Welding device for battery cell tab and adapter plate

Abstract

The utility model relates to a welding device for a battery cell tab and an adapter piece, and belongs to the technical field of battery processing, the welding device for the battery cell tab and the adapter piece comprises a tray assembly used for bearing a to-be-welded battery cell and the adapter piece; the pressing assembly comprises a tab pressing plate used for pressing a single tab of the battery cell and a lifting plate used for driving the tab pressing plate to ascend and descend, and the tab pressing plate is provided with a receding hole for exposing the tab and allowing the welding head to enter for welding; and the dust collection assembly comprises a dust collection head and a position adjusting mechanism connected with the dust collection head and the lifting plate, and the position adjusting mechanism is used for adjusting the position of the dust collection head so that a dust collection opening of the dust collection head can be in butt joint with the receding hole. According to the welding device, the situation that in the welding process of the battery cell tab and the switching piece, the battery cell tab is repeatedly pressed, and the shape of the tab is changed can be avoided, meanwhile, the tab pressing plate and the welding head can be effectively cleaned, and the situation that the battery cell is secondarily polluted by dust is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery processing, and in particular to a welding device for a battery cell tab and a switching plate. Background Art

[0002] In the current ultrasonic welding production process, due to the limitation of the welding area of ​​the battery cell tabs and the adapter sheet and the volume limitation of the welding machine welding head, the welding of the battery cell tabs and the adapter sheet is carried out by switching multiple welding stations on the conveyor line with the tray assembly to weld the multiple overlapping areas of the battery cell tabs and the adapter sheet one by one. Since the clamping assembly of the welding station adopts a full-pressure pressure plate to press the two battery cell tabs together, when the tray assembly switches multiple welding stations, the battery cell tabs will be repeatedly compressed, causing the tab shape to change, resulting in the adapter sheet being crushed, cracked, deformed or the tab stratification.

[0003] In addition, long-term welding causes copper / aluminum dust to adhere to the tab pressure plate, which cannot be effectively cleaned during the cycle. The tab pressure plate is prone to secondary contamination of the battery cell after recycling, which increases the internal resistance of the battery cell. Therefore, it is necessary to study and improve the above structure and provide a welding device for the battery cell tab and the adapter to avoid the situation in which the battery cell tab is repeatedly pressed during the welding process of the battery cell tab and the adapter, causing the tab shape to change, and at the same time effectively clean the tab pressure plate and the welding head to reduce the secondary contamination of the battery cell by dust. Summary of the invention

[0004] An embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, which can avoid the battery cell tab being repeatedly compressed during the welding process, causing the tab shape to change. At the same time, it can effectively clean the tab pressure plate and the welding head to reduce the secondary contamination of the battery cell by dust.

[0005] The embodiment of the present application provides a welding device for a battery cell tab and a switching piece, comprising:

[0006] A tray assembly, which is used to carry the battery cells and adapters to be welded;

[0007] A clamping assembly, comprising a tab pressing plate for clamping a single tab of a battery cell, and a lifting plate for lifting the tab pressing plate, wherein the tab pressing plate is provided with a clearance hole for exposing the tab to allow a welding head to enter for welding;

[0008] The dust suction assembly comprises a dust suction head and a position adjustment mechanism connecting the dust suction head and a lifting plate, wherein the position adjustment mechanism is used to adjust the position of the dust suction head so that the dust suction port of the dust suction head docks with the clearance hole.

[0009] In some embodiments, the position adjustment mechanism includes a pad connected to the lifting plate by bolts, and a first angle code connected to the pad by bolts, and the vacuum head is connected to the first angle code by bolts;

[0010] The pad is provided with a first oblong hole extending in a first direction and used for passing bolts, the first angle code is provided with a second oblong hole extending in a second direction and used for passing bolts, and a third oblong hole extending in a third direction and used for passing bolts.

[0011] In some embodiments, a second angle code is bolted to the lifting plate, the tab pressure plate is bolted to the second angle code, and the second angle code is provided with a fourth oblong hole extending along the first direction and used for passing the bolt.

[0012] In some embodiments, the dust collection assembly further includes a valve for controlling the air flow of the dust collection head, and the valve is connected to the dust collection head via a telescopic tube.

