Highly versatile battery piece efficient automatic piece matching and piece stacking production line

Abstract

The application discloses a high-efficiency automatic cell piece matching and stacking production line with high universality, which comprises a cell piece feeding and silk printing station, a cell piece detection and matching station and a cell piece stacking station; the cell piece detection and matching station comprises three parallel detection conveying lines, two matching conveying lines, a visual detection module arranged on the three detection conveying lines and the two matching conveying lines, and a matching feeding robot false piece feeding unit for carrying cell pieces from the detection conveying lines to the matching conveying lines according to a matching scheme; the cell piece stacking station comprises a stacking and curing platform arranged at the ends of the two matching conveying lines, and two stacking robots for simultaneously adsorbing cell pieces on the two matching conveying lines and placing the cell pieces on the stacking and curing platform to perform stacking. The application can realize automatic supply and feeding, silk printing of conductive glue, detection, matching and synchronous stacking by double mechanical arms before stacking of cell pieces of various specifications, and greatly improves the production efficiency of the battery module.

Description

[Technical Field]

[0001] This invention belongs to the field of battery cell stacking technology, and in particular relates to a highly versatile and efficient automatic battery cell stacking production line. [Background Technology]

[0002] A photovoltaic module's battery module is made up of several stacked battery cells. Currently, most battery modules are first made by stacking multiple battery cells to form a battery string. The battery string is stacked parallel to the short side of the battery cells, with the long side of the battery cells stacked together. Adjacent battery cells are connected by welding grid lines together. Then, multiple battery strings are stacked, and adjacent battery strings are connected in series at the ends by leads to form the entire battery module.

[0003] There is a photovoltaic module in which the cell module is directly stacked together from several independent cells in one go, without the need to stack them into a cell string first.

[0004] Most existing stacking equipment is designed for battery modules stacked in the process of "cell-cell-cell-module". For example, the high-speed photovoltaic module production equipment and process method disclosed in patent publication number CN110911522A and the stacking equipment and cell string manufacturing equipment disclosed in patent publication number CN216015403U both first stack the cells into cell strings and then stack the cell strings into battery modules, and cannot achieve the "cell-cell-module" stacking.

[0005] The stacking process that enables "cell-to-module" battery assembly mainly involves the designers designing the stacking method of the cells in the battery module. The cells in the battery module are arranged in columns, and after one column is arranged, the next adjacent column is arranged. The cells in each column have their short sides spaced apart, and the cells in adjacent columns are staggered. That is, the cells in the next column overlap the long sides of the two adjacent cells in the previous column. In this way, the cells in the next column directly connect the two adjacent cells in the previous column in series, without the need for leads or to form a battery string, thus enabling the "cell-to-module" stacking process. It is precisely because of this battery cell stacking design that the battery module needs to use half of the 1 / 6 battery cell (half the length of the long side), namely the 1 / 12 battery cell. The 1 / 12 battery cell is used to fill the half-gaps at the top and bottom of the odd or even columns to ensure the integrity of the overall regular rectangular structure of the battery module. At the same time, 1 / 6 battery cells with solder joints are also needed where junction boxes are required for welding the junction boxes. Finally, a column of connecting pieces is also needed in the last column of the battery module to serve as a connection. In the industry, this is also called a "dummy piece". The length of this piece is the same as that of the 1 / 6 battery cell, but the width is 1 / 3 of that of the 1 / 6 battery cell. It can also be called a 1 / 18 battery cell. The dummy piece is mainly used to connect the battery cells in the second to last column in series. Therefore, this battery module requires four types of battery cells: 1 / 6 battery cells, 1 / 6 battery cells with solder joints, 1 / 12 battery cells, and 1 / 18 battery cells.

[0006] Currently, there is no automated equipment to achieve the automatic stacking operation of the aforementioned battery modules. Moreover, due to the limitations of the stacking method, most existing automatic stacking equipment only has one robotic arm to perform the stacking operation. Even if there are two robotic arms, they cannot perform synchronous stacking operations. The two robotic arms can only perform stacking actions alternately, which cannot improve the stacking efficiency and results in low stacking efficiency.

