CN117506172A - High-quality lithium battery pole piece laser cutting device and method - Google Patents
High-quality lithium battery pole piece laser cutting device and method Download PDFInfo
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- CN117506172A CN117506172A CN202410015494.4A CN202410015494A CN117506172A CN 117506172 A CN117506172 A CN 117506172A CN 202410015494 A CN202410015494 A CN 202410015494A CN 117506172 A CN117506172 A CN 117506172A
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- laser cutting
- pole piece
- lithium battery
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- 238000003698 laser cutting Methods 0.000 title claims abstract description 65
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 11
- 238000005520 cutting process Methods 0.000 claims abstract description 78
- 239000000463 material Substances 0.000 claims abstract description 46
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims 9
- 238000010168 coupling process Methods 0.000 claims 9
- 238000005859 coupling reaction Methods 0.000 claims 9
- 238000010521 absorption reaction Methods 0.000 claims 3
- 238000001179 sorption measurement Methods 0.000 description 15
- 230000005540 biological transmission Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000011149 active material Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/38—Removing material by boring or cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to the technical field of lithium battery preparation, and provides a high-quality lithium battery pole piece laser cutting device and method, wherein the device comprises a machine; the material conveying piece is arranged on the machine table and is used for conveying coiled materials along the material conveying direction; the rolling mechanism comprises two rollers which are arranged oppositely, the two rollers are matched to press the coil stock out of a first section and a second section, the second section is distributed on two sides of the first section, and structural faults exist between the first section and the second section; the first laser cutting unit is used for separating the second interval; the second laser cutting unit is used for cutting the electrode lug and a round angle at the joint of the electrode lug and the first interval; the image acquisition unit is used for detecting the cutting completion degree of the first interval and is connected with the material conveying part in a signal manner; the cutting mechanism is used for cutting the cut first interval section in a segmented mode. The invention can effectively improve the cutting preparation efficiency and quality of the lithium battery pole piece.
Description
Technical Field
The invention belongs to the technical field of lithium battery preparation, and particularly relates to a high-quality lithium battery pole piece laser cutting device and method.
Background
In the manufacturing process of the lithium battery pole piece, the pole lug is usually required to be cut out on a coil stock, then the round corner cutting is carried out on the pole lug through a die, but different cutting devices are required, in the manufacturing process of the battery pole piece, the surface of the battery pole piece is coated with an active material with fluidity, the active material is usually only positioned in a pole lug cutting area of a pole piece center forming area but not positioned at the edge of the pole piece, in the whole coil stock coating process, the thickness of the active material is gradually thinned at the edge of the pole piece center forming area, when the subsequent rolling process is carried out, pressure acts on the whole coil stock surface with uneven thickness, so that the pole lug cutting area on the pole piece is easy to wrinkle with the edge of the pole piece center forming area, and the pole piece manufacturing efficiency and quality are reduced.
Disclosure of Invention
The invention aims to provide a high-quality lithium battery pole piece laser cutting device and method, so as to solve the problems and effectively improve the cutting preparation efficiency and quality of the lithium battery pole piece.
In order to achieve the above object, the present invention provides the following solutions: a high-quality laser cutting device for lithium battery pole pieces comprises,
the machine table is sequentially provided with a rolling mechanism, a first laser cutting unit, a second laser cutting unit, an image acquisition unit and a cutting mechanism along the feeding direction;
the material conveying piece is arranged on the machine table and is used for conveying coiled materials along the material conveying direction;
the rolling mechanism comprises two rollers which are oppositely arranged, the two rollers are matched to press the coil stock roller out of a first section and a second section, the second section is distributed on two sides of the first section, and a structural fault exists between the first section and the second section;
the first laser cutting unit is used for separating the second interval;
the second laser cutting unit is used for cutting out a lug and a round angle at the joint of the lug and the first section on the first section;
the image acquisition unit is used for detecting the cutting completion degree of the first section and is connected with the material conveying piece in a signal manner;
the cutting mechanism is used for cutting the cut first interval section in a segmented mode.
Preferably, the roller is provided with a leveling part and two limiting parts, the two limiting parts are arranged on two sides of the leveling part, wherein the coil stock is formed with a first section through the cooperation of the two leveling parts, the coil stock is formed with a second section through the cooperation of the four limiting parts which are opposite to each other, and a drop gap is arranged between the limiting parts and the leveling parts.
