CN116936946A

CN116936946A - Device for cutting tab lamination by laser based on fixed cutting and control method thereof

Info

Publication number: CN116936946A
Application number: CN202310671867.9A
Authority: CN
Inventors: 林巨广; 秦洁; 张�杰; 徐川川; 夏善伟
Original assignee: Anhui Juyi Technology Co Ltd
Current assignee: Anhui Juyi Technology Co Ltd
Priority date: 2023-06-06
Filing date: 2023-06-06
Publication date: 2023-10-24

Abstract

The invention relates to the technical field of battery core sheet making and discloses equipment for cutting tab laminates based on fixed cutting and a control method thereof. According to the invention, the positive plate unreeling device and the negative plate unreeling device are used for carrying out stepping conveying on a material belt of the positive plate and the negative plate respectively, the laser tab cutting device is used for cutting tabs on the material belt by laser, the V angle cutting device is used for cutting V angles on the material belt, the main driving cutting device is used for cutting along the tip of the V angles to form the positive plate and the negative plate, and the positive plate and the negative plate are conveyed onto the lamination device along the vacuum conveying belt; the mode of cutting the tab by laser is adopted, the consistency of burrs is effectively controlled, the quality of the battery cell is further improved, meanwhile, the main drive cutting device and the lamination device are transported by a vacuum conveying belt, and the pollution of dust to the tab is reduced.

Description

Device for cutting tab lamination by laser based on fixed cutting and control method thereof

Technical Field

The invention relates to the technical field of battery core sheet making, in particular to equipment for cutting tab lamination by laser based on fixed cutting and a control method thereof.

Background

In the production process of the lithium battery, the pole piece cutting and the pole piece lamination are two very important production procedures, and all the processing procedures are required to be completed by adopting corresponding cutting and lamination equipment. The current main stream battery manufacturer mainly cuts and divides the tab and the pole coil of the previous process of 'coil stock' to prepare the pole piece for feeding the lamination cartridge clip or the coil stock for cutting the pole piece.

The current mainstream pole piece cutting equipment has a hardware mould cross cutting machine. The hardware die cutting machine has the advantages of low one-time investment, but has many defects, mainly low effective rate, high later maintenance cost and long die changing time each time. In addition, the mode of hardware mould cross cutting utmost point ear can lead to pole piece edge burr too big, increases the risk of electric core short circuit, and on the other hand direct blank can lead to the dust too big, and the pole piece falls the material seriously, and the dust that the blank produced probably falls into pole piece or diaphragm surface, greatly increases the short circuit rate, seriously influences electric core security.

In addition, the pole piece lamination process is carried out after the pole piece is cut, and the pole piece lamination process is carried out, wherein the pole piece lamination process is a traditional cartridge clip feeding lamination process or a multi-station Z-shaped lamination process for comparing heat in recent years, and has the steps of pole piece transferring, and the risks of secondary damage and dust contamination in the pole piece transferring process are both existed in the pole piece carrying process; meanwhile, a large amount of manpower and material resources are often required in the carrying process, so that the production efficiency is low.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the quality of a battery cell is affected by pole piece cutting and secondary damage exists in pole piece transferring, and provides equipment for cutting pole ear lamination based on fixed cutting and a control method thereof.

According to the technical scheme, the equipment for cutting the tab lamination based on the constant cutting laser and the control method thereof provided by the invention are characterized in that the positive plate unreeling device and the negative plate unreeling device are used for respectively carrying out stepping conveying on a material belt of the positive plate and the negative plate, the tab cutting device is used for cutting the tab on the material belt by laser, the V angle cutting device is used for cutting the V angle on the material belt, the main driving cutting device is used for cutting the tip of the V angle to form the positive plate and the negative plate, the positive plate and the negative plate are conveyed to the lamination device along the vacuum conveying belt, and the lamination device is matched with a diaphragm to carry out lamination to form an electric core, finally, the electric core is rubberized by the rubberizing device, the electric core is tested on the test device, and the test is qualified and enters the next procedure along the blanking device in a descending way; the method has the advantages that the mode of cutting the tabs by laser is adopted, the consistency of burrs is effectively controlled, the quality of the battery cell is further improved, meanwhile, the main drive cutting device and the lamination device are transported by a vacuum conveying belt, the pollution of dust to the tabs is reduced, the secondary damage of the tabs is avoided, and the quality of the battery cell is improved; in addition, the device is highly integrated, so that the process of transferring the pole piece or the battery cell is effectively reduced, and the production efficiency and the intellectualization of the battery cell are improved.

Drawings

FIG. 1 is a schematic top view of an apparatus according to one embodiment of the invention;

FIG. 2 is a schematic side view of an apparatus according to one embodiment of the invention;

fig. 3 is a schematic view of the structure of the positive electrode sheet unreeling device or the negative electrode sheet unreeling device in the apparatus according to one embodiment of the present invention;

FIG. 4 is a schematic view of the structure of an automatic taping assembly in an apparatus according to one embodiment of the present invention;

FIG. 5 is a schematic structural view of a manual taping assembly in an apparatus according to one embodiment of the present invention;

FIG. 6 is a schematic structural view of a blade dust removal assembly in an apparatus according to one embodiment of the invention;

FIG. 7 is a schematic structural view of a tab indentation assembly in an apparatus according to one embodiment of the present invention;

FIG. 8 is a schematic structural view of a tension control assembly in an apparatus according to one embodiment of the present invention;

FIG. 9 is a schematic structural view of a tension control assembly in an apparatus according to one embodiment of the present invention;

FIG. 10 is a schematic illustration of the structure of a serpentine deskew assembly in an apparatus according to one embodiment of the invention;

FIG. 11 is a schematic diagram of the construction of a buffer roller assembly in an apparatus according to one embodiment of the present invention;

FIG. 12 is a schematic view of the structure of a laser tab cutting device in an apparatus according to one embodiment of the invention;

FIG. 13 is a cross-sectional view according to A-A of FIG. 12;

FIG. 14 is a side view of a laser tab cutting device in an apparatus according to one embodiment of the invention;

FIG. 15 is a schematic view of the structure of the V-angle cutting device in the apparatus according to one embodiment of the present invention;

FIG. 16 is a cross-sectional view according to B-B in FIG. 15;

FIG. 17 is a top view of a cut-to-V angle device in an apparatus according to one embodiment of the invention;

FIG. 18 is a schematic diagram of a master cutting apparatus in an apparatus according to one embodiment of the present invention;

FIG. 19 is a cross-sectional view according to C-C in FIG. 18;

FIG. 20 is a schematic view of the structure of a vacuum conveyor belt in an apparatus according to one embodiment of the present invention;

FIG. 21 is a schematic structural view of a lamination assembly in an apparatus according to one embodiment of the invention;

FIG. 22 is a schematic structural view of a lamination assembly in an apparatus according to one embodiment of the invention;

FIG. 23 is a schematic structural view of a rubberizing device in an apparatus according to one embodiment of the invention;

FIG. 24 is a schematic structural view of a rubberizing device in an apparatus according to one embodiment of the invention;

FIG. 25 is a schematic view of a thermal compression testing apparatus in an apparatus according to an embodiment of the present invention;

FIG. 26 is an enlarged schematic view according to region D of FIG. 25;

FIG. 27 is a schematic view showing the structure of a blanking device in an apparatus according to an embodiment of the present invention;

FIG. 28 is a schematic view of the structure of a blanking device in an apparatus according to an embodiment of the present invention;

fig. 29 is a flowchart of a control method of the apparatus according to an embodiment of the present invention.

Detailed Description

The following describes the detailed implementation of the embodiments of the present invention with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.

FIG. 1 is a schematic top view of an apparatus according to one embodiment of the invention; fig. 2 is a schematic side view of an apparatus according to an embodiment of the invention. In fig. 1 and 2, the apparatus may include an unreeling device 3, a laser tab cutting device 4, a V-angle cutting device 5, a main driving cutting device 6, a lamination device 8, a vacuum conveying belt 7, a rubberizing device 9, a hot pressing testing device 10, and a blanking device 11. Specifically, the unreeling device 3 may include a positive electrode sheet unreeling device 1 and a negative electrode sheet unreeling device 2.

The positive plate unreeling device 1 and the negative plate unreeling device 2 are arranged in parallel and have the same structure and are used for stepping the conveying belt 35. The laser tab cutting device 4 is arranged at the output end of the unreeling device 3 and is used for cutting out tabs on the material belt 35. The V-angle cutting device 5 is disposed at the output end of the laser tab cutting device 4 and is used for cutting a V-angle on the material strip 35. The main driving cutting device 6 is arranged at the output end of the V-angle cutting device 5 and is used for cutting at the V-angle to form a positive plate or a negative plate. Lamination device 8 is used for laminating positive plate and negative plate to form the electric core. The vacuum conveying belt 7 is arranged between the main drive cutting device 6 and the lamination device 8 and is used for conveying the positive electrode plate or the negative electrode plate to the lamination device 8 for lamination. The rubberizing device 9 is arranged at the output end of the lamination device 8 and is used for rubberizing the battery cells. The hot pressing testing device 10 is arranged at the output end of the rubberizing device 9 and is used for hot pressing and testing the battery cells. The blanking device 11 is arranged at the output end of the testing device 10 and is used for blanking the qualified battery cells.