[0007] Therefore, it is necessary to design a highly versatile and efficient automated cell stacking production line to solve the above-mentioned technical problems. [Summary of the Invention]

[0008] The main objective of this invention is to provide a highly versatile and efficient automated cell stacking production line that can automatically supply and feed various specifications of cells before stacking, screen print conductive adhesive, inspect, stack, and stack simultaneously with dual robotic arms, greatly improving the production efficiency of battery modules.

[0009] The present invention achieves the above objectives through the following technical solution: a highly versatile and efficient automatic cell stacking production line, comprising a cell feeding and screen printing station, a cell testing and stacking station, and a cell stacking station arranged sequentially.

[0010] The battery cell feeding screen printing station includes a screen printing turntable, a first feeding station, a second feeding station, a screen printing station, and an unloading station arranged sequentially around the screen printing turntable;

[0011] The battery cell inspection and matching station includes a PL inspection platform set at the unloading station, a second vision inspection module set above the PL inspection platform, a first inspection conveyor line, a second inspection conveyor line and a third inspection conveyor line arranged in parallel, a first matching conveyor line arranged in parallel at the end of the first inspection conveyor line, a second matching conveyor line arranged in parallel at the end of the third inspection conveyor line, an inspection loading robot that transports battery cells to the corresponding inspection conveyor line according to their type, and a first matching loading robot that transports qualified battery cells on the inspection conveyor line to the matching conveyor line according to the matching scheme.

[0012] The cell stacking station includes a stacking and curing platform located at the ends of the first and second cell distribution conveyors, a first stacking robot that adsorbs cell units on the first cell distribution conveyor and stacks them on the stacking and curing platform, and a second stacking robot that adsorbs cell units on the second cell distribution conveyor and stacks them on the stacking and curing platform.

[0013] Compared with existing technologies, the advantages of this invention's highly versatile and efficient automated battery cell stacking production line are: it can automatically supply and feed various specifications of battery cells before stacking, screen-print conductive adhesive, inspect, stack, and simultaneously stack with dual robotic arms, greatly improving the production efficiency of battery modules. Specifically:

[0014] 1) In the cell feeding screen printing station, a rotary table layout is adopted with two loading stations, one screen printing station and one unloading station. Among the two loading stations, one loading station is responsible for feeding 1 / 12 cell cells, and the other loading station is responsible for feeding 1 / 6 cell cells and 1 / 6 cell cells with solder joints. According to the cell matching quantity requirements of the subsequent station, the corresponding type of cell cells are supplied to the screen printing turntable. After being coated with adhesive by the screen printing mechanism, the cells move to the unloading station, realizing the automatic supply, loading and conductive adhesive coating output of various different cell cells.

[0015] 2) At the cell inspection and matching station, a PL inspection platform is set up at the unloading station corresponding to the screen printing turntable to perform PL inspection in conjunction with vision; then three inspection conveyor lines are configured to automatically convey 1 / 6 cells, 1 / 6 cells with solder joints and 1 / 12 cells respectively. The inspection and loading robot moves the cells from the PL inspection platform to the corresponding inspection conveyor line according to the type of cells. In conjunction with the vision camera set above the inspection conveyor line, the conductive adhesive coating on the cells is inspected.

[0016] 3) Two parallel cell matching conveyor lines are set up at the rear end of the inspection conveyor line. The cell matching and loading robot picks up qualified cells of the corresponding quantity and type on the inspection conveyor line according to the glue line inspection results and the cell matching plan, and then distributes them to the two cell matching conveyor lines. At the same time, a dummy cell feeding unit is set up next to the cell matching conveyor line to realize the automatic supply, glue dispensing and inspection of dummy cells. Then, the cell matching and loading robot distributes them to the two cell matching conveyor lines according to the cell matching plan. Several cell units are placed and transported on the two cell matching conveyor lines to form a battery module.

