CN113285114A

CN113285114A - Welding of lithium-ion battery pole piece utmost point ear and end cover packaging hardware

Info

Publication number: CN113285114A
Application number: CN202110592965.4A
Authority: CN
Inventors: 钟思兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-28
Filing date: 2021-05-28
Publication date: 2021-08-20
Anticipated expiration: 2041-05-28
Also published as: CN113285114B

Abstract

The invention discloses a device for welding a pole lug of a lithium battery pole piece and packaging an end cover, and belongs to the technical field of lithium battery production. The device comprises a machine table, wherein a tab welding table and an end cover packaging table are respectively arranged on the machine table, an installation arm is arranged on the machine table, and a welding manipulator for welding a tab and a sealing manipulator for sealing a cover are arranged on the installation arm; the welding manipulator consists of two groups of welding hands, a first air cylinder arranged on the welding hands and a pressing plate fixed at the end part of a piston rod of the first air cylinder; the cover sealing mechanical arm is composed of a second air cylinder arranged on the mounting arm, a mounting plate fixed at the end part of a piston rod of the second air cylinder, two groups of driving boxes fixed at the bottom of the mounting plate and four magnetic screw mounting heads at the bottom of the driving boxes; the device realizes automatic welding of pole piece tabs, automatic assembly of pole piece shells and automatic encapsulation of end covers, and the whole process is continuous without interruption, can synchronous operation, reduces current operation steps, improves efficiency, and reduces the labor cost input.

Description

Welding of lithium-ion battery pole piece utmost point ear and end cover packaging hardware

Technical Field

The invention belongs to the technical field of lithium battery production, and particularly relates to the technical field of a lithium battery pole piece tab welding and end cover packaging device.

Background

The world energy and environmental protection situation are increasingly tense, and batteries are more and more favored by people as power energy. The lithium ion battery gradually becomes the first choice in the energy field due to the obvious advantages of high energy density, small volume, light weight, environmental protection, no pollution, no memory effect and the like. In the economic policy currently being implemented, one of the energy supply systems adopted by new energy automobiles is a lithium ion battery module, and the importance of the development of lithium ion batteries in the energy field is more and more prominent.

The lithium ion battery comprises a pole piece and a pole lug, wherein the pole piece is used for winding to form a battery pole group, the pole lug is welded on the pole piece and extends out of the battery pole group, the positive pole or the negative pole of the battery pole group is led out, the welded pole piece battery pole group is assembled in a battery shell and sealed, at present, the pole piece and the pole lug are welded on a production line, the pole piece is fixed to a welding station through manpower during welding, the battery pole piece battery pole group is taken out again through manpower after welding is completed and is conveyed to a shell assembling station through a conveyor belt, the shell assembling and the sealing process are continuously conveyed to the sealing station, the same is realized, the shell assembling and the sealing process both need to be matched and fixed and are carried out with manpower, the continuity of the whole process is poor, the operation steps are multiple, the transfer time is longer, the production efficiency of the whole lithium battery is reduced to a certain extent, more manpower is consumed, and the labor cost input of enterprises is increased.

Disclosure of Invention

The invention aims to: the device for welding the pole lugs of the lithium battery pole piece and packaging the end cover aims to solve the problems of discontinuity, poor efficiency and low automation degree of the current lithium battery production process.

In order to achieve the purpose, the invention adopts the following technical scheme: a device for welding a pole lug of a lithium battery pole piece and packaging an end cover comprises a machine table, wherein a pole lug welding table and an end cover packaging table are respectively arranged on the machine table, an installation arm is installed on the machine table, and a welding manipulator for welding the pole lug and a sealing manipulator for sealing a cover are installed on the installation arm; the welding manipulator consists of two groups of welding hands, a first air cylinder arranged on the welding hands and a pressing plate fixed at the end part of a piston rod of the first air cylinder; the cover sealing mechanical arm is composed of a cylinder II arranged on an installation arm, an installation plate fixed at the end part of a piston rod of the cylinder II, two groups of driving boxes fixed at the bottom of the installation plate and four magnetic screw installation heads at the bottom of the driving boxes, wherein the driving boxes are used for driving the four magnetic screw installation heads to synchronously rotate; the welding device comprises a lug welding table, a feeding unit, a fixing unit and a blanking unit, wherein the lug welding table is provided with two material holes, a pole piece battery level group is arranged in each material hole, the feeding unit is used for conveying the pole piece battery level group to be welded, the fixing unit is used for fixing the pole piece battery level group for subsequent welding, and the blanking unit is used for blanking the welded pole piece battery level group; the end cover packaging table is provided with a plurality of placing grooves, a battery shell is placed in each placing groove, and a driving unit for driving the end cover packaging table to rotate is arranged below the end cover packaging table; and a shell feeding mechanism for conveying a battery shell is arranged on one side of the end cover packaging table, and a screw feeding mechanism for conveying and installing an end cover is arranged on the other side of the end cover packaging table.

