Sealing nail welding device for lithium battery

Abstract

The utility model relates to a sealing nail welding device for a lithium battery, and relates to the technical field of lithium battery manufacturing, in order to solve the problem that an existing welding device is inaccurate in positioning, the sealing nail welding device for the lithium battery comprises a workbench, a rack is arranged on the workbench, a welding machine used for welding is arranged on the rack, and a clamp mechanism used for fixing is further arranged on the rack. The clamp mechanism comprises a first clamp plate, a second clamp plate and a clamp air cylinder, the first clamp plate is fixedly connected to the top of the rack, the first clamp plate corresponds to the second clamp plate, a plurality of semicircular holes used for fixing are formed in the first clamp plate and the second clamp plate, the clamp air cylinder is connected to the rack, and the clamp air cylinder is connected to the rack. The output end of the clamp air cylinder is connected to the second clamp plate, a positioning mechanism used for positioning is arranged on the workbench, and the effects that the positioning accuracy of the lithium battery is improved, and the situation that the welding position deviates from the ideal position is reduced are achieved.

Description

Technical Field

[0001] The present application relates to the technical field of lithium battery manufacturing, and in particular to a sealing nail welding device for lithium batteries. Background Art

[0002] Lithium batteries, as the core components of modern energy storage technology, are directly related to the performance of various electronic products and the sustainable development of new energy vehicles and other industries. In the production process of lithium batteries, each process plays a vital role, and sealing nail welding, as a key link, is an important guarantee to ensure battery safety performance and long-term stability.

[0003] In the related art, due to the small size of the battery casing and the sealing pins, as well as the uncertainty in the operation process, the existing lithium battery sealing pin welding devices often have the problem of inaccurate positioning. The welding position deviates from the ideal position. Even a slight deviation may cause welding defects, which in turn affects the overall quality and performance of the battery, so it needs to be improved. Utility Model Content

[0004] In order to solve the problem of inaccurate positioning of existing welding devices, the present application provides a sealing nail welding device for a lithium battery.

[0005] The present application provides a lithium battery sealing nail welding device that adopts the following technical solution:

[0006] A sealing nail welding device for lithium batteries, comprising a workbench, a frame is arranged on the workbench, a welding machine for welding is arranged on the frame, a fixture mechanism for fixing is also arranged on the frame, the fixture mechanism comprises a first fixture plate, a second fixture plate and a fixture cylinder, the first fixture plate is fixedly connected to the top of the frame, the first fixture plate corresponds to the second fixture plate, a plurality of semicircular holes for fixing are opened on the first fixture plate and the second fixture plate, the fixture cylinder is connected to the frame, and the output end of the fixture cylinder is connected to the second fixture plate;

[0007] The workbench is provided with a positioning mechanism for positioning, and the positioning mechanism includes a positioning frame, a servo motor, a positioning turntable and a plurality of positioning plates. The positioning frame is connected to the workbench, and the positioning frame is arranged on one side of the frame. The servo motor is connected to the positioning frame, and the servo motor is arranged at the center of the positioning turntable. The plurality of positioning plates are arranged in sequence along the circumferential direction of the positioning turntable, and each of the positioning plates is provided with a positioning notch for positioning the welding machine. The workbench is also provided with a feeding mechanism for feeding.

[0008] Due to the small size of the battery casing and the sealing nails, as well as the uncertainty during operation, the existing lithium battery sealing nail welding devices often have the problem of inaccurate positioning, and the welding position deviates from the ideal position. Even a slight deviation may cause welding defects, which in turn affects the overall quality and performance of the battery; by adopting the above technical scheme, the welding machine and the clamp mechanism are installed on the frame, the clamp mechanism includes a first clamp plate, a second clamp plate and a clamp cylinder, the positioning mechanism and the feeding mechanism are installed on the workbench, the positioning mechanism includes a positioning frame, a servo motor, a positioning turntable and a plurality of positioning plates; when the lithium battery sealing nails are welded, the feeding mechanism continuously feeds, and after the assembled lithium battery casing and the sealing nails reach the specified position, the clamp cylinder extends to push the second clamp plate The tool plate moves toward the first fixture plate, and the semicircular holes on the first fixture plate and the second fixture plate cooperate and match the shape of the lithium battery shell. After being fixed, the servo motor works, and the positioning turntable drives the positioning plate to rotate. When the positioning turntable rotates to make the notch of one of the positioning plates face the welding position of the welding machine, the welding machine starts welding. The settings of the fixture mechanism, the positioning mechanism and the feeding mechanism help to improve the positioning accuracy of the lithium battery, reduce the situation where the welding position deviates from the ideal position, and always maintain stability during the welding process to ensure the quality and effect of the welding, thereby improving the overall quality and performance of the battery. At the same time, the welding operation is automated to enhance the operating safety, and there is no need for frequent manual operation or waiting, which shortens the welding cycle of a single lithium battery and improves production efficiency.