[0017] 4) At the cell stacking station, two stacking robots are configured corresponding to the two cell delivery lines. The two stacking robots simultaneously pick up the cell units and perform synchronous stacking actions, which greatly improves the efficiency of the cell module stacking process. [Attached Image Description]

[0018] Figure 1 This is a top view of the structure according to an embodiment of the present invention;

[0019] Figure 2 This is a top view of the screen printing station for battery cell feeding in an embodiment of the present invention.

[0020] Figure 3 This is a top view of the battery cell testing and matching station in an embodiment of the present invention;

[0021] The numbers in the image represent:

[0022] 100-Highly versatile and efficient automated cell stacking production line for solar cells;

[0023] 10-Battery cell feeding screen printing station; 11-Screen printing turntable; 12-First feeding conveyor line; 13-Second feeding conveyor line; 14-First screen printing loading robot; 15-Second screen printing loading robot; 16-Screen printing mechanism; 17-First feeding unit; 171-First feeding mechanism; 172-First transfer positioning platform; 173-First loading and adsorption mechanism; 18-Second feeding unit; 181-Second feeding mechanism; 182-Third feeding mechanism; 183-Second transfer positioning platform; 184-Second loading and adsorption mechanism; 185-Third loading and adsorption mechanism; 19-First vision inspection module; 110-Support beam.

[0024] 20-Cell inspection and matching station; 21-PL inspection platform; 22-Second vision inspection module; 23-First inspection conveyor line; 24-Second inspection conveyor line; 25-Third inspection conveyor line; 26-First matching conveyor line; 27-Second matching conveyor line; 28-Inspection loading robot; 29-First matching loading robot; 291-First sub-matching loading robot; 292-Second sub-matching loading robot; 210-Dummy cell feeding unit. 2101-Third transfer and positioning platform, 2102-Carrier transfer module, 2103-Fifth vision inspection module, 2104-Dispensing module, 2105-First handling module, 2106-Transfer platform, 211-Second sheet feeding robot, 2111-Second handling module, 2112-Third handling module, 212-Third vision inspection module, 213-NG box, 214-Fourth vision inspection module, 215-Vision positioning module;

[0025] 30 - Cell stacking station; 31 - Stacking and curing platform; 32 - First stacking robot; 33 - Second stacking robot.

Detailed Implementation Methods

[0026] Example 1:

[0027] Please refer to Figures 1-3 This embodiment is a highly versatile and efficient automatic cell stacking production line 100, which includes a cell feeding and screen printing station 10, a cell testing and stacking station 20, and a cell stacking station 30 arranged in sequence.

[0028] The cell feeding screen printing station 10 is mainly used to supply 1 / 6 cell, 1 / 12 cell and 1 / 6 cell with solder joints, and to coat these cells with conductive adhesive.

[0029] The cell testing and matching station 20 is mainly used to perform various tests on 1 / 6 cells, 1 / 12 cells, and 1 / 6 cells with solder joints, and to distribute them to two matching conveyor lines according to the set matching scheme; at the same time, it supplies 1 / 18 cells, coats them with conductive adhesive, tests them, and then distributes them to two matching conveyor lines according to the set matching scheme.

[0030] The battery cell stacking station 30 mainly uses two robots to perform stacking operations simultaneously. On the stacking platform, the battery modules are stacked and connected by heating to cure conductive adhesive, thus forming battery modules.

[0031] The battery cell feeding and screen printing station 10 includes a screen printing turntable 11, a first loading station, a second loading station, a screen printing station, and a unloading station arranged sequentially around the screen printing turntable 11, a first feeding conveyor line 12 that transports 1 / 12 battery cells to the first loading station, a second feeding conveyor line 13 that transports 1 / 6 battery cells and 1 / 6 battery cells with solder joints to the second loading station, a first screen printing loading robot 14 located at the first loading station that transports battery cells from the first feeding conveyor line 12 to the screen printing turntable 11, a second screen printing loading robot 15 located at the second loading station that transports battery cells from the second feeding conveyor line 13 to the screen printing turntable 11, a screen printing mechanism 16 located at the screen printing station, a first feeding unit 17 that feeds 1 / 12 battery cells, and a second feeding unit 18 that feeds 1 / 6 battery cells and 1 / 6 battery cells with solder joints.

