Welding module for battery cell and adapter plate

Abstract

The utility model relates to the technical field of battery automatic production equipment, and discloses a battery cell and adapter piece welding module which comprises a logistics line, an adapter piece jig assembling mechanism and a welding mechanism. The logistics line is used for conveying a welding clamp, the welding clamp is used for bearing a battery cell, and the logistics line is provided with an assembling station and a welding station which are sequentially arranged in the conveying direction; the switching piece jig assembling mechanism is arranged on one side of the assembling station and used for magnetically attracting switching piece jigs to the welding clamps located on the assembling station from bottom to top, and the switching piece jigs are used for bearing switching pieces. The welding mechanism is arranged at the welding station and is used for welding the adapter piece positioned in the adapter piece jig and the battery cell positioned in the welding clamp; the technical problems that in the prior art, in the welding process of a battery cell and an adapter piece, due to the fact that the battery cell is frequently carried, the battery cell is prone to deformation, the appearance of the battery cell is prone to damage, and the welding precision of the adapter piece is poor are mainly solved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery automation production equipment, in particular to a welding module for a battery core and an adapter. Background Art

[0002] The battery cell in the prior art usually includes a shell, a battery cell and a top cover, wherein the battery cell has a positive electrode ear and a negative electrode ear led out, and the top cover is provided with a positive electrode column and a negative electrode column. The battery cell is accommodated in the shell, and the top cover seals the opening on the shell. During assembly, the positive electrode ear and the negative electrode ear are usually pre-welded with an adapter plate respectively, and then one of the adapter plates is welded to the positive electrode column, and the other adapter plate is welded to the negative electrode column, so that the top cover can lead out the positive and negative poles of the internal battery cell, so as to realize the function of charging the internal battery cell or discharging the battery cell to the outside by conducting the positive electrode column and the negative electrode column.

[0003] In order to improve the welding efficiency of the tabs and adapters on battery cells, the existing technology usually adopts an automated welding module to achieve this. The existing welding module for welding battery cells and adapters will use clamps to frequently move the battery cells during the work process. Frequent handling of the battery cells by the clamps will cause damage to the appearance of the battery cells, such as battery cell powder loss, battery cell bruises, etc. At the same time, frequent handling of the battery cells will also affect the positioning accuracy of the battery cells, which is prone to battery cell positioning deviation, tab tearing, etc., which has a great impact on the subsequent assembly consistency of the battery cells and is not conducive to ensuring the quality of the product. In addition, the traditional adapter jig has low positioning accuracy, and the adapter jig and the welding fixture are not fixedly connected. It is difficult to ensure the consistency of the assembly accuracy between the adapter jig and the welding fixture, which can easily cause problems such as the adapter being skewed after welding.

[0004] Therefore, there is a need to improve the existing technology.

[0005] The above information is presented as background information only to assist with an understanding of the present disclosure and is not a determination or admission that any of the above may be applicable as prior art with respect to the present disclosure. Utility Model Content

[0006] The utility model provides a welding module for a battery cell and an adapter, which mainly solves the technical problems in the prior art that during the welding process of the battery cell and the adapter, the battery cell is easily deformed, the appearance of the battery cell is easily damaged, and the welding precision of the adapter is poor due to the frequent handling of the battery cell.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A welding module for battery cells and adapters, comprising a logistics line, an adapter jig assembly mechanism, and at least one welding mechanism sequentially arranged along the conveying direction of the logistics line;

[0009] The logistics line is used to transport the welding fixture, and the welding fixture is used to carry the battery cell. The logistics line is provided with assembly stations and welding stations arranged in sequence along the transport direction;

[0010] The adapter jig assembly mechanism is arranged on one side of the assembly station and is used to magnetically attract the adapter jig from bottom to top to the welding fixture located at the assembly station. The adapter jig is used to carry the adapter. The welding mechanism is arranged at the welding station and is used to weld the adapter located in the adapter jig and the battery core located in the welding fixture.

[0011] In one of the technical solutions, the adapter jig assembly mechanism includes a material moving device and an assembly device arranged adjacent to each other;

[0012] The material transfer device is used to pick up the external adapter jig and place the adapter jig on the assembly device, and the assembly device is used to drive the adapter jig upward to be magnetically attracted to the welding fixture located at the assembly station.

