device and the method, automatic preparation of the replacement battery piece is realized, the replacement battery piece is automatically fed to the repair position, and the repair efficiency is improved.

Description

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 there are defective cells in a battery string, the battery string can be repaired. Figure 1 Taking the middle battery string as an example, the connecting ribbon between the defective battery cell 300 and the adjacent battery cell 400 is cut off. The cutting position of the ribbon is as follows: Figure 1 The defective battery cell 300 is removed from the battery string, and a replacement battery cell 500 with a solder strip is placed in the vacant position after the defective battery cell 300 is removed, and the solder strip on the replacement battery cell 500 is overlap-welded with the solder strip on the adjacent battery cell 400.

[0003] In the existing battery string repair device, the replacement battery cells are divided into head replacement battery cells, middle replacement battery cells and tail replacement battery cells according to the position of the defective battery cells to be replaced in the battery string (beginning, middle or end of the string). The length of the solder strips extending out of the battery cells of the three types of replacement battery cells may be different. For example, Figure 2 The tail replacement cell shown in (a) has the solder ribbons on the upper and lower surfaces extending out of the cell by a certain length. Figure 2 For the middle replacement cell shown in (b), the soldering ribbon group on the upper surface does not need to extend out of the cell, but the soldering ribbon group on the lower surface needs to extend out of the cell by a certain length. However, for the pre-prepared initial cell, the soldering ribbon groups on the upper and lower surfaces extend out of the cell by a uniform length. Therefore, when the soldering ribbon extension lengths on both sides of the initial cell cannot meet the requirements of the replacement cell for the soldering ribbon extension length, it is necessary to first cut the soldering ribbon on the initial cell to obtain the required type of replacement cell, and then load the replacement cell to the rework position.

[0004] Traditional battery string repair devices are unable to cut the solder strips on the initial battery cells. The current solution is to manually cut the solder strips on the initial battery cells offline to obtain the required type of replacement battery cells, and then manually feed the replacement battery cells to the battery string repair device for use. The low degree of automation leads to low efficiency in battery string repair. Utility Model Content

[0005] In view of the above technical problems, the present application provides a battery string repair device, and its detailed technical solution is as follows:

[0006] A battery string repair device comprises a repair platform, a replacement battery cell preparation mechanism, a replacement battery cell feeding mechanism, a first welding strip shearing mechanism, a first welding strip clamping mechanism and a welding mechanism, wherein:

[0007] The repair platform is used to carry the battery strings to be repaired, and the battery strings to be repaired include at least the first type of battery strings to be repaired for which the cells are to be replaced;

[0008] The first welding strip cutting mechanism is arranged at one side of the repair platform, and is used to cut the welding strip between the defective battery cell to be replaced and the adjacent battery cell in the first type of battery string to be repaired, wherein the adjacent battery cell includes at least one of the first side adjacent battery cell and the second side adjacent battery cell;

[0009] The replacement cell preparation mechanism is used to process the initial cell into a replacement cell, wherein the upper surface of the initial cell is connected to a first side welding strip 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 strip extending outwardly from a second side of the initial cell, and the replacement cell preparation mechanism is configured to cut at least one of the first side welding strip and the second side welding strip 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;

[0010] 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 to the defective position in the first type of cell string to be repaired on the repair platform, the defective position being the position vacated after the defective cell is removed from the first type of cell string to be repaired;

[0011] The first solder strip clamping mechanism is disposed 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, 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;

[0012] 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 is used 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.

[0013] By cooperating with the replacement cell feeding mechanism, the first solder strip shearing mechanism, the first solder strip clamping mechanism and the welding mechanism, the battery string repair device of the present application realizes the replacement and repair of defective cells in the battery string. In particular, by setting the replacement cell preparation mechanism and the replacement cell feeding mechanism, the battery string repair device of the present application realizes the automatic shearing of the solder strip on the initial cell to obtain the required type of replacement cell, and automatically feeds the replacement cell to the repair position, thereby improving the efficiency of the battery string repair.

[0014] In some embodiments, the replacement battery cell preparation mechanism includes a feeding mechanism, a transfer mechanism, a carrying table, a second solder strip clamping mechanism, a second solder strip cutting mechanism and a cache table, 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 carrying table; the carrying table is used to adsorb and fix the initial battery cell; the second solder strip clamping mechanism is located on one side of the carrying table, and the second solder strip clamping mechanism is used to clamp the end of the solder strip on the side of the initial battery cell close to the second solder strip clamping mechanism; the second solder strip cutting mechanism is used to cut the end of the solder strip 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 table; the replacement battery cell loading mechanism is used to pick up the replacement battery cell from the cache table.

[0015] Through the cooperation of the feeding mechanism, the transfer mechanism, the carrying table, the second solder strip clamping mechanism, the second solder strip cutting mechanism and the cache table, 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 table, so that the replacement battery cell loading mechanism can obtain the replacement battery cell from the cache table, thereby improving the loading efficiency of the replacement battery cell, and then improving the battery string rework efficiency.

[0016] In some embodiments, the second solder strip cutting mechanism is further used to cut the end of the solder strip on one side of the initial battery cell away from the second solder strip clamping mechanism.

[0017] According to the type of replacement battery cell to be prepared, when it is necessary to cut the welding strips on both sides of the initial battery cell, the second welding strip cutting mechanism can be used to cut the welding strip on the other side of the initial battery cell again, with a simple structural design and low cost.

[0018] 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 emptied 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.

[0019] 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 taking out of the initial battery cells in the basket, thereby realizing the automatic feeding of the initial battery cells.

[0020] 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.

[0021] By arranging a regularization mechanism on the side of the material taking mechanism, the position of the taken out initial battery cell is corrected, and finally it is ensured that the transfer mechanism can smoothly pick up the initial battery cell from the material taking mechanism.

[0022] 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, and 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.

[0023] A material taking mechanism with a simple structure is provided, which drives a material taking sheet to take out initial battery sheets from a material basket through a material taking driving part, has a fast material taking speed, and can prevent the taken out initial battery sheets from slipping.

[0024] 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.

[0025] The first drive module drives the first adsorption member to translate and lift, thereby driving the first adsorption member to adsorb the initial battery cell or the replacement battery cell and implement the transportation of 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.

[0026] In some embodiments, the second solder 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 solder strip or the end of the second side solder 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 clamped end of the first side solder strip or the end of the second side solder strip and the initial battery cell.

[0027] The second driving module drives the clamping assembly to move horizontally, ensuring that the clamping assembly can align with the end of the first side welding strip or the end of the second side welding strip. The second driving module drives the clamping assembly to rise and fall, so that the end of the clamped first side welding strip or the end of the second side welding strip forms a shearing angle with the initial battery cell, ensuring that the second welding strip shearing mechanism can smoothly cut the end of the first side welding strip or the end of the second side welding strip.

[0028] In some embodiments, the second welding strip 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 intervals at the lower edge of the fixed cutter, and a supporting inclined surface for supporting the welding strip 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 cooperating 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 the avoidance position and the shearing position; when the movable cutter slides to the avoidance position, a gap for the welding strip 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 strip passing therebetween.

[0029] By setting the second welding strip shearing mechanism, the second welding strip shearing mechanism can shear the flat welding strip, by extending the hook-shaped knife under the welding strip and using the supporting inclined surface to support the inclined flat welding strip, and fixing the cutting knife to shear the welding strip along the thickness direction of the flat welding strip, ensuring that the flat welding strip remains in its original state after shearing, without distortion, and the cut surface is flat and free of burrs. Of course, the shearing assembly is also suitable for shearing round welding strips.

[0030] 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.

[0031] By setting up the first detection mechanism, the position detection and quality detection of the initial battery cells are realized, so that the transport mechanism can transport the initial battery cells to a suitable position according to the detection results, and can also regularize the position of the initial battery cells according to the detection results for subsequent use.

[0032] In some embodiments, the first detection mechanism includes at least one of a visual detection mechanism and an EL detection mechanism.

[0033] The internal defects and appearance defects of the initial battery cells are detected, preventing bad initial battery cells from flowing into the subsequent processes.

[0034] 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, and 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, and 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.

[0035] The position detection and defect detection of the completed replacement battery cells are realized, so as to prevent the defective replacement battery cells from flowing into the subsequent repair process.

[0036] 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.

[0037] 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.

[0038] In some embodiments, the replacement battery cell loading mechanism includes a fifth driving 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 arranged on the third mounting bracket; the fifth driving module is used to drive the second adsorption member to translate and lift, so as to drive the second adsorption member to absorb the replacement battery cell from the replacement battery cell preparation mechanism, and to load the replacement battery cell onto the rework platform.

[0039] A replacement battery cell loading mechanism with a simple structure is provided, which drives the second adsorption member to translate and lift through a fifth drive module 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 a rework platform.

[0040] 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, 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, the first side soldering station is used to carry battery cells on the first side of the defective battery cells and can at least absorb adjacent battery cells on the first side, 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, the second side soldering station is used to carry battery cells on the second side of the defective battery cells and can at least absorb adjacent battery cells on the second side, 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.

[0041] 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, and 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 welding table surface. 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 surface, 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 off 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 strip shearing mechanism to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0042] 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.

[0043] When defective cells are removed from the first type of cell string to be repaired, impurities such as solder slag and cell slag will fall on the middle soldering station. If not cleaned in time, it will affect the quality of subsequent repairs. The cleaning mechanism on the side of the middle soldering station can realize the timely removal of impurities on the middle soldering station.

[0044] In some embodiments, the first welding 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 clamping 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 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 via a first floating component so as to float up and down; the second chucks are arranged side by side, and each second chuck is connected to the second guide mounting seat via a second floating component so as to 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 clamping mechanism includes a plurality of elastic clamping components corresponding to the second chucks one by one, and a reference block is respectively arranged on the second guide mounting seat corresponding to each second chuck, and the elastic clamping component is used to elastically push the corresponding second chuck to rotate in a horizontal plane to abut against the corresponding reference block, so that the clamping end of each second chuck is aligned with the clamping end of the corresponding first chuck; the elastic clamping component can also undergo elastic deformation when subjected to the reverse force of the corresponding second chuck; 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 chuck is aligned with the clamping end of the corresponding first chuck, so that the clamping end of the second chuck cooperates with the clamping end of the corresponding first chuck to clamp the welding strip; the opening and closing 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 chuck releases the welding strip from the clamping end of the corresponding first chuck.