[0032] In this embodiment, the first feeding unit 17 is mainly used to supply 1 / 12-inch battery cells, and the second feeding unit 18 is mainly used to supply 1 / 6-inch battery cells and 1 / 6-inch battery cells with solder joints. This design is based on the fact that the 1 / 6-inch battery cells and the 1 / 6-inch battery cells with solder joints have the same size specifications; while the size of the 1 / 12-inch battery cell is half that of the 1 / 6-inch battery cell, that is, its short side width is the same, but its long side width is half that of the 1 / 6-inch battery cell. Therefore, the 1 / 12-inch battery cells are fed and loaded separately, and on the screen printing turntable 11, two 1 / 12-inch battery cells can be combined to form one 1 / 6-inch battery cell, that is, two 1 / 12-inch battery cells can fill the carrying slot of one 1 / 6-inch battery cell. Therefore, this embodiment can realize the sharing of one screen printing mechanism 16 for battery cells of three different sizes, which reduces equipment costs and improves the functionality of the device while meeting production cycle requirements.

[0033] In actual production, depending on the demand, you can choose to provide all 1 / 6 solar cells, or all 1 / 6 solar cells with solder joints, or all 1 / 12 solar cells, or any combination of 1 / 12 solar cells, 1 / 6 solar cells, and 1 / 6 solar cells with solder joints.

[0034] To ensure the quality of the solar cells before the conductive adhesive is applied, this embodiment includes a first visual inspection module 19 above both the first feeding conveyor line 12 and the second feeding conveyor line 13. Specifically, two sets of first visual inspection modules 19 are installed above both the first feeding conveyor line 12 and the second feeding conveyor line 13. One set of visual inspection modules is used to inspect the appearance of the solar cells, while the other set is used to inspect for defects or microcracks in the solar cells.

[0035] The first feeding conveyor line 12 and the second feeding conveyor line 13 are arranged in parallel.

[0036] The first feeding unit 17 includes a first feeding mechanism 171 disposed between the first feeding conveyor line 12 and the second feeding conveyor line 13, a first transfer and positioning platform 172 disposed between the first feeding conveyor line 12 and the first feeding mechanism 171, and a first feeding and adsorption mechanism 173 spanning the first feeding conveyor line 12 and the first feeding mechanism 171. The first feeding and adsorption mechanism 173 picks up a group of battery cells from the first feeding mechanism 171, places them on the first transfer and positioning platform 172 for secondary positioning, and then precisely transports them to the first feeding conveyor line 12.

[0037] The second feeding unit 18 includes a second feeding mechanism 181 and a third feeding mechanism 182 arranged parallel to the second feeding conveyor line 13, a second transfer positioning platform 183 arranged between the second feeding mechanism 181 and the second feeding conveyor line 13, a second feeding adsorption mechanism 184 spanning the second feeding conveyor line 13 and the second transfer positioning platform 183, and a third feeding adsorption mechanism 185 spanning the third feeding mechanism 182 and the second transfer positioning platform 183.

[0038] The first feeding mechanism 171, the second feeding mechanism 181, and the third feeding mechanism 182 all adopt a material box fixture type feeding method, and the material box fixture is recycled through the conveyor line and the return line. The first feeding adsorption mechanism 173, the second feeding adsorption mechanism 184, and the third feeding adsorption mechanism 185 are all mounted on a support beam 110, but each of them is driven independently.

[0039] The cell inspection and matching station 20 includes a PL inspection platform 21 located at the unloading station, a second vision inspection module 22 located above the PL inspection platform 21, a first inspection conveyor line 23, a second inspection conveyor line 24 and a third inspection conveyor line 25 arranged in parallel, a first matching conveyor line 26 arranged in parallel at the tail of the first inspection conveyor line 23, a second matching conveyor line 27 arranged in parallel at the tail of the third inspection conveyor line 25, an inspection loading robot 28 that transports cells to the corresponding inspection conveyor line according to their type, a first matching loading robot 29 that transports qualified cells from the inspection conveyor line to the matching conveyor line according to the matching scheme, a dummy cell feeding unit 210 arranged in parallel next to the second matching conveyor line 27, and a second matching loading robot 211 that picks up multiple dummy cells from the dummy cell feeding unit 210 and transports them to the matching conveyor line according to the matching scheme.