[0013] In some embodiments, one end of the vacuum head close to its vacuum port is bent along a first direction, the vacuum end of the vacuum head is provided with a notch for avoiding the welding head, and the clearance hole has a slope for fitting the vacuum head.

[0014] In some embodiments, the tray assembly includes a support platform and a placement plate disposed on the support platform for carrying the battery cells. The support platform is provided with a first clamping mechanism for clamping and positioning the battery cells along a first direction, and a second clamping mechanism for clamping and positioning the battery cells along a second direction.

[0015] In some embodiments, the first clamping mechanism includes a first fixed block, a first movable block and a first elastic tightening member that drives the first movable block to approach the first fixed block, and the second clamping mechanism includes a second fixed block, a second movable block and a second elastic tightening member that drives the second movable block to approach the second fixed block, which are arranged on the support.

[0016] In some embodiments, a driving assembly is further included for pushing the first elastic tensioning member and the second elastic tensioning member, wherein the movable end of the first elastic tensioning member is connected to the first roller via a pin rod, and the movable end of the second elastic tensioning member is connected to the second roller, and the driving assembly includes a fork for pushing the first roller so that the first roller pushes the second roller.

[0017] In some embodiments, a limiting seat for placing the adapter plate is further provided on the support platform, and a groove for positioning the adapter plate and a through hole for preventing the adapter plate and the limiting seat from being welded are provided on the limiting seat.

[0018] In some embodiments, the clamping assembly includes a mounting plate for slidingly mounting the lifting plate, and a driving component arranged on the mounting plate and used to drive the lifting plate to rise and fall. The lifting plate is also provided with an elastic clamping component for clamping the large surface of the battery cell.

[0019] The beneficial effects of the technical solution provided by this application include:

[0020] An embodiment of the present application provides a welding device for a battery cell pole tab and an adapter plate, comprising a tray assembly for carrying the battery cell and the adapter plate to be welded; a clamping assembly comprising a pole tab pressing plate for clamping a single pole tab of the battery cell, and a lifting plate for lifting and lowering the pole tab pressing plate, wherein the pole tab pressing plate is provided with a clearance hole for exposing the pole tab for allowing a welding head to enter for welding; a dust suction assembly comprising a dust suction head and a position adjustment mechanism connecting the dust suction head and the lifting plate, wherein the position adjustment mechanism is used to adjust the position of the dust suction head so that the dust suction port of the dust suction head docks with the clearance hole.

[0021] Therefore, during the welding process of the battery cell tabs and the adapter, the tab pressing plate on the clamping assembly arranged at the welding station can only shape and press the single tab in the welding area without contacting the adjacent tabs, thereby avoiding the situation where the battery cell tabs are repeatedly pressed and the tab shape changes due to the use of a full-pressure pressing plate. The tab shape is effectively improved, and the problems of adapter plate crushing, fracturing, adapter plate deformation, and tab stratification are solved. In addition, the tab pressing plate can be connected to the vacuum head through the position adjustment mechanism, and the vacuum head is connected to the external negative pressure equipment, so that the tab pressing plate and the welding head can be effectively cleaned, reducing the secondary pollution of the battery cell by dust, reducing the internal resistance, reducing defects, and significantly improving the battery quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A schematic diagram of the structure of a welding device according to an embodiment of the present application;

[0024] Figure 2 It is a structural schematic diagram of the position adjustment mechanism of an embodiment of the present application;

[0025] Figure 3 A partial cross-sectional view of a vacuum cleaner head according to an embodiment of the present application;

[0026] Figure 4 This is a schematic diagram of the structure of a tray assembly according to an embodiment of the present application;

[0027] Figure 5 This is a schematic structural diagram of a first elastic pressing member according to an embodiment of the present application;

[0028] Figure 6 This is a schematic structural diagram of a second elastic pressing member according to an embodiment of the present application;

[0029] Figure 7 A schematic top view of a tray assembly according to an embodiment of the present application;

[0030] Figure 8 It is a schematic diagram of the arrangement of the left and right clamping mechanisms of an embodiment of the present application;

[0031] Fig. 9 It is a schematic diagram of the implementation of the battery core welding according to the embodiment of the present application.

