Single battery piece welding device

Abstract

The invention provides a single battery piece welding device which comprises a battery piece supply mechanism, a welding strip laying mechanism, a first carrying mechanism, a welding bearing mechanism, a welding mechanism and a second carrying mechanism, and the welding strip laying mechanism is used for laying a first welding strip group on the welding bearing mechanism; the first carrying mechanism stacks the battery pieces on the first welding strip group; the welding strip laying mechanism is used for stacking the second welding strip group on the battery piece; the welding bearing mechanism conveys the first welding strip set, the battery piece and the second welding strip set to a welding station and a battery piece discharging station in sequence. The welding mechanism is used for welding the first welding strip group and the second welding strip group to the battery piece when the welding bearing mechanism moves to the welding station; the second carrying mechanism takes away the battery pieces when the welding bearing mechanism moves to the battery piece discharging station. And the welding bearing mechanism returns to the feeding station after the battery pieces are taken away. The welding strip group can be automatically welded to the front surface and the back surface of a single battery piece, so that a replaced battery piece is obtained.

Description

Technical Field

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

[0002] When there are defective solar cells in a cell string, the cell string can be repaired. Taking Figure 12 the cell string as an example, the connecting solder tape between the defective solar cell 300 and the adjacent adjacent solar cell 400 is cut, and the cutting position of the solder tape is as shown by the "×" position in Figure 12 the figure. Then, the defective solar cell 300 is removed from the cell string, and the replacement solar cell 500 with a solder tape group is placed at the position vacated after the defective solar cell 300 is removed, and the solder tape group on the replacement solar cell 500 is lap-welded to the solder tape group on the adjacent solar cell 400.

[0003] Before the formal repair of the cell string, it is necessary to prepare the replacement solar cell in advance, that is, solder tape groups are welded to the front and back sides of a single solar cell. However, the current battery welding equipment is all series welding equipment for welding cell strings, that is, multiple solar cells are welded into a string through multiple solder tape groups. This type of series welding equipment is difficult to implement the welding of a single solar cell. Therefore, currently, the solder tape group is generally welded to the solar cell manually to obtain the replacement solar cell, or a single solar cell is cut from the cell string manually for use as the replacement solar cell. The above preparation methods for the replacement solar cell are all inefficient and difficult to meet the batch repair requirements of the cell string. Summary of the Invention

[0004] Aiming at the technical problem that traditional series welding equipment is difficult to implement the welding of replacement solar cells, the present application provides a single-cell welding device for solar cells, and its detailed technical solution is as follows:

[0005] A single-cell welding device for solar cells includes a solar cell supply mechanism, a solder tape laying mechanism, a first handling mechanism, a welding carrier mechanism, a welding mechanism, and a second handling mechanism, wherein:

[0006] The solder tape laying mechanism is configured to lay a first solder tape group on the welding carrier mechanism located at the loading station; the first handling mechanism is configured to pick up a solar cell from the solar cell supply mechanism and stack the picked-up solar cell on the first solder tape group; the solder tape laying mechanism is further configured to stack a second solder tape group on the solar cell;

[0007] The welding carrier mechanism is configured to sequentially convey the stacked first solder tape group, solar cell, and second solder tape group to the welding station and the solar cell unloading station;

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

[0009] The second handling mechanism is arranged at the battery cell unloading station. The second handling mechanism is configured to pick up the battery cell with the solder tape welding completed from the welding carrier mechanism when the welding carrier mechanism moves to the battery cell unloading station.

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

[0011] The single-piece battery cell welding device of the present application can automatically weld the solder tape groups to the front and back surfaces of a single-piece battery cell, thereby obtaining replacement battery cells and realizing the continuous production of replacement battery cells. The present application improves the welding efficiency of replacement battery cells.

[0012] In some embodiments, the first handling mechanism stacks the picked-up battery cells on the first solder tape group, such that the first end of the first solder tape group extends outward toward the first side of the battery cell, and the second end of the first solder tape group is located below the battery cell; the solder tape laying mechanism stacks the second solder tape group on the battery cell, such that the first end of the second solder tape group is located above the battery cell, and the second end of the second solder tape group extends outward toward the second side of the battery cell.

[0013] Ensure that one end of the first solder tape group and the second solder tape group welded to the two sides of the battery cell does not extend outward from the first side and the second side of the battery cell respectively. In this way, it is ensured that the welded battery cells can meet the feeding requirements for three types of replacement battery 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 cartridge containing 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 battery cells from the cartridge 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 handling mechanism is configured to pick up the positioned battery cells from the positioning mechanism and stack the picked-up battery cells on the first solder tape 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 the battery cells to be welded with solder tapes and realizes the positioning of the battery cells, thereby ensuring that the first handling mechanism can stack the battery cells accurately on the first solder tape group according to the position information of the battery cells obtained from the battery cell supply mechanism.

[0016] In some embodiments, 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 solder tape group; the first handling mechanism is further configured to press and place a tooling on the second solder tape group at the loading station, so as to press the second solder tape group against the battery cells.

[0017] By providing an adsorption structure on the bearing surface of the welding bearing mechanism, the adsorption of the battery cells stacked on the first solder tape group is realized, so as to ensure that the first solder tape group can be closely attached to the lower surface of the battery cells, and avoid the dislocation of the first solder tape group and the battery cells during the movement of the welding bearing mechanism; and by pressing and placing the tooling on the second solder tape group, it is ensured that the second solder tape group can be pressed against the upper surface of the battery cells, and avoid the dislocation of the second solder tape group and the battery cells during the movement of the welding bearing mechanism.

[0018] In some embodiments, the single-piece battery cell welding device further includes a third handling mechanism; on the moving path of the welding bearing mechanism, a tooling unloading station is further provided between the welding station and the battery cell unloading station; the third handling mechanism is arranged at the tooling unloading station, and the third handling mechanism is configured to pick up the tooling from the welding bearing mechanism when the welding bearing mechanism moves from the welding station to the tooling unloading station; the third handling mechanism is further configured to place the tooling back on the welding bearing mechanism when the welding bearing mechanism moves from the battery cell unloading station to the tooling unloading station.

[0019] After the solder tape welding of the battery cells is completed, the third handling mechanism automatically removes the tooling from the battery cells, and when the welding bearing mechanism returns from the battery cell unloading station to the loading station, the third handling mechanism places the tooling back on the welding bearing mechanism, so that the welding bearing mechanism can bring the tooling back to the loading station, thereby realizing the recycling of the tooling.