In the process of manufacturing the battery cell, the coiled materials of the positive and negative electrode plates are required to be respectively placed on the positive electrode plate unreeling device 1 and the negative electrode plate unreeling device 2, and specifically, the coiled materials are continuous. The positive plate unreeling device 1 and the negative plate unreeling device 2 respectively convert corresponding coiled materials into material belts 35 to be conveyed to the laser tab cutting device 4 in a stepping mode. The tab cutting device 4 cuts the tab by laser to cut out tabs of the positive plate and the negative plate. The V-angle cutting device 5 continues to cut the V-angle of the material strip 35 after the tab is cut, and then the main drive cutting device 6 cuts along the tip/included angle of the V-angle to form a positive plate and a negative plate. The vacuum conveying belt 7 conveys the positive electrode plate and the negative electrode plate to the lamination device 8, and the lamination device 8 carries out Z-shaped lamination on the positive electrode plate and the negative electrode plate through the diaphragm so as to form the battery cell. Finally, rubberizing is carried out on the battery cell through the rubberizing device 9, the battery cell subjected to rubberizing is subjected to hot pressing and testing through the testing device 10, and after the battery cell is tested to be qualified, the battery cell can enter a subsequent process through the blanking device 11.

In the production process of the traditional lithium battery cell, pole piece cutting and pole piece lamination are needed, equipment for the main flow of pole piece cutting is a hardware die cutting machine, but the equipment can cause excessive burrs at the edge of the pole piece, the risk of short circuit of the cell is increased, dust is excessive during material cutting, pole piece material dropping is serious, the pole piece is easy to drop into the surface of a pole piece or a diaphragm, and the safety of the cell is seriously affected. In addition, the existing pole piece has the process of transferring the pole piece in the lamination process, the risks of secondary damage and dust contamination exist, and a great deal of manpower and material resources are required to be consumed in the conveying process, so that the production efficiency is low. In the embodiment of the invention, the mode of cutting the tab by the laser tab cutting device 4 is adopted, so that the consistency of burrs can be effectively controlled; the positive plate and the negative plate are conveyed by the vacuum conveying belt 7, so that the positive plate and the negative plate are prevented from being contacted with the outside, namely, pollution of dust to the plates in the transferring process is reduced, and secondary damage to the plates is avoided; in addition, the vacuum conveying belt 7 does not need to consume a large amount of manpower and material resources, complicated transportation is not needed, the equipment is highly integrated, continuity between working procedures is good, and the efficiency of cell production is greatly improved.

In this embodiment of the present invention, the rear end device of the positive electrode sheet unreeling device 1 is the same as the rear end device of the negative electrode sheet unreeling device 2, and is provided with a laser tab cutting device 4 for cutting tabs on the material belt 35 by laser, a V angle cutting device 5 for cutting V angles on the material belt 35, a main drive cutting device 6 for cutting pole pieces, and a vacuum conveying belt 7 for transportation.

In this embodiment of the invention, the apparatus is provided with three sets of lamination means, taking into account the efficiency of the pole piece lamination. As shown in fig. 1 and 2, three sets of lamination devices are distributed along the extending direction of the vacuum conveying belt 7, that is, the three sets of lamination devices synchronously laminate the pole pieces on the vacuum conveying belt 7, so as to cooperate with the conveying efficiency of the vacuum conveying belt 7 to the pole pieces, and maintain the production beat.

In this embodiment of the present invention, as shown in fig. 3 to 11, the positive electrode sheet unreeling device 1 or the negative electrode unreeling device 2 may include an unreeling seat 12, two sets of first air inflation shafts 13, two sets of automatic pole reel up-down devices 14, two sets of broken tape detection sensors 25, an automatic tape splicing assembly 16, a manual tape splicing assembly 17, an air knife dust removing assembly 18, a tab indentation assembly 19, a tension control assembly 20, a color mark sensor 22, a serpentine correction assembly 23, and a buffer roller assembly 24. Specifically, the automatic taping assembly 16 may include two sets of tape seats 31, two sets of backup tape reels 26, two sets of suction tables 29, a cutter 30, two sets of rubberizing tables 27, two sets of rotary air cylinders 32, and two sets of pushing air cylinders 28; the manual splicing assembly 17 may include a plurality of first platens 33 and a pneumatic assembly 34; the air knife dust removing assembly 18 can comprise a dust removing base 37, two groups of air knives 36, two groups of dust collecting openings and two groups of dust collecting pipes 38; the tab indentation assembly 19 may include an indentation seat 40, a first roller shaft 42, a guide rail 43, a connection seat 15, a stiffener cylinder 39, an indentation roller 41, and a pole piece edge detector; the tension control assembly 20 may include a detection block 47, a second roller 45, two sets of tension detection sensors 46, a tension block 21, a tension dancer 48, a low friction cylinder, and an electrical proportional valve; the serpentine correction assembly 23 may include a correction controller 49, a correction guide assembly 51, two sets of tertiary rollers 50, and a correction sensor; the buffer roller assembly 24 may include an up-and-down moving module 52, a fourth roller 53, and two sets of fifth rollers 54.

Two sets of first air expansion shafts 13 are arranged on the unreeling seat 12, and two sets of automatic pole roll up-down devices 14 are arranged below the corresponding first air expansion shafts 13 and are used for being matched with an AGV trolley to install pole rolls on the first air expansion shafts 13 in place. The two groups of belt breakage detection sensors 25 are respectively arranged above the two groups of inflatable shafts 13 and are used for detecting the in-place state of the corresponding pole rolls; the automatic tape splicing assembly 16 is arranged on the unreeling seat 12 and is positioned above the space between the two groups of first air expansion shafts 13. The two sets of tape holders 31 are symmetrically arranged, and the material tape 35 of the pole roll passes through between the two sets of tape holders 31. The two groups of standby material belt reels 26 are respectively arranged above the two groups of belt seats 31, and the two groups of adsorption tables 29 are respectively arranged at the opposite ends of the two groups of belt seats 31; the cutter 30 is movably penetrated through one group of adsorption tables 29. The two groups of rubberizing tables 27 are respectively and vertically connected with the two groups of adsorption tables 29; the two groups of rotary air cylinders 32 are symmetrically arranged on the two groups of belt seats 31, and the output ends of the rotary air cylinders 32 are connected with the corresponding rubberizing tables 27. The two groups of pushing cylinders 28 are respectively arranged at the mutually far ends of the two groups of rotating cylinders 32, and the output ends of the pushing cylinders 28 are connected with the corresponding rotating cylinders 32. The manual tape splicing assembly 17 is disposed at the rear end of the automatic tape splicing assembly 16, and the plurality of first pressing plates 33 are parallel to each other and perpendicular to the extending direction of the material tape 35. The pneumatic assembly 34 is connected to both ends of the first pressing plate 33, and is used for driving the first pressing plate 33 to lift so as to loosen or compress the material belt 35. The air knife dust removal assembly 18 is disposed at the rear end of the manual interface assembly 17 for cleaning dust from the material strip 35. The dust removal base 37 is arranged on the unreeling seat 12; the two sets of air knives 36 are oppositely arranged on the dust removal base 37, and the material belt 35 penetrates through the two sets of air knives 36. The two groups of dust collection openings are respectively arranged on the opposite sides of the two groups of air knives 36; two sets of dust collection pipes 38 are respectively connected with the two sets of air knives 36. The tab indentation assembly 19 is disposed at the rear end of the air knife dust removing assembly 18, and is used for pressing tab indentations on the material belt 35. The indentation seat 40 is disposed on the unreeling seat 12, and two ends of the first roller shaft 42 are rotatably connected with the indentation seat 40. The two ends of the ball screw are rotatably connected with the indentation seat 40 positioned above, and one end of the ball screw passes through the indentation seat 40 and is fixedly connected with the adjusting plate 44. The guide rail 43 is provided on the indentation seat 40, and the connection seat 15 is slidably connected with the guide rail 43 and is connected with a nut of the ball screw. The reinforcing rib cylinder 39 is arranged on the connecting seat 15, and the indentation roller 41 is connected with the output end of the reinforcing rib cylinder 39; the pole piece edge detector is arranged on the connecting seat 15 and is used for detecting the edge of the material belt 35. The tension control assembly 20 is arranged at the rear end of the tab indentation assembly 19 and is used for monitoring and controlling the tension of the material belt 35. The detection seat 47 is arranged on the unreeling seat 12, two ends of the second roll shaft 45 are rotatably connected with the detection seat 47, and two groups of tension detection sensors 46 are respectively arranged at two ends of the second roll shaft 45. The tension seat 21 is arranged at the rear end of the detection seat 47, and two ends of the tension floating roller 48 are rotatably connected with the tension seat 21. The low friction air cylinder is connected with the end of the tension floating roller 48; the electric proportional valve is connected with the low-friction air cylinder and is used for adjusting the tension of the material belt 35 in a matched mode with the low-friction air cylinder and the tension floating roller 48. The color scale sensor 22 is disposed at a side of the material tape 35, and is used for detecting and identifying the material tape 35 attached with the reject adhesive tape on the material tape 35. A serpentine correction assembly 23 is provided at the rear end of the tension control assembly 20 for defining the edge flush of the strip 35. The deviation rectifying controller 49 is arranged on the unreeling seat 12, and the deviation rectifying guiding component 51 is arranged on the deviation rectifying controller 49 and used for guiding the material belt 35. The two sets of third roll shafts 50 are arranged on the deviation rectifying guide assembly 51 in parallel, and the deviation rectifying sensor is arranged on the deviation rectifying controller 49. The buffer roller assembly 24 is disposed at the rear end of the serpentine correction assembly 23. The up-down moving module 52 is disposed on the unreeling seat 12, and the output end of the up-down moving module 52 faces downward. The fourth roll shaft 53 is disposed at the output end of the up-down moving module 52, and two sets of fifth roll shafts 54 are symmetrically disposed at two sides of the up-down moving module 52.

