Single solar cell soldering device

Abstract

Provided in the present application is a single solar cell soldering device, comprising: a solar cell supply mechanism, a solder strip laying mechanism, a first handling mechanism, a solder bearing mechanism, a soldering mechanism and a second handling mechanism, wherein the solder strip laying mechanism lays a first solder strip set onto the solder bearing mechanism; the first handling mechanism stacks a solar cell onto the first solder strip set; the solder strip laying mechanism stacks a second solder strip set onto the solar cell; the solder bearing mechanism conveys the first solder strip set, the solar cell and the second solder strip set to a soldering station and a solar cell unloading station in sequence; the soldering mechanism solders the first solder strip set and the second solder strip set to the solar cell when the solder bearing mechanism moves into the soldering station; the second handling mechanism removes the solar cell when the solder bearing mechanism moves into the solar cell unloading station; and the solder bearing mechanism returns to a loading station after the solar cell is removed. The present application allows for automatic soldering of the solder strip sets to the front and back of the single solar cell, thereby obtaining the replaced solar cell.

Description

A single-cell welding device for a battery cell Technical Field

[0001] The present application relates to the field of photovoltaic cell string production, and specifically to a single cell welding device. Background Art

[0002] When a battery string contains defective cells, the battery string can be repaired. Taking the battery string in Figure 12 as an example, the connecting ribbon between the defective cell 300 and its adjacent cell 400 is cut. The position where the ribbon is cut is the "×" position in Figure 12. The defective cell 300 is then removed from the battery string. A replacement cell 500 with a ribbon assembly is then placed in the position vacated by the defective cell 300. The ribbon assembly on the replacement cell 500 is then overlap-welded with the ribbon assembly on the adjacent cell 400.

[0003] Before a battery string is officially repaired, replacement cells need to be prepared in advance, that is, welding ribbon groups to the front and back sides of a single cell. However, current battery welding equipment is all string welding equipment for welding battery strings, that is, welding multiple cells into a string through multiple ribbon groups. This type of string welding equipment is difficult to implement welding of single cells. Therefore, currently, replacement cells are generally obtained by manually welding ribbon groups to the cells, or by manually cutting a single cell from the battery string to use as a replacement cell. The above-mentioned replacement cell preparation methods are inefficient and difficult to meet the needs of batch repair of battery strings. Summary of the Invention

[0004] To address the technical problem that traditional string welding equipment is difficult to implement welding of replacement battery cells, this application provides a single-cell battery welding device, the detailed technical solution of which is as follows:

[0005] A single-cell battery cell welding device includes a battery cell supply mechanism, a welding ribbon placement mechanism, a first transport mechanism, a welding support mechanism, a welding mechanism, and a second transport mechanism, wherein:

[0006] The solder ribbon placement mechanism is configured to place the first solder ribbon group on the welding carrier mechanism located at the loading station; the first transport mechanism is configured to pick up the battery cells from the battery cell supply mechanism and stack the picked up battery cells on the first solder ribbon group; the solder ribbon placement mechanism is further configured to stack the second solder ribbon group on the battery cells;

[0007] The welding carrying mechanism is configured to sequentially transport the stacked first welding ribbon group, battery cells, and second welding ribbon group to the welding station and the battery cell unloading station;

[0008] The welding mechanism is arranged at the welding station, and is configured to weld the first welding ribbon group and the second welding ribbon group located on the welding carrier mechanism to the battery cell when the welding carrier mechanism moves to the welding station;

[0009] The second transport mechanism is provided at the cell unloading station, and is configured to remove the cell after the welding ribbon welding is completed from the welding carrier mechanism when the welding carrier mechanism moves to the cell unloading station;

[0010] The welding support mechanism is further configured to return from the battery cell unloading station to the loading station after the battery cell is removed.

[0011] The single-cell welding device of the present application can automatically weld the welding ribbon group to the front and back of the single-cell cell, thereby obtaining a replacement cell and realizing the continuous production of the replacement cell. The present application improves the welding efficiency of the replacement cell.

[0012] In some embodiments, the first conveying mechanism stacks the picked-up battery cells onto the first welding ribbon group, so that the first end of the first welding ribbon group extends outward toward the first side of the battery cell, and the second end of the first welding ribbon group is located below the battery cell; the welding ribbon laying mechanism stacks the second welding ribbon group onto the battery cell, so that the first end of the second welding ribbon group is located above the battery cell, and the second end of the second welding ribbon group extends outward toward the second side of the battery cell.

[0013] Ensure that the ends of the first and second soldering ribbons, which are soldered to both sides of the cell, extend outward from the first and second sides of the cell, respectively. This ensures that the soldered cells can meet the supply requirements for the three types of replacement cells.

[0014] In some embodiments, the battery cell supply mechanism includes a conveying mechanism, a transfer mechanism and a positioning mechanism, wherein: the conveying mechanism is configured to convey the material box containing the battery cells toward the positioning mechanism; the transfer mechanism is located between the conveying mechanism and the positioning mechanism, and the transfer mechanism is configured to pick up the battery cells from the material box and transfer the picked up battery cells to the positioning mechanism; the positioning mechanism is configured to position the battery cells to obtain the position information of the battery cells; the first transporting mechanism is configured to pick up the positioned battery cells from the positioning mechanism, and stack the picked up battery cells on the first welding ribbon group according to the position information of the battery cells.

[0015] Through the cooperation of the conveying mechanism, the transfer mechanism and the positioning mechanism, the battery cell supply mechanism realizes the automatic feeding of battery cells to be welded with solder strips, and realizes the positioning of the battery cells, thereby ensuring that the first transport mechanism can accurately stack the battery cells on the first solder strip group according to the battery cell position information obtained from the battery cell supply mechanism.

[0016] In some embodiments, an adsorption structure is provided on the supporting surface of the welding supporting mechanism, and the adsorption structure is used to adsorb the battery cells stacked on the first welding ribbon group; the first conveying mechanism is also configured to press the tooling onto the second welding ribbon group at the loading station to press the second welding ribbon group onto the battery cells.

[0017] By arranging an adsorption structure on the bearing surface of the welding support mechanism, the battery cells stacked on the first welding ribbon group are adsorbed, thereby ensuring that the first welding ribbon group can be tightly attached to the lower surface of the battery cell, avoiding the first welding ribbon group and the battery cell being misaligned during the movement of the welding support mechanism; and by pressing the tooling onto the second welding ribbon group, it is ensured that the second welding ribbon group can be pressed tightly against the upper surface of the battery cell, avoiding the second welding ribbon group and the battery cell being misaligned during the movement of the welding support mechanism.

