Laser switching tab forming and welding device for soft package lithium ion battery

Abstract

A kind of soft package lithium ion battery laser switching tab forming welding device, it relates to battery welding field, including machine table and welding assembly, feeding assembly and material guiding assembly on machine table, there is battery tank and tab tank on the machine table for placing battery body and tab body, for limiting battery body and tab body, feeding assembly and material guiding assembly are provided at the front end of tab tank, there is material groove in feeding assembly, for placing several tab bodies to be processed, there is discharge port at material groove, for releasing tab body, there is receiving table and sliding groove in material guiding assembly, the bottom end of sliding groove is communicated with tab tank, the junction of the two is provided with receiving roller;Adopt fully automated feeding, material guiding, positioning, welding integrated structure, no manual contact tab body throughout the journey, completely avoid fingerprint, sweat and other pollutants to remain on tab surface, effectively guarantee tab conductive performance, improve battery product quality and safety.

Description

Technical Field

[0001] This invention relates to the field of battery welding, and in particular to a laser adapter tab forming and welding device for soft-pack lithium-ion batteries. Background Technology

[0002] Soft-pack lithium-ion batteries are widely used in new energy vehicles, consumer electronics, and energy storage due to their advantages such as high energy density, light weight, flexible design, and good safety. Their core structure consists of positive and negative electrode plates, a separator, and an aluminum-plastic film encapsulation layer. Current needs to be drawn from the electrode plates through metal tabs, and tab welding is a key process that determines battery performance, yield, and safety.

[0003] Currently, ultrasonic welding or laser welding is the mainstream method for connecting tabs in pouch batteries. However, in actual production, due to the very thin thickness of the tabs (only 0.15~0.30mm), the connection between the stacked tab metal sheets and the pouch battery during the welding process can not be completely aligned due to shrinkage and deformation, resulting in incomplete welds and affecting the welding quality. In addition, inaccurate manual positioning can also affect the welding quality. To solve the above problems, a laser-connected tab forming and welding device for pouch lithium-ion batteries is proposed. Summary of the Invention

[0004] The purpose of this invention is to solve the problem of incomplete welding caused by the thin thickness of the tabs during the welding process of existing soft-pack lithium-ion batteries, which leads to shrinkage and deformation during welding. This misalignment between the metal sheet of the tab and the battery connection results in a poor weld.

[0005] The present invention adopts the following technical solution: A laser-assisted tab forming and welding device for soft-pack lithium-ion batteries includes a machine base and welding components, a feeding component, and a guiding component on the machine base. The machine base has a battery slot and a tab slot for placing the battery body and the tab body, and for limiting the position of the battery body and the tab body. The front end of the tab slot is provided with the feeding component and the guiding component. The feeding component has a material trough for placing a number of tab bodies to be processed. The material trough has a material outlet for releasing the tab bodies. The guiding component has a receiving platform and a slide chute. The bottom end of the slide chute is connected to the tab slot. A receiving roller is provided at the junction of the two to allow the tab bodies on the slide chute to completely enter the tab slot for welding. The battery compartment and the tab compartment are used to independently limit the battery body and the tab body, respectively, so that the two are stably pre-positioned before welding. The feeding component and the guiding component are arranged at the front end of the tab compartment, integrating the storage, supply and guiding of the tab into a continuous action. The receiving roller is used to force the tab body on the chute into the tab compartment, ensuring that the tab body is fully in place, providing a reliable foundation for subsequent precise welding.

[0006] Furthermore, the machine tool has a controller inside, which is used to control the operation of each circuit part of the overall equipment. A robotic arm is set outside the battery slot, which is used to load the battery body and remove the welded battery. The battery slot is connected to the tab slot, which is used to attach the battery body and the tab body together, waiting for subsequent welding.

[0007] The controller coordinates the actions of all components to automate the overall operation; the robotic arm is responsible for loading and unloading the battery body without manual operation, and can directly complete the loading and unloading operations; the battery slot is connected to the tab slot, so that the placed battery body can directly contact and fit with the subsequently fed tab body, establishing the correct physical contact conditions for the welding process.