When the electrode rolls of the positive and negative electrode plates are required to be mounted, the AGV trolley conveys the electrode rolls to the vicinity of the two groups of first expansion shafts 13, and the electrode rolls are mounted on the first expansion shafts 13. Simultaneously, the automatic up-down device 14 of the two groups of pole rolls is started to be matched with the pole rolls to be mounted at the preset position of the first air expansion shaft 13. Specifically, the automatic pole coil loading and unloading device 14 includes, but is not limited to, a mode that a cylinder and a push plate are matched to push a pole coil, and the like. After the pole coil is mounted at a preset position, the pole coil is detected by the broken belt detection sensor 25, and then the belt splicing operation can be performed; the tape breakage detection sensor 25 may detect whether the pole roll is about to be used up or not. During the first threading, the material belt 35 is manually threaded along the tape running chart shown in fig. 3, and during the manual threading, the driving pneumatic assembly 34 is started to drive the plurality of first pressing plates 33 to press down to press the material belt 35, so that the position, the tension and the like of the material belt 35 at the rear end of the manual tape splicing assembly 17 can be adjusted. After the adjustment is completed, the pneumatic assembly 34 is driven to release the plurality of platens 33 to unwind the blanking belt 35. In particular, the specific structure of the pneumatic assembly 34 may include, but is not limited to, a cylinder or the like as known to those skilled in the art. Specifically, the unreeling device may further include a servo motor connected to the first air shaft 13, so that the servo motor can drive the pole roll to be automatically unreeled after the threading is completed. The material belt 35 passes between the two groups of air knives 36, and dust and the like on the surface of the material belt 35 are sucked by a suction assembly known by the person skilled in the art along the two groups of dust collection openings and the two groups of dust collection pipes 38 to realize dust collection, so that the quality of the material belt 35 is ensured. Thereafter, the strip 35 passes over the first roller 42, the edge of the strip 35 is detected by the pole piece edge detector, and the stiffener cylinder 39 is activated to drive the creasing roller 41 closer to and in contact with the strip 35 to force the stiffener of the tab trace at the edge of the strip 35. Specifically, in order to adapt to the material strips 35 with different widths, according to the result of the pole piece edge detector, the adjusting plate 44 can be manually rotated to drive the connecting seat 15 to slide along the guide rail 43, so that the pole lug indentation is more accurate and convenient to adjust. In the process of conveying the material belt 35, the tension detection sensor 46 detects the tension of the material belt, and when the tension of the material belt 35 is too large or too small, the electric proportional valve is adaptively adjusted and matched with the low-friction air cylinder to adjust the tension of the material belt 35, so that the conveying of the material belt 35 is more stable and reliable. Specifically, the tension control range is 0-50N, the tension adjustment precision is +/-1N, and the tension fluctuation is less than or equal to +/-10%. The color scale sensor 22 can identify and detect the unqualified adhesive tape attached to the material tape 35 in the production process, and the unqualified adhesive tape is discharged from the unqualified rejecting station after being cut into pole pieces, and if the adhesive tape is just at the cutting position, the cutting of the position is skipped. In order to ensure that the material belt 35 always passes along the preset position in the running process, the material belt 35 is prevented from having a serpentine phenomenon or uneven edges, the position of the material belt 35 can be identified by the deviation correcting sensor, and the deviation correcting controller 49 is used for controlling the starting of the deviation correcting guiding assembly 51 so as to guide the running of the material belt 35. In particular, for the specific construction of the deviation correcting guide assembly 51, it is possible to provide the guide frame with guide blocks in a manner known to those skilled in the art that the electric driver is engaged with the guide frame. When the tension of the material belt 35 is too high or too low, the up-and-down movement module 52 can be driven to start, so as to drive the fourth roller shaft 53 to move up and down. Specifically, when the tension is excessive, the fourth roller shaft 53 is driven to move upward; when the tension is too small, the fourth roller shaft 53 is driven to move downward. In addition, the fourth roller shaft 53 is driven to move up and down to buffer and store the material belt 35, and the width of one pole piece is stored to match with the cutting of the subsequent pole piece; that is, when the buffer roller assembly 24 guarantees the continuous unreeling process of the pole rolls, the follow-up pole piece can also be cut intermittently, and meanwhile, the tension and the beat can be stabilized, so that the production efficiency is improved.

In this embodiment of the present invention, specific structures for the up-down movement module 52 include, but are not limited to, air cylinders, ball screws, etc. as known to those skilled in the art.

In this embodiment of the present invention, as shown in fig. 3, the first air shaft 13 is provided with two sets, i.e. two sets of pole rolls are installed at the same time, one of the sets of pole rolls is used as a backup, and the end of the backup pole roll passes through the two sets of tape holders 31 and is wound on the material tape reel 26. When one of the pole rolls is about to run out, the pushing cylinder 28 is driven to start to push the cutter 30 to cut the two groups of material belts 35, so that the two groups of material belts 35 are divided into four sections, and meanwhile, the adsorption table 29 on one side adsorbs the part, close to the manual tape splicing assembly 17, of the material belt 35 corresponding to one of the pole rolls and the part, close to the first air expansion shaft 13, of the material belt 35 corresponding to the standby pole roll. The rotary cylinder 32 on the other side is started to drive the rubberizing platform 27 to rotate to be opposite to the adsorption platform 29 on one side, and rubberizing is carried out on the gap between the two groups of material belts 35 on the adsorption platform 29 so as to realize the purpose of automatic tape splicing. By adopting the mode of arranging two groups of pole rolls, the waiting time of the strip breakage of the material strip 35 can be reduced, so that the pole piece cutting efficiency is further improved.

In this embodiment of the present invention, as shown in fig. 12 to 14, the laser tab cutting device may include a first base 55, a first moving module 56, a second moving module 57, a first mold-in roller assembly 58, a first mold-out roller assembly 63, a third moving module 61, a fourth moving module 62, a fifth moving module 60, a laser 59, a pressing cylinder, a second pressing plate 65, and a vacuum cleaner assembly 66.

The first moving module 56 is disposed on the first base 55, and the second moving module 57 is disposed on the first moving module 56 and is vertically distributed with the first moving module 56. The first mold-entering carrier roller assembly 58 is disposed on the second moving module 57 and is used for supporting the material belt 35, and the first mold-exiting carrier roller assembly 63 is disposed parallel to the first mold-entering carrier roller assembly 58. The third moving module 61 is disposed above the first base 55, and the fourth moving module 62 is disposed on the third moving module 61 and is vertically distributed with the third moving module 61. The fifth moving module 60 is disposed on the fourth moving module 62, and the fifth moving module 60 is perpendicular to both the third moving module 61 and the fourth moving module 62. The laser 59 is disposed on the fifth moving module 60 for cutting the tab of the tape 35. The compaction cylinder is arranged on the second movable module 57, the second pressing plate 65 is arranged at the output end of the compaction cylinder, and the lug profiling supporting plate 64 is arranged below the second pressing plate 65 and is used for being matched with the second pressing plate 65 to compact the material belt 35. The vacuum dust removal assembly 66 is disposed between the first mold entering idler assembly 58 and the first mold exiting idler assembly 63 for recycling waste generated when the tab is cut by the strip 35.

The strip 35 enters under the laser 59 along the first entry idler assembly 58 and moves out under the laser 50 along the first exit idler assembly 63. When the tab cutting needs to be performed on the material belt 35, the first moving module 56 and the second moving module 57 are started to move the material belt 35 to the center of the device, the third moving module 61 and the fourth moving module 62 are driven to be started, the vibrating mirror in the laser 59 is moved to the middle of the tab cutting position of the tab profiling supporting plate 64, and the fifth moving module 60 can adjust the height of the laser 59 relative to the material belt 35. Simultaneously, the pressing cylinder is started, so that the second pressing plate 59 presses the material belt 35, and the laser 59 performs laser tab cutting on the material belt 35. Finally, the cut scrap is recovered by the vacuum assembly 66, and after the cutting is completed, the second platen 59 is released and the strip 35 is stepped by the spacing of one pole piece for the next cutting.

