A magnetic suspension pre-point welding ring line all-in-one machine and battery assembly system

Abstract

The utility model discloses a kind of magnetic levitation pre-spot welding ring line integrated machine and battery assembly system, including magnetic levitation conveying production line, still including the top cover press-fitting station, the cell step gap detection station, the pre-electric welding station and the jig dust removal station that top cover press-fitting station, the cell step gap detection station, the pre-electric welding station and the jig dust removal station are sequentially spaced along the conveying direction of magnetic levitation conveying production line;The magnetic levitation conveying production line is arranged in annular shape, and the steering corner position of the magnetic levitation conveying production line is provided with a rotating station assembly.This application utilizes magnetic levitation conveying production line, and top cover press-fitting station, the cell step gap detection station, the pre-electric welding station and the jig dust removal station are arranged in annular shape along conveying direction, so that cell assembly middle section realizes super-speed stable production, greatly reduces the floor area of equipment, annular assembly line type design, work station mechanical structure etc. Arranged in the two sides of assembly line provides the greatest convenience for the maintenance of equipment later period, while reducing the distance of personnel operation path, reducing the personnel configuration of on-site operation.

Description

Technical Field

[0001] This utility model relates to the field of battery assembly technology, specifically to a magnetic levitation pre-spot welding ring integrated machine and a battery assembly system. Background Technology

[0002] With the development of the electronics industry, the application range of prismatic blade batteries is becoming increasingly wide. For assembly lines of prismatic blade batteries, improving assembly speed has become an industry consensus. However, traditional equipment has reached its design bottleneck and cannot meet the demand for increased production capacity of ultra-high-speed assembly lines.

[0003] Currently, traditional press-fitting and pre-spot welding integrated machines for prismatic battery assembly lines generally suffer from several pain points:

[0004] Firstly, most high-speed production lines in the industry achieve high capacity by stacking more workstations. At the same time, the transfer of products between workstations also becomes a limiting factor in assembly speed. In addition, the equipment occupies a large area, and the workstations and stations are numerous and densely distributed, making maintenance and repair inconvenient.

[0005] Secondly, the OEE of individual machines and the OEE of the entire line are low, the ramp-up cycle of the assembly line is particularly long, and the equipment under the traditional design concept has reached a bottleneck, making equipment iteration and innovation inevitable. Utility Model Content

[0006] The technical problem to be solved by this utility model is: how to reduce the floor space occupied by mechanical tooling.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0008] A magnetic levitation pre-spot welding ring line integrated machine includes a magnetic levitation conveyor production line, and also includes a top cover pressing station, a cell step gap detection station, a pre-welding station and a fixture dust removal station arranged sequentially and at intervals along the conveying direction of the magnetic levitation conveyor production line.

[0009] The magnetic levitation conveyor production line is arranged in a ring shape, and a rotating station component is set at the turning corner of the magnetic levitation conveyor production line.

[0010] This application utilizes a magnetic levitation conveyor production line, and arranges the top cover pressing station, cell step gap detection station, pre-welding station, and jig dust removal station in a ring-shaped interval according to the conveying direction. This enables ultra-high-speed and stable production in the middle section of cell assembly, greatly reducing the equipment's footprint. The ring-shaped assembly line design, along with the use of rotating station components for transfer between stations and the arrangement of station mechanical structures, provides maximum convenience for later maintenance and repair. At the same time, it reduces the distance of personnel working and the number of on-site operators, achieving a significant improvement in the OEE of single machines and the entire line.

[0011] As a further embodiment of this utility model: the rotary workstation assembly includes rotary workstation one, rotary workstation two, rotary workstation three and rotary workstation four with the same structure.

[0012] As a further embodiment of this utility model: a four-axis robot for loading is provided between the top cover pressing station and the fixture dust removal station, and a four-axis robot for unloading is provided between the fixture dust removal station and the pre-welding station.

[0013] As a further embodiment of this utility model: the top cover pressing station includes a support frame, the top of the support frame is slotted, and a centering and positioning cylinder for limiting the battery cell is set outside the slot. The output end of the centering and positioning cylinder is connected to an inclined battery cell positioning plate. A pressing cylinder is set on the top of the support frame and directly above the slot. The output end of the pressing cylinder is connected to the pressing plate.