[0045] A first solder strip clamping mechanism is provided, wherein each first clamp and each second clamp can be connected to a 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 to contact the battery sheet, 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 solder strip clamping mechanism can also adaptively adjust the angle of the clamping end of the second clamp in the horizontal direction, thereby ensuring that the clamping end of the second clamp can be aligned before clamping the solder strip. 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 to cause elastic deformation of the elastic clamping component. When the tin beads melt again during the welding process, the second clamp can be rotated back to the reference position again under the action of the elastic clamping 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.

[0046] 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 mounted on the first guide column, the first spring is mounted 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, and is used to limit the first chuck mounting seat to vertical movement.

[0047] A first floating assembly with a simple structure is provided, which realizes the floating connection between the first clamp mounting seat and the first guide mounting seat through the expansion and contraction adjustment of the first spring, so that the first clamp can realize the adaptive adjustment of the relative position in the height direction after it descends and contacts the battery sheet. In addition, by setting the floating guide assembly, the first clamp can only float up and down along the first guide column and cannot rotate around the first guide column, which ensures that the first clamp will not deflect after floating in the height direction, and finally ensures that after the second clamp abuts against the reference block, the clamping end of the second clamp can be aligned with the clamping end of the first clamp.

[0048] 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 mounted on the second guide column, the second spring is mounted 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 mounted on the second chuck mounting seat, and the clamping end of the second chuck extends downward from the second chuck mounting seat.

[0049] A second floating assembly with a simple structure is provided, which realizes a floating connection between a second clamp mounting seat and a second guide mounting seat through the telescopic adjustment of a 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, thereby driving the second clamp to realize rotation in a horizontal plane.

[0050] In some embodiments, the elastic clamping assembly includes a fixed frame and a compression spring, wherein the fixed frame is arranged on the second guide mounting seat, the first end of the compression spring elastically abuts against the fixed frame, and the second end of the compression spring elastically abuts against the second chuck mounting seat; the compression spring elastically pushes the second chuck mounting seat to rotate in a horizontal plane to drive the second chuck to abut against the corresponding reference block.

[0051] 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.

[0052] In some embodiments, the battery string rework device also includes a first coating mechanism, which is configured to be movable to the rework platform, and is used to coat 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 is used to coat 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.

[0053] Before welding the first side welding strip of the replacement cell and the welding strip to be overlapped on the first side adjacent cell, the first coating mechanism first applies flux to the overlapping portion of the first side welding strip of the replacement cell and the welding strip to be overlapped on the first side adjacent cell, so as to ensure the welding quality of the first side welding strip of the replacement cell and the welding strip to be overlapped on the first side adjacent cell. Similarly, before welding the second side welding strip of the replacement cell and the welding strip to be overlapped on the second side adjacent cell, the first coating mechanism first applies flux to the overlapping portion of the second side welding strip of the replacement cell and the welding strip to be overlapped on the second side adjacent cell, so as to ensure the welding quality of the second side welding strip of the replacement cell and the welding strip to be overlapped on the second side adjacent cell.

[0054] 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 portion to be overlapped; the coating drive assembly is used to drive the plurality of first coating pens to translate and lift, so that each first coating pen contacts or detaches from the corresponding solder strip; the battery string rework device also includes a first liquid replenishing mechanism arranged on one side of the rework platform, and the first liquid replenishing mechanism is used to replenish flux to each first coating pen.

[0055] The first coating mechanism uses a coating pen to coat the soldering tape with flux, which can achieve spot coating of the soldering tape. Compared with the spraying method, the coating accuracy is higher and the amount of soldering flux used is more saved. At the same time, each coating pen can be connected to the driving end of the coating driving assembly in a telescopic manner, thereby ensuring that each coating pen can contact the corresponding soldering tape after descending, ensuring the soldering flux coating effect on all soldering tapes.

[0056] In some embodiments, the welding mechanism is a laser welding mechanism, and the laser welding mechanism is disposed above the rework platform.

[0057] The laser welding mechanism performs repair 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.

[0058] In some embodiments, the battery string to be repaired also includes a second type of battery string to be repaired whose cold welds need 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 onto the battery cells.

[0059] The second type of battery strings to be repaired with cold solder joint defects can be repaired.

[0060] In some embodiments, the battery string rework device further includes a second coating mechanism, which is configured to be movable to the rework platform for coating flux on the upper surface cold solder joint positions of the second type of battery string to be reworked carried on the rework platform.

[0061] By setting up the second coating mechanism, the flux coating on the cold solder joint positions on the upper surface of the second type of battery strings to be repaired is achieved, thereby improving the quality of the cold solder joint repair of the second type of battery strings to be repaired.

[0062] 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 unit and a second coating pen, the driving unit is connected to the fifth mounting bracket, and the second coating pen is connected to the driving end of the driving unit, and the driving unit 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.

[0063] The second coating mechanism uses a coating pen to coat the soldering flux on the solder strip, which can achieve spot coating on the solder strip. Compared with the spraying method, the coating accuracy is higher and the amount of soldering flux used is more economical. Each coating pen is independently lifted and lowered by its own driving unit, so that when each coating pen moves above the target solder strip, the coating pen corresponding to the solder strip 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 solder strip. In this way, accurate spot coating of the cold solder strip is achieved, avoiding contamination of other solder strip areas, and further saving soldering flux.

[0064] In some embodiments, the battery string rerepair device also 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 to the rerepair platform.

[0065] By setting up a feeding detection mechanism, the defect type and defect location of the battery string to be repaired can be detected. By setting up a loading gripper, the battery string to be repaired after the inspection is automatically loaded onto the repair platform.

[0066] In some embodiments, the feeding detection mechanism includes a loading mechanism, a first gripper, a tidying table, a first string inspection mechanism, a second gripper, a loading EL inspection mechanism, a second string inspection mechanism, a transfer table and a discharge box, wherein: the loading mechanism is used to supply battery strings; the first gripper is used to transport the battery strings supplied by the loading mechanism to the tidying table, and the tidying table is used to organize the battery strings; the first string inspection mechanism is arranged above the tidying table, and is used to detect the appearance defects on the upper surface of the battery string; the second gripper is used to transport the battery string from the tidying table to above the loading EL inspection mechanism and the second string inspection mechanism, wherein the loading EL inspection mechanism is used to perform EL inspection on the battery string, and the second string inspection mechanism is used to detect the appearance defects on the lower surface of the battery string; the second gripper is also used to place the battery string to be repaired after inspection on the transfer table, and to place the battery string that cannot be repaired after inspection into the discharge box; the loading gripper picks up the battery string to be repaired from the transfer table.

[0067] By setting up the feeding detection mechanism, the feeding detection mechanism realizes the detection of cold solder joints, internal defects and appearance defects of the battery string, so as to determine whether the battery string belongs to a battery string to be repaired or a 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.

[0068] 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 is used to coat flux on the lower surface of the second type of battery string to be repaired on the loading gripper.

[0069] By setting up the third coating mechanism, the flux coating on the cold solder joint positions on the lower surface of the second type of battery strings to be repaired is achieved, thereby improving the quality of the cold solder joint repair of the second type of battery strings to be repaired.

[0070] 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.

[0071] The soldering ribbons with cold solder joints in the second type of battery string to be repaired are pressed onto the corresponding battery cells by a pressing mechanism to ensure that the soldering ribbons with cold solder joints can be re-welded to the corresponding battery cells.

[0072] In some embodiments, the battery string rework device includes a material unloading gripper, a material discharging EL detection mechanism, a material receiving mechanism, an NG material box and a cache material box, wherein: the material unloading gripper is used to transfer the repaired battery string from the rework platform to the top of the material discharging EL detection mechanism; the material 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 string include battery strings that pass the repair, battery strings that fail the repair and cannot be reworked for a second time, and battery strings that fail the repair and can be reworked for a second time; the material unloading gripper is also used to send the battery strings that pass the repair to the material receiving mechanism, send the battery strings that fail the repair and cannot be reworked for a second time to the NG material box, send the battery strings that fail the repair and can be reworked for a second time to the cache material box, and send the battery strings that fail the repair and can be reworked for a second time in the cache material box to the rework platform.

[0073] By setting up a material unloading gripper, a material discharging EL detection mechanism, a material receiving mechanism, an NG material box and a buffer material box, the inspection of the repaired battery strings is realized to determine the types 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 a second repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] Figure 1 This is a schematic diagram of the battery string repair;

[0075] Figure 2 It is a schematic diagram of the structure of two replacement battery cells;

[0076] Figure 3 A schematic diagram of the structure of a battery string repair device according to an embodiment of the present application at one viewing angle;

[0077] Figure 4 A schematic diagram of the structure of the battery string repair device according to an embodiment of the present application from another perspective;

[0078] Figure 5 for Figure 4 A partial enlarged view of area A;

[0079] Figure 6 for Figure 4 A local enlarged view of area B;

[0080] Figure 7 for Figure 4 A local enlarged view of the C region;

[0081] Figure 8 It is a structural schematic diagram of the feeding mechanism in the embodiment of the present application;

[0082] Fig. 9It is a structural schematic diagram of the transfer mechanism in the embodiment of the present application;

[0083] Fig.10 It is a structural schematic diagram of the carrying platform, the second welding ribbon clamping mechanism and the second welding ribbon shearing mechanism in the embodiment of the present application;

[0084] Fig.11 It is a schematic structural diagram of the second welding ribbon clamping mechanism in an embodiment of the present application at one viewing angle;

[0085] Fig.12 is a schematic structural diagram of the second welding ribbon clamping mechanism in the embodiment of the present application from another viewing angle;

[0086] Fig.13 for Fig.12 AA section view;

[0087] Fig.14 This is a schematic diagram of the structure of the second welding strip shearing mechanism in the embodiment of the present application;

[0088] Fig.15 It is a structural schematic diagram of a replacement battery cell loading mechanism in an embodiment of the present application;

[0089] Fig.16 It is a structural schematic diagram of components such as a rework platform, a first solder strip shearing mechanism, and a first solder strip clamping mechanism in an embodiment of the present application;

[0090] Fig.17 This is a schematic structural diagram of the first welding ribbon clamping mechanism in an embodiment of the present application at a first viewing angle;

[0091] Fig.18 It is a schematic structural diagram of the first welding ribbon clamping mechanism in the embodiment of the present application at a second viewing angle;

[0092] Fig.19 Schematic diagram of the structure of the first welding ribbon clamping mechanism in the embodiment of the present application at a third viewing angle;

[0093] Fig. 20 2 is a schematic structural diagram of the first welding ribbon clamping mechanism in the embodiment of the present application at a fourth viewing angle;

[0094] Fig.21 for Fig. 20 A local enlarged view of the D region in FIG.