[0018] In some embodiments, the battery cell single-cell welding device further includes a third transport mechanism; a tool unloading station is further provided on the moving path of the welding carrier mechanism, between the welding station and the battery cell unloading station;

[0019] The third transport mechanism is arranged at the tooling unloading station, and the third transport mechanism is configured to pick up the tooling from the welding carrying mechanism when the welding carrying mechanism moves from the welding station to the tooling unloading station; the third transport mechanism is also configured to put the tooling back onto the welding carrying mechanism when the welding carrying mechanism moves from the battery cell unloading station to the tooling unloading station.

[0020] After completing the welding of the battery cell ribbons, the third transport mechanism automatically removes the tooling from the battery cell. When the welding support mechanism returns from the battery cell unloading station to the loading station, the third transport mechanism puts the tooling back onto the welding support mechanism, so that the welding support mechanism can bring the tooling back to the loading station, thereby realizing the recycling of the tooling.

[0021] In some embodiments, the first transport mechanism includes a driving part, a first picking part and a second picking part, wherein: the first picking part and the second picking part are both installed at the driving end of the driving part; the driving part is used to drive the first picking part to pick up the battery cells from the battery cell supply mechanism, and stack the picked up battery cells on the first welding ribbon group; the driving part is also used to drive the second picking part to pick up the tooling from the welding carrier mechanism returned to the loading station, and to drive the second picking part to press the picked up tooling onto the second welding ribbon group.

[0022] By installing the first picking part and the second picking part together at the driving end of the driving part, the picking and placement of the battery cells and the picking and placement of the tooling are all driven by one driving part, which has a compact structure and reduces the equipment manufacturing cost.

[0023] In some embodiments, the single-cell welding device also includes a tooling cache table, and the first transport mechanism includes a driving part, a first picking part and a second picking part, wherein: the first picking part and the second picking part are both installed on the driving end of the driving part; the driving part is used to drive the first picking part to pick up the cell from the cell supply mechanism, and stack the picked cell on the first welding ribbon group; the driving part is also used to drive the second picking part to pick up the tooling from the tooling cache table, and press the picked up tooling onto the second welding ribbon group; the driving part is also used to drive the second picking part to pick up the tooling from the welding carrier mechanism returned to the loading station, and place the tooling on the tooling cache table.

[0024] By installing the first picking part and the second picking part together at the driving end of the driving part, the picking and placement of the battery cells and the picking and placement of the tooling are all driven by one driving part, which has a compact structure and reduces the equipment manufacturing cost; and by setting up a tooling cache table, the tooling is cached, and there is no need for the second picking part to hold the tooling all the time.

[0025] In some embodiments, a heating element is provided in the tooling cache table, and the heating element is used to preheat the tooling cached on the tooling cache table.

[0026] After the preheated tooling is pressed onto the second welding ribbon group, the second welding ribbon group and the battery cell can be heated, thereby shortening the welding time of the welding mechanism and improving welding efficiency.

[0027] In some embodiments, the weld ribbon laying mechanism includes a weld ribbon unloading mechanism, a weld ribbon pulling mechanism, a flux coating mechanism, a weld ribbon pressing mechanism and a weld ribbon cutting mechanism, wherein: the weld ribbon unloading mechanism is configured to provide multiple weld ribbons; the weld ribbon pulling mechanism is configured to clamp the end of the weld ribbon and pull the weld ribbon so that the weld ribbon passes through the flux coating mechanism, the weld ribbon pressing mechanism and the weld ribbon cutting mechanism in sequence; the flux coating mechanism is configured to apply flux to the weld ribbon; the weld ribbon pressing mechanism is configured to press the weld ribbon, and the weld ribbon cutting mechanism is configured to cut the pressed weld ribbon to obtain a first weld ribbon group or a second weld ribbon group; the weld ribbon pulling mechanism is also used to lay the first weld ribbon group onto the welding carrier mechanism, or stack the second weld ribbon group onto the battery cell.

[0028] Through the cooperation of the solder ribbon feeding mechanism, the solder ribbon pulling mechanism, the flux coating mechanism, the solder ribbon pressing mechanism and the solder ribbon cutting mechanism, the solder ribbon laying mechanism realizes the automatic preparation of the first solder ribbon group and the second solder ribbon group, and realizes the automatic laying of the first solder ribbon group and the second solder ribbon group.

[0029] In some embodiments, the cross-section of the welding ribbon is circular, and the welding ribbon laying mechanism also includes a welding ribbon flattening mechanism, which is located between the welding ribbon clamping mechanism and the welding ribbon cutting mechanism. The welding ribbon flattening mechanism is used to extrude a welding ribbon segment with a predetermined length on the welding ribbon into a flat welding ribbon segment before the welding ribbon cutting mechanism cuts the welding ribbon.

[0030] To reduce the fragmentation rate of battery strings during the subsequent lamination process, the solder ribbon segments between adjacent cells in a battery string are often pre-flattened into flat ribbon segments. The solder ribbons on defective cells removed from such battery strings may contain flat ribbon segments, so the solder ribbons on replacement cells used to replace the defective cells also need to be flattened. By providing a solder ribbon flattening mechanism, the solder ribbon segments of a predetermined length on the circular solder ribbons are flattened, ensuring that the first or second solder ribbon groups on the prepared replacement cells have flat ribbon segments, meeting rework requirements.

[0031] In some embodiments, the welding supporting mechanism includes a first translation mechanism and a welding supporting platform, wherein the welding supporting platform is installed on the movable part of the first translation mechanism, and the welding supporting platform is provided with adsorption holes for adsorbing battery cells. The first welding ribbon group, battery cells and second welding ribbon group are carried on the welding supporting platform, and the first translation mechanism is used to drive the welding supporting platform to translate back and forth in the horizontal direction.

[0032] A welding carrying mechanism with a simple structure is provided, which realizes the carrying and conveying of the first welding ribbon group, the battery cell and the second welding ribbon group, so that the stacked first welding ribbon group, the battery cell and the second welding ribbon group are conveyed to the welding station and the battery cell unloading station in sequence.

[0033] In some embodiments, the battery cell single-piece welding device further includes a detection mechanism and a battery cell receiving mechanism;

[0034] The second conveying mechanism is also configured to transfer the battery cells removed from the welding supporting mechanism to the testing mechanism; the testing mechanism is configured to perform quality inspection on the battery cells; the second conveying mechanism is also configured to convey the battery cells that pass the inspection to the battery cell receiving mechanism, and to convey the battery cells that fail the inspection to the NG cell recovery mechanism.