[0014] As a further embodiment of this utility model: the cell step gap detection station includes a long side step gap detection station and a short side step gap detection station.

[0015] As a further embodiment of this utility model: the long side step gap detection station includes a long side support, a long side straight module and a long side profiler. At least two sets of long side profilers are provided on the long side support and directly above the magnetic levitation conveyor production line. The long side profilers are installed on the long side support through the long side straight module.

[0016] As a further embodiment of this utility model: the short side step gap detection station includes a short side support, a short side profiler, and a short side straight module. At least two sets of short side profilers are provided on the short side support and directly above the magnetic levitation conveyor production line. The short side profilers are installed on the short side support through the short side straight module.

[0017] As a further embodiment of this utility model: the pre-welding station includes a galvanometer linear module, the output direction of which is consistent with the output direction of the magnetic levitation conveyor production line, and a welding head lifting module is provided on the output end side of the galvanometer linear module, and the output end of the welding head lifting module is connected to the galvanometer welding head located directly above the magnetic levitation conveyor production line.

[0018] As a further embodiment of this utility model: the fixture dust removal station includes a dust removal support frame, and a lifting module is installed on one side of the dust removal support frame. The output end of the lifting module is connected to the dust removal cavity located directly above the magnetic levitation conveyor production line.

[0019] This utility model also discloses a battery assembly system, including the aforementioned magnetic levitation pre-spot welding ring integrated machine.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] First, this application greatly reduces the footprint of the equipment. The circular assembly line design makes maintenance and repair more convenient. The mechanical structure of the workstations, auxiliary materials and NG discharge are arranged on both sides of the assembly line, which provides maximum convenience for the later maintenance and repair of the equipment. At the same time, it reduces the distance of personnel working and reduces the number of on-site operators.

[0022] Secondly, this application integrates magnetic levitation transportation technology with a minimalist design concept, and through innovative design, it achieves a 20% reduction in equipment investment costs, which greatly reduces the equipment investment costs for enterprises.

[0023] Finally, the simplified design of the equipment mechanism modules in this application, combined with the integrated battery cell clamping fixture and magnetic levitation transportation technology, enables the processing of various functional modules, resulting in a significant improvement in the OEE of single-machine equipment and the entire production line. This reduces the ramp-up period for later equipment entry and ensures stable and efficient production.

[0024] This application introduces magnetic levitation transportation technology for the design of ultra-high-speed production lines. After gaining a deep understanding of the characteristics of battery cell assembly lines, it innovatively and disruptively redesigns existing battery cell assembly lines by adopting an integrated design of conveyor jig transportation and processing. This maximizes the high flexibility, intelligence, modularity, high speed, and high acceleration characteristics of the magnetic levitation system, achieving an extremely simplified design for ultra-high-speed assembly lines. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the magnetic levitation pre-spot welding ring integrated machine according to an embodiment of the present invention;

[0026] Figure 2 This is a top view of the magnetic levitation pre-spot welding ring integrated machine according to an embodiment of the present invention;

[0027] Figure 3 This is a schematic diagram of the long-side step gap detection station and the short-side step gap detection station according to an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the structure of the dust removal station of the fixture in an embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the pre-welding station structure according to an embodiment of the present invention;

[0030] Figure 6 This is a schematic diagram of the top cover pressing station in an embodiment of the present invention;

[0031] Figure 7 This is a front view of the top cover pressing station in an embodiment of this utility model;

[0032] Figure 8This is an enlarged view of the battery cell clamping fixture according to an embodiment of the present invention;

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Four-axis loading robot; 2. Battery cell clamping fixture; 3. Top cover pressing station; 4. Rotary station one; 5. Long side step gap inspection station; 6. Short side step gap inspection station; 7. Rotary station two; 8. Pre-welding station; 9. Unloading station; 10. Four-axis unloading robot; 11. Rotary station three; 12. Fixture dust removal station; 13. Rotary station four;

[0035] 31. Support frame; 32. Centering and positioning cylinder; 33. Lifting guide rod; 34. Press-fitting electric cylinder; 35. Battery cell positioning plate;