By adopting the scheme, the automatic feeding and the blanking after welding of the multi-pole-piece battery level group are realized through the pole lug welding table, the automatic assembly of the pole pieces and the battery shell is realized, the automatic welding of the pole piece pole lugs, the automatic assembly of the pole piece shell and the automatic packaging of the end covers are realized by matching the end cover screw feeding mechanism and the shell feeding mechanism, the whole process is continuous and uninterrupted, the synchronous operation is realized, the production efficiency of the lithium battery is improved, and the labor cost investment of enterprises is reduced.

As a preferred embodiment, the pay-off unit comprises two sets of deflectors one of fixing on utmost point ear welding bench, two dead levers of fixing on utmost point ear welding bench, sliding connection at the movable rod on the dead lever, fix the pay-off roof and the cover of movable rod one end and establish the spring on the dead lever and constitute, the spring acts on the movable rod, the pay-off roof is located two deflectors one and contradicts with the side of pole piece battery level group.

By adopting the scheme, the automatic feeding of the pole piece battery level group is realized through the feeding unit, the continuous welding work is ensured, the labor is not needed, and the pole lug welding efficiency is improved.

As a preferred embodiment, the fixed assembly is composed of a fixed clamping plate fixed on the top of the tab welding table, a movable clamping plate connected to the top of the tab welding table in a sliding manner and opposite to the fixed clamping plate, and a micro cylinder for driving the movable clamping plate to move, and the pole piece battery stage group is clamped between the fixed clamping plate and the movable clamping plate.

By adopting the scheme, the side face of the pole piece battery assembly is fixed by the fixing assembly when the pole lugs are welded, so that the phenomenon of displacement of the pole piece battery assembly during welding is prevented, the welding stability is improved, and the welding quality is ensured.

As a preferred embodiment, the top middle position of the fixed clamping plate is provided with a positioning block, the side surface of the movable clamping plate is provided with a guide assembly, the guide assembly comprises a guide sleeve fixed on the tab welding table and a guide post fixed on the side surface of the movable clamping plate, and the guide sleeve is connected to the guide post in a sliding manner.

By adopting the scheme, the feeding position of the pole piece battery assembly is positioned through the positioning block, so that the pole piece battery assembly is right opposite to the material hole, the subsequent material hole is convenient for discharging the welded pole piece battery assembly, the guide assembly guides the movable clamping plate, and the stability of the movable clamping plate during movement is improved.

As a preferred embodiment, the unloading unit comprises a cylinder I on the welding manipulator, a pressing plate, material holes, a sealing frame connected to the bottom surface of the tab welding table in a sliding manner, a screw rod connected to the bottom surface of the tab welding table in a rotating manner and connected with the sealing frame in a threaded manner, and a micro motor used for driving the sealing frame to move, wherein the sealing frame and the two material holes are arranged just opposite to each other.

By adopting the scheme, automatic blanking operation of the welded pole piece battery assembly is realized through the blanking unit, no manual operation is needed, the continuity is strong, the consumed time is short, and the efficiency is high.

As a preferred embodiment, a pole piece guide sleeve is fixed at the bottom of the tab welding table, a shell guide sleeve is arranged at the bottom of the pole piece guide sleeve, and the pole piece guide sleeve is opposite to the shell guide sleeve.

By adopting the scheme, the electrode plate battery level group is guided through the electrode plate guide sleeve during blanking, and the shell guide sleeve guides the battery shell, so that the electrode plate battery level group is accurately aligned with the battery shell, and the electrode plate battery level group is conveniently matched into the battery shell.

As a preferred embodiment, the drive unit comprises a motor mounting rack fixed at the top of the machine table, a motor I installed on the motor mounting rack, a driving wheel connected to an output shaft of the motor I, a driven turntable connected to the top of the machine table in a rotating mode through driving wheel belt transmission, and a lifting cylinder installed at the top of the driven turntable, wherein a piston rod of the lifting cylinder is connected with the bottom of the end cover packaging table.