Preferably, the leveling part comprises a first press roller which is connected to the machine table in a switching mode, two ends of the first press roller are fixedly connected with second press rollers respectively, the shaft diameter of the first press roller is smaller than that of the second press roller, the second press roller is the limiting part, a first driving component is arranged on the machine table corresponding to the second press roller, and the output end of the first driving component is connected with the second press roller.
Preferably, the first driving assembly comprises supporting seats fixedly connected to two sides of the machine table, the roller frame is arranged between the two supporting seats, lifting pieces are arranged on the supporting seats, lifting ends of the lifting pieces are connected with mounting seats, the mounting seats are limited and slidingly connected to the supporting seats, empty slots are formed in the mounting seats, first motors are fixedly connected in the empty slots, and output shafts of the first motors extend out of the mounting seats and are fixedly connected with the second pressing rollers.
Preferably, the lifting piece comprises an oil cylinder fixedly connected to the top surface of the supporting seat, a sliding groove is formed in the supporting seat, one end of the mounting seat is limited and slidably connected in the sliding groove, the movable end of the oil cylinder extends into the supporting seat to be fixedly connected with the top surface of the mounting seat, one end of a damper is fixedly connected to the bottom surface of the mounting seat, and the other end of the damper is fixedly connected with the machine table.
Preferably, the first laser cutting unit comprises a first portal frame fixedly connected to the machine table, wherein first laser lenses are respectively arranged on two sides of the inner wall of the top end of the first portal frame, and the first laser lenses face to the joint of the first section and the second section;
the second laser cutting unit comprises a second portal frame fixedly connected to the machine table, second laser lenses are respectively arranged on two sides of the inner wall of the top end of the second portal frame, and the second laser lenses face to two side edges of the first section.
Preferably, a dust removing part is arranged on the second portal frame, the dust removing part comprises a lifting cylinder fixedly connected with the inner wall of the top end of the second portal frame and far away from one side of the second laser lens, an adsorption cover is fixedly connected with the movable end of the lifting cylinder along the vertical downward extension, a light transmission window is formed in the adsorption cover corresponding to the second laser lens, a light transmission plate is fixedly connected in the light transmission window, one end of the adsorption cover is communicated with an air pump through a communicating pipe, and the air pump is fixedly connected with the second portal frame.
Preferably, the cutting mechanism comprises two guide plates fixedly connected to two sides of the machine table relatively, two guide plates are fixedly connected to two ends of a fixing plate respectively, a hydraulic device is arranged on the fixing plate, a hydraulic rod of the hydraulic device vertically penetrates through the fixing plate downwards, a cutting plate is fixedly connected to the bottom surface of the cutting plate, a cutter is fixedly connected to the bottom surface of the fixing plate, a plurality of guide rods are vertically arranged around the fixing plate, two ends of each guide rod are fixedly connected to the fixing plate and the machine table respectively, and a plurality of guide rods penetrate through the cutting plate and are in sliding connection with the cutting plate.
Preferably, the material conveying part comprises a conveying belt movably connected to the top surface of the machine table, a feeding plate is arranged on the top surface of the conveying belt, and a positioning groove is formed in the joint of the top surface of the feeding plate corresponding to the first section and the second section;
the image acquisition unit is used for controlling the conveying direction of the conveying belt.
A high-quality lithium battery pole piece laser cutting method based on a high-quality lithium battery pole piece laser cutting device comprises the following steps:
rolling the coil stock by two rollers;
dividing the first section and the second section using a first laser cutting unit;
cutting out the electrode lug and a round angle at the joint of the electrode lug and the first interval by using a second laser cutting unit on the edges of the two sides of the first interval;
detecting cutting conditions of the lugs and the fillets through an image acquisition unit, wherein when the cutting is unqualified, the image acquisition unit controls the material conveying piece to move the coiled material for repeated cutting, and when the cutting is qualified, the coiled material book is conveyed to a cutting mechanism;
and cutting the first section coiled material cut with the tab by sections through a cutting mechanism to finish the preparation of the battery pole piece.