[0036] 51. Long side support frame; 52. Long side straight line module; 53. Long side profiler;

[0037] 61. Short side support; 62. Short side profiler; 63. Short side straight line module;

[0038] 81. Profile bracket; 82. Galvanometer welding head one; 83. Galvanometer welding head two; 84. Welding head lifting module; 85. Galvanometer linear module;

[0039] 121. Dust removal support frame; 122. Lifting module; 123. Dust removal chamber. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0041] Example 1

[0042] Reference Figure 1 and Figure 2 A magnetic levitation pre-spot welding ring line integrated machine includes a magnetic levitation conveyor production line, a four-axis robot for feeding 1, a battery cell clamping fixture 2, a top cover pressing station 3, a rotating station 1 4, a long side step gap detection station 5, a short side step gap detection station 6, a rotating station 2 7, a pre-welding station 8, a material unloading station 9, a four-axis robot for unloading 10, a rotating station 3 11, a fixture dust removal station 12, and a rotating station 4 13;

[0043] The magnetic levitation conveyor production line is arranged in a ring shape and connected end to end. The four-axis loading robot 1, the top cover pressing station 3, the long side step gap detection station 5, the short side step gap detection station 6, the pre-welding station 8, the unloading station 9, the unloading four-axis robot 10, and the fixture dust removal station 12 are arranged sequentially around or outside the magnetic levitation conveyor production line according to the conveying sequence of the conveyor line. Rotary stations 1-4, 2-7, 3-11, and 4-13 are installed at the four corners of the ring-shaped magnetic levitation conveyor production line for the turning of the battery cell clamping fixture 2.

[0044] Reference Figure 8 The battery cell clamping fixture 2 includes a fixture base (not shown in the figure), and a magnetic levitation mover connected to the magnetic levitation conveyor production line is set at the bottom of the fixture base. Clamps are set on both sides of the top of the fixture base. The two sets of clamps are respectively connected to the linear module in the X direction and the linear module in the Y direction, which are used to adjust the position of the clamps in the X and Y directions to adapt to the position of the battery cell. During the operation, the magnetic levitation conveyor production line can drive the battery cell clamping fixture 2 to pass through the top cover pressing station 3, the long side step gap detection station 5, the short side step gap detection station 6, the pre-welding station 8, the unloading station 9 and the fixture dust removal station 12 along the production line for corresponding processing.

[0045] Reference Figure 1 Both the loading four-axis robot 1 and the unloading four-axis robot 10 adopt conventional loading and unloading robots in the field. This application has not made any improvements to them, so the detailed principle will not be described in detail. The loading four-axis robot 1 can pick up the battery cells and load them onto the battery cell clamping fixture 2. The unloading four-axis robot 10 can pick up the battery cells on the battery cell clamping fixture 2 and unload them.

[0046] Reference Figure 6 and Figure 7 The top cover pressing station 3 includes a support frame 31, a centering and positioning cylinder 32, a lifting guide rod 33, a pressing electric cylinder 34, and a cell positioning plate 35. The top of the support frame 31 is slotted, and two sets of symmetrical centering and positioning cylinders 32 are set outside the slot to limit the long side of the cell. The output end of the centering and positioning cylinder 32 is connected to the inclined cell positioning plate 35. When the cell moves between the two cell positioning plates 35, the centering and positioning cylinder 32 can drive the cell positioning plate 35 to move until the two cell positioning plates 35 squeeze and limit the cell.

[0047] Reference Figure 6A support plate is provided on the top of the support frame 31 and directly above the groove. A pressing electric cylinder 34 is provided on the top of the support plate. The output end of the pressing electric cylinder 34 is connected to the pressing plate located below the support plate. Under the drive of the pressing electric cylinder 34, the pressing plate can be moved down until the top cover of the battery cell is pressed. The top of the pressing plate is also provided with a lifting guide rod 33 connected to the support plate. The lifting guide rod 33 is used to ensure the accurate downward movement of the pressing plate.