[0009] Optionally, the positioning turntable is provided with a plurality of extension plates for adjusting the extension length of the positioning plate, and the plurality of extension plates correspond one-to-one to the plurality of positioning plates, and the plurality of extension plates are arranged sequentially along the circumferential direction of the positioning turntable, one end of the extension plate is connected to the positioning turntable, and the other end of the extension plate is connected to the positioning plate.

[0010] By adopting the above technical solution, the extension plate is installed between the positioning turntable and the corresponding positioning plate; through the setting of the extension plate, it can better adapt to lithium battery casings of different sizes and shapes, has good versatility, helps to improve positioning accuracy and stability, and ensure welding quality and ease of operation.

[0011] Optionally, a strip groove is formed through the extension plate, and a fixing bolt for fixing to the positioning plate is arranged in the strip groove.

[0012] By adopting the above technical solution, the strip groove is opened on the extension plate, and the extension plate and the positioning plate are fixed by fixing bolts; through the setting of the strip groove and the fixing bolts, the installation stability between the positioning plate and the extension plate is enhanced, ensuring that the positioning plate always maintains an accurate position and posture, thereby improving welding quality and production efficiency, and facilitating maintenance and replacement.

[0013] Optionally, the feeding mechanism includes a feeding rack, a feeding plate, a feeding cylinder and a pushing assembly for pushing materials, the rack is provided with a through slot for materials to pass through, the feeding cylinder is arranged on a workbench, the feeding cylinder is located under the rack, the feeding rack is connected to the output end of the feeding cylinder, the feeding plate is connected to the top of the feeding rack, and the pushing assembly is connected to the feeding plate.

[0014] By adopting the above technical scheme, the feeding mechanism includes a feeding rack, a feeding plate, a feeding cylinder and a pushing assembly; when welding the lithium battery sealing nails, the assembled lithium battery shell and the sealing nail are placed on the feeding plate in advance, the feeding cylinder is actuated, and the feeding cylinder drives the feeding rack to move upward, and the assembled lithium battery shell and the sealing nail extend from the through groove. After the clamp mechanism is fixed, positioning and welding operations are performed. After a single welding is completed, the clamp mechanism is reset, and the pushing mechanism works, so that the next lithium battery shell and sealing nail are welded; the setting of the feeding rack, the feeding plate, the feeding cylinder and the pushing assembly helps to realize the automatic feeding of the lithium battery shell and the sealing nail, reduce the steps of manual operation, improve the degree of automation of the production line, realize continuous production, reduce the waiting time in the production process, and thus improve production efficiency.

[0015] Optionally, a guide rod and a guide block are provided on the workbench, the guide rod is vertically arranged on the workbench, one end of the guide rod is connected to the workbench, the other end of the guide rod is connected to the frame, the guide block is slidably connected to the guide rod, and the guide block is fixedly connected to the feed rack.

[0016] By adopting the above technical solution, the guide rod is installed on the workbench, and the guide block is slidably connected to the guide rod; when the feeding cylinder drives the feeding rack to move upward, the guide block slides on the guide rod; through the setting of the guide block and the guide rod, a stable support and guide path is provided for the feeding rack, ensuring the stability of the feeding rack during the up and down movement, effectively reducing the shaking or deviation that may occur in the feeding rack during the movement, and increasing the stability of the feeding mechanism.

[0017] Optionally, a pad for connection is provided between the guide block and the feeding rack, one end of the pad is connected to the side wall of the feeding rack, and the other end of the feeding rack is connected to the pad.

