A side plate welding device for pouch cells

Abstract

This application relates to the technical field of pouch cell manufacturing equipment, and discloses a side plate welding device for pouch cells. The device includes a welding frame and an automatic welding robot mounted on one side of the welding frame. A welding platform is mounted on the welding frame, and a positioning assembly for positioning the workpiece is mounted on the welding platform. The positioning assembly includes a fixed seat, a clamping plate, and a cover plate. One fixed seat is provided on each of the four sides of a preset position on the workpiece. One clamping plate is positioned parallel to two longitudinally opposite fixed seats, and another is positioned parallel to two laterally opposite fixed seats. The clamping plate slides towards the workpiece and abuts the workpiece against the opposing fixed seats. Several gas pipes are provided on the fixed seat and clamping plate near the weld seam of the workpiece. These gas pipes are connected to an external high-purity nitrogen source and are distributed along the trajectory of the workpiece weld seam. The outlets of the gas pipes are aligned with the weld seam of the workpiece. This application has the effect of improving the welding quality of pouch cells.

Description

Technical Field

[0001] This application relates to the field of equipment technology for manufacturing pouch cells, and in particular to a side plate welding device for pouch cells. Background Technology

[0002] Pouch cells, due to their high energy density, lightweight, and customizability, have been widely used in consumer electronics, electric vehicles, and other fields. As these fields continue to demand higher battery performance, the manufacturing process of pouch cells has gradually become a key research focus. Particularly important in the production of pouch cells is the welding process between the side plates and the casing, as it directly affects the product's quality and safety. Currently, with the increasingly widespread application of pouch cells in the market, the demand for high-quality, high-reliability welding is becoming increasingly urgent.

[0003] In existing technologies, the common method for welding the side panel of a pouch cell to the casing involves manually assembling the side panel and casing, clamping and fixing it with mechanical fixtures, and then using automated welding equipment to align the workpiece with the joint to be welded. In addition, there are some improved methods, such as using laser welding instead of traditional resistance welding, or using vision inspection systems to assist in positioning and improve welding accuracy. However, these methods still have some shortcomings.

[0004] Although existing welding equipment and technology can basically meet the welding requirements of pouch cells, many challenges remain in practical operation. For example, traditional manual positioning methods struggle to ensure precise alignment between the pouch cell housing and side panels during welding, especially when the dimensions are small and high precision is required. This can easily lead to weld misalignment and weak weld joints. Furthermore, the high temperatures generated during welding cause metal oxidation, forming an oxide layer that reduces the strength and conductivity of the weld joint and increases the risk of electrolyte leakage. These problems severely impact the quality and reliability of pouch cells. Summary of the Invention

[0005] To improve the welding quality of pouch cells, this application provides a side plate welding device for pouch cells.

[0006] The side plate welding equipment for a pouch cell provided in this application adopts the following technical solution:

[0007] A side plate welding device for a soft-pack battery cell includes a welding frame and an automatic welding robot mounted on one side of the welding frame. The welding frame has a welding platform, and the welding platform has a positioning component for positioning the workpiece. The positioning component includes a fixed seat, a clamping plate slidably mounted on the fixed seat, and a cover plate that covers both the fixed seat and the clamping plate. One fixed seat is provided on each of the four sides of a preset position on the workpiece. One clamping plate is positioned parallel to two longitudinally opposite fixed seats and also parallel to two laterally opposite fixed seats. The clamping plate slides towards the workpiece and abuts the workpiece against the opposing fixed seats. Several gas pipes are provided on the fixed seat and clamping plate near the workpiece weld seam. These gas pipes are connected to an external high-purity nitrogen source and are distributed along the trajectory of the workpiece weld seam. The outlets of the gas pipes are aligned with the weld seam of the workpiece.

[0008] By adopting the above technical solution, the positioning assembly consisting of the fixing seat, clamping plate, and cover plate can ensure the precise fixation of the workpiece during the welding process, avoiding problems such as weld seam misalignment and weak weld joints. The gas pipes are distributed along the trajectory of the workpiece weld seam, allowing the high-purity nitrogen source to be directed towards the weld seam through evenly distributed gas pipes. This creates a uniform protective atmosphere covering the weld seam during welding, thereby reducing oxidation of the workpiece's metal material, improving weld quality, and reducing the risk of electrolyte leakage.