[0095] Fig. 22 It is a schematic diagram of the structure of the first chuck and the second chuck in the embodiment of the present application;

[0096] Fig.23 It is a structural schematic diagram of the first coating mechanism in the embodiment of the present application at a first viewing angle;

[0097] Fig.24 It is a schematic structural diagram of the first coating mechanism in the embodiment of the present application at a second viewing angle;

[0098] Fig.25 for Fig.24 BB cross-sectional view;

[0099] Fig.26 This is a schematic diagram of the structure of the second coating mechanism in the embodiment of the present application;

[0100] Figures 1 to 26 Included:

[0101] Rework Platform 1:

[0102] Mounting seat 11, middle soldering station 12, first side soldering station 13, second side soldering station 14, flip drive

[0103] Mechanism 15, first side soldering station driving mechanism 16, second side soldering station driving mechanism 17;

[0104] Replacement battery cell preparation mechanism 2:

[0105] Feeding mechanism 21: basket conveying mechanism 211, empty basket conveying unit 2111, full basket conveying unit 2112, lateral drive unit 2113, lifting mechanism 212, docking conveying mechanism 213, material taking mechanism 214, material taking drive unit 2141, material taking sheet 2142, and tidying mechanism 215;

[0106] The transfer mechanism 22 includes a first drive module 221 , a first adsorption member 222 , an X-axis drive module 2211 , a Y-axis drive module 2212 , a Z-axis drive module 2213 , and a rotation drive module 2214 ;

[0107] Carrying platform 23;

[0108] The second welding ribbon clamping mechanism 24 includes a second driving module 241 , a first mounting bracket 242 , a clamping assembly 243 , a pressure plate 2431 , a rotating shaft 2432 , a clamping claw 2433 , and a clamping claw driving member 2434 ;

[0109] The second welding strip shearing mechanism 25 includes a second mounting bracket 251, a fixed cutter 252, a movable cutter 253, a cutter driving member 254, and a hooking knife 255;

[0110] Cache stations 26: a first cache station 261, a second cache station 262, and a third cache station 263;

[0111] A first detection mechanism 27, a second detection mechanism 28;

[0112] Replace the battery cell feeding mechanism 3:

[0113] A fifth driving module 31, a third mounting bracket 32, and a second adsorption member 33;

[0114] The first welding strip shearing mechanism 4:

[0115] The first welding strip clamping mechanism 5:

[0116] Fourth mounting bracket 51;

[0117] Opening and closing driving mechanism 52;

[0118] A first guide mounting seat 53;

[0119] A second guide mounting seat 54;

[0120] Elastic pressing mechanism 55: elastic pressing assembly 551, fixing frame 5511, compression spring 5512;

[0121] First chuck 56:

[0122] A first bottom surface 561, a second bottom surface 562, a first side elevation surface 563, and a first through hole 564;

[0123] Second chuck 57:

[0124] A third bottom surface 571, a fourth bottom surface 572, a second side elevation surface 573, and a second through hole 574;

[0125] The first floating assembly 58 includes a first spring 581, a first chuck mounting seat 582, and a floating guide assembly 583;

[0126] Second floating assembly 59: second chuck mounting seat 591;

[0127] Welding mechanism 6:

[0128] First coating mechanism 7:

[0129] Coating drive assembly 71;

[0130] Mounting plate 72;

[0131] A first coating pen 73;

[0132] Elastic buffer 74: limit screw 741, mounting seat 742, floating groove 743, spring 744;

[0133] A second coating mechanism 8;

[0134] Fifth mounting bracket 81: mounting back plate 811, adapter plate 812, adapter plate driving assembly 813;

[0135] Coating assembly 82: driving unit 821, second coating pen 822;

[0136] Feeding gripper 9:

[0137] Feed detection mechanism 10:

[0138] First grip 101;

[0139] Regular platform 102;

[0140] A second gripper 103;

[0141] Feeding EL detection mechanism 104;

[0142] Discharge box 106;

[0143] A third coating mechanism 110;

[0144] A clamping mechanism 120;

[0145] Unloading gripper 130;

[0146] Discharging EL detection mechanism 140;

[0147] A first fluid replenishing mechanism 180;

[0148] A second fluid replenishing mechanism 150;

[0149] NG material box 160;

[0150] Cache material box 170;

[0151] A first welding ribbon 100 , a second welding ribbon 200 , a defective battery cell 300 , an adjacent battery cell 400 , a replacement battery cell 500 , and a material basket 600 . DETAILED DESCRIPTION

[0152] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0153] like Figures 3 to 7 As shown, the battery string repair device provided in the present application includes a repair platform 1, a replacement battery cell preparation mechanism 2, a replacement battery cell feeding mechanism 3, a first welding ribbon shearing mechanism 4, a first welding ribbon clamping mechanism 5 and a welding mechanism 6, wherein:

[0154] The repair platform 1 is used to carry the battery strings to be repaired, and the battery strings to be repaired include at least the first type of battery strings to be repaired whose cells need to be replaced.

[0155] The first welding strip cutting mechanism 4 is arranged on one side of the repair platform 1, and is used to cut the welding strip between the defective battery cell to be replaced and the adjacent battery cell in the first type of battery string to be repaired, and the adjacent battery cell includes at least one of the first side adjacent battery cell and the second side adjacent battery cell. Among them, the adjacent battery cell refers to the battery cell adjacent to the defective battery cell in the battery string, and the first side adjacent battery cell and the second side adjacent battery cell refer to the adjacent battery cells located on the first side and the second side of the defective battery cell in the battery string respectively.

[0156] The replacement cell preparation mechanism 2 is used to process the initial cell into a replacement cell. The upper surface of the initial cell is connected to a first side welding strip extending outwardly from the first side of the initial cell, and the lower surface of the initial cell is connected to a second side welding strip extending outwardly from the second side of the initial cell. The replacement cell preparation mechanism 2 is configured to cut at least one of the first side welding strip and the second side welding strip to obtain a replacement cell. The replacement cell includes at least one of a head replacement cell, a middle replacement cell, and a tail replacement cell.

[0157] The initial cell may be prepared by welding in advance, that is, the first side welding strip and the second side welding strip are welded to the upper surface and the lower surface of the cell, respectively. Alternatively, the initial cell may also be prepared by bonding in advance, that is, the first side welding strip and the second side welding strip are bonded to the upper surface and the lower surface of the cell, respectively, through glue points or tapes. The connection method between the welding strip and the cell in the initial cell depends on the connection method between the welding strip and the cell in the cell string to be repaired.

[0158] In order to ensure that the initial cell can be cut and prepared into a head replacement cell, a middle replacement cell or a tail replacement cell according to the need for rework, it is required that the length of the first side welding strip and the second side welding strip on the initial cell extending from the initial cell is at least equal to the length of the longer welding strip group on any of the head replacement cell, the middle replacement cell and the tail replacement cell extending from the replacement cell. During the preparation process, according to the specific type of replacement cell to be prepared, the replacement cell preparation mechanism 2 selects to cut the first side welding strip or the second side welding strip, or cuts both the first side welding strip and the second side welding strip.

[0159] The replacement cell loading mechanism 3 is used to pick up replacement cells from the replacement cell preparation mechanism 2, and load the picked-up replacement cells 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.

[0160] 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 with the solder strip to be overlapped on the adjacent battery cell on the first side, and is used to clamp the second side solder strip of the replacement battery cell located at the defective position with the solder strip to be overlapped on the adjacent battery cell on the second side.

[0161] 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.

[0162] Taking the case where the replacement battery cell is in the middle of the first type of battery string to be repaired (i.e., not the head or the tail of the string) as an example, the optional repair process of the battery string repair machine of the utility model is as follows:

[0163] First, the first type of battery string to be repaired is loaded onto the repair platform 1. Then, 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. A defective position is vacated at the position where the defective battery cell is removed, and there are solder strips to be overlapped remaining after cutting on the adjacent battery cells on the first side and the adjacent battery cells on the second side on both sides of the defective position. At the same time, the replacement battery cell preparation mechanism 2 processes the initial battery cell into a replacement battery cell.

[0164] Next, the replacement cell loading mechanism 3 is controlled to pick up the replacement cell from the replacement cell preparation mechanism 2, and load the picked-up replacement cell to the defect position.

[0165] Next, the first welding strip clamping mechanism 5 is controlled to clamp the first side welding strip of the replacement battery cell with the welding strip to be overlapped on the adjacent battery cell on the first side, and then the welding mechanism 6 welds the first side welding strip of the clamped replacement battery cell with the welding strip to be overlapped on the adjacent battery cell on the first side together.

[0166] Finally, the first welding strip clamping mechanism 5 is controlled to clamp the second side welding strip of the replacement battery cell with the welding strip to be overlapped on the second side adjacent battery cell, and then the welding mechanism 6 welds the second side welding strip of the clamped replacement battery cell with the welding strip to be overlapped on the second side adjacent battery cell.

[0167] It can be seen that, through the cooperation of the replacement cell feeding mechanism 3, the first solder strip cutting mechanism 4, the first solder strip clamping mechanism 5 and the welding mechanism 6, the battery string repair device of the present application realizes the replacement and repair of defective cells in the battery string. In particular, by setting the replacement cell preparation mechanism 2 and the replacement cell feeding mechanism 3, the battery string repair device of the embodiment of the present application realizes the automatic cutting of the solder strip on the initial cell to obtain the required type of replacement cell, and automatically feeds the replacement cell to the repair position, thereby improving the efficiency of the battery string repair.

[0168] When the defective cell is at the head of the first type of cell string to be repaired, after the defective cell is cut and removed, there is no adjacent cell on the first side of the defective position, and the second side of the defective position is the second side adjacent cell. In this case, after the replacement cell is loaded to the defective position on the repair platform 1, the first welding strip clamping mechanism 5 is controlled to clamp the second side welding strip of the replacement cell with the welding strip to be overlapped on the second side adjacent cell. Finally, the welding mechanism 6 is controlled to weld the second side welding strip of the clamped replacement cell with the welding strip to be overlapped on the second side adjacent cell.