[0040] The first inspection conveyor line 23 is mainly used for inspecting and conveying 1 / 6 of the solar cells after adhesive dispensing. The second inspection conveyor line 24 is mainly used for inspecting and conveying 1 / 12 of the solar cells after adhesive dispensing. The third inspection conveyor line 25 is mainly used for inspecting and conveying 1 / 6 of the solar cells with solder joints after adhesive dispensing. A third vision inspection module 212 for inspecting the conductive adhesive lines on the solar cells is installed above the first inspection conveyor line 23, the second inspection conveyor line 24, and the third inspection conveyor line 25. NG boxes 213 are installed at the ends of the first inspection conveyor line 23, the second inspection conveyor line 24, and the third inspection conveyor line 25 to collect solar cells that fail inspection.

[0041] A fourth vision inspection module 214 is installed above the first wafer-matching conveyor line 26, the second wafer-matching conveyor line 27, and the second inspection conveyor line 24. This module is used to inspect the appearance of the cells on the wafer-matching conveyor lines, and to detect whether there are any appearance defects such as microcracks or missing corners in the cells during the coating of conductive adhesive and handling process, so as to ensure the quality of the cells before stacking.

[0042] The inspection and loading robot 28 transports the battery cells with the conductive adhesive screen-printed onto the PL inspection platform 21. If the inspection is qualified, the cells are transported to the first inspection conveyor line 23, the second inspection conveyor line 24, or the third inspection conveyor line 25 according to their type. If the inspection is unqualified, the unqualified battery cells are transported to the NG box (not shown in the figure) on the side.

[0043] The first and second cell-matching conveyor lines 26 and 27 are also equipped with NG boxes (not shown in the figure) for collecting defective cells.

[0044] In this embodiment, the first detection conveyor line 23 and the first piece distribution conveyor line 26 are arranged on the same line; the third detection conveyor line 25 and the second piece distribution conveyor line 27 are arranged on the same line.

[0045] In this embodiment, the first wafer loading robot 29 includes a first sub-wafer loading robot 291 and a second sub-wafer loading robot 292. The first sub-wafer loading robot 291 is responsible for adsorbing 1 / 6 battery cells from the first inspection conveyor line 23 and 1 / 6 battery cells with solder joints from the third inspection conveyor line 25, and then placing them onto the first wafer loading conveyor line 26 and the second wafer loading conveyor line 27 respectively according to the wafer loading scheme. The second sub-wafer loading robot 292 is mainly responsible for adsorbing 1 / 12 battery cells from the second inspection conveyor line 24 and placing them onto the first wafer loading conveyor line 26 and the second wafer loading conveyor line 27 respectively according to the wafer loading scheme. In this embodiment, the first piece-feeding conveyor line 26 is positioned on the extension of the first inspection conveyor line 23, and the second piece-feeding conveyor line 27 is positioned on the extension of the third inspection conveyor line 25. A first sub-piece-feeding robot 291 is positioned between the conveying ends of the first and third inspection conveyors 23 and 25, so that it can simultaneously cover the first, second, and third inspection conveyors 25, the first, and second piece-feeding conveyors 26 and 27. A second piece-feeding robot 211 is positioned across the first and second piece-feeding conveyors 26 and 27, with the conveying end of the second inspection conveyor line 24 extending below the second piece-feeding robot 211 and located between the first and second piece-feeding conveyors 26 and 27. A second sub-piece-feeding robot 292 is positioned above the end of the second inspection conveyor line 24 and spans the section between the first and second piece-feeding conveyors 26 and 27. The second sub-cell loading robot 292 can be equipped with one or two independently moving adsorption units according to the cycle requirements. If one unit is set, it will simultaneously pick up two 1 / 12 cell cells from the second detection conveyor line 24 and place one cell from each unit onto the first cell loading conveyor line 26 and the second cell loading conveyor line 27. If two units are set, each unit will pick up one 1 / 12 cell cell from the second detection conveyor line 24 and place it onto the first cell loading conveyor line 26 and the second cell loading conveyor line 27 respectively.