[0009] Optionally, a number of air guide strips are provided on the fixing seat and clamping plate on the side near the weld of the workpiece. The air guide strips fit the weld and are distributed along the edge of the weld. The air guide strips have oblique air guide nozzles along their own length direction. The air guide nozzles are connected to a number of gas pipes along their length direction to guide nitrogen to the weld.

[0010] By adopting the above technical solution, the angled air guide nozzle design allows nitrogen to more precisely cover the weld area, effectively isolating oxygen, preventing metal oxidation at high temperatures, maintaining the strength and conductivity of the weld joint, and reducing the risk of electrolyte leakage. Furthermore, the air guide strip's design, which fits snugly against the weld, helps stabilize the gas flow field, reduces nitrogen diffusion loss during transmission, improves the nitrogen protection effect, and further enhances welding quality and reliability.

[0011] Optionally, the air guide strip is made of copper.

[0012] By adopting the above technical solution, the air guide vanes are made of copper, which effectively improves heat transfer efficiency, reduces heat accumulation during welding, and avoids material damage and oxidation caused by excessive temperature, thereby further improving the quality and reliability of the welded joint. In addition, copper's good ductility and fatigue resistance also help extend the service life of the equipment.

[0013] Optionally, the air guide strip is provided with an adjustment plate for adjusting the air outlet gap of the air guide nozzle, and the adjustment plate is hinged to the side wall of the air guide nozzle away from the workpiece.

[0014] By adopting the above technical solution, the adjustment plate can flexibly adjust the opening size of the air guide nozzle, thereby more precisely controlling the nitrogen flow rate. This ensures a suitable nitrogen protection environment is provided under different welding conditions, preventing oxidation in the weld area and improving the quality and reliability of the welded joint. Furthermore, the hinged design allows the adjustment plate to be quickly repositioned according to actual needs, enhancing the equipment's flexibility and adaptability, making it suitable for welding various specifications and sizes of soft-pack battery cells.

[0015] Optionally, the air guide strip is provided with an adjustment component for controlling the flip angle of the adjustment plate. The adjustment component includes a secondary push rod and a main push rod that slide through the air guide strip. The end of the secondary push rod is rotatably connected to the adjustment plate through a hinge joint. The bottom end of the main push rod is in contact with the inclined surface of the end of the secondary push rod away from the hinge joint. When the main push rod moves down, the secondary push rod is guided by the inclined surface, pushing the adjustment plate to flip towards the side closer to the workpiece, and the air outlet gap of the air guide nozzle decreases.

[0016] By adopting the above technical solution, the cooperation between the main push rod and the auxiliary push rod can precisely control the flip angle of the adjusting plate, thereby effectively adjusting the air outlet gap of the air guide nozzle. This not only ensures the stability and uniformity of the nitrogen flow, but also allows for flexible adjustment of the gas flow rate under different welding conditions, further improving welding quality and reducing problems such as weld misalignment and weak weld joints.

[0017] Optionally, an elastic reset member is sleeved on the auxiliary push rod. The elastic reset member is slidably disposed inside the air guide strip. When the elastic reset member is in its natural state, the adjusting plate is fitted against the side wall of the air guide nozzle on the side away from the workpiece.

[0018] By adopting the above technical solution, the elastic reset component can automatically reset after the adjustment plate is flipped, ensuring that the adjustment plate can fit tightly against the side wall of the air guide nozzle when the air outlet gap does not need to be adjusted, thereby improving the accuracy of adjusting the air outlet gap of the air guide nozzle.

[0019] Optionally, a drive plate is connected to the top of several main push rods located in the same horizontal direction. A lifting assembly is provided between the drive plate and the adjacent fixed seat or clamping plate. A support seat is provided on the fixed seat or clamping plate adjacent to the drive plate. The lifting assembly includes a fixed rack vertically arranged on the support seat, a drive gear rotatably arranged on the drive plate, and a servo motor that drives several drive gears to rotate synchronously. The drive gears correspond one-to-one with the rack and rotate in mesh.

[0020] By adopting the above technical solution, it is ensured that the air outlet gap of all air guide nozzles can be adjusted synchronously.

[0021] The drive plate is raised and lowered smoothly and precisely using a meshing structure of fixed rack and pinion and drive gear. This allows several main push rods to move up and down synchronously, facilitating the simultaneous adjustment of the air outlet gaps of several air guide nozzles in the same horizontal direction. This improves operational convenience, ensures the uniformity and stability of nitrogen flow, and avoids instability in nitrogen flow caused by mechanical vibration or deviation. The introduction of a servo motor enables automated control, allowing real-time adjustment of the nitrogen supply according to actual welding needs, improving welding efficiency and quality, and reducing human error.