By adopting the scheme, the end cover packaging table is driven to lift and rotate one hundred eighty degrees by the driving unit, the welded pole piece battery level group is switched to the cover sealing station, meanwhile, the battery shell to be assembled is automatically fed into the shell guide sleeve to be aligned, assembly operation is carried out, the continuity of the whole process is ensured, and the production efficiency of equipment is improved.

As a preferred embodiment, the shell feeding mechanism is composed of a material platform mounting plate which is connected to the top of a machine platform in a sliding manner, a first propelling cylinder which is used for driving the material platform mounting plate to move, a feeding platform which is fixedly arranged at the top of the material platform mounting plate, two alignment holes which are formed in one side of the top of the feeding platform, a second three guide plates which are fixed at the top of the feeding platform, a feeding plate which is connected to the top of the feeding platform in a sliding manner, an electric push rod which is used for driving the feeding plate to move, a fixed plate which is fixed at the top of the feeding plate, a pressing plate which is connected to the top of the feeding plate in a sliding manner, a screw rod which is rotatably connected to the top of the feeding plate and is in threaded connection with the pressing plate, and a second motor which is used for driving the screw rod to rotate, and two sets of a plurality of battery case sliding connection compress tightly through fixed plate and pressure strip between deflector two, the top of board is equipped with the guide rail, material platform mounting panel sliding connection is on the guide rail.

By adopting the scheme, the automatic feeding operation of the battery shell is realized through the shell feeding mechanism, and the automatic feeding operation is automatic, convenient and efficient.

As a preferred embodiment, the screw feeding mechanism is composed of a vertical plate fixed on the machine table, a second propulsion cylinder fixed at the top end of the vertical plate, a screw discharging plate connected to the end part of a piston rod of the second propulsion cylinder, and a plurality of screw placing holes formed in the screw discharging plate.

By adopting the scheme, the automatic feeding of the magnetic screws is realized through the screw feeding mechanism, and the automatic feeding is convenient and efficient.

As a preferred embodiment, a driving roller is driven inside the driving box through a motor, four driven rollers are rotatably connected inside the driving box, a transmission belt is arranged between each driven roller and the driving roller, and the driven rollers are fixedly connected with the magnetic screw mounting heads.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

the automatic feeding and blanking of the multi-pole-piece battery level group are realized through the pole lug welding table, the automatic assembly of the pole pieces and the battery shell is realized, and the automatic welding of the pole pieces and the pole piece shell, the automatic assembly of the pole piece shell and the automatic encapsulation of the end cover are realized by matching the end cover screw feeding mechanism and the shell feeding mechanism, so that the whole process is continuous and uninterrupted, the synchronous operation can be realized, the production efficiency of the lithium battery is improved, and the labor cost investment of enterprises is reduced;

the electrode lugs are fixed on the electrode plates through the pressing plates on the electrode plate welding manipulator, so that the subsequent electrode lug welding operation is facilitated, the pressing plates continue to descend after welding, the battery level group of the electrode plates is pressed down to realize automatic discharging and assembly with the battery shell, the manual operation is not needed, and the advantages of short time consumption and high efficiency are realized;

according to the invention, a plurality of pole piece battery level groups are arranged in a line between the two guide plates I, when a pair of tabs are welded and discharged, the spring acts on the feeding top plate, so that the automatic feeding of the pole piece battery level groups is realized, and the side surfaces of the pole piece battery level groups are fixed through the movable clamping plate and the fixed clamping plate, so that the stability of pole pieces during tab welding is improved, and the welding quality and efficiency are ensured;

according to the invention, the first guide sleeve guides the discharging of the pole piece battery level group, and the second guide sleeve guides the battery shell, so that the pole piece battery level group can accurately move into the battery shell when discharging, and the rapid assembly of a pole piece and the battery shell is realized;

according to the invention, the battery shell is placed on the end cover packaging table which can be lifted and rotated, so that the automatic feeding of the battery shell for assembling the pole piece battery level group and the discharging of the assembled battery shell to the end cover packaging station are realized, the whole process is continuous, the time consumption is short, the efficiency is high, the automation degree is high, and no manual work is needed;

the automatic feeding device realizes the automatic feeding of the mounting screws by using the screw feeding mechanism, realizes the automatic feeding of the battery shell on the end cover packaging table by using the shell feeding mechanism, is automatic, ensures the continuity of the whole device and improves the efficiency of the device.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a top view of a tab welding station according to the present invention;

fig. 3 is a schematic view of the other side of the upper structure of the tab welding station of the present invention;