[0018] By adopting the above technical solution, the pad is installed between the guide block and the feed rack; through the setting of the pad, the pad has a certain thickness, and the gap between the guide block and the feed rack can be easily adjusted. The pad serves as a connecting piece between the guide block and the feed rack, which increases the contact area between the two, thereby improving the stability of the connection, helping to reduce the possible shaking or deviation of the feed rack during movement, and ensuring that the feeding mechanism can work smoothly and accurately.

[0019] Optionally, the pushing assembly includes a pushing cylinder, a pushing slider and a pushing rail, the pushing rail is fixedly arranged on the feeding rack, the pushing slider is slidably connected to the pushing rail, the feeding plate is fixedly connected to the top of the pushing slider, the pushing cylinder is arranged on the feeding rack, and the output end of the pushing cylinder is connected to the feeding plate.

[0020] By adopting the above technical scheme, the pushing assembly includes a pushing cylinder, a pushing slider and a pushing rail; before welding the next assembled lithium battery shell and sealing pin, the pushing cylinder is actuated, and the pushing slider slides on the pushing rail, so that the feed plate moves a corresponding distance; through the setting of the pushing cylinder, the pushing slider and the pushing rail, the corresponding distance can be accurately moved to ensure that the lithium battery shell and the sealing pin are accurately pushed to the welding position, ready for the next assembly cycle, which helps to improve the production efficiency of the entire welding device and improve the automation level of the device.

[0021] Optionally, a discharge port corresponding to a feed plate is provided on one side of the frame, and a discharge plate is obliquely arranged at the discharge port.

[0022] By adopting the above technical solution, a discharge port is opened on the frame, and a discharge plate is installed at the discharge port; when the welding of a single lithium battery shell and a sealing nail is completed, the pushing assembly pushes the lithium battery shell and the sealing nail to be welded to the welding station, and the welded lithium battery shell and the sealing nail are poured out from the discharge plate; through the setting of the discharge port and the discharge plate, it is ensured that the lithium battery shell can slide smoothly along the inclined surface, avoiding jamming or collision caused by right angles or sudden changes, making the collection of lithium battery shells simpler and more convenient, avoiding the occurrence of stacking, improving work efficiency and reducing labor intensity.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] The fixture mechanism, positioning mechanism and feeding mechanism are used to improve the positioning accuracy of lithium batteries, reduce the deviation of welding positions from the ideal position, and keep stable during welding to ensure the quality and effect of welding, thus improving the overall quality and performance of the battery. At the same time, the welding operation is automated to enhance the safety of operation, and there is no need for frequent manual operation or waiting, thus shortening the welding cycle of a single lithium battery and improving production efficiency.

[0025] The arrangement of the feeding rack, feeding plate, feeding cylinder and pushing assembly helps to realize the automatic feeding of lithium battery shells and sealing nails, reduces the steps of manual operation, improves the automation degree of the production line, realizes continuous production, reduces the waiting time in the production process, and thus improves production efficiency;

[0026] By setting the push cylinder, push slider and push rail, the corresponding distance can be moved accurately to ensure that the lithium battery shell and sealing pins are accurately pushed to the welding position to prepare for the next assembly cycle, which helps to improve the production efficiency of the entire welding device and improve the automation level of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of a sealing nail welding device for a lithium battery in an embodiment of the present application.

[0028] Figure 2 It is a partial cross-sectional view used to illustrate the structure of the feeding mechanism in the embodiment of the present application.

[0029] Figure 3 It is a structural schematic diagram used to embody the positioning mechanism in the embodiment of the present application.

[0030] Figure 4 yes Figure 3 A magnified view of part A.

[0031] Explanation of the accompanying drawings: 1. workbench; 2. frame; 21. through slot; 22. discharge port; 23. discharge plate; 3. welding machine; 4. clamp mechanism; 41. first clamp plate; 42. second clamp plate; 43. clamp cylinder; 5. semicircular hole; 6. positioning mechanism; 61. positioning frame; 62. servo motor; 63. positioning turntable; 64. positioning plate; 7. positioning notch; 8. feeding mechanism; 81. feeding frame; 82. feeding plate; 83. feeding cylinder; 84. pushing assembly; 841. pushing cylinder; 842. pushing slider; 843. pushing slide rail; 9. extension plate; 91. strip groove; 92. fixing bolt; 10. guide rod; 11. guide block; 12. pad. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The present application embodiment discloses a sealing nail welding device for lithium batteries. Figure 1 The sealing nail welding device for lithium batteries includes a workbench 1, a frame 2 is installed on the workbench 1, a welding machine 3 is installed on the frame 2, and in this embodiment, the welding machine 3 is used to complete the welding of the lithium battery shell and the sealing nail, and a feeding mechanism 8 is installed on the workbench 1. The feeding mechanism 8 is arranged at the bottom of the frame 2, and a through groove 21 is opened on the frame 2. The through groove 21 is arranged along the length direction of the frame 2, and the through groove 21 can be passed through by the feeding mechanism 8.

