Battery cell cover plate periphery welding production line and battery production system

Abstract

The utility model relates to the technical field of battery production, in particular to a battery cell cover plate periphery welding production line and a battery production system. The battery cell cover plate periphery welding production line comprises a magnetic suspension conveying mechanism, a backflow mechanism, a feeding mechanism, a cover plate welding unit and a discharging mechanism. The magnetic suspension conveying mechanism comprises a magnetic suspension conveying line and a plurality of rotor jigs, and the rotor jigs move from the feeding end of the magnetic suspension conveying line to the discharging end of the magnetic suspension conveying line. The feeding mechanism, the cover plate welding unit and the discharging mechanism are sequentially arranged in the conveying direction of the magnetic suspension conveying line, and the rotor jig carries the battery cells to shuttle to different production stations. The rotor jig moves from the discharging end to the feeding end of the magnetic suspension conveying line through the backflow mechanism. The battery production system comprises the battery cell cover plate periphery welding production line. According to the battery cell cover plate periphery welding production line and the battery production system, the equipment investment cost, the work station distribution intensity, the occupied area and the like are reduced.

Description

Technical Field

[0001] The present application relates to the field of battery production technology, and in particular to a battery cell cover peripheral welding production line and a battery production system. Background Art

[0002] High-speed production lines in the battery production field mostly achieve the purpose of increasing production capacity by stacking more independent workstations. Each independent workstation is equipped with equipment corresponding to the required process, but frequent product unloading, product transfer and product loading are required between two independent workstations.

[0003] At present, a large number of workstations need to be built to complete the welding process around the battery cover, and the problems of high equipment investment cost, dense distribution of workstations and large floor space are very prominent, which has affected the realization of high-speed and efficient production of battery cells. Utility Model Content

[0004] The purpose of the present application is to provide a cell cover peripheral welding production line and a battery production system, so as to solve to a certain extent the existing technical problems that a large number of workstations need to be built to complete the cell cover peripheral welding process, and the equipment investment cost is high, the workstations are densely distributed and the area occupied is large, which has caused technical problems affecting the realization of high-speed and efficient production of battery cells.

[0005] The present application provides a cell cover peripheral welding production line, including a magnetic suspension transmission mechanism, a reflux mechanism, a loading mechanism, a cover welding unit and a unloading mechanism;

[0006] The magnetic suspension transmission mechanism includes a magnetic suspension conveyor line and a plurality of movable fixtures, and the movable fixtures move from a feeding end to a feeding end of the magnetic suspension conveyor line;

[0007] A plurality of production stations are formed on the magnetic suspension conveyor line, the loading mechanism, the cover plate welding unit and the unloading mechanism are arranged in sequence along the conveying direction of the magnetic suspension conveyor line and are arranged on the sides of different production stations, and the mover fixture carries the battery cell to shuttle between different production stations to complete the welding of the shell and the cover plate of the battery cell;

[0008] The reflux mechanism is connected between the two ends of the magnetic suspension conveyor line, and the mover fixture moves from the unloading end to the upper feeding end of the magnetic suspension conveyor line through the reflux mechanism.

[0009] In the above technical solution, further, the magnetic levitation conveyor line is extended in a ring shape with a concave portion, and the concave portion is formed between a loading end and a unloading end of the magnetic levitation conveyor line.

[0010] In any of the above technical solutions, further, the magnetic suspension conveyor line includes a first conveyor section, a second conveyor section, a third conveyor section and a fourth conveyor section connected in sequence;

[0011] The first conveying section and the third conveying section are arranged opposite to each other and both extend in the first direction, the second conveying section and the fourth conveying section are arranged opposite to each other and both extend in the second direction, one end of the first conveying section away from the second conveying section forms a loading end of the magnetic suspension conveying line, and one end of the fourth conveying section away from the third conveying section forms a unloading end of the magnetic suspension conveying line;

[0012] The first direction and the second direction are arranged crosswise.

[0013] In any of the above technical solutions, further, the production station can accommodate a plurality of the mover jigs, so that a plurality of the battery cells are processed synchronously, and a plurality of the mover jigs are synchronously driven into the same production station, and after the processing is completed, all the mover jigs are synchronously driven out;

[0014] The production stations include a loading station, a welding station and an unloading station.

[0015] In any of the above technical solutions, further, the cover plate welding unit includes a first welding mechanism and a second welding mechanism;

[0016] The second welding mechanism is arranged downstream of the first welding mechanism; the cover plate includes a positive cover plate and a negative cover plate, one of the first welding mechanism and the second welding mechanism is used to weld the shell and the positive cover plate, and the other is used to weld the shell and the negative cover plate.

[0017] In any of the above technical solutions, further, the cover plate welding unit is arranged on the inner side of the magnetic suspension conveyor line;

[0018] The cover plate welding unit further includes a steering assembly, which is disposed between the first welding mechanism and the second welding mechanism, and the steering assembly can change the polarity of the battery cell facing the cover plate welding unit.

[0019] In any of the above technical solutions, further, the cover plate welding unit includes a plurality of welding parts and a plurality of welding transfer devices, the welding parts are formed with a welding processing area for welding the cover plate and the shell, and the welding transfer device can take out the battery core to be welded in the mover fixture located at the welding station and then send it to the welding processing area, and can also take out the welded battery core from the welding processing area and then send it to the unloaded mover fixture;

[0020] Each of the welding transfer devices is capable of feeding and / or taking materials for at least two of the welding parts; after the battery core to be welded in the mover fixture is taken out by the welding transfer device and sent to the welding part, it is used to receive the battery core of the remaining welding parts after welding;

[0021] The number of the welding parts is not less than the number of the welding transfer devices.

