A continuous welding device

Abstract

The application relates to a continuous welding device, which comprises a supporting unit, at least two clamping units and a pushing unit, wherein the supporting unit comprises a bottom plate and a plurality of supporting vertical plates arranged on the bottom plate; each clamping unit comprises a rotating assembly, a battery cell clamping assembly, a current collector plate clamping assembly and a pushing assembly; the rotating assembly comprises a rotating shaft arranged on the supporting vertical plate and a first driving member, the rotating shaft is connected with the first driving member and rotates under the driving of the first driving member; the battery cell clamping assembly comprises a plurality of clamping jaws which are slidingly connected with the rotating shaft, the plurality of clamping jaws are arranged at intervals along the circumference of the rotating shaft, the clamping jaws can reciprocate along the axial direction of the rotating shaft, and a battery cell to be welded is clamped on the clamping jaws. The alternating rotating clamping unit is adopted, the welding efficiency and stability are ensured, the feeding and positioning time in the whole welding process is saved, the continuous welding of the battery cell and the current collector plate is realized, the welding efficiency is effectively improved, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of battery processing technology, and in particular to a continuous welding apparatus. Background Technology

[0002] Currently, electric vehicle power batteries are mainly large cylindrical or square batteries, with large cylindrical batteries representing one of the development directions for new energy power batteries. The production process of large cylindrical batteries involves laser welding. Before the cell is installed in the casing, the tabs at both ends need to be welded to the current collector using laser penetration welding. In the large cylindrical cell assembly section, the laser welding of the current collector is one of the bottlenecks restricting its production efficiency. Traditional laser welding uses a "feeding and positioning - laser welding - repositioning and unloading" logic for the welding operation.

[0003] The shortcomings of existing welding methods are that the use of lasers is low due to the existence of feeding and discharging logic, making continuous welding impossible and resulting in low welding efficiency, which in turn leads to low production efficiency and makes it difficult to meet mass production requirements. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a continuous welding device. The alternating rotary clamping unit adopted by the present invention saves the feeding, unloading and positioning time in the entire laser welding process while ensuring the efficiency and stability of laser welding, thereby achieving a high laser utilization rate, effectively improving welding efficiency, and thus improving production efficiency.

[0005] To solve the above-mentioned technical problems, the present invention provides a continuous welding apparatus, comprising,

[0006] A support unit, comprising a base plate and a plurality of support uprights disposed on the base plate;

[0007] At least two clamping units, each clamping unit including a rotating component, a cell clamping component, a current collector clamping component, and a pushing component;

[0008] The rotating assembly includes a rotating shaft disposed on the supporting upright plate and a first driving member. The rotating shaft is connected to the first driving member and rotates under the drive of the first driving member.

[0009] The cell clamping assembly includes a plurality of jaws slidably connected to the rotating shaft. The plurality of jaws are spaced apart circumferentially along the rotating shaft. The jaws are capable of reciprocating along the axial direction of the rotating shaft, and the cell to be welded is clamped in the jaws.

[0010] The collector plate clamping assembly includes a connecting plate and a plurality of placement portions disposed on the connecting plate. The connecting plate is coaxially arranged with the rotating shaft and moves synchronously with the rotating shaft. The placement portions are slidably connected to the connecting plate and move radially along the connecting plate. The collector plate to be welded is placed in the placement portion.

[0011] The pushing component includes a plurality of pushing parts slidably connected to the rotating shaft. The plurality of pushing parts are arranged circumferentially along the rotating shaft. The pushing parts reciprocate along the axial direction of the rotating shaft. The pushing parts are capable of pushing the battery cell to be soldered, which is held in the gripper, to contact the current collector to be soldered.

[0012] In the welding unit, when the battery cell to be welded and the current collector to be welded rotate to the designated position, the pushing part pushes the battery cell to be welded to abut against the current collector to be welded, and the welding unit welds the battery cell to be welded and the current collector to be welded in the clamping unit.

[0013] In one embodiment of the present invention, the battery cell clamping assembly includes a first jaw, a second jaw, a third jaw, and a fourth jaw disposed on the rotating shaft. The rotating shaft is provided with a first guide rail, a second guide rail, a third guide rail, and a fourth guide rail evenly spaced along the axial direction. The first jaw is mounted on the first guide rail via a first slider, the second jaw is mounted on the second guide rail via a second slider, the third jaw is mounted on the third guide rail via a third slider, and the fourth jaw is mounted on the fourth guide rail via a fourth slider.