[0032] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0033] 1. Tray assembly; 11. Support platform; 12. Placement plate; 13. First fixed block; 14. First movable block; 15. First elastic top fastener; 151. Mounting block; 152. First guide column; 153. First slide; 154. First spring; 155. Pin rod; 156. First roller;

[0034] 16. second fixed block; 17. second movable block; 18. second elastic pressing member; 181. guide block; 182. second guide column; 183. second slide; 184. second spring; 185. second roller; 19. limit seat; 191. groove; 192. through hole;

[0035] 2. Clamping assembly; 21. Mounting plate; 22. Driving component; 23. Lifting plate; 24. Tab pressing plate; 241. Clearance hole; 2411. Inclined surface; 25. Second angle code; 251. Fourth oblong hole; 26. Elastic top tightening component; 261. U-shaped frame; 262. Cell pressing plate; 263. Third spring; 264. Limit buffer;

[0036] 3. Dust collection assembly; 31. Dust collection head; 32. Notch; 33. Pad; 331. First oblong hole; 34. First angle code; 341. Second oblong hole; 342. Third oblong hole; 35. Valve; 36. Telescopic tube;

[0037] 4. Welding head; 5. Shift fork; 6. Left welding area; 7. Right welding area. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0039] An embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, which can avoid the battery cell tab being repeatedly compressed during the welding process, causing the tab shape to change. At the same time, it can effectively clean the tab pressure plate and the welding head to reduce the secondary contamination of the battery cell by dust.

[0040] See also Figures 1 to 9 As shown, an embodiment of the present application provides a welding device for a battery cell tab and a switching sheet, comprising:

[0041] A tray assembly 1, which is used to carry the battery cells and adapters to be welded;

[0042] The pressing assembly 2 includes a tab pressing plate 24 for pressing a single tab of the battery cell, and a lifting plate 23 for lifting and lowering the tab pressing plate 24. The tab pressing plate 24 is provided with a clearance hole 241 for exposing the tab to allow the welding head 4 to enter for welding;

[0043] The dust collection assembly 3 includes a dust collection head 31 and a position adjustment mechanism connecting the dust collection head 31 and the lifting plate 23 . The position adjustment mechanism is used to adjust the position of the dust collection head 31 so that the dust collection port of the dust collection head 31 docks with the clearance hole 241 .

[0044] The clamping assembly 2 of the welding device for the battery cell tab and the adapter plate in the embodiment of the present application is provided with a tab pressing plate 24 for pressing a single tab of the battery cell. The tab pressing plate 24 is provided with a clearance hole 241 for exposing the tab to allow the welding head 4 to enter for welding. Therefore, during the welding process of the battery cell tab and the adapter plate, the tab pressing plate 24 on the clamping assembly 2 arranged at the welding station can only shape and press the single tab in the welding area without contacting the adjacent tabs.

[0045] It avoids the situation that the battery cell tabs are repeatedly pressed by the full-pressure pressing plate, which causes the tab shape to change. It effectively improves the tab shape and solves the problems of adapter plate crushing, fracturing, adapter plate deformation, and tab stratification.

[0046] In addition, the position adjustment mechanism can make the clearance hole 241 of the pole tab pressure plate 24 dock with the vacuum head 31. When in use, the vacuum head 31 is connected to the external negative pressure equipment, and negative pressure dust removal can be performed during welding, which can effectively clean the pole tab pressure plate 24 and the welding head 4, reduce the secondary pollution of the battery cell by dust, reduce the internal resistance, reduce defects, and significantly improve the battery quality rate.

[0047] In some alternative embodiments: See Figure 2 As shown, the embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, wherein a position adjustment mechanism of the welding device for a battery cell tab and an adapter plate comprises a pad 33 bolted to a lifting plate 23, and a first angle code 34 bolted to the pad 33, and a dust collector head 31 is bolted to the first angle code 34;

[0048] The cushion block 33 is provided with a first oblong hole 331 extending in a first direction and for passing bolts. The first angle code 34 is provided with a second oblong hole 341 extending in a second direction and for passing bolts, and a third oblong hole 342 extending in a third direction and for passing bolts.