[0013] In one of the technical solutions, the material transfer device includes an X-axis module, a Z-axis module, a driver, and a fixture clamp connected in sequence;

[0014] The X-axis module is used to drive the Z-axis module, the driver and the fixture clamp to move together along the X direction. The Z-axis module is used to drive the driver and the fixture clamp to move together along the vertical direction. Two fixture clamps are connected to the driver, and the driver is used to drive the two fixture clamps to move away from each other or towards each other.

[0015] In one of the technical solutions, the assembly device includes a Y-axis module, a Z-axis module, a clamping cylinder and an assembly clamp connected in sequence; the assembly clamp is used to receive and clamp the adapter jig from the material moving device, the Y-axis module is used to drive the Z-axis module, the clamping cylinder and the assembly clamp to move together along the Y direction, the Z-axis module is used to drive the clamping cylinder and the assembly clamp to move along the vertical Z direction, two assembly clamps are connected to the clamping cylinder, the clamping cylinder is used to drive the two clamping cylinders to move away from each other or towards each other, and the assembly clamp moves upward along the Z direction to drive the adapter jig to be magnetically attracted upward to the welding clamp located at the assembly station.

[0016] In one of the technical solutions, the assembly clamp is provided with a horizontally extending support surface and a clamping surface extending upward relative to the support surface, the support surface is used to carry the adapter jig, the clamping surface is used to clamp the side of the adapter jig, and the clamping surface is provided with an avoidance notch that passes through the assembly clamp upward, and the avoidance notch is used to avoid the jig clamp.

[0017] In one of the technical solutions, the welding mechanism includes a Y-axis drive device, a frame and a welding machine connected in sequence;

[0018] The Y-axis driving device is used to drive the frame and the welding machine to move along the Y direction. The welding machine includes a connected lifting mechanism and a welding head. The lifting mechanism is used to drive the welding head to move in the vertical Z direction.

[0019] In one of the technical solutions, the welding module further includes a welding seat mechanism disposed below the welding mechanism;

[0020] The welding seat mechanism includes a first driving device, a second driving device and a welding seat connected in sequence. The first driving device is used to drive the second driving device and the welding seat to move together along the Y direction. The second driving device is used to drive the welding seat to move along the vertical Z direction. The welding seat moves upward to contact the bottom surface of the adapter.

[0021] In one of the technical solutions, the logistics line is provided with a plurality of welding stations arranged in sequence along the conveying direction, the welding mechanism is provided above each welding station, and the welding seat mechanism is provided below each welding station.

[0022] In one of the technical solutions, the adapter jig includes a base plate and a contour plate fixed above the base plate, the contour plate is provided with an upwardly open limit groove, the limit groove is used to accommodate the adapter, the base plate is provided with a magnet placement groove and a positioning hole, the bottom of the limit groove is provided with an avoidance hole that passes through the base plate and the contour plate respectively in the vertical direction, and the avoidance hole is used to avoid the welding seat.

[0023] In one of the technical solutions, the logistics line includes two guide rails, the length directions of the two guide rails point in the X direction and are used to guide the transportation of the welding fixture in the X direction. The two guide rails are arranged at intervals along the Y direction so that there is a gap between the two guide rails, and the gap is used to prevent the welding seat from moving in the vertical direction.

[0024] Compared with the prior art, the welding module for the battery cell and the adapter provided by the present invention has at least the following beneficial effects:

[0025] During operation, the welding fixture with the battery cell is transported by the logistics line. When the welding fixture with the battery cell passes the assembly station, the adapter jig assembly mechanism takes out the adapter jig carrying the adapter from the outside and places the adapter jig on the assembly station, so that the welding fixture can be assembled with the adapter jig at the assembly station by magnetic attraction, so that the position of the adapter relative to the battery cell is more accurate. Then the welding fixture with the battery cell and the adapter jig with the adapter will be transported to the welding station together. At this time, the welding mechanism will weld the adapter in the adapter jig and the battery cell in the welding fixture together. It can be seen from the above that by adopting this technical solution, the battery cells do not need to be moved by robots at least at the assembly station and the welding station, thereby reducing the number of times the battery cells are frequently moved during the welding process with the adapter plate, and eliminating the problems of the battery cell appearance being easily damaged and the battery cell being easily deformed after being clamped by the force. In addition, since the welding fixture and the adapter plate jig are always magnetically attracted together during the welding process of the adapter plate and the tab, this solution can improve the accuracy of the welding between the battery cell and the adapter plate, and the battery cell is not prone to position changes during welding. At the same time, it also prevents phenomena such as the tab tearing, thereby greatly improving the quality of the battery cell and the adapter plate after welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0027] Figure 1 A schematic structural diagram of a welding module for a battery cell and an adapter provided in an embodiment of the present application;