[0014] In one embodiment of the present invention, the collector plate clamping assembly includes a first placement portion, a second placement portion, a third placement portion, and a fourth placement portion uniformly arranged along the circumference of the connecting plate, and the connecting plate is provided with a plurality of clearance grooves corresponding to the positions of the first placement portion, the second placement portion, the third placement portion, and the fourth placement portion.

[0015] In one embodiment of the present invention, the connecting disk is provided with a fifth guide rail, a sixth guide rail, a seventh guide rail, and an eighth guide rail along the radial direction. The first placement part is slidably connected to the fifth guide rail, the second placement part is slidably connected to the sixth guide rail, the third placement part is slidably connected to the seventh guide rail, and the fourth placement part is slidably connected to the eighth guide rail. The rotating shaft is also provided with an eccentric disk coaxially connected to the rotating shaft. The first placement part, the second placement part, the third placement part, and the fourth placement part are all provided with guide wheels. The guide wheels cooperate with the eccentric disk and move along the circumference of the eccentric disk.

[0016] In one embodiment of the present invention, a first elastic member is further provided between two adjacent placement portions.

[0017] In one embodiment of the present invention, the pushing component includes a cam and a pushing part, the rotating shaft drives the pushing part to rotate around the rotating shaft, and one end of the cam near the pushing component is a contact end face, the contact end face having an arc-shaped protrusion.

[0018] In one embodiment of the present invention, each of the grippers is provided with a pushing part at one end, the pushing part is slidably connected to the rotating shaft, and each of the pushing parts is provided with a roller that cooperates with the cam. The roller abuts against the contact end face and drives the pushing part to move axially along the rotating shaft.

[0019] In one embodiment of the present invention, each of the pushing parts is further provided with a second elastic element, and a fixed post is provided on the rotating shaft in the radial direction. One end of the second elastic element is connected to the pushing part and the other end is connected to the fixed post. The elastic deformation direction of the second elastic element is in the same direction as the axial direction of the rotating shaft.

[0020] In one embodiment of the present invention, the welding unit includes a mounting frame and a laser galvanometer module, wherein the laser galvanometer module is movably connected to the mounting frame.

[0021] In one embodiment of the present invention, a dust removal unit is further included, the dust removal unit including a dust suction port and a dust suction device, the dust suction port being connected to the dust suction device and the dust suction port being located below the designated position.

[0022] In one embodiment of the present invention, a first clamping unit and a second clamping unit are arranged adjacent to each other, the structures of the first clamping unit and the second clamping unit are mirror images of each other, and the welding unit alternately welds the battery cell to be welded and the current collector to be welded disposed in the first clamping unit and the second clamping unit.

[0023] The technical solution of the present invention has the following advantages compared with the prior art:

[0024] This invention discloses a continuous welding apparatus comprising a clamping unit and a welding unit for welding the battery cell and the current collector to be welded. At least two clamping units are provided, each including a rotating component, a battery cell clamping component, a current collector clamping component, and a pushing component. With two clamping units, dual-station rotary welding can be achieved. The clamping units rotate and load the battery cell and the current collector to be welded. Each clamping unit is driven by a corresponding first driving component. When one clamping unit rotates into position and begins welding, the welded battery cell, the battery cell to be welded, and the current collector to be welded on that side are loaded and unloaded by an operator or robot onto their respective clamping components. Simultaneously, the other clamping unit begins to rotate under the drive of a rotating shaft, and this cycle repeats. The alternating rotary clamping units employed in this invention ensure welding efficiency and stability while saving time on material loading / unloading and positioning throughout the welding process, enabling continuous welding of the battery cell and current collector, effectively improving welding efficiency, and thus increasing production efficiency. Attached Figure Description

[0025] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0026] Figure 1 This is a schematic diagram of the overall structure of the preferred embodiment of the present invention.

[0027] Figure 2 This is a partial structural main view of the push component in the preferred embodiment of the present invention.

[0028] Figure 3 This is a partial three-dimensional view of the push component according to the preferred embodiment of the present invention.

[0029] Figure 4 This is a partial structural side view of the collector plate clamping assembly according to the preferred embodiment of the present invention.

[0030] Figure 5 This is a partial three-dimensional view of the collector plate clamping assembly according to the preferred embodiment of the present invention.

[0031] Figure 6 This is a partial three-dimensional view of the battery cell clamping assembly according to the preferred embodiment of the present invention.