[0049] The position adjustment mechanism of the embodiment of the present application includes a pad block 33 and a first angle code 34. The pad block 33 is connected to the first angle code 34 by bolts, and the first angle code 34 is connected to the dust collector 31 by bolts. Since the pad block 33 is provided with a first oblong hole 331 extending along the first direction and used for passing the bolt, the relative position of the pad block 33 and the lifting plate 23 can be adjusted by loosening and tightening the bolts, thereby changing the position of the dust collector 31 indirectly connected to the pad block 33 in the first direction.

[0050] Since the first angle code 34 is provided with a second oblong hole 341 extending along the second direction and used for passing the bolt, the relative position of the first angle code 34 and the cushion block 33 can be adjusted by loosening or tightening the bolt, thereby changing the position of the vacuum head 31 connected to the first angle code 34 in the second direction.

[0051] Since the first angle code 34 is provided with a third oblong hole 342 extending along the third direction and used for passing a bolt, the relative position of the first angle code 34 and the vacuum head 31 can be adjusted by loosening or tightening the bolt, thereby changing the position of the vacuum head 31 in the third direction.

[0052] It should be noted that the first direction is the X direction shown in the figure, the second direction is the Y direction shown in the figure, and the third direction is the Z direction shown in the figure.

[0053] In some alternative embodiments: See Figure 2As shown, an embodiment of the present application provides a welding device for a battery cell pole tab and an adapter plate, wherein a second angle code 25 is bolted to a lifting plate 23 of the welding device for a battery cell pole tab and an adapter plate, and a pole tab pressure plate 24 is bolted to the second angle code 25, and a fourth oblong hole 251 extending along the first direction and used for passing the bolt is provided on the second angle code 25.

[0054] The tab pressing plate 24 of the embodiment of the present application is installed on the lifting plate 23 through the second angle code 25. Since the second angle code 25 is provided with a fourth oblong hole 251 extending in the first direction and used for passing bolts, the relative position of the second angle code 25 and the tab pressing plate 24 can be adjusted by loosening and tightening the bolts, thereby changing the position of the tab pressing plate 24 in the third direction, so as to facilitate the tab pressing plate 24 to align with the single tab of the battery cell for shaping and pressing. Exemplarily, in this embodiment, the tab pressing plate 24 presses the two ends of the single tab of the battery cell respectively through two protrusions at the bottom.

[0055] In some alternative embodiments: See Figure 1 As shown, an embodiment of the present application provides a welding device for a battery cell tab and an adapter plate. The dust suction assembly 3 of the welding device for a battery cell tab and an adapter plate also includes a valve 35 for controlling the air flow of a dust suction head 31 , and the valve 35 is connected to the dust suction head 31 through a telescopic tube 36 .

[0056] The vacuum head 31 of the embodiment of the present application is connected to a valve 35 through a telescopic tube 36, which can prevent the vacuum head 31 from causing interference with parts when it rises and falls with the lifting plate 23. When the valve 35 is connected to an external negative pressure device, the opening and closing of the air source can be controlled. For example, the valve 35 in this embodiment adopts a butterfly valve, and the dust removal time can be controlled by controlling the opening and closing of the butterfly valve, saving air pressure resources.

[0057] In some alternative embodiments: See Figures 1 to 3 As shown, an embodiment of the present application provides a welding device for a battery cell pole ear and an adapter plate, wherein the end of a vacuum head 31 of the welding device for a battery cell pole ear and an adapter plate close to the vacuum port thereof is bent along a first direction, and a notch 32 for avoiding a welding head 4 is provided at the vacuum end of the vacuum head 31, and the clearance hole 241 has a slope 2411 for fitting the vacuum head 31.

[0058] The end of the vacuum head 31 in the embodiment of the present application close to its vacuum port is bent along the first direction to avoid the welding head 4 fed from the first direction. The notch 32 set at the vacuum end of the vacuum head 31 can allow the welding head 4 to pass through, while making the vacuum port at the notch 32 surround the outside of the welding head 4, effectively ensuring the negative pressure dust removal effect. In addition, the clearance hole 241 is avoided to be set as a slope 2411, which is convenient for docking the vacuum head 31.