[0020] In some embodiments, the first handling mechanism includes a driving part, a first picking part and a second picking part, wherein: both the first picking part and the second picking part are 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 battery cells on the first solder tape group; the driving part is further used to drive the second picking part to pick up the tooling from the welding bearing mechanism returning to the loading station, and to drive the second picking part to press and place the picked tooling on the second solder tape group.

[0021] By commonly installing the first picking part and the second picking part at the driving end of the driving part, the picking and placing of the battery cells and the picking and placing of the tooling are both driven and completed by one driving part, with a compact structure and reduced equipment manufacturing cost.

[0022] In some embodiments, the single-piece welding device for solar cells further includes a tooling buffer table. The first handling mechanism includes a driving part, a first picking part, and a second picking part, where: both the first picking part and the second picking part are installed at the driving end of the driving part; the driving part is configured to drive the first picking part to pick up solar cells from the solar cell supply mechanism and stack the picked solar cells onto the first solder tape group; the driving part is further configured to drive the second picking part to pick up tooling from the tooling buffer table and press the picked tooling onto the second solder tape group; the driving part is further configured to drive the second picking part to pick up tooling from the welding carrier mechanism that returns to the loading station and place the tooling onto the tooling buffer table.

[0023] By commonly installing the first picking part and the second picking part at the driving end of the driving part, the picking and placing of solar cells and the picking and placing of tooling are both driven and completed by one driving part, with a compact structure and reduced equipment manufacturing costs; and by setting up the tooling buffer table, the caching of tooling is realized, and there is no need for the second picking part to always hold the tooling.

[0024] In some embodiments, a heating element is provided inside the tooling buffer table, and the heating element is used to preheat the tooling cached on the tooling buffer table.

[0025] After the preheated tooling is pressed onto the second solder tape group, the second solder tape group and the solar cells can be heated, thereby shortening the welding time of the welding mechanism and improving the welding efficiency.

[0026] In some embodiments, the solder tape laying mechanism includes a solder tape feeding mechanism, a solder tape traction mechanism, a flux coating mechanism, a solder tape pressing mechanism, and a solder tape cutting mechanism, where: the solder tape feeding mechanism is configured to provide multiple solder tapes; the solder tape traction mechanism is configured to clamp the end of the solder tape and pull the solder tape so that the solder tape sequentially passes through the flux coating mechanism, the solder tape pressing mechanism, and the solder tape cutting mechanism; the flux coating mechanism is configured to coat flux onto the solder tape; the solder tape pressing mechanism is configured to press the solder tape, and the solder tape cutting mechanism is configured to cut the pressed solder tape to obtain the first solder tape group or the second solder tape group; the solder tape traction mechanism is further configured to lay the first solder tape group onto the welding carrier mechanism or stack the second solder tape group onto the solar cells.

[0027] Through the cooperation of the solder tape feeding mechanism, the solder tape traction mechanism, the flux coating mechanism, the solder tape pressing mechanism, and the solder tape cutting mechanism, the solder tape laying mechanism realizes the automatic preparation of the first solder tape group and the second solder tape group, and also realizes the automatic laying of the first solder tape group and the second solder tape group.

[0028] In some embodiments, the cross-section of the solder ribbon is circular. The solder ribbon laying mechanism further includes a solder ribbon flattening mechanism, which is located between the solder ribbon pressing mechanism and the solder ribbon cutting mechanism. The solder ribbon flattening mechanism is configured to squeeze a solder ribbon section with a predetermined length on the solder ribbon into a flat solder ribbon section before the solder ribbon cutting mechanism cuts the solder ribbon.

[0029] In order to reduce the fragmentation rate of the battery string in the subsequent lamination process, the solder ribbon sections between adjacent solar cells in the battery string are often pre-flattened into flat solder ribbon sections. The solder ribbon on the defective solar cell cut from such a battery string may have flat solder ribbon sections. Therefore, the solder ribbon on the replacement solar cell used to replace the defective solar cell also needs to be flattened. By providing the solder ribbon flattening mechanism, the flattening of a solder ribbon section with a predetermined length on the circular solder ribbon is achieved, so that the first solder ribbon group or the second solder ribbon group on the prepared replacement solar cell has flat solder ribbon sections to meet the repair requirements.

[0030] In some embodiments, the welding carrier mechanism includes a first translation mechanism and a welding carrier table. The welding carrier table is mounted on the moving part of the first translation mechanism. The welding carrier table is provided with suction holes for sucking the solar cells. The first solder ribbon group, the solar cell, and the second solder ribbon group are carried on the welding carrier table. The first translation mechanism is configured to drive the welding carrier table to reciprocate horizontally.

[0031] A welding carrier mechanism with a simple structure is provided, which realizes the loading and conveying of the first solder ribbon group, the solar cell, and the second solder ribbon group, so that the stacked first solder ribbon group, the solar cell, and the second solder ribbon group are sequentially conveyed to the welding station and the solar cell unloading station.

[0032] In some embodiments, the single-solar-cell welding device further includes a detection mechanism and a solar cell receiving mechanism; the second handling mechanism is further configured to transfer the solar cell taken from the welding carrier mechanism to the detection mechanism; the detection mechanism is configured to perform quality inspection on the solar cell; the second handling mechanism is further configured to transfer the solar cell passing the inspection to the solar cell receiving mechanism, and transfer the solar cell failing the inspection into the NG sheet recycling mechanism.

[0033] By providing the detection mechanism and the solar cell receiving mechanism, the inspection of the solar cell after solder ribbon welding is realized, ensuring that the solar cells received by the solar cell receiving mechanism are all solar cells with qualified welding quality. The solar cell receiving mechanism realizes the collection of the welded qualified solar cells, which can be supplied to multiple battery string repair machines in the subsequent process.

[0034] In some embodiments, the detection mechanism includes an EL detection unit and an appearance detection unit. The EL detection unit is configured to perform EL detection on the solar cell, and the appearance detection unit is configured to perform appearance detection on the solar cell.

[0035] By setting up the inspection mechanism, the inspection mechanism can detect the soldering voids, internal defects and appearance defects of the solar cell after the solder tape welding is completed.