[0022] In any of the above technical solutions, further, the cell cover peripheral welding production line also includes an adjustment mechanism, the adjustment mechanism is arranged between the cover welding unit and the unloading mechanism along the conveying direction, and the adjustment mechanism includes a pressing roller, and the pressing roller can roll the surface of the shell along the length direction of the cell;

[0023] The cell cover peripheral welding production line further includes a first dust removal mechanism, which is arranged between the adjustment mechanism and the unloading mechanism along the conveying direction;

[0024] The cell cover peripheral welding production line further includes a detection assembly, the detection assembly includes a first detection mechanism and a second detection mechanism, the first detection mechanism is arranged between the cover welding unit and the adjustment mechanism along the conveying direction, and the second detection mechanism is arranged between the adjustment mechanism and the unloading mechanism along the conveying direction;

[0025] The cell cover peripheral welding production line further includes a recycling mechanism, which is disposed on the side of the magnetic suspension conveyor line and is located downstream of the unloading mechanism along the conveying direction, and the recycling mechanism can collect unqualified cells;

[0026] The cell cover peripheral welding production line also includes a cache component, which is arranged upstream of the unloading mechanism along the conveying direction of the magnetic levitation conveyor line, and is used to temporarily store qualified cell batteries. The cache component includes a cache transfer device and a cache vertical warehouse. When the unloading mechanism is in an overloaded state, the cache transfer device can transport the qualified cell batteries on the mover fixture to the cache vertical warehouse. When the unloading mechanism is in an underloaded state, the cache transfer device can transport the qualified cell batteries in the cache vertical warehouse to the unloaded mover fixture.

[0027] In any of the above technical solutions, further, the magnetic suspension conveyor line is formed into a closed annular structure, the recess is formed by bending a section of the annular structure toward the inside thereof, so as to enclose a containing area outside the magnetic suspension conveyor line; the return mechanism includes a first magnetic suspension return line, the recess is formed on the first magnetic suspension return line, a notch is provided below the first magnetic suspension return line, and the notch forms a first access channel for connecting the inside and the outside of the magnetic suspension conveyor line;

[0028] Alternatively, the magnetic levitation conveying line is formed as a non-closed annular structure with an opening, the opening forms the recess, the return mechanism includes a second magnetic levitation return line and a connecting component, the second magnetic levitation return line is arranged in the same shape as the magnetic levitation conveying line and is located below the magnetic levitation conveying line, the connecting component is arranged between the two ends corresponding to the magnetic levitation conveying line and the second magnetic levitation return line, and the recess forms a second entrance and exit channel.

[0029] The present application also provides a battery production system, including a cell cover peripheral welding production line as described in any of the above technical solutions.

[0030] Compared with the prior art, the beneficial effects of this application are:

[0031] The cell cover peripheral welding production line provided in the present application can make the movable fixture drive the cell circulation between the loading assembly, the cover welding unit and the unloading mechanism through the cooperation of the magnetic levitation conveyor line and the reflux mechanism, and complete the processing technology of welding the positive and negative cover plates to the shell through the cover welding unit during the circulation process. In addition, since the cell completes the above-mentioned process treatment during the continuous circulation process, the complex transfer structure between independent workstations is omitted, and the additional structure of the workstation related to the complex transfer structure is simplified, thereby reducing the equipment investment cost, the density of workstation distribution and the floor space occupied.

[0032] The battery production system provided in the present application includes the above-mentioned battery cover plate periphery welding production line, thereby being able to achieve all the beneficial effects of the battery cover plate periphery welding production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific implementation methods of the present application or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0034] Figure 1A first structural schematic diagram of a cell cover peripheral welding production line provided in an embodiment of the present application, in which the reflow mechanism includes a first magnetic suspension reflow line;

[0035] Figure 2 A second structural schematic diagram of a cell cover peripheral welding production line provided in an embodiment of the present application, in which the reflow mechanism includes a second magnetic suspension reflow line;

[0036] Figure 3 for Figure 1 At A or Figure 2 A local enlarged view at C;

[0037] Figure 4 for Figure 1 At B or Figure 2 A partial enlarged view at point D.

[0038] Reference numerals:

[0039] 10-cover plate welding unit; 11-welding piece; 111-welding processing area; 12-welding transfer device; 101-first welding mechanism; 102-second welding mechanism; 20-adjustment mechanism; 31-first detection mechanism; 32-second detection mechanism; 321-short side contour detection member; 322-long side contour detection member; 41-caching warehouse; 42-caching transfer device; 51-recovery transfer device; 52-recovery warehouse; 61-first dust removal mechanism; 62-second dust removal mechanism; 70-magnetic suspension conveyor line; 721-first conveying section; 722-second conveying section; 723-third Conveying section; 724-the fourth conveying section; 71-notch; 72-accommodating area; 73-the first access channel; 701-loading station; 702-the first welding station; 703-the second welding station; 704-the first inspection station; 705-adjustment station; 706-the first dust removal station; 707-the second inspection station; 708-the third inspection station; 709-unloading station; 710-the second dust removal station; 711-mover fixture; 712-mover maintenance area; 74-the first magnetic suspension return line; 80-step ladder; 81-turning station; 90-connecting components; 91-the second access channel. DETAILED DESCRIPTION

[0040] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0042] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Embodiment 1

[0044] See also Figures 1 to 4 As shown, the embodiment of the present application provides a cell cover periphery welding production line, which is used to perform cell cover periphery welding to seal the electrode group in the cell shell, thereby realizing the battery assembly process of cell cover periphery welding. Specifically, the cell can be a blade cell or a square cell, the cell includes a shell and a cover, and the cover is provided with poles, and the poles include positive poles and negative poles.