[0028] Figure 2 A schematic structural diagram of a welding fixture provided in an embodiment of the present application;

[0029] Figure 3 A schematic diagram of the structure of the adapter fixture provided in an embodiment of the present application;

[0030] Figure 4 for Figure 3 The adapter fixture shown is assembled to Figure 2 The structural diagram of the welding fixture shown in FIG.

[0031] Figure 5 A schematic diagram of the structure of the adapter fixture assembly mechanism provided in an embodiment of the present application;

[0032] Figure 6 for Figure 5 A partial enlarged view of point B in the middle;

[0033] Figure 7 for Figure 1 A partial enlarged view of point A in the middle;

[0034] Figure 8 A schematic structural diagram of the welding seat mechanism provided in an embodiment of the present application;

[0035] Figure 9 Based on Figure 1 The schematic diagram of the structure after multiple welding mechanisms are set on the welding module shown.

[0036] Reference numerals:

[0037] 1. Logistics line; 12. Assembly station; 13. Welding station; 15. Guide rail; 16. Gap;

[0038] 4. Adapter fixture assembly mechanism; 41. Material transfer device; 411. X-axis module; 412. Z-axis module; 413. Driver; 414. Fixture clamp; 42. Assembly device; 421. Y-axis module; 422. Z-axis module; 423. Clamp cylinder; 424. Assembly clamp; 4241. Support surface; 4242. Clamping surface; 4243. Avoidance gap;

[0039] 6. Welding mechanism; 61. Y-axis drive device; 62. Frame; 63. Welding machine; 631. Lifting mechanism;

[0040] 7. Welding fixture; 8. Adapter fixture; 81. Base plate; 811. Magnet placement slot; 812. Positioning hole; 82. Profiling plate; 821. Limiting slot; 83. Avoidance hole;

[0041] 9. Welding seat mechanism; 91. First driving device; 92. Second driving device; 93. Welding seat;

[0042] 10. Battery cell. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0044] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms, "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0048] This embodiment provides a welding module for battery cells and adapter plates. The welding equipment is used to automatically realize the function of welding the tabs and adapter plates on the battery cells to each other. The welding equipment mainly solves the technical problems in the prior art that during the welding process of battery cells and adapter plates, the battery cells are easily deformed, the battery cell appearance is easily damaged, and the adapter plate welding accuracy is poor due to the frequent handling of the battery cells. The welding equipment also secondarily solves the problem of how to be compatible with the welding of battery cells and adapter plates of various sizes.

[0049] Please also refer to Figures 1 to 4 The welding module of this embodiment mainly includes a logistics line 1, an adapter jig assembly mechanism 4, and at least one welding mechanism 6. Among them, the logistics line 1 is preferably a magnetic-driven logistics line driven by magnetic force. The logistics line 1 is used to transport the welding fixture 7 with the battery cell 10. The welding fixture 7 is used to clamp the battery cell 10. The logistics line 1 is provided with an assembly station 12 and a welding station 13 arranged in sequence along the X direction. The adapter jig assembly mechanism 4 is used to remove the adapter jig 8 from the outside and place the adapter jig 8 on the assembly station 12. The welding fixture 7 will be assembled with the adapter jig 8 at the assembly station 12. Figure 4 This is a structural diagram of the adapter jig 8 being magnetically attracted to the welding fixture 7 from bottom to top. The welding mechanism 6 is arranged above the welding station 13 and is used to weld the adapter in the adapter jig 8 and the battery cell 10 in the welding fixture 7 together.