[0022] Optionally, a driven gear ring is rotatably mounted on the vertically arranged air guide strip. The driven gear ring is coaxially mounted with the main push rod and is engaged by a threaded rotation. A drive gear is sleeved on the end of the drive gear shaft extending out of the drive plate. The drive gear and the driven gear ring are driven by multiple transmission gears meshing with each other. All of the multiple transmission gears are rotatably mounted on the side wall of the fixed seat or clamping plate adjacent to the drive plate.

[0023] By adopting the above technical solution, the driven gear ring and the main push rod are coaxially arranged and engaged by a threaded rotation, enabling the main push rod to drive the auxiliary push rod, thereby causing the adjusting plate to rotate and adjust the air outlet gap of the air guide nozzle. The driving gear and the driven gear ring are driven by multiple transmission gears, realizing multi-stage linkage. This ensures that the air outlet gap of all air guide strips on the same fixed seat or clamping plate can be adjusted synchronously, improving the uniformity and stability of gas protection during the welding process and further enhancing the welding quality.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The positioning assembly, consisting of a fixed base, clamping plate, and cover plate, ensures precise fixation of the workpiece during welding, preventing weld misalignment and weak weld joints. The gas pipes are distributed along the weld seam trajectory, allowing a high-purity nitrogen source to be directed towards the weld seam through evenly distributed pipes. This creates a uniform protective atmosphere over the weld seam during welding, reducing oxidation of the workpiece's metal, improving weld quality, and lowering the risk of electrolyte leakage.

[0026] 2. The angled air guide nozzle design allows nitrogen to more precisely cover the weld area, effectively isolating oxygen, preventing metal oxidation at high temperatures, maintaining the strength and conductivity of the weld joint, and reducing the risk of electrolyte leakage. Furthermore, the air guide strip's design, which fits snugly against the weld, helps stabilize the gas flow field, reduces nitrogen diffusion loss during transmission, improves the nitrogen protection effect, and further enhances welding quality and reliability.

[0027] 3. The air guide vanes are made of copper, which effectively improves heat transfer efficiency, reduces heat accumulation during welding, and avoids material damage and oxidation caused by excessive temperature, thereby further improving the quality and reliability of the welded joint. In addition, copper's good ductility and fatigue resistance also help extend the equipment's service life. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application.

[0029] Figure 2 This is a cross-sectional view illustrating the positional relationship between the welding frame and the worktable in an embodiment of this application.

[0030] Figure 3 This is a cross-sectional view illustrating the connection between the air duct and the air guide strip in an embodiment of this application.

[0031] Figure 4 This is a cross-sectional view showing the connection relationship between the air guide strip and the regulating plate in the embodiments of this application.

[0032] Figure 5 This is a cross-sectional view showing the connection relationship between the driven gear ring on the vertically arranged air guide strip and the main push rod in an embodiment of this application.

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

[0034] 1. Welding frame; 11. Guide roller; 12. Pushing cylinder; 2. Automatic welding robot; 3. Welding control vehicle; 31. Ejector; 311. Ejector plate; 3111. Plug-in connector; 3112. Ball bearing; 312. Guide post; 313. Ejector cylinder; 32. Positioning post; 4. Worktable; 41. Rotary seat; 42. Guide rod; 43. Worm gear reducer; 5. Welding platform; 6. Positioning assembly; 61. Fixed seat; 611. Support seat; 612. Transmission gear; 6 2. Clamping plate; 621. Positioning pin; 622. Quick clamp; 63. Cover plate; 631. Fastening screw; 632. Handle; 7. Air pipe; 71. Air guide strip; 711. Air guide nozzle; 712. Adjusting plate; 713. Driven gear ring; 8. Adjusting assembly; 81. Secondary push rod; 811. Elastic reset component; 82. Main push rod; 821. Drive plate; 9. Lifting assembly; 91. Fixed rack; 92. Drive gear; 921. Active gear; 93. Servo motor. Detailed Implementation

[0035] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0036] This application discloses a side plate welding device for pouch cells.