FIG. 4 is a schematic structural view of a guide assembly of the present invention;

FIG. 5 is an enlarged view taken at A of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic view of the welding robot of the present invention;

FIG. 7 is a view of the overall structure of the present invention from another side;

FIG. 8 is a schematic structural view of an end cap packaging station according to the present invention;

FIG. 9 is an enlarged view at B of FIG. 8 in accordance with the present invention;

FIG. 10 is a schematic view of a driving structure of the magnetic screw mounting head according to the present invention;

fig. 11 is a schematic structural view of the housing feeding mechanism of the present invention.

Illustration of the drawings:

1. a machine platform; 2. mounting an arm; 3. welding a manipulator; 4. a capping manipulator; 5. a tab welding station; 6. an end cap packaging station; 61. a placement groove; 7. a housing feed mechanism; 8. a screw feeding mechanism; 9. a first guide plate; 10. positioning blocks; 11. fixing the clamping plate; 12. a pole piece battery level group; 13. fixing the rod; 14. a movable rod; 15. feeding a top plate; 16. a spring; 17. a movable clamping plate; 18. a micro cylinder; 19. a guide assembly; 20. material holes; 21. a sealing frame; 22. a micro motor; 23. a screw; 24. a pole piece guide sleeve; 25. a housing guide sleeve; 26. a battery case; 27. welding a hand; 28. a first cylinder; 29. pressing a plate; 30. a motor mounting bracket; 31. a first motor; 32. a driving wheel; 33. a driven turntable; 34. a lifting cylinder; 35. a second air cylinder; 36. mounting a plate; 37. a drive cartridge; 38. a magnetic screw mounting head; 39. actively rotating the roller; 40. a driven roller; 41. a drive belt; 42. a vertical plate; 43. propelling a cylinder II; 44. a screw placing plate; 45. screw placing holes; 46. a guide rail; 47. a material platform mounting plate; 48. propelling a cylinder I; 49. a feeding table; 50. a second guide plate; 51. a feeding plate; 52. an electric push rod; 53. a fixing plate; 54. a compression plate; 55. a second motor; 56. a screw rod; 57. and aligning holes.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-11, the present invention provides a technical solution: a welding and end cover packaging device for a pole piece of a lithium battery comprises a machine table 1, wherein a pole lug welding table 5 and an end cover packaging table 6 are respectively arranged on the machine table 1, an installation arm 2 is installed on the machine table 1, and a welding manipulator 3 for welding a pole lug and a sealing manipulator 4 for sealing a cover are installed on the installation arm 2; the welding manipulator 3 is composed of two groups of welding hands 27, a first air cylinder 28 arranged on the welding hands 27 and a pressure plate 29 fixed at the end part of a piston rod of the first air cylinder 28; the capping manipulator 4 is composed of a second air cylinder 35 mounted on the mounting arm 2, a mounting plate 36 fixed at the end part of a piston rod of the second air cylinder 35, two groups of driving boxes 37 fixed at the bottom of the mounting plate 36 and four magnetic screw mounting heads 38 at the bottom of the driving boxes 37, wherein the driving boxes 37 are used for driving the four magnetic screw mounting heads 38 to synchronously rotate; the electrode lug welding table 5 is provided with a feeding unit, a fixing unit and a blanking unit, the electrode lug welding table 5 is provided with two material holes 20, the material holes 20 are internally provided with electrode plate battery level groups 12, the feeding unit is used for conveying the electrode plate battery level groups 12 to be welded, the fixing unit is used for fixing the electrode plate battery level groups 12 to facilitate subsequent welding, and the blanking unit is used for blanking the welded electrode plate battery level groups 12; a plurality of placing grooves 61 are formed in the end cover packaging table 6, the battery shell 26 is placed in the placing grooves 61, and a driving unit for driving the end cover packaging table 6 to rotate is arranged below the end cover packaging table 6; and a shell feeding mechanism 7 for conveying the battery shell 26 is arranged on one side of the end cover packaging table 6, and a screw feeding mechanism 8 for conveying and mounting the end cover is arranged on the other side of the end cover packaging table 6. The automatic feeding and the blanking after welding of the multi-pole-piece battery level group are achieved through the pole lug welding table, automatic assembly of the pole pieces and the battery shell is achieved, the end cover screw feeding mechanism and the shell feeding mechanism are matched, automatic welding of the pole pieces and the pole piece shell, automatic assembly of the pole piece shell and automatic packaging of the end cover are achieved, the whole process is continuous and uninterrupted, synchronous operation can be achieved, the production efficiency of the lithium battery is improved, and the labor cost input of enterprises is reduced.