[0045] When there is one cover plate, the positive electrode column and the negative electrode column are arranged on the same cover plate, and the peripheral welding production line of the battery cell cover plate is used to weld the cover plate of the battery cell to one end of the shell; when there are two cover plates, the cover plate includes a positive cover plate and a negative cover plate, the positive electrode column is arranged on the positive cover plate, and the negative electrode column is arranged on the negative cover plate, which are used to respectively weld the positive cover plate and the negative cover plate of the battery cell to the two ends in the length direction of the shell.

[0046] The cell cover peripheral welding production line comprises a magnetic suspension transmission mechanism, a reflux mechanism, a loading mechanism, a cover welding unit 10 and a unloading mechanism.

[0047] The magnetic suspension transmission mechanism includes a magnetic suspension conveying line 70 and a plurality of movable fixtures 711 . The movable fixtures 711 move from the loading end to the loading end of the magnetic suspension conveying line 70 .

[0048] A plurality of production stations are formed on the magnetic levitation conveyor line 70. The loading mechanism, the cover plate welding unit 10 and the unloading mechanism are arranged sequentially along the conveying direction of the magnetic levitation conveyor line 70 and are set on the sides of different production stations. The movable fixture 711 carries the battery cells to shuttle between different production stations, and sequentially completes the loading operation of placing the battery cells on the movable fixture 711, the welding operation of welding the battery cells around the cover plate, and the unloading operation of removing the welded battery cells from the movable fixture 711, etc., to complete the welding of the battery cell shell and the cover plate.

[0049] The reflux mechanism is connected between the two ends of the magnetic levitation conveyor line 70. The mover fixture 711 moves from the unloading end to the loading end of the magnetic levitation conveyor line 70 through the reflux mechanism, thereby realizing the reflux of the unloaded mover fixture 711 to the loading end of the magnetic levitation conveyor line 70 for carrying the battery cells again, ensuring smooth reflux of the mover fixture 711, greatly shortening the conveying path, saving conveying time, and greatly improving the efficiency of both single-machine equipment and complete equipment.

[0050] Optionally, the mover fixture 711 is preferably formed as a strip structure extending perpendicular to the conveying direction of the magnetic levitation conveyor line 70, so that the cover plate of the battery cell can be arranged toward the mechanism on both sides of the production station, such as the cover plate welding unit 10, so as to facilitate the mechanism to perform corresponding welding and other operations.

[0051] It can be seen that the peripheral welding docking production line of the electric wire cover can drive the moving fixture 711 to circulate the battery cells between the loading assembly, the cover welding unit 10 and the unloading mechanism through the magnetic suspension conveyor line 70 and the reflux mechanism, and complete the processing technology of welding the cover to the shell through the cover welding unit 10 during the circulation process. In addition, since the battery cells complete the above-mentioned process treatment during the continuous circulation process, the complex transfer structure between independent workstations is omitted, and the additional structure of the workstation related to the complex transfer structure is simplified, thereby reducing the equipment investment cost, the density of workstation distribution and the floor space occupied.

[0052] In the optional solution of this embodiment, Figure 1 and Figure 2 As shown, the magnetic levitation conveyor line 70 is an annular extension with a recess, and the recess is formed between the loading end and the unloading end of the magnetic levitation conveyor line 70, so that the magnetic levitation conveyor line 70 has a conveying path with multiple straight-line structures connected at an angle. In this way, the various processing steps on the magnetic levitation conveyor line 70 are reasonably arranged, and compared with the transmission line connected in a straight line in sequence, it is more convenient for the following equipment, and has a higher degree of folding in space, which is conducive to saving space and coordination of multiple processes.

[0053] In this embodiment, the magnetic suspension conveyor line 70 includes a first conveying section 721, a second conveying section 722, a third conveying section 723 and a fourth conveying section 724 which are connected in sequence, wherein each conveying section extends in a straight line.

[0054] The first conveying section 721 and the third conveying section 723 are arranged opposite to each other and both extend along the first direction, the second conveying section 722 and the fourth conveying section 724 are arranged opposite to each other and both extend along the second direction, the end of the first conveying section 721 away from the second conveying section 722 is formed as a loading end, and the end of the fourth conveying section 724 away from the third conveying section 723 is formed as a unloading end; wherein the first direction and the second direction are arranged crosswise, for example, the first direction and the second direction are arranged perpendicularly.

[0055] By splitting the magnetic levitation conveyor line 70 into the first conveying section 721, the second conveying section 722, the third conveying section 723 and the fourth conveying section 724, the magnetic levitation conveyor line 70 is roughly quadrilateral. On the one hand, it can adapt to the shape of most factory buildings and can effectively shorten the span of the battery cover peripheral welding production line in the first direction and the second direction, saving floor space; on the other hand, it is convenient for the battery cover peripheral welding production line to connect with other production loops, thereby expanding its application field.

[0056] It should be noted that the conveying direction of the magnetic levitation conveyor line 70 is the direction indicated by the arrows of the conveying sections of the magnetic levitation conveyor line 70 in the figure and the figure.

[0057] Optionally, the length of the third conveying section 723 is less than the length of the first conveying section 721, so that the accommodation area 72 is formed outside the fourth conveying section 724. Further, when the return mechanism includes the first magnetic suspension return line 74, the first magnetic suspension return line 74 is connected between the first conveying section 721 and the fourth conveying section 724 in an L shape, so that the accommodation area 72 is formed between the first magnetic suspension return line 74 and the fourth conveying section 724.

