Welding production line and battery production system

Abstract

This application relates to the field of battery welding technology and provides a welding production line and a battery production system. The welding production line of this application includes a conveyor line, a movable jig mounted on the conveyor line, and welding equipment and a recirculation device mounted on the conveyor line. The movable jig can carry battery cells; the welding equipment can weld the top cover and casing of the battery cell together; the recirculation device can remove protective covers from battery cells downstream of the welding equipment and assemble the protective covers onto battery cells upstream of the welding equipment. This welding production line realizes an integrated continuous production process for battery cells, from installing protective covers, welding, and recycling the protective covers. By setting up the recirculation device, used protective covers can be quickly returned and assembled onto unwelded battery cells. A smaller number of protective covers are needed to operate the welding production line, improving the recycling efficiency of the protective covers, which is beneficial for improving resource utilization and reducing production costs.

Description

Technical Field

[0001] This application relates to the field of battery welding technology, and in particular to a welding production line and a battery production system. Background Technology

[0002] In actual production, the top cover of the square-shell battery cell is welded to the shell using laser welding. During welding, a protective cover needs to be installed on the top cover to protect the terminals and injection holes on the top cover.

[0003] In welding production lines, there are usually two stations for installing and removing protective covers. This requires staff to regularly collect the protective covers from the removal station and transport them to the installation station for later use. This results in the accumulation of protective covers and low circulation efficiency, which is not conducive to improving resource utilization. Utility Model Content

[0004] In view of this, this application aims to propose a welding production line to improve resource utilization.

[0005] To achieve the above objectives, the technical solution of this application is implemented as follows: A welding production line includes a conveyor line, a movable jig mounted on the conveyor line, and welding equipment and reflow equipment mounted on the conveyor line. The moving jig can carry the battery cell; The welding equipment is capable of welding the top cover and the casing of the battery cell together; The reflow device is capable of removing the protective cover from the cell downstream of the welding equipment and assembling the protective cover onto the cell upstream of the welding equipment.

[0006] Furthermore, the recirculation device includes a feeding section capable of removing the protective cover, a discharging section capable of assembling the protective cover onto the battery cell, and a conveying section disposed between the feeding section and the discharging section; The loading section can unload the protective cover onto the conveying section, and the conveying section can transport the protective cover to the unloading section.

[0007] Furthermore, the welding equipment includes a moving device and a welding head assembly disposed on the moving device; The moving device can move the welding head assembly so that the welding head assembly welds the battery cell along the welding trajectory of the top cover.

[0008] Furthermore, the conveyor line is a magnetic levitation conveyor line and includes a plurality of first track segments that can be arranged sequentially along the conveying path, a displacement device connecting at least one of the first track segments, and a second track segment connected to the displacement device. The displacement device can selectively connect either the first track segment or the second track segment connected to itself into the conveying path; When the first track segment detaches from the conveying path, it can cause the moving fixture on the first track segment to detach from the conveying path.

[0009] Furthermore, the displacement device moves the first track segment and the second track segment along a first preset direction; The moving device moves the welding head assembly along the first preset direction, enabling the welding head assembly to correspond with the moving jig that has exited the conveying path.

[0010] Furthermore, the conveyor line is equipped with a plasma cleaning device capable of cleaning the welding position of the battery cell. Along the conveying direction of the conveyor line, the plasma cleaning device is located downstream of the loading section and upstream of the welding equipment.

[0011] Furthermore, upstream of the feeding section, along the conveying direction of the conveyor line, an addressing device and a decoupling detection device are sequentially provided; The addressing device can address the welding trajectory of the battery cell to be welded, and the defocusing detection device can detect the defocusing amount of the welding plane of the battery cell to be welded.

[0012] Furthermore, a roller pressing device is provided downstream of the feeding section, which can flatten the edge of the shell.

[0013] Furthermore, a profiler for detecting the battery cell is provided downstream of the feeding section.