In this embodiment of the present invention, specific structures for the first, second, third, fourth and fifth moving modules 56, 57, 61, 62 and 60 include, but are not limited to, air cylinders, ball screws, etc. as known to those skilled in the art.

In this embodiment of the invention, the particular configuration for the first entry roller assembly 58 and the first exit roller assembly 63 includes two sets of rollers staggered up and down with the belt 35 passing between the two sets of rollers.

In this embodiment of the invention, specific configurations for the vacuum assembly 66 include, but are not limited to, the manner in which the vacuum suction device and suction line cooperate, and the like.

In this embodiment of the present invention, as shown in fig. 15 to 17, the V-angle cutting device 5 may include a second base 70, a second mold-in carrier roller assembly 74, a second mold-out carrier roller assembly 69, two sets of V-angle cutting assemblies, two sets of sixth moving die sets 71, and a seventh moving die set 72. Specifically, the V-angle cutting assembly may include a cutting frame 68, a first cutting die 75, a waste pipe 73, and a first cutting driving assembly 67.

A second entry idler assembly 74 is disposed on the second base 70, and a second exit idler assembly 69 is disposed parallel to the second entry idler assembly 74. The two sets of V-angle cutting assemblies are disposed between the second entry idler assembly 74 and the second exit idler assembly 69 and are symmetrical about the direction of extension of the strip 35. The first cutting die 75 is arranged in the cutting frame 68, the first cutting driving assembly 67 is arranged on the cutting frame 68, and the output end of the first cutting driving assembly 67 is connected with the first cutting die 75 and used for driving the first cutting die 75 to cut the V angle on the material belt 35. The waste discharge pipe 73 is fixedly penetrated through the second base 70 and the cutting frame 68 and is communicated with the inner bottom of the cutting frame 68; the two sets of cutting frames 68 are respectively connected to the two sets of sixth moving modules 71. The seventh moving module 72 is disposed on top of the second base 70, and two sets of sixth moving modules 71 are disposed on the seventh moving module 72.

The strip 35 enters the two sets of V-angle trim assemblies along the second entry roller assembly 74 and exits the two sets of V-angle trim assemblies along the second exit roller assembly 69. When the V-angle cutting of the tape 35 is required, the first cutting driving assembly 67 is activated to drive the first cutting die 75 to approach the tape 35 to cut the V-angle on the tape 35. Since both sides of the tape 35 need to be cut at V-angles, two sets of V-angle cutting assemblies are provided. The cut waste is discharged or sucked out along the waste discharge pipe 73, so that the recovery of the waste is realized, and the cleanliness of the surface of the pole piece is ensured. The interval of two sets of cutting frame 68 can be adjusted to two sets of sixth movable module 71 to the V angle of the material area 35 of adaptation different V angle sizes cuts, and the seventh movable module 72 can adjust the position of cutting on the material area 35, in order to satisfy the cutting requirement of different width pole pieces, and the suitability is wider.

In this embodiment of the present invention, specific structures of the sixth moving module 71 and the seventh moving module 72 include, but are not limited to, a cylinder, a ball screw, and the like, which are known to those skilled in the art.

In this embodiment of the present invention, the specific structure of the first cutting drive assembly 67 may include, but is not limited to, the manner in which the servo motor drives the cam assembly to rotate, and the like, as known to those skilled in the art. In particular, the cam assembly enables intermittent equidistant cutting of the first cutting die 75 to make the cutting more accurate.

In this embodiment of the present invention, as shown in fig. 18 and 19, the main driving cutting device 6 may include a third base 76, a tab sensor 83, a main driving roller assembly, a second cutting die 79, a second cutting driving assembly 77, a pressing roller assembly, a dust removing pipe 82, and a brush assembly 84. Specifically, the main drive roller assembly may include a main drive roller 85, a main drive motor 78; the press roll assembly may include a press roll 81 and a press roll cylinder 80.

The tab finding sensor 83 is disposed on the third base 76, and is used for detecting the position of the arc angle of the tab. The main driving roller assembly is arranged on the third base 76, two ends of the main driving roller 85 are rotatably connected with the third base 76, and an output end of the main driving motor 78 is connected with one end of the main driving roller 85. The compression roller assembly is arranged above the main driving roller 85, the compression roller air cylinder 80 is arranged at the top of the third base 76, and the output end of the compression roller air cylinder 80 is connected with the compression roller 81 and used for driving the compression roller 81 to be close to or far away from the main driving roller 85. The second cutting die 79 is arranged in parallel with the press roller 81, and the second cutting driving assembly 77 is arranged on the third base 76 and connected with the top of the second cutting die 79 for driving the second cutting die 79 to cut the pole piece. The dust removing pipe 82 is disposed under the main driving roller 85, and the brush assembly 84 is disposed inside the dust removing pipe 82 and contacts the outer surface of the main driving roller 85.

When the pole piece is required to be cut along the V-shaped tip on the material belt 35, the pole lug searching sensor 83 detects and identifies the position of the pole lug, and recognizes that the rear main driving motor 85 drives the main driving roller 85 to rotate by the width of one pole piece, and the press roller cylinder 80 drives the press roller 81 to approach and press the material belt 35. The second cutting drive assembly 77 drives the second cutting die 79 to cut the V-angle on the strip 35 to form the pole piece. The brush assembly 84 is capable of cleaning dust from the outer surface of the main driving roller 85, and the dropped dust, the crushed aggregates generated during the cutting process, and the like are discharged along the dust removing pipe 82. The pole piece cutting mode is simple to operate and high in efficiency, and the influence of dust and the like on the reliability of the pole piece is reduced.

In this embodiment of the present invention, the specific structure of the second cutting drive assembly 77 may include, but is not limited to, the manner in which the servo motor drives the cam assembly to rotate, and the like, as known to those skilled in the art. In particular, the cam assembly enables intermittent equidistant cutting of the second cutting die 79 to make the cutting more accurate.

In this embodiment of the present invention, as shown in fig. 20, the vacuum conveyor belt 7 may include a first belt main driving assembly, a second belt main driving assembly, a third belt driving assembly, a fourth belt main driving assembly, and a fifth belt main driving assembly. Specifically, the first belt drive assembly may include a first belt line 87, a first belt drive assembly 86, and a first brush dust removal assembly 93; the second belt drive assembly may include a second belt line 89, a second belt drive assembly 88, and a second brush dust removal assembly 94; the third belt drive assembly may include a third belt line 90, a third belt drive assembly, and a third brush dust removal assembly 95; the fourth belt drive assembly may include a fourth belt line 91, a fourth belt drive assembly, and a fourth brush dust removal assembly 96; the fifth belt drive assembly may include a fifth belt line 92, a fifth belt drive assembly, and a fifth brush dust removal assembly 97.

One end of the first belt line 87 is disposed at an output end of the main drive cutting device 6, and the first belt driving assembly 86 is connected with the first belt line 87 and is used for driving the first belt line 87 to rotate. The first brush dust removing assembly 93 is disposed on the first belt line 87 for removing dust from the first belt line 87. The second belt owner drives the subassembly and is the setting of hanging upside down, and the one end setting of second belt line 89 is at the other end of first belt line 87, and second belt drive assembly 88 is connected with second belt line 89 for drive second belt line 89 rotates, and second brush dust removal subassembly 94 sets up on second belt line 89, is used for removing dust to second belt line 89. One end of the third belt line 90 is disposed at the other end of the second belt line 89, and the third belt driving assembly is connected with the third belt line 90 and is used for driving the third belt line 90 to rotate. The third brush dust removing assembly 95 is disposed on the third belt line 90 for removing dust from the third belt line 90. One end of the fourth belt line 91 is disposed at the other end of the third belt line 90, and the fourth belt driving assembly is connected with the fourth belt line 91 for driving the fourth belt line 91 to rotate, and the fourth brush dust removing assembly 96 is disposed on the fourth belt line 91 for removing dust from the fourth belt line 91. One end of the fifth belt line 92 is disposed at the other end of the fourth belt line 91, and a fifth belt driving assembly is connected to the fifth belt line 92 for driving the fifth belt line 92 to rotate, and a fifth brush dust removing assembly 97 is disposed on the fifth belt line 92 for removing dust from the fifth belt line 92. Specifically, the first belt line 87, the second belt line 89, the third belt line 90, the fourth belt line 91 and the fifth belt line 92 are provided with a plurality of holes, and the vacuum suction device sucks a plurality of air through the vacuum pipeline so that the pole piece is adsorbed on the belt line and moves along with the belt line.