[0169] When the defective cell is at the end of the first type of cell string to be repaired, after the defective cell is cut and removed, there is no adjacent cell on the second side of the defective position, and the first side of the defective position is the first side adjacent cell. In this case, after the replacement cell is loaded to the defective position on the repair platform 1, the first welding strip clamping mechanism 5 is controlled to clamp the first side welding strip of the replacement cell with the welding strip to be overlapped on the first side adjacent cell. Finally, the welding mechanism 6 is controlled to weld the first side welding strip of the clamped replacement cell with the welding strip to be overlapped on the first side adjacent cell.

[0170] like Figures 3 to 5 As shown, optionally, the replacement battery cell preparation mechanism 2 includes a feeding mechanism 21, a transfer mechanism 22, a carrier 23, a second solder strip clamping mechanism 24, a second solder strip shearing mechanism 25 and a cache 26, wherein: the feeding mechanism 21 is used to supply the initial battery cell. The transfer mechanism 22 is used to pick up the initial battery cell from the feeding mechanism 21 and transfer the initial battery cell to the carrier 23. The carrier 23 is used to adsorb and fix the initial battery cell, the second solder strip clamping mechanism 24 is located on one side of the carrier 23, and the second solder strip clamping mechanism 24 is used to clamp the end of the solder strip on the side of the initial battery cell close to the second solder strip clamping mechanism 24. The second solder strip shearing mechanism 25 is used to shear the end of the solder strip on the clamped initial battery cell to obtain a replacement battery cell. The transfer mechanism 22 is also used to transfer the replacement battery cell to the cache 23. The replacement battery cell loading mechanism 3 is used to pick up the replacement battery cell from the cache 23.

[0171] It can be seen that, through the cooperation of the feeding mechanism 21, the transfer mechanism 22, the carrying platform 23, the second solder strip clamping mechanism 24, the second solder strip cutting mechanism 25 and the buffering platform 26, the replacement cell preparation mechanism 2 realizes the automatic cutting of the ends of the solder strip group on the initial cell, so as to automatically prepare the replacement cell for repair. In addition, by caching the replacement cell on the buffering platform 26, the replacement cell feeding mechanism 3 can obtain the replacement cell from the buffering platform 26, thereby improving the feeding efficiency of the replacement cell, and then improving the efficiency of the battery string repair.

[0172] Depending on the type of replacement cell to be prepared, it is sometimes necessary to cut the solder strips on both sides of the initial cell to obtain the desired replacement cell. To solve this problem, the second solder strip cutting mechanism 25 is optionally used to cut the end of the solder strip on one side of the initial cell away from the second solder strip clamping mechanism 24.

[0173] Optionally, the second solder strip cutting mechanism 25 is used to cut 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 180° and puts 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 one side of the initial battery cell away from the second solder strip clamping mechanism 24, and cuts the solder strip without clamping the end of the solder strip.

[0174] like Figure 8As shown, optionally, the feeding mechanism 21 includes a basket conveying mechanism 211, a lifting mechanism 212, a docking conveying mechanism 213 and a material taking mechanism 214, wherein: the basket conveying mechanism 211 is arranged below the material taking mechanism 214. The lifting mechanism 212 is arranged between the basket conveying mechanism 211 and the material taking mechanism 214, and the docking conveying mechanism 213 is connected to the movable part of the lifting mechanism 212. The lifting mechanism 212 is configured to drive the docking conveying mechanism 213 to descend to the basket changing station, so that the docking conveying mechanism 213 docks with the basket conveying mechanism 211. The basket conveying mechanism 211 is configured to convey the basket 600 filled with initial battery cells to the docking conveying mechanism 213 or receive the empty basket 600 output by the docking conveying mechanism 213. The lifting mechanism 212 is also configured to drive the docking conveying mechanism 213 to rise to the film taking station, so that the initial battery cell at the bottom of the basket 600 is higher than the material taking mechanism 214. The material taking mechanism 214 is configured to extend into the material basket 600, and the lifting mechanism 212 is also configured to drive the docking conveying mechanism 213 to descend, so that the initial battery cell located at the bottom of the material basket 600 in the material basket 600 falls onto the material taking mechanism 214, and the material taking mechanism 214 is also configured to take the initial battery cell out of the material basket 600. The transfer mechanism 22 picks up the initial battery cell from the material taking mechanism 214.

[0175] Optionally, a plurality of storage slots arranged at intervals in the vertical direction are provided in the material basket 600, and an initial battery cell is stored in each storage slot.

[0176] The optional feeding process of the feeding mechanism 21 is as follows:

[0177] First, the lifting mechanism 212 drives the docking conveying mechanism 213 to descend to the basket changing station, so that the docking conveying mechanism 213 docks with the basket conveying mechanism 211. The basket conveying mechanism 211 then conveys the basket 600 filled with initial battery cells to the docking conveying mechanism 213.

[0178] Next, the lifting mechanism 212 drives the docking conveying mechanism 213 to rise to the cell taking station, so that the initial cell at the bottom of the basket 600 is higher than the taking mechanism 214 , and the taking mechanism 214 then extends into the basket 600 .

[0179] 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 material taking mechanism 214. The material taking mechanism 214 then takes the initial battery cell out of the basket 600.

[0180] 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 and 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 immediately takes the initial battery cell out of the material basket 600.

[0181] By analogy, the material taking mechanism 214 takes out all the initial battery cells in the material basket 600 in sequence, and the transfer mechanism 22 takes away the initial battery cells from the material taking mechanism 214 .

[0182] When all the initial battery cells in the basket 100 are removed, the lifting mechanism 212 drives the docking conveying mechanism 213 to descend to the basket changing station again, so that the docking conveying mechanism 213 docks with the basket conveying mechanism 211. The docking conveying mechanism 213 conveys the emptied basket 600 to the basket conveying mechanism 211, and receives the next basket 600 filled with battery cells input by the basket conveying mechanism 211.

[0183] 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.

[0184] Optional, such as Figure 8 As shown, the basket conveying mechanism 211 includes an empty basket conveying portion 2111 and a full basket conveying portion 2112 which are arranged side by side, and a transverse driving portion 2113 which drives the empty basket conveying portion 2111 and the full basket conveying portion 2112 to translate synchronously.

[0185] When the docking conveying mechanism 213 carries the emptied basket 600 and descends to the basket changing station, the transverse driving unit 2113 drives the empty basket conveying unit 2111 and the full basket conveying unit 2112 to move in parallel, so that the empty basket conveying unit 2111 docks with the docking conveying mechanism 213, so that the docking conveying mechanism 213 conveys the emptied basket 600 to the empty basket conveying unit 2111, and the empty basket conveying unit 2111 conveys the emptied basket 600 to the loading station far away from the docking conveying mechanism 213. Then, the transverse driving unit 2113 drives the empty basket conveying unit 2111 and the full basket conveying unit 2112 to move in parallel, so that the full basket conveying unit 2112 docks with the docking conveying mechanism 213, and the full basket conveying unit 2112 conveys another basket 600 full of battery cells to the docking conveying mechanism 213.

[0186] In another optional embodiment, the feeding mechanism 21 can prepare the initial battery cell by itself, that is, the feeding mechanism 21 can weld or bond the first side welding strip and the second side welding strip to the battery cell by itself. 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 forms of cache mechanisms, and the transfer mechanism 22 picks up the cached initial battery cells from the feeding mechanism 21.

[0187] Continue to refer Figure 8 As shown, optionally, the feeding mechanism 21 also includes a tidying mechanism 215 arranged on the side of the picking mechanism 214, and the tidying mechanism 125 is used to correct the position of the initial battery cells taken out from the basket 600, thereby ensuring that the transfer mechanism 22 can smoothly pick up the initial battery cells from the picking mechanism 214.

[0188] The tidying mechanism 125 may adopt various types of existing tidying devices that can correct the position of the initial battery cells. For example, the tidying mechanism 125 includes a first tidying wheel and a second tidying wheel and a tidying driving member respectively arranged on both sides of the material picking mechanism 214. When the tidying driving member drives the first tidying wheel and the second tidying wheel toward the material picking mechanism 214, the first tidying wheel and the second tidying wheel tidy the initial battery cells located on the material picking mechanism 214 from both sides.

[0189] Optionally, the material taking mechanism 214 includes a material taking drive unit 2141 and a material taking piece 2142, wherein the material taking piece 2142 is connected to the driving end of the material taking drive unit 2141, and when the material taking drive unit 2141 drives the material taking piece 2142 to extend into the material basket 600, the initial battery cell located at the bottom of the material basket in the material basket 600 falls onto the material taking piece 2142 and is adsorbed by the material taking piece 2142. When the material taking drive unit 2141 drives the material taking piece 2142 to withdraw from the material basket 600, the initial battery cell is taken out of the material basket 600.

[0190] Optionally, the material taking drive unit 2141 is a cylinder, and the material taking sheet 2142 is connected to the telescopic rod of the cylinder. The cylinder controls the telescopic rod to extend and retract, thereby driving the material taking sheet 2142 to extend into the material basket 600 and withdraw from the material basket 600. Optionally, the material taking sheet 2142 is provided with adsorption holes, and the material taking sheet 2142 adsorbs the initial battery sheet through the adsorption holes.

[0191] like Fig. 9As shown, optionally, the transfer mechanism 22 includes a first driving module 221 and a first adsorption component 222 connected to the driving end of the first driving module 221, wherein the first driving module 221 is used to drive the first adsorption component 222 to translate and lift, 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.

[0192] In addition, the transfer mechanism 22 is also configured to implement angle adjustment of the initial battery cell or the replacement battery cell during the transfer process, thereby implementing the position correction of the initial battery cell or the replacement battery, so that the initial battery cell is transferred to the supporting platform in a correct posture, and finally 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 the replacement battery cell is transferred to the cache table 26 in a correct posture, and finally 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.