[0014] Furthermore, the conveyor line is rectangular and has four conveyor sections connected in sequence, with adjacent conveyor sections connected by a turntable.

[0015] Compared with related technologies, this application has the following advantages: (1) The welding production line described in this application realizes an integrated continuous production process of battery cells from installing protective covers, welding, and recycling of protective covers by setting up a conveyor line, moving jig, welding equipment and recirculation equipment. By setting up recirculation equipment, the used protective covers can be quickly returned and assembled onto unwelded battery cells. The welding production line can be operated with a smaller number of protective covers, which improves the recycling efficiency of protective covers, helps to improve resource utilization and reduce production costs.

[0016] (2) The feeding section, unloading section and conveying section of the return equipment work together to make the process of removing, transporting and reassembling the protective cover smooth and efficient, which is conducive to improving the efficiency of the return of the protective cover, reducing manual intervention, reducing the probability of error, and thus improving the production efficiency and stability of the entire production line.

[0017] (3) The moving device in the welding equipment can flexibly drive the welding head assembly to move, so that the welding head assembly can weld the battery cell along the welding trajectory of the top cover, so that the welding process can be controlled more precisely according to the specific shape of the battery cell and the welding requirements, ensuring the accuracy of the welding position and the stability of the welding quality.

[0018] (4) The conveyor line adopts a magnetic levitation conveyor line, and through the combination design of multiple first track sections, displacement devices and second track sections, it realizes flexible track switching and precise disengagement of moving jigs. The displacement device can select one of the first track section and the second track section to connect to the conveyor path according to production needs. When the first track section is disengaged from the conveyor path, it can drive the moving jig on it to disengage, which facilitates the individual processing of specific moving jigs or the battery cells on them, improves the scheduling flexibility of the conveyor line, is conducive to realizing flexible production of the production line, and can better cope with changes in different production tasks and process requirements.

[0019] (5) The displacement device moves the first track segment and the second track segment along the first preset direction, and the moving device also moves the welding head assembly along the first preset direction. This allows the operator to conveniently use the battery on the moving jig that is out of the conveying path to debug the welding equipment. This ensures that the welding production line can still operate normally while debugging the welding equipment, which helps to reduce downtime and improve production efficiency.

[0020] (6) A plasma cleaning device is installed on the conveyor line, and its position is downstream of the loading section and upstream of the welding equipment. It can clean the position to be welded before the battery cell is welded, effectively remove oil stains, impurities and other pollutants from the position to be welded, improve the cleanliness and activity of the welding surface, thereby significantly improving the welding quality, reducing the generation of welding defects, and helping to improve the production quality and stability of the welding production line.

[0021] (7) The addressing device addresses the welding trajectory of the battery cell to be welded, providing accurate position information for subsequent welding operations, ensuring that the welding head assembly can accurately weld along the welding trajectory; the defocus detection device detects the defocus of the welding plane of the battery cell to be welded, and promptly detects the position deviation of the welding plane of the battery cell, so as to adjust the welding parameters or screen out defective battery cells. The coordinated work of these two devices improves the accuracy and stability of the welding process, which is conducive to improving the production yield.

[0022] (8) A roller pressing device is set downstream of the feeding section, which can flatten the edge of the shell, making the appearance of the battery cell more regular and less likely to scratch other parts when the battery cell is used later; a profilometer for detecting the battery cell is set up, which can perform comprehensive size and shape detection on the battery cell after welding, and promptly detect problems such as deformation that may occur during the welding process, so as to facilitate monitoring and adjustment of the production process and ensure product quality.

[0023] (9) The conveyor line is rectangular and consists of four conveyor sections connected by a turntable, which can form a compact and reasonable closed production loop with a small footprint. It is also convenient to set up different processing equipment on each conveyor section to form a continuous and efficient production cycle.

[0024] This application also proposes a battery production system, which includes the aforementioned welding production line.

