CN115365652A - A tab welding equipment for high-power lithium battery packs - Google Patents

Abstract

The invention discloses a tab welding device applied to a high-power lithium battery pack, which comprises a welding case, a water cooling device and a dust suction device, wherein a support driving assembly is arranged at the left side in the welding case, and comprises a support plate, a Z-axis servo lifting platform, a bottom plate, an X-axis servo displacement platform and a Y-axis servo displacement platform, wherein the Z-axis servo lifting platform is connected with the left end of the support plate in a sliding manner; CCD synchronous detection modules are arranged on two sides of the galvanometer welding module, and a laser pressing claw mechanism is arranged in the middle of the front end of the mounting plate; according to the invention, through the arrangement of the supporting driving assembly, the laser pressing claw mechanism can be driven to tightly press the lug and the battery cell, so that the operation is simple and convenient, and the efficiency is high. Through the arrangement of the carrier positioning rotating mechanism, the rapid rotation transposition of the lithium battery pack can be realized, and the welding efficiency of the two sides of the lithium battery pack is improved.

Description

A tab welding equipment for high-power lithium battery packs

technical field

The invention relates to the technical field of lithium battery tab welding, in particular to a tab welding device applied to high-power lithium battery packs.

Background technique

In the production process of lithium battery packs, the tabs need to be bent, rolled and flattened to make them cling to the copper sheet of the busbar, and finally the tabs and the copper sheet of the busbar (ie, the battery cell) are welded together, but now Some welding equipment has a low driving efficiency for the laser head (that is, the laser claw mechanism), and the laser head cannot quickly move to the welding position of the lithium battery pack, which reduces the welding work efficiency, and after the lithium battery pack is welded on one side, Welding on the other side is also required. At this time, manual operation is required to realize the rotation and reversing of the lithium battery pack, which reduces work efficiency. For this reason, we have introduced a welding equipment for high-power lithium battery pack tabs.

Contents of the invention

The purpose of the present invention is to provide a high-power lithium battery pack tab welding equipment to solve the problems raised in the above-mentioned background technology.

In order to achieve the above object, the present invention provides the following technical solutions: a welding equipment for tabs of high-power lithium battery packs, including a welding case, a water cooling device and a dust collection device, the inner right side of the welding case is provided with a The upper double-speed chain conveyor line and the lower double-speed chain conveyor line of the battery pack;

The internal left side of the welding cabinet is provided with a supporting drive assembly, and the supporting drive assembly includes a support plate, a Z-axis servo lifting platform slidingly connected to the left end of the support plate, a base plate at the upper end of the Z-axis servo lifting platform, and a X axis slidingly connected to the upper end of the base plate. The Y-axis servo displacement platform and the Y-axis servo displacement platform sliding on the upper end of the X-axis servo displacement platform;

A galvanometer welding module and a mounting plate are installed on the upper end of the Y-axis servo displacement platform, a CCD synchronous detection module is provided on both sides of the galvanometer welding module, and a laser claw mechanism is installed in the middle of the front end of the mounting plate;

The top of the installation plate is provided with a dust collection cover, which is connected to the suction port of the dust collection device through a hose, and nozzles are installed on both sides of the installation board, and the nozzles are connected to the outlet of the water cooling device through the water pipe. Water port connection;

The upper part of the upper double-speed chain transmission line is equipped with a carrier positioning and rotating mechanism through a bracket. The carrier positioning and rotating mechanism includes a cylinder above the bracket, a rotating cylinder connected to the bottom of the piston rod of the cylinder, and a clamping head connected to the output end of the rotating cylinder. A laser and an industrial computer are installed on the side of the upper end of the support.