After the pole piece is cut, the pole piece enters the first belt line 87 and is adsorbed on the first belt line, and when the pole piece moves to the tail end of the first belt line 87, the tail end of the first belt line 87 stops adsorbing, and the first section of the second belt line 89 adsorbs. Similarly, the pole pieces can be stably conveyed to the third belt line 90, the fourth belt line 91, and the fifth belt line 92. Specifically, pole pieces on the third belt line 90, the fourth belt line 91, and the fifth belt line 92 are used for the use of the three-pack lamination device, respectively. The first brush dust removal assembly 93, the second brush dust removal assembly 94, the third brush dust removal assembly 95, the fourth brush dust removal assembly 96 and the fifth brush dust removal assembly 97 can remove dust and clean the corresponding belts so as to ensure the quality of the pole pieces. Specifically, for the specific position of the brush dust removal assembly, the specific position is determined according to the position of the pole piece on the belt line, if the pole piece is conveyed at the top of the belt, the brush dust removal assembly is arranged below the belt line, otherwise, the brush dust removal assembly is arranged above the belt line, so that the reliable conveying of the pole piece is ensured.

In this embodiment of the invention, the belt drive assembly and vacuum conduit are placed inside the center to facilitate manual maintenance operations in view of belt replacement. Specific configurations for the first belt drive assembly 86, the second belt drive assembly 88, the third belt drive assembly, the fourth belt drive assembly, and the fifth belt drive assembly include, but are not limited to, servomotors, and the like.

In this embodiment of the invention, as shown in fig. 21 and 22, the lamination device 8 may include a lamination frame 108, a positive UVW stage 100, a negative UVW stage 99, two sets of handling robots 101, two sets of vision inspection devices, a second inflatable shaft 102, a diaphragm manual tape 103, a pass roller assembly 104, an ion wind device 105, a tension roller 106, a diaphragm buffer assembly 107, a lamination stage 110, two sets of pole piece handling robots 111, a hot cut assembly 112, a lamination drop robot 98, and a pole piece waste discharge assembly 109.

The positive UVW platform 100 is disposed on the lamination frame 108 and the negative UVW platform 99 is disposed on the lamination frame 108. The two groups of carrying manipulators 101 are respectively arranged near the positive electrode UVW platform 100 and the negative electrode UVW platform 99 and are used for carrying the positive electrode plate and the negative electrode plate to the positive electrode UVW platform 100 and the negative electrode UVW platform 99. The two sets of visual detection devices are respectively arranged above the anode UVW platform 100 and the cathode UVW platform 99 and are used for visual detection of the anode plate and the cathode plate. A second inflatable shaft 102 is provided on lamination stack 108 for mounting a diaphragm roll. The diaphragm manual tie 103 is disposed on the lamination stack 108. The roller assembly 104 is arranged at the rear end of the manual diaphragm joint 103, and the ion wind device 105 is arranged on the lamination frame 108 and is used for carrying out antistatic treatment on the diaphragm. A tension roller 106 is provided at the rear end of the roller assembly 104 for adjusting the tension of the diaphragm. A diaphragm buffer assembly 107 is provided at the rear end of the tension roller 106 for buffering the diaphragm. Lamination stage 110 is disposed between positive UVW stage 100 and negative UVW stage 99. The two groups of pole piece handling manipulators 111 are respectively arranged above the anode UVW platform 100 and the cathode UVW platform 99 and are used for sequentially handling the cathode piece and the anode piece to the lamination platform to be matched with the diaphragm for lamination. A hot-cutting assembly 112 is disposed above the lamination stage 110 for cutting the diaphragm. The lamination offline robot 98 is disposed at a side of the lamination stage 110, and is used for transferring the laminated battery cells. The pole piece waste discharging assembly 109 is arranged on the side edges of the positive electrode UVW platform 100 and the negative electrode UVW platform 99 and is used for recycling unqualified pole pieces.

When the positive plate and the negative plate are required to be laminated into the battery core, the positive plate and the negative plate are firstly carried on the positive UVW platform 100 and the negative UVW platform 99 through the corresponding carrying mechanical arm 101 respectively, the visual detection device detects and compares the defects of the plates, performs characteristic analysis and calculation on images, presets indexes according to each defect parameter, and if the plates are detected to be unqualified, the plate waste discharging assembly 109 is started to treat and recycle defective products. During lamination, the diaphragm needs to be combined, and the diaphragm is installed on the second air expansion shaft 102 and sequentially passes through the diaphragm manual joint belt 103, the roller passing assembly 104, the tension roller 106 and the diaphragm buffer assembly 107. For the specific structure of the diaphragm tape, reference is made to the above-described tape 35 tape structure. The ion wind device 105 can perform anti-static protection on the diaphragm so as to ensure the quality of the subsequent battery cells. In the lamination process, the electrode sheet handling manipulator 111 firstly places the positive electrode sheet on the diaphragm located on the lamination platform 110, then lays the diaphragm on the positive electrode sheet, then places the negative electrode sheet, and then lays the diaphragm. Finally, the separator is severed by the hot cutting assembly 112 and the stacked cells are moved by the lamination take-off robot 98 to the rubberizing clamping assembly 122.

In this embodiment of the invention, specific configurations for the pole piece waste discharge assembly 109 include, but are not limited to, a jaw cylinder holding a reject pole piece for movement to a waste discharge station, etc.

In this embodiment of the invention, specific configurations for the hot knife assembly 112 include, but are not limited to, the manner in which the air cylinder and hot knife are mated, and the like.

In this embodiment of the invention, specific configurations for the rubberizing clamping assembly 122 include, but are not limited to, the manner in which the moving die set mates with the jaw cylinder clamping pole piece, and the like.

In this embodiment of the present invention, as shown in fig. 23 and 24, the rubberizing device 9 may include a rubberizing seat 121, an eighth moving module 119, a ninth moving module 118, a tenth moving module 114, a rubberizing plate 123, a rubberizing disc 113, a damper 120, a finger type rubberizing piece 115, a trimming cylinder 117, and a stopper 116.

The eighth moving module 119 is disposed on top of the tape dispenser 121, and the ninth moving module 118 is disposed on the eighth moving module 119. The rubberizing plate 123 is arranged on the ninth moving module 118, the rubberizing plate 113 is arranged on the rubberizing plate 123, and the rubberizing plate 121 is provided with a tape roll. A damper 120 is provided on the tape-sticking plate 113 for controlling tension of the adhesive tape. The finger type rubberizing piece 115 is used for adsorbing the adhesive tape, the tenth moving module 114 is arranged on the rubberizing plate 123, and the finger type rubberizing piece 115 is arranged on the tenth moving module 114. The fine tuning cylinder 117 is disposed on the glue board 123, and an output end of the fine tuning cylinder 117 is connected to the tenth moving module 114. The stopper 116 is disposed on the glue plate 123, and is used for limiting the telescopic length of the fine adjustment cylinder 117.

When the battery cell needs to be rubberized, the eighth moving module 119 and the ninth moving module 118 cooperate to enable the adhesive tape on the finger rubberizing piece 115 to be close to and contact the battery cell on the rubberizing clamping assembly 122 so as to carry out rubberizing operation along the surface of the battery cell. After passing through the plurality of rollers as shown in fig. 23, the adhesive tape in the tape-attaching plate 113 is attracted by the finger-type tape-attaching member 15, and thus can be stably attached in cooperation with the tenth moving module 114. The fine setting cylinder 117 can adjust the degree of hugging closely of sticky tape on the finger type rubberizing piece 115 and electric core surface, and stopper 116 passes through bolted connection with rubberizing board 123, can adjust fixed position in order to change the flexible length of fine setting cylinder 117 according to the demand, and the commonality is stronger.

In this embodiment of the present invention, specific structures for the eighth moving module 119, the ninth moving module 118, and the tenth moving module 114 include, but are not limited to, air cylinders, ball screws, etc. as known to those skilled in the art.

In this embodiment of the present invention, as shown in fig. 25 and 26, the hot press test device 10 may include a hot press frame 124, a hot press 125, a first support base 132, a second support base 130, an upper hot press plate 131, a lower hot press plate 127, a teflon film 128, a short circuit test assembly 126, a telescopic plate 137, a telescopic cylinder 135, a lifting cylinder 129, a buffer cylinder 134, and a guide assembly 133.

The hot press 125 runs through the top of the hot pressing frame 124, the first supporting seat 132 is arranged in the hot pressing frame 124, the output end of the hot press 125 is connected with the top of the first supporting seat 132, and the second supporting seat 130 is arranged below the first supporting seat 132. The upper hot pressing plate 131 is disposed at the bottom of the first supporting seat 132, and the lower hot pressing plate 127 is disposed at the top of the second supporting seat 130 and opposite to the upper hot pressing plate 131. The teflon film 128 is disposed between the upper hot pressing plate 131 and the lower hot pressing plate 127, and the short circuit test assembly 126 is disposed at the bottom of the first supporting seat 132, for contacting with the tab of the battery cell to perform a short circuit test. The expansion plate 137 is disposed above the edge of the lower hot press plate 127, and the output end of the expansion cylinder 135 is connected to the expansion plate 137 for driving the expansion plate 137 into or out of the upper side of the expansion plate 137. The lifting cylinder 129 is disposed on the second support base 130, and an output end of the lifting cylinder 129 is connected with the expansion cylinder 135, and is used for cooperating with the expansion plate 137 to lift the upper hot pressing plate 131. The buffer cylinder 134 is disposed on the second support base 130, and an output end of the buffer cylinder 134 is connected to the first support base 132. The guide assembly 133 is disposed on the inner wall of the hot pressing frame 124 in a vertical direction, and the first support base 132 and the second support base 130 are slidably connected with the guide assembly.