[0050] More specifically, the working process of the welding module of this embodiment is as follows: when working, the welding fixture 7 with the battery cell 10 is transported by the logistics line 1. When the welding fixture 7 with the battery cell 10 passes the assembly station 12, the adapter jig assembly mechanism 4 takes out the adapter jig 8 carrying the adapter from the outside and places the adapter jig 8 on the assembly station 12, so that the welding fixture 7 can be assembled with the adapter jig 8 at the assembly station 12 by magnetic attraction, so that the position of the adapter relative to the battery cell 10 is more accurate. Then the welding fixture 7 with the battery cell 10 and the adapter jig 8 with the adapter will be transported to the welding station 13 together. At this time, the welding mechanism 6 will weld the adapter in the adapter jig 8 and the battery cell 10 in the welding fixture 7.

[0051] As can be seen from the above paragraph, by adopting the present technical solution, the battery cell 10 does not need to be moved by the robot at least at the assembly station 12 and the welding station 13, thereby reducing the number of times the battery cell 10 is frequently moved during the welding process with the adapter plate, and eliminating the problem that the appearance of the battery cell 10 is easily damaged and the battery cell 10 is easily deformed after being clamped. In addition, since the welding fixture 7 and the adapter plate fixture 8 are always magnetically attracted together during the welding process of the adapter plate and the battery cell tab, the present solution can improve the accuracy of the welding between the battery cell 10 and the adapter plate, and the battery cell 10 is not prone to position changes during welding. At the same time, it also prevents phenomena such as the tab tearing, thereby greatly improving the quality of the battery cell 10 and the adapter plate after welding.

[0052] The above-mentioned mechanisms or devices are described in detail below with reference to the accompanying drawings.

[0053] Please also refer to Figure 1 、 Figure 5 and Figure 6 The adapter jig assembly mechanism 4 includes a material moving device 41 and an assembly device 42, wherein the material moving device 41 is used to pick up the external adapter jig 8 and place the adapter jig 8 on the assembly device 42, and the assembly device 42 is used to drive the adapter jig 8 upward to be magnetically attracted to the welding fixture 7 located at the assembly station 12.

[0054] Among them, the material moving device 41 includes an X-axis module 411, a Z-axis module 412, a driver 413 and a jig clamp 414 connected in sequence; wherein the driver 413 is connected to two jig clamps 414, and the driver 413 is used to drive the two jig clamps 414 to move away from each other or towards each other. When the two jig clamps 414 move towards each other and approach each other, the two jig clamps 414 are used to jointly clamp the adapter jig 8. When the two jig clamps 414 move away from each other and move away from each other, the two jig clamps 414 are used to release the adapter jig 8. During operation, the driver 413 drives the two jig jaws 414 to clamp the external adapter jig 8. Then, the X-axis module 411 drives the Z-axis module 412, the driver 413, and the two jig jaws 414 to move together in the X direction, so that the adapter jig 8 clamped by the two jig jaws 414 is located above the assembly device 42. Then, the Z-axis module 412 drives the driver 413 and the jig jaws 414 to move together in the vertical direction downward, so that the adapter jig 8 clamped by the two jig jaws 414 can be placed downward on the assembly device 42. Among them, both the X-axis module 411 and the Z-axis module 412 can be selected from screw modules, synchronous belt modules, or linear motors.

[0055] Among them, the assembly device 42 includes a Y-axis module 421, a Z-axis module 422, a clamping cylinder 423 and an assembly clamping jaw 424 connected in sequence. Two assembly clamping jaws 424 are connected to the clamping cylinder 423. The clamping cylinder 423 is used to drive the two clamping jaws 423 to move away from each other or towards each other. When the two assembly clamping jaws 424 move towards each other and approach each other, the two assembly clamping jaws 424 are used to jointly clamp the adapter jig 8. When the two assembly clamping jaws 424 move away from each other and move away from each other, the two jig clamps 414 are used to release the adapter jig 8. During operation, the clamping cylinder 423 drives the assembly clamping claw 424 to clamp the external adapter jig 8, and then the Y-axis module 421 drives the Z-axis module 422, the clamping claw 423 and the assembly clamping claw 424 to move together along the Y direction, so that the adapter jig 8 clamped by the assembly clamping claw 424 moves to the bottom of the assembly station 12, and then the Z-axis module 422 drives the clamping claw 423 and the assembly clamping claw 424 to move upward along the vertical Z direction. The assembly clamping claw 424 moves upward along the Z direction to drive the clamped adapter jig 8 to be magnetically attracted upward to the welding fixture 7 located at the assembly station 12, so that the adapter jig 8 and the welding fixture 7 are magnetically attracted together. The magnetic force of the adapter jig 8 and the welding fixture 7 needs to be greater than 5KG to ensure that the adapter jig 8 will not fall down during the welding process.