Compared with the prior art, the invention has the following advantages and technical effects:
according to the invention, the roller mechanism, the first laser cutting unit, the second laser cutting unit, the image acquisition unit and the cutting mechanism are sequentially arranged on the machine table, the coiled materials transported by the material conveying piece are subjected to rolling action through the cooperation of the two oppositely arranged rollers, the rolled coiled materials form a first section and a second section with structural faults, the second section is distributed on two sides of the first section, the edge of a pole piece center forming area in the prior art is divided into the second section, the first section is isolated by the structural faults, the structural integrity of the first section is ensured, the second section which is uneven in thickness and easy to wrinkle is divided by the first laser cutting unit, then the second laser cutting unit is used for cutting the pole lugs and the round corners of the pole lugs in the first section, the structural relation between the pole lugs and the round corners is accurately positioned, compared with the traditional method, the quality and the efficiency of preparing the pole pieces can be effectively improved, the first section with the pole lugs and the round corners is detected by the image acquisition unit, the first section with the thickness uneven thickness is conveyed to the first section with the round corners, the qualified pole pieces are cut and the qualified battery is further cut, and the qualified battery is conveyed to the second section is cut, and the qualified battery is further cut, and the battery is manufactured, and the qualified battery is cut, and the qualified and is cut, and the battery is further cut, and the qualified.
Drawings
For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:
FIG. 1 is a schematic view of the positional relationship between a roll and a feed plate;
FIG. 2 is a diagram of the positional relationship between the image acquisition unit and the second portal frame;
FIG. 3 is a schematic view of the structure of the mounting base;
FIG. 4 is a cross-sectional view of a first section and a second section on one side;
1, a machine table; 2. a roller; 201. a first press roller; 202. a second press roller; 3. an image acquisition unit; 4. a support base; 5. a first motor; 6. an oil cylinder; 7. a mounting base; 8. a damper; 81. a piston rod; 82. a damping spring; 9. a first portal frame; 10. a first laser lens; 11. a second portal frame; 12. a second laser lens; 13. a lifting cylinder; 14. an adsorption cover; 15. a light-transmitting plate; 16. a communicating pipe; 17. an air pump; 18. a guide plate; 19. a fixing plate; 20. a hydraulic device; 21. a hydraulic rod; 22. cutting the plate; 23. a cutter; 24. a guide rod; 25. a conveyor belt; 26. a feeding plate; 27. a first section; 28. and a second interval.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Examples: referring to fig. 1-4, a high quality laser cutting device for lithium battery pole pieces, comprising,
the machine table 1 is provided with a rolling mechanism, a first laser cutting unit, a second laser cutting unit, an image acquisition unit 3 and a cutting mechanism in sequence along the feeding direction;
the material conveying piece is arranged on the machine table 1 and is used for conveying coiled materials along the material conveying direction;
the rolling mechanism comprises two rollers 2 which are oppositely arranged, the two rollers 2 are matched to press the coil stock out of a first section 27 and a second section 28, the second section 28 is distributed on two sides of the first section 27, and structural faults exist between the first section 27 and the second section 28;
the first laser cutting unit is used for separating the second section 28;
the second laser cutting unit is used for cutting the electrode lug and a round angle at the joint of the electrode lug and the first section 27 on the first section 27;
the image acquisition unit 3 is used for detecting the cutting completion degree of the first section 27, and the image acquisition unit 3 is in signal connection with the material conveying part;
the cutting mechanism is used for sectionally cutting the cut first section 27.
According to the invention, a roller 2 mechanism, a first laser cutting unit, a second laser cutting unit, an image acquisition unit 3 and a cutting mechanism are sequentially arranged on a machine table 1, rolling is carried out on coiled materials transported by a material conveying member by matching two oppositely arranged rollers 2, rolled coiled materials form a first section 27 and a second section 28 with structural faults, the second section 28 is distributed on two sides of the first section 27, the edges of a pole piece center forming area in the prior art are divided into the second section 28, the structural faults are utilized to isolate the first section 27, the structural integrity of the first section 27 is ensured, the second section 28 with uneven thickness and easy wrinkling is divided by the first laser cutting unit, then the second laser cutting unit is utilized to cut the pole lugs and the round corners in the first section 27, the structural relation between the pole lugs and the round corners is not precisely positioned, and compared with the traditional mode, the traditional mode of adopting a plurality of different preparation devices to carry out cutting preparation, the quality and the efficiency of battery pole pieces can be effectively improved, finally, the image acquisition unit 3 and the first laser cutting unit can be used to directly cut the first section 27, the first section 27 is not cut, and the qualified battery pieces are further cut, and the battery pieces are manufactured, and the qualified battery pieces are cut by the first section 27, and the qualified battery pieces are further cut and the second section is conveyed by the first section and the second section is cut.