Compared with the prior art, the beneficial effect of the present invention is that the lithium battery pack of the present invention is placed on the tray on the upper double-speed chain conveying line, so that the upper double-speed chain conveying line transports the lithium battery pack on the pallet to the welding machine box, Subsequently, the first motor, the second motor, and the third motor work separately to drive the Z-axis servo lifting platform to move up and down in the Z-axis direction, the X-axis servo displacement platform to move in the X-axis direction, and the Y-axis servo displacement platform to move up and down. Move in the Y-axis direction, so that the claws of the laser claw mechanism are facing the tabs of the lithium battery pack, and the tabs and the battery cells are pressed together, so that the laser can be driven by supporting the setting of the drive assembly. The claw mechanism presses the tab and the cell tightly, which is easy, convenient and efficient to operate.

When the single-sided welding of the battery cell of the lithium battery pack is completed, the piston rod of the cylinder is stretched out, so that the rotating cylinder moves down until the clamping head contacts the top of the lithium battery pack, and the clamping head clamps the lithium battery pack, Then the piston rod of the cylinder is retracted, and the rotating cylinder clamps the lithium battery pack through the clamping head, and completes the rotation transposition of the lithium battery pack;

Then, the piston rod of the cylinder is stretched out, so that the rotating cylinder moves down until the bottom of the lithium battery pack is in contact with the tray, and the clamping head no longer holds the lithium battery pack, and finally the lithium battery pack is placed on the tray again. The setting of the carrier positioning and rotating mechanism can realize the rapid rotation and transposition of the lithium battery pack, which is conducive to improving the welding efficiency of its two sides.

Description of drawings

Fig. 1 is a schematic diagram of the overall three-dimensional structure of the present invention;

Fig. 2 is the three-dimensional structure schematic diagram of the disassembly of the welding machine case of the present invention;

Fig. 3 is a three-dimensional structural schematic diagram of the supporting drive assembly and the upper double-speed chain conveyor line of the present invention;

Fig. 4 is the three-dimensional structural schematic diagram of the installation of the first motor and the third motor of the present invention;

Fig. 5 is the three-dimensional structural schematic diagram of the installation of the first motor, the second motor and the first driving box of the present invention;

Fig. 6 is a three-dimensional schematic diagram of the installation of the laser claw pressing mechanism of the present invention;

Fig. 7 is a schematic diagram of the three-dimensional structure of the laser claw pressing mechanism of the present invention;

FIG. 8 is a schematic perspective view of the three-dimensional structure of the carrier positioning and rotating mechanism of the present invention.

In the figure: 1. Welding chassis; 2. Water cooling device; 3. Vacuum suction device; 4. Upper double-speed chain conveyor line; 5. Lower double-speed chain conveyor line; 6. Laser; 7. Hose; 8. Lithium battery pack; 9. Support plate; 10. Bracket; 11. Vehicle positioning and rotating mechanism; 110. Piston rod; 111. Cylinder; 112. Cylinder fixing plate; 113. Polished rod; 114. Rotating cylinder; Machine; 13. The third guide rail; 14. Tray; 15. The first guide rail; 16. The first screw; 17. Z-axis servo lifting platform; 18. The first motor; 19. Base plate; 20. The third motor; 21 , second guide rail; 22, protective cover; 23, X-axis servo displacement platform; 24, Y-axis servo displacement platform; 25, vacuum cover; 26, galvanometer welding module; 27, second drive box; 28, second Drive block; 29, second motor; 30, first drive block; 31, first drive box; 32, CCD synchronous detection module; 33, laser claw pressing mechanism; 331, insulating seat; 332, pressing claw; 333, guide Shaft; 34, mounting plate; 35, nitrogen protection pipe interface; 36, nozzle; 37, bearing seat; 38, first belt.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Figures 1-8, the present invention provides a technical solution: a welding equipment for tabs of high-power lithium battery packs, including a welding case 1, a water cooling device 2 and a dust collection device 3, the inside of the welding case 1 The upper double-speed chain conveyor line 4 and the lower double-speed chain conveyor line 5 for conveying the lithium battery pack 8 are arranged on the right side;

The inner left side of the welding cabinet 1 is provided with a support drive assembly, the support drive assembly includes a support plate 9, a Z-axis servo lifting platform 17 sliding on the left end of the support plate 9, a bottom plate 19 on the upper end of the Z-axis servo lifting platform 17, The X-axis servo displacement platform 23 slidably connected to the upper end of the bottom plate 19 and the Y-axis servo displacement platform 24 slidably connected to the upper end of the X-axis servo displacement platform 23;