[0035] By setting up a detection mechanism and a battery cell receiving mechanism, the battery cells that have completed the welding of the solder ribbons can be inspected, ensuring that the battery cells received by the battery cell receiving mechanism are all battery cells with qualified welding quality. The battery cell receiving mechanism can collect battery cells with qualified welding and supply them to multiple battery string repair machines in the downstream process.

[0036] In some embodiments, the detection mechanism includes an EL detection unit and an appearance detection unit, wherein the EL detection unit is used to perform EL detection on the battery cell, and the appearance detection unit is used to perform appearance detection on the battery cell.

[0037] By setting up the detection mechanism, the detection mechanism can detect the cold solder joints, internal defects and appearance defects of the battery cells that have completed the welding of the welding ribbons.

[0038] In some embodiments, the battery cell receiving mechanism includes a receiving conveying mechanism, a lifting mechanism, a docking conveying mechanism and a material basket conveying mechanism, wherein: the receiving conveying mechanism is used to receive and convey the battery cells that have passed the inspection and are transported by the second transport mechanism; the material basket conveying mechanism is arranged below the receiving conveying mechanism; the lifting mechanism is arranged between the receiving conveying mechanism and the material basket conveying 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 used to transport the empty material basket to the docking conveying mechanism or receive the full material basket full of battery cells output by the docking conveying mechanism; the lifting mechanism is also configured to drive the docking conveying mechanism to rise to the cell receiving station, the receiving conveying mechanism extends into the empty material basket located on the docking conveying mechanism and transports the battery cells into the empty material basket, and the lifting mechanism is also configured to drive the docking conveying mechanism to rise or fall so that the battery cells transported by the receiving conveying mechanism are inserted into the empty material basket in sequence.

[0039] Through the cooperation of the material receiving and conveying mechanism, the lifting mechanism, the docking conveying mechanism and the material basket conveying mechanism, the battery cell receiving mechanism can automatically stack the battery cells that have passed the inspection and are transported by the second conveying mechanism into the material basket in sequence, and the battery cell receiving mechanism can automatically realize the basket changing operation to improve the material receiving efficiency.

[0040] In some embodiments, the basket conveying mechanism includes an upper basket conveying part and a lower basket conveying part arranged side by side at the same height; the battery cell receiving mechanism also includes a second translation mechanism, and the lifting mechanism is connected to the movable part of the second translation mechanism; the second translation mechanism is used to drive the docking conveying mechanism located at the basket changing station to translate, so that the docking conveying mechanism docks with the upper basket conveying part or the lower basket conveying part; the upper basket conveying part is used to convey the empty basket to the docking conveying mechanism; the lower basket conveying part is used to receive the full basket full of battery cells output by the docking conveying mechanism.

[0041] Through the cooperation of the upper basket conveying part and the lower basket conveying part, after the basket conveying mechanism receives the basket full of battery cells from the docking conveying mechanism, it can immediately convey an empty basket to the docking conveying mechanism for transportation, thereby improving the basket changing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] FIG1 is a schematic structural diagram of a single-cell welding device according to an embodiment of the present application at a first viewing angle;

[0043] FIG2 is a partial enlarged view of the area A in FIG1 ;

[0044] FIG3 is a schematic structural diagram of a single-cell welding device according to an embodiment of the present application from a second viewing angle;

[0045] FIG4 is a partial enlarged view of area B in FIG3 ;

[0046] FIG5 is a schematic structural diagram of the single-cell welding device according to an embodiment of the present application from a third viewing angle;

[0047] FIG6 is a partial enlarged view of the C area in FIG5 ;

[0048] FIG7 is a schematic structural diagram of a single-cell welding device according to an embodiment of the present application at a fourth viewing angle;

[0049] FIG8 is a partial enlarged view of the D area in FIG7;

[0050] FIG9 is a schematic structural diagram of a battery cell receiving mechanism in an embodiment of the present application;

[0051] FIG10 is a schematic structural diagram of a first transport mechanism in one embodiment of the present application;

[0052] FIG11 is a schematic structural diagram of a first transport mechanism in another embodiment of the present application;

[0053] FIG12 is a schematic diagram of the battery string repair process;

[0054] Figures 1 to 12 include:

[0055] Battery supply mechanism 1:

[0056] Conveying mechanism 11;

[0057] Transfer agency 12;

[0058] Positioning mechanism 13: positioning platform 131, positioning camera 132;

[0059] Welding tape laying mechanism 2:

[0060] Welding strip unloading mechanism 21;

[0061] Welding strip traction mechanism 22;

[0062] flux coating mechanism 23;

[0063] Welding strip pressing mechanism 24;

[0064] Welding strip cutting mechanism 25;

[0065] First transport mechanism 3:

[0066] Driving unit 31;

[0067] a first pickup portion 32;

[0068] a second picking portion 33;

[0069] Welding support mechanism 4:

[0070] Welding carrier 41;

[0071] a first translation mechanism 42;

[0072] Welding mechanism 5;

[0073] Second transport mechanism 6;

[0074] The third transport mechanism 7;

[0075] Tooling cache station 8;

[0076] Testing agency 9;

[0077] Battery cell receiving mechanism 10:

[0078] Material receiving and conveying mechanism 101;

[0079] Lifting mechanism 102;

[0080] Docking conveying mechanism 103;

[0081] Basket conveying mechanism 104: upper basket conveying part 1041, lower basket conveying part 1042;

[0082] Second translation mechanism 105;

[0083] Basket 100 , defective battery cell 300 , adjacent battery cell 400 , and replacement battery cell 500 . DETAILED DESCRIPTION

[0084] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0085] As shown in Figures 1 to 8, the single-cell battery cell welding device in the embodiment of the present application includes a battery cell supply mechanism 1, a welding ribbon placement mechanism 2, a first transport mechanism 3, a welding support mechanism 4, a welding mechanism 5, and a second transport mechanism 6, wherein:

[0086] The ribbon placement mechanism 2 is configured to place the first ribbon assembly onto the welding support mechanism 4 located at the loading station. The first transport mechanism 3 is configured to pick up cells from the cell supply mechanism 1 and stack them onto the first ribbon assembly. The ribbon placement mechanism 2 is also configured to stack the second ribbon assembly onto the cells.

[0087] The welding carrying mechanism 4 is configured to transport the stacked first welding ribbon group, battery cells and second welding ribbon group to the welding station and the battery cell unloading station in sequence.

[0088] The welding mechanism 5 is arranged at the welding station. The welding mechanism 4 is configured to weld the first welding ribbon group and the second welding ribbon group on the welding carrier mechanism to the battery cell when the welding carrier mechanism moves to the welding station.