[0193] Continue to refer Fig. 9 As shown, optionally, the transfer mechanism 22 includes an X-axis driving module 2211, a Y-axis driving module 2212, a Z-axis driving module 2213 and a rotation driving module 2214, wherein the Y-axis driving module 2212 is connected to the driving end of the X-axis driving module 2211, the Z-axis driving module 2213 is connected to the driving end of the Y-axis driving module 2212, the rotation driving module 2214 is connected to the driving end of the Z-axis driving module 2213, and the first adsorption member 222 is connected to the driving end of the rotation driving module 2214. Through the coordinated driving of the X-axis driving module 2211, the Y-axis driving module 2212, the Z-axis driving module 2213 and the rotation driving module 2213, the transfer mechanism 22 realizes the translation and lifting drive of the first adsorption component 222, and realizes the rotation drive of the first adsorption component 222, so that the transfer mechanism 22 finally realizes the transfer of the initial battery cell or the replacement battery cell, and completes the position correction of the initial battery cell or the replacement battery cell during the transfer process.

[0194] like Figures 10 to 13 As shown, optionally, the second solder strip clamping mechanism 24 includes a second driving module 241, a first mounting bracket 242 and a clamping assembly 243, wherein: the first mounting bracket 242 is connected to the driving end of the second driving module 241, and the clamping assembly 243 is arranged on the first mounting bracket 242. The second driving module 241 is used to drive the clamping assembly 243 to move laterally to approach or move away from the carrier 23, and the clamping assembly 243 is used to clamp the end of the first side solder strip or the end of the second side solder strip on the initial battery sheet.

[0195] 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 solder strip or the end of the second side solder strip and the initial battery cell, thereby ensuring that the second solder strip shearing mechanism 25 can smoothly cut the end of the first side solder strip or the end of the second side solder strip.

[0196] 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, wherein: the pressure plate 2431 is fixedly arranged on the first mounting bracket 242, and the rotating shaft 2432 is installed on the first mounting bracket 242 and is located below the pressure plate 2431. A plurality of clamping jaws 2434 are sleeved on the rotating shaft 2432 and can rotate relative to the rotating shaft 2432. The clamping jaw driving member 2433 is arranged at the bottom of the first mounting bracket 242 and is transmission-connected with the first end of the clamping jaw 2434, and the second end of the clamping jaw 2434 is a clamping end. When the clamping jaw driving member 2433 drives the plurality of clamping jaws 2434 to rotate synchronously along the first clockwise direction (such as the counterclockwise direction), the clamping end of each clamping jaw 2434 clamps a corresponding welding strip on the pressure plate 2431. When the clamp driving member 2433 drives the plurality of clamps 2434 to rotate synchronously in the second clockwise direction (eg, clockwise direction), the clamping end of each clamp 2434 is separated from the pressure plate 2431 , thereby releasing the corresponding welding strip.

[0197] Of course, the clamping assembly 243 may also adopt other existing structures of a clamping mechanism that can clamp the ends of multiple welding strips.

[0198] like Fig.14 As shown, optionally, the second welding strip shearing mechanism 25 includes a third driving module (not shown in the figure), a second mounting bracket 251, a fixed cutter 252, a movable cutter 253 and a cutter driving member 254, wherein: the second mounting bracket 251 is connected to the driving end of the third driving module. The fixed cutter 252 is fixedly connected to the second mounting bracket 251, and a plurality of hook knives 255 are arranged side by side at intervals at the lower edge of the fixed cutter 252. A support inclined surface for supporting the welding strip is formed on the hook-shaped portion of the hook knife 255, and a fixed blade is formed on the upper end of the support inclined surface. The movable cutter 253 is slidably connected to the second mounting bracket 251 and is in contact with the fixed cutter 252, and a movable blade that cooperates with each fixed blade is formed at the lower edge of the movable cutter 253.

[0199] The driving end of the cutter driving member 254 is connected to the movable cutter 253, and the cutter driving member 254 is used to drive the movable cutter 253 to slide relative to the fixed cutter 252, so that the movable cutter 253 switches between the avoidance position and the shearing position. When the movable cutter 253 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 253 slides to the shearing position, the movable blade cooperates with each fixed blade to shear the welding strip passing through the gap.

[0200] Taking the shearing process of the first side welding strip on the initial battery cell as an example, the shearing process of the second welding strip shearing mechanism 25 is as follows:

[0201] In the initial state, the movable cutter 253 is at the avoidance position, and a gap is formed between the fixed blade of each hook knife 255 and the movable blade of the movable cutter 253 for the welding strip to pass through.

[0202] When it is necessary to cut the first side solder strip on the initial battery cell, the third driving module drives the second mounting bracket 251 to move so that each hook knife 255 extends between two adjacent solder strips in the first side solder strip. The third driving module drives the second mounting bracket 251 to descend so that each hook knife 255 passes through two adjacent solder strips downward.

[0203] Next, the third driving module drives the second mounting bracket 251 to translate, so that each hook knife 255 moves to below the corresponding soldering strip, so that the soldering strip is supported on the supporting inclined surface of the hook knife 255 .

[0204] 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.

[0205] The second welding strip cutting mechanism 25 of the above structure is particularly suitable for cutting flat welding strips, by extending the hook knife 255 under the welding strip and supporting the flat welding strip in an inclined state by using the supporting inclined surface of the hook knife 255. Then, the movable cutter 253 cuts the welding strip along the thickness direction of the flat welding strip, thereby ensuring that the flat welding strip remains in its original state after cutting, without distortion, and the cut surface is flat and free of burrs. Of course, the second welding strip cutting mechanism 25 is also suitable for cutting round welding strips.

[0206] 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.

[0207] Optionally, the first welding strip shearing mechanism 4 adopts the same structure as the second welding strip shearing mechanism 25 .

[0208] like Figures 3 to 5As shown, optionally, the replacement battery cell preparation mechanism 2 in the embodiment of the present application also includes a first detection mechanism 27. The transfer mechanism 22 is configured to pick up the initial battery cell from the feeding mechanism 21 and transfer the picked up initial battery cell 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 cell to obtain the position information of the initial battery cell and the quality information of the initial battery cell. The transfer mechanism 22 is also configured to transfer the initial battery cell from the first detection mechanism 27 to the carrier 23 or the cache table 26, and the transfer mechanism 22 is also configured to regularize the initial battery cell based on the position information of the initial battery cell during the transfer process.

[0209] When the first inspection mechanism 27 detects that the initial battery cell has no defects and the length of the solder strip thereon cannot meet the use requirements of the replacement battery cell, it means that the solder strip 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 strip cutting operation.

[0210] When the first inspection mechanism 27 detects that the initial battery cell has no defects and the length of the solder ribbon thereon 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.

[0211] 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.

[0212] 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.

[0213] Optionally, the first detection mechanism 27 includes at least one of a visual detection mechanism and an EL (Electroluminescent) detection mechanism. The visual detection mechanism can be in the form of a conventional CCD camera with a light source, and the initial battery cell is photographed and image analyzed to detect the position information and appearance information of the initial battery cell; and the EL detection mechanism can realize the detection of cold solder joints and internal defects of the initial battery cell.

[0214] Optionally, the replacement cell preparation mechanism 2 further includes a second detection mechanism 28, the buffer table 26 is disposed on a fourth drive module, and the fourth drive module is used to drive the buffer table 26 to translate the replacement cell to be detected to the second detection mechanism 28, and the second detection mechanism 28 is configured to perform at least one of position detection and defect detection on the replacement cell. The replacement cell feeding mechanism 3 picks up the replacement cell from the buffer table 26 after being detected by the second detection mechanism 28.

[0215] 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 then placed back on the buffer table 26 after the position is adjusted for subsequent repair.

[0216] 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 any further, 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.

[0217] Optionally, the second detection mechanism 28 may be a conventional visual detection mechanism, such as including a CCD camera and a light source.

[0218] like Figure 3 As shown, optionally, the cache station 26 includes a first cache station 261, a second cache station 262 and a third cache station 263 arranged side by side, wherein: the first cache station 261 is used to cache the head replacement battery cells transported by the transfer mechanism 22, 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 262 is used to cache the tail replacement battery cells transported by the transfer mechanism 22, 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 263 is used to cache the middle replacement battery cells transported 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.

[0219] 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.

[0220] 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 accordingly based on the received induction signals, thereby implementing supplementary preparation of replacement battery cells of the corresponding type, ensuring that the first cache station 261, the second cache station 262 and the third cache station 263 all have replacement battery cells of the corresponding type, so that the replacement battery cell feeding mechanism 3 can obtain the required type of replacement battery cells in a timely manner.

[0221] like Fig.15 As shown, optionally, the replacement cell feeding mechanism 3 includes a fifth driving module 31, a third mounting bracket 32 ​​and a second adsorbent 33, wherein: the third mounting bracket 32 ​​is connected to the driving end of the fifth driving module 31, and the second adsorbent 33 is arranged on the third mounting bracket 32. The fifth driving module 31 is used to drive the second adsorbent 33 to translate and lift, so as to drive the second adsorbent 33 to absorb the replacement cell from the replacement cell preparation mechanism 2, and to feed the replacement cell onto the rework platform 1.

[0222] like Fig.16 As shown, optionally, the rework platform 1 includes a mounting base 11, an intermediate soldering platform 12, a first side soldering platform 13 and a second side soldering platform 14, wherein: the intermediate soldering platform 12 can be mounted on the mounting base 11 in a vertically flippable manner, and the intermediate soldering platform 12 is used to carry and absorb defective battery cells and replacement battery cells in the battery string to be reworked.

[0223] The first side welding platform 13 is movably mounted on the mounting seat 11, and is used to carry the battery cell on the first side of the defective battery cell and at least absorb the adjacent battery cell on the first side. The first side welding platform 14 is configured to be able to translate toward or away from the middle welding platform 12 to achieve docking and separation with the middle welding platform 12, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform 12.

[0224] The second side welding platform 14 is movably mounted on the mounting base 11. The second side welding platform 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 welding platform 14 is configured to be able to translate toward or away from the middle welding platform 12 to achieve docking and separation with the middle welding platform 12, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform 12.

[0225] 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 surface.

[0226] 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.

[0227] 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.

[0228] 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, so that the defective battery cell that has been disassembled is removed from the middle soldering station 12.

[0229] It can be seen that by configuring the rework platform 1 , the rework platform 1 can cooperate with the first solder strip shearing mechanism 4 to automatically remove defective battery cells from the first type of battery strings to be reworked.

[0230] Optionally, the intermediate welding platform 12 is disposed on a flipping driving mechanism 15 , and the flipping driving mechanism 15 drives the intermediate welding platform 12 to flip vertically.