[0046] The first cell loading robot 29 and the second cell loading robot 211 pick up the corresponding number and type of cells according to the set cell distribution scheme and transport them to the first cell loading conveyor line 26 and the second cell loading conveyor line 27. Then, at the end of the first cell loading conveyor line 26 and the second cell loading conveyor line 27, the two stacking robots configured in the cell stacking station 30 perform stacking actions synchronously, which greatly improves the stacking efficiency.

[0047] In this embodiment, a dummy cell feeding unit 210 is provided. In other embodiments, the dummy cell feeding unit 210 may not be provided. If the last column of the battery module uses 1 / 6 battery cells with solder joints as connecting pieces, then dummy cells are not required, and therefore the dummy cell feeding unit 210 is not needed.

[0048] Since the fake cells only appear in the last column of the battery module, and there are 5 fake cells in the last column, the allocation scheme for the fake cells adopts the form of "3+2", that is, 2 fake cells are allocated to the second cell distribution conveyor line 27, and the remaining 3 fake cells are allocated to the first cell distribution conveyor line 26.

[0049] The dummy cell feeding unit 210 includes a feeding station, a secondary positioning station, a receiving station, an inspection station, a dispensing station, and a third loading station arranged in sequence; a third transfer positioning platform 2101 located at the secondary positioning station; a carrier transfer module 2102 that drives the cell pack to move between the receiving station and the loading station; a fifth visual inspection module 2103 located above the inspection station; a dispensing module 2104 located above the dispensing station; a first transport module 2105 whose transfer range covers the section between the feeding station and the receiving station; and a transfer platform 2106 located at the tail of the second inspection conveyor line 24.

[0050] When stacking battery modules, dummy cells can be stacked first or last. If the dummy cells are stacked first, adhesive needs to be applied to them, so a dispensing module 2104 is required. If the dummy cells are stacked last, adhesive does not need to be applied to them, so a dispensing module 2104 is not required. Therefore, in the dummy cell feeding unit 210, the dispensing module 2104 can be selectively set according to requirements.

[0051] The second cell loading robot 211 includes a second transport module 2111 that laterally transfers and transports the cell packs above the loading station to the second cell loading conveyor line 27 or the transfer platform 2106, and a third transport module 2112 that transports the cell packs on the transfer platform 2106 to the first cell loading conveyor line 26.

[0052] The first transport module 2105 picks up a set of dummy sheets at the feeding station and transports them to the third transfer positioning platform 2101. After secondary positioning, they are then transported to the carrier transfer module 2102. The carrier on the carrier transfer module 2102 receives a set of dummy sheets at the receiving station and then moves them to the inspection station. The fifth vision inspection module 2103 inspects their appearance and position. If they are NG (not acceptable), they are returned to the receiving station and picked up by the first transport module 2105 and placed in the NG box. If they are OK, they are moved to the dispensing station. The adhesive is applied by the dispensing module 2104 to coat the edges of the dummy piece with conductive adhesive. Then it returns to the inspection station and the adhesive line is inspected by the fifth vision inspection module 2103. If the inspection is OK, it moves to the third loading station. The second transport module 2111 transports two dummy pieces to the second matching conveyor line 27 and three dummy pieces to the transfer platform 2106. Then the third transport module 2112 transports them to the first matching conveyor line 26, completing the automatic feeding, inspection, dispensing and matching of dummy pieces.

[0053] Above the conveying ends of the first wafer-gathering conveyor line 26 and the second wafer-gathering conveyor line 27, there is also a visual positioning module 215 that takes pictures of the position of the battery cells on the conveyor line, providing a basis for the position information of the subsequent stacking robot to accurately grasp the battery cells.