[0036] In some embodiments, the solar cell receiving mechanism includes a receiving and conveying mechanism, a lifting mechanism, a docking conveying mechanism and a basket conveying mechanism, wherein: the receiving and conveying mechanism is configured to receive and convey the inspected solar cells carried by the second handling mechanism; the basket conveying mechanism is arranged below the receiving and conveying mechanism; the lifting mechanism is arranged between the receiving and conveying mechanism and the 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 is docked with the basket conveying mechanism; the basket conveying mechanism is configured to convey an empty basket to the docking conveying mechanism or receive the full basket filled with solar cells output by the docking conveying mechanism; the lifting mechanism is further configured to drive the docking conveying mechanism to rise to the receiving station, the receiving and conveying mechanism extends into the empty basket located on the docking conveying mechanism and conveys the solar cells into the empty basket, and the lifting mechanism is further configured to drive the docking conveying mechanism to rise or fall so that the solar cells conveyed by the receiving and conveying mechanism are sequentially inserted into the empty basket.

[0037] Through the cooperation of the receiving and conveying mechanism, the lifting mechanism, the docking conveying mechanism and the basket conveying mechanism, the solar cell receiving mechanism can automatically stack the inspected solar cells carried by the second handling mechanism into the basket in sequence, and the solar cell receiving mechanism can automatically realize the basket changing operation to improve the receiving efficiency.

[0038] 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 solar cell receiving mechanism further 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 configured to drive the docking conveying mechanism located at the basket changing station to translate so that the docking conveying mechanism is docked with the upper basket conveying part or the lower basket conveying part; the upper basket conveying part is configured to convey an empty basket to the docking conveying mechanism; the lower basket conveying part is configured to receive the full basket filled with solar cells output by the docking conveying mechanism.

[0039] Through the cooperation of the upper basket conveying part and the lower basket conveying part, after the basket conveying mechanism receives the basket filled with solar cells from the docking conveying mechanism, it can immediately convey an empty basket to the docking conveying mechanism, thereby improving the basket changing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 is a schematic structural diagram of the single-piece soldering device for solar cells according to the embodiment of the present application from the first perspective;

[0041] Figure 2 is Figure 1 a partial enlarged view of area A in

[0042] Figure 3 Schematic diagram of the single-cell welding device for the battery cells in the embodiments of the present application from a second perspective;

[0043] Figure 4 is Figure 3 Local enlarged view of area B in

[0044] Figure 5 Schematic diagram of the single-cell welding device for the battery cells in the embodiments of the present application from a third perspective;

[0045] Figure 6 is Figure 5 Local enlarged view of area C in

[0046] Figure 7 Schematic diagram of the single-cell welding device for the battery cells in the embodiments of the present application from a fourth perspective;

[0047] Figure 8 is Figure 7 Local enlarged view of area D in

[0048] Figure 9 Schematic diagram of the battery cell receiving mechanism in the embodiments of the present application;

[0049] Figure 10 Schematic diagram of the first handling mechanism in one embodiment of the present application;

[0050] Figure 11 Schematic diagram of the first handling mechanism in another embodiment of the present application;

[0051] Figure 12 Schematic diagram of the battery string repair process;

[0052] Figures 1 to 12 includes:

[0053] Battery cell supply mechanism 1:

[0054] Conveyor mechanism 11;

[0055] Transfer mechanism 12;

[0056] Positioning mechanism 13: positioning platform 131, positioning camera 132;

[0057] Solder tape laying mechanism 2:

[0058] Solder tape feeding mechanism 21;

[0059] Solder tape traction mechanism 22;

[0060] Flux coating mechanism 23;

[0061] Welding tape pressing mechanism 24;

[0062] Welding tape cutting mechanism 25;

[0063] First handling mechanism 3:

[0064] Drive part 31;

[0065] First picking part 32;

[0066] Second picking part 33;

[0067] Welding bearing mechanism 4:

[0068] Welding bearing table 41;

[0069] First translation mechanism 42;

[0070] Welding mechanism 5;

[0071] Second handling mechanism 6;

[0072] Third handling mechanism 7;

[0073] Tooling buffer table 8;

[0074] Detection mechanism 9;

[0075] Cell collecting mechanism 10:

[0076] Collecting conveyor mechanism 101;

[0077] Lifting mechanism 102;

[0078] Docking conveyor mechanism 103;

[0079] Basket conveyor mechanism 104: upper basket conveyor part 1041, lower basket conveyor part 1042;

[0080] Second translation mechanism 105;

[0081] Basket 100, defective cell 300, adjacent cell 400, replacement cell 500. Detailed implementation manners

[0082] To make the above objects, features and advantages of the present application more obvious and understandable, the present application will be further described in detail below with reference to the accompanying drawings and specific implementation manners.

[0083] As Figures 1 to 8 shown, the single-cell welding device for cells in the embodiment of the present application includes a cell supply mechanism 1, a welding tape laying mechanism 2, a first handling mechanism 3, a welding bearing mechanism 4, a welding mechanism 5 and a second handling mechanism 6, wherein:

[0084] The solder tape laying mechanism 2 is configured to lay the first solder tape group on the welding carrier mechanism 4 located at the loading station. The first handling mechanism 3 is configured to pick up the battery cells from the battery cell supply mechanism 1 and stack the picked-up battery cells on the first solder tape group. The solder tape laying mechanism 2 is further configured to stack the second solder tape group on the battery cells.

[0085] The welding carrier mechanism 4 is configured to sequentially convey the stacked first solder tape group, battery cells, and second solder tape group to the welding station and the battery cell unloading station.

[0086] The welding mechanism 5 is disposed at the welding station. The welding mechanism 4 is configured to weld the first solder tape group and the second solder tape group located on the welding carrier mechanism to the battery cells when the welding carrier mechanism moves to the welding station.

[0087] The second handling mechanism 6 is disposed at the battery cell unloading station. The second handling mechanism 6 is configured to pick up the battery cells with the solder tape welded thereon from the welding carrier mechanism 4 when the welding carrier mechanism 4 moves to the battery cell unloading station.

[0088] The welding carrier mechanism 4 is further configured to return from the battery cell unloading station to the loading station after the battery cells are picked up.