When the cell needs to be hot pressed, the telescopic cylinder 135 is driven to start and the telescopic plate 137 is telescopic between the lower hot-pressing plate 127 and the teflon membrane 128. The lifting cylinder 129 is driven to start, and the upper hot-pressing plate 127 and the teflon film 128 are lifted by the telescopic cylinder 135 and the telescopic plate 137 to separate the upper hot-pressing plate 131 and the lower hot-pressing plate 127. Specifically, the teflon membrane 128 is pulled by gravity hammers on both sides during lifting, forming an splayed shape. The cell is placed between the Teflon film 128 and the lower hot pressing plate 131 through a manipulator, the telescopic cylinder 135 drives the telescopic plate 137 to reset so as to move out between the upper hot pressing plate 131 and the lower hot pressing plate 127, the hot press 125 is started to drive the upper hot pressing plate 131 to move along the lower hot pressing plate 127, and the upper hot pressing plate 131 is matched with the cell along the lower hot pressing plate 127 to carry out hot pressing on the cell. Specifically, the insides of the upper and lower hot pressboards 131 and 127 are provided with heating bars. After the hot pressing is completed, the buffer cylinder 134 drives the first supporting seat 132 to move upwards to separate the upper hot pressing plate 131 from the lower hot pressing plate 127, and the discharging manipulator can take away the hot pressed battery cell. In addition, the short circuit test assembly 126 can contact the tab of the cell and perform a short circuit test in a hot or non-hot pressed state of the cell. Specifically, specific structures for the short circuit test assembly 126 include a structure in which a cylinder drives a short circuit test head to move to contact a tab, and the like.

In this embodiment of the present invention, as shown in fig. 25, two sets of upper and lower platens 131 and 127 may be provided and distributed up and down. Specifically, the buffer cylinder 134 located below can separate the upper hot-pressing plate 131 and the lower hot-pressing plate 127 below, and balance the gravity of the second supporting seat 130, so that the pressures of the hot-pressing cells come from the hot press 125, and the consistency of the upper hot-pressing and the lower hot-pressing is better.

In this embodiment of the invention, the thermocompression testing device 10 may further include a thickness measuring sensor and a calibration block. Specifically, the thickness measuring sensor is disposed on the first supporting seat 132, and the calibration block is disposed on the second supporting seat 130, so as to cooperate to test the thickness of the battery cell after hot pressing.

In this embodiment of the invention, specific structures for the guide assembly 137 include, but are not limited to, rail and slider mating structures.

In this embodiment of the present invention, as shown in fig. 27, the discharging device 11 may include a discharging module 143, an up-down material taking module 144, a hollow rotary table 145, two sets of horizontal air cylinders 146, two sets of clamping plates 149, two sets of vertical air cylinders 147, and two sets of clamping jaws 148.

The upper and lower material taking module 144 is arranged on the side edge of the end part of the lower line module 143, the hollow rotary table 145 is arranged on the upper and lower material taking module 144, the two groups of horizontal air cylinders 146 are arranged at the bottom of the hollow rotary table 145, and the output ends of the two groups of horizontal air cylinders 146 are opposite. Two sets of clamping plates 149 are arranged in parallel below the hollow rotary table 145, and the two sets of clamping plates 149 are respectively connected with the output ends of the two sets of horizontal air cylinders 146. Two groups of vertical air cylinders 147 are respectively arranged on two groups of clamping plates 149, two groups of clamping jaws 148 are respectively connected with the output ends of the two groups of vertical air cylinders 147, and the bottom ends of the clamping jaws 148 are L-shaped.

When the battery core needs to be weighed or taken off line, the upper and lower material taking module 144 descends to be above the battery core on the lower line module 144, the two groups of horizontal air cylinders 148 are started to drive the two groups of clamping plates 149 to be away from each other, the clamping jaws 148 are opened, and the two groups of vertical air cylinders 147 drive the two groups of clamping jaws 148 to descend so as to grab the battery core to move the battery core. The hollow rotary table 145 can drive the cell to rotate to adjust the posture of the cell.

In this embodiment of the present invention, specific structures for the hollow rotary table 145 include, but are not limited to, a manner in which a servo motor drives a rotary shaft to rotate a support plate, and the like; specific structures for the up-down take out module 144 include, but are not limited to, air cylinders, ball screws, etc.; specific structures for the drop module 143 include, but are not limited to, belt conveyor lines, and the like.

In this embodiment of the present invention, as shown in fig. 28, the discharging device 11 may further include a profile frame 153, a plurality of down-line belts 152, a plurality of rotation shafts 150, a plurality of driving motors 151, a transfer plate 155, an in-place sensor 154, a stop cylinder 156, a lifting assembly 158, a lifting assembly 157, and a transfer assembly 159.

The profile frame 153 is provided with a plurality of layers, a plurality of lower line belts 152 are respectively arranged on the plurality of layers of the profile frame 153, each layer is provided with two groups of parallel lower line belts 152, the two groups of lower line belts 152 of each layer are connected through the rotating shaft 150, and the output end of the driving motor 151 is connected with the end part of the rotating shaft 150. The lifting assembly 157 is disposed at one end of the profile frame 153, the transferring assembly 159 is disposed on the lifting assembly 157, and the lifting assembly 157 is used to drive the transferring assembly 159 to lift. The transfer plate 155 is disposed on the two sets of the down-line belts 152 of each layer, the transfer plate 155 is used for placing the fixed battery cell, the in-place sensor 154 is disposed on a side wall of one end of the profile frame 153 close to the lifting assembly 157, the lifting assembly 158 is disposed in the middle of the vicinity of one end of the profile frame 153 close to the lifting assembly 157, and the stop cylinder 156 is disposed on one side of the lifting assembly 158 close to the lifting assembly 157.

When the battery cells need to be taken off line, the manipulator grabs the battery cells onto the transfer plate 155 on the lower line belt 152 of the profile frame 153, and the drive motor 152 drives the transfer plate 155 and the battery cells to move along the direction close to the lifting assembly 157. The transfer plate 155 is contacted with the stop cylinder 156, the stop cylinder 156 limits the transfer plate 155, the in-place sensor 154 detects the battery cell, the jacking component 158 jacks up the transfer plate 155, the stop cylinder 156 is retracted, and the transfer plate 155 moves onto the rotating component 159. The lift assembly 157 can drive the battery to lift to effect storage of the conversion between the different layers. The structure can realize stable automatic offline of the battery cell, and can realize the storage and layering functions of the battery cell.

In this embodiment of the invention, specific configurations for the jacking assembly 158 include, but are not limited to, cylinders and the like; specific structures for the lift assembly 157 include, but are not limited to, air cylinders, ball screws, and the like. Specific structures for the transfer assembly 159 include, but are not limited to, a push cylinder disposed on the transfer seat, a conveyor belt disposed on the transfer seat, and the like.

On the other hand, the invention also provides a control method of the device for cutting the tab lamination based on the fixed cutting laser, as shown in fig. 29, the control method may include:

In step S10, a pole piece roll is acquired. Wherein, can adopt the sensor to install the detection in place to the utmost point volume.

In step S11, the pole piece pole rolls are driven to unwind to form a tape transport. Wherein, adopt servo motor drive utmost point to roll up unreels.

In step S12, the tape edge is identified, and tab marks are pressed at the tape edge.

In step S13, tab marks are identified, and laser cutting is performed along the tab marks to obtain tabs.

In step S14, the tab is identified, and V-angles are cut on both sides of the extending direction of the material tape.

In step S15, a V-angle is identified, and a tip of the V-angle is cut to form a pole piece.

In step S16, visual inspection is carried out on the positive electrode plate and the negative electrode plate, and qualified electrode plates are screened.

In step S17, the positive electrode sheet, the negative electrode sheet and the separator are laminated in order to form the battery cell.

In step S18, the surface of the battery cell is rubberized.

In step S19, a hot press test is performed on the battery cells.

In step S20, the battery cells that pass the offline test are tested.

In step S10 to step S20, the pole piece coil is first unreeled, a material belt is formed in a belt penetrating manner, tab marks are pressed in the conveying process of the material belt, and the tab marks are matched with subsequent laser cutting to cut out tabs of the tab. And cutting V-shaped angles at two sides of the material belt according to the positions of the tabs so as to form pole pieces in cooperation with the subsequent cutting at the tips of the V-shaped angles. After the positive plate and the negative plate are cut, visual detection is carried out on the positive plate and the negative plate respectively to obtain qualified pole pieces and reject unqualified pole pieces. And laminating the positive plate, the negative plate and the diaphragm according to a certain sequence to form a battery cell, carrying out rubberizing operation on the surface of the battery cell, and finally carrying out hot-pressing test on the battery cell, wherein the test is qualified. The control method can enable the coordination among the working procedures to be more compact and accurate, and ensure the reliability and the efficiency of the production of the battery cell.