The feeding unit is composed of two groups of first guide plates 9 fixed on the tab welding table 5, two fixed rods 13 fixed on the tab welding table 5, movable rods 14 connected to the fixed rods 13 in a sliding mode, a feeding top plate 15 fixed at one end of each movable rod 14 and springs 16 sleeved on the fixed rods 13, the springs 16 act on the movable rods 14, and the feeding top plate 15 is located in the two first guide plates 9 and abuts against the side faces of the pole piece battery level group 12. The automatic feeding of the pole piece battery level group is realized through the feeding unit, the continuous operation of welding is ensured, the labor is not needed, and the pole lug welding efficiency is improved.

The fixing assembly is composed of a fixed clamping plate 11 fixed on the top of the lug welding table 5, a movable clamping plate 17 connected to the top of the lug welding table 5 in a sliding mode and opposite to the fixed clamping plate 11, and a micro cylinder 18 used for driving the movable clamping plate 17 to move, and the pole piece battery level group 12 is clamped between the fixed clamping plate 11 and the movable clamping plate 17. The side face of the pole piece battery assembly is fixed through the fixing assembly when the pole lugs are welded, so that the pole piece battery assembly is prevented from shifting when being welded, the welding stability is improved, and the welding quality is guaranteed.

The middle position of the top of the fixed clamping plate 11 is provided with a positioning block 10, the side surface of the movable clamping plate 17 is provided with a guide assembly 19, the guide assembly 19 comprises a guide sleeve fixed on the tab welding table 5 and a guide post fixed on the side surface of the movable clamping plate 17, and the guide sleeve is connected to the guide post in a sliding manner. The feeding position of the pole piece battery assembly is positioned through the positioning block, so that the pole piece battery assembly is right opposite to the material hole, the welded pole piece battery assembly is conveniently discharged through the subsequent material hole, the guide assembly guides the movable clamping plate, and the stability of the movable clamping plate during movement is improved.

The blanking unit is composed of a first cylinder 28 and a pressing plate 29 on the welding manipulator 3, material holes 20, a sealing frame 21 connected to the bottom surface of the tab welding table 5 in a sliding mode, a screw 23 connected to the bottom surface of the tab welding table 5 in a rotating mode and in threaded connection with the sealing frame 21, and a micro motor 22 used for driving the sealing frame 21 to move, wherein the sealing frame 21 is arranged opposite to the two material holes 20. The automatic blanking operation of the welded pole piece battery assembly is realized through the blanking unit, the labor is not needed, the continuity is strong, the consumed time is short, and the efficiency is high.

A pole piece guide sleeve 24 is fixed at the bottom of the pole lug welding table 5, a shell guide sleeve 25 is arranged at the bottom of the pole piece guide sleeve 24, and the pole piece guide sleeve 24 is opposite to the shell guide sleeve 25. The electrode plate battery level group is guided through the electrode plate guide sleeve during blanking, and the shell guide sleeve guides the battery shell, so that the electrode plate battery level group is accurately aligned with the battery shell, and the electrode plate battery level group is conveniently assembled in the battery shell.

The driving unit is composed of a motor mounting frame 30 fixed on the top of the machine table 1, a first motor 31 installed on the motor mounting frame 30, a driving wheel 32 connected to an output shaft of the first motor 31, a driven turntable 33 connected to the top of the machine table 1 in a belt transmission mode through the driving wheel 32, and a lifting cylinder 34 installed on the top of the driven turntable 33, and a piston rod of the lifting cylinder 34 is connected with the bottom of the end cover packaging table 6.

The end cover packaging table is driven by the driving unit to lift and rotate one hundred eighty degrees, so that the welded pole piece battery level group is switched to a sealing cover station, meanwhile, the battery shell to be assembled is automatically fed and enters the shell guide sleeve to be aligned, assembly operation is carried out, the continuity of the whole process is ensured, and the production efficiency of equipment is improved.