[0089] Wherein, both the first solder tape group and the second solder tape group include a plurality of solder tapes extending along a first horizontal direction, and the plurality of solder tapes are arranged at intervals along a second horizontal direction perpendicular to the first horizontal direction. Usually, the number of solder tapes in the first solder tape group and the second solder tape group is the same, the number of solder tapes in the first solder tape group is equal to the number of solder tapes connected to the lower surface of the defective battery cell in the battery string to be repaired, and the number of solder tapes in the second solder tape group is equal to the number of solder tapes connected to the upper surface of the defective battery cell in the battery string to be repaired.

[0090] The solder tape is a copper tape with a coating. Wherein, the coating can be a tin coating, a SnBiAg (tin-bismuth-silver) alloy layer, or other metal layer or alloy layer.

[0091] The working process of the single-piece welding device for battery cells in the embodiment of the present application is as follows:

[0092] First, the welding carrier mechanism 4 moves to the loading station.

[0093] The solder tape laying mechanism 2 lays the first solder tape group on the welding carrier mechanism 4. Subsequently, the first handling mechanism 3 picks up the battery cells from the battery cell supply mechanism 1 and stacks the picked-up battery cells on the first solder tape group. Subsequently, the solder tape laying mechanism 2 stacks the second solder tape group on the battery cells.

[0094] Next, the welding carrier mechanism 4 conveys the stacked first solder tape group, solar cell, and second solder tape group to the welding station. The welding mechanism 4 welds the first solder tape group and the second solder tape group to the solar cell.

[0095] Next, the welding carrier mechanism 4 conveys the solar cell with the solder tape welded to the solar cell blanking station. The second handling mechanism 6 picks up the solar cell with the solder tape welded from the welding carrier mechanism 4.

[0096] Finally, the emptied welding carrier mechanism 4 returns to the loading station again, ready to receive the next first solder tape group, solar cell, and second solder tape group.

[0097] The single-piece solar cell welding device provided by the embodiment of the present application can automatically weld the solder tape group to the front and back surfaces of a single solar cell, thereby obtaining a replacement solar cell and realizing the continuous production of the replacement solar cell, improving the welding efficiency of the replacement solar cell.

[0098] According to the position (string head, string middle, or string tail) of the defective solar cell to be replaced in the battery string to be repaired, the corresponding replacement solar cells are classified into head replacement solar cells, middle replacement solar cells, and tail replacement solar cells. The solder tape groups on the three types of replacement solar cells may or may not extend out of the solar cell, and the lengths of the extensions out of the solar cell may also be different. In order to meet the feeding requirements of the three types of replacement solar cells, the replacement solar cells prepared by the single-piece solar cell welding device in the embodiment of the present application have solder tape groups on both the upper and lower surfaces extending out of the solar cell with a unified length. During subsequent formal replacement and repair, the solder tape groups on the replacement solar cells prepared by this device can be sheared as needed.

[0099] Optionally, the first handling mechanism 3 stacks the picked-up solar cells on the first solder tape group, such that the first end of the first solder tape group extends outward toward the first side of the solar cell, and the second end of the first solder tape group is located below the solar cell and does not extend out of the solar cell. The solder tape laying mechanism 2 stacks the second solder tape group on the solar cell, such that the first end of the second solder tape group is located above the solar cell and does not extend out of the solar cell, and the second end of the second solder tape group extends outward toward the second side of the solar cell. In this way, it can be ensured that one end of the first solder tape group and the second solder tape group welded to both sides of the solar cell extends outward from the first side and the second side of the solar cell respectively. Subsequently, when supplying this solar cell as a replacement solar cell to a later repair machine, at least one of the first solder tape group and the second solder tape group can be sheared according to the type of the specific replacement solar cell required, so as to cut the solar cell into the required head replacement solar cell, middle replacement solar cell, or tail replacement solar cell.

[0100] Of course, it is also possible to directly control the solder tape laying mechanism in the single-cell welding device of the present application to stack the first solder tape group and the second solder tape group that meet the above length requirements on the upper and lower surfaces of the cell according to the length requirements for the first solder tape group, the second solder tape group in the head replacement cell, the middle replacement cell, or the tail replacement cell, so as to prepare the head replacement cell, the middle replacement cell, or the tail replacement cell that can be directly supplied to the repair machine.

[0101] As Figures 1 to 4 shown, optionally, the cell supply mechanism 1 includes a conveying mechanism 11, a transfer mechanism 12, and a positioning mechanism 13, where: the conveying mechanism 11 is configured to convey the cassette containing cells towards the positioning mechanism 13. The transfer mechanism 12 is located between the conveying mechanism 11 and the positioning mechanism 13, and the transfer mechanism 12 is configured to pick up the cells from the cassette and transfer the picked-up cells to the positioning mechanism 13. The positioning mechanism 13 is configured to position the cells to obtain the position information of the cells.

[0102] The first handling mechanism 3 is configured to pick up the positioned cells from the positioning mechanism 13 and stack the picked-up cells on the first solder tape group according to the position information of the cells, so as to achieve accurate stacking of the cells, and finally ensure the position accuracy of each solder tape in the first solder tape group relative to the cells.

[0103] The conveying mechanism 11 can be various existing linear conveying mechanisms such as a belt conveying mechanism or a roller conveying mechanism. The transfer mechanism 12 can be, for example, a suction cup group driven by a robotic arm.

[0104] As Figure 4 shown, optionally, the positioning mechanism 13 includes a positioning platform 131 and a positioning camera 132 disposed above the positioning platform 131, where the positioning platform 131 is used to carry the cells transferred by the transfer mechanism 12; the positioning camera 132 is used to perform photographic positioning on the cells located on the positioning platform 131.

[0105] Optionally, the positioning camera 132 is connected to the PLC controller. After the positioning camera 132 takes a photo of the cells on the positioning platform 131, it sends the image of the cells to the PLC controller, and the PLC controller performs image analysis (such as gray value analysis) on the image to perform positioning on the cells.

[0106] Optionally, an adsorption structure is provided on the bearing surface of the welding bearing mechanism 3, and the adsorption structure can be, for example, adsorption holes. The adsorption structure is used to adsorb the cells stacked on the first solder tape group, so as to ensure that the first solder tape group can be closely attached to the lower surface of the cells and prevent the first solder tape group from deviating from the cells when the welding bearing mechanism 3 moves.