[0032] Explanation of reference numerals in the accompanying drawings: 1. Base plate; 10. First support plate; 11. Second support plate; 20. Rotating shaft; 201. First driving component; 202. Internal spring; 22. Second gripper; 23. Third gripper; 24. Fourth gripper; 25. Eccentric disc; 30. Connecting disc; 301. First placement part; 3010. First guide wheel; 302. Second placement part; 3020. Second guide wheel; 303. Third placement part; 3030. Third guide wheel; 304. Four placement parts; 3040, fourth guide wheel; 305, fifth guide rail; 306, sixth guide rail; 307, seventh guide rail; 308, eighth guide rail; 41, first elastic element; 42, second elastic element; 50, cam; 51, slip ring; 501, contact end face; 601, first slide rail; 602, second slide rail; 604, fourth slide rail; 61, first roller; 62, second roller; 64, fourth roller; 70, mounting bracket; 71, laser galvanometer module; 80, dust suction port. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention. Example

[0034] Reference Figures 1 to 6 As shown, the present invention discloses a continuous welding device, including a support unit, the support unit including a base plate 1 and a first support plate 10 vertically disposed on the base plate 1.

[0035] The continuous welding apparatus further includes at least two clamping units, which are arranged side by side and have identical structures. Each clamping unit includes a rotating assembly, a cell clamping assembly, a current collector clamping assembly, and a pushing assembly.

[0036] Specifically, the rotating assembly includes a rotating shaft 20 disposed on the first supporting plate 10 and a first driving member 201. The extending direction of the rotating shaft 20 is perpendicular to the surface on which the first supporting plate 10 is located. The rotating shaft 20 is connected to the first driving member 201 and rotates under the drive of the first driving member 201.

[0037] The cell clamping assembly includes a plurality of jaws slidably connected to the rotating shaft 20. The plurality of jaws are spaced apart circumferentially along the rotating shaft 20, and the jaws are capable of reciprocating along the axial direction of the rotating shaft 20. The cell to be welded is clamped in the jaws, thereby the jaws can drive the cell to be welded to move along the extension direction of the rotating shaft 20.

[0038] The current collector clamping assembly includes a connecting plate 30 and multiple placement portions disposed on the connecting plate 30. The connecting plate 30 is coaxially arranged with the rotating shaft 20 and can rotate synchronously with the rotating shaft 20. The placement portions are slidably connected to the connecting plate 30 and move radially along the connecting plate 30. The current collector to be welded is placed in the placement portion. It should be noted that when the rotating shaft 20 rotates under the drive of the first driving member 201, in order to ensure that the current collector to be welded corresponds one-to-one with the current collector to be welded during welding and to ensure the accuracy of the welding position, the placement portions and the clamps are also arranged one-to-one, with each placement portion cooperating with one clamp.

[0039] The pushing assembly includes multiple pushing parts slidably connected to the rotation shaft 20. These pushing parts are spaced apart circumferentially along the rotation shaft 20 and reciprocate axially along the rotation shaft 20. Each pushing part can push the battery cell to be soldered, held in the gripper, until it contacts the current collector. It should be noted that, to ensure accurate pushing of the battery cell by the pushing parts, the pushing parts are also configured to correspond to the positions of the grippers, thus ensuring that each gripper is equipped with a corresponding pushing part.

[0040] In the welding unit, when the battery cell to be welded and the current collector to be welded are rotated to a designated position by the rotating shaft 20, the pushing part pushes the battery cell to be welded to abut against the current collector to be welded, and the welding unit welds the battery cell to be welded and the current collector to be welded.

[0041] It should be noted that, in this embodiment, the designated position is defined as the position when the two placement parts located in the two clamping units rotate to the shortest straight-line distance.

[0042] Therefore, the continuous welding device protected by this invention includes a clamping unit and a welding unit for welding the battery cell and the current collector to be welded. At least two clamping units are provided, each including a rotating component, a battery cell clamping component, a current collector clamping component, and a pushing component. With two clamping units, dual-station rotary welding can be achieved. The clamping units rotate and load the battery cell and the current collector to be welded. Each clamping unit is driven by a corresponding first driving component. When one clamping unit rotates into position and begins welding, the welded battery cell, the battery cell to be welded, and the current collector to be welded on that side are loaded and unloaded by an operator or robot on their respective clamping components. Simultaneously, the clamping unit on the other side begins to rotate under the drive of a rotating shaft, and this cycle repeats. The alternating rotary clamping units used in this invention ensure welding efficiency and stability while saving time on material loading / unloading and positioning during the entire welding process, enabling continuous welding of the battery cell and current collector, effectively improving welding efficiency, and thus increasing production efficiency.