The image acquisition unit 3 adopts common image acquisition equipment such as industrial camera, through carrying out image acquisition to the first interval 27 that cuts has utmost point ear and fillet, then transmit image signal to the photosensitive element, convert image signal into the electrical signal by the photosensitive element and through signal transceiver with the electrical signal reception and transmission to the treater in, mutually support through treater and digital information memory, thereby judge whether the degree of cutting of utmost point ear and fillet is complete to the electrical signal, obtain the removal instruction through the treater operation and transmit information to the controller through signal transceiver, finally carry the material direction of material conveying spare is carried to second laser cutting unit or cutting mechanism by the controller control, above-mentioned image acquisition unit 3 and control principle are that prior art does not make excessive statement.
Further, the roller 2 is provided with a leveling part and two limiting parts, the two limiting parts are arranged on two sides of the leveling part, wherein a first section 27 is formed by matching the two leveling parts, a second section 28 is formed by matching the four opposite limiting parts, and a drop gap is arranged between the limiting parts and the leveling parts.
Referring to fig. 1 and 4, by setting the roller 2 as a structure formed by matching a leveling part and two limiting parts, the leveling part is utilized to roll the material to form a first section 27, and the two limiting parts are arranged on two sides of the leveling part, and a structural fault exists between a second section 28 formed by matching two corresponding limiting parts and the first section 27 through a drop gap between the limiting parts and the leveling part, so that the leveling effect of the first section 27 is ensured, and the subsequent separation of the second section 28 is facilitated.
Further, the leveling part comprises a first press roller 201 which is connected to the machine 1 in a switching mode, two ends of the first press roller 201 are fixedly connected with second press rollers 202 respectively, the shaft diameter of the first press roller 201 is smaller than that of the second press roller 202, the second press roller 202 is a limiting part, a first driving component is arranged on the machine 1 corresponding to the second press roller 202, and the output end of the first driving component is connected with the second press roller 202.
It can be appreciated that the material to be rolled is sufficient to effectively fill the gap between the two first press rolls 201 and to be able to pass through the gap between the two second press rolls 202 disposed opposite to each other by interference after the rolling operation; the shaft diameter of the first press roller 201 is smaller than that of the second press roller 202, so that the thickness of the first rolled section 27 is larger than that of the second section 28, the structural requirement of the battery pole piece is met, and the coiled material structure which is easy to wrinkle and uneven in thickness is filled into the gap between the second press rollers 202.
Further, the first driving assembly comprises supporting seats 4 fixedly connected to two sides of the machine table 1, the roller 2 is erected between the two supporting seats 4, lifting pieces are arranged on the supporting seats 4, lifting ends of the lifting pieces are connected with mounting seats 7, the mounting seats 7 are in limiting sliding connection on the supporting seats 4, empty slots are formed in the mounting seats 7, first motors 5 are fixedly connected in the empty slots, and output shafts of the first motors 5 extend out of the mounting seats 7 to be fixedly connected with the second press rollers 202.
Further, the lifting piece comprises an oil cylinder 6 fixedly connected to the top surface of the supporting seat 4, a sliding groove is formed in the supporting seat 4, one end of the installation seat 7 is limited and slidably connected in the sliding groove, the movable end of the oil cylinder 6 stretches into the supporting seat 4 to be fixedly connected with the top surface of the installation seat 7, one end of the damper 8 is fixedly connected to the bottom surface of the installation seat 7, and the other end of the damper 8 is fixedly connected with the machine 1.
Referring to fig. 2 and 3, the oil cylinder 6 drives the mounting seat 7 to lift, the lifting height of the two rollers 2 is controlled, the first motor 5 is started to drive the second press rollers 202 to rotate, two corresponding first motors 5 are oppositely arranged, the two first motors 5 drive the two second press rollers 202 to rotate in opposite directions, a rolling action direction in the same direction as the material conveying direction is formed, and in the process that the oil cylinder 6 drives the mounting seat 7 to lift, the damper 8 improves the vibration reduction effect, and the effective rolling operation is ensured.
The damper 8 is formed by a common structure in which a piston rod 81 is sleeved with a damping spring 82.
Further, the first laser cutting unit comprises a first portal frame 9 fixedly connected to the machine table 1, and two sides of the inner wall of the top end of the first portal frame 9 are respectively provided with a first laser lens 10, wherein the first laser lens 10 faces to the joint of the first section 27 and the second section 28;
the second laser cutting unit comprises a second portal frame 11 fixedly connected to the machine table 1, wherein two sides of the inner wall of the top end of the second portal frame 11 are respectively provided with a second laser lens 12, and the second laser lenses 12 face to the edges of two sides of the first section 27.