The shell feeding mechanism 7 is composed of a material platform mounting plate 47 connected to the top of the machine platform 1 in a sliding manner, a first propelling cylinder 48 used for driving the material platform mounting plate 47 to move, a feeding platform 49 fixedly mounted on the top of the material platform mounting plate 47, two aligning holes 57 arranged on one side of the top of the feeding platform 49, three guide plates 50 fixed to the top of the feeding platform 49, a feeding plate 51 connected to the top of the feeding platform 49 in a sliding manner, an electric push rod 52 used for driving the feeding plate 51 to move, a fixing plate 53 fixed to the top of the feeding plate 51, a pressing plate 54 connected to the top of the feeding plate 51 in a sliding manner, a screw rod 56 rotatably connected to the top of the feeding plate 51 and in threaded connection with the pressing plate 54, and a second motor 55 used for driving the screw rod 56 to rotate, two groups of a plurality of battery shells 26 are connected between the guide plates 50 in a sliding manner and are pressed with the pressing plate 54 through the fixing plate 53, a guide rail 46 is arranged on the top of the machine platform 1, the material table mounting plate 47 is slidably connected to the guide rail 46. The automatic feeding operation of the battery shell is realized through the shell feeding mechanism, and the automatic feeding operation is automatic, convenient and efficient.

The screw feeding mechanism 8 is composed of a vertical plate 42 fixed on the machine table 1, a propulsion cylinder II 43 fixed at the top end of the vertical plate 42, a screw discharging plate 44 connected to the end part of a piston rod of the propulsion cylinder II 43 and a plurality of screw placing holes 45 arranged on the screw discharging plate 44. The automatic feeding of the magnetic screws is realized through the screw feeding mechanism, and the automatic feeding is convenient and efficient.

The driving roller 39 is driven by a motor in the driving box 37, four driven rollers 40 are rotatably connected in the driving box 37, a transmission belt 41 is arranged between the driven rollers 40 and the driving roller 39, and the driven rollers 40 are fixedly connected with the magnetic screw mounting head 38.

The working principle is as follows: when the device is used, firstly, a pole piece battery level group 12 to be welded is placed between two guide plates I9 on a pole lug welding table 5, a spring 16 acts on a feeding top plate 15 through a movable rod 14, the feeding top plate 15 acts on the pole piece battery level group 12 to enable a most front pole piece battery level group 12 to abut against a positioning block 10, namely, a welding station, then a micro cylinder 18 pushes a movable clamping plate 17 to fix the pole piece battery level group 12, so that subsequent pole lug welding operation is facilitated, when a pole lug is welded, two pole lugs are sent to a designated welding position on the pole piece battery level group 12 through equipment, when a welding manipulator 3 is used for welding, the cylinder I28 drives the movable clamping plate 29 to press and fix the pole lug, then the welding manipulator 3 welds and fixes the pole lug on the pole piece battery level group, after welding, the movable clamping plate 17 is opened, a screw 23 is driven by a micro motor 22 to drive a sealing frame 21 to be opened, after the material hole 20 is opened, the pressing plate 29 is driven by the first air cylinder 28 to continuously descend, the welded pole piece battery stage group 12 is pressed out and discharged through the material hole 20, at the moment, the battery shells 26 are placed in the placing groove 61 on the end cover packaging table 6, two of the battery shells 26 are positioned in the shell guide sleeve 25 to be aligned, the pole piece battery stage group 12 is guided by the pole piece guide sleeve 24 when being discharged through the material hole 20, automatic assembly of the pole piece battery stage group 12 and the battery shells 26 is achieved, meanwhile, in the discharging process of the pole piece battery stage group 12, the feeding top plate 15 sends the next pole piece battery stage group 12 into a welding station by the acting force of the spring 16, the next pole piece battery stage group 12 is fixed by the movable clamping plate 17, meanwhile, welding operation is continuously performed, at the moment, the battery shells 26 and the pole piece battery stage group 12 are assembled, the lifting air cylinder 34 controls the end cover packaging table 6 to descend, the first motor 31 drives the driven turntable 33 to rotate by a driving wheel 32 through a belt, and then stops, then the lifting cylinder 34 moves upwards to reset by driving the end cover packaging table 6, at the same time, two battery shells 26 to be assembled on the other side move to a shell assembling station to facilitate the assembly after the welding of the pole lugs, at the same time, the other two assembled battery shells 26 move to the end cover packaging station and are conveyed to a mounting station on the battery shells 26 through equipment, a plurality of magnetic screw mounting heads 38 on a mounting plate 36 are controlled to work simultaneously by a cylinder II 35, the end covers are mounted on the battery shells 26 through screws, the battery shells 26 are taken down after the packaging is completed, the feeding table 49 is pushed by a pushing cylinder I48 to enter a feeding station, an electric push rod 52 pushes a feeding plate 51 to move forwards to a designated feeding position, so that the two battery shells 26 at the front end are aligned with an alignment hole 57, a lead screw 56 is driven by a motor II 55 to drive a pressing plate 54 to loosen due to the action of gravity, two battery shells 26 automatically fall into two placing grooves 61 on an end cover packaging table 6 through alignment holes 57 to realize feeding, after feeding, an electric push rod 52 controls a feeding plate 51 to reset, a first pushing cylinder 48 controls the whole feeding table 49 to reset, in the feeding process of the battery shells 26, a screw feeding mechanism 8 synchronously works, a second pushing cylinder 43 pushes a screw feeding plate 44 to move to the whole lower part of a sealing mechanical arm 4, the sealing mechanical arm 4 moves downwards, a plurality of magnetic screw mounting heads 38 adsorb screws in screw placing holes 45 and move upwards to reset, then the screw feeding plate 44 resets to wait for next sealing operation, so that the operation is performed repeatedly and continuously, welding, assembly and end cover packaging are realized, operation steps are saved, and the production efficiency is improved.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims

1. A device for welding a pole lug of a lithium battery pole piece and packaging an end cover comprises a machine table (1) and is characterized in that a pole lug welding table (5) and an end cover packaging table (6) are respectively arranged on the machine table (1), an installation arm (2) is installed on the machine table (1), and a welding manipulator (3) for welding the pole lug and a sealing manipulator (4) for sealing a cover are installed on the installation arm (2);

the welding manipulator (3) is composed of two groups of welding hands (27), a first cylinder (28) arranged on the welding hands (27) and a pressing plate (29) fixed at the end part of a piston rod of the first cylinder (28);

the capping manipulator (4) is composed of a second air cylinder (35) arranged on the mounting arm (2), a mounting plate (36) fixed at the end part of a piston rod of the second air cylinder (35), two groups of driving boxes (37) fixed at the bottom of the mounting plate (36) and four magnetic screw mounting heads (38) at the bottom of the driving boxes (37), wherein the driving boxes (37) are used for driving the four magnetic screw mounting heads (38) to synchronously rotate;

the welding device is characterized in that a feeding unit, a fixing unit and a blanking unit are arranged on the lug welding table (5), two material holes (20) are formed in the lug welding table (5), a pole piece battery level group (12) is arranged in each material hole (20), the feeding unit is used for conveying the pole piece battery level group (12) to be welded, the fixing unit is used for fixing the pole piece battery level group (12) to facilitate subsequent welding, and the blanking unit is used for blanking the welded pole piece battery level group (12);

a plurality of placing grooves (61) are formed in the end cover packaging table (6), a battery shell (26) is placed in each placing groove (61), and a driving unit for driving the end cover packaging table (6) to rotate is arranged below the end cover packaging table (6);

and a shell feeding mechanism (7) for conveying a battery shell (26) is arranged on one side of the end cover packaging table (6), and a screw feeding mechanism (8) for conveying and installing an end cover is arranged on the other side of the end cover packaging table (6).

2. The device for welding the pole piece and the pole lug of the lithium battery and encapsulating the end cover of the pole piece and the pole piece as claimed in claim 1, wherein the feeding unit is composed of two sets of first guide plates (9) fixed on the pole lug welding table (5), two fixed rods (13) fixed on the pole lug welding table (5), a movable rod (14) connected to the fixed rods (13) in a sliding manner, a feeding top plate (15) fixed at one end of the movable rod (14), and a spring (16) sleeved on the fixed rods (13), wherein the spring (16) acts on the movable rod (14), and the feeding top plate (15) is positioned in the two first guide plates (9) and is abutted against the side surface of the pole piece battery stage group (12).

3. The device for welding the pole piece and the pole lug of the lithium battery and encapsulating the end cover of the pole piece and the pole lug of the lithium battery as claimed in claim 1, wherein the fixing assembly is composed of a fixed clamping plate (11) fixed at the top of the pole lug welding table (5), a movable clamping plate (17) connected to the top of the pole lug welding table (5) in a sliding manner and opposite to the fixed clamping plate (11), and a micro cylinder (18) used for driving the movable clamping plate (17) to move, and the pole piece battery stage group (12) is clamped between the fixed clamping plate (11) and the movable clamping plate (17).