[0037] Reference Figure 1 and Figure 2 A side plate welding device for a soft-pack battery cell includes a welding frame 1 and an automatic welding robot 2. A welding control carriage 3 is slidably mounted inside the welding frame 1 along the direction towards the automatic welding robot 2. A worktable 4 is mounted on top of the welding control carriage 3, covering the welding frame 1. An ejector 31 for lifting the worktable 4 is mounted on top of the welding frame 1. Two rotating seats 41 are fixedly mounted on the worktable 4, distributed along the sliding direction of the welding control carriage 3, and a welding platform 5 is rotatably mounted between the two rotating seats 41. A positioning component 6 for positioning the workpiece is mounted on the welding platform 5. Several gas pipes 7 are also installed on the positioning component 6. The gas pipes 7 are connected to an external high-purity nitrogen source and are distributed along the trajectory of the workpiece weld. The outlets of the gas pipes 7 are aligned with the weld of the workpiece.

[0038] Reference Figure 1 and Figure 2 During the welding process of the side plates of the soft-pack battery cell, the workpiece is first effectively fixed by the positioning component 6. Then, with the combined action of the welding control carriage 3, the ejector 31, the rotating seat 41, and the automatic welding robot 2, the weld seam of the workpiece is precisely welded. A stable nitrogen protective atmosphere is provided during welding to prevent the metal material of the side plate from oxidizing at high temperatures, thereby improving the strength and conductivity of the weld joint and reducing the risk of electrolyte leakage.

[0039] Reference Figure 1 and Figure 2 A guide roller 11 is rotatably mounted on the side wall of the welding frame 1 facing the welding control carriage 3. During the sliding process, the welding control carriage 3 rolls and adheres to the guide roller 11. A push cylinder 12 is also fixedly mounted on the welding frame 1. The extension and retraction direction of the piston rod of the push cylinder 12 is parallel to the sliding direction of the welding control carriage 3, and the end of its piston rod is fixedly connected to the welding control carriage 3.

[0040] Reference Figure 1 and Figure 2 The welding control vehicle 3 has multiple positioning posts 32 fixedly distributed on its top. In this embodiment, four are used as an example. The worktable 4 is fitted onto the four positioning posts 32, and slides vertically with each positioning post 32. Multiple guide rods 42 are also inserted into the worktable 4. In this embodiment, two are used as an example. The guide rods 42 are inserted vertically into the worktable 4 and slide through the welding control vehicle 3.

[0041] Reference Figure 1 and Figure 2In this embodiment, the ejector 31 includes an ejector plate 311, a guide post 312, and an ejector cylinder 313. The ejector cylinder 313 is vertically arranged, and its cylinder body is fixedly mounted on the welding control vehicle 3. The top end of the piston rod extends through the top of the welding control vehicle 3. There is one guide post 312 on each side of the cylinder body, and it slides through the top of the welding control vehicle 3. The ejector plate 311 is fixedly connected to the top ends of the two guide posts 312 and the piston rod, and abuts against the bottom of the worktable 4.

[0042] Reference Figure 2 A plug-in seat 3111 is fixedly installed on the top of the ejector plate 311. A ball bearing 3112 is rotatably embedded at the top of the plug-in seat 3111. The worktable 4 is plugged into the plug-in seat 3111.

[0043] Reference Figure 1 One of the rotating seats 41 is fixedly mounted on the side wall away from the welding platform 5. The output shaft of the worm gear reducer 43 is coaxially fixedly connected to the rotating shaft on the rotating seat 41 that drives the welding platform 5 to rotate.

[0044] Reference Figure 1 and Figure 2 During the welding process, when the workpiece needs to be raised and lowered in conjunction with the automatic welding robot 2, the ejector cylinder 313 extends its piston rod, and the ejector plate 311 supports the worktable 4 to rise, thereby driving the welding platform 5 to rise synchronously. Conversely, when the piston rod retracts, the workpiece descends synchronously under gravity; when the workpiece needs to be moved horizontally, the piston rod of the ejector cylinder 313 retracts until the ejector plate 311 is no longer in contact with the worktable 4. At this time, the push cylinder 12 extends its piston rod, and under the rolling support of several guide rollers 11 and several ball bearings 3112, the welding control carriage 3 slides away from the automatic welding robot 2, thereby driving the welding platform 5 to slide synchronously. Conversely, when the piston rod retracts, the workpiece slides synchronously towards the automatic welding robot 2; when the workpiece needs to be flipped, the worm gear reducer 43 drives the welding platform 5 to flip at a certain angle as needed, so as to better perform welding operations on the workpiece weld.