Referring to fig. 1, the first laser cutting unit and the second laser cutting unit all adopt a common laser cutting machine, and the second section 28 coil structure with wrinkling and uneven thickness is generated at the joint of the first section 27 and the second section 28 through the first laser lens 10, so that the first section 27 with high structural flatness and uniform structural distribution is left, and the tab and the round angle at the joint of the tab and the first section 27 are cut out on the first section 27 through the second laser lens 12, thereby improving the preparation efficiency of the battery pole piece and the quality of preparation.
Further, a dust removing part is arranged on the second portal frame 11, the dust removing part comprises a lifting cylinder 13 fixedly connected to one side, far away from the second laser lens 12, of the inner wall of the top end of the second portal frame 11, an adsorption cover 14 is fixedly connected to the movable end of the lifting cylinder 13 along the vertical downward extension, a light transmission window is formed in the adsorption cover 14 corresponding to the second laser lens 12, a light transmission plate 15 is fixedly connected in the light transmission window, one end of the adsorption cover 14 is communicated with an air pump 17 through a communicating pipe 16, and the air pump 17 is fixedly connected to the second portal frame 11.
Referring to fig. 1 and 2, by arranging a dust removing part, the lifting cylinder 13 is used for moving the adsorption cover 14, the adsorption cover 14 is provided with a light transmission window corresponding to the second laser lens 12, the inside of the light transmission window is blocked by the light transmission plate 15, so that the negative pressure suction effect of the air pump 17 and the communicating pipe 16 is ensured, the first section 27 coil stock is cleaned, meanwhile, the light transmission plate 15 can be made of materials such as glass and calcium fluoride, the laser cutting effect is ensured, the adsorption cover 14 is matched and attached with the machine table 1 under the action of the lifting cylinder 13, the internal environment of the adsorption cover 14 reaches a near vacuum state under the action of negative pressure suction, the positive effect is generated on laser cutting, and the preparation efficiency and quality of the battery pole pieces are further improved;
it can be understood that when the second laser lens 12 performs cutting, the lifting cylinder 13 descends the adsorption cover 14 and simultaneously starts the air pump 17, one end of the communicating pipe 16 extends into the adsorption cover 14 through the lifting cylinder 13 and is communicated with the adsorption cover 14, the other end of the communicating pipe is communicated with the air pump 17 and is led out of the machine table 1, after the adsorption cover 14 is attached to the machine table 1, a negative pressure vacuum environment is formed while impurity dust is cleaned, and in-process material conveying pieces are kept to stop, so that the cutting operation effect is guaranteed.
Further, the cutting mechanism comprises two guide plates 18 fixedly connected to two sides of the machine 1 relatively, two ends of a fixing plate 19 are fixedly connected to the top surfaces of the two guide plates 18 respectively, a hydraulic device 20 is arranged on the fixing plate 19, a cutting plate 22 is fixedly connected to the fixing plate 19 in a vertically downward penetrating mode through a hydraulic rod 21 of the hydraulic device 20, a cutter 23 is fixedly connected to the bottom surface of the cutting plate 22, a plurality of guide rods 24 are vertically arranged around the fixing plate 19, two ends of the guide rods 24 are fixedly connected with the fixing plate 19 and the machine 1 respectively, and the guide rods 24 penetrate through the cutting plate 22 and are in sliding connection with the cutting plate 22.
Further, the material conveying part comprises a conveying belt 25 movably connected to the top surface of the machine table 1, a feeding plate 26 is arranged on the top surface of the conveying belt 25, and a positioning groove is formed in the joint of the top surface of the feeding plate 26 corresponding to the first section 27 and the second section 28;
wherein the image acquisition unit 3 is used for controlling the conveying direction of the conveyor belt 25.
The conveyor belt 25 is preferably, but not limited to, a common drum type, a chain plate type, and a belt type conveyor line, the conveyor belt 25 is utilized to move the feeding plate 26 to move the coiled material, and it is conceivable that the battery pole piece is cut into a part of the whole battery pole piece preparation process in the technical scheme, so that the part of the conveyor belt 25 extending out of the machine table 1 can adopt a circulating transportation mode or a production line transportation mode to carry out the transportation of the coiled material in the whole preparation process, and the transportation direction of the conveyor belt 25 can be directly controlled by the image acquisition unit 3, and the image acquisition unit 3 can control the transportation direction of the conveyor belt 25 through the controller, so that the prior art does not make excessive statements.