[0056] See also Figure 6The assembly jaw 424 is provided with a horizontally extending support surface 4241 and a clamping surface 4242 extending upward relative to the support surface 4241, wherein the support surface 4241 is used to carry the adapter jig 8 to ensure that the adapter jig 8 does not fall downward, and the clamping surface 4242 is used to clamp the side of the adapter jig 8, and the clamping surface 4242 is provided with an avoidance notch 4243 that passes through the assembly jaw 424 upward. At the same time, the avoidance notch 4243 is provided to avoid the jig jaw 414, so that the jig jaw 414 can place the adapter jig 8 on the assembly jaw 424 from top to bottom.

[0057] See also Figure 3 The adapter jig 8 specifically includes a base plate 81 and a profiling plate 82. The profiling plate 82 is fixed to the top of the base plate 81. The profiling plate 82 is provided with a limiting groove 821 that is open upward. This limiting groove 821 is used to accommodate an adapter, which plays a role in precisely positioning the adapter. Preferably, two limiting grooves 821 are provided on the profiling plate 82, one of which is used to accommodate the adapter welded to the positive ear of the battery cell 10, and the other limiting groove 821 is used to accommodate the adapter welded to the negative ear of the battery cell 10. A magnet placement groove 811 and a positioning hole 812 are provided on the base plate 81. By fixing the magnet in the magnet placement groove 811, it is convenient to realize the mutual magnetic attraction between the adapter jig 8 and the welding fixture 7. By setting the positioning hole 812, the accuracy of the position of the adapter jig 8 on the welding fixture 7 can be improved, and the accuracy of subsequent welding of the adapter and the battery cell can be improved. Specifically, in the production process of power batteries, in order to reduce the impact of metal foreign matter on battery performance, objects that are usually in contact with battery production auxiliary materials are all non-metallic. The material needs to have high strength to avoid deformation of parts, which leads to poor output products. Therefore, the profiling plate 82 is preferably made of PEEK, POM, PEKC or other polyaryletherketone materials. Such materials have both rigidity and toughness. When the rigidity is the best, the toughness is not the lowest. The weight itself is light and the mechanical properties are good. In addition, the bottom of the limiting groove 821 is provided with an avoidance hole 83 that passes through the bottom plate 81 and the profiling plate 82 in sequence. The welding seat below can enter smoothly from the avoidance hole 83 to meet the use requirements of ultrasonic welding. When the battery cell 10 is changed, the shape of the adapter will change. At this time, only the corresponding profiling plate 82 needs to be replaced.

[0058] Please also refer to Figure 1 、 Figure 7 and Figure 8The welding mechanism 6 specifically includes a Y-axis drive device 61, a frame 62, and a welder 63, which are connected in sequence. The Y-axis drive device 61 is used to drive the frame 62 and the welder 63 to move together in the Y direction, so that the welder 63 can respectively weld two adapter plates spaced apart in the Y direction to the tabs on the battery cell. At the same time, because the welder 63 can adjust its position in the Y direction under the drive of the Y-axis drive device 61, the welder 63 can also be compatible with welding operations of various battery cells 10 with different sizes in the Y direction. Among them, the welder 63 is conventional technology and specifically includes a connected lifting mechanism 631 and a welding head (not shown in the figure). The lifting mechanism 631 is used to drive the welding head to move in the vertical Z direction to accommodate welding operations of battery cells 10 with different thicknesses. In other words, the welding mechanism 6 of this structure can be compatible with welding operations of various battery cells 10 sizes in both the Y and Z directions. Among them, the Y-axis drive device 61 and the lifting mechanism 631 can both be screw modules, linear motors, or synchronous belt modules, etc.