[0034] Reference Figure 1 and Figure 2The feeding mechanism 8 includes a feeding rack 81, a feeding plate 82, a feeding cylinder 83 and a pushing assembly 84. The feeding cylinder 83 is installed on the workbench 1. The feeding cylinder 83 is located directly below the frame 2. The feeding cylinder 83 is vertically installed in the height direction of the frame 2. The feeding rack 81 is installed on the output end of the feeding cylinder 83. The feeding cylinder 83 drives the feeding rack 81 to move up and down.

[0035] Reference Figure 1 and Figure 2 A guide rod 10 is installed on the workbench 1, and the guide rod 10 is installed along the height direction of the frame 2. One end of the guide rod 10 is installed on the workbench 1, and the other end of the guide rod 10 is installed on the frame 2. A guide block 11 is slidably installed on the guide rod 10, and a pad 12 is installed on the end wall of the guide block 11. The pad 12 is fixedly connected to the side wall of the feeding rack 81. In this embodiment, the number of guide rods 10 and guide blocks 11 is multiple groups, which are used to provide a stable support and guide path for the feeding rack 81, ensuring the stability of the feeding rack 81 during the up and down movement, effectively reducing the shaking or deviation of the feeding rack 81 that may occur during the movement, and increasing the stability of the feeding mechanism 8.

[0036] Reference Figure 1 and Figure 2 The pushing assembly 84 is arranged on the feeding rack 81, and the pushing assembly 84 includes a pushing cylinder 841, a pushing slider 842 and a pushing rail 843. The pushing rail 843 is installed and fixed on the feeding rack 81, and the pushing rail 843 is installed along the length direction of the feeding rack 81. In this embodiment, the length direction of the feeding rack 81 is consistent with the length direction of the frame 2. The pushing slider 842 is slidably connected to the pushing rail 843, and the feeding plate 82 is installed and fixed on the top of the pushing rail 843. The pushing cylinder 841 is installed at one end of the length direction of the pushing rail 843, and the output end of the pushing cylinder 841 is installed on the feeding plate 82. In this embodiment, the feeding plate 82 is provided with a slot for fixing the lithium battery shell to be welded; it is used to accurately move the corresponding distance to ensure that the lithium battery shell and the sealing nail are accurately pushed to the welding position to prepare for the next assembly cycle, which helps to improve the production efficiency of the entire welding device and improve the automation level of the device.

[0037] Reference Figure 1 and Figure 2 In this embodiment, a discharge port 22 is provided on one side of the frame 2 close to the welding machine 3. The discharge port 22 corresponds to the pushing direction of the pushing assembly 84. A discharge plate 23 is obliquely installed at the discharge port 22, ensuring that the lithium battery shell after welding can slide smoothly along the inclined surface, avoiding jamming or collision caused by right angles or sudden changes, making the collection of lithium battery shells simpler and more convenient, avoiding the occurrence of stacking, improving work efficiency and reducing labor intensity.

[0038] Reference Figure 3 and Figure 4 A clamp mechanism 4 for fixing is installed on the frame 2, and the clamp mechanism 4 includes a first clamp plate 41, a second clamp plate 42 and a clamp cylinder 43. The first clamp plate 41 is fixedly installed on the frame 2, and the first clamp plate 41 is arranged along the length direction of the frame 2. The second clamp plate 42 corresponds to the first clamp plate 41. In this embodiment, the first clamp plate 41 and the second clamp plate 42 have the same size and shape. The clamp cylinder 43 is installed on the frame 2, and the output end of the clamp cylinder 43 is connected to the second clamp plate 42, so that the clamp cylinder 43 controls the second clamp plate 42 to approach or move away from the first clamp plate 41.