[0045] Reference Figure 1 and Figure 2 The positioning component 6 includes a fixed base 61, a clamping plate 62, and a cover plate 63. One fixed base 61 is fixedly disposed on each of the four sides of a preset position on the workpiece. One clamping plate 62 is disposed parallel to two longitudinally opposite fixed bases 61, and another is disposed parallel to two laterally opposite fixed bases 61. Both clamping plates 62 slide towards the workpiece, abutting the workpiece against the opposing fixed bases 61. Several positioning pins 621 are fixedly disposed on the side wall of the clamping plate 62 away from the workpiece. These positioning pins 621 slide through the fixed base 61, and quick-clamping devices 622 are installed between the positioning pins 621 to lock the relative position of the fixed base 61 and the clamping plate 62.

[0046] Reference Figure 1 and Figure 2 The cover plate 63 covers the top of the fixing base 61 and the clamping plate 62, and is connected to the fixing base 61 by a fastening screw 631. A handle 632 for easy lifting is fixedly provided on the top of the cover plate 63.

[0047] Reference Figure 2 and Figure 3 Several copper air guide strips 71 are fixedly installed on the fixed seat 61 and clamping plate 62 near the weld seam of the workpiece. Several air pipes 7 are distributed and installed on the side wall of the fixed seat 61 and clamping plate 62 away from the air guide strips 71. The air guide strips 71 have oblique air guide nozzles 711 along their own length direction. The air guide nozzles 711 are connected to several air pipes 7 along their length direction to guide nitrogen to the weld seam.

[0048] Reference Figure 3 and Figure 4 An adjusting plate 712 is provided on the air guide strip 71. The adjusting plate 712 is hinged to the side wall of the air guide nozzle 711 away from the workpiece, and an adjusting assembly 8 is provided on the air guide strip 71. The adjusting assembly 8 includes a secondary push rod 81 and a main push rod 82. Both the secondary push rod 81 and the main push rod 82 are slidably inserted on the air guide strip 71, and the end of the secondary push rod 81 is rotatably connected to the adjusting plate 712 through a hinge joint. An elastic reset member 811 is sleeved on the secondary push rod 81. In this embodiment, the elastic reset member 811 is exemplified by a compression spring, which slides against the inner side wall of the air guide strip 71 and the protruding side wall of the secondary push rod 81. The bottom end of the main push rod 82 is in contact with the inclined surface of the end of the secondary push rod 81 away from the hinge joint.

[0049] Reference Figure 3 and Figure 4 A drive plate 821 is fixedly connected to the top of several main push rods 82 located in the same horizontal direction. A lifting assembly 9 is provided between the drive plate 821 and the adjacent fixed seat 61 or clamping plate 62. A support seat 611 is also fixedly provided on the adjacent fixed seat 61 or clamping plate 62.

[0050] Reference Figure 3 The lifting assembly 9 includes a fixed rack 91, a drive gear 92, and a servo motor 93. The fixed rack 91 is vertically fixed on the side wall of the support base 611. The drive gear 92 is rotatably mounted on the drive plate 821, corresponding to and meshing with the rack. In this embodiment, two drive gears 92 are used as an example, with their rotating shafts coaxially arranged. The servo motor 93 is located between the two drive gears 92 and is a dual-shaft arrangement. It is fixedly mounted on the drive plate 821 and coaxially fixedly connected to the rotating shafts of the two drive gears 92.

[0051] Reference Figure 3 and Figure 5A driven gear ring 713 is rotatably mounted on the side wall of the vertically arranged air guide strip 71. The driven gear ring 713 is coaxially mounted with the main push rod 82 and the two are engaged by a threaded rotation. The drive gear 92 is fixedly mounted on the end of the drive plate 821 where the shaft of the drive gear 92 extends. The drive gear 921 and the driven gear ring 713 are driven by multiple transmission gears 612 meshing. The multiple transmission gears 612 are rotatably mounted on the side wall of the fixed seat 61 or the clamping plate 62 adjacent to the drive plate 821.

[0052] The implementation principle of the side plate welding equipment for a soft-pack battery cell according to an embodiment of this application is as follows: During the welding process of the side plate of the soft-pack battery cell, the workpiece is first effectively fixed by the fixed seat 61, the sliding clamping plate 62, and the cover plate 63 to ensure its stability and accuracy during the welding process. During welding, a stable nitrogen protective atmosphere is provided to the weld seam of the workpiece through the gas pipe 7 and the air guide 71.