[0107] In addition, after the solder tape laying mechanism 2 stacks the second solder tape group on the solar cell at the loading station, the first handling mechanism 3 is further configured to press and place a tooling on the second solder tape group, so as to ensure that the second solder tape group can be pressed tightly on the upper surface of the solar cell and prevent the second solder tape group from deviating from the solar cell when the welding carrier mechanism 3 moves.

[0108] As Figure 1 shown, optionally, the single-piece welding device for solar cells in the embodiment of the present application further includes a third handling mechanism 7. A tooling unloading station is also provided on the moving path of the welding carrier mechanism 4 between the welding station and the solar cell unloading station. The third handling mechanism 7 is arranged at the tooling unloading station. When the welding carrier mechanism 4 conveys the solar cell with the solder tape welded to the solar cell unloading station, it will pass through the tooling unloading station. When reaching the tooling unloading station, the third handling mechanism 7 picks up the tooling from the welding carrier mechanism 4.

[0109] During the process that the welding carrier mechanism 4 from which the solar cell has been taken away returns from the solar cell unloading station to the loading station, when passing through the tooling unloading station, the third handling mechanism 7 puts the picked-up tooling back onto the welding carrier mechanism 4, and the welding carrier mechanism 4 brings the tooling back to the loading station for the next use.

[0110] As Figure 10 shown, in some alternative embodiments, the first handling mechanism 3 includes a driving part 31, a first picking part 32 and a second picking part 33, wherein: both the first picking part 32 and the second picking part 33 are installed at the driving end of the driving part 31. The driving part 31 is used to drive the first picking part 32 to pick up a solar cell from the solar cell supply mechanism 1 and stack the picked-up solar cell on the first solder tape group. The driving part 31 is also used to drive the second picking part 33 to pick up a tooling from the welding carrier mechanism 4 returning to the loading station, and to drive the second picking part 33 to press and place the picked-up tooling on the second solder tape group.

[0111] Figure 10 In the embodiment, after the second picking part 33 picks up the tooling from the welding carrier mechanism 4 returning to the loading station, the tooling remains on the second picking part 33. When the first picking part 32 and the solder tape laying mechanism 2 complete the stacking of the first solder tape group, the solar cell and the second solder tape group, the second picking part 33 then puts the tooling back onto the welding carrier mechanism 4 again to press the second solder tape group tightly onto the solar cell.

[0112] To avoid interference of the tooling on the second picking part 33 with the first picking part 32, as Figure 10 shown, the second picking part 33 and the first picking part 32 are arranged side by side at an interval.

[0113] In some other alternative embodiments, as Figure 1 、 Figure 2 andFigure 4 As shown, the single-piece welding device for battery cells further includes a tooling buffer table 8 for buffering tooling. In these embodiments, the driving part 31 is used to drive the second picking part 33 to pick up the tooling from the tooling buffer table 8 and press the picked-up tooling onto the second solder tape group. The driving part 31 is also used to drive the second picking part 33 to pick up the tooling from the welding carrier mechanism 4 that returns to the loading station and place the tooling on the tooling buffer table 8.

[0114] That is to say, in these embodiments, after the second picking part 33 picks up the tooling from the welding carrier mechanism 4 that returns to the loading station, the tooling is buffered on the tooling buffer table 8. When the first picking part 32 and the solder tape laying mechanism 2 complete the stacking of the first solder tape group, the battery cell and the second solder tape group, the second picking part 33 then picks up the tooling from the tooling buffer table 8 and places the tooling on the welding carrier mechanism 4 to press the second solder tape group onto the battery cell.

[0115] Since the tooling picked up by the second picking part 33 is buffered on the tooling buffer table 8, when the first picking part 32 lays the battery cell, there is no tooling on the second picking part 33, and there is no problem of interference of the tooling on the second picking part 33 with the first picking part 32. In order to reduce the installation space of the first picking part 32 and the second picking part 33, as Figure 11 shown, optionally, the second picking part 33 includes two adsorption parts arranged side by side at intervals for adsorbing both ends of the tooling, and the first picking part 32 is arranged between the two adsorption parts of the second picking part 33.

[0116] Optionally, the first picking part 32 includes a plurality of suction cups for picking up the battery cell by the adsorption force of the suction cups; the second picking part 33 includes a plurality of magnets for picking up the tooling by adsorbing the frame of the tooling.

[0117] Optionally, a heating element is provided in the tooling buffer table 8, and the heating element is used to preheat the tooling buffered on the tooling buffer table 8. After the preheated tooling is pressed onto the second solder tape group, the second solder tape group and the battery cell can be heated, thereby shortening the welding time of the welding mechanism 5 and improving the welding efficiency.

[0118] As Figures 1 to 6As shown, optionally, the solder ribbon laying mechanism 2 includes a solder ribbon feeding mechanism 21, a solder ribbon traction mechanism 22, a flux coating mechanism 23, a solder ribbon pressing mechanism 24, and a solder ribbon cutting mechanism 25, where: The solder ribbon feeding mechanism 21 is configured to feed out multiple solder ribbons. The solder ribbon traction mechanism 22 is configured to clamp the ends of the multiple solder ribbons fed out by the solder ribbon feeding mechanism 21 and pull the solder ribbons so that the solder ribbons sequentially pass through the flux coating mechanism 23, the solder ribbon pressing mechanism 24, and the solder ribbon cutting mechanism 25. The flux coating mechanism 23 is configured to coat flux on the multiple solder ribbons. The solder ribbon pressing mechanism 24 is configured to press the multiple solder ribbons, and the solder ribbon cutting mechanism 25 is configured to cut the pressed multiple solder ribbons to obtain a first solder ribbon group or a second solder ribbon group. The solder ribbon traction mechanism 22 is also used to lay the first solder ribbon group on the welding carrier mechanism 4 or stack the second solder ribbon group on the solar cell.

[0119] It can be seen that through the cooperation of the solder ribbon feeding mechanism 21, the solder ribbon traction mechanism 22, the flux coating mechanism 23, the solder ribbon pressing mechanism 24, and the solder ribbon cutting mechanism 25, the solder ribbon laying mechanism 2 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.

[0120] In some repair application cases, in order to reduce the fragmentation rate of the battery string in the subsequent lamination process, the solder ribbon segments between adjacent solar cells in the battery string to be repaired are flat solder ribbon segments. There may be flat solder ribbon segments on the solder ribbons of the defective solar cells cut from such battery strings. Therefore, the solder ribbons on the replacement solar cells used to replace the defective solar cells also need to be flattened.