[0054] The cell stacking station 30 includes a stacking and curing platform 31 located at the ends of a first cell distribution conveyor line 26 and a second cell distribution conveyor line 27; a first stacking robot 32 that adsorbs cell units on the first cell distribution conveyor line 26 and stacks them on the stacking and curing platform 31; and a second stacking robot 33 that adsorbs cell units on the second cell distribution conveyor line 27 and stacks them on the stacking and curing platform 31. In this embodiment, the first stacking robot 32 and the second stacking robot 33 perform stacking operations synchronously.

[0055] During the stacking process: 1) The first stacking robot 32 picks up "3 1 / 6 solar cells with solder joints" and the second stacking robot 33 picks up "2 1 / 6 solar cells with solder joints", and then they are simultaneously placed on the stacking curing platform 31 in a column, with gaps between solar cells in adjacent rows within the same column; 2) Then the first stacking robot 32 picks up "2 1 / 6 solar cells + 1 1 / 12 solar cell" and the second stacking robot 33 picks up "2 1 / 6 solar cells + 1 1 / 12 solar cell", and they are placed on the stacking curing platform 31 in a column, with the two 1 / 12 solar cells located in the top and bottom rows, and the solar cells in adjacent columns having an overlap, with the solar cells in the later column overlapping the solar cells in the previous column. 3) Then the first stacking robot 32 picks up 2 1 / 6 battery cells and the second stacking robot 33 picks up 2 1 / 6 battery cells, and arranges them in a column on the stacking curing platform 31 to form the third column of the battery module; 4) Repeat steps 2)-3) multiple times; 5) Repeat step 2); 6) Repeat steps 1)-5) multiple times; 7) The first stacking robot 32 picks up "3 dummy cells" and the second stacking robot 33 picks up "2 dummy cells", and arranges them in a column on the stacking curing platform 31 to form the last column of dummy battery cell units of the battery module, completing the stacking of the battery module; After curing on the stacking curing platform 31, the battery module forms a whole and is then output to the next workstation.

[0056] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A highly versatile and efficient automated cell stacking production line, characterized in that: It includes a cell feeding and screen printing station (10), a cell testing and matching station (20), and a cell stacking station (30) arranged in sequence. The battery cell feeding screen printing station (10) includes a screen printing turntable (11), a first feeding station, a second feeding station, a screen printing station and an unloading station arranged in sequence around the screen printing turntable (11); The cell inspection and matching station (20) includes a PL inspection platform (21) set at the unloading station, a second vision inspection module (22) set above the PL inspection platform (21), several inspection conveyor lines arranged in parallel, several matching conveyor lines arranged in parallel at the ends of the inspection conveyor lines, an inspection loading robot (28) that transports cells to the corresponding inspection conveyor lines according to their type, and a first matching loading robot (29) that transports qualified cells on the inspection conveyor lines to the corresponding matching conveyor lines according to the matching scheme. The testing conveyor line includes a first testing conveyor line (23), a second testing conveyor line (24) and a third testing conveyor line (25), and the sample distribution conveyor line includes a first sample distribution conveyor line (26) and a second sample distribution conveyor line (27). The cell stacking station (30) includes a stacking curing platform (31) set at the tail of the first cell distribution conveyor line (26) and the second cell distribution conveyor line (27), a first stacking robot (32) that adsorbs cell units on the first cell distribution conveyor line (26) and stacks them on the stacking curing platform (31), and a second stacking robot (33) that adsorbs cell units on the second cell distribution conveyor line (27) and stacks them on the stacking curing platform (31). The battery cell feeding screen printing station (10) further includes a first feeding conveyor line (12) that transports 1 / 12 battery cells to the first loading station side, a second feeding conveyor line (13) that transports 1 / 6 battery cells to the second loading station side, a first screen printing loading robot (14) that moves the battery cells on the first feeding conveyor line (12) to the screen printing turntable (11) at the first loading station, a second screen printing loading robot (15) that moves the battery cells on the second feeding conveyor line (13) to the screen printing turntable (11) at the second loading station, a screen printing mechanism (16) set at the screen printing station, a first feeding unit (17) that realizes the feeding of 1 / 12 battery cells, and a second feeding unit (18) that realizes the feeding of 1 / 6 battery cells.