[0058] In this embodiment, as a first optional implementation scheme of the reflux mechanism, Figure 1 As shown, the magnetic levitation conveyor line 70 is formed into a closed ring structure, and the recess is formed by bending a section of the ring structure inwardly, so as to enclose a receiving area 72 as described below on the outside of the magnetic levitation conveyor line 70; the return mechanism includes a first magnetic levitation return line 74, and the recess is formed on the first magnetic levitation return line 74 so that the mover fixture 711 can circulate along the closed loop, and the first magnetic levitation return line 74 is fully utilized to realize the return of the mover fixture 711, so that the unloaded mover fixture 711 can be smoothly and uninterruptedly supplied from the unloading end to the upper feeding end.

[0059] A notch 71 is provided below the first magnetic levitation return line 74, and the notch 71 forms a first access channel 73 for connecting the inside and outside of the magnetic levitation conveying line 70. The feeding trolley can move in the first access channel 73 to feed materials to the inside of the closed loop, which makes it easier to maintain, inspect and maintain the equipment, thereby reducing the labor cost of the production line and the later investment cost of the equipment.

[0060] In this embodiment, Figure 2 As shown, as a second optional implementation scheme of the return mechanism, the magnetic suspension conveyor line 70 is formed into a non-closed annular structure with an opening, and a concave portion is formed at the opening of the non-closed annular structure. The return mechanism includes a second magnetic suspension return line and a connecting component 90. The second magnetic suspension return line is arranged in the same shape as the magnetic suspension conveyor line 70 and is located below the magnetic suspension conveyor line 70. Among them, Figure 2 The second magnetic suspension return line is not shown in the figure. The second magnetic suspension return line is designed in the same shape as the magnetic suspension conveying line 70 and is arranged below the magnetic suspension conveying line 70. From the perspective of the figure, it is blocked by the magnetic suspension conveying line 70.

[0061] A connecting component 90 is provided between the corresponding ends of the magnetic levitation conveyor line 70 and the second magnetic levitation return line, that is, a connecting component 90 is provided between the loading end of the magnetic levitation conveyor line 70 and one end of the corresponding second magnetic levitation return line, and a connecting component 90 is provided between the unloading end of the magnetic levitation conveyor line 70 and the other end of the corresponding second magnetic levitation return line.

[0062] Thus, the connecting component 90 at the unloading end can transfer the mover jig 711 from the magnetic suspension conveying line 70 to the second magnetic suspension return line, so that the mover jig 711 can flow back along the second magnetic suspension return line to the loading end. Then the connecting component 90 at the loading end transfers the mover jig 711 from the second magnetic suspension return line back to the magnetic suspension conveying line 70, so that the mover jig 711 continues to carry the battery cells on the magnetic suspension conveying line 70 and drives the battery cells to flow between the processing components.

[0063] Optionally, the docking component 90 may include, for example, a lifting device such as a lift to drive the unloaded mover fixture 711 to move back and forth between the second magnetic levitation return line and the magnetic levitation conveying line 70 .

[0064] In a second optional implementation scheme of the reflux mechanism, the recess is formed as a second access channel 91, and the feeding trolley can move in the second access channel 91 to realize feeding to the inner side of the annular magnetic levitation conveyor line 70 having the recess, and compared with the scheme of the first access channel 73, there is no need to deliberately open the gap 71.

[0065] Among them, the magnetic suspension conveyor line 70, the first magnetic suspension return line 74 and the second magnetic suspension return line all use the magnetic suspension principle to drive the mover fixture 711 to move on the magnetic suspension conveyor line 70, wherein the magnetic suspension conveying principle is a prior art and will not be repeated here. The magnetic suspension transmission mechanism has the characteristics of high flexibility, intelligence, modularization, and ultra-high speed, which effectively improves the transmission efficiency between the various stations of the battery cover peripheral welding assembly line, and greatly improves the overall equipment efficiency of the single machine and the whole machine.

[0066] It can be seen that by setting the first access channel 73 on the first magnetic suspension return line 74, or forming the second access channel 91 at the recess, it is convenient to load and unload materials at each workstation, shorten the loading and unloading path, improve the space utilization rate of the welding production line around the battery cover plate, and achieve stable and efficient production.

[0067] In the optional scheme of this embodiment, the production station can accommodate multiple mover fixtures 711, so that multiple battery cells can be processed synchronously, and multiple mover fixtures 711 can be synchronously driven into the same production station. After the processing is completed, all the mover fixtures 711 can be synchronously driven out, thereby greatly improving the overall equipment efficiency of the single machine and the whole machine.

[0068] The production stations include at least a loading station 701 , a welding station and an unloading station 709 , and specifically, also include a first inspection station 704 , an adjustment station 705 , a first dust removal station 706 , a second inspection station 707 , a third inspection station 708 and a second dust removal station 710 .

[0069] In this embodiment, Figure 1 and Figure 2 As shown, the loading mechanism is arranged on the side of the loading station 701, and is used to place the battery cell in the movable fixture 711 in the loading station 701. The loading mechanism can be a manipulator or other transmission device. In a preferred embodiment, the loading mechanism can grab the battery cells that are adapted to the number of movable fixtures 711 in the loading station 701. For example, four movable fixtures 711 are arranged in the loading station 701. The loading mechanism can grab four battery cells at one time and place the four battery cells in different movable fixtures 711 respectively, so that the loading mechanism can grab them once, saving loading time and improving loading efficiency.