[0008] Furthermore, a welding assembly is provided at the contact position between the battery body and the electrode body. The welding assembly includes a welding frame, and both ends of the welding frame are provided with lead screws. Pressure plates are sleeved on the lead screws. When the pressure plates move to the lowest end, they press against the battery body and the electrode body to reduce positional displacement caused by welding. Before welding, the pressure plate is pressed down to the lowest point by the lead screw, pressing the battery body and the tab body together at the contact position. This limits the shrinkage and deformation of the tab metal sheet that may occur due to heat during the welding process, effectively avoiding misalignment and incomplete welding, and improving the stability of the welding process.

[0009] Furthermore, the pressure plate has a through groove in the middle, which is located directly above the contact position between the battery body and the tab body. This position is exposed due to the through groove and is used for subsequent laser welding. The welding frame is also equipped with a welding plate with a welding head at the bottom. The welding plate corresponds to the position of the through groove and is raised and lowered in the through groove by a cylinder. The position of the welding head corresponds to the contact position between the battery body and the tab body and is used to laser weld the two together. The pressure plate has a slot to ensure that the clamping function and the welding channel do not interfere with each other, and that the welding head can still approach the area to be welded without obstruction even when clamped. The welding plate and welding head are lifted and lowered by a cylinder to precisely control the welding distance, so that the laser welding can be accurately applied to the contact position between the battery body and the electrode body to achieve a firm connection.

[0010] Furthermore, the feeding assembly is located at the front end of the overall device. The feeding assembly includes a material box, and the material box is provided with a covered material trough. The material trough is loaded with several stacked electrode bodies to be processed. The lower end of the material trough has a discharge port for pushing out the bottommost electrode body. By placing the feeding assembly at the front of the device and setting up a covered material trough, it is possible to store the electrode bodies in batches and avoid external contamination. The discharge port is located at the bottom of the material trough, and gravity is used to assist the bottom electrode body to detach, providing a structural basis for automatic feeding piece by piece.

[0011] Furthermore, a pusher plate is provided on the opposite side of the discharge port. One end of the pusher plate is located outside the material trough and is provided with a connecting plate. An electric push rod is provided on the connecting plate. The pusher plate pushes the lowest electrode body along the length direction of the electrode body in the material trough through the electric push rod. When pushed to the farthest state, the other end of the pusher plate is located at the discharge port, which is used to completely push the electrode body out of the material trough. The electric push rod drives the pusher plate to push out only the bottom tab body each time, realizing automatic single-piece feeding without the need for separate piece placement; the end point of the push stroke is matched with the discharge port to ensure that the push position is consistent each time, achieving a high repeatability feeding effect.

[0012] Furthermore, a material guiding assembly for receiving the electrode body is provided at the rear end of the discharge port. The material guiding assembly includes a receiving platform and a guide cover for receiving the electrode body at the discharge port. A downwardly inclined chute is provided at the rear end of the receiving platform. The lowest point of the chute is connected to the electrode groove. The guide cover is located above the receiving platform and the chute. The receiving platform receives the ejected electrode body, and the guide cover constrains the electrode body to keep it horizontal before entering the chute, preventing the sheet from flipping or tilting; the inclined chute uses gravity to transport the electrode body towards the electrode groove, which is simple and reliable in structure.

[0013] Furthermore, the slide groove has limit strips on both sides to limit the electrode body. The length of the inclined surface of the slide groove is longer than the length of the electrode body. A receiving roller is provided at the bottom of the slide groove. The receiving roller is located at the junction of the slide groove and the electrode groove. The cross-section of the receiving roller is a three-quarter circle. Its notch is a fan-shaped section with an included angle of 90 degrees. One side of the fan-shaped section is flush with the inclined surface of the slide groove, and the other side is used to support the electrode body that is attached to the inclined surface of the slide groove. There are stop strips on both sides of the notch that are flush with the limit strips to prevent the electrode body from sliding out. The outer arc surface of the receiving roller is made of rubber to drive the electrode body to move into the electrode groove. The receiving roller is controlled by a motor inside the machine. The limiting strip constrains the lateral position of the tab body throughout the chute, preventing slippage and deviation. The length of the chute slope is greater than the length of the tab body, ensuring that the tab body fully enters the chute and slides smoothly to the bottom. The three-quarter circular cross-section and fan-shaped notch design of the receiving roller ensure that when it rotates to the corresponding position, one side of the notch is flush with the chute slope and seamlessly connects with the tab body, while the other side supports the tab body and uses the friction of the rubber outer arc to accurately flip and send it into the tab groove. The stop bar and the limiting strip are flush to maintain the lateral limiting continuity, so that the tab body fully enters the tab groove and aligns with the battery body, overcoming the problem that ultra-thin tabs are difficult to fully enter due to their light weight, and preparing for pressing and welding.