[0053] Different welding parameters and workpiece characteristics require different nitrogen flow rates. The servo motor 93 is controlled to adjust the air outlet gap of the air guide nozzle 711 in real time. The servo motor 93 drives the drive gear 92 to rotate, thereby precisely controlling the up-and-down movement of the drive plate 821 under the guidance of the fixed rack 91. When the drive plate 821 moves downward, the main push rod 82 moves downward simultaneously, and the auxiliary push rod 81, guided by the inclined plane, pushes the adjusting plate 712 to flip closer to the workpiece, reducing the air outlet gap of the air guide nozzle 711. Conversely, under the force of the compression spring, the adjusting plate 712 automatically returns to its initial position when no external force is applied, maintaining the optimal air outlet state of the air guide nozzle 711. This improves the flexibility and adaptability of welding, and also allows for better control of the nitrogen flow rate, ensuring that the nitrogen concentration around the weld is always at its optimal level.

[0054] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A side plate welding device for a soft-pack battery cell, comprising a welding frame (1) and an automatic welding robot (2) disposed on one side of the welding frame (1), characterized in that... The welding frame (1) is provided with a welding platform (5), and the welding platform (5) is provided with a positioning component (6) for positioning the workpiece. The positioning component (6) includes a fixed seat (61), a clamping plate (62) slidably disposed on the fixed seat (61), and a cover plate (63) that covers the fixed seat (61) and the clamping plate (62). The fixed seat (61) is provided on each of the four sides along the preset position of the workpiece. The clamping plate (62) is provided parallel between two longitudinally opposite fixed seats (61) and also parallel between two laterally opposite fixed seats (61). The clamping plate (62) slides toward the workpiece and abuts the workpiece against the opposite fixed seat (61). Several gas pipes (7) are provided on the fixing seat (61) and clamping plate (62) near the weld seam of the workpiece. The gas pipes (7) are connected to an external high-purity nitrogen source and are distributed along the trajectory of the weld seam of the workpiece. The outlets of the gas pipes (7) are aligned with the weld seam of the workpiece. Several air guide strips (71) are provided on the fixing seat (61) and clamping plate (62) near the weld seam of the workpiece. The air guide strips (71) fit against the weld seam and are distributed along the edge of the weld seam. The air guide strips (71) have oblique air guide nozzles (711) along their own length direction. The air guide nozzles (711) are connected to the gas pipes (7) along their length direction to guide the nitrogen to the weld seam. The air guide strips (71) are provided with adjustable air guide nozzles (711). 711) An adjusting plate (712) for the air outlet gap, the adjusting plate (712) being hinged to the side wall of the air guide (711) away from the workpiece. An adjusting assembly (8) for controlling the flipping angle of the adjusting plate (712) is provided on the air guide strip (71). The adjusting assembly (8) includes a secondary push rod (81) and a main push rod (82) slidably passing through the air guide strip (71). The end of the secondary push rod (81) is rotatably connected to the adjusting plate (712) through a hinge joint. The bottom end of the main push rod (82) is in contact with the inclined surface of the end of the secondary push rod (81) away from the hinge joint. When the main push rod (82) moves down, the secondary push rod (81) is guided by the inclined surface, pushing the adjusting plate (712) to flip towards the side closer to the workpiece. The air outlet gap of the nozzle (711) is reduced. Several main push rods (82) located in the same horizontal direction are connected to a drive plate (821). A lifting assembly (9) is provided between the drive plate (821) and the adjacent fixed seat (61) or clamping plate (62). A support seat (611) is provided on the fixed seat (61) or clamping plate (62) adjacent to the drive plate (821). The lifting assembly (9) includes a fixed rack (91) vertically arranged on the support seat (611), a drive gear (92) rotatably arranged on the drive plate (821), and a servo motor (93) that drives several drive gears (92) to rotate synchronously. The drive gears (92) correspond one-to-one with the rack and rotate in mesh.

2. The side plate welding equipment for a soft-pack battery cell according to claim 1, characterized in that... The air guide strip (71) is made of copper.

3. The side plate welding equipment for a soft-pack battery cell according to claim 1, characterized in that, An elastic reset member (811) is sleeved on the auxiliary push rod (81). The elastic reset member (811) is slidably disposed inside the air guide strip (71). When the elastic reset member (811) is in its natural state, the adjusting plate (712) is fitted against the side wall of the air guide nozzle (711) on the side away from the workpiece.

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