[0089] The second transport mechanism 6 is provided at the cell unloading station and is configured to remove the cell after the welding ribbon welding is completed from the welding carrier mechanism 4 when the welding carrier mechanism 4 moves to the cell unloading station.

[0090] The welding support mechanism 4 is further configured to return from the cell unloading station to the loading station after the cell is removed.

[0091] The first and second welding ribbon groups each include a plurality of welding ribbons extending along a first horizontal direction, and the plurality of welding ribbons are spaced apart along a second horizontal direction perpendicular to the first horizontal direction. Typically, the first and second welding ribbon groups have the same number of welding ribbons, with the number of welding ribbons in the first welding ribbon group equal to the number of welding ribbons connected to the bottom surface of the defective battery cells in the battery string to be repaired, and the number of welding ribbons in the second welding ribbon group equal to the number of welding ribbons connected to the top surface of the defective battery cells in the battery string to be repaired.

[0092] The soldering strip is a copper strip with a coating, wherein the coating may be a tin coating layer, a SnBiAg (tin-bismuth-silver) alloy layer, or other metal layers or alloy layers.

[0093] The working process of the battery cell single-piece welding device in the embodiment of the present application is as follows:

[0094] First, the welding support mechanism 4 moves to the loading station.

[0095] The ribbon placement mechanism 2 places the first ribbon assembly onto the welding support mechanism 4. Subsequently, the first transport mechanism 3 picks up cells from the cell supply mechanism 1 and places them onto the first ribbon assembly. Subsequently, the ribbon placement mechanism 2 places the second ribbon assembly onto the cells.

[0096] Next, the welding support mechanism 4 transports the stacked first welding ribbon group, the battery cell, and the second welding ribbon group to the welding station. The welding mechanism 4 welds the first welding ribbon group and the second welding ribbon group to the battery cell.

[0097] Next, the welding carrier mechanism 4 transports the battery cells that have completed the welding of the welding ribbon to the battery cell unloading station. The second transport mechanism 6 removes the battery cells that have completed the welding of the welding ribbon from the welding carrier mechanism 4.

[0098] Finally, the emptied welding support mechanism 4 returns to the loading station again, ready to receive the next first welding ribbon group, battery cell and second welding ribbon group.

[0099] The single-cell welding device provided in the embodiment of the present application can automatically weld the welding ribbon group to the front and back of the single-cell cell, thereby obtaining a replacement cell and realizing the continuous production of the replacement cell, thereby improving the welding efficiency of the replacement cell.

[0100] According to the position of the defective cell to be replaced in the battery string to be repaired (the head, middle or end of the string), the corresponding replacement cell is divided into head replacement cell, middle replacement cell and tail replacement cell. The soldering ribbon group on the three types of replacement cell may need to extend out of the cell, or may not need to extend out of the cell, and the length of the extended cell may not be the same. In order to meet the feeding requirements of the three types of replacement cell, the replacement cell prepared by the single-cell welding device for the cell in the embodiment of the present application has the soldering ribbon groups on the upper and lower surfaces extending out of the cell with a uniform length. When the later stage implements the formal replacement repair, the soldering ribbon group on the replacement cell prepared by the device can be cut as needed.

[0101] Optionally, the first handling mechanism 3 stacks the picked-up cell onto the first solder ribbon assembly, such that the first end of the first solder ribbon assembly extends outward from the first side of the cell, while the second end of the first solder ribbon assembly is positioned below and does not extend beyond the cell. The solder ribbon placement mechanism 2 stacks the second solder ribbon assembly onto the cell, such that the first end of the second solder ribbon assembly is positioned above and does not extend beyond the cell, while the second end of the second solder ribbon assembly extends outward from the second side of the cell. This ensures that one end of the first solder ribbon assembly and the second solder ribbon assembly, welded to both sides of the cell, extend outward from the first and second sides of the cell, respectively. When the cell is subsequently supplied as a replacement cell to a subsequent repair machine, at least one of the first and second solder ribbon assembly can be sheared according to the specific type of replacement cell required, thereby cutting the cell into the desired head, middle, or tail replacement cell.

[0102] Of course, it is also possible to directly control the solder ribbon laying mechanism in the single-cell welding device of the present application to stack the first solder ribbon group and the second solder ribbon group that meet the above-mentioned length requirements on the upper and lower surfaces of the cell according to the length requirements of the first solder ribbon group and the second solder ribbon group in the head replacement cell, the middle replacement cell or the tail replacement cell, thereby preparing the head replacement cell, the middle replacement cell or the tail replacement cell that can be directly supplied to the repair machine.

[0103] As shown in Figures 1 to 4, the battery cell supply mechanism 1 optionally includes a conveying mechanism 11, a transfer mechanism 12, and a positioning mechanism 13. The conveying mechanism 11 is configured to convey a magazine containing battery cells toward the positioning mechanism 13. The transfer mechanism 12 is located between the conveying mechanism 11 and the positioning mechanism 13. The transfer mechanism 12 is configured to pick up battery cells from the magazine and transfer the picked-up battery cells to the positioning mechanism 13. The positioning mechanism 13 is configured to position the battery cells to obtain their position information.

[0104] The first transport mechanism 3 is configured to pick up the positioned battery cells from the positioning mechanism 13, and stack the picked battery cells onto the first soldering ribbon group according to the position information of the battery cells, thereby achieving accurate stacking of the battery cells and ultimately ensuring the position accuracy of each soldering ribbon in the first soldering ribbon group relative to the battery cells.

[0105] The conveying mechanism 11 can be, for example, a belt conveying mechanism, a roller conveying mechanism, or any other existing linear conveying mechanism. The transfer mechanism 12 can be, for example, a suction cup assembly driven by a robotic arm.

[0106] As shown in Figure 4, optionally, the positioning mechanism 13 includes a positioning platform 131 and a positioning camera 132 arranged above the positioning platform 131, wherein the positioning platform 131 is used to carry the battery cells transported by the transport mechanism 12; the positioning camera 132 is used to implement photographic positioning of the battery cells located on the positioning platform 131.

[0107] Optionally, the positioning camera 132 is connected to the PLC controller. After the positioning camera 132 takes a picture of the battery cell on the positioning platform 131, the image of the battery cell is sent to the PLC controller. The PLC controller performs image analysis (such as grayscale value analysis) on the image to implement positioning of the battery cell.

[0108] Optionally, an adsorption structure, such as an adsorption hole, is provided on the supporting surface of the welding support mechanism 3. The adsorption structure is used to adsorb the battery cells stacked on the first welding ribbon assembly, thereby ensuring that the first welding ribbon assembly is closely attached to the lower surface of the battery cells and preventing the first welding ribbon assembly from deviating from the battery cells when the welding support mechanism 3 moves.