The bottom of the left end of the support plate 9 is equipped with a first motor 18, the first pulley at the output end of the first motor 18 is connected to the second pulley at the bottom of the first screw mandrel 16 by a first belt 38, and the screw at the top of the first screw mandrel 16 is Connect and pass through the Z-axis servo lifting platform 17 and then connect to the bearing seat 37 on the support plate 9;

First guide rails 15 are fixed on both sides of the left end of the support plate 9 , and the Z-axis servo lifting platform 17 is slidably connected to the first guide rails 15 .

Both sides of the upper end of the base plate 19 are fixed with second guide rails 21, and the bottom of the X-axis servo displacement platform 23 is slidably connected to the second guide rails 21, and the middle part of the upper end of the base plate 19 is provided with a first drive box 31 and a second motor 29 ;

The third pulley at the output end of the second motor 29 is connected to the fourth pulley at the end of the second screw mandrel by a second belt, the second screw mandrel is arranged inside the first drive box 31, and the second screw mandrel is driven by a first drive Block 30, the two sides of the first driving block 30 protrude through the opening slot reserved on the side of the first driving box 31 and then fixedly connected to the bottom of the X-axis servo displacement platform 23;

A protective cover 22 is provided on the outside of the third pulley, the second belt and the fourth pulley.

A third guide rail 13 is fixed on both sides of the upper end of the X-axis servo displacement platform 23, and the bottom of the Y-axis servo displacement platform 24 is slidingly connected to the third guide rail 13;

The middle part of the upper end of the X-axis servo displacement platform 23 is equipped with a third motor 20 and a second drive box 27, the output end of the third motor 20 is connected to the third lead screw inside the second drive box 27, and the third lead screw drives There is a second drive block 28, and the two sides of the second drive block 28 protrude through the opening slot reserved on the side of the second drive box 27 and are fixedly connected to the bottom of the Y-axis servo displacement platform 24 .

A galvanometer welding module 26 and a mounting plate 34 are installed on the upper end of the Y-axis servo displacement platform 24, a CCD synchronous detection module 32 is provided on both sides of the galvanometer welding module 26, and a laser beam is installed in the middle of the front end of the mounting plate 34. Claw mechanism 33;

The top of the mounting plate 34 is provided with a dust suction cover 25, the dust suction cover 25 is connected to the dust suction port of the dust suction device 3 through a hose 7, and the both sides of the mounting plate 34 are also equipped with nozzles 36, the nozzles 36 is connected to the water outlet of the water cooling device 2 through a water pipe;

The upper part of the double-speed chain transmission line 4 is equipped with a carrier positioning and rotating mechanism 11 through a bracket 10. The carrier positioning and rotating mechanism 11 includes a cylinder 111 above the bracket 10, a rotating cylinder 114 connected to the bottom of the piston rod 110 of the cylinder 111 and a rotating The clamping head 115 connected to the output end of the cylinder 114, the laser 6 and the industrial computer 12 are installed on the side of the upper end of the support 10 .

The lithium battery pack 8 is placed on the tray 14 on the upper double-speed chain conveying line 4 and the lower double-speed chain conveying line 5 .

The cylinder 111 is fixed on the middle part of the upper end of the cylinder fixing plate 112, and the polished rods 113 connected at the four corners of the lower end of the cylinder fixing plate 112 run through the top of the support 10 and are connected with a lifting plate, and the rotating cylinder 114 is installed in the middle of the lower end of the lifting plate , the bottom of the piston rod 110 passes through the top of the support 10 and is connected to the middle part of the upper end of the lifting plate.

The laser claw pressing mechanism 33 includes an insulating seat 331 fixed in the middle of the front end of the mounting plate 34 and four groups of pressing claws 332 arranged at equal intervals up and down on the front end of the insulating seat 331. Guide shafts are provided on both sides of the front end of the insulating seat 331. 333, and both ends of the pressing jaw 332 are sleeved on the corresponding guide shaft 333.