[0043] In a preferred embodiment, the cell clamping assembly includes a first clamp, a second clamp, a third clamp, and a fourth clamp 24 evenly spaced on the rotation shaft 20. The first clamp, second clamp, third clamp, and fourth clamp 24 are arranged circumferentially along the rotation shaft 20, and the distance between adjacent clamps along the rotation shaft 20 is a quarter-circle arc. To enable the cell to be welded to move and contact the current collector, a first guide rail, a second guide rail, a third guide rail, and a fourth guide rail are evenly spaced axially on the rotation shaft 20. The first clamp is mounted on the first guide rail via a first slider, the second clamp 22 is mounted on the second guide rail via a second slider, the third clamp 23 is mounted on the third guide rail via a third slider, and the fourth clamp 24 is mounted on the fourth guide rail via a fourth slider.

[0044] It should be noted that each slider is also provided with an internal spring 202, one end of which is connected to the slider and the other end is connected to the rotating shaft 20.

[0045] Furthermore, the collector plate clamping assembly includes a first placement portion 301, a second placement portion 302, a third placement portion 303, and a fourth placement portion 304 evenly arranged along the circumference of the connecting plate 30. The first placement portion 301 is horizontally opposite to the first gripper, the second placement portion 302 is horizontally opposite to the second gripper, the third placement portion 303 is horizontally opposite to the third gripper, and the fourth placement portion 304 is horizontally opposite to the fourth gripper. Simultaneously, for ease of operation and welding, the connecting plate 30 is provided with multiple clearance grooves corresponding to the positions of the first placement portion 301, the second placement portion 302, the third placement portion 303, and the fourth placement portion 304.

[0046] Furthermore, the connecting plate 30 is provided with a fifth guide rail 305, a sixth guide rail 306, a seventh guide rail 307, and an eighth guide rail 308 along the radial direction. The first placement part 301 is slidably connected to the fifth guide rail 305, the second placement part 302 is slidably connected to the sixth guide rail 306, the third placement part 303 is slidably connected to the seventh guide rail 307, and the fourth placement part 304 is slidably connected to the eighth guide rail 308.

[0047] In detail, to avoid interference between the robot's or operator's hand and the continuous welding device when the welding manifold is assembled into the placement part, an eccentric disk 25 is also provided on the rotating shaft 20 and coaxially connected to the rotating shaft 20, and the axis of the eccentric disk 25 connected to the rotating shaft 20 is close to the designated position. The first placement part 301 is provided with a first guide wheel 3010, the second placement part 302 is provided with a second guide wheel 3020, the third placement part 303 is provided with a third guide wheel 3030, and the fourth placement part 304 is provided with a fourth guide wheel 3040. The first guide wheel 3010, the second guide wheel 3020, the third guide wheel 3030, and the fourth guide wheel 3040 all cooperate with the eccentric disk 25 and can rotate around the circumference of the eccentric disk 25. In this way, when the first placement part 301 moves to the outermost position along the rotating shaft 20, due to the action of the eccentric disk 25, the first placement part 301 will move along the fifth guide rail 305 and move away from the connecting disk 30, thereby leaving sufficient loading space so that the robot or operator can load the welding manifold at this position.

[0048] To maintain dynamic balance among the multiple placement portions and ensure their stability during rotation along the eccentric disk 25, a first elastic element 41 is provided between two adjacent placement portions. In a preferred embodiment, the first elastic element 41 is a spring.

[0049] Specifically, the base plate 1 is further provided with a second support plate 11, which is arranged parallel to the first support plate 10.

[0050] Furthermore, the pushing component includes a cam 50 and a pushing part. The cam 50 is mounted on the second support plate 11, and the pushing part rotates with the rotating shaft 20. One end of the cam 50 near the pushing component is a contact end face 501, and the contact end face 501 has an arc-shaped protrusion.

[0051] Furthermore, each of the grippers has a corresponding pusher at one end, the rotating shaft 20 has a slide rail that cooperates with the pusher, and each pusher has a roller that cooperates with the cam.

[0052] Specifically, the pushing part includes a base and a cylinder disposed on the base. The movement direction of the cylinder is coaxial with the rotating shaft 20. The cylinder can press the battery cell to be welded and the current collector to be welded together to facilitate subsequent welding.