[0014] The beneficial effects of this invention are: It adopts a fully automated integrated structure for feeding, guiding, positioning and welding, eliminating the need for manual contact with the electrode body throughout the process, effectively ensuring the conductivity of the electrode and improving the quality and safety of battery products; The feeding assembly adopts a pusher plate pusher structure, which ensures stable and reliable feeding and guarantees that only one tab is fed out at a time, without the problem of multiple tabs being stuck, thus adapting to the needs of large-scale continuous production. The material guiding component, combined with the inclined chute and the limiting strip, can ensure that the electrode tab is stable and centered during the downward movement of the electrode tab, effectively avoiding bending and offset of the electrode tab. Finally, it is accurately fed into the electrode tab groove by the receiving roller, with high positioning accuracy, which solves the problem of inaccurate positioning by manual placement. The clamping structure can tightly press and fix the tabs to the battery electrode sheets before welding, effectively resisting displacement caused by welding vibration, completely eliminating the problems of misalignment and incomplete welding of ultra-thin tabs, and significantly improving the quality of welding joints and battery yield. The design of the exposed welding area outside the slot not only ensures the surrounding clamping and fixing effect, but also provides sufficient working space for laser welding. The structural design is ingenious and reasonable. The laser welding method has a small heat-affected zone, high welding precision, and good joint strength, which is suitable for the precision welding requirements of ultra-thin tabs of 0.15~0.30mm. The robotic arm automatically loads and unloads materials, and works in conjunction with a controller to uniformly schedule each process, resulting in high production efficiency, low labor costs, stable and consistent welding quality, a reasonable overall structural layout, and smooth connection between each process. It can be widely used in the production of tab welding for soft-pack lithium-ion batteries in new energy vehicles, consumer electronics, energy storage and other fields. Attached Figure Description

[0015] Figure 1 A schematic diagram of the overall structure of a laser-assisted tab forming and welding device for a soft-pack lithium-ion battery. Figure 2 A schematic diagram of the machine tool structure for inventing a laser adapter tab forming and welding device for soft-pack lithium-ion batteries. Figure 3 A schematic diagram of the welding component structure for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 4 A second-view schematic diagram of the welding components for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 5 A schematic diagram of the material guiding component for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 6 A schematic diagram of the material guiding component of a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 7 A partial schematic diagram of the material guiding component for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 8 A schematic diagram of the feeding component structure for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. Figure 9 A schematic diagram of the internal structure of the feeding component for a laser adapter tab forming and welding device for a soft-pack lithium-ion battery. In the diagram: 1. Machine base; 2. Battery slot; 3. Tab slot; 4. Welding assembly; 5. Welding frame; 6. Lead screw; 7. Pressure plate; 8. Through slot; 9. Welding plate; 10. Welding head; 11. Feeding assembly; 12. Material box; 13. Material trough; 14. Push plate; 15. Connecting plate; 16. Electric push rod; 17. Discharge port; 18. Guide assembly; 19. Receiving platform; 20. Slide groove; 21. Limiting strip; 22. Receiving roller; 23. Guide cover; 25. Robotic arm; 26. Battery body; 27. Tab body. Detailed Implementation