The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention. In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.

Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.

Claims

1. Device for cutting tab laminations based on fixed cutting laser, characterized by comprising:

the unreeling device (3) comprises a positive plate unreeling device (1) and a negative plate unreeling device (2), wherein the positive plate unreeling device (1) and the negative plate unreeling device (2) are arranged in parallel and have the same structure and are used for conveying the material belt (35) step by step;

The laser tab cutting device (4) is arranged at the output end of the unreeling device (3) and is used for cutting tabs on the material belt (35);

the V-angle cutting device (5) is arranged at the output end of the laser tab cutting device (4) and is used for cutting a V angle on the material belt (35);

the main drive cutting device (6) is arranged at the output end of the V-angle cutting device (5) and is used for cutting at the V-angle to form a positive plate or a negative plate;

lamination means (8) for laminating the positive and negative plates to form a cell;

the vacuum conveying belt (7) is arranged between the main drive cutting device (6) and the lamination device (8) and is used for conveying the positive plate or the negative plate to the lamination device (8) for lamination;

the rubberizing device (9) is arranged at the output end of the lamination device (8) and is used for rubberizing the battery cell;

the hot-pressing testing device (10) is arranged at the output end of the rubberizing device (9) and is used for hot-pressing and testing the battery cell;

and the blanking device (11) is arranged at the output end of the testing device (10) and is used for blanking the battery cells which are qualified in testing.

2. The apparatus according to claim 1, characterized in that said positive sheet unreeling device (1) comprises:

An unreeling seat (12);

two groups of first air expansion shafts (13) are arranged on the unreeling seat (12);

the two groups of automatic pole coil up-down devices (14) are arranged below the corresponding first air expansion shafts (13) and are used for being matched with the AGV trolley to mount pole coils in place on the first air expansion shafts (13);

the two groups of belt breakage detection sensors (25) are respectively arranged above the two groups of inflatable shafts (13) and are used for detecting the in-place state of the corresponding pole coil;

an automatic tape splicing assembly (16) arranged on the unreeling seat (12) and located above between the two groups of first air expansion shafts (13), the automatic tape splicing assembly comprising:

the two groups of the strip connecting seats (31) are symmetrically arranged, and the strip (35) of the pole coil passes through the two groups of the strip connecting seats (31);

two groups of standby material belt reels (26) are respectively arranged above the two groups of belt receiving seats (31);

two groups of adsorption tables (29) are respectively arranged at the opposite ends of the two groups of tape connecting seats (31);

a cutter (30) movably penetrating through one group of the adsorption tables (29);

two groups of rubberizing tables (27) are respectively and vertically connected with the two groups of adsorption tables (29);

the two groups of rotary air cylinders (32) are symmetrically arranged on the two groups of tape connecting seats (31), and the output ends of the rotary air cylinders (32) are connected with the corresponding rubberizing tables (27);

The two groups of pushing air cylinders (28) are respectively arranged at the mutually far ends of the two groups of rotating air cylinders (32), and the output ends of the pushing air cylinders (28) are connected with the corresponding rotating air cylinders (32);

a manual tape splicing assembly (17) disposed at a rear end of the automatic tape splicing assembly (16), the manual tape splicing assembly (17) comprising:

a plurality of first pressing plates (33), wherein the plurality of first pressing plates (33) are mutually parallel and are perpendicular to the extending direction of the material belt (35);

the pneumatic assembly (34) is connected with two ends of the first pressing plate (33) and is used for driving the first pressing plate (33) to lift so as to loosen or compress the material belt (35);

the air knife dust removal subassembly (18) is in the rear end of manual connecing area subassembly (17) is used for to clear up the dust on the material area (35), air knife dust removal subassembly (18) include:

a dust removal base (37) arranged on the unreeling seat (12);

the two groups of air knives (36) are oppositely arranged on the dust removal base (37), and the material belt (35) penetrates through the two groups of air knives (36);

the two groups of dust collection openings are respectively arranged at the opposite sides of the two groups of air knives (36);

two groups of dust collection pipes (38) are respectively connected with the two groups of air knives (36);

the pole ear indentation subassembly (19) is arranged at the rear end of the air knife dust removal subassembly (18) and is used for pressing out pole ear indentation on the material belt (35), and the pole ear indentation subassembly (19) comprises:

The indentation seat (40) is arranged on the unreeling seat (12);

the two ends of the first roll shaft (42) are rotationally connected with the indentation seat (40);

the two ends of the ball screw are rotatably connected with the indentation seat (40) positioned above, and one end of the ball screw penetrates through the indentation seat (40) and is fixedly connected with an adjusting plate (44);

a guide rail (43) provided on the indentation seat (40);

a connecting seat (15) which is connected with the guide rail (43) in a sliding way and is connected with a nut of the ball screw;

a reinforcing rib cylinder (39) arranged on the connecting seat (15);

the indentation roller (41) is connected with the output end of the reinforcing rib cylinder (39);

the pole piece edge detector is arranged on the connecting seat (15) and is used for detecting the edge of the material belt (35);

tension control assembly (20) set up the rear end of utmost point ear indentation subassembly (19) for to the tension of material area (35) is monitored and controlled, tension control assembly (20) include:

the detection seat (47) is arranged on the unreeling seat (12);

the two ends of the second roll shaft (45) are rotatably connected with the detection seat (47);

two groups of tension detection sensors (46) respectively arranged at two ends of the second roll shaft (45);

a tension seat (21) arranged at the rear end of the detection seat (47);

The two ends of the tension floating roller (48) are rotationally connected with the tension seat (21);

a low friction cylinder connected to an end of the tension dancer roll (48);

the electric proportional valve is connected with the low-friction air cylinder and is used for adjusting the tension of the material belt (35) in a matched mode with the low-friction air cylinder and the tension floating roller (48);

the color code sensor (22) is arranged on the side edge of the material belt (35) and used for detecting and identifying the material belt (35) on the material belt (35) with the unqualified adhesive tape;

a serpentine correction assembly (23) disposed at a rear end of the tension control assembly (20) for defining an edge flush of the web (35), the serpentine correction assembly (23) comprising:

the deviation correcting controller (49) is arranged on the unreeling seat (12);

the deviation correcting guide assembly (51) is arranged on the deviation correcting controller (49) and used for guiding the material belt (35);

two groups of third roll shafts (50) are arranged on the deviation rectifying guide assembly (51) in parallel;

the deviation correcting sensor is arranged on the deviation correcting controller (49);

buffer roller subassembly (24) set up in the rear end of snakelike rectifying subassembly (23), buffer roller subassembly includes:

the up-and-down moving module (52) is arranged on the unreeling seat (12), and the output end of the up-and-down moving module (52) faces downwards;

A fourth roller shaft (53) provided at the output end of the up-and-down movement module (52);

the two groups of fifth roll shafts (54) are symmetrically arranged on two sides of the up-and-down moving module (52).

3. The apparatus according to claim 1, characterized in that the laser tab cutting device (4) comprises:

a first base (55);

a first moving module (56) disposed on the first base (55);

the second mobile module (57) is arranged on the first mobile module (56) and is vertically distributed with the first mobile module (56);

a first mold-entering carrier roller assembly (58) arranged on the second moving module (57) and used for supporting the material belt (35);

a first demolding idler assembly (63) arranged in parallel with the first mold-in idler assembly (58);

a third moving module (61) disposed above the first base (55);

a fourth moving module (62) arranged on the third moving module (61) and vertically distributed with the third moving module (61);

a fifth moving module (60) arranged on the fourth moving module (62), wherein the fifth moving module (60) is vertical to the third moving module (61) and the fourth moving module (62);

the laser (59) is arranged on the fifth moving module (60) and is used for cutting the tab of the material belt (35);

The compression cylinder is arranged on the second moving module (57);

the second pressing plate (65) is arranged at the output end of the compression cylinder;

the lug profiling supporting plate (64) is arranged below the second pressing plate (65) and is used for being matched with the second pressing plate (65) to press the material belt (35);

and the vacuum dust removal assembly (66) is arranged between the first mold entering carrier roller assembly (58) and the first mold exiting carrier roller assembly (63) and is used for recycling waste generated when the material belt (35) cuts the tab.

4. The apparatus according to claim 1, characterized in that said V-angle cutting means (5) comprise:

a second base (70);

a second mold entering carrier roller assembly (74) arranged on the second base (70);

a second demolding idler assembly (69) arranged in parallel with the second mold-in idler assembly (74);

two sets of V angle cuts the subassembly, set up second go into mould bearing roller subassembly (74) with second demolding bearing roller subassembly (69), and about the extending direction symmetry of material area (35), V angle cuts the subassembly and includes:

a cutting frame (68);

a first cutting die (75) disposed inside the cutting frame (68);

the first cutting driving assembly (67) is arranged on the cutting frame (68), and the output end of the first cutting driving assembly (67) is connected with the first cutting die (75) and is used for driving the first cutting die (75) to cut a V angle on the material belt (35);

A waste discharge pipe (73) which is fixedly penetrated through the second base (70) and the cutting frame (68) and is communicated with the inner bottom of the cutting frame (68);

two groups of sixth moving modules (71), wherein the two groups of cutting frames (68) are respectively connected with the two groups of sixth moving modules (71);

and the seventh moving module (72) is arranged at the top of the second base (70), and the two groups of the sixth moving modules (71) are arranged on the seventh moving module (72).