2. The highly versatile and efficient automated cell stacking production line as described in claim 1, characterized in that: A first vision inspection module (19) is provided above both the first feeding conveyor line (12) and the second feeding conveyor line (13).

3. The highly versatile and efficient automated cell stacking production line as described in claim 2, characterized in that: The first feeding unit (17) includes a first feeding mechanism (171) disposed between the first feeding conveyor line (12) and the second feeding conveyor line (13), a first transfer positioning platform (172) disposed between the first feeding conveyor line (12) and the first feeding mechanism (171), and a first feeding adsorption mechanism (173) whose transfer range covers the area between the first feeding conveyor line (12) and the first feeding mechanism (171).

4. The highly versatile and efficient automated cell stacking production line as described in claim 2, characterized in that: The second feeding unit (18) includes a second feeding mechanism (181) and a third feeding mechanism (182) arranged parallel to the second feeding conveyor line (13), a second transfer positioning platform (183) arranged between the second feeding mechanism (181) and the second feeding conveyor line (13), a second feeding adsorption mechanism (184) covering the area between the second feeding conveyor line (13) and the second transfer positioning platform (183), and a third feeding adsorption mechanism (185) covering the area between the third feeding mechanism (182) and the second transfer positioning platform (183).

5. The highly versatile and efficient automated cell stacking production line as described in claim 1, characterized in that: The cell testing and matching station (20) also includes a dummy cell feeding unit (210) arranged in parallel next to the second matching conveyor line (27) and a second matching loading robot (211) that picks up multiple dummy cells from the dummy cell feeding unit (210) and transports them to the matching conveyor line according to the matching scheme.

6. The highly versatile and efficient automated cell stacking production line as described in claim 1 or 5, characterized in that: A third vision inspection module (212) for inspecting conductive adhesive lines on battery cells is provided above the first inspection conveyor line (23), the second inspection conveyor line (24) and the third inspection conveyor line (25); an NG box (213) is provided at the end of the first inspection conveyor line (23), the second inspection conveyor line (24) and the third inspection conveyor line (25).

7. The highly versatile and efficient automated cell stacking production line as described in claim 1 or 5, characterized in that: A fourth vision inspection module (214) is provided above the first wafer delivery line (26), the second wafer delivery line (27) and the second inspection delivery line (24); NG boxes for collecting unqualified battery cells are also provided at the delivery ends of the first wafer delivery line (26) and the second wafer delivery line (27).

8. The highly versatile and efficient automated cell stacking production line as described in claim 5, characterized in that: The dummy cell feeding unit (210) includes a feeding station, a secondary positioning station, a receiving station, an inspection station and a third loading station arranged in sequence, a third transfer positioning platform (2101) set at the secondary positioning station, a carrier transfer module (2102) that drives the battery cell pack to move between the receiving station and the third loading station, a fifth visual inspection module (2103) set above the inspection station, a first handling module (2105) whose transfer range covers the section between the feeding station and the receiving station, and a transfer platform (2106) set at the tail of the second inspection conveyor line (24).

9. The highly versatile and efficient automated cell stacking production line as described in claim 8, characterized in that: A dispensing station is also provided between the testing station and the third feeding station, and a dispensing module (2104) is provided above the dispensing station.

10. The highly versatile and efficient automated cell stacking production line as described in claim 8, characterized in that: The second cell loading robot (211) includes a second transport module (2111) that laterally transfers and transports the cell packs to the second cell conveyor line (27) or the transfer platform (2106) above the third loading station, and a third transport module (2112) that transports the cell packs on the transfer platform (2106) to the first cell conveyor line (26).

11. The highly versatile and efficient automated cell stacking production line as described in claim 1, characterized in that: A visual positioning module (215) for taking pictures of the position of the battery cells on the conveying line is also provided above the conveying ends of the first wafer conveying line (26) and the second wafer conveying line (27).

Images