[0109] In addition, after the solder tape laying mechanism 2 stacks the second solder tape group onto the battery cell at the loading station, the first conveying mechanism 3 is also configured to press the tooling onto the second solder tape group, thereby ensuring that the second solder tape group can be pressed tightly against the upper surface of the battery cell, preventing the second solder tape group from deviating from the battery cell when the welding supporting mechanism 3 moves.

[0110] As shown in FIG1 , the single-cell battery cell welding apparatus in the embodiment of the present application optionally further includes a third transport mechanism 7. A tooling unloading station is also provided on the moving path of the welding carrier mechanism 4, located between the welding station and the battery cell unloading station. The third transport mechanism 7 is provided at the tooling unloading station. The welding carrier mechanism 4 will pass through the tooling unloading station when transporting the battery cells that have completed ribbon welding to the battery cell unloading station. When the tooling unloading station is reached, the third transport mechanism 7 picks up the tooling from the welding carrier mechanism 4.

[0111] When the welding support mechanism 4 with the battery cell removed returns from the battery cell unloading station to the loading station, when passing the tooling unloading station, the third transport mechanism 7 puts the picked up tooling back onto the welding support mechanism 4, and the welding support mechanism 4 brings the tooling back to the loading station for next use.

[0112] As shown in Figure 10, in some optional embodiments, the first transport mechanism 3 includes a drive unit 31, a first pickup unit 32, and a second pickup unit 33, wherein the first pickup unit 32 and the second pickup unit 33 are both mounted on the drive end of the drive unit 31. The drive unit 31 is used to drive the first pickup unit 32 to pick up cells from the cell supply mechanism 1 and stack the picked cells onto the first solder ribbon assembly. The drive unit 31 is also used to drive the second pickup unit 33 to pick up tooling from the welding carrier 4 returning to the loading station and to drive the second pickup unit 33 to press the picked tooling onto the second solder ribbon assembly.

[0113] In the embodiment of Figure 10, after the second pick-up unit 33 picks up the tooling from the welding carrier mechanism 4 that has returned to the loading station, the tooling remains on the second pick-up unit 33. After the first pick-up unit 32 and the ribbon placement mechanism 2 complete the stacking of the first ribbon group, the cell, and the second ribbon group, the second pick-up unit 33 places the tooling back onto the welding carrier mechanism 4 to press the second ribbon group onto the cell.

[0114] In order to prevent the tooling on the second picking portion 33 from interfering with the first picking portion 32 , as shown in FIG10 , the second picking portion 33 and the first picking portion 32 are arranged side by side with an interval.

[0115] In other optional embodiments, as shown in Figures 1, 2, and 4, the single-cell welding apparatus further includes a tooling cache 8 for caching tooling. In these embodiments, the drive unit 31 is configured to drive the second pickup unit 33 to pick up a tooling from the tooling cache 8 and place it onto the second welding ribbon assembly. The drive unit 31 is also configured to drive the second pickup unit 33 to pick up a tooling from the welding carrier 4 that has returned to the loading station and place the tooling onto the tooling cache 8.

[0116] That is, in these embodiments, after the second pick-up unit 33 picks up the tooling from the welding carrier mechanism 4 that has returned to the loading station, it caches the tooling on the tooling cache table 8. After the first pick-up unit 32 and the ribbon placement mechanism 2 complete the stacking of the first ribbon group, the cell, and the second ribbon group, the second pick-up unit 33 picks up the tooling from the tooling cache table 8 and places it on the welding carrier mechanism 4 to press the second ribbon group onto the cell.

[0117] Because the tooling picked up by the second pickup unit 33 is cached on the tooling cache station 8, when the first pickup unit 32 is laying out the battery cells, there is no tooling on the second pickup unit 33, and there is no problem of the tooling on the second pickup unit 33 interfering with the first pickup unit 32. In order to reduce the installation space of the first pickup unit 32 and the second pickup unit 33, as shown in Figure 11, the second pickup unit 33 optionally includes two suction parts arranged side by side and spaced apart for sucking the two ends of the tooling, and the first pickup unit 32 is arranged between the two suction parts of the second pickup unit 33.

[0118] Optionally, the first pickup portion 32 includes a plurality of suction cups, which use the suction force of the suction cups to pick up the battery cells; the second pickup portion 33 includes a plurality of magnets, which use the magnets to adsorb the frame of the tooling to pick up the tooling.

[0119] Optionally, a heater is provided in the tooling buffer 8 for preheating the tooling buffered on the tooling buffer 8. After the preheated tooling is pressed onto the second ribbon assembly, the second ribbon assembly and the cell can be heated, thereby shortening the welding time of the welding mechanism 5 and improving welding efficiency.

[0120] As shown in Figures 1 to 6, the ribbon placement mechanism 2 optionally includes a ribbon unloading mechanism 21, a ribbon pulling mechanism 22, a flux coating mechanism 23, a ribbon pressing mechanism 24, and a ribbon cutting mechanism 25. The ribbon unloading mechanism 21 is configured to unload multiple ribbons. The ribbon pulling mechanism 22 is configured to clamp the ends of the multiple ribbons unloaded by the ribbon unloading mechanism 21 and pull the ribbons so that they pass sequentially through the flux coating mechanism 23, the ribbon pressing mechanism 24, and the ribbon cutting mechanism 25. The flux coating mechanism 23 is configured to apply flux to the multiple ribbons. The ribbon pressing mechanism 24 is configured to compress the multiple ribbons, and the ribbon cutting mechanism 25 is configured to cut the compressed multiple ribbons to obtain a first ribbon group or a second ribbon group. The ribbon pulling mechanism 22 is also used to lay the first ribbon group onto the welding support mechanism 4 or to stack the second ribbon group onto the solar cell.

[0121] It can be seen that through the cooperation of the solder tape discharge mechanism 21, the solder tape traction mechanism 22, the flux coating mechanism 23, the solder tape clamping mechanism 24 and the solder tape cutting mechanism 25, the solder tape laying mechanism 2 realizes the automatic preparation of the first solder tape group and the second solder tape group, and realizes the automatic laying of the first solder tape group and the second solder tape group.

[0122] In some repair applications, in order to reduce the fragmentation rate of the battery string in the subsequent lamination process, the solder ribbon segments between adjacent battery cells in the battery string to be repaired are flat solder ribbon segments. The solder ribbons on the defective battery cells cut off in such battery strings may have flat solder ribbon segments, so the solder ribbons on the replacement battery cells used to replace the defective battery cells also need to be flattened.