[0059] In some alternative embodiments: See Figure 4As shown, an embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, wherein a tray assembly 1 of the welding device for a battery cell tab and an adapter plate comprises a support table 11 and a placement plate 12 disposed on the support table 11 for carrying the battery cell, and the support table 11 is provided with a first clamping mechanism for clamping and positioning the battery cell along a first direction, and a second clamping mechanism for clamping and positioning the battery cell along a second direction.

[0060] The number of the placement plates 12 in the embodiment of the present application is two and they are symmetrically fixed on the support platform 11 for supporting two battery cells to be welded. At the same time, the support platform 11 is also equipped with a first clamping mechanism and a second clamping mechanism for each placement plate 12, which can clamp and position the battery cell in two directions to avoid malfunction of the battery cell during welding of the battery cell tabs and the adapter sheets.

[0061] In some alternative embodiments: See Figures 4 to 6 As shown, an embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, wherein a first clamping mechanism of the welding device for a battery cell tab and an adapter plate comprises a first fixed block 13, a first movable block 14 and a first elastic tightening member 15 for driving the first movable block 14 to approach the first fixed block 13, which are arranged on a support platform 11; and a second clamping mechanism comprises a second fixed block 16, a second movable block 17 and a second elastic tightening member 18 for driving the second movable block 17 to approach the second fixed block 16, which are arranged on the support platform 11.

[0062] The first fixed block 13 of the embodiment of the present application is fixed on the support 11 to limit the end of the battery cell pole ear, and the first elastic pressing member 15 is installed on the support 11 to drive the first movable block 14 to approach the first fixed block 13, thereby clamping the battery cell in the first direction.

[0063] Exemplarily, in this example, the first elastic tightening member 15 includes a mounting block 151 fixed on the support 11, a first guide column 152 is fixed on the mounting block 151, the first guide column 152 is slidably connected to a first slide 153 at one end away from the mounting block 151, the first slide 153 is connected to the support 11 through a sliding pair, a sliding groove for mounting the first guide column 152 is provided on the first slide 153, a first spring 154 is provided in the sliding groove, the first movable block 14 is fixed on the first slide 153, and under the elastic pushing force of the first spring 154, the first slide 153 can drive the first movable block 14 to approach the first fixed block 13.

[0064] The second fixed block 16 of the embodiment of the present application is fixed on the support 11 to limit one side of the battery cell, and the second elastic clamping member 18 is installed on the support 11 to drive the second movable block 17 to approach the second fixed block 16, thereby clamping the battery cell in the second direction.

[0065] Exemplarily, in this example, the second elastic tightening member 18 includes a guide block 181 fixed on the support 11, and a second guide column 182 is slidably connected to the guide block 181. A second slide 183 is fixed to the end of the second guide column 182 away from the guide block 181. The second slide 183 is connected to the support 11 through a sliding pair, and the second movable block 17 is fixed on the second slide 183. The second guide column 182 is sleeved with a second spring 184 located between the guide block 181 and the second slide 183. Under the elastic pushing force of the second spring 184, the second slide 183 can drive the second movable block 17 to approach the second fixed block 16.

[0066] In some alternative embodiments: See Figures 4 to 6 As shown, an embodiment of the present application provides a welding device for a battery cell tab and an adapter plate, which also includes a driving component for pushing a first elastic tightening member 15 and a second elastic tightening member 18, wherein the movable end of the first elastic tightening member 15 is connected to a first roller 156 via a pin rod 155, and the movable end of the second elastic tightening member 18 is connected to a second roller 185, and the driving component includes a fork 5 for pushing the first roller 156 so that the first roller 156 pushes the second roller 185.

[0067] The shift fork 5 of the embodiment of the present application can push the first roller 156 so that the first roller 156 drives the first elastic tightening member 15 to release the clamped battery cell. At the same time, the first roller 156 can drive the second roller 185 when it moves, so that the second roller 185 drives the second elastic tightening member 18 to release the clamped battery cell.

[0068] Exemplarily, in this example, a pin rod 155 passing through an opening on the support platform 11 is fixed to the bottom surface of the first slide 153 of the first elastic tightening member 15, and the lower end of the pin rod 155 is rotatably connected to the first roller 156. A second roller 185 in contact with the first roller 156 is rotatably connected to the second slide 183 of the second elastic tightening member 18. When the fork 5 moves along the second direction and approaches the first roller 156, the end of the fork 5 can squeeze the first roller 156 and move the first roller 156 along the first direction. At the same time, the first roller 156 squeezes and drives the second roller 185, so that the second roller 185 moves along the second direction.