[0231] When the defective battery cell is removed from the first type of battery string to be repaired, the solder slag, battery cell slag and other impurities will fall on the intermediate soldering station. If not cleaned in time, it will affect the subsequent repair quality. In order to solve this problem, the repair platform 1 optionally also includes a cleaning mechanism arranged on the side of the intermediate soldering station 12. The cleaning mechanism is configured to perform operations such as blowing, wiping or suction on the intermediate soldering station 12 after the defective battery cell is removed from the intermediate soldering station 12 to remove impurities on the intermediate soldering station.

[0232] like Figures 17 to 22 As shown, optionally, the first welding ribbon clamping mechanism 5 includes a sixth driving module (not shown in the figure), 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 clamping mechanism 55 and a plurality of first chucks 56 and second chucks 57 arranged in pairs, wherein:

[0233] The fourth mounting bracket 51 is connected to the driving end of the sixth driving module, and the sixth driving module is used to drive the fourth mounting bracket 51 to move. 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.

[0234] The first clamps 56 are arranged side by side, and each first clamp 56 is connected to the first guide mounting seat 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 seat 54 via a second floating assembly 59 so as to float up and down, and can rotate relative to the second guide mounting seat 54 in a horizontal plane.

[0235] The elastic clamping mechanism 55 is mounted on the second guide mounting seat 54. The elastic clamping mechanism 55 includes a plurality of elastic clamping components 551 corresponding to the second clamps 57. The second guide mounting seat 54 is provided with reference blocks corresponding to each second clamp 57. The elastic clamping components 551 are used to elastically push the corresponding second clamp 57 to rotate in a horizontal plane to abut against the corresponding reference block, so that the clamping end of each second clamp 57 is aligned with the clamping end of the corresponding first clamp 56. The elastic clamping components 551 can also be elastically deformed when subjected to the reverse force of the corresponding second clamp 57.

[0236] The opening and closing driving mechanism 52 is used to drive the first guide mounting seat 53 and the second guide mounting seat 54 to move closer to the middle after the clamping end of the second clamp 57 is aligned with the clamping end of the corresponding first clamp 56, so that the clamping end of the second clamp 57 cooperates with the clamping end of the corresponding first clamp 56 to clamp the welding strip. The opening and closing driving 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 clamp 57 and the clamping end of the corresponding first clamp 56 release the welding strip.

[0237] The optional working process of the first welding strip clamping mechanism 5 is as follows:

[0238] In the initial state, each set of first clamps 56 and the corresponding second clamps 57 are in an open state (eg Fig. 22 ).

[0239] 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 first side welding strips 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.

[0240] Next, 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 in a floating manner via the first floating component 58, and the second clamp 57 is connected to the second guide mounting seat 54 in a floating manner via the second floating component 59, 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 are both in contact with the battery cell to realize alignment in the height direction.

[0241] At the same time, under the action of each elastic pressing assembly 551 , each second clamp 57 can automatically 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 .

[0242] Finally, the opening and closing drive mechanism 52 drives the first guide mounting seat 53 and the second guide mounting seat 54 to move toward 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.

[0243] 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 to contact the battery cell, thereby ensuring that the first clamp 56 and the second clamp 57 can be aligned in the height direction.

[0244] At the same time, by setting up the elastic clamping mechanism 55, the first welding strip clamping mechanism 5 can also adaptively adjust the angle of the clamping end of the second clamp 57 in the horizontal direction, so as to ensure that the clamping end of the second clamp 57 is aligned with the clamping end of the first clamp 56, and ensure that the two welding strips can smoothly climb tin to achieve overlap during the welding process, and finally ensure the quality of the lap welding.

[0245] When there are no foreign objects such as tin beads on the first welding strip 100 and the second welding strip 200 to be overlapped, after the first welding strip 100 and the second welding strip 200 are clamped by the clamping ends of the aligned first clamp 56 and the second clamp 57, the gap between the clamped first welding strip 100 and the second welding strip 200 can be reduced or eliminated, so that the first welding strip 100 and the second welding strip 200 can be smoothly tinned during the welding process, thereby improving the overlap quality.

[0246] In the case where there are foreign objects such as tin beads on the first welding strip 100 and the second welding strip 200 to be overlapped, after the first welding strip 100 and the second welding strip 200 are clamped by the clamping end of the aligned first clamp 56 and the clamping end of the second clamp 57, there will still be a large gap between the clamped first welding strip 100 and the second welding strip 200 due to the obstruction of the foreign objects, but due to the presence of the elastic clamping component 551, the foreign objects can force the second clamp 57 to rotate, causing the elastic clamping component 551 to elastically deform. After the foreign objects melt again during the welding process, under the action of the elastic clamping component 551, the second clamp 57 can be rotated back to the reference position again, thereby reducing or eliminating the gap between the first welding strip 100 and the second welding strip 200, so that the first welding strip 100 and the second welding strip 200 can smoothly climb tin during the welding process, thereby improving the overlap quality.

[0247] like Fig.17 and Fig.21 As shown, optionally, the first floating assembly 58 includes a first guide post, a first spring 581, a first chuck mounting seat 582 and a floating guide assembly 583, wherein: the upper and lower ends of the first guide post are respectively fixedly connected to the first guide mounting seat 53, the first chuck mounting seat 582 is slidably mounted on the first guide post, 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, and the clamping end of the first chuck 56 extends downward from the first chuck mounting seat 582. The floating guide assembly 583 is arranged between the first chuck mounting seat 582 and the first guide mounting seat 53, and is used to limit the first chuck mounting seat 582 to move vertically.

[0248] Since the first spring 581 is provided between the first clamp mounting seat 582 and the first guide mounting seat 53, when the sixth driving module drives the fourth mounting bracket 51 to descend, the first clamp 56 can realize adaptive adjustment of the relative position in the height direction after descending and contacting the battery sheet under the telescopic adjustment of the first spring 581. In this process, the floating guide assembly 583 implements the limiting guide of the first clamp mounting seat 582, so that the first clamp mounting seat 582 can only move vertically and cannot realize rotation on the horizontal plane, and finally ensures that when the second clamp 57 rotates to the first clamp 56, the clamping end of the second clamp 57 is aligned with the clamping end of the first clamp 56.

[0249] Optionally, the second floating assembly 59 includes a second guide post, a second spring and a second chuck mounting seat 591, wherein: 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 against the second guide mounting seat 54, and the lower end of the second spring abuts against the second chuck mounting seat 591. The second chuck 57 is mounted on the second chuck mounting seat 591, and the clamping end of the second chuck 57 extends downward from the second chuck mounting seat 591.

[0250] Since a second spring is provided between the second chuck 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 chuck 57 can realize adaptive adjustment of the relative position in the height direction after descending and contacting the battery cell, and the second chuck mounting seat 591 can also rotate around the second guide column after being subjected to force, thereby driving the second chuck 57 to realize rotation in the horizontal plane.

[0251] like Fig.17 , Fig.10 and Fig. 20 As shown, optionally, the elastic clamping assembly 551 includes a fixing frame 5511 and a compression spring 5512, wherein the fixing frame 5511 is arranged on the second guide mounting seat 54, the first end of the compression spring 5512 elastically abuts against the fixing frame 5511, and the second end of the compression spring 5512 elastically abuts against the second clamp mounting seat 591. The compression spring 5512 elastically pushes the second clamp mounting seat 591 to rotate in the horizontal plane, so as to drive the second clamp 57 to abut against the corresponding reference block. It can be seen that the elastic clamping assembly 551 does not need to be additionally provided with an elastic driving assembly, and the compression spring 5512 pushes the second clamp mounting seat 591 to rotate by its own elastic force, so that the second clamp 57 remains against the corresponding reference block.

[0252] like Fig. 22As shown, optionally, the bottom surface of the clamping end of the first clamp 56 includes a first bottom surface 561, a second bottom surface 562 and a first side elevation 563, wherein 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, wherein the third bottom surface 571 is lower than the fourth bottom surface 572, the second side elevation 573 is located between the third bottom surface 571 and the fourth bottom surface 572, and 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 approach or move away from each other with the relative movement of the first guide mounting seat 53 and the second guide mounting seat 54, so as to clamp or release the first welding strip 100 and the second welding strip 200 located in the clamping space. The first bottom surface 561 and the third bottom surface 571 are used to abut against the battery cell.

[0253] By performing the above-mentioned settings on the clamping ends of the first clamp 56 and 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, and then, 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.

[0254] Optionally, a vertical first through hole 564 is further provided on the clamping end of the first clamp 56, and a vertical second through hole 574 is further provided 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 strip 100 and the second welding strip 200, the first welding strip 100 and the second welding strip 200 are exposed from the first through hole 564 and the second through hole 574. Optionally, the first welding strip 100 is exposed from the first through hole 564, and the second welding strip 200 is exposed from the second through hole 574.

[0255] The first through hole 564 and the second through hole 574 can be used as ventilation holes. During welding, by blowing air toward the ventilation holes, the temperature of the welded solder strip can be cooled. The first through hole 564 and the second through hole 574 can also be used as light-transmitting holes. In this case, laser welding can be used to make the laser beam pass through the light-transmitting holes to irradiate the solder strip, thereby extending the heated length of the two solder strips, accelerating the melting of the solder on the solder strip, and ensuring the welding quality.

[0256] like Fig.16As shown, optionally, the battery string repair device in the embodiment of the present application 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 strip of the replacement battery cell and the welding strip 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 strip of the replacement battery cell and the welding strip to be overlapped on the second side adjacent battery cell.

[0257] 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 coats flux to the overlapping portion 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, thereby ensuring 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.

[0258] 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 portion 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, thereby ensuring 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.

[0259] 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.

[0260] like Figure 23 to Figure 25 As shown, optionally, the first coating mechanism 7 includes a coating drive assembly 71, a mounting plate 72 and a plurality of first coating pens 73, wherein: the coating drive assembly 71 is connected to the driving end of the sixth driving module, and the mounting plate 72 is connected to the driving end of the coating drive assembly 71. A 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 telescopically up and down via an elastic buffer 74, and each first coating pen 73 is used to apply solder 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 separates from the corresponding solder strip.

[0261] The first coating mechanism 7 uses the first coating pen 73 to implement the flux coating on the welding strip, which can realize the spot coating of the welding strip. Compared with the spraying method, the coating accuracy is higher and the flux usage is more saved. At the same time, each first coating pen 73 is connected to the bottom of the mounting plate 72 by an elastic buffer 74 so as to ensure that when the mounting plate 72 is lowered, each first coating pen 73 can contact the corresponding welding strip, thereby ensuring the flux coating effect on all welding strips.

