Automatic butt-welding machine for lithium battery

Abstract

The invention relates to the technical field of lithium battery processing, in particular to an automatic lithium battery butt-welding machine which comprises a workbench, two welding mechanisms are arranged on the workbench, a material conveying mechanism is arranged on one side of each welding mechanism, an overturning mechanism is arranged between the two welding mechanisms, and a negative electrode vibration disc is arranged on one side of each material conveying mechanism. A belt conveyor is further arranged on the top of the workbench. The device is novel in structure, welding of the front face and the back face of a battery is completed at a time, repeated operation and time consumption in the production process are greatly reduced, the overall working efficiency of a production line is remarkably improved, labor cost is reduced, welding quality and consistency are improved, stable battery performance is ensured, production errors and flaws are reduced, meanwhile, the rejection rate is reduced, and the production efficiency is improved. And batteries with different specifications can be flexibly handled.

Description

Technical Field

[0001] The invention relates to the technical field of lithium battery processing, in particular to an automatic lithium battery welding machine. Background Art

[0002] As the global demand for electric vehicles, renewable energy storage devices and portable electronic products continues to grow, the market demand for lithium batteries is increasing. As an important component of energy storage devices, lithium batteries require efficient and precise equipment to weld battery cells during their production process. Automated welding machines play an important role in lithium battery manufacturing, especially in the connection between lithium battery electrodes and battery cells, ensuring the performance and safety of the battery. However, although automatic welding machines are widely used in lithium battery production lines, there are still some shortcomings that cannot be ignored, which affect their efficiency and welding quality.

[0003] 1. Unstable welding accuracy: The welding accuracy of the automatic welding machine is one of the key factors in lithium battery production. Although some high-end automatic welding machines are equipped with precise control systems, in the actual production process, the welding accuracy may be affected by multiple factors such as current fluctuations, welding time errors, and fixture position deviations, resulting in unstable welding quality, which in turn affects the battery life and safety.

[0004] 2. Equipment complexity and maintenance difficulties: The structure of the automatic welding machine is usually complex, involving sophisticated electrical, mechanical and control systems. The complexity of the equipment makes its maintenance more difficult, especially in terms of equipment wear after long-term operation, replacement of welding heads and system debugging, which may increase production downtime and reduce production efficiency.

[0005] 3. Structural design limitations: Existing automatic welding machines for lithium batteries are usually designed as single-sided welding systems, which means that they can only weld one side of the battery. Since automatic welding machines cannot achieve double-sided welding, it is usually necessary to weld the two sides of the battery separately through two different operations. This not only increases the production cycle, but also increases the labor cost and operational complexity in the production process. If the demand for double-sided welding cannot be completed automatically, the efficiency of the production line will decrease, limiting the improvement of production capacity. In the double-sided welding process of the battery, if full automation cannot be achieved, it may cause problems with uneven welding quality. One side of the welding may affect the other side, especially at high temperatures, and the expansion of the heat-affected zone may have an adverse effect on the overall performance of the battery. If manual intervention or multiple adjustments to the equipment parameters are required, the accuracy and quality of the welding are easily controlled, which in turn affects the service life and safety of the battery. No solutions have been proposed for related technical issues. Summary of the invention

[0006] In view of the problems in the related technology, the present invention proposes an automatic lithium battery welding machine to overcome the above-mentioned technical problems existing in the existing related technology. The purpose of the present invention is to realize the welding of the front and back sides of the battery at one time, which greatly reduces the repeated operations and time consumption in the production process, significantly improves the overall work efficiency of the production line, reduces labor costs, improves welding quality and consistency, ensures stable battery performance, reduces production errors and defects, and at the same time reduces the scrap rate, and flexibly responds to batteries of different specifications.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a lithium battery automatic butt welding machine, comprising a workbench, wherein two groups of welding mechanisms are arranged on the workbench, wherein the welding mechanism comprises a support plate, a butt welding machine, a material module and a second cylinder, wherein the support plate is installed on the workbench, the butt welding machine is installed on the top side of the support plate, the material module is arranged on the support plate and movably connected with the support plate, the second cylinder is installed on the support plate, the output end of the second cylinder is connected with the material module, a material feeding mechanism is arranged on one side of the two groups of the welding mechanisms, the material feeding mechanism comprises a driving motor, a turntable, a rotating plate and a battery cell suction nozzle, the driving motor is installed on the workbench, the bottom center of the turntable is fixedly connected with the output end of the driving motor, a plurality of rotating plates are arranged, and are distributed on the turntable in a circular shape and equidistantly, the battery cell suction nozzle is installed on the rotating plate, and a turning mechanism is arranged between the two groups of the welding mechanisms.