Specifically, when in use, the industrial computer 12 is used to control the water cooling device 2, the dust collection device 3, the upper double-speed chain conveyor line 4, the lower double-speed chain conveyor line 5, the laser 6, the vibrating mirror welding module 26, the CCD synchronous detection module 32, The work of the cylinder 111, the rotary cylinder 114, the first motor 18, the second motor 29 and the third motor 20;

The lithium battery pack 8 is placed on the pallet 14 on the upper double-speed chain conveying line 4, so that the upper double-speed chain conveying line 4 transports the lithium battery pack 8 on the pallet 14 to the welding cabinet 1, and then, the first motor 18, the second The motor 29 and the third motor 20 work separately to drive the Z-axis servo lifting platform 17 to move up and down in the Z-axis direction, the X-axis servo displacement platform 23 to move in the X-axis direction, and the Y-axis servo displacement platform 24 to move in the Y-axis direction. direction, so that the pressing claw 332 of the laser claw pressing mechanism 33 is facing the tab of the lithium battery pack 8, and the tab and the cell are pressed together;

At this time, the laser 6 emits laser light, so that the laser beam passes through the vibrating mirror welding module 26 to weld the tabs and the batteries of the lithium battery pack 8, and the CCD synchronous detection module 32 is used to detect the quality of the solder joints in real time;

After the single-sided welding of the batteries of the lithium battery pack 8 is completed, the piston rod 110 of the cylinder 111 is stretched out, so that the rotating cylinder 114 moves down until the clamping head 115 contacts the top of the lithium battery pack 8, and the clamping head 115 will The lithium battery pack 8 is clamped, and then the piston rod 110 of the cylinder 111 is retracted, and the rotating cylinder 114 clamps the lithium battery pack 8 through the clamping head 115, and completes the rotation transposition of the lithium battery pack 8;

Then, the piston rod 110 of the cylinder 111 stretches out, so that the rotating cylinder 114 moves down until the bottom of the lithium battery pack 8 contacts the tray 14, and the clamping head 115 no longer clamps the lithium battery pack 8, finally making the lithium battery pack 8 Reposition on tray 14;

At this point, the laser 6 emits laser light again, so that the laser passes through the vibrating mirror welding module 26 to weld the tab on the other side and the battery cell of the lithium battery pack 8, and the CCD synchronous detection module 32 is used to detect the quality of the solder joints in real time.

There are 4 groups of pressing jaws 332, which are determined by the laser range. The laser pressing jaw mechanism 33 is driven by YZ two-axis.

While welding, the dust suction device 3 works to absorb the fume generated by welding, and at the same time, the water cooling device 2 sprays water through the nozzle 36 to cool down the high temperature generated by welding.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (7)