[0070] In this embodiment, Figures 1 to 3 As shown, the cover plate welding unit 10 is arranged inside the magnetic levitation conveyor line 70, thereby reducing the floor space of the production line. It should be noted that the solder required by the cover plate welding unit 10 can be delivered to the cover plate welding unit 10 located inside the magnetic levitation conveyor line 70 through the above-mentioned feeding trolley via the first inlet and outlet channel 73 or the second inlet and outlet channel 91, thereby meeting the welding supply demand.

[0071] In this embodiment, Figure 1 and Figure 2 As shown, the cover plate welding unit 10 includes a first welding mechanism 101 and a second welding mechanism 102, wherein the second welding mechanism 102 is disposed downstream of the first welding mechanism 101 along the conveying direction of the magnetic suspension conveyor line 70. In the case where the cover plate includes a positive cover plate and a negative cover plate, the first welding mechanism 101 is used to weld one of the positive cover plate and the negative cover plate to the shell, and the second welding mechanism 102 is used to weld the other of the positive cover plate and the negative cover plate to the shell.

[0072] For example, the first welding mechanism 101 is used to weld the negative electrode cover plate and the shell, and the second welding structure is used to weld the positive electrode cover plate and the shell. This simplifies the peripheral welding assembly process of the cover plate when there are multiple cover plates, thereby improving the production efficiency of the production line.

[0073] In this embodiment, if Figure 1 and Figure 2 As shown, the welding station includes a first welding station 702 and a second welding station 703, the first welding mechanism 101 is arranged on the side of the first welding station 702, and the second welding mechanism 102 is arranged on the side of the second welding station 703, and the number of movable fixtures 711 that can be accommodated in the first welding station 702 is the same as the number of movable fixtures 711 that can be accommodated in the second welding station 703, so as to ensure that the production rhythm of the first welding mechanism 101 and the second welding mechanism 102 are consistent, thereby improving the stability of the production line.

[0074] Specifically, the first welding station 702 is arranged in the first conveying section 721, the first welding mechanism 101 is arranged on the inner side of the first conveying section 721 corresponding to the first welding station 702, the second welding station 703 is arranged in the second conveying section 722, and the second welding mechanism 102 is arranged on the inner side of the second conveying section 722 corresponding to the second welding station 703.

[0075] Therefore, on the one hand, by arranging the first welding station 702 and the second welding station 703 in the first conveying section 721 and the second conveying section 722 respectively, even if a large number of mover fixtures 711 are accommodated in the two sections, the welding stations will not occupy too much space in a single direction, thereby improving the rationality of space utilization of the welding stations; on the other hand, it is convenient for the staff to timely monitor the working status of the first welding mechanism 101 and the second welding mechanism 102 in the inner angle space of the first conveying section 721 and the second conveying section 722, thereby improving production reliability.

[0076] Optionally, the cover plate welding unit 10 also includes a steering assembly, and the processing station of the magnetic levitation conveyor line 70 includes a steering station 81, which is located between the first welding station 702 and the second welding station 703, and the steering assembly is arranged on the side of the steering station 81 so that the steering assembly is arranged between the first welding mechanism 101 and the second welding mechanism 102.

[0077] The steering assembly can reverse the polarity of the battery cell facing the cover plate welding unit 10. In other words, the steering assembly can reverse the direction of the battery cell with the positive pole facing the inner side of the magnetic levitation conveyor line 70 so that the negative pole of the battery cell faces the inner side of the magnetic levitation conveyor line 70, or the steering assembly can reverse the direction of the battery cell with the negative pole facing the inner side of the magnetic levitation conveyor line 70 so that the positive pole of the battery cell faces the inner side of the magnetic levitation conveyor line 70, thereby enabling the first welding mechanism 101 and the second welding mechanism 102 located on the same side of the magnetic levitation conveyor line 70 to weld the cover plates of different polarities of the battery cells in sequence.

[0078] In this embodiment, if Figures 1 to 3 As shown, the cover plate welding unit 10 includes a plurality of welding parts 11 and a plurality of welding transfer devices 12. The welding parts 11 may be equipment such as a laser welder that can realize a welding process. The welding transfer device 12 may be a device such as a robotic arm that can realize the grabbing and transfer of battery cells. The welding parts 11 are formed with a welding processing area 111 for welding the cover plate and the shell. The welding transfer device 12 can take out the battery cells to be welded in the mover fixture 711 located at the welding station and then send them to the welding processing area 111, and can also take out the welded battery cells from the welding processing area 111 and then send them to the unloaded mover fixture 711.

[0079] In this embodiment, each welding transfer device 12 is capable of feeding (sending the battery cells to be welded to the welding processing area 111) and taking out (taking out the battery cells after welding from the welding processing area 111) at least two welding parts 11, so that the number of welding parts 11 is not less than the number of welding transfer devices 12.

[0080] After the battery cells to be welded in the mover jig 711 are taken out by the welding transfer device 12 and sent to the welding part 11, they are used to receive the battery cells that have been welded by the remaining welding parts 11. That is to say, after the welding transfer device 12 takes out the battery cells to be welded from the mover jig 711, the mover jig 711 can now be used to receive the battery cells that have been welded by other welding parts 11. The battery cells originally placed in the mover jig 711 are still in the welding process at this time. After the welding is completed, they are transported away from the welding station by other mover jigs 711, which saves the waiting time of the mover jig 711 at the welding station, thereby improving production efficiency.