[0016] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, the technical features involved in the different embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0019] Example 1 This invention provides a laser-connected tab forming and welding device for soft-pack lithium-ion batteries, including a machine base 1, a welding assembly 4 on the machine base 1, and two sets of feeding assemblies 11 and guiding assemblies 18 corresponding to the positive and negative tabs respectively. The machine base 1 serves as the supporting platform for the entire equipment and is equipped with an internal controller for unified control of the operation of various circuits and power components of the equipment, ensuring coordinated and orderly operation of each process and realizing automated continuous production. The surface of the machine base 1 is provided with a battery slot 2 and a tab slot 3 for placing the battery body 26 and the tab body 27 respectively. The slot structure can form a precise limit on the workpiece, ensuring that the placement position of each workpiece is uniform and providing a precise positioning reference for subsequent welding. A robotic arm 25 is provided on the outside of the battery slot 2, which can automatically complete the loading of the battery body 26 and the removal of the battery after welding, eliminating the need for manual handling, avoiding contamination caused by human contact, and improving production efficiency. The battery slot 2 and the tab slot 3 are interconnected. After the battery body 26 is placed in the battery slot 2, its electrode lead-out end can extend into the area of ​​the tab slot 3 and precisely fit with the tab body 27, waiting for the subsequent welding process, ensuring that the contact position of the two is accurately corresponding.

[0020] A welding assembly 4 is provided above the contact position between the battery body 26 and the tab body 27. The welding assembly 4 includes a welding frame 5, with lead screws 6 vertically arranged at both ends of the welding frame 5. A pressure plate 7 is sleeved on the lead screws 6. The rotation of the lead screws 6 can drive the pressure plate 7 to move up and down smoothly in the vertical direction. When the pressure plate 7 moves to the lowest end, it can tightly press the battery body 26 and the tab body 27 together. On the one hand, it can ensure that the tab and the battery electrode are in close contact, eliminating contact gaps. On the other hand, it can fix the position of the tab and the electrode during the welding process, effectively resisting the displacement caused by welding vibration, avoiding the tab misalignment, reducing the problems of poor welding and off-center welding, and improving the quality of the welding joint.

[0021] A through-hole 8 is opened in the middle of the pressure plate 7. The through-hole 8 is located directly above the contact position between the battery body 26 and the tab body 27. The welding area is exposed through the through-hole 8, which not only ensures that the surrounding area is pressed and fixed, but also provides a working channel for laser welding. Pressing and welding do not interfere with each other. A welding plate 9 is also set on the welding frame 5. A welding head 10 is installed at the bottom of the welding plate 9. The welding plate 9 and the through-hole 8 are vertically aligned. The welding plate 9 can move up and down in the through-hole 8 by a cylinder. The position of the welding head 10 is precisely aligned with the contact position between the battery and the tab. After the welding head 10 is lowered to the designated position, laser welding is performed to complete the laser welding of the tab and the battery electrode. Laser welding has a small heat-affected zone, high welding precision, and good joint strength, which is suitable for the precision welding requirements of ultra-thin tabs.

[0022] The feeding assembly 11 is located at the front end of the overall device and is used to automatically supply the electrode bodies 27 to be processed. The feeding assembly 11 includes a material box 12, and a covered material trough 13 is provided inside the material box 12. Several electrode bodies 27 to be processed can be stacked in the material trough 13. A discharge port 17 is opened at the lower end of the material trough 13, which can release the bottommost electrode body 27 at a time to achieve feeding one piece at a time. A pusher plate 14 is provided on the opposite side of the discharge port 17. One end of the pusher plate 14 extends out of the material trough 13 and is connected to the connection. The plate 15 is connected to the electric push rod 16, which can drive the push plate 14 to reciprocate along the length of the tab in the material trough 13. When the push plate 14 moves forward, it can push the bottom tab body 27 of the material trough 13 out of the outlet 17. When the push plate 14 is pushed to the farthest position, the other end of the push plate 14 is exactly at the outlet 17, which can completely push the tab body 27 out of the material trough 13, ensuring that the tab is completely delivered without being partially delivered or stuck, and the material supply is stable and reliable.

[0023] A guide assembly 18 is provided at the rear end of the discharge port 17 to receive the electrode body 27 pushed out from the material trough 13 and to guide it precisely into the electrode groove 3. The guide assembly 18 includes a receiving platform 19 and a guide cover 23. The receiving platform 19 is used to receive the electrode body 27 sent out from the discharge port 17 and to provide transition support for the electrode. A downward inclined slide 20 is provided at the rear end of the receiving platform 19. The lowest point of the slide 20 is connected to the electrode groove 3. The electrode can slide down along the slide 20 by its own weight. The guide cover 23 is placed above the receiving platform 19 and the slide 20 to prevent the electrode from tilting up or flying out during the sliding process, and to ensure that the electrode moves smoothly along the preset path.