[0039] Reference Figure 3 and Figure 4 A plurality of semicircular holes 5 are provided on the first fixture plate 41 and the second fixture plate 42, and the plurality of semicircular holes 5 are equidistantly provided along the length direction of the first fixture plate 41 or the second fixture plate 42. In this embodiment, the spacing between adjacent semicircular holes 5 is consistent with the position of adjacent lithium battery shells to be welded on the feed plate 82, and the corresponding semicircular holes 5 on the first fixture plate 41 and the second fixture plate 42 cooperate to match the shape of the lithium battery shell to achieve the fixation of the lithium battery shell.

[0040] Reference Figure 3 and Figure 4 A positioning mechanism 6 is also installed on the workbench 1. The positioning mechanism 6 includes a positioning frame 61, a servo motor 62, a positioning turntable 63 and a plurality of positioning plates 64. The positioning frame 61 is fixed on the workbench 1. The servo motor 62 is vertically arranged on the positioning frame 61. The output end of the servo motor 62 is installed at the center of the positioning turntable 63.

[0041] Reference Figure 3 and Figure 4 A plurality of extension plates 9 are installed on the positioning turntable 63, and the number of the plurality of extension plates 9 is consistent with the number of the plurality of positioning plates 64. The plurality of extension plates 9 are installed sequentially along the circumferential direction of the positioning turntable 63, one end of the extension plate 9 is installed and fixed on the positioning turntable 63, and the other end of the extension plate 9 is installed with the corresponding positioning plate 64.

[0042] Reference Figure 3 and Figure 4 A strip groove 91 is formed through the extension plate 9. In this embodiment, a corresponding through hole is formed on the positioning plate 64. A fixing bolt 92 is installed on the extension plate 9. The fixing bolt 92 passes through the strip groove 91 and the inner wall of the corresponding through hole, thereby realizing the installation of the extension plate 9 and the positioning plate 64. The extension plate 9 is used to better adapt to lithium battery shells of different sizes and shapes, has good versatility, helps to improve positioning accuracy and stability, and ensures welding quality and ease of operation.

[0043] Reference Figure 3 and Figure 4 A positioning notch 7 is provided on each positioning plate 64. The positioning notch 7 is provided on a side of the positioning plate 64 away from the positioning turntable 63. The positioning notch 7 is directly opposite to the welding position of the welding machine 3, so as to improve the positioning accuracy of the lithium battery and reduce the situation where the welding position deviates from the ideal position.

[0044] The implementation principle of a sealing nail welding device for lithium batteries in an embodiment of the present application is as follows: when welding the sealing nails of the lithium battery, the feeding cylinder 83 is actuated, and the feeding cylinder 83 drives the feeding rack 81 to move upward, and the assembled lithium battery shell and the sealing nail extend from the through groove 21, and the clamp cylinder 43 extends to push the second clamp plate 42 to move toward the first clamp plate 41, and the semicircular holes 5 on the first clamp plate 41 and the second clamp plate 42 cooperate and match the shape of the lithium battery shell. After fixing, the servo motor 62 works, and the positioning turntable 63 drives the positioning plate 64 to rotate. When the positioning turntable 63 rotates to make the positioning notch 7 of one of the positioning plates 64 face the welding position of the welding machine 3, the welding machine 3 starts welding. After the welding of a single lithium battery shell is completed, the clamp cylinder 43 is pressed again. The pushing cylinder 841 is in position, and the pushing slider 842 slides on the pushing slide rail 843, so that the feeding plate 82 moves a corresponding distance, so that the next lithium battery shell and the sealing nail are in the welding position, and the above-mentioned fixing, positioning and welding processes are repeated. At the same time, the lithium battery shell after welding is discharged from the discharge plate 23; the settings of the clamping mechanism 4, the positioning mechanism 6 and the feeding mechanism 8 help to improve the positioning accuracy of the lithium battery, reduce the situation where the welding position deviates from the ideal position, and always maintain stability during the welding process to ensure the quality and effect of the welding, thereby improving the overall quality and performance of the battery. At the same time, the welding operation is automated to enhance the operating safety, and there is no need for frequent manual operation or waiting, which shortens the welding cycle of a single lithium battery and improves production efficiency.