[0069] In some alternative embodiments: See Figure 4 As shown, an embodiment of the present application provides a welding device for a battery cell pole ear and an adapter plate, and a support 11 of the welding device for a battery cell pole ear and an adapter plate is also provided with a limit seat 19 for placing the adapter plate, and the limit seat 19 is provided with a groove 191 for positioning the adapter plate, and a through hole 192 for preventing the adapter plate and the limit seat 19 from being welded.

[0070] A limit seat 19 is fixedly installed on the support table 11 of the embodiment of the present application. The limit seat 19 is located between two symmetrically arranged placement plates 12 and is used to place the adapter. The limit seat 19 is provided with a groove 191 that is adapted to the shape of the adapter and can position the inserted adapter. At the same time, a through hole 192 corresponding to the welding area is provided on the limit seat 19 to avoid the energy on the welding head 4 being transferred to the limit seat 19 during welding, causing the adapter and the limit seat 19 to be welded together.

[0071] In some alternative embodiments: See Figure 1 As shown, an embodiment of the present application provides a welding device for a battery cell pole ear and an adapter plate, wherein a clamping assembly 2 of the welding device for a battery cell pole ear and an adapter plate comprises a mounting plate 21 for slidingly mounting a lifting plate 23, and a driving component 22 disposed on the mounting plate 21 and used for driving the lifting plate 23 to rise and fall, and an elastic clamping component 26 for clamping a large surface of the battery cell is also disposed on the lifting plate 23.

[0072] The mounting plate 21 of the embodiment of the present application is fixed on the welding station, and is slidably connected to the lifting plate 23 via a sliding pair. The driving component 22 is fixed on the mounting plate 21 to drive the lifting plate 23 to rise and fall. For example, the driving component 22 can be an electric or pneumatic telescopic cylinder. In addition, the lifting plate 23 is also equipped with an elastic pressing component 26 for pressing the large surface of the battery cell, which can ensure the effective fixing of the battery cell position.

[0073] Exemplarily, in this example, the elastic tightening component 26 includes a U-shaped frame 261 that passes through the lifting plate 23 and is slidably connected to the lifting plate 23, and a battery cell pressure plate 262 located below the lifting plate 23 is fixed to the end of the U-shaped frame 261. A third spring 263 located between the battery cell pressure plate 262 and the lifting plate 23 is sleeved on the U-shaped frame 261, and a limit buffer 264 connected to the top surface of the lifting plate 23 is fixed on the U-shaped frame 261.

[0074] For example, the specific welding method of the welding device of the embodiment of the present application includes:

[0075] See also Figures 1 to 9 As shown, the battery cell to be welded is placed on the placement plate 12 of the tray assembly 1 at the front workstation and clamped and fixed. The tray assembly 1 is moved to be aligned directly below the clamping assembly 2 on the left, that is, the left welding area 6 of the battery cell to be welded is aligned with the tab pressure plate 24, and the elastic clamping component 26 descends with the lifting plate 23 to press the large surface of the battery cell, and the tab pressure plate 24 presses the left welding area 6, and the welding head 4 of the welding machine moves along the second direction to above the vacuum head 31 and the tab pressure plate 24.

[0076] At this time, the valve 35 is opened, and the vacuum head 31 is controlled to start negative pressure extraction, and then the welding head 4 of the welding machine is lowered along the third direction to the left welding area 6 for welding, and the vacuum head 31 surrounds the welding head 4 of the welding machine, and the welding slag and dust will be directly sucked away by the vacuum head 31. After the welding is completed, the welding head 4 of the welding machine rises along the third direction, and then returns to the safety position along the second direction. At this time, the valve 35 is closed to stop vacuuming, and the lifting plate 23 rises to complete the welding of the left welding area 6.