[0008] Preferably, the turning mechanism includes cylinder three, a rack, a gear, a support, a rotating rod and a cylinder clamp, wherein the cylinder three and the support are installed on a workbench, the cylinder clamp is fixedly installed on the rotating rod, one end of the rotating rod is movably connected to the support, the other end of the rotating rod passes through the support and extends to the outside of the support, and the end is fixedly connected to the gear, the output end of the cylinder three is connected to the rack, and the rack and the gear are meshed.

[0009] Preferably, a negative electrode vibration disk is provided on one side of the material conveying mechanism.

[0010] Preferably, a belt conveyor is also provided on the top of the workbench.

[0011] Preferably, the belt conveyor is provided with a material suction mechanism.

[0012] Preferably, a box is provided at the bottom of the workbench, and universal wheels are provided around the bottom of the box.

[0013] Preferably, the material suction mechanism comprises a cylinder 1 and a suction cup, the cylinder 1 is installed on a belt conveyor, and the suction cup is installed at the output end of the cylinder 1.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The present invention is an automatic lithium battery welding machine. By setting a welding mechanism, a material feeding mechanism and a turning mechanism, the welding of the front and back sides of the battery can be completed at one time, thereby reducing repeated operations and time consumption in the production process. Double-sided welding reduces manual intervention and improves the overall work efficiency of the production line. Since double-sided automatic welding reduces manual operation and adjustment, the enterprise does not need to invest a large amount of manual resources to complete two welding operations. The automation of the welding process can significantly reduce labor costs, especially in large-scale production, saving the cost and time of operators, and can maintain stable welding parameters (such as current, time, pressure, etc.) to ensure that each welding meets the set standards. Compared with manual welding, the automated system can effectively avoid inconsistent welding quality caused by human factors, improve the accuracy and consistency of welding, reduce the generation of unqualified products, and avoid the need for additional equipment or multiple equipment transfers. It not only saves the space of the production line, but also reduces the purchase cost, installation cost and maintenance cost of additional equipment, significantly improves production efficiency and output, and thus improves the overall production capacity. It can accurately control the heat input during the welding process to avoid the degradation of battery performance due to excessive or uneven heat. Through double-sided welding, it can ensure good contact between the positive and negative poles of the battery, improve the consistency and long-term service life of the battery, thereby enhancing the reliability and safety of the product, minimize these human factors, reduce welding errors, ensure the consistency and reliability of the battery when leaving the factory, and can adapt to the welding needs of lithium batteries of different types, sizes and materials. The production line can flexibly switch between different products, which improves the adaptability and flexibility of the production line. Compared with manual welding or semi-automatic welding, automated welding can ensure stable welding quality, thereby reducing battery returns or scrapping due to poor welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the workbench of the present invention.

[0018] In the accompanying drawings, the following are marked: 1. workbench; 2. belt conveyor; 3. cylinder one; 4. suction cup; 5. support plate; 6. butt welding machine; 7. material module; 8. cylinder two; 9. negative electrode vibration plate; 10. driving motor; 11. turntable; 12. rotating plate; 13. battery cell suction nozzle; 14. cylinder three; 15. rack; 16. gear; 17. support; 18. rotating rod; 19. cylinder clamp; 20. box body. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0020] Example

[0021] See also Figure 1-2 The present invention proposes a technical solution of an automatic butt welding machine for lithium batteries: an automatic butt welding machine for lithium batteries, comprising a workbench 1, on which two groups of welding mechanisms are arranged, the welding mechanisms comprising a support plate 5, a butt welding machine 6, a material module 7 and a second cylinder 8, the support plate 5 is mounted on the workbench 1, the butt welding machine 6 is mounted on one side of the top of the support plate 5, the material module 7 is arranged on the support plate 5 and is movably connected with the support plate 5, the second cylinder 8 is mounted on the support plate 5, and the output end of the second cylinder 8 is connected with the material module 7, specifically, the support plate 5 plays a supporting role, the butt welding machine 6 is used to weld the battery, and the second cylinder 8 is started to drive the material module 7 to move to the left or right, and the material module 7 is used to support the battery to be processed and can move it; one side of the two groups of welding mechanisms is provided with The material conveying mechanism includes a driving motor 10, a turntable 11, a rotating plate 12 and a battery cell suction nozzle 13. The driving motor 10 is installed on the workbench 1. The bottom center of the turntable 11 is fixedly connected to the output end of the driving motor 10. There are several rotating plates 12, which are equidistantly distributed on the turntable 11 in a circular shape. The battery cell suction nozzle 13 is installed on the rotating plate 12. Specifically, the driving motor 10 is started to drive the turntable 11 to rotate clockwise or counterclockwise. When the turntable 11 rotates, it drives the rotating plate 12 and the battery cell suction nozzle 13 to rotate. The battery cell suction nozzle 13 is used to absorb or release the battery cell to facilitate its movement. A flipping mechanism is provided between the two sets of welding mechanisms. Specifically, the flipping mechanism can realize the flanging of the battery cell and realize double-sided welding.