4. The device for welding the pole lug of the lithium battery pole piece and encapsulating the end cover of the lithium battery pole piece according to claim 3, wherein a positioning block (10) is arranged at the middle position of the top of the fixed clamping plate (11), a guide assembly (19) is arranged on the side surface of the movable clamping plate (17), the guide assembly (19) comprises a guide sleeve fixed on the pole lug welding table (5) and a guide post fixed on the side surface of the movable clamping plate (17), and the guide sleeve is slidably connected to the guide post.

5. The device for welding the pole piece of the lithium battery and sealing the end cover of the pole piece of the lithium battery as claimed in claim 1, wherein the blanking unit is composed of a cylinder I (28) and a pressing plate (29) on a welding manipulator (3), a material hole (20), a sealing frame (21) connected to the bottom surface of the pole piece welding table (5) in a sliding manner, a screw rod (23) connected to the bottom surface of the pole piece welding table (5) in a rotating manner and in threaded connection with the sealing frame (21), and a micro motor (22) for driving the sealing frame (21) to move, and the sealing frame (21) is arranged opposite to the two material holes (20).

6. The device for welding the pole lug of the lithium battery pole piece and encapsulating the end cover as claimed in claim 1, wherein a pole piece guide sleeve (24) is fixed at the bottom of the pole lug welding table (5), a shell guide sleeve (25) is arranged at the bottom of the pole piece guide sleeve (24), and the pole piece guide sleeve (24) is opposite to the shell guide sleeve (25).

7. The device for welding the pole lugs of the lithium battery pole pieces and encapsulating the end covers as claimed in claim 1, wherein the driving unit is composed of a motor mounting frame (30) fixed to the top of the machine platform (1), a first motor (31) installed on the motor mounting frame (30), a driving wheel (32) connected to an output shaft of the first motor (31), a driven turntable (33) connected to the top of the machine platform (1) through belt transmission of the driving wheel (32) and rotation, and a lifting cylinder (34) installed at the top of the driven turntable (33), and a piston rod of the lifting cylinder (34) is connected to the bottom of the end cover encapsulating platform (6).

8. The lithium battery pole piece tab welding and end cover packaging device according to claim 1, wherein the shell feeding mechanism (7) comprises a material platform mounting plate (47) connected to the top of the machine platform (1) in a sliding manner, a first pushing cylinder (48) for driving the material platform mounting plate (47) to move, a feeding platform (49) fixedly mounted on the top of the material platform mounting plate (47), two alignment holes (57) formed in one side of the top of the feeding platform (49), three second guide plates (50) fixed on the top of the feeding platform (49), a feeding plate (51) connected to the top of the feeding platform (49) in a sliding manner, an electric push rod (52) for driving the feeding plate (51) to move, a fixing plate (53) fixed on the top of the feeding plate (51), a pressing plate (54) connected to the top of the feeding plate (51) in a sliding manner, a lead screw (56) rotatably connected to the top of the feeding plate (51) and in threaded connection with the pressing plate (54), and a rotation lead screw (56) for driving the lead screw (56) to rotate The second movable motor (55) is arranged, the two groups of battery shells (26) are slidably connected between the second guide plates (50) and are pressed with the pressing plate (54) through the fixing plate (53), the top of the machine table (1) is provided with a guide rail (46), and the material table mounting plate (47) is slidably connected onto the guide rail (46).

9. The device for welding the pole tab of the lithium battery pole piece and encapsulating the end cover as claimed in claim 1, wherein the screw feeding mechanism (8) is composed of a vertical plate (42) fixed on the machine platform (1), a second propulsion cylinder (43) fixed at the top end of the vertical plate (42), a screw discharging plate (44) connected to the end of the piston rod of the second propulsion cylinder (43), and a plurality of screw placing holes (45) formed on the screw discharging plate (44).

10. The lithium battery pole piece tab welding and end cover packaging device of claim 1, wherein the driving roller (39) is driven by a motor inside the driving box (37), four driven rollers (40) are rotatably connected inside the driving box (37), a transmission belt (41) is arranged between the driven rollers (40) and the driving roller (39), and the driven rollers (40) are fixedly connected with the magnetic screw mounting head (38).