[0048] Reference Figure 6 Rotary workstation 1 (4), rotary workstation 2 (7), rotary workstation 3 (11), and rotary workstation 4 (13) have the same structure. Taking rotary workstation 1 (4) as an example, a base is set at the bottom of the rotary workstation, a rotary motor is set at the bottom of the base, and a magnetic levitation conveyor line in the shape of a cross is set at the top of the base. When the battery cell is transported from the magnetic levitation conveyor line to rotary workstation 1 (4), the rotation direction of the rotary motor at the bottom can be used to adjust the conveying direction of the battery cell clamping fixture 2.

[0049] Reference Figure 3 The long-side step gap detection station 5 detects the height of the long-side step and the gap between the aluminum shell and the top cover. Specifically, it includes a long-side support frame 51, a long-side straight module 52, and a long-side profiler 53. At least two sets of long-side profilers 53 are provided on the long-side support frame 51 and directly above the magnetic levitation conveyor line. This application provides two sets, which can simultaneously detect the long sides of two sets of battery cells, improving efficiency by 50%. Of course, three or more sets can also be set, depending on the actual situation. This application only provides one implementation direction. The long-side profiler 53 is installed on the long-side support frame 51 through the long-side straight module 52. The long-side straight module 52 can adjust the long-side support frame 51 to move along the conveying direction of the magnetic levitation conveyor line. During the movement, the profile detection of the long-side step gap of the battery cell can be performed.

[0050] Reference Figure 3 The short-side step gap detection station 6 detects the height of the short-side step and the gap between the aluminum shell and the top cover. Specifically, it includes a short-side support 61, a short-side profiler 62, and a short-side linear module 63. At least two sets of short-side profilers 62 are installed on the short-side support 61 and directly above the magnetic levitation conveyor line. The two sets of short-side profilers 62 are installed on both sides of the output end of the short-side linear module 63, and the short-side linear module 63 is installed on the short-side support 61. The short-side linear module 63 can drive the two sets of short-side profilers 62 to move perpendicular to the conveying direction of the magnetic levitation conveyor line to adapt to the short side of the battery cell. During the movement, the profile detection of the gap between the two short-side steps of the same battery cell can be performed simultaneously.

[0051] Reference Figure 3The pre-welding station 8 performs pre-spot welding on the top cover of the battery cell; specifically, it includes a profile bracket 81, a galvanometer welding head 1 82, a galvanometer welding head 2 83, a welding head lifting module 84, and a galvanometer linear module 85. The bottom two sides of the galvanometer linear module 85 are connected to the profile bracket 81. The output direction of the galvanometer linear module 85 is consistent with the output direction of the magnetic levitation conveyor production line. Two sets of welding head lifting modules 84 are set on the output end side of the galvanometer linear module 85, and the output ends of the two sets of welding head lifting modules 84 are connected to the galvanometer welding head 1 82 and the galvanometer welding head 2 83 located directly above the magnetic levitation conveyor production line.

[0052] Reference Figure 4 The fixture dust removal station 12 includes a dust removal support frame 121, a lifting module 122, and a dust removal chamber 123. The dust removal support frame 121 is placed outside the magnetic levitation conveyor production line. The lifting module 122 is installed on one side of the top of the dust removal support frame 121. The output end of the lifting module 122 is connected to the dust removal chamber 123 located directly above the magnetic levitation conveyor production line. The bottom of the dust removal chamber 123 is provided with a dust removal port, and the top is provided with a dust removal connection port for connecting an external dust removal pump.

[0053] Example 2

[0054] This embodiment also discloses a battery assembly system, including the magnetic levitation pre-spot welding ring integrated machine described in Embodiment 1.

[0055] The specific operating principle of this application is as follows: First, the battery cell is positioned and pressed into place with the aluminum shell and the top cover at the top cover pressing station 2. Then, it enters the long side step gap detection station 5 to detect the long side step gap. Next, it enters the short side step gap detection station 6 to detect the short side step gap. Then, it enters the pre-welding station 8 for welding. Finally, the material is unloaded, and the empty fixture enters the fixture dust removal station 12 for dust removal, which completes the process and allows the next step to proceed.