[0025] The battery production system described in this application, by setting up a conveyor line, a moving jig, welding equipment, and a recirculation device, realizes an integrated continuous production process for battery cells, from installing protective covers, welding, and recycling protective covers. By setting up a recirculation device, the used protective covers can be quickly returned and assembled onto unwelded battery cells. A smaller number of protective covers are needed to operate the top cover welding production line in the battery production system, which improves the recycling efficiency of protective covers, helps to improve resource utilization, and reduces the production cost of the battery production system. Attached Figure Description

[0026] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a top view of the welding production line described in the embodiments of this application; Figure 2 This is a perspective view of the welding production line described in the embodiments of this application; Figure 3 for Figure 2 Enlarged view of part A in the middle; Figure 4 for Figure 2 Enlarged view of part B in the middle; Figure 5 This is a schematic diagram of the welding equipment described in the embodiments of this application; Figure 6 This is a schematic diagram of the loading and unloading sections described in the embodiments of this application; Figure 7 This is a schematic diagram of the conveying unit described in an embodiment of this application; Figure 8This is a schematic diagram of the structure of the battery cell and protective cover described in the embodiments of this application; Explanation of reference numerals in the attached figures: 1. Conveyor line; 101. First track section; 102. Second track section; 103. Displacement device; 1031. Base; 1032. Slider; 104. Turntable; 2. Mover jig; 3. Welding equipment; 301. Moving device; 3011. First linear module; 3012. Second linear module; 3013. Third linear module; 3014. Column; 302. Welding head assembly; 4. Reflux equipment; 401. Loading section; 402. Unloading section; 403. Conveying section; 4031. Carrier; 5. Battery cells; 501. Top cover; 502. Shell; 6. Protective cover; 7. Plasma cleaning equipment; 8. Addressing device; 9. Defocusing amount detection device; 10. Roller pressing device; 11. Profilometer; 12. Loading robot; 13. Material unloading robot. Detailed Implementation

[0027] To make the technical solution and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0028] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0029] Furthermore, it should be noted that in the description of this application, if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, these are based on the orientation or positional 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, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] Furthermore, in the description of this application, unless otherwise expressly defined, the terms "installation," "connection," "joining," and "connector" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application in light of the specific circumstances.

[0031] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0032] The present application will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0033] An embodiment of the first aspect of this application provides a welding production line to improve resource utilization.

[0034] In related technologies, the top cover of the square-shell battery cell is welded to the shell using laser welding. During welding, a protective cover needs to be installed on the top cover. The protective cover is used to protect the terminals and injection holes on the top cover and to keep the edge of the top cover exposed at the weld point with the shell, so as to prevent damage to the terminals or injection holes during the welding process.

[0035] In welding production lines, there are usually two stations for installing and removing protective covers. This requires staff to regularly collect the protective covers from the removal station and transport them to the installation station for later use. This results in the accumulation of protective covers and low circulation efficiency, which is not conducive to improving resource utilization.

[0036] In view of this, in order to overcome the shortcomings of the related technologies, the welding production line in this embodiment combines... Figures 1 to 8 In terms of overall design, it includes a conveyor line 1, a movable jig 2 mounted on the conveyor line 1, and welding equipment 3 and reflow equipment 4 mounted on the conveyor line 1.

[0037] The moving jig 2 can carry the battery cell 5. The welding equipment 3 can weld the top cover 501 and the housing 502 of the battery cell 5 together. The reflow equipment 4 can remove the protective cover 6 from the battery cell 5 downstream of the welding equipment 3 and assemble the protective cover 6 onto the battery cell 5 upstream of the welding equipment 3.

[0038] Therefore, by setting up conveyor line 1, moving jig 2, welding equipment 3 and recirculation equipment 4, an integrated continuous production process of battery cell 5 from installing protective cover 6, welding, and recycling of protective cover 6 is realized. By setting up recirculation equipment 4, the used protective cover 6 can be quickly returned and assembled onto the unwelded battery cell 5. The welding production line can be operated with a smaller number of protective covers 6, which improves the recycling efficiency of protective cover 6, helps to improve resource utilization and reduce production costs.