[0024] Limiting strips 21 are provided on both sides of the chute 20 to laterally limit the sliding electrode tab, preventing it from shifting left or right and ensuring that the electrode tab slides smoothly along the central axis of the chute 20 and finally falls precisely into the electrode tab groove 3. The length of the inclined surface of the chute 20 is longer than the length of the electrode tab body 27, which is used to ensure that the electrode tab body 27 falls on the receiving roller 22 after it is fully tilted. The receiving roller 22 is provided at the bottom of the chute 20. The receiving roller 22 is located at the junction of the chute 20 and the electrode tab groove 3. The cross-section of the receiving roller 22 is three-quarters circular, and its notch is... The fan-shaped structure with a 90-degree included angle has one side flush with the inclined surface of the slide groove 20, and the other side is used to support the electrode body 27 that is attached to the inclined surface of the slide groove 20. Both sides of the notch are provided with baffles that are flush with the limit strip 21 to prevent the electrode body 27 from sliding out from the sides. The outer arc surface of the receiving roller 22 is made of rubber, which has high friction and can stably drive the electrode body 27 to move towards the electrode groove 3. The receiving roller 22 is driven by a motor in the machine base 1 to rotate, which can accurately control the electrode feeding speed and position to ensure that the electrode is accurately in place.

[0025] The overall usage method of this laser adapter tab forming and welding device for soft-pack lithium-ion batteries is as follows: Before starting the equipment, the positive and negative electrode tabs 27 to be processed are stacked into the material trough 13 of the feeding assembly 11, and the material trough 13 is covered to complete the material preparation. After the equipment starts, the robotic arm 25 automatically places the battery body 26 to be welded into the battery trough 2 of the machine 1, and the lead end of the battery electrode extends into the tab groove 3 area to complete the positioning. The feeding assembly 11 starts to work, and the electric push rod 16 drives the push plate 14 to move forward, pushing the bottom tab body 27 of the material trough 13 completely out of the outlet 17. The tab enters the receiving platform 19 of the guiding assembly 18. After entering the receiving platform 19 completely, the tab body 27 adheres to the inclined surface of the slide 20 due to gravity and slides down along the inclined slide 20. The limit strips 21 on both sides ensure that the tab does not shift laterally. When the tab slides down to the bottom, it falls into the fan-shaped notch of the receiving roller 22. The motor drives the receiving roller 22 to rotate. The arc-shaped rubber surface of the 22 remains in constant contact with the tab, relying on the friction of the rubber surface to smoothly feed the tab into the tab groove 3, ensuring precise alignment between the tab and the battery electrode. After the tab and battery are positioned, the lead screws 6 at both ends of the welding frame 5 drive the pressure plate 7 downwards. The pressure plate 7 tightly presses and fixes the contact area between the tab and the battery electrode to prevent misalignment caused by welding vibration. The welding plate 9 drives the welding head 10 down along the through groove 8 to the designated height. The welding head 10 passes through the through groove 8 to perform laser welding on the contact position between the tab and the battery electrode. After welding, the welding plate 9 and the pressure plate 7 rise and reset in sequence. The robotic arm 25 removes the welded battery from the battery groove 2 and simultaneously places the next battery to be welded, entering the next welding cycle. The entire process is fully automated, requiring no manual contact with the tab and welding area, ensuring consistent and stable welding quality.

[0026] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. The various components mentioned in this invention are common technologies in the existing field. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A laser-assisted tab forming and welding device for soft-pack lithium-ion batteries, characterized in that, The system includes a machine base (1) and welding components (4), a feeding component (11), and a guiding component (18) on the machine base (1). The machine base (1) has a battery slot (2) and a tab slot (3) for placing the battery body (26) and the tab body (27) and for limiting the battery body (26) and the tab body (27). The front end of the tab slot (3) is provided with a feeding component (11) and a guiding component (18). The feeding component (11) has a material trough (13) for placing... Several stacked electrode bodies (27) to be processed are placed. There is a discharge port (17) on one side of the bottom of the material trough (13) for pushing the electrode bodies (27) at the bottom out one by one from the discharge port (17). The material guiding assembly (18) has a receiving platform (19) and a chute (20). The bottom end of the chute (20) is connected to the electrode groove (3). A receiving roller (22) is provided at the junction of the two to make the electrode bodies (27) on the chute (20) completely enter the electrode groove (3) for welding.