[0056] Specifically, the four-axis loading robot 1 picks up battery cells from the logistics line and places them on the battery cell clamping fixture 2. Then, the top cover pressing station 3 positions and presses the top cover of the battery cell. After pressing, the fixture holds the top cover of the battery cell and continues to the rotating station 4, where the fixture is rotated and cut off. It then continues to the long side step gap detection station 5 to detect the height of the long side step and the gap between the aluminum shell and the cover plate. Next, it moves to the short side step gap detection station 6 to detect the height of the short side step and the gap between the aluminum shell and the cover plate. If the detection fails, the battery cell is removed. If the detection passes, it proceeds to the pre-welding station 8 for the next welding step. During the process, the robot moves to the rotating station 2 (7) to rotate and cut off the moving part of the circulating jig, and to the pre-spot welding station 8 to pre-spot weld the battery cell, i.e., to spot weld the top cover. Then it moves to the unloading station 9, where the processed battery cell jig is unlocked and the unloading four-axis robot 10 grabs the battery cell in the unlocked jig for unloading and transports it to the unloading logistics line. Then the empty jig moves to the rotating station 3 (11) to rotate and cut off the jig, and then moves to the jig dust removal station 12 to remove dust from the empty jig. Finally, it moves to the rotating station 4 (13) to rotate and cut off the jig. The empty jig returns to the battery cell loading station to start the next round of product processing, and the cycle repeats.

[0057] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A magnetic levitation pre-spot welding ring line integrated machine, comprising a magnetic levitation conveyor production line, characterized in that, It also includes a top cover pressing station, a cell step gap detection station, a pre-welding station, and a fixture dust removal station, which are arranged at intervals along the conveying direction of the magnetic levitation conveyor production line. The magnetic levitation conveyor production line is arranged in a ring shape, and a rotating station component is set at the turning corner of the magnetic levitation conveyor production line.

2. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 1, characterized in that: The rotary workstation assembly includes three rotary workstations with identical structures: Rotary Workstation 1, Rotary Workstation 2, Rotary Workstation 3, and Rotary Workstation 4.

3. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 1, characterized in that: A four-axis robot for loading is installed between the top cover pressing station and the fixture dust removal station, and a four-axis robot for unloading is installed between the fixture dust removal station and the pre-welding station.

4. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 1, characterized in that: The top cover pressing station includes a support frame with a slot at the top and a centering and positioning cylinder for limiting the battery cell is set outside the slot. The output end of the centering and positioning cylinder is connected to an inclined battery cell positioning plate. A pressing cylinder is set at the top of the support frame and directly above the slot, and the output end of the pressing cylinder is connected to the pressing plate.

5. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 1, characterized in that: The cell step gap detection station includes a long side step gap detection station and a short side step gap detection station.

6. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 5, characterized in that: The long-side step gap detection station includes a long-side support frame, a long-side straight module, and a long-side profiler. At least two sets of long-side profilers are installed on the long-side support frame and directly above the magnetic levitation conveyor production line. The long-side profilers are installed on the long-side support frame through the long-side straight module.

7. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 5, characterized in that: The short-side step gap detection station includes a short-side support, a short-side profiler, and a short-side straight module. At least two sets of short-side profilers are installed on the short-side support and directly above the magnetic levitation conveyor production line. The short-side profilers are installed on the short-side support via the short-side straight module.

8. The integrated machine for magnetic levitation pre-spot welding of a ring wire according to claim 1, characterized in that: The pre-welding station includes a galvanometer linear module. The output direction of the galvanometer linear module is consistent with the output direction of the magnetic levitation conveyor line. A welding head lifting module is provided on the output end side of the galvanometer linear module, and the output end of the welding head lifting module is connected to the galvanometer welding head located directly above the magnetic levitation conveyor line.

9. The integrated machine for magnetic levitation pre-spot welding of a loop wire according to claim 1, characterized in that: The fixture dust removal station includes a dust removal support frame, and a lifting module is installed on one side of the dust removal support frame. The output end of the lifting module is connected to the dust removal chamber located directly above the magnetic levitation conveyor production line.

10. A battery assembly system, characterized in that, Including the magnetic levitation pre-spot welding ring machine as described in any one of claims 1-9.

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