[0039] Based on the above overview, specifically, the welding production line in this embodiment is used to weld the top cover 501 at the top of the square-shell battery cell 5. The moving jig 2 is used to support the battery cell 5 and has a fixing structure capable of fixing the battery cell 5 onto the moving jig 2; for example, a linear module can be used to press the battery cell 5 onto the moving jig 2. The specific form of the protective cover 6 can be, for example, using... Figure 8 The structure of the protective cover 6 is shaped like a truncated quadrangular pyramid with an open bottom.

[0040] Combination Figure 1 , Figure 2 , Figure 6 , Figure 7 As shown, in some exemplary embodiments, the recirculation device 4 includes a loading section 401 capable of removing the protective cover 6, a unloading section 402 capable of assembling the protective cover 6 onto the battery cell 5, and a conveying section 403 disposed between the loading section 401 and the unloading section 402. The loading section 401 can unload the protective cover 6 onto the conveying section 403, and the conveying section 403 can convey the protective cover 6 to the unloading section 402.

[0041] In this way, the feeding section 401, unloading section 402 and conveying section 403 of the return equipment 4 work together to make the process of removing, transporting and reassembling the protective cover 6 smooth and efficient, which helps to improve the efficiency of the return of the protective cover 6, reduce manual intervention, reduce the probability of error, and thus improve the production efficiency and stability of the entire production line.

[0042] Specifically, such as Figure 6 and Figure 7As shown, both the loading section 401 and the unloading section 402 can be, for example, three-axis robotic arms of the negative pressure suction type, mounted on the working surface via a bracket. The conveying section 403 may include a frame mounted on the working surface, and a movable carrier 4031 is mounted on the frame. The carrier 4031 is used to support the protective cover 6. The driving device for the carrier 4031 can be a servo motor, which drives the movement of the carrier 4031 by means of synchronous belt drive, thereby realizing the movement of the carrier 4031 between the loading section 401 and the unloading section 402.

[0043] Reference Figure 1 , Figure 2 and Figure 5 As shown, in some exemplary embodiments, the welding equipment 3 includes a moving device 301 and a welding head assembly 302 disposed on the moving device 301. The moving device 301 is capable of moving the welding head assembly 302 so that the welding head assembly 302 welds the battery cell 5 along the welding trajectory of the top cover 501. The moving device 301 is disposed on the working surface.

[0044] In this way, the moving device 301 in the welding equipment 3 can flexibly drive the welding head assembly 302 to move, so that the welding head assembly 302 can weld the battery cell 5 along the welding trajectory of the top cover 501. This allows the welding process to be controlled more precisely according to the specific shape of the battery cell 5 and the welding requirements, ensuring the accuracy of the welding position and the stability of the welding quality.

[0045] It should be noted that the welding trajectory of the top cover 501 is the rectangular closed trajectory formed by the contact position between the top cover 501 and the shell 502. The welding head of the welding equipment 3 uses laser welding to weld the welding trajectory, so that the top cover 501 and the shell 502 are fused together.

[0046] Additionally, the moving device 301 can be configured as a three-axis manipulator, using three sets of linear modules to drive the movement of the welding head assembly 302. The welding head assembly 302 is mounted on a third linear module 3013, which is connected to a second linear module 3012. The second linear module 3012 is connected to a first linear module 3011, and the first linear module 3011 is mounted on the working surface via a column 3014. The first linear module 3011 moves the second linear module 3012 along a first preset direction, the second linear module 3012 moves the third linear module 3013 along a second preset direction, and the third linear module 3013 moves the welding head assembly 302 along a third preset direction. The welding head assembly 302 uses laser welding; the specific setup can be found in the welding head arrangement of existing laser welding equipment 3, as long as the welding head assembly 302 can perform welding on the target trajectory.