[0077] After the left welding area 6 is welded, the tray assembly 1 moves with the battery cell to be welded to the right side clamping assembly 2 and aligns it, that is, the right welding area 7 of the battery cell to be welded is aligned with the pole ear pressure plate 24, and the lifting plate 23 descends to prepare for welding. The process is the same as the left side, and after welding is completed, it flows into the rear workstation.

[0078] In the description of the present application, it should be noted that the terms "upper", "lower", etc. 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 application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0079] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0080] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A welding device for a battery cell tab and a switching plate, characterized in that: include: A tray assembly (1) for carrying the battery cells and adapter sheets to be welded; A pressing assembly (2), comprising a tab pressing plate (24) for pressing a single tab of a battery cell, and a lifting plate (23) for driving the tab pressing plate (24) to move up and down, wherein the tab pressing plate (24) is provided with a clearance hole (241) for exposing the tab to allow a welding head (4) to enter for welding; A dust suction assembly (3) comprises a dust suction head (31) and a position adjustment mechanism connecting the dust suction head (31) and a lifting plate (23), wherein the position adjustment mechanism is used to adjust the position of the dust suction head (31) so that the dust suction port of the dust suction head (31) docks with the clearance hole (241).

2. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: The position adjustment mechanism comprises a cushion block (33) bolted to the lifting plate (23), and a first angle bracket (34) bolted to the cushion block (33), and the dust collector head (31) is bolted to the first angle bracket (34); The cushion block (33) is provided with a first oblong hole (331) extending in a first direction and used for passing bolts, the first angle code (34) is provided with a second oblong hole (341) extending in a second direction and used for passing bolts, and a third oblong hole (342) extending in a third direction and used for passing bolts.

3. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: A second angle code (25) is bolted to the lifting plate (23), the tab pressure plate (24) is bolted to the second angle code (25), and the second angle code (25) is provided with a fourth oblong hole (251) extending in the first direction and used for passing the bolt.

4. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: The dust collection assembly (3) further comprises a valve (35) for controlling the air flow of the dust collection head (31) to be cut off; the valve (35) is connected to the dust collection head (31) via a telescopic tube (36).

5. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: One end of the dust suction head (31) close to its dust suction port is curved along a first direction, the dust suction end of the dust suction head (31) is provided with a notch (32) for avoiding the welding head (4), and the clearance hole (241) has an inclined surface (2411) for fitting the dust suction head (31).

6. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: The tray assembly (1) comprises a support platform (11) and a placement plate (12) arranged on the support platform (11) for carrying the battery cell. The support platform (11) is provided with a first clamping mechanism for clamping and positioning the battery cell along a first direction, and a second clamping mechanism for clamping and positioning the battery cell along a second direction.

7. The welding device for a battery cell tab and a switching piece according to claim 6, characterized in that: The first clamping mechanism comprises a first fixed block (13) arranged on the support platform (11), a first movable block (14) and a first elastic pressing member (15) for driving the first movable block (14) to approach the first fixed block (13); the second clamping mechanism comprises a second fixed block (16) arranged on the support platform (11), a second movable block (17) and a second elastic pressing member (18) for driving the second movable block (17) to approach the second fixed block (16).

8. The welding device for a battery cell tab and a switching piece according to claim 7, characterized in that: The invention also comprises a driving assembly for pushing the first elastic pressing member (15) and the second elastic pressing member (18); the movable end of the first elastic pressing member (15) is connected to the first roller (156) via a pin rod (155); the movable end of the second elastic pressing member (18) is connected to the second roller (185); the driving assembly comprises a shift fork (5) for pushing the first roller (156) so that the first roller (156) pushes the second roller (185).

9. The welding device for a battery cell tab and a switching piece according to claim 6, characterized in that: The support platform (11) is also provided with a limiting seat (19) for placing the adapter plate, and the limiting seat (19) is provided with a groove (191) for positioning the adapter plate, and a through hole (192) for preventing the adapter plate and the limiting seat (19) from being welded.

10. The welding device for a battery cell tab and a switching piece according to claim 1, characterized in that: The clamping assembly (2) comprises a mounting plate (21) for slidably mounting the lifting plate (23), and a driving component (22) disposed on the mounting plate (21) and used for driving the lifting plate (23) to move up and down. The lifting plate (23) is also provided with an elastic pressing component (26) for clamping the large surface of the battery cell.

Images