[0022] See also Figure 1-2 As shown, further, the turning mechanism includes a cylinder three 14, a rack 15, a gear 16, a support 17, a rotating rod 18 and a cylinder clamp 19. The cylinder three 14 and the support 17 are both installed on the workbench 1, and the cylinder clamp 19 is fixedly installed on the rotating rod 18. One end of the rotating rod 18 is movably connected to the support 17, and the other end of the rotating rod 18 passes through the support 17 and extends to the outside of the support 17, and the end is fixedly connected to the gear 16. The output end of the cylinder three 14 is connected to the rack 15, and the rack 15 and the gear 16 are meshed.

[0023] In this embodiment, the support 17 serves to support the rotating rod 18. The cylinder 3 14 is started to drive the rack 15 to move. When the rack 15 moves, it drives the gear 16 meshing with it to rotate. When the gear 16 rotates, it drives the rotating rod 18 fixedly connected to it to rotate, thereby facilitating the adjustment of the position of the cylinder clamp 19. The cylinder clamp 19 can be used to clamp the processed battery cells.

[0024] See also Figure 1-2 As shown, further, a negative electrode vibration plate 9 is provided on one side of the material conveying mechanism.

[0025] In this embodiment, the negative electrode vibration plate 9 is used to automatically transport and position negative electrode materials (such as negative electrode sheets, battery cells, etc.) to improve convenience.

[0026] See also Figure 1 As shown, further, a belt conveyor 2 is also provided on the top of the workbench 1.

[0027] In this embodiment, the belt conveyor 2 is used to convey the processed products.

[0028] See also Figure 1 As shown, further, a material suction mechanism is provided on the belt conveyor 2.

[0029] In this embodiment, the suction mechanism realizes automation to move the product onto the belt conveyor 2 .

[0030] See also Figure 1 As shown, further, a box body 20 is provided at the bottom of the workbench 1, and universal wheels are provided around the bottom of the box body 20.

[0031] In this embodiment, universal wheels are provided to facilitate the movement of the workbench 1 .

[0032] See also Figure 1 As shown, further, the material suction mechanism includes a cylinder 3 and a suction cup 4, the cylinder 3 is installed on the belt conveyor 2, and the suction cup 4 is installed at the output end of the cylinder 3.

[0033] In this embodiment, starting the cylinder 3 can drive the suction cup 4 to move. The suction cup 4 adopts the existing technology and is used to absorb and release the processed products.

[0034] Working principle of the present invention:

[0035] The product to be processed in a negative electrode vibration plate 9 is placed on a welding mechanism through a material conveying mechanism, and the driving motor 10 is started to drive the turntable 11 to rotate clockwise. When the turntable 11 rotates, it drives the rotating plate 12 and the battery cell suction nozzle 13 to rotate. The battery cell suction nozzle 13 is used to suck the battery cell and place it on the material module 7. The welding machine 6 is used to weld the battery. The cylinder 2 8 is started to drive the material module 7 to move to the left. The material module 7 is used to support the battery to be processed and can be moved. After one side of the product is processed, it is moved to another welding position through the flipping mechanism. The other side of the mechanism is processed, and the cylinder 3 14 is started to drive the rack 15 to move. When the rack 15 moves, it drives the gear 16 meshing with it to rotate. When the gear 16 rotates, it drives the rotating rod 18 fixedly connected with it to rotate, so as to facilitate the adjustment of the position of the cylinder clamp 19. The cylinder clamp 19 can be used to clamp and release the processed battery sheet. After the processing is completed, the cylinder 3 is started to drive the suction cup 4 to move, and the suction cup 4 absorbs the processed product onto the belt conveyor 2 and releases it. The belt conveyor 2 is used to transport the processed products.