[0053] In a preferred embodiment, the device includes a first pushing part that cooperates with the first gripper 22, a second pushing part that cooperates with the second gripper 22, a third pushing part that cooperates with the third gripper 23, and a fourth pushing part that cooperates with the fourth gripper 24. The first pushing part has a first roller 61, the second pushing part has a second roller 62, the third pushing part has a third roller, and the fourth pushing part has a fourth roller 64. The surface of the rotating shaft 20 is provided with a first slide rail 601, a second slide rail 602, a third slide rail, and a fourth slide rail 604 parallel to the axial direction of the rotating shaft 20. The first pushing part is slidably connected to the first slide rail 601, the second pushing part is slidably connected to the second slide rail 602, the third pushing part is slidably connected to the third slide rail, and the fourth pushing part is slidably connected to the fourth slide rail 604. Accordingly, the first pushing part includes a first cylinder, the second pushing part includes a second cylinder, the third pushing part includes a third cylinder, and the fourth pushing part includes a fourth cylinder.

[0054] The first roller 61, the second roller 62, the third roller, and the fourth roller 64 all abut against the contact end face 501, driving the pushing part to reciprocate along the axial direction of the rotating shaft 20. When the pushing part moves along the contact end face 501 and reaches the protrusion of the contact end face 501, the pushing part will drive the battery cell to be soldered to move closer to the current collector to be soldered until the battery cell to be soldered is pressed against the current collector to be soldered. The clamping force here is provided by the cylinder of the pushing part for welding. When welding is completed, as the rotating shaft 20 rotates, the pushing part moves along the contact end face 501 away from the connecting plate 30, while the finished battery cell moves in the opposite direction with the pushing part under the action of the internal spring 202. At the same time, the finished battery cell moves from the designated position (welding position) to the bottom (or top) of the rotating shaft 20, making it easy to remove the finished battery cell.

[0055] In a preferred embodiment, each of the pushing parts is further provided with a second elastic element 42, and a plurality of fixed posts are provided radially on the rotating shaft 20. One end of the second elastic element 42 is connected to the pushing part, and the other end is connected to the fixed post. The elastic deformation direction of the second elastic element is in the same direction as the axial direction of the rotating shaft 20. The second elastic element 42 is a spring.

[0056] The welding unit includes a mounting frame 70 and a laser galvanometer module 71. The laser galvanometer module 71 is movably connected to the mounting frame 70, thereby facilitating the adjustment of the position of the laser galvanometer module 71.

[0057] It should be noted that the continuous welding device of the present invention is also provided with a dust removal unit, which includes a dust suction port 80 and a dust suction device. The dust suction port 80 is connected to the dust suction device and is located below the designated position, so as to facilitate the timely treatment of dust generated during laser welding and avoid accumulation that would affect the welding effect.

[0058] In a preferred embodiment, the first driving component 201 is a drive motor. The slip ring 51 is used to connect to the air pipe of the pneumatic rotating mechanism, and the cam 50 rotates under the drive of the pneumatic rotating mechanism.

[0059] Preferably, the continuous welding apparatus of the present invention includes a first clamping unit and a second clamping unit arranged adjacent to each other. The first clamping unit and the second clamping unit have the same structure and are mirror-symmetrical. With this arrangement, the welding unit can alternately weld the battery cell to be welded and the current collector plate disposed in the first clamping unit and the second clamping unit. The dual-station rotary clamping units are independently driven by their respective motors, rotating on one side while welding on the other. During the period from the completion of rotation on one side to the completion of welding on that side, the finished battery cell is removed and the solder to be welded is loaded. Furthermore, the positioning of the current collector plate and the clamping of the battery cell and the current collector plate are all completed during the rotation of the clamping unit. The alternating dual-rotation mechanism maximizes the utilization of the laser, thereby completely eliminating the preparation time for loading and unloading during the entire production process, thus maximizing laser utilization and increasing production efficiency. For example, if the process welding time is 1 second, it can achieve product output in 1 second, eliminating other necessary preparation steps, thereby greatly improving welding efficiency and thus production efficiency.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A continuous welding apparatus, characterized in that: include, A support unit, comprising a base plate and a plurality of support uprights disposed on the base plate; At least two clamping units, each clamping unit including a rotating component, a cell clamping component, a current collector clamping component, and a pushing component; The rotating assembly includes a rotating shaft disposed on the supporting upright plate and a first driving member. The rotating shaft is connected to the first driving member and rotates under the drive of the first driving member. The cell clamping assembly includes a plurality of jaws slidably connected to the rotating shaft. The plurality of jaws are spaced apart circumferentially along the rotating shaft. The jaws are capable of reciprocating along the axial direction of the rotating shaft, and the cell to be welded is clamped in the jaws. The collector plate clamping assembly includes a connecting plate and a plurality of placement portions disposed on the connecting plate. The connecting plate is coaxially arranged with the rotating shaft and moves synchronously with the rotating shaft. The placement portions are slidably connected to the connecting plate and move radially along the connecting plate. The collector plate to be welded is placed in the placement portion. The pushing component includes a plurality of pushing parts slidably connected to the rotating shaft. The plurality of pushing parts are arranged circumferentially along the rotating shaft. The pushing parts reciprocate along the axial direction of the rotating shaft. The pushing parts are capable of pushing the battery cell to be soldered, which is held in the gripper, to contact the current collector to be soldered. In the welding unit, when the battery cell to be welded and the current collector to be welded rotate to the designated position, the pushing part pushes the battery cell to be welded to abut against the current collector to be welded, and the welding unit welds the battery cell to be welded and the current collector to be welded in the clamping unit.