A high-quality lithium battery pole piece laser cutting method based on a high-quality lithium battery pole piece laser cutting device comprises the following steps:
rolling the coil stock by a first press roller 201 and a second press roller 202 which are separately arranged on the two rollers 2 to form a first section 27 and a second section 28;
dividing the first section 27 and the second section 28 by a first laser cutting unit;
cutting the electrode lugs and the fillets at the joints of the electrode lugs and the first section 27 on the edges of the two sides of the first section 27 by using a second laser cutting unit;
detecting the cutting condition of the tab and the fillet by the image acquisition unit 3, wherein when the cutting is unqualified, the image acquisition unit 3 controls the material conveying piece to move the coiled material for repeated cutting, and when the cutting is qualified, the coiled material book is conveyed to the cutting mechanism;
and (5) sectionally cutting the first section 27 coiled material cut with the tab by a cutting mechanism to finish the preparation of the battery pole piece.
Through placing the coil stock to be cut on the delivery plate 26 and sequentially conveying the coil stock along the directions of the roller 2, the first laser unit, the second laser unit and the cutting mechanism by the conveying belt 25, rolling the coil stock by utilizing the two rollers 2 and forming a first section 27 and a second section 28, dividing the second section 28 by the first laser cutting unit, cutting out the tab and the round angle on the first section 27 by the second laser cutting unit, detecting the cutting completion degree of the first section 27 by a camera or an industrial camera, and then conveying the qualified coil stock in the first section 27 into the cutting mechanism for segmented cutting.
In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. A high-quality lithium battery pole piece laser cutting device is characterized in that: comprising the steps of (a) a step of,
the machine table (1), the machine table (1) is sequentially provided with a rolling mechanism, a first laser cutting unit, a second laser cutting unit, an image acquisition unit (3) and a cutting mechanism along the feeding direction;
the material conveying piece is arranged on the machine table (1) and is used for conveying coiled materials along the material conveying direction;
the rolling mechanism comprises two oppositely arranged rollers (2), the two rollers (2) are matched to press the coil stock roller out of a first section (27) and a second section (28), the second section (28) is distributed on two sides of the first section (27), and structural faults exist between the first section (27) and the second section (28);
the first laser cutting unit is used for separating the second interval (28);
the second laser cutting unit is used for cutting out a tab and a round angle at the joint of the tab and the first section (27) on the first section (27);
the image acquisition unit (3) is used for detecting the cutting completion degree of the first section (27), and the image acquisition unit (3) is in signal connection with the material conveying part;
the cutting mechanism is used for sectionally cutting the cut first section (27).
2. The high quality lithium battery pole piece laser cutting device of claim 1, wherein: the roller (2) is respectively provided with a leveling part and two limiting parts, wherein the two limiting parts are arranged on two sides of the leveling part, the first section (27) is formed by matching the leveling parts by two, the second section (28) is formed by matching the limiting parts by four opposite positions of the coil stock, and a drop gap is arranged between the limiting parts and the leveling parts.
3. The high quality lithium battery pole piece laser cutting device of claim 2, wherein: the leveling part comprises a first press roller (201) which is connected to the machine table (1) in a switching mode, two ends of the first press roller (201) are fixedly connected with second press rollers (202) respectively, the shaft diameter of the first press roller (201) is smaller than that of the second press roller (202), the second press roller (202) is a limiting part, a first driving assembly is arranged on the machine table (1) corresponding to the second press roller (202), and the output end of the first driving assembly is connected with the second press roller (202).
4. A high quality lithium battery pole piece laser cutting device as set forth in claim 3, wherein: the first driving assembly comprises supporting seats (4) fixedly connected to two sides of the machine table (1), the rollers (2) are erected between the supporting seats (4), lifting pieces are arranged on the supporting seats (4), lifting ends of the lifting pieces are connected with mounting seats (7), the mounting seats (7) are limited and slidingly connected to the supporting seats (4), empty slots are formed in the mounting seats (7), first motors (5) are fixedly connected in the empty slots, and output shafts of the first motors (5) extend out of the mounting seats (7) and are fixedly connected with second press rollers (202).