[0121] Therefore, optionally, when the solder ribbons fed out by the solder ribbon feeding mechanism 21 are circular solder ribbons with a circular cross-section, the solder ribbon laying mechanism 2 further includes a solder ribbon flattening mechanism. The solder ribbon flattening mechanism is located between the solder ribbon pressing mechanism 24 and the solder ribbon cutting mechanism 25, and the solder ribbon flattening mechanism is used to extrude a solder ribbon segment with a predetermined length on the solder ribbon into a flat solder ribbon segment before the solder ribbon cutting mechanism 25 cuts the solder ribbon.

[0122] As Figure 4 and Figure 6 shown, optionally, the welding carrier mechanism 4 includes a first translation mechanism 42 and a welding carrier table 41. Among them, the welding carrier table 41 is installed on the moving part of the first translation mechanism 42. The welding carrier table 41 is provided with adsorption holes for adsorbing solar cells. The first solder ribbon group, the solar cell, and the second solder ribbon group are stacked on the welding carrier table 41, and the first translation mechanism 42 is used to drive the welding carrier table 41 to reciprocate horizontally between the loading station and the solar cell unloading station.

[0123] Optionally, the first translation mechanism can 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 it can reciprocate and translate between different workstations.

[0124] Such as Figure 1 As shown, optionally, the single-piece welding device for solar cells in the embodiment of the present application further includes a detection mechanism 9 and a solar cell receiving mechanism 10. After the second handling mechanism 6 takes the solar cell glue from the welding carrier mechanism 4, it first transports the solar cell to the detection mechanism 9, and the detection mechanism 9 performs quality inspection on the solar cell. The second handling mechanism 6 transports the solar cells that pass the inspection to the solar cell receiving mechanism 10, and transports the solar cells that do not pass the inspection into the NG sheet recycling mechanism.

[0125] By setting the detection mechanism 9, the detection of the solar cells after the welding ribbon is welded is realized, so as to ensure that the solar cells received by the solar cell receiving mechanism are all solar cells with qualified welding quality, and finally ensure that the replacement solar cells supplied to the subsequent repair machine are qualified replacement solar cells. Since the solar cell receiving mechanism is provided to collect the welded replacement solar cells, the single-piece welding device for solar cells in the embodiment of the present application can supply replacement solar cells from one device to multiple repair machines, and can work independently without being restricted by the repair rhythm of the repair machine, improving the production efficiency of the replacement solar cells.

[0126] Optionally, the detection mechanism 9 includes an EL detection unit and an appearance detection unit. Among them, the EL detection unit is used to perform EL detection on the solar cells, and the appearance detection unit is used to perform appearance detection on the solar cells. With such a setting, the detection mechanism 9 can detect the virtual welding, internal defects and appearance defects of the solar cells after the welding ribbon is welded.

[0127] Optionally, the EL detection unit includes an EL power-on component and an infrared camera. The EL power-on component powers on the solar cells through the first welding ribbon group and the second welding ribbon group, and the infrared camera obtains the infrared image of the solar cells in the powered-on state. By performing image analysis on the infrared image, the virtual welding and internal defect detection of the solar cells can be completed. The appearance detection unit can be various visible light imaging cameras, which take pictures of the solar cells in the unpowered state to obtain the appearance image of the solar cells. By performing image analysis on the appearance image of the solar cells, the appearance detection of the solar cells can be completed. Optionally, the infrared camera and the visible light imaging camera respectively send the obtained infrared image and appearance image of the solar cells to the PLC, and the PLC executes the image recognition algorithm stored therein to perform virtual welding, internal defect detection and appearance detection on the solar cells.

[0128] Such as Figure 1 And Figures 7 to 9As shown, optionally, the battery cell receiving mechanism 10 includes a receiving and conveying mechanism 101, a lifting mechanism 102, a docking conveying mechanism 103, and a basket conveying mechanism 104, where:

[0129] The receiving and conveying mechanism 101 is used to receive and convey the detected battery cells carried by the second handling mechanism 6. The basket conveying mechanism 104 is arranged below the receiving and conveying mechanism 101.

[0130] The lifting mechanism 102 is arranged between the receiving and conveying mechanism 101 and the basket conveying mechanism 104, and the docking conveying mechanism 103 is connected to the moving part of the lifting mechanism 102.

[0131] 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 is docked with the basket conveying mechanism 104.

[0132] The basket conveying mechanism 104 is used to convey the empty basket 100 to the docking conveying mechanism 103 or receive the full basket filled with battery cells output by the docking conveying mechanism 103.

[0133] The lifting mechanism 102 is further configured to drive the docking conveying mechanism 103 to rise to the receiving station. The discharging end of the receiving and conveying mechanism 101 extends into the top space of the empty basket 100 located on the docking conveying mechanism 103 and conveys the battery cells into the empty basket 100. The lifting mechanism 102 is further configured to drive the docking conveying mechanism 103 to rise or fall so that the battery cells conveyed by the receiving and conveying mechanism 101 are sequentially inserted into the empty basket 100.

[0134] Optionally, the basket 100 includes a bottom plate, a first side plate and a second side plate oppositely arranged on the bottom plate. Horizontally inserted slots are arranged on the opposite inner walls of the first side plate and the second side plate in one-to-one correspondence in the vertical direction, and each pair of horizontally inserted slots can hold one battery cell.

[0135] The optional working process of the battery cell receiving mechanism 10 in the embodiment of the present application is as follows:

[0136] 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.

[0137] Then, the lifting mechanism 102 drives the docking conveying mechanism 103 to rise to the receiving station. The discharging end of the receiving and conveying mechanism 101 extends into the top space of the empty basket 100 on the docking conveying mechanism 103.

[0138] The blanking conveying mechanism 101 inputs the battery wafers into the basket 100 one by one. Specifically, whenever a battery wafer is inserted into a pair of horizontal slots in the basket 100, the lifting mechanism 102 drives the docking conveying mechanism 103 to descend a predetermined height (such as the distance between adjacent pairs of horizontal slots), so that the discharge end of the blanking conveying mechanism 101 is aligned with the next pair of horizontal slots in the basket 100, and finally ensures that the battery wafers conveyed by the blanking conveying mechanism 101 can be inserted into the basket 100 in sequence until all the horizontal slots in the basket 100 are filled with battery wafers.