[0059] Please refer to the Figure 1 、 Figure 7 and Figure 8 The welding mechanism 6 of this embodiment is preferably an ultrasonic welding mechanism. In addition to the welding head, ultrasonic welding also requires a welding seat. Therefore, the welding module of this embodiment also includes a welding seat mechanism 9 arranged below the welding mechanism 6. The welding seat mechanism 9 specifically includes a first driving device 91, a second driving device 92 and a welding seat 93 connected in sequence. During welding, the second driving device 92 drives the welding seat 93 to move upward along the vertical Z direction, so that the welding seat 93 passes through the avoidance hole 83 upward and contacts the bottom surface of the adapter. Only through the combination of the welding seat 93 and the welding head can the adapter be welded to the tab on the battery cell 10 by ultrasonic welding. The first drive device 91 is used to drive the second drive device 92 and the welding seat 93 to move together in the Y direction, so that the welding seat 93 can respectively abut the bottom surface of two adapter plates spaced apart in the Y direction, so that the two adapter plates can be welded to the two tabs on the battery cell. At the same time, because the welding seat 93 can be adjusted in the Y direction under the drive of the first drive device 91, it can also be compatible with welding operations of various battery cells 10 with different sizes in the Y direction. The first drive device 91 and the second drive device 92 can be a screw module, a synchronous belt module, a linear motor, etc.

[0060] Please refer again Figure 7The logistics line 1 includes two guide rails 15, the length directions of the two guide rails 15 point to the X direction and are used to guide the welding fixture 7 in the X direction, thereby improving the transportation accuracy of the welding fixture 7. In addition, the two guide rails 15 are arranged at intervals along the Y direction, so that there is a gap 16 between the two guide rails 15. This gap 16 is used to avoid the above-mentioned welding seat 93 from moving in the vertical direction, so that the welding seat 93 can contact the bottom surface of the adapter when moving upward.

[0061] See also Figure 9 Preferably, a plurality of welding stations 13 are arranged at intervals along the X direction on the logistics line 1 of this embodiment, and the above-mentioned welding mechanism 6 is provided above each welding station 13, and the above-mentioned welding seat mechanism 9 is provided below each welding station 13, so as to realize ultrasonic welding operations at multiple stations at the same time, thereby greatly improving the welding efficiency of the battery cell 10 and the adapter.

[0062] The above is merely a preferred embodiment of the present invention and only specifically describes the technical principles of the present invention. These descriptions are intended only to explain the principles of the present invention and should not be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention, as well as other specific embodiments of the present invention that can be imagined by those skilled in the art without inventive effort, shall be included within the scope of protection of the present invention.

Claims

1. A welding module for a battery cell and an adapter, characterized in that: It comprises a logistics line (1), an adapter jig assembly mechanism (4), and at least one welding mechanism (6) sequentially arranged along the conveying direction of the logistics line (1); The logistics line (1) is used to transport a welding fixture (7), and the welding fixture (7) is used to carry a battery cell. The logistics line (1) is provided with assembly stations (12) and welding stations (13) arranged in sequence along the transport direction. The adapter jig assembly mechanism (4) is arranged at one side of the assembly station (12) and is used to magnetically attract the adapter jig (8) from bottom to top onto the welding fixture (7) located at the assembly station (12); the adapter jig (8) is used to carry the adapter; the welding mechanism (6) is arranged at the welding station (13) and is used to weld the adapter in the adapter jig (8) and the battery core in the welding fixture (7).

2. The welding module of the battery cell and the adapter according to claim 1, characterized in that: The adapter jig assembly mechanism (4) comprises a material moving device (41) and an assembly device (42) arranged adjacent to each other; The material transfer device (41) is used to pick up the external adapter jig (8) and place the adapter jig (8) on the assembly device (42), and the assembly device (42) is used to drive the adapter jig (8) to be magnetically attracted upward to the welding fixture (7) located at the assembly station (12).

3. The welding module of the battery cell and the adapter according to claim 2, characterized in that: The material transfer device (41) includes an X-axis module (411), a Z-axis module (412), a driver (413), and a fixture clamp (414) that are connected in sequence; The X-axis module (411) is used to drive the Z-axis module (412), the driver (413) and the fixture clamp (414) to move together in the X direction, the Z-axis module (412) is used to drive the driver (413) and the fixture clamp (414) to move together in the vertical direction, the driver (413) is connected to two fixture clamps (414), and the driver (413) is used to drive the two fixture clamps (414) to move away from each other or towards each other.