[0045] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A sealing nail welding device for lithium batteries, comprising a workbench (1), characterized in that: The workbench (1) is provided with a frame (2), a welding machine (3) for welding is provided on the frame (2), and a fixture mechanism (4) for fixing is also provided on the frame (2), the fixture mechanism (4) comprising a first fixture plate (41), a second fixture plate (42) and a fixture cylinder (43), the first fixture plate (41) is fixedly connected to the top of the frame (2), the first fixture plate (41) corresponds to the second fixture plate (42), a plurality of semicircular holes (5) for fixing are provided on the first fixture plate (41) and the second fixture plate (42), the fixture cylinder (43) is connected to the frame (2), and the output end of the fixture cylinder (43) is connected to the second fixture plate (42); The workbench (1) is provided with a positioning mechanism (6) for positioning, the positioning mechanism (6) comprising a positioning frame (61), a servo motor (62), a positioning turntable (63) and a plurality of positioning plates (64), the positioning frame (61) being connected to the workbench (1), the positioning frame (61) being arranged at one side of the frame (2), the servo motor (62) being connected to the positioning frame (61), the servo motor (62) being arranged at the center of the positioning turntable (63), the plurality of positioning plates (64) being arranged in sequence along the circumferential direction of the positioning turntable (63), each of the positioning plates (64) being provided with a positioning notch (7) for positioning the welding machine (3), and the workbench (1) being further provided with a feeding mechanism (8) for feeding materials.

2. A sealing nail welding device for lithium batteries according to claim 1, characterized in that: The positioning turntable (63) is provided with a plurality of extension plates (9) for adjusting the extension length of the positioning plate (64), the plurality of extension plates (9) correspond one to one with the plurality of positioning plates (64), the plurality of extension plates (9) are arranged in sequence along the circumferential direction of the positioning turntable (63), one end of the extension plate (9) is connected to the positioning turntable (63), and the other end of the extension plate (9) is connected to the positioning plate (64).

3. A sealing nail welding device for lithium batteries according to claim 2, characterized in that: The extension plate (9) is provided with a strip groove (91) extending therethrough, and a fixing bolt (92) for fixing to the positioning plate (64) is arranged in the strip groove (91).

4. A sealing nail welding device for lithium battery according to claim 1, characterized in that: The feeding mechanism (8) comprises a feeding frame (81), a feeding plate (82), a feeding cylinder (83) and a pushing assembly (84) for pushing materials. The frame (2) is provided with a through slot (21) for materials to pass through. The feeding cylinder (83) is arranged on the workbench (1). The feeding cylinder (83) is located below the frame (2). The feeding frame (81) is connected to the output end of the feeding cylinder (83). The feeding plate (82) is connected to the top of the feeding frame (81). The pushing assembly (84) is connected to the feeding plate (82).

5. A sealing nail welding device for lithium batteries according to claim 4, characterized in that: The workbench (1) is provided with a guide rod (10) and a guide block (11); the guide rod (10) is vertically arranged on the workbench (1); one end of the guide rod (10) is connected to the workbench (1); the other end of the guide rod (10) is connected to the frame (2); the guide block (11) is slidably connected to the guide rod (10); and the guide block (11) is fixedly connected to the feed rack (81).

6. A sealing nail welding device for lithium batteries according to claim 5, characterized in that: A pad (12) for connection is provided between the guide block (11) and the feeding rack (81); one end of the pad (12) is connected to the side wall of the feeding rack (81), and the other end of the feeding rack (81) is connected to the pad (12).

7. A sealing nail welding device for lithium batteries according to claim 4, characterized in that: The pushing assembly (84) comprises a pushing cylinder (841), a pushing slider (842) and a pushing rail (843); the pushing rail (843) is fixedly arranged on the feeding rack (81); the pushing slider (842) is slidably connected to the pushing rail (843); the feeding plate (82) is fixedly connected to the top of the pushing slider (842); the pushing cylinder (841) is arranged on the feeding rack (81); and the output end of the pushing cylinder (841) is connected to the feeding plate (82).

8. A sealing nail welding device for lithium batteries according to claim 4, characterized in that: A discharge port (22) corresponding to a feed plate (82) is provided on one side of the frame (2), and a discharge plate (23) is obliquely arranged at the discharge port (22).

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