[0081] In addition, in this embodiment, if Figure 1 and Figure 3 As shown, the unloading mechanism is located on the side of the unloading station 709, and is used to take out the qualified battery cells in the mover fixture 711, and the unloaded mover fixture 711 is driven back to the loading station 701. The unloading mechanism can use a manipulator or other transmission device; in a preferred embodiment, the unloading mechanism can grab the battery cells that match the number of mover fixtures 711 in the unloading station 709. For example, four mover fixtures 711 are provided in the unloading station 709, and the unloading mechanism can grab all the battery cells in the unloading station 709 at one time and transfer them uniformly, so that the unloading mechanism can grab them once, saving unloading time and improving unloading efficiency.

[0082] In order to improve the production quality of the peripheral welding of the cover plate, in this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the cell cover peripheral welding production line also includes an adjustment mechanism 20 arranged on the side of the adjustment station 705, which is used to roll and shape the welded cell. Along the conveying direction of the magnetic suspension conveyor line 70, the adjustment mechanism 20 is arranged between the cover welding unit 10 and the unloading mechanism. The adjustment mechanism 20 includes a pressure roller, which can roll along the length direction of the cell. The pressure roller is formed into a cylindrical structure, so that the pressure roller can roll the surface of the shell along the length direction of the cell, thereby realizing the shaping of the cell and avoiding the welding process from affecting the shape accuracy and dimensional accuracy of the cell.

[0083] In order to further improve the production quality of the peripheral welding of the cover plate, in this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the cell cover peripheral welding production line also includes a detection component and a recycling mechanism.

[0084] The detection assembly includes a first detection mechanism 31 and a second detection mechanism 32. Along the conveying direction of the magnetic levitation conveyor line 70, the first detection mechanism 31 is arranged between the cover welding unit 10 and the adjustment mechanism 20 and is located at the first detection station 704, and is used to detect the appearance of the battery cell after welding. The first detection mechanism 31 can be a CDD appearance detection device. The first detection mechanism 31 can feed back the detection result of the battery cell to the control system. The control system is communicatively connected with the adjustment mechanism 20. According to the detection result of the battery cell by the first detection mechanism 31, the adjustment mechanism 20 can control the shaping mode of the battery cell, such as changing the rolling pressure or the number of rolling times of the pressure roller.

[0085] Furthermore, in this embodiment, along the conveying direction of the magnetic levitation conveyor line 70, the second detection mechanism 32 is arranged between the adjustment mechanism 20 and the unloading mechanism, and is used to detect the contour of the weld between the adjusted upper shell and the cover plate of the battery cell, and mark the battery cells with unqualified welding. The second detection mechanism 32 feeds back the unqualified detection result to the control system, and the control system is communicated with the movable carrier so that the unloading mechanism does not grab the unqualified battery cells carried by the movable carrier.

[0086] Specifically, Figure 4 As shown, the second detection mechanism 32 includes a short side contour detection component 321 and a long side contour detection component 322. The short side contour detection component 321 is arranged on the side of the second detection station 707, and the long side contour detection component 322 is arranged on the side of the third detection station 708. Both the short side contour detection component 321 and the long side contour detection component 322 can adopt a contour meter. The cover plate is a rectangular structure so that the above-mentioned weld is correspondingly formed into a rectangular ring structure. The rectangular ring structure includes two long sides opposite to each other and two short sides opposite to each other. The short side contour detection component 321 is used to detect the short side, and the long side contour detection component 322 is used to detect the short side, thereby improving the accuracy of contour detection.

[0087] Optionally, the adjustment mechanism 20 and the detection assembly are both arranged in the third conveying section 723, and the third conveying section 723 is fully utilized to complete other processing procedures after the battery core is welded and before the material is unloaded, and the inner space of the magnetic suspension conveyor line 70 is fully utilized to perform auxiliary operations such as monitoring and maintenance on the adjustment mechanism 20 and the detection assembly. In addition, the length of the third conveying section 723 is less than the length of the first conveying section 721, so as to avoid the processing procedures involved in the third conveying section 723 from wasting the space in the first direction.

[0088] In this embodiment, if Figure 1 and Figure 2 As shown, the recycling mechanism is arranged on the side of the unloading mechanism. The recycling mechanism is arranged on the side of the magnetic suspension conveyor line 70 and is located downstream of the unloading mechanism along the conveying direction. The recycling mechanism can collect unqualified battery cells.

[0089] Specifically, the recycling mechanism includes a recycling transfer device 51 and a recycling warehouse 52. The recycling transfer device 51 can be a manipulator, and the recycling warehouse 52 is formed into a box or platform or other structure for accommodating unqualified battery cells. The recycling transfer device 51 is used to remove the battery cells marked as unqualified from the actuator fixture 711 and transport them to the recycling warehouse 52.

[0090] In this embodiment, the unloading mechanism is arranged at the fourth conveying section 724, and the recovery mechanism is arranged outside the fourth conveying section 724 and located in the accommodation area 72, so that the overall layout of the production line is reasonable and compact, thereby reducing the floor space of the production line, and facilitating personnel and / or equipment to deliver qualified cells to the next production line, and facilitating personnel and equipment to process unqualified cells. In addition, the length direction of the recovery mechanism is arranged along the first direction in order to make full use of the accommodation area 72.