[0047] Based on the welding equipment 3, which includes a moving device 301 and a welding head assembly 302, in some exemplary embodiments, the conveyor line 1 is a magnetically levitated conveyor line 1, and includes a plurality of first track segments 101 that can be arranged sequentially along the conveying path, a displacement device 103 connecting at least one of the first track segments 101, and a second track segment 102 connected to the displacement device 103. The displacement device 103 can selectively connect one of the first track segment 101 and the second track segment 102 connected to it to the conveying path. When the first track segment 101 leaves the conveying path, it can drive the moving fixture 2 on the first track segment 101 to leave the conveying path.

[0048] With this arrangement, conveyor line 1 adopts a magnetic levitation conveyor line 1, and through the combined design of multiple first track sections 101, displacement devices 103, and second track sections 102, it achieves flexible track switching and precise disengagement of the moving jig 2. The displacement device 103 can selectively connect the first track section 101 and the second track section 102 to the conveyor path according to production needs. When the first track section 101 disengages from the conveyor path, it can drive the moving jig 2 on it to disengage, facilitating individual processing of specific moving jigs 2 or their onboard battery cells 5. This improves the scheduling flexibility of conveyor line 1, which is conducive to achieving flexible production on the production line and can better cope with changes in different production tasks and process requirements.

[0049] It should be noted that the conveying path is the complete path along which the moving jig 2 moves on the conveyor line 1. Multiple first track segments 101 can form a complete conveying path. The moving jig 2 slides on the first track segment 101 or the second track segment 102 using the principle of magnetic levitation. The specific arrangement structure of the magnetic levitation conveyor line 1 can refer to the arrangement methods in existing related technologies. Preferably, there is only one first track segment 101 connected to the displacement device 103. In this way, the first track segment 101 and the second track segment 102 can be set as tracks of the same specification and model, and the substitution effect of the two is better.

[0050] In addition, a loading robot 12 is installed at the starting point of the conveying path to install the battery cell 5 onto the moving fixture 2. A unloading robot 13 is installed at the ending point of the conveying path to remove the welded battery cell 5 from the moving fixture 2 and collect it. Both the loading robot 12 and the unloading robot 13 can be four-axis robots.

[0051] Reference Figures 1 to 3 As shown, based on the provision of the displacement device 103, in some exemplary embodiments, the displacement device 103 moves the first track segment 101 and the second track segment 102 along a first preset direction. The moving device 301 moves the welding head assembly 302 along the first preset direction, enabling the welding head assembly 302 to correspond to the moving jig 2 that has exited the conveying path.

[0052] In this way, the displacement device 103 moves the first track segment 101 and the second track segment 102 along the first preset direction, and the moving device 301 also moves the welding head assembly 302 along the first preset direction. This allows the operator to conveniently use the battery cell 5 on the moving jig 2 that is out of the conveying path to debug the welding equipment 3. This ensures that the welding production line can still operate normally while debugging a certain welding equipment 3, which helps to reduce downtime and improve production efficiency.

[0053] In detail, the first preset direction can be a horizontal direction perpendicular to the conveying path or a vertical direction perpendicular to the conveying path, as long as it is perpendicular to the conveying path.

[0054] Preferably, three welding devices 3 can be set up, and each welding device 3 is equipped with a corresponding displacement device 103. When debugging any one welding device 3, the operation of the other two welding devices 3 is not affected. The displacement device 103 can be equipped with a base 1031 and two sliders 1032. The sliders 1032 are slidably mounted on the base 1031, and the first track segment 101 and the second track segment 102 are each mounted on one slider 1032. A servo motor is installed on the base 1031, and the servo motor drives the sliders 1032 to move via a synchronous belt. The sliders 1032 are connected to the synchronous belt for transmission. When all welding devices 3 are in an available state, the three moving jigs 2 are assembled and move into the position of the corresponding welding device 3 to perform welding operations.