[0123] Therefore, optionally, when the weld ribbon released by the weld ribbon discharge mechanism 21 is a circular weld ribbon with a circular cross-section, the weld ribbon laying mechanism 2 also includes a weld ribbon flattening mechanism, which is located between the weld ribbon clamping mechanism 24 and the weld ribbon cutting mechanism 25. The weld ribbon flattening mechanism is used to extrude a weld ribbon segment with a predetermined length on the weld ribbon into a flat weld ribbon segment before the weld ribbon cutting mechanism 25 cuts the weld ribbon.

[0124] As shown in Figures 4 and 6, the welding support mechanism 4 optionally includes a first translation mechanism 42 and a welding support platform 41, wherein the welding support platform 41 is mounted on the movable component of the first translation mechanism 42. The welding support platform 41 is provided with adsorption holes for adsorbing the battery cells. The first welding ribbon group, the battery cells, and the second welding ribbon group are stacked on the welding support platform 41. The first translation mechanism 42 is used to drive the welding support platform 41 to move back and forth horizontally between the loading station and the battery cell unloading station.

[0125] Optionally, the first translation mechanism may adopt various types of linear modules, such as a linear module composed of a motor, a lead screw, and a lead screw nut, etc., as long as reciprocating translation between different workstations can be achieved.

[0126] As shown in Figure 1, the battery cell single-cell welding device in the embodiment of the present application optionally further includes a detection mechanism 9 and a battery cell receiving mechanism 10. After the second transport mechanism 6 removes the battery cell adhesive from the welding support mechanism 4, it first transfers the battery cell to the detection mechanism 9, which performs a quality inspection on the battery cell. The second transport mechanism 6 then transports the battery cell that has passed the inspection to the battery cell receiving mechanism 10, and transports the battery cell that has failed the inspection to the NG cell recovery mechanism.

[0127] By providing the detection mechanism 9, it is possible to detect the battery cells that have completed the welding of the welding ribbon, thereby ensuring that the battery cells received by the battery cell receiving mechanism are all battery cells with qualified welding quality, and ultimately ensuring that the replacement battery cells supplied to the subsequent rework machine are qualified replacement battery cells. Since the battery cell receiving mechanism is provided to collect the welded replacement battery cells, the battery cell single-cell welding device of the embodiment of the present application can realize that one device supplies replacement battery cells to multiple rework machines, and can work independently without being restricted by the rework cycle of the rework machine, thereby improving the production efficiency of replacement battery cells.

[0128] Optionally, the inspection mechanism 9 includes an EL inspection unit and an appearance inspection unit, wherein the EL inspection unit is used to perform EL inspection on the battery cell, and the appearance inspection unit is used to perform appearance inspection on the battery cell. This configuration enables the inspection mechanism 9 to detect cold solder joints, internal defects, and appearance defects on battery cells that have completed soldering with solder ribbons.

[0129] Optionally, the EL inspection unit includes an EL power-on assembly and an infrared camera. The EL power-on assembly energizes the cell via the first and second solder ribbon groups. The infrared camera captures an infrared image of the cell in the energized state. Image analysis of the infrared image allows detection of cold solder joints and internal defects in the cell. The appearance inspection unit can be a visible light imaging camera of various types. It takes an image of the cell in the unenergized state to obtain an image of the cell's appearance. Image analysis of the cell's appearance image allows detection of the cell's appearance. Optionally, the infrared camera and visible light imaging camera transmit the captured infrared and appearance images of the cell, respectively, to a PLC. The PLC executes the stored image recognition algorithm to detect cold solder joints, internal defects, and appearance of the cell.

[0130] As shown in FIG1 and FIG7 to FIG9 , optionally, the battery cell receiving mechanism 10 includes a receiving conveying mechanism 101 , a lifting mechanism 102 , a docking conveying mechanism 103 and a basket conveying mechanism 104 , wherein:

[0131] The receiving and conveying mechanism 101 is used to receive and convey the battery cells that have passed the inspection and are conveyed by the second conveying mechanism 6 . The basket conveying mechanism 104 is disposed below the receiving and conveying mechanism 101 .

[0132] The lifting mechanism 102 is arranged between the material receiving and conveying mechanism 101 and the material basket conveying mechanism 104 , and the docking and conveying mechanism 103 is connected to the movable part of the lifting mechanism 102 .

[0133] The lifting mechanism 102 is configured to drive the docking conveying mechanism 103 to descend to the basket changing station so that the docking conveying mechanism 103 docks with the basket conveying mechanism 104 .

[0134] The basket conveying mechanism 104 is used to convey the empty basket 100 to the docking conveying mechanism 103 or to receive a full basket filled with battery cells output by the docking conveying mechanism 103 .

[0135] The lifting mechanism 102 is also configured to drive the docking conveying mechanism 103 to rise to the film receiving station, and the material receiving conveying mechanism 101 extends into the empty material basket 100 located on the docking conveying mechanism 103 and conveys the battery cells into the empty material basket 100. The lifting mechanism 102 is also configured to drive the docking conveying mechanism 103 to rise or fall, so that the battery cells conveyed by the material receiving conveying mechanism 101 are inserted into the empty material basket 100 in sequence.

[0136] Optionally, the material basket 100 includes a bottom plate and a first side plate and a second side plate arranged opposite to the bottom plate. Horizontal slots are arranged one by one in the vertical direction on the relative inner walls of the first side plate and the second side plate, and each pair of horizontal slots can accommodate a battery cell.

[0137] The optional working process of the battery cell receiving mechanism 10 in the embodiment of the present application is as follows:

[0138] First, the lifting mechanism 102 drives the docking conveying mechanism 103 to descend to the basket changing station and dock with the basket conveying mechanism 104. The basket conveying mechanism 104 conveys an empty basket 100 to the docking conveying mechanism 103.

[0139] Next, the lifting mechanism 102 drives the docking conveying mechanism 103 to rise to the film receiving station. The discharge end of the material receiving conveying mechanism 101 extends into the top space of the empty material basket 100 on the docking conveying mechanism 103.

[0140] The receiving and conveying mechanism 101 inputs the battery cells into the material basket 100 one by one. Specifically, each time a battery cell is inserted into a pair of horizontal slots in the material basket 100, the lifting mechanism 102 drives the docking conveying mechanism 103 to descend to a predetermined height (such as the distance between two adjacent pairs of horizontal slots), so that the discharge end of the receiving and conveying mechanism 101 is aligned with the next pair of horizontal slots in the material basket 100, and finally ensures that the battery cells conveyed by the receiving and conveying mechanism 101 can be inserted into the material basket 100 in sequence until battery cells are inserted into all horizontal slots in the material basket 100.