[0262] like Fig.16 As shown, the battery string repair device also includes a first liquid replenishing mechanism 180 disposed on one side of the repair platform, and the first liquid replenishing mechanism 180 is used to replenish soldering flux to each first coating pen 73. The first liquid replenishing mechanism 180 can replenish soldering flux to the pen tip of the first coating pen 73 by spraying, soaking, etc.

[0263] like Fig.25 As shown, optionally, the elastic buffer 74 includes a mounting seat 742 and a spring 744, wherein the upper end of the mounting seat 742 can be slidably connected to the mounting plate 72, the coating pen 73 is fixedly mounted on the lower end of the mounting seat 742, 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 welding strip, the spring 744 is compressed and contracted, thereby implementing an adaptive adjustment of the height of the first coating pen 73, thereby ensuring that each first coating pen 73 can contact the corresponding welding strip.

[0264] Optionally, the upper end of the mounting seat 742 is further provided with a floating groove 743 extending in the vertical direction, and the elastic buffer 74 further includes a limiting screw 741 horizontally mounted on the mounting plate 72, and the top end of the limiting screw 741 is located in the floating groove 743. In this way, on the one hand, it is ensured that the upper end of the mounting seat 742 is limited in the mounting plate 72, and on the other hand, the floating stroke of the mounting seat 742 is equal to the length of the floating groove 743.

[0265] 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, and the laser welding mechanism is arranged above the rework platform 1. The laser welding mechanism implements rework welding in a non-contact manner, can achieve targeted welding of the overlapping parts, and the welding temperature is controllable, the thermal impact on the battery cell is small, and the welding quality is high.

[0266] As known to those skilled in the art, in addition to the first type of battery strings to be repaired that require replacement of cells mentioned above, common battery strings to be repaired also include a second type of battery strings to be repaired that require repair of cold welds. The welding mechanism 6 in the embodiment of the present application 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 strings to be repaired carried on the repair platform 1, so as to re-weld the cold welded welding strips on the battery cells.

[0267] 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 turn over 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.

[0268] Optionally, the laser welding mechanism also includes a temperature sensor coaxially arranged with the laser, and 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 according to the detected welding temperature, thereby ensuring that the welding temperature is always maintained within a predetermined range, thereby ensuring the welding quality.

[0269] like Fig.26 As shown, the battery string repair device 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 upper surface cold solder joint positions of the second type of battery string to be repaired carried on the repair platform 1. By providing the second coating mechanism 8, the flux coating of the cold solder joint positions 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.

[0270] Optionally, the second coating mechanism 8 includes a seventh driving module (not shown in the figure), a fifth mounting bracket 81 and a plurality of coating components 82, wherein: the fifth mounting bracket 81 is connected to the driving end of the seventh driving module. The plurality of coating components 82 are arranged side by side on the fifth mounting bracket 81, and each coating component 82 is capable of applying flux to a solder strip. The coating components 82 each include a driving unit 821 and a second coating pen 822, the driving unit 821 is connected to the fifth mounting bracket 81, the second coating pen 822 is connected to the driving end of the driving unit 821, and the driving unit 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 detaches from the corresponding solder strip.

[0271] The second coating mechanism 8 uses the second coating pen 822 to implement the flux coating on the welding strip, which can realize the spot coating of the welding strip. Compared with the spraying method, the coating accuracy is higher and the amount of flux used is more saved. Each second coating pen 822 is independently lifted and driven by its own driving unit 821, so that when each second coating pen 822 moves above the target welding strip, the second coating pen 822 corresponding to the welding 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 welding strips. In this way, accurate spot coating of the cold solder joint welding strip is realized, pollution to the area where other welding strips are located is avoided, and flux is further saved.

[0272] Optionally, the fifth mounting bracket 81 includes a mounting back plate 811, an adapter plate 812 and an adapter plate driving assembly 813, wherein the mounting back plate 811 is connected to the driving end of the seventh driving module, and the adapter plate 812 is slidably connected to the mounting back plate 811 and is drivingly connected to the adapter plate driving assembly 813 disposed on the mounting back plate 811. Several of the coating assemblies 82 are mounted side by side on the adapter plate 812, and the adapter plate driving assembly 813 is used to drive the adapter plate 812 to slide and translate on the mounting back plate 811, thereby ensuring that each coating assembly 82 is aligned with the corresponding welding strip.

[0273] like Fig.15 As shown, in order to reduce the equipment cost, in another optional implementation, the second coating mechanism 8 is not provided with a separate driving module (i.e., the seventh driving module), and is integrated on the driving module (i.e., the fifth driving module 31) of the replacement battery cell feeding mechanism 3, and the fifth driving module 31 drives the second coating mechanism 8 to translate and lift, so that the second coating mechanism 8 implements the flux coating of the soldering flux on the upper surface of the second type of battery string to be repaired. Of course, in addition to integrating the second coating mechanism 8 on the driving module (i.e., the fifth driving module 31) of the replacement battery cell feeding mechanism 3, the second coating mechanism 8 can also be integrated on the driving module (i.e., the sixth driving module) of the first solder strip clamping mechanism 5, and so on.

[0274] like Figure 4 and Figure 5 As shown, the battery string repair device also includes a second liquid replenishing mechanism 150 disposed on one side of the repair platform 1, and the second liquid replenishing mechanism 150 is used to replenish the soldering flux on each second coating pen 822. The second liquid replenishing mechanism 150 can replenish the soldering flux on the pen tip of the second coating pen 822 by spraying, soaking, etc.

[0275] like Figure 3 , Figure 4 and Figure 7As shown, optionally, the battery string repair device in the embodiment of the present application further includes a loading gripper 9 and a feeding detection mechanism 10. Among them, the feeding detection mechanism 10 is used to detect the defect type and defect position of the battery string to be repaired. The loading gripper 9 is used to pick up the battery string to be repaired from the feeding detection mechanism 10 and load the battery string to be repaired onto the repair platform 1.

[0276] By providing the feed detection mechanism 10, the defect type and defect position 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 position of the battery string to be repaired.

[0277] By providing the loading gripper 9 , it is possible to automatically load the battery string to be repaired after the inspection onto the repair platform 1 .

[0278] Optionally, the feeding detection mechanism 10 includes a feeding mechanism (not shown in the figure), a first gripper 101, a regularization table 102, a first string inspection mechanism (not shown in the figure), a second gripper 103, a feeding EL inspection mechanism 104, a second string inspection mechanism (not shown in the figure), a transfer table (not shown in the figure) and a discharge box 106, wherein: the feeding mechanism is used to supply battery strings. The first gripper 101 is used to transport the battery strings supplied by the feeding mechanism to the regularization table 102, and the regularization table 102 is used to regularize the battery strings. The first string inspection mechanism is arranged above the regularization 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 regularization table 102 to the top of the feeding EL inspection mechanism 104 and the second string inspection mechanism, wherein the feeding EL inspection mechanism 104 is used to perform EL inspection on the battery string, and the second string inspection mechanism is used to detect appearance defects on the lower surface of the battery string.

[0279] The second gripper 103 is also used to place the battery string to be repaired after testing on the transfer table, and place the battery string that cannot be repaired after testing into the discharge box 106. The loading gripper 9 picks up the battery string to be repaired from the transfer table.

[0280] By setting the feeding detection mechanism 10, the feeding detection mechanism 10 can detect the cold solder joints, internal defects and appearance defects of the battery string, 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 10 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.

[0281] Optionally, the first string inspection mechanism and the second string inspection mechanism respectively 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.

[0282] Optionally, the feeding EL detection mechanism 104 includes two oppositely disposed conductive voltage heads and an EL camera. The two oppositely disposed conductive voltage heads clamp the head welding strip and the tail welding strip of the battery string from both ends to implement power-on of the battery string, and the EL camera is used to obtain an infrared image of the battery string in the power-on state to implement EL detection of the battery string.

[0283] 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, and the third coating mechanism 110 is used to coat flux on the lower surface of the cold solder joint position of the second type of battery string to be repaired on the loading gripper 9.

[0284] By providing 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 repair quality of the cold solder joint on the lower surface of the second type of battery string to be repaired.

[0285] Optionally, the third coating mechanism 110 may adopt a structure similar to the first coating mechanism 7 or the second coating mechanism 8, that is, a coating pen is used to coat the solder flux to the cold solder joint position on the lower surface of the second type of battery string to be repaired. The coating pen of the third coating mechanism 110 may also be configured to be vertically flippable, so that the pen tip is turned upward when coating, and the pen tip is turned downward when not coating, so as to ensure that the solder flux in the pen can wet the pen tip.

[0286] Optionally, the battery string repair device further includes a third liquid replenishing mechanism disposed on one side of the third coating mechanism 110, and the third liquid replenishing mechanism is used to replenish solder flux on the coating pen of the third coating mechanism 110. The third liquid replenishing mechanism can replenish solder flux on the pen tip of the coating pen of the third coating mechanism 110 by spraying, immersing, etc.

[0287] like Fig.16 As shown, optionally, the battery string repair device in the embodiment of the present application also 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.

[0288] In order to save equipment costs, Fig.16In the implementation shown, the clamping mechanism 120 is integratedly mounted on the driving module of the first solder strip shearing mechanism 4 to drive the clamping mechanism 120 to translate and elevate, and to compress the solder strips with cold solder joints in the second type of battery string to be repaired onto the corresponding battery cells. Of course, the clamping mechanism 120 can also be independently mounted on its own driving module, and its own driving module drives its translation and elevation.

[0289] like Figure 3 As shown, optionally, the battery string repair device in the embodiment of the present application 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 is qualified for repair, a battery string that is unqualified for repair and cannot be repaired for a second time, and a battery string that is unqualified for repair and can be repaired for a second time.

[0290] The unloading gripper 130 is also used to send the qualified reworked batteries in series to the receiving mechanism, send the unqualified reworked batteries that cannot be reworked a second time in series to the NG material box 160, send the unqualified reworked batteries that can be reworked a second time in series to the cache material box 170, and send the unqualified reworked batteries in the cache material box 170 that can be reworked a second time to the rework platform 1.