5. The high quality lithium battery pole piece laser cutting device of claim 4, wherein: the lifting part comprises an oil cylinder (6) fixedly connected to the top surface of the supporting seat (4), a sliding groove is formed in the supporting seat (4), one end of the mounting seat (7) is limited and slidably connected to the sliding groove, the movable end of the oil cylinder (6) stretches into the supporting seat (4) to be fixedly connected to the top surface of the mounting seat (7), one end of a damper (8) is fixedly connected to the bottom surface of the mounting seat (7), and the other end of the damper (8) is fixedly connected to the machine table (1).
6. The high quality lithium battery pole piece laser cutting device of claim 1, wherein: the first laser cutting unit comprises a first portal frame (9) fixedly connected to the machine table (1), first laser lenses (10) are respectively arranged on two sides of the inner wall of the top end of the first portal frame (9), and the first laser lenses (10) face to the joint of the first section (27) and the second section (28);
the second laser cutting unit comprises a second portal frame (11) fixedly connected to the machine table (1), second laser lenses (12) are respectively arranged on two sides of the inner wall of the top end of the second portal frame (11), and the second laser lenses (12) face to two side edges of the first section (27).
7. The high quality lithium battery pole piece laser cutting device of claim 6, wherein: be provided with dust removal spare on second portal frame (11), dust removal spare is including the rigid coupling is in second portal frame (11) top inner wall is kept away from lift cylinder (13) of second laser lens (12) one side, the expansion end of lift cylinder (13) has absorption cover (14) along vertical downwardly extending rigid coupling, absorption cover (14) correspond light-transmitting window has been seted up to second laser lens (12), the rigid coupling has light-transmitting plate (15) in the light-transmitting window, the one end of absorption cover (14) is passed through communicating pipe (16) and is linked together with air pump (17), air pump (17) rigid coupling is in on second portal frame (11).
8. The high quality lithium battery pole piece laser cutting device of claim 1, wherein: the utility model provides a cutting mechanism includes two relative rigid couplings guide plate (18) of board (1) both sides, two the top surface of guide plate (18) rigid coupling has the both ends of fixed plate (19) respectively, be provided with hydraulic press (20) on fixed plate (19), hydraulic stem (21) of hydraulic press (20) vertically run through downwards fixed plate (19) rigid coupling has cutting board (22), the bottom surface rigid coupling of cutting board (22) has cutter (23), fixed plate (19) are all around vertically to be provided with a plurality of guide bars (24), the both ends of guide bar (24) respectively with fixed plate (19) with board (1) rigid coupling, a plurality of guide bars (24) run through cutting board (22) with cutting board (22) sliding connection.
9. The high quality lithium battery pole piece laser cutting device of claim 1, wherein: the conveying part comprises a conveying belt (25) movably connected to the top surface of the machine table (1), a feeding plate (26) is arranged on the top surface of the conveying belt (25), and a positioning groove is formed in the joint of the top surface of the feeding plate (26) corresponding to the first section (27) and the second section (28);
wherein the image acquisition unit (3) is used for controlling the conveying direction of the conveying belt (25).
10. The high-quality lithium battery pole piece laser cutting method based on the high-quality lithium battery pole piece laser cutting device of claim 1 is characterized by further comprising the following steps:
rolling the coil stock by two rollers (2);
dividing the first section (27) and the second section (28) using a first laser cutting unit;
cutting out the electrode lug and a round angle at the joint of the electrode lug and the first section (27) on the edges of the two sides of the first section (27) by using a second laser cutting unit;
detecting cutting conditions of the lugs and the fillets through the image acquisition unit (3), wherein when the cutting is unqualified, the image acquisition unit (3) controls the material conveying part to move the coiled material for repeated cutting, and when the cutting is qualified, the coiled material book is conveyed to the cutting mechanism;
and (3) sectionally cutting the coiled material of the first section (27) cut with the tab by a cutting mechanism to finish the preparation of the battery pole piece.
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| CN202410015494.4A CN117506172B (en) | 2024-01-05 | 2024-01-05 | High-quality lithium battery pole piece laser cutting device and method |
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| CN202410015494.4A CN117506172B (en) | 2024-01-05 | 2024-01-05 | High-quality lithium battery pole piece laser cutting device and method |
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| CN117506172B CN117506172B (en) | 2024-04-23 |
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|---|---|
| CN117506172B (en) | 2024-04-23 |
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