[0139] When the basket 100 is full of battery wafers, the discharge end of the blanking conveying mechanism 101 withdraws from the basket 100 to perform lifting and avoiding the basket 100. The lifting mechanism 102 drives the docking conveying mechanism 103 to descend to the basket-changing station, so that the docking conveying mechanism 103 is docked with the basket conveying mechanism 104 again.

[0140] Then, the docking conveying mechanism 103 conveys the full basket filled with battery wafers to the basket conveying mechanism 104 and receives an empty basket from the basket conveying mechanism 104.

[0141] It can be seen that through the cooperation of the blanking conveying mechanism 101, the lifting mechanism 102, the docking conveying mechanism 103 and the basket conveying mechanism 104, the battery wafer blanking mechanism 10 can automatically stack the battery wafers passed the detection carried by the second handling mechanism 6 into the basket and can automatically complete the basket-changing operation, which greatly improves the battery wafer blanking efficiency.

[0142] Optionally, the blanking conveying mechanism 101 is a telescopic conveying mechanism, which includes a fixed conveying section and a movable conveying section slidably connected to the fixed conveying section. The movable conveying section is driven by a telescopic driving member arranged on the fixed conveying section. When the lifting mechanism 102 drives the docking conveying mechanism 103 to rise to the wafer-receiving station, the telescopic driving member drives the end of the movable conveying section (i.e., the discharge end of the blanking conveying mechanism 101) to slide towards the wafer-receiving station, so that the movable conveying section is inserted into the empty basket. When the basket is full of battery wafers, the telescopic driving member drives the movable conveying section to slide away from the wafer-receiving station, so that the movable conveying section withdraws from the basket.

[0143] Optionally, the basket conveying mechanism 104 includes an upper basket conveying part 1041 and a lower basket conveying part 1042 which are arranged side by side at the same height. The battery cell receiving mechanism 104 further includes a second translation mechanism 105, and the lifting mechanism 102 is connected to the moving part 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 is docked with the upper basket conveying part 1041 or the lower basket conveying part 1042. When the docking conveying mechanism 103 is docked with the upper basket conveying part 1041, the upper basket conveying part 1041 conveys an empty basket to the docking conveying mechanism 103. When the docking conveying mechanism 103 is docked with the lower conveying part 1042, the docking conveying mechanism 103 conveys the full basket filled with battery cells thereon to the lower basket conveying part 1042, and the lower basket conveying part 1042 conveys the full basket to the subsequent basket discharging station.

[0144] For example, when the docking conveying mechanism 103 carrying the basket filled with battery cells descends to the basket changing station, the second translation mechanism 105 drives the docking conveying mechanism 103 to translate, so that the docking conveying mechanism 103 is docked with the lower basket conveying part 1042, so that the docking conveying mechanism 103 conveys the basket filled with battery cells to the lower basket conveying part 1042. Then, the second translation mechanism 105 drives the docking conveying mechanism 103 to translate, so that the docking conveying mechanism 103 is docked with the upper basket conveying part 1041, so that the docking conveying mechanism 103 receives an empty basket from the upper basket conveying part 1041.

[0145] It can be seen that through the cooperation of the upper basket conveying part 1041 and the lower basket conveying part 1042, after the basket conveying mechanism 104 receives the basket filled with battery cells from the docking conveying mechanism 103, it can immediately convey an empty basket to the docking conveying mechanism 103 for conveying, thereby improving the basket changing efficiency.

[0146] The above has described the present application in sufficient detail with a certain particularity. Those of ordinary skill in the art should understand that the description in the embodiments is only exemplary, and all changes made without departing from the true spirit and scope of the present application should fall within the protection scope of the present application. The scope to be protected by the present application is defined by the claims described, rather than by the above description in the embodiments.

Claims

1. A single-cell welding device for solar cells, characterized in that, the single-cell welding device for solar cells includes a solar cell supply mechanism, a solder tape laying mechanism, a first handling mechanism, a welding carrier mechanism, a welding mechanism and a second handling mechanism, wherein: the solder tape laying mechanism is configured to lay a first solder tape group on the welding carrier mechanism located at the loading station; the first handling mechanism is configured to pick up a solar cell from the solar cell supply mechanism and stack the picked-up solar cell on the first solder tape group; the solder tape laying mechanism is further configured to stack a second solder tape group on the solar cell; the welding carrier mechanism is configured to sequentially convey the stacked first solder tape group, the solar cell and the second solder tape group to the welding station and the solar cell unloading station; the welding mechanism is arranged at the welding station, and the welding mechanism is configured to weld the first solder tape group and the second solder tape group located on the welding carrier mechanism to the solar cell when the welding carrier mechanism moves to the welding station; the second handling mechanism is arranged at the solar cell unloading station, and the second handling mechanism is configured to pick up the solar cell with the solder tape welded thereon from the welding carrier mechanism when the welding carrier mechanism moves to the solar cell unloading station; the welding carrier mechanism is further configured to return from the solar cell unloading station to the loading station after the solar cell is picked up.

2. The single-cell welding device for solar cells according to claim 1, characterized in that, the first handling mechanism stacks the picked-up solar cell on the first solder tape group, so that the first end of the first solder tape group extends outward toward the first side of the solar cell, and the second end of the first solder tape group is located below the solar cell; the solder tape laying mechanism stacks the second solder tape group on the solar cell, so that the first end of the second solder tape group is located above the solar cell, and the second end of the second solder tape group extends outward toward the second side of the solar cell.

3. The single-cell welding device for solar cells according to claim 1, characterized in that, the solar cell supply mechanism includes a conveying mechanism, a transfer mechanism and a positioning mechanism, wherein: the conveying mechanism is configured to convey a cartridge containing solar 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 a solar cell from the cartridge and transfer the picked-up solar cell to the positioning mechanism; the positioning mechanism is configured to position the solar cell to obtain the position information of the solar cell; the first handling mechanism is configured to pick up the positioned solar cell from the positioning mechanism and stack the picked-up solar cell on the first solder tape group according to the position information of the solar cell.

4. The single-cell welding device for solar cells according to claim 1, characterized in that, an adsorption structure is provided on the bearing surface of the welding carrier mechanism, and the adsorption structure is used for adsorbing the solar cell stacked on the first solder tape group; The first handling mechanism is further configured to press and place a tooling on the second solder ribbon group at the loading station, so as to press the second solder ribbon group onto the solar cell.