[0055] See Figure 1 and Figure 2 Based on the reflow device 4 including the loading section 401 and the unloading section 402, in some exemplary embodiments, the conveyor line 1 is provided with a plasma cleaning device 7 capable of cleaning the welding position of the battery cell 5. Along the conveying direction of the conveyor line 1, the plasma cleaning device 7 is located downstream of the loading section 401 and upstream of the welding device 3.

[0056] With this arrangement, a plasma cleaning device 7 is installed on the conveyor line 1, and its position is downstream of the feeding section 401 and upstream of the welding device 3. It can clean the position to be welded before the battery cell 5 is welded, effectively removing oil, impurities and other contaminants from the position to be welded, improving the cleanliness and activity of the welding surface, thereby significantly improving the welding quality, reducing the generation of welding defects, and helping to improve the production quality and stability of the welding production line.

[0057] Preferably, the plasma cleaning equipment 7 can be arranged as a combination of long-side cleaning and short-side cleaning. The long-side cleaning plasma cleaning equipment 7 and the short-side cleaning plasma cleaning equipment 7 are arranged sequentially along the conveying direction. The long-side cleaning device is used to clean the long sides of the top cover 501 and the shell 502, and the short-side cleaning device is used to clean the short sides of the top cover 501 and the shell 502.

[0058] Continue reading Figure 1 and Figure 2 Based on the reflow equipment 4, which includes a loading section 401 and a unloading section 402, in some exemplary embodiments, an addressing device 8 and a decoupling detection device 9 are sequentially arranged upstream of the loading section 401 along the conveying direction of the conveyor line 1. The addressing device 8 can address the welding trajectory of the battery cell 5 to be welded, and the decoupling detection device 9 can detect the decoupling amount of the welding plane of the battery cell 5 to be welded.

[0059] As configured above, the addressing device 8 addresses the welding trajectory of the battery cell 5 to be welded, providing accurate position information for subsequent welding operations and ensuring that the welding head assembly 302 can accurately weld along the welding trajectory. The defocusing detection device 9 detects the defocusing amount of the welding plane of the battery cell 5 to be welded, promptly identifying positional deviations in the welding plane of the battery cell 5, so as to adjust the welding parameters or screen out defective battery cells 5. The coordinated work of these two devices improves the accuracy and stability of the welding process, which is conducive to improving the production yield.

[0060] Meanwhile, based on the reflow device 4 including a feeding section 401 and a discharging section 402, in some exemplary embodiments, a roller pressing device 10 is provided downstream of the discharging section 402. The roller pressing device 10 can flatten the edge of the housing 502. The roller pressing device 10 downstream of the discharging section 402 can flatten the edge of the housing 502, making the appearance of the battery cell 5 more regular and less likely to scratch other components during subsequent use of the battery cell 5.

[0061] Specifically, two types of rolling devices 10 can be set to roll the long edge and short edge of the battery cell 5 housing 502 respectively, or only one type of rolling device 10 can be set to roll only the long edge of the battery cell 5 housing 502. Preferably, two rolling devices 10 can be set to roll two battery cells 5 at the same time to improve production efficiency.

[0062] Secondly, based on the reflow equipment 4 including a loading section 401 and a unloading section 402, in some exemplary embodiments, a profilometer 11 for inspecting the battery cell 5 is provided downstream of the unloading section 402. By providing the profilometer 11 for inspecting the battery cell 5, comprehensive dimensional and shape inspection of the battery cell 5 after welding can be performed, allowing for timely detection of deformation and other problems that may occur during the welding process. This facilitates monitoring and adjustment of the production process, ensuring product quality.

[0063] Preferably, four profilometers 11 can be set up to detect the two long sides and two short sides of the battery cell 5 respectively.

[0064] Understandably, the defective battery cells 5 detected by the defocusing detection device 9 will not be cleaned or soldered. These defective battery cells 5 will be moved to the unloading robot 13 along with the moving jig 2, where they will be removed and placed in the centralized storage area for defective battery cells 5. Similarly, the defective battery cells 5 detected by the contour analyzer 11 will also be removed by the unloading robot 13 and placed in the centralized storage area for defective battery cells 5.