2. The laser adapter tab forming and welding device for soft-pack lithium-ion batteries according to claim 1, characterized in that, A robotic arm (25) is provided outside the battery slot (2) for loading the battery body (26) and removing the welded battery. The battery slot (2) is connected to the tab slot (3) for fitting the battery body (26) and the tab body (27) together, waiting for subsequent welding.

3. The laser adapter tab forming and welding device for soft-pack lithium-ion batteries according to claim 2, characterized in that, A welding assembly (4) is provided at the contact position between the battery body (26) and the tab body (27). The welding assembly (4) includes a welding frame (5). Both ends of the welding frame (5) are provided with lead screws (6). A pressure plate (7) is sleeved on the lead screws (6). When the pressure plate (7) moves to the lowest end, it presses against the battery body (26) and the tab body (27) to reduce the positional displacement caused by welding.

4. The laser adapter tab forming and welding device for soft-pack lithium-ion batteries according to claim 3, characterized in that, The pressure plate (7) has a through groove (8) in the middle. The through groove (8) is located directly above the contact position between the battery body (26) and the tab body (27). This position is exposed because of the through groove (8) and is used for subsequent laser welding. The welding frame (5) is also provided with a welding plate (9). The bottom of the welding plate (9) has a welding head (10). The welding plate (9) corresponds to the position of the through groove (8) and is raised and lowered in the through groove (8) by a cylinder. The position of the welding head (10) corresponds to the contact position between the battery body (26) and the tab body (27) and is used to laser weld the two together.

5. The laser adapter tab forming and welding device for a soft-pack lithium-ion battery according to claim 4, characterized in that, The feeding assembly (11) is located at the front end of the overall device. The feeding assembly (11) includes a material box (12). The material box (12) is provided with a covered material trough (13). The material trough (13) is loaded with a number of electrode bodies (27) to be processed. The lower end of the material trough (13) has a discharge port (17) for pushing out the lowest electrode body (27).

6. The laser adapter tab forming and welding device for a soft-pack lithium-ion battery according to claim 5, characterized in that, A pusher plate (14) is provided on the opposite side of the discharge port (17). One end of the pusher plate (14) is located outside the material trough (13) and is provided with a connecting plate (15). An electric push rod (16) is provided on the connecting plate (15). The pusher plate (14) pushes the lowest electrode body (27) in the material trough (13) along the length direction of the electrode body (27) through the electric push rod (16). When pushed to the farthest state, the other end of the pusher plate (14) is located at the discharge port (17) to completely push the electrode body (27) out of the material trough (13).

7. The laser adapter tab forming and welding device for a soft-pack lithium-ion battery according to claim 6, characterized in that, The rear end of the discharge port (17) is provided with a material guiding assembly (18) for receiving the electrode body (27). The material guiding assembly (18) includes a receiving platform (19) and a guide cover (23) for receiving the electrode body (27) at the discharge port (17). The rear end of the receiving platform (19) is provided with a downward inclined chute (20). The lowest point of the chute (20) is connected to the electrode groove (3). The guide cover (23) is located above the receiving platform (19) and the chute (20).

8. The laser adapter tab forming and welding device for a soft-pack lithium-ion battery according to claim 7, characterized in that, The slide groove (20) has limit strips (21) on both sides for limiting the electrode body (27). The length of the inclined surface of the slide groove (20) is longer than the length of the electrode body (27). A receiving roller (22) is provided at the bottom of the slide groove (20). The receiving roller (22) is located at the junction of the slide groove (20) and the electrode groove (3). The cross-section of the receiving roller (22) is a three-quarter circle, and its notch is a fan-shaped section with an included angle of 90 degrees. One side of the shape is flush with the inclined surface of the slide groove (20), and the other side is used to support the electrode body (27) that is attached to the inclined surface of the slide groove (20). There are stop strips on both sides of the notch that are flush with the limit strip (21) to prevent the electrode body (27) from sliding out. The outer arc surface of the receiving roller (22) is made of rubber and is used to drive the electrode body (27) to move towards the electrode groove (3). The receiving roller (22) is controlled by the motor in the machine base (1).

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