5. The solar cell single-piece welding device according to claim 4, wherein, the solar cell single-piece welding device further includes a third handling mechanism; on the moving path of the welding and carrying mechanism, a tooling unloading station is further provided between the welding station and the solar cell unloading station; the third handling mechanism is arranged at the tooling unloading station, and the third handling mechanism is configured to pick up the tooling from the welding and carrying mechanism when the welding and carrying mechanism moves from the welding station to the tooling unloading station; the third handling mechanism is further configured to place the tooling back onto the welding and carrying mechanism when the welding and carrying mechanism moves from the solar cell unloading station to the tooling unloading station.

6. The solar cell single-piece welding device according to claim 5, wherein, the first handling mechanism includes a driving part, a first picking part and a second picking part, wherein: both the first picking part and the second picking part are installed at the driving end of the driving part; the driving part is used to drive the first picking part to pick up a solar cell from the solar cell supply mechanism, and stack the picked solar cell onto the first solder ribbon group; the driving part is further used to drive the second picking part to pick up the tooling from the welding and carrying mechanism returning to the loading station, and to drive the second picking part to press and place the picked tooling onto the second solder ribbon group.

7. The solar cell single-piece welding device according to claim 5, wherein, the solar cell single-piece welding device further includes a tooling buffer table, and the first handling mechanism includes a driving part, a first picking part and a second picking part, wherein: both the first picking part and the second picking part are installed at the driving end of the driving part; the driving part is used to drive the first picking part to pick up a solar cell from the solar cell supply mechanism, and stack the picked solar cell onto the first solder ribbon group; the driving part is further used to drive the second picking part to pick up the tooling from the tooling buffer table, and press and place the picked tooling onto the second solder ribbon group; the driving part is further used to drive the second picking part to pick up the tooling from the welding and carrying mechanism returning to the loading station, and place the tooling onto the tooling buffer table.

8. The solar cell single-piece welding device according to claim 7, wherein, a heating element is arranged in the tooling buffer table, and the heating element is used to preheat the tooling buffered on the tooling buffer table.

9. The solar cell single-piece welding device according to claim 1, wherein, the solder ribbon laying mechanism includes a solder ribbon feeding mechanism, a solder ribbon traction mechanism, a flux coating mechanism, a solder ribbon pressing mechanism and a solder ribbon cutting mechanism, wherein: the solder ribbon feeding mechanism is configured to provide multiple solder ribbons; The solder strip traction mechanism is configured to clamp the end of the solder strip and pull the solder strip so that the solder strip sequentially passes through the solder flux coating mechanism, the solder strip pressing mechanism, and the solder strip cutting mechanism; The solder flux coating mechanism is configured to coat solder flux onto the solder strip; The solder strip pressing mechanism is configured to press the solder strip, and the solder strip cutting mechanism is configured to cut the pressed solder strip to obtain the first solder strip group or the second solder strip group; The solder strip traction mechanism is further configured to lay the first solder strip group on the welding carrier mechanism, or stack the second solder strip group on the battery cell.

10. The single-piece welding device for battery cells according to claim 9, wherein, the cross-section of the solder strip is circular, the solder strip laying mechanism further includes a solder strip flattening mechanism, the solder strip flattening mechanism is located between the solder strip pressing mechanism and the solder strip cutting mechanism, and the solder strip flattening mechanism is configured to squeeze a solder strip section with a predetermined length on the solder strip into a flat solder strip section before the solder strip cutting mechanism cuts the solder strip.

11. The single-piece welding device for battery cells according to claim 1, wherein, the welding carrier mechanism includes a first translation mechanism and a welding carrier table. Among them, the welding carrier table is installed on the movable part of the first translation mechanism, the welding carrier table is provided with adsorption holes for adsorbing battery cells, the first solder strip group, the battery cell, and the second solder strip group are carried on the welding carrier table, and the first translation mechanism is configured to drive the welding carrier table to reciprocate horizontally.

12. The single-piece welding device for battery cells according to claim 1, wherein, the single-piece welding device for battery cells further includes a detection mechanism and a battery cell receiving mechanism; the second handling mechanism is further configured to transfer the battery cell taken from the welding carrier mechanism to the detection mechanism; the detection mechanism is configured to perform quality inspection on the battery cell; the second handling mechanism is further configured to transfer the battery cell passing the inspection to the battery cell receiving mechanism, and transfer the battery cell failing the inspection into the NG piece recycling mechanism.

13. The single-piece welding device for battery cells according to claim 12, wherein, the detection mechanism includes an EL detection part and an appearance detection part. Among them, the EL detection part is used to perform EL detection on the battery cell, and the appearance detection part is used to perform appearance detection on the battery cell.

14. The single-piece welding device for battery cells according to claim 12, wherein, the battery cell receiving mechanism includes a receiving and 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 passing the inspection carried by the second handling mechanism; the basket conveying mechanism is arranged below the receiving and conveying mechanism; the lifting mechanism is arranged between the receiving and conveying mechanism and the 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 and conveying mechanism to descend to the basket-changing station so that the docking and conveying mechanism is docked with the basket conveying mechanism; the basket conveying mechanism is used to convey an empty basket to the docking and conveying mechanism or receive the full basket filled with battery wafers output by the docking and conveying mechanism; The lifting mechanism is further configured to drive the docking and conveying mechanism to ascend to the wafer receiving station, the material receiving and conveying mechanism extends into the empty basket located on the docking and conveying mechanism and conveys the battery wafers into the empty basket, and the lifting mechanism is further configured to drive the docking and conveying mechanism to ascend or descend so that the battery wafers conveyed by the material receiving and conveying mechanism are sequentially inserted into the empty basket.

15. The single-piece welding device for battery wafers according to claim 14, characterized in that 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 wafer receiving mechanism further includes a second translation mechanism, and the lifting mechanism is connected to the moving part of the second translation mechanism; the second translation mechanism is used to drive the docking and conveying mechanism located at the basket-changing station to translate so that the docking and conveying mechanism is docked with the upper basket conveying part or the lower basket conveying part; the upper basket conveying part is used to convey an empty basket onto the docking and conveying mechanism; the lower basket conveying part is used to receive the full basket filled with battery wafers output by the docking and conveying mechanism.

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