[0091] In addition, in this embodiment, if Figure 1 and Figure 2 As shown, the cell cover peripheral welding production line also includes a cache component. Along the conveying direction of the magnetic suspension conveyor line 70, the cache component is arranged upstream of the unloading mechanism for temporarily storing qualified cells. The cache component includes a cache transfer device 42 and a cache vertical warehouse 41. The cache transfer device 42 can be a manipulator, and the cache vertical warehouse 41 is formed into a box or platform structure that can accommodate qualified cells. When the unloading mechanism is in an overloaded state (there is too much accumulation of mover carriers upstream of the unloading station 709), the cache transfer device 42 can be in the mover The carrier is stored in the cache. Before the fixture 711 enters the unloading station 709, the qualified battery cells on the movable fixture 711 are transported to the cache warehouse 41. When the unloading mechanism is in an underloaded state (that is, when the above-mentioned recovery and transfer device 51 takes away the unqualified battery cells located in the unloading station 709, the movable carrier originally carrying the unqualified battery cells is in an unloaded state), the cache transfer device 42 can transport the qualified battery cells in the cache warehouse 41 to the unloaded movable fixture 711, thereby ensuring that the unloading mechanism can grab the full battery cells for unloading at one time, thereby further improving the unloading efficiency.

[0092] Optionally, the cache assembly is disposed on the inner side of the fourth conveying section 724, so that the cache assembly and the recovery mechanism are located on the inner side and the outer side of the fourth conveying section 724, respectively, so that the side space of the fourth conveying section 724 is fully utilized adjacent to the unloading station 709, thereby fully improving the space utilization rate. Figure 1 and Figure 2 As shown, the cell cover peripheral welding production line also includes a dust removal component, which can use a fan or a vacuum pump to perform blowing or suction dust removal.

[0093] Specifically, the dust removal assembly includes a first dust removal mechanism 61. Along the conveying direction of the magnetic levitation conveyor line 70, the first dust removal mechanism 61 is arranged downstream of the adjustment mechanism 20 and on the side of the first dust removal station 706, and is used to remove dust from the surface of the shell after rolling, thereby improving the cleanliness of the surface of the battery cell and improving the accuracy and reliability of the detection results of the second detection mechanism 32.

[0094] It is worth emphasizing that the first dust removal station 706 is arranged in the third conveying section 723.

[0095] The dust removal assembly also includes a second dust removal mechanism 62, which is arranged upstream of the feeding mechanism and on the side of the second dust removal station 710 along the conveying direction of the magnetic suspension conveyor line 70, and is used to remove dust from the surface of the unloaded mover fixture 711, so that the mover fixture 711 can enter the feeding station 701 cleanly, ensuring the cleanliness of the welding production process. Specifically, Figure 1 As shown, when the return mechanism includes a first magnetic levitation return line 74, the second dust removal station 710 is arranged on the first magnetic levitation return line 74, and the second dust removal mechanism 62 is arranged on the side of the first magnetic levitation return line 74; when the return mechanism includes a second magnetic levitation return line, the second dust removal station 710 is arranged on the first conveying section 721, and the second dust removal mechanism 62 is arranged on the side of the first conveying section 721, and is located upstream of the loading station 701 (not shown in the figure).

[0096] In addition, in this embodiment, the cell cover peripheral welding production line includes a ladder 80, such as Figure 1 and Figure 2 As shown, the ladder 80 spans the magnetic suspension conveyor line 70. Figure 2 As shown, the cross-ladder 80 may also cross the first magnetic suspension return line 74 .

[0097] Maintenance personnel can move from the outside of the magnetic suspension conveyor line 70 to the inside via the step ladder 80, so as to handle emergency situations. A plurality of step ladders 80 can be provided, and the plurality of step ladders 80 are dispersedly distributed at different locations, so that when a device fails, maintenance personnel can select a step ladder 80 at a suitable location nearby to reach the fault point, thereby improving the timeliness of emergency handling.

[0098] In this embodiment, if Figure 2 As shown, a mover maintenance area 712 is also provided on the side of the recovery and transfer device 51 , in which the staff can increase or decrease the mover fixtures 711 or carry out key maintenance, thereby improving the continuity of the battery cell circulation and the processing efficiency.

[0099] Embodiment 2

[0100] Embodiment 2 provides a battery production system, which includes the cell cover plate periphery welding production line in Embodiment 1. The technical features of the cell cover plate periphery welding production line disclosed in Embodiment 1 are also applicable to this embodiment, and the technical features of the cell cover plate periphery welding production line disclosed in Embodiment 1 will not be described repeatedly.

[0101] The battery production system in this embodiment has the advantages of the cell cover plate periphery welding production line in the first embodiment, and the advantages of the cell cover plate periphery welding production line disclosed in the first embodiment will not be described repeatedly here.

[0102] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit them; although the utility model is described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein by equivalent; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the various embodiments of the utility model. In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments instead of other features, the combination of features of different embodiments means that they are within the scope of the utility model and form different embodiments. For example, any one of the embodiments claimed for protection can be used in any combination. The information disclosed in this background technology section is only intended to deepen the understanding of the overall background technology of the utility model, and should not be regarded as an admission or in any form of implication that the information constitutes prior art known to those skilled in the art.

Claims

1. A cell cover peripheral welding production line, characterized in that: It includes a magnetic suspension transmission mechanism, a reflux mechanism, a feeding mechanism, a cover welding unit and a feeding mechanism; The magnetic suspension transmission mechanism includes a magnetic suspension conveyor line and a plurality of movable fixtures, and the movable fixtures move from a feeding end to a feeding end of the magnetic suspension conveyor line; A plurality of production stations are formed on the magnetic suspension conveyor line, the loading mechanism, the cover plate welding unit and the unloading mechanism are arranged in sequence along the conveying direction of the magnetic suspension conveyor line and are arranged on the sides of different production stations, and the mover fixture carries the battery cell to shuttle between different production stations to complete the welding of the shell and the cover plate of the battery cell; The reflux mechanism is connected between the two ends of the magnetic suspension conveyor line, and the mover fixture moves from the unloading end to the upper feeding end of the magnetic suspension conveyor line through the reflux mechanism.