[0141] When the basket 100 is full of battery cells, the discharging end of the receiving conveyor mechanism 101 withdraws the basket 100 to perform a lifting and avoiding operation. The lifting mechanism 102 drives the docking conveyor mechanism 103 down to the basket replacement station, so that the docking conveyor mechanism 103 docks with the basket conveyor mechanism 104 again.

[0142] Next, the docking conveying mechanism 103 conveys the full basket filled with battery cells to the basket conveying mechanism 104 , and receives an empty basket from the basket conveying mechanism 104 .

[0143] It can be seen that through the cooperation of the material receiving and conveying mechanism 101, the lifting mechanism 102, the docking conveying mechanism 103 and the material basket conveying mechanism 104, the battery cell receiving mechanism 10 can automatically stack the battery cells that have passed the inspection and are transported by the second conveying mechanism 6 into the material basket, and can automatically complete the basket changing operation, which greatly improves the battery cell receiving efficiency.

[0144] Optionally, the receiving conveyor mechanism 101 is a telescopic conveyor mechanism, comprising a fixed conveyor section and a movable conveyor section slidably connected to the fixed conveyor section. The movable conveyor section is driven by a telescopic drive member mounted on the fixed conveyor section. When the lifting mechanism 102 drives the docking conveyor mechanism 103 to rise to the wafer receiving station, the telescopic drive member drives the end of the movable conveyor section (i.e., the discharge end of the receiving conveyor mechanism 101) to slide toward the wafer receiving station, thereby inserting the movable conveyor section into the empty basket. When the basket is full of battery cells, the telescopic drive member drives the movable conveyor section to slide away from the wafer receiving station, thereby withdrawing the movable conveyor section from the basket.

[0145] Optionally, the basket conveying mechanism 104 includes an upper basket conveying section 1041 and a lower basket conveying section 1042, arranged side by side at the same height. The cell receiving mechanism 104 also includes a second translation mechanism 105, with the lifting mechanism 102 connected to the movable component of the second translation mechanism 105. The second translation mechanism 105 is used to drive the docking conveying mechanism 103 located at the basket changing station to translate, so that the docking conveying mechanism 103 docks with the upper basket conveying section 1041 or the lower basket conveying section 1042. When the docking conveying mechanism 103 docks with the upper basket conveying section 1041, the upper basket conveying section 1041 conveys an empty basket to the docking conveying mechanism 103. When the docking conveying mechanism 103 docks with the unloading conveying section 1042, the docking conveying mechanism 103 conveys a full basket filled with cell cells to the lower basket conveying section 1042, which then transports the full basket to the subsequent basket unloading station.

[0146] For example, when the docking conveyor mechanism 103 carrying a basket full of battery cells descends to the basket exchange station, the second translation mechanism 105 drives the docking conveyor mechanism 103 to translate, docking the docking conveyor mechanism 103 with the unloading conveyor portion 1042, thereby allowing the docking conveyor mechanism 103 to convey the basket full of battery cells to the lower basket conveyor portion 1042. Next, the second translation mechanism 105 drives the docking conveyor mechanism 103 to translate, docking the docking conveyor mechanism 103 with the upper basket conveyor portion 1041, thereby allowing the docking conveyor mechanism 103 to receive an empty basket from the upper basket conveyor portion 1041.

[0147] It can be seen that through the cooperation of the upper basket conveying part 1041 and the lower basket conveying part 1042, the basket conveying mechanism 104 can immediately convey an empty basket to the docking conveying mechanism 103 after receiving the basket full of battery cells from the docking conveying mechanism 103, thereby improving the basket changing efficiency.

[0148] The present application has been described above in sufficient detail with certain specificity. Those skilled in the art will understand that the descriptions in the examples are merely illustrative, and that all modifications made without departing from the true spirit and scope of the present application are intended to be within the scope of protection of the present application. The scope of protection claimed in the present application is defined by the claims, not by the description in the examples.

Claims

1. A battery cell single-piece welding device, characterized in that: The battery cell single-piece welding device comprises a battery cell supply mechanism, a welding strip laying mechanism, a first conveying mechanism, a welding bearing mechanism, a welding mechanism, and a second conveying mechanism, wherein: The welding tape laying mechanism is configured to lay the first welding tape group on the welding carrying mechanism located at the loading station; the first transport mechanism is configured to pick up the battery cell from the battery cell supply mechanism and stack the picked-up battery cell on the first welding tape group; the welding tape laying mechanism is also configured to stack the second welding tape group on the battery cell; The welding carrying mechanism is configured to sequentially transport the stacked first welding ribbon group, the battery cell and the second welding ribbon group to the welding station and the battery cell unloading station; The welding mechanism is disposed at the welding station, and the welding mechanism is configured to weld the first welding ribbon group and the second welding ribbon group located on the welding carrier mechanism to the battery cell when the welding carrier mechanism moves to the welding station; The second transport mechanism is disposed at the battery cell unloading station, and the second transport mechanism is configured to take the battery cell that has completed the welding of the welding ribbon away from the welding carrier mechanism when the welding carrier mechanism moves to the battery cell unloading station; The welding support mechanism is also configured to return from the battery cell unloading station to the loading station after the battery cell is removed.

2. The battery cell single-piece welding device according to claim 1, characterized in that: The first transport mechanism stacks the picked-up battery cell onto the first welding ribbon group, so that the first end of the first welding ribbon group extends outward toward the first side of the battery cell, and the second end of the first welding ribbon group is located below the battery cell; The solder ribbon laying mechanism stacks the second solder ribbon group on the battery cell so that the first end of the second solder ribbon group is located above the battery cell and the second end of the second solder ribbon group extends outward toward the second side of the battery cell.

3. The battery cell single-piece welding device according to claim 1, characterized in that: The battery cell supply mechanism includes a conveying mechanism, a transfer mechanism and a positioning mechanism, wherein: The conveying mechanism is configured to convey the material box containing the battery cells toward the positioning mechanism; The transfer mechanism is located between the conveying mechanism and the positioning mechanism, and the transfer mechanism is configured to pick up the battery cells from the material box and transfer the picked-up battery cells to the positioning mechanism; The positioning mechanism is configured to position the battery cell to obtain position information of the battery cell; The first transport mechanism is configured to pick up the positioned battery cells from the positioning mechanism, and stack the picked-up battery cells on the first welding ribbon group according to the position information of the battery cells.

4. The battery cell single-piece welding device according to claim 1, characterized in that: An adsorption structure is provided on the bearing surface of the welding bearing mechanism, and the adsorption structure is used to adsorb the battery cells stacked on the first welding ribbon group; The first transport mechanism is further configured to press and place a tool onto the second welding ribbon group at the loading station to press the second welding ribbon group onto the battery cell.