5. The apparatus according to claim 1, wherein the master cutting device (6) comprises:

a third base (76);

the tab searching sensor (83) is arranged on the third base (76) and used for detecting the position of the arc angle of the tab;

a main drive roller assembly disposed on the third base (76), the main drive roller assembly comprising:

a main driving roller (85) with two ends rotatably connected with the third base (76),

the output end of the main driving motor (78) is connected with one end of the main driving roller (85);

a pressure roller assembly disposed above the primary drive roller (85), the pressure roller assembly comprising:

a pressing roller (81),

the compression roller cylinder (80) is arranged at the top of the third base (76), and the output end of the compression roller cylinder (80) is connected with the compression roller (81) and used for driving the compression roller (81) to be close to or far away from the main driving roller (85);

A second cutting die (79) arranged in parallel with the press roller (81);

the second cutting driving assembly (77) is arranged on the third base (76) and connected with the top of the second cutting die (79) for driving the second cutting die (79) to cut the pole piece;

a dust removal pipe (82) arranged below the main driving roller (85);

and a brush assembly (84) disposed inside the dust removing pipe (82) and in contact with an outer surface of the main driving roller (85).

6. The apparatus according to claim 1, characterized in that the vacuum conveyor belt (7) comprises:

a first belt drive assembly, the first belt drive assembly comprising:

the first belt line (87), one end of the first belt line (87) is arranged at the output end of the main drive cutting device (6);

a first belt drive assembly (86) coupled to the first belt line (87) for driving the first belt line (87) to rotate;

a first brush dust removing assembly (93) disposed on the first belt line (87) for removing dust from the first belt line (87);

the second belt owner drives the subassembly, is the setting of hanging upside down, the second belt owner drives the subassembly and includes:

a second belt line (89), one end of the second belt line (89) being provided at the other end of the first belt line (87);

The second belt driving assembly (88) is connected with the second belt line (89) and is used for driving the second belt line (89) to rotate;

a second brush dust removal assembly (94) disposed on the second belt line (89) for removing dust from the second belt line (89);

a third belt drive assembly, the third belt drive assembly comprising:

a third belt line (90), one end of the third belt line (90) being provided at the other end of the second belt line (89);

the third belt driving assembly is connected with the third belt line (90) and is used for driving the third belt line (90) to rotate;

a third brush dust removing assembly (95) disposed on the third belt line (90) for removing dust from the third belt line (90);

a fourth belt drive assembly, the fourth belt drive assembly comprising:

a fourth belt line (91), wherein one end of the fourth belt line (91) is arranged at the other end of the third belt line (90);

the fourth belt driving assembly is connected with the fourth belt line (91) and is used for driving the fourth belt line (91) to rotate;

a fourth brush dust removing assembly (96) disposed on the fourth belt line (91) for removing dust from the fourth belt line (91);

A fifth belt drive assembly, the fifth belt drive assembly comprising:

a fifth belt line (92), one end of the fifth belt line (92) being provided at the other end of the fourth belt line (91);

the fifth belt driving assembly is connected with the fifth belt line (92) and is used for driving the fifth belt line (92) to rotate;

and the fifth brush dust removing assembly (97) is arranged on the fifth belt line (92) and is used for removing dust from the fifth belt line (92).

7. The apparatus according to claim 1, characterized in that said lamination means (8) comprise:

a lamination stack (108);

a positive UVW platform (100) disposed on the lamination frame (108);

a negative UVW platform (99) disposed on the lamination frame (108);

the two groups of carrying manipulators (101) are respectively arranged near the anode UVW platform (100) and the cathode UVW platform (99) and are used for carrying the anode sheet and the cathode sheet to the anode UVW platform (100) and the cathode UVW platform (99);

the two groups of visual detection devices are respectively arranged above the anode UVW platform (100) and the cathode UVW platform (99) and are used for performing visual detection on the anode sheet and the cathode sheet;

a second inflatable shaft (102) arranged on the lamination frame (108) and used for installing a diaphragm coil;

A manual diaphragm band (103) arranged on the lamination frame (108);

the roller passing assembly (104) is arranged at the rear end of the manual diaphragm joint belt (103);

an ion wind device (105) arranged on the lamination frame (108) and used for carrying out antistatic treatment on the diaphragm;

a tension roller (106) arranged at the rear end of the roller passing assembly (104) and used for adjusting the tension of the diaphragm;

the diaphragm buffer assembly (107) is arranged at the rear end of the tension roller (106) and is used for buffering the diaphragm;

a lamination stage (110) disposed between the positive UVW stage (100) and the negative UVW stage (99);

the two groups of pole piece carrying manipulators (111) are respectively arranged above the anode UVW platform (100) and the cathode UVW platform (99) and are used for carrying the cathode piece and the anode piece to the lamination platform in sequence to be matched with the diaphragm for lamination;

a hot-cutting assembly (112) disposed above the lamination stage (110) for cutting the diaphragm;

the lamination offline mechanical arm (98) is arranged at the side edge of the lamination platform (110) and is used for transferring the laminated battery cells;

and the pole piece waste discharge assembly (109) is arranged on the side edges of the anode UVW platform (100) and the cathode UVW platform (99) and is used for recycling unqualified pole pieces.

8. The apparatus according to claim 1, characterized in that said rubberizing device (9) comprises:

a rubberizing base (121);

an eighth moving module (119) arranged on the top of the rubberizing seat (121);

a ninth movement module (118) provided on the eighth movement module (119);

the glue pasting plate (123) is arranged on the ninth mobile module (118);

the rubberizing disc (113) is arranged on the rubberizing plate (123), and a tape roll is arranged in the rubberizing disc (121);

a damper (120) provided on the tape-sticking plate (113) for controlling tension of the adhesive tape;

-a finger glue piece (115) for sucking the tape;

a tenth moving module (114) arranged on the rubberizing plate (123), wherein the finger rubberizing piece (115) is arranged on the tenth moving module (114);

the fine adjustment cylinder (117) is arranged on the glue sticking plate (123), and the output end of the fine adjustment cylinder (117) is connected with the tenth movable module (114);

and the limiting block (116) is arranged on the rubberizing plate (123) and used for limiting the telescopic length of the fine adjustment cylinder (117).

9. The apparatus according to claim 1, wherein the thermocompression testing device (10) comprises:

a hot-pressing frame (124);

A hot press (125) penetrating the top end of the hot press frame (124);

the first supporting seat (132) is arranged in the hot pressing frame (124), and the output end of the hot press (125) is connected with the top of the first supporting seat (132);

a second support base (130) disposed below the first support base (132);

an upper hot pressing plate (131) arranged at the bottom of the first supporting seat (132);

the lower hot pressing plate (127) is arranged at the top of the second supporting seat (130) and is opposite to the upper hot pressing plate (131);

a teflon membrane (128) disposed between the upper hot platen (131) and the lower hot platen (127);

the short circuit test assembly (126) is arranged at the bottom of the first supporting seat (132) and is used for being contacted with the electrode lug of the battery cell to perform short circuit test;

a telescoping plate (137) disposed above the edge of the lower hot platen (127);

the output end of the telescopic air cylinder (135) is connected with the telescopic plate (137) and used for driving the telescopic plate (137) to enter or move out of the upper part of the telescopic plate (137);

the lifting cylinder (129) is arranged on the second supporting seat (130), and the output end of the lifting cylinder (129) is connected with the telescopic cylinder (135) and is used for being matched with the telescopic plate (137) to lift the upper hot pressing plate (131);

The buffer cylinder (134) is arranged on the second supporting seat (130), and the output end of the buffer cylinder (134) is connected with the first supporting seat (132);

the guide assembly (133) is vertically arranged on the inner wall of the hot pressing frame (124), and the first supporting seat (132) and the second supporting seat (130) are both in sliding connection with the guide assembly.

10. The control method of the equipment for cutting the tab lamination based on the fixed cutting laser is characterized by comprising the following steps:

obtaining a pole piece pole roll;

driving the pole piece pole roll to unreel to form a material belt for conveying;

identifying the edge of the material belt, and pressing tab marks on the edge of the material belt;

identifying the tab mark, and cutting out a tab along the tab mark by laser;

identifying the electrode lugs, and cutting V angles at two sides of the extension direction of the material belt;

identifying the V angle, and cutting at the tip of the V angle to form a pole piece;

visual detection is carried out on the positive electrode plate and the negative electrode plate, and qualified electrode plates are screened;

laminating the positive plate, the negative plate and the diaphragm in sequence to form an electric core;

rubberizing the surface of the battery cell;

performing hot-press test on the battery cell;

and (5) testing qualified battery cells in a down-line mode.