4. The welding module of the battery cell and the adapter according to claim 3, characterized in that: The assembly device (42) includes a Y-axis module (421), a Z-axis module (422), a clamping cylinder (423) and an assembly clamping claw (424) connected in sequence; the assembly clamping claw (424) is used to receive and clamp the adapter jig (8) from the material transfer device (41), the Y-axis module (421) is used to drive the Z-axis module (422), the clamping cylinder (423) and the assembly clamping claw (424) to move together along the Y direction, and the Z-axis module (421) is used to drive the Z-axis module (422), the clamping cylinder (423) and the assembly clamping claw (424) to move together along the Y direction. 22) is used to drive the clamping cylinder (423) and the assembly clamping claw (424) to move in the vertical Z direction, the clamping cylinder (423) is connected to two assembly clamping claws (424), the clamping cylinder (423) is used to drive the two clamping cylinders (423) to move in opposite directions or in opposite directions, and the assembly clamping claw (424) moves upward in the Z direction to drive the adapter fixture (8) to be magnetically attracted upward to the welding fixture (7) located at the assembly station (12).

5. The welding module of the battery cell and the adapter according to claim 4, characterized in that: The assembly clamp (424) is provided with a horizontally extending support surface (4241) and a clamping surface (4242) extending upward relative to the support surface (4241), the support surface (4241) is used to carry the adapter jig (8), the clamping surface (4242) is used to clamp the side of the adapter jig (8), and the clamping surface (4242) is provided with an avoidance notch (4243) that passes through the assembly clamp (424) upward, and the avoidance notch (4243) is used to avoid the jig clamp (414).

6. The welding module of the battery cell and the adapter according to claim 1, characterized in that: The welding mechanism (6) comprises a Y-axis driving device (61), a frame (62) and a welding machine (63) connected in sequence; The Y-axis driving device (61) is used to drive the frame (62) and the welding machine (63) to move together along the Y direction. The welding machine (63) includes a connected lifting mechanism (631) and a welding head. The lifting mechanism (631) is used to drive the welding head to move in the vertical Z direction.

7. The welding module of the battery cell and the adapter according to claim 6, characterized in that: The welding module further comprises a welding seat mechanism (9) arranged below the welding mechanism (6); The welding seat mechanism (9) includes a first driving device (91), a second driving device (92) and a welding seat (93) connected in sequence, wherein the first driving device (91) is used to drive the second driving device (92) and the welding seat (93) to move together along the Y direction, and the second driving device (92) is used to drive the welding seat (93) to move along the vertical Z direction, and the welding seat (93) moves upward to contact the bottom surface of the adapter.

8. The welding module of the battery cell and the adapter according to claim 7, characterized in that: The logistics line (1) is provided with a plurality of welding stations (13) sequentially arranged at intervals along the conveying direction, the welding mechanism (6) is provided above each welding station (13), and the welding seat mechanism (9) is provided below each welding station (13).

9. The welding module of the battery cell and the adapter according to claim 1, characterized in that: The adapter jig (8) comprises a base plate (81) and a profiling plate (82) fixed above the base plate (81); the profiling plate (82) is provided with an upwardly open limiting groove (821); the limiting groove (821) is used to accommodate the adapter; the base plate (81) is provided with a magnet placement groove (811) and a positioning hole (812); the bottom of the limiting groove (821) is provided with an avoidance hole (83) that passes through the base plate (81) and the profiling plate (82) in a vertical direction respectively; the avoidance hole (83) is used to avoid the welding seat (93).

10. The welding module of the battery cell and the adapter according to claim 7, characterized in that: The logistics line (1) includes two guide rails (15), the length directions of the two guide rails (15) point to the X direction and are used for guiding the welding fixture (7) in the X direction. The two guide rails (15) are spaced apart along the Y direction so that there is a gap (16) between the two guide rails (15), and the gap (16) is used to prevent the welding seat (93) from moving in the vertical direction.

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