[0065] In addition, refer to Figure 1 , Figure 2 and Figure 4 Based on the reflux device 4 including the loading section 401 and the unloading section 402, in some exemplary embodiments, the conveyor line 1 is rectangular and has four conveying sections connected in sequence, with adjacent conveying sections connected by a turntable 104.

[0066] The conveyor line 1 is rectangular and consists of four conveyor sections connected by a turntable 104, which can form a compact and reasonable closed production loop with a small footprint. It also makes it easy to set up different processing equipment on each conveyor section to form a continuous and efficient production cycle.

[0067] Specifically, a first track segment 101 can be set on the turntable 104. After the moving jig 2 moves onto the first track segment 101, the turntable 104 rotates 90 degrees, so that the first track segment 101 is flush with the downstream first track segment 101, facilitating the movement of the moving jig 2 downstream. In this application, the first track segment 101, which is not connected to the displacement device 103 or the turntable 104, is fixed to the working ground by a bracket. The turntable 104 and the displacement device 103 are also fixed to the working ground by a bracket.

[0068] Furthermore, the bracket described in this embodiment does not refer to the same component, but rather to the equipment to be installed on the bracket. It can have different structures and shapes, as long as it can fix the equipment on the working ground.

[0069] It is worth noting that, regarding the welding production line of this embodiment, based on the above exemplary implementations, in specific implementation, as a preferred embodiment, it still consists of... Figures 1 to 7 As shown, it may include, for example, a magnetic levitation conveyor line 1 and a moving jig 2, as well as a loading robot 12, an addressing device 8, a defocusing detection device 9, a reflow device 4, a plasma cleaning device 7, a welding device 3, a roller pressing device 10, a profilometer 11, and a unloading robot 13 arranged sequentially along the conveying direction of the magnetic levitation conveyor line 1.

[0070] The reflux equipment 4 includes a feeding section 402 located between the decoking amount detection device 9 and the plasma cleaning device 7, a feeding section 401 located between the welding device 3 and the roller pressing device 10, and a conveying section 403 located between the feeding section 401 and the feeding section 402.

[0071] The welding equipment 3 includes a moving device 301 and a welding head assembly 302. The moving device 301 is a three-axis manipulator that can move the welding head assembly 302 to weld along the welding trajectory on the battery cell 5. The welding head assembly 302 is a laser welding device.

[0072] The conveyor line 1 is rectangular and has four conveyor sections connected in sequence. Adjacent conveyor sections are connected by a turntable 104. The loading robot 12 and the unloading robot 13 are respectively located on both sides of a turntable 104.

[0073] Among them, the rolling device 10 is used to roll the long side of the opening edge of the housing 502, and four profilers 11 are provided to detect the four sides of the top of the cell 5 respectively.

[0074] In the preferred embodiment of the above welding production line, the specific settings and arrangements of the conveyor line 1, the moving jig 2, the welding equipment 3, the reflow equipment 4, etc. can still be referred to the descriptions in the above exemplary embodiments. Furthermore, in this preferred embodiment, the beneficial effects brought about by the design of the conveyor line 1, the moving jig 2, the welding equipment 3, the reflow equipment 4, etc. can also be referred to the descriptions in the above exemplary embodiments.

[0075] The welding production line in this embodiment adopts the above design. By setting up a conveyor line 1, a moving jig 2, welding equipment 3, and a return equipment 4, it realizes an integrated continuous production process of battery cell 5 from installing protective cover 6, welding, and recycling of protective cover 6. By setting up the return equipment 4, the used protective cover 6 can be quickly returned and assembled onto the unwelded battery cell 5. The welding production line can be operated with a smaller number of protective covers 6, which improves the recycling efficiency of protective cover 6, helps to improve resource utilization, and reduces production costs.