2. The cell cover peripheral welding production line according to claim 1, characterized in that: The magnetic suspension conveying line extends in a ring shape with a concave portion, and the concave portion is formed between a loading end and a unloading end of the magnetic suspension conveying line.

3. The cell cover peripheral welding production line according to claim 2, characterized in that: The magnetic suspension conveyor line comprises a first conveying section, a second conveying section, a third conveying section and a fourth conveying section connected in sequence; The first conveying section and the third conveying section are arranged opposite to each other and both extend in the first direction, the second conveying section and the fourth conveying section are arranged opposite to each other and both extend in the second direction, one end of the first conveying section away from the second conveying section forms a loading end of the magnetic suspension conveying line, and one end of the fourth conveying section away from the third conveying section forms a unloading end of the magnetic suspension conveying line; The first direction and the second direction are arranged crosswise.

4. The cell cover peripheral welding production line according to claim 1, characterized in that: The production station can accommodate a plurality of the mover jigs, so that a plurality of the battery cells can be processed synchronously, and the plurality of mover jigs can be synchronously driven into the same production station. After the processing is completed, all the mover jigs can be synchronously driven out; The production stations include a loading station, a welding station and an unloading station.

5. The cell cover peripheral welding production line according to claim 4, characterized in that: The cover plate welding unit comprises a first welding mechanism and a second welding mechanism; The second welding mechanism is arranged downstream of the first welding mechanism; the cover plate includes a positive cover plate and a negative cover plate, one of the first welding mechanism and the second welding mechanism is used to weld the shell and the positive cover plate, and the other is used to weld the shell and the negative cover plate.

6. The cell cover peripheral welding production line according to claim 5, characterized in that: The cover plate welding unit is arranged on the inner side of the magnetic suspension conveyor line; The cover plate welding unit further includes a steering assembly, which is disposed between the first welding mechanism and the second welding mechanism, and the steering assembly can change the polarity of the battery cell facing the cover plate welding unit.

7. The cell cover peripheral welding production line according to claim 5, characterized in that: The cover plate welding unit includes a plurality of welding parts and a plurality of welding transfer devices, wherein the welding parts are formed with a welding processing area for welding the cover plate and the shell, and the welding transfer device can take out the battery core to be welded in the mover fixture located at the welding station and then send it to the welding processing area, and can also take out the welded battery core from the welding processing area and then send it to the unloaded mover fixture; Each of the welding transfer devices is capable of feeding and / or taking materials for at least two of the welding parts; after the battery core to be welded in the mover fixture is taken out by the welding transfer device and sent to the welding part, it is used to receive the battery core of the remaining welding parts after welding; The number of the welding parts is not less than the number of the welding transfer devices.

8. The cell cover peripheral welding production line according to claim 5, characterized in that: The cell cover peripheral welding production line further includes an adjustment mechanism, which is disposed between the cover welding unit and the unloading mechanism along the conveying direction, and includes a pressing roller, which can roll the surface of the shell along the length direction of the cell; The cell cover peripheral welding production line further includes a first dust removal mechanism, which is arranged between the adjustment mechanism and the unloading mechanism along the conveying direction; The cell cover peripheral welding production line further includes a detection assembly, the detection assembly includes a first detection mechanism and a second detection mechanism, the first detection mechanism is arranged between the cover welding unit and the adjustment mechanism along the conveying direction, and the second detection mechanism is arranged between the adjustment mechanism and the unloading mechanism along the conveying direction; The cell cover peripheral welding production line further includes a recycling mechanism, which is disposed on the side of the magnetic suspension conveyor line and is located downstream of the unloading mechanism along the conveying direction, and the recycling mechanism can collect unqualified cells; The cell cover peripheral welding production line also includes a cache component, which is arranged upstream of the unloading mechanism along the conveying direction of the magnetic levitation conveyor line, and is used to temporarily store qualified cell batteries. The cache component includes a cache transfer device and a cache vertical warehouse. When the unloading mechanism is in an overloaded state, the cache transfer device can transport the qualified cell batteries on the mover fixture to the cache vertical warehouse. When the unloading mechanism is in an underloaded state, the cache transfer device can transport the qualified cell batteries in the cache vertical warehouse to the unloaded mover fixture.

9. The cell cover peripheral welding production line according to claim 2, characterized in that: The magnetic suspension conveyor line is formed into a closed annular structure, the recess is formed by bending a section of the annular structure inwardly, so as to enclose a containing area outside the magnetic suspension conveyor line; the return mechanism includes a first magnetic suspension return line, the recess is formed on the first magnetic suspension return line, a notch is provided below the first magnetic suspension return line, and the notch forms a first access channel for connecting the inside and the outside of the magnetic suspension conveyor line; Alternatively, the magnetic levitation conveying line is formed as a non-closed annular structure with an opening, the opening forms the recess, the return mechanism includes a second magnetic levitation return line and a connecting component, the second magnetic levitation return line is arranged in the same shape as the magnetic levitation conveying line and is located below the magnetic levitation conveying line, the connecting component is arranged between the two ends corresponding to the magnetic levitation conveying line and the second magnetic levitation return line, and the recess forms a second entrance and exit channel.

10. A battery production system, characterized in that: A cell cover periphery welding production line comprising the battery cell cover periphery welding production line according to any one of claims 1 to 9.

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