[0291] It can be seen that by setting the unloading gripper 130, the discharging EL detection mechanism 140, the receiving mechanism, the NG material box 160 and the buffer material box 170, the detection of the repaired battery string is realized to determine the type of the repaired battery string. In addition, the classified collection of three different types of repaired battery strings is also realized. In particular, the battery strings that are unqualified and can be repaired for a second time are sent back to the repair platform for a second repair.

[0292] Optionally, the discharge EL detection mechanism 140 includes two oppositely disposed conductive voltage heads and an EL camera. The two oppositely disposed conductive voltage heads clamp the head solder strip and the tail solder strip of the repaired battery string from both ends to implement power-on of the repaired battery string, and the EL camera is used to obtain an infrared image of the repaired battery string in the power-on state to implement EL detection of the repaired battery string to detect whether the repaired battery string has cold solder joints and internal defects, and finally determine the type of the repaired battery string.

[0293] The present application is described in sufficient detail above with certain particularity. It should be understood by those skilled in the art that the description in the embodiments is merely exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, rather than by the above description in the embodiments.

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 feeding mechanism, a first welding strip shearing mechanism, a first welding strip clamping mechanism and a welding mechanism, wherein: The repair platform is used to carry a battery string to be repaired, and the battery string to be repaired includes at least a first type of battery string to be repaired for which cells need to be replaced; The first solder strip cutting mechanism is disposed on one side of the repair platform, and is used to cut the solder strip between the defective battery cell to be replaced and the adjacent battery cell in the first type of battery string to be repaired, wherein the adjacent battery cell includes at least one of the first side adjacent battery cell and the second side adjacent battery cell; The replacement cell preparation mechanism is used to process the initial cell into a replacement cell, wherein the upper surface of the initial cell is connected to a first side welding strip 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 strip extending outwardly from a second side of the initial cell, and the replacement cell preparation mechanism is configured to cut at least one of the first side welding strip and the second side welding strip to obtain the replacement cell, and 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 to the defective position in the first type of cell string to be repaired on the repair platform, wherein the defective position is the position vacated after the defective cell is removed from the first type of cell string to be repaired; The first solder strip clamping mechanism is disposed 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 is used 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 sheet preparation mechanism includes a feeding mechanism, a transfer mechanism, a carrying platform, a second welding ribbon clamping mechanism, a second welding ribbon shearing mechanism and a buffering platform, wherein: The feeding mechanism is used to supply the initial battery sheet; The transfer mechanism is used to pick up the initial battery sheet from the feeding mechanism and transfer the initial battery sheet to the carrying platform; The supporting platform is used for adsorbing and fixing the initial battery sheet; The second solder strip clamping mechanism is located at one side of the carrier, and is used to clamp the end of the solder strip on one side of the initial battery cell close to the second solder strip clamping mechanism; the second solder strip shearing mechanism is used to shear the end of the solder strip on the clamped initial battery cell to obtain a replacement battery cell; The transfer mechanism is also used to transfer the replacement battery sheet to the cache table; The replacement battery cell loading mechanism is used to pick up the replacement battery cell from the cache table.

3. The battery string repair device according to claim 2, characterized in that: The second solder strip cutting mechanism is further used to cut the end of the solder strip on the initial battery cell which is away from the second solder strip clamping mechanism.

4. The battery string repair device according to claim 2, characterized in that: 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 the basket filled with initial battery cells to the docking conveying mechanism or receive the empty basket output by the docking conveying mechanism; The lifting mechanism is further configured to drive the docking conveying mechanism to rise to the film taking station, so that the initial battery cell at the bottom of the material basket is higher than the material taking mechanism; the material taking mechanism is configured to extend into the material basket, and the lifting mechanism is further configured to drive the docking conveying mechanism to descend, so that the initial battery cell at the bottom of the material basket falls onto the material taking mechanism, and the material taking mechanism is further configured to take the initial battery cell out of the material 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 at the side of the taking mechanism, and the tidying mechanism is used for correcting 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 sheet, wherein the material picking sheet is connected to the driving end of the material picking drive unit, and 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.

7. The battery string repair device according to claim 2, characterized in that: The transfer mechanism includes a first driving module and a first adsorption component connected to the driving end of the first driving module, wherein the first adsorption component is used to adsorb the initial battery cell or the replacement battery cell, and the first driving 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, characterized in that: The second welding ribbon clamping mechanism comprises 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 sheet; The second driving module is further 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.

9. The battery string repair device according to claim 2, characterized in that: The second welding strip shearing mechanism comprises 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 at intervals at the lower edge of the fixed cutter, and a supporting 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 supporting inclined surface; The movable cutter is slidably connected to the second mounting bracket and is in contact with the fixed cutter, and a movable blade that cooperates with each of the fixed blades 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 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 cooperates with each fixed blade to shear the welding strip passing therebetween.

10. The battery string repair device according to claim 2, characterized in that: The replacement battery cell preparation mechanism also 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 transfer mechanism is further configured to transfer the initial battery cells from the first detection mechanism to the carrier platform or the cache platform, and the transfer mechanism is further configured to organize the initial battery cells based on position information of the initial battery cells during the transfer process.

11. The battery string repair device according to claim 10, characterized in that: 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, characterized in that: The replacement cell preparation mechanism further includes a second detection mechanism, the cache table is disposed on a fourth drive module, the fourth drive module is used to drive the cache table to translate the replacement cell to be detected to the second detection mechanism, and 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 detected by the second detection mechanism from the buffer table.

13. The battery string repair device according to claim 2, characterized in that: 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 cell transferred by the transfer mechanism, and the head replacement battery cell is used to replace the defective battery cell located at the head of the battery string to be repaired; The second buffer station is used to buffer the tail replacement battery cell transferred by the transfer mechanism, and the tail replacement battery cell is used to replace the defective battery cell located at the tail of the battery string to be repaired; The third buffer station is used to buffer the middle replacement battery cell 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, characterized in that: The replacement battery cell feeding mechanism includes a fifth driving 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 arranged 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, characterized in that: 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 welding platform can be mounted on the mounting seat in a vertically flippable manner, and the intermediate welding platform 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 welding platform is movably mounted on the mounting seat, the first side welding platform is used to carry the battery cell on the first side of the defective battery cell and can at least absorb the adjacent battery cell on the first side, the first side welding platform is configured to be able to translate toward or away from the middle welding platform to achieve docking and separation with the middle welding platform, and is configured to be able to rise and fall in the vertical direction to achieve alignment and misalignment with the middle welding platform; The second side soldering station is movably mounted on the mounting base, and is used to support the battery cell on the second side of the defective battery cell and at least be able to 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, characterized in that: The rework platform also includes a cleaning mechanism arranged on the side of the middle soldering station; The cleaning mechanism is configured to clean impurities on the intermediate welding platform after the defective battery cell is removed from the intermediate welding platform.

17. The battery string repair device according to claim 1, characterized in that: The first welding strip clamping mechanism comprises 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 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 driving 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 driving 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 can rotate relative to the second guide mounting seat in a horizontal plane; The elastic clamping mechanism is installed on the second guide mounting seat, and the elastic clamping mechanism includes a plurality of elastic clamping components corresponding to the second clamps one by one. The second guide mounting seat is provided with reference blocks corresponding to each second clamp, and the elastic clamping components are used to elastically push the corresponding second clamps to rotate in a horizontal plane to abut against the corresponding reference blocks, so that the clamping ends of each second clamp are aligned with the clamping ends of the corresponding first clamps; the elastic clamping components can also be elastically deformed when subjected to a reverse force from the corresponding second clamps; The opening and closing drive mechanism is used to drive the first guide mounting seat and the second guide mounting seat to move toward 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, characterized in that: 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 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, characterized in that: 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 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, characterized in that: The elastic pressing assembly comprises 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, characterized in that: The battery string rework device also includes a first coating mechanism, which is configured to be movable to the rework platform and is used to coat 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 is used to coat 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, characterized in that: The first coating mechanism includes a coating drive assembly and a plurality of first coating pens, wherein: A plurality of the first coating pens are arranged side by side at the driving end of the coating driving assembly, and each of the first coating pens is connected to the driving end of the coating driving 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 solder flux to a portion to be overlapped; The coating drive assembly is used to drive the first coating pens to translate and lift, so that each first coating pen contacts or separates from the corresponding welding strip; The battery string rework device further includes a first liquid replenishing mechanism disposed on one side of the rework platform, and the first liquid replenishing mechanism is used to replenish soldering flux to each of the first coating pens.

23. The battery string repair device according to claim 1, characterized in that: 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, characterized in that: The battery string to be repaired also includes a second type of battery string to be repaired that needs to have its defective solder joints repaired; The welding mechanism is also used to weld the cold-weld position 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 welding ribbon on the battery cell.

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

26. The battery string repair device according to claim 25, characterized in that: 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 a welding strip; The coating components each include a driving unit and a second coating pen, the driving unit is connected to the fifth mounting bracket, the second coating pen is connected to the driving end of the driving unit, and the driving unit is at least used to drive the second coating pen to rise and fall so that the second coating pen contacts or separates from the corresponding welding strip.

27. The battery string repair device according to claim 24, characterized in that: 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 to the repair platform.

28. The battery string repair device according to claim 27, characterized in that: The feeding detection mechanism includes a feeding mechanism, a first gripper, a tidying 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 tidying table and is used to inspect appearance defects on the upper surface of the battery string; The second gripper is used to carry the battery string from the tidying table to above the feeding EL detection mechanism and the second string detection mechanism, wherein the feeding EL detection mechanism is used to perform EL detection on the battery string, and the second string detection mechanism is used to detect appearance defects on the lower surface of the battery string; The second gripper is also used to place the battery string to be repaired after testing on the transfer table, and to place the battery string 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, characterized in that: 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 cold solder joint positions 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, characterized in that: The battery string repair device also includes a clamping mechanism, which is arranged 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, characterized in that: 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 unloading 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 are qualified for repair, battery strings that are unqualified for repair and cannot be repaired a second time, and battery strings that are unqualified for repair and can be repaired a second time; The unloading gripper is also used to deliver the qualified reworked battery strings to the receiving mechanism, deliver the unqualified reworked battery strings that cannot be reworked a second time to the NG material box, deliver the unqualified reworked battery strings that can be reworked a second time to the cache material box, and deliver the unqualified reworked battery strings that can be reworked a second time in the cache material box to the rework platform.

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