5. The battery cell single-piece welding device according to claim 4, characterized in that: The battery cell single-piece welding device also includes a third transport mechanism; A tool unloading station is also provided on the moving path of the welding carrying mechanism, between the welding station and the battery cell unloading station; The third conveying mechanism is arranged at the tool unloading station, and the third conveying mechanism is configured to pick up the tool from the welding carrying mechanism when the welding carrying mechanism moves from the welding station to the tool unloading station; the third conveying mechanism is also configured to put the tool back on the welding carrying mechanism when the welding carrying mechanism moves from the battery cell unloading station to the tool unloading station.

6. The battery cell single-piece welding device according to claim 5, characterized in that: The first transport mechanism comprises a driving part, a first picking part and a second picking part, wherein: The first pickup portion and the second pickup portion are both mounted on a driving end of the driving portion; The driving unit is used to drive the first picking unit to pick up the battery cell from the battery cell supply mechanism, and stack the picked up battery cell on the first welding ribbon group; The driving part is also used to drive the second picking part to pick up the tooling from the welding carrying mechanism returned to the loading station, and to drive the second picking part to press the picked up tooling onto the second welding ribbon group.

7. The battery cell single-piece welding device according to claim 5, characterized in that: The battery cell single-piece welding device further includes a tooling buffer station, and the first transport mechanism includes a driving unit, a first picking unit, and a second picking unit, wherein: The first pickup portion and the second pickup portion are both mounted on a driving end of the driving portion; The driving unit is used to drive the first picking unit to pick up the battery cell from the battery cell supply mechanism, and stack the picked up battery cell on the first welding ribbon group; The driving unit is also used to drive the second picking unit to pick up the tooling from the tooling cache table, and press the picked up tooling onto the second welding ribbon group; the driving unit is also used to drive the second picking unit to pick up the tooling from the welding carrying mechanism returned to the loading station, and place the tooling onto the tooling cache table.

8. The battery cell single-piece welding device according to claim 7, characterized in that: A heating element is provided in the tooling cache table, and the heating element is used to preheat the tools cached on the tooling cache table.

9. The battery cell single-piece welding device according to claim 1, characterized in that: The solder strip laying mechanism includes a solder strip feeding mechanism, a solder strip pulling mechanism, a solder flux coating mechanism, a solder strip pressing mechanism and a solder strip cutting mechanism, wherein: The solder strip unloading mechanism is configured to provide a plurality of solder strips; The solder strip pulling mechanism is configured to clamp the end of the solder strip and pull the solder strip so that the solder strip passes through the flux coating mechanism, the solder strip pressing mechanism and the solder strip cutting mechanism in sequence; The soldering flux coating mechanism is configured to coat soldering flux onto the soldering ribbon; The welding strip pressing mechanism is configured to press the welding strip, and the welding strip cutting mechanism is configured to cut the pressed welding strip to obtain the first welding strip group or the second welding strip group; The welding ribbon pulling mechanism is also used to lay the first welding ribbon group on the welding supporting mechanism, or to stack the second welding ribbon group on the battery cell.

10. The battery cell single-piece welding device according to claim 9, characterized in that: The cross-section of the welding ribbon is circular, and the welding ribbon laying mechanism also includes a welding ribbon flattening mechanism, which is located between the welding ribbon clamping mechanism and the welding ribbon cutting mechanism. The welding ribbon flattening mechanism is used to extrude a welding ribbon segment with a predetermined length on the welding ribbon into a flat welding ribbon segment before the welding ribbon cutting mechanism cuts the welding ribbon.

11. The battery cell single-piece welding device according to claim 1, characterized in that: The welding supporting mechanism includes a first translation mechanism and a welding supporting platform, wherein the welding supporting platform is installed on the movable part of the first translation mechanism, the welding supporting platform is provided with adsorption holes for adsorbing battery cells, the first welding ribbon group, the battery cells and the second welding ribbon group are carried on the welding supporting platform, and the first translation mechanism is used to drive the welding supporting platform to reciprocate in the horizontal direction.

12. The battery cell single-piece welding device according to claim 1, characterized in that: The battery cell single-piece welding device also includes a detection mechanism and a battery cell receiving mechanism; The second transport mechanism is further configured to transport the battery cell taken from the welding carrier mechanism to the detection mechanism; The detection mechanism is configured to perform quality detection on the battery cell; The second transport mechanism is also configured to transport the battery cells that have passed the inspection to the battery cell receiving mechanism, and to transport the battery cells that have not passed the inspection to the NG cell recovery mechanism.

13. The battery cell single-piece welding device according to claim 12, characterized in that: The detection mechanism includes an EL detection unit and an appearance detection unit, wherein the EL detection unit is used to perform EL detection on the battery cell, and the appearance detection unit is used to perform appearance detection on the battery cell.

14. The battery cell single-piece welding device according to claim 12, characterized in that: The battery cell receiving mechanism includes a receiving conveying mechanism, a lifting mechanism, a docking conveying mechanism and a basket conveying mechanism, wherein: The receiving and conveying mechanism is used to receive and convey the battery cells that have passed the inspection and are conveyed by the second conveying mechanism; The material basket conveying mechanism is arranged below the material receiving conveying mechanism; The lifting mechanism is arranged between the material receiving conveying mechanism and the material basket conveying 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 used to convey an empty basket to the docking conveying mechanism or to receive a full basket full of battery cells output by the docking conveying mechanism; The lifting mechanism is also configured to drive the docking conveying mechanism to rise to the film receiving station, the material receiving conveying mechanism extends into the empty material basket located on the docking conveying mechanism and conveys the battery cells into the empty material basket, and the lifting mechanism is also configured to drive the docking conveying mechanism to rise or fall, so that the battery cells conveyed by the material receiving conveying mechanism are inserted into the empty material basket one by one.

15. The battery cell single-piece welding device according to claim 14, characterized in that: The basket conveying mechanism comprises an upper basket conveying part and a lower basket conveying part which are arranged side by side at the same height; The battery sheet receiving mechanism further comprises a second translation mechanism, and the lifting mechanism is connected to a movable component of the second translation mechanism; The second translation mechanism is used to drive the docking conveying mechanism located at the basket changing station to translate, so that the docking conveying mechanism docks with the upper basket conveying part or the lower basket conveying part; The basket conveying part is used to convey the empty basket to the docking conveying mechanism; The lower basket conveying portion is used to receive the full basket filled with battery cells output by the docking conveying mechanism.

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