2. The continuous welding apparatus according to claim 1, characterized in that: The cell clamping assembly includes a first jaw, a second jaw, a third jaw, and a fourth jaw disposed on the rotating shaft. The rotating shaft is provided with a first guide rail, a second guide rail, a third guide rail, and a fourth guide rail evenly spaced along the axial direction. The first jaw is mounted on the first guide rail via a first slider, the second jaw is mounted on the second guide rail via a second slider, the third jaw is mounted on the third guide rail via a third slider, and the fourth jaw is mounted on the fourth guide rail via a fourth slider.

3. The continuous welding apparatus according to claim 1, characterized in that: The collector plate clamping assembly includes a first placement part, a second placement part, a third placement part, and a fourth placement part that are evenly arranged along the circumference of the connecting plate. The connecting plate is provided with a plurality of clearance grooves corresponding to the positions of the first placement part, the second placement part, the third placement part, and the fourth placement part.

4. The continuous welding apparatus according to claim 3, characterized in that: The connecting plate is provided with a fifth, sixth, seventh, and eighth guide rail along the radial direction. The first placement part is slidably connected to the fifth guide rail, the second placement part is slidably connected to the sixth guide rail, the third placement part is slidably connected to the seventh guide rail, and the fourth placement part is slidably connected to the eighth guide rail. The rotating shaft is also provided with an eccentric disk coaxially connected to the rotating shaft. The first, second, third, and fourth placement parts are all provided with guide wheels. The guide wheels cooperate with the eccentric disk and move along the circumference of the eccentric disk.

5. A continuous welding apparatus according to claim 3, characterized in that: A first elastic element is also provided between two adjacent placement parts.

6. A continuous welding apparatus according to claim 1, characterized in that: The pushing component includes a cam and a pushing part. The rotating shaft drives the pushing part to rotate around the rotating shaft. One end of the cam near the pushing component is a contact end face, and the contact end face has an arc-shaped protrusion.

7. A continuous welding apparatus according to claim 6, characterized in that: Each of the grippers has a corresponding pushing part at one end, the pushing part is slidably connected to the rotating shaft, and each pushing part is provided with a roller that cooperates with the cam. The roller abuts against the contact end face and drives the pushing part to move axially along the rotating shaft.

8. A continuous welding apparatus according to claim 7, characterized in that: Each of the pushing parts is further provided with a second elastic element, and a fixed post is provided on the rotating shaft along the radial direction. One end of the second elastic element is connected to the pushing part and the other end is connected to the fixed post. The elastic deformation direction of the second elastic element is in the same direction as the axial direction of the rotating shaft.

9. A continuous welding apparatus according to claim 1, characterized in that: The welding unit includes a mounting frame and a laser galvanometer module, and the laser galvanometer module is movably connected to the mounting frame.

10. A continuous welding apparatus according to claim 1, characterized in that: It also includes a dust removal unit, which includes a dust suction port and a dust suction device. The dust suction port is connected to the dust suction device and is located below the designated position.

11. A continuous welding apparatus according to claim 1, characterized in that: The device includes a first clamping unit and a second clamping unit arranged adjacent to each other. The structures of the first clamping unit and the second clamping unit are mirror images of each other. The welding unit alternately welds the battery cell to be welded and the current collector to be welded, which are located in the first clamping unit and the second clamping unit.

Images