1. A welding equipment for tabs of high-power lithium battery packs, comprising a welding case (1), a water cooling device (2) and a dust collection device (3), characterized in that: the inner right side of the welding case (1) The upper double-speed chain conveyor line (4) and the lower double-speed chain conveyor line (5) for conveying the lithium battery pack (8) are arranged on the side; The inner left side of the welding machine box (1) is provided with a support drive assembly, which includes a support plate (9), a Z-axis servo lifting platform (17) slidingly connected to the left end of the support plate (9), a Z-axis servo The base plate (19) on the upper end of the lifting platform (17), the X-axis servo displacement platform (23) that is slidingly connected to the upper end of the base plate (19), and the Y-axis servo displacement platform (24) that is slidingly connected to the upper end of the X-axis servo displacement platform (23); The upper end of the Y-axis servo displacement platform (24) is equipped with a vibrating mirror welding module (26) and a mounting plate (34), and both sides of the vibrating mirror welding module (26) are provided with a CCD synchronous detection module (32). The middle part of the front end of the mounting plate (34) is equipped with a laser claw pressing mechanism (33); The top of the mounting plate (34) is provided with a dust suction cover (25), and the dust suction cover (25) is connected to the dust suction port of the dust suction device (3) through a hose (7), and the mounting plate (34) Both sides of the shower head (36) are also installed, and the shower head (36) is connected with the water outlet of the water cooling device (2) by a water pipe; The top of the double-speed chain conveying line (4) is equipped with a carrier positioning and rotating mechanism (11) by a support (10), and the carrier positioning and rotating mechanism (11) includes a cylinder (111) above the support (10), a cylinder ( 111) the rotary cylinder (114) connected to the bottom of the piston rod (110) and the clamping head (115) connected to the output end of the rotary cylinder (114), the upper side of the bracket (10) is equipped with a laser (6) and industrial control machine (12). 2. A high-power lithium battery pack tab welding device according to claim 1, characterized in that: a first motor (18) is installed at the bottom of the left end of the support plate (9), and the first motor (18) ) the first pulley at the output end is connected to the second pulley at the bottom of the first screw mandrel (16) through the first belt (38); The back is connected to the bearing seat (37) on the support plate (9); First guide rails (15) are fixed on both sides of the left end of the support plate (9), and the Z-axis servo lifting platform (17) is slidably connected to the first guide rails (15). 3. A kind of high-power lithium battery pack tab welding equipment according to claim 1, characterized in that: the two sides of the upper end of the bottom plate (19) are fixed with second guide rails (21), and the X-axis servo The bottom of the displacement platform (23) is slidingly connected to the second guide rail (21), and the upper middle part of the bottom plate (19) is provided with a first drive box (31) and a second motor (29); The third pulley at the output end of the second motor (29) is connected to the fourth pulley at the end of the second screw mandrel by a second belt, the second screw mandrel is arranged inside the first drive box (31), and the second screw mandrel drives There is a first driving block (30), and the two sides of the first driving block (30) protrude through the opening slot reserved on the side of the first driving box (31) and then fixedly connected to the bottom of the X-axis servo displacement platform (23) ; A protective cover (22) is provided on the outside of the third pulley, the second belt and the fourth pulley. 4. A high-power lithium battery pack tab welding device according to claim 1, characterized in that: the X-axis servo displacement platform (23) is fixed with a third guide rail (13) on both sides of the upper end, The bottom of the Y-axis servo displacement platform (24) is slidably connected to the third guide rail (13); A third motor (20) and a second drive box (27) are installed in the middle of the upper end of the X-axis servo displacement platform (23), and the output end of the third motor (20) is connected to the first drive box (27) inside the second drive box (27). Three screw mandrels, and the third screw mandrel is driven with a second driving block (28), and the two sides of the second driving block (28) stretch out through the open slot reserved on the side of the second driving box (27) and are fixedly connected to the The bottom of the Y-axis servo displacement platform (24) bottom. 5. A high-power lithium battery pack tab welding device according to claim 1, characterized in that: the lithium battery pack (8) is placed on the upper double-speed chain conveyor line (4) and the lower double-speed chain conveyor on the pallet (14) on the line (5). 6. A kind of welding equipment applied to tabs of high-power lithium battery packs according to claim 1, characterized in that: the cylinder (111) is fixed on the middle part of the upper end of the cylinder fixing plate (112), and the cylinder fixing plate ( 112) The polished rods (113) connected at the four corners of the lower end run through the top of the bracket (10) and are connected with a lifting plate, and the rotating cylinder (114) is installed in the middle of the lower end of the lifting plate, and the bottom of the piston rod (110) runs through the bracket (10) The top is connected to the middle part of the upper end of the lifting plate. 7. The tab welding equipment applied to high-power lithium battery packs according to claim 1, characterized in that: the laser claw pressing mechanism (33) includes an insulating seat ( 331) and four sets of pressing claws (332) arranged at equal intervals up and down on the front end of the insulating seat (331), guide shafts (333) are arranged on both sides of the front end of the insulating seat (331), and two pressing claws (332) The ends are sleeved on the corresponding guide shafts (333).

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