[0076] Secondly, by combining the modular design of the equipment mechanism with the integrated moving jig 2 and magnetic levitation transportation technology to participate in the processing of each functional module, the overall efficiency of single equipment and the whole line equipment has been greatly improved, the ramp-up period of the equipment in the later stage has been reduced, and it is conducive to stable and efficient production.

[0077] An embodiment of the second aspect of this application provides a battery production system, which includes the welding production line of the embodiment of the first aspect of this application.

[0078] The battery production system of this embodiment includes a conveyor line 1, a moving jig 2, a welding device 3, and a recirculation device 4. It realizes an integrated continuous production process for the battery cell 5, from installing the protective cover 6, welding, and recycling the protective cover 6. By setting up the recirculation device 4, the used protective cover 6 can be quickly returned and assembled onto the unwelded battery cell 5. A smaller number of protective covers 6 are needed to realize the operation of the top cover 501 welding production line in the battery production system, which improves the recycling efficiency of the protective cover 6, helps to improve resource utilization, and reduces the production cost of the battery production system.

[0079] The above descriptions are merely some embodiments of this application and are not intended to limit this application. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this application can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of the claims of this application.

Claims

1. A welding production line, characterized in that: It includes a conveyor line, a movable jig on the conveyor line, and welding equipment and reflow equipment on the conveyor line; The moving jig can carry the battery cell; The welding equipment is capable of welding the top cover and the casing of the battery cell together; The reflow device is capable of removing the protective cover from the cell downstream of the welding equipment and assembling the protective cover onto the cell upstream of the welding equipment.

2. The welding production line according to claim 1, characterized in that: The recirculation device includes a loading section capable of removing the protective cover, a unloading section capable of assembling the protective cover onto the battery cell, and a conveying section disposed between the loading section and the unloading section; The loading section can unload the protective cover onto the conveying section, and the conveying section can transport the protective cover to the unloading section.

3. The welding production line according to claim 1, characterized in that: The welding equipment includes a moving device and a welding head assembly disposed on the moving device; The moving device can move the welding head assembly so that the welding head assembly welds the battery cell along the welding trajectory of the top cover.

4. The welding production line according to claim 3, characterized in that: The conveyor line is a magnetic levitation conveyor line and includes a plurality of first track segments that can be arranged sequentially along the conveying path, a displacement device connecting at least one of the first track segments, and a second track segment connected to the displacement device. The displacement device can selectively connect either the first track segment or the second track segment connected to itself into the conveying path; When the first track segment detaches from the conveying path, it can cause the moving fixture on the first track segment to detach from the conveying path.

5. The welding production line according to claim 4, characterized in that: The displacement device moves the first track segment and the second track segment along a first preset direction; The moving device moves the welding head assembly along the first preset direction, enabling the welding head assembly to correspond with the moving jig that has exited the conveying path.

6. The welding production line according to claim 2, characterized in that: The conveyor line is equipped with a plasma cleaning device capable of cleaning the welding position of the battery cell. Along the conveying direction of the conveyor line, the plasma cleaning device is located downstream of the loading section and upstream of the welding equipment.

7. The welding production line according to claim 2, characterized in that: Upstream of the feeding section, along the conveying direction of the conveyor line, an addressing device and a decoupling detection device are sequentially provided. The addressing device can address the welding trajectory of the battery cell to be welded, and the defocusing detection device can detect the defocusing amount of the welding plane of the battery cell to be welded.

8. The welding production line according to claim 2, characterized in that: A roller pressing device is provided downstream of the feeding section, which can flatten the edge of the shell; and / or, Downstream of the feeding section is a profiler for detecting the battery cell.

9. The welding production line according to any one of claims 1 to 8, characterized in that: The conveyor line is rectangular and has four conveyor sections connected in sequence, with adjacent conveyor sections connected by a turntable.

10. A battery production system, characterized in that: The battery production system includes the welding production line according to any one of claims 1 to 9.

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