[0036] The present invention can complete the welding of both sides of the battery at one time, greatly reducing repeated operations and time consumption in the production process. Double-sided welding reduces manual intervention and can significantly improve the overall work efficiency of the production line. Since double-sided automated welding reduces manual operation and adjustment, the company does not need to invest a large amount of manual resources to complete two welding operations. The automation of the welding process can significantly reduce labor costs, especially in large-scale production, saving operators' costs and time, and maintaining stable welding parameters (such as current, time, pressure, etc.) to ensure that each welding meets the set standards. Compared with manual welding, the automated system can effectively avoid inconsistent welding quality caused by human factors, improve welding accuracy and consistency, reduce the generation of unqualified products, and avoid the need for additional equipment or multiple equipment transfers, which not only saves the production line space It saves space and reduces the purchase cost, installation cost and maintenance cost of additional equipment, significantly improves production efficiency and output, and thus improves overall production capacity. It can accurately control the heat input during welding to avoid degradation of battery performance due to excessive or uneven heat. Through double-sided welding, it can ensure good contact between the positive and negative poles of the battery, improve the consistency and long-term service life of the battery, thereby enhancing the reliability and safety of the product, minimize these human factors, reduce welding errors, ensure the consistency and reliability of the battery when leaving the factory, and can adapt to the welding needs of lithium batteries of different types, sizes and materials. The production line can flexibly switch between different products, which improves the adaptability and flexibility of the production line. Compared with manual welding or semi-automatic welding, automated welding can ensure stable welding quality, thereby reducing battery returns or scrapping due to poor welding.

[0037] In the description of the present invention, it is necessary to understand that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0038] In the present invention, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the present invention according to the specific circumstances.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery automatic welding machine, characterized in that: The invention comprises a workbench (1), wherein two groups of welding mechanisms are arranged on the workbench (1), wherein the welding mechanisms comprise a support plate (5), a butt welding machine (6), a material module (7) and a second cylinder (8), wherein the support plate (5) is mounted on the workbench (1), the butt welding machine (6) is mounted on one side of the top of the support plate (5), the material module (7) is arranged on the support plate (5) and is movably connected to the support plate (5), the second cylinder (8) is mounted on the support plate (5), and the output end of the second cylinder (8) is connected to the material module (7), and the two groups of welding mechanisms are arranged on the support plate (5). A material conveying mechanism is provided on one side of the welding machine, the material conveying mechanism comprising a driving motor (10), a rotating disk (11), a rotating plate (12) and a battery cell suction nozzle (13); the driving motor (10) is mounted on the workbench (1); the bottom center of the rotating disk (11) is fixedly connected to the output end of the driving motor (10); a plurality of rotating plates (12) are provided and are equidistantly distributed on the rotating disk (11) in a circular shape; the battery cell suction nozzle (13) is mounted on the rotating plate (12); and a turning mechanism is provided between the two groups of welding mechanisms.

2. The automatic lithium battery welding machine according to claim 1, characterized in that: The turning mechanism comprises a cylinder three (14), a rack (15), a gear (16), a support (17), a rotating rod (18) and a cylinder clamp (19). The cylinder three (14) and the support (17) are both mounted on the workbench (1), the cylinder clamp (19) is fixedly mounted on the rotating rod (18), one end of the rotating rod (18) is movably connected to the support (17), the other end of the rotating rod (18) passes through the support (17) and extends to the outside of the support (17), and the end is fixedly connected to the gear (16), the output end of the cylinder three (14) is connected to the rack (15), and the rack (15) and the gear (16) are meshed.

3. The automatic lithium battery welding machine according to claim 1, characterized in that: A negative electrode vibration plate (9) is arranged on one side of the material conveying mechanism.

4. The automatic lithium battery welding machine according to claim 1, characterized in that: A belt conveyor (2) is also provided on the top of the workbench (1).

5. The automatic lithium battery welding machine according to claim 4, characterized in that: The belt conveyor (2) is provided with a material suction mechanism.

6. The automatic lithium battery welding machine according to claim 1, characterized in that: A box body (20) is arranged at the bottom of the workbench (1), and universal wheels are arranged around the bottom of the box body (20).

7. The automatic lithium battery welding machine according to claim 5, characterized in that: The material suction mechanism comprises a cylinder (3) and a suction cup (4); the cylinder (3) is mounted on a belt conveyor (2); and the suction cup (4) is mounted at the output end of the cylinder (3).

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