CN110931889A - Winding method for cylindrical shell of lithium battery - Google Patents
Winding method for cylindrical shell of lithium battery Download PDFInfo
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- CN110931889A CN110931889A CN201911346007.8A CN201911346007A CN110931889A CN 110931889 A CN110931889 A CN 110931889A CN 201911346007 A CN201911346007 A CN 201911346007A CN 110931889 A CN110931889 A CN 110931889A
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- material belt
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- 238000004804 winding Methods 0.000 title claims abstract description 212
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 48
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 124
- 230000007246 mechanism Effects 0.000 claims abstract description 107
- 238000003825 pressing Methods 0.000 claims abstract description 96
- 238000005520 cutting process Methods 0.000 claims abstract description 55
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 52
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000006835 compression Effects 0.000 claims description 16
- 238000007906 compression Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000004411 aluminium Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000005486 organic electrolyte Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
-
- 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
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention relates to a winding method of a lithium battery cylinder shell, in particular to a winding device of the lithium battery cylinder shell, which specifically comprises a device platform, a material belt conveying mechanism for conveying and guiding aluminum material belts, a double-roller guide mechanism for conveying and guiding, a material belt cutting mechanism for cutting off the material belts, a winding forming mechanism for winding and forming the lithium battery cylinder shell and a connector pressing mechanism for cutting off the connector pressing of the material belts, wherein the material belt conveying mechanism, the material belt cutting mechanism, the double-roller guide mechanism and the winding forming mechanism are all positioned on the device platform and are sequentially arranged, the connector pressing mechanism is arranged at the bottom end of the device platform, and the connector pressing mechanism is positioned below the winding forming mechanism; the device can automatically complete the winding forming of the lithium battery cylinder shell, has high efficiency, and has simple structure, low equipment cost and convenient later maintenance.
Description
Technical Field
The invention relates to the technical field of lithium battery production and manufacturing, and particularly provides a winding method for a cylindrical shell of a lithium battery.
Background
Lithium batteries are a type of battery using a nonaqueous electrolyte solution and using a lithium metal or a lithium alloy as a negative electrode material, and can be roughly classified into two types: lithium metal batteries and lithium ion batteries. The lithium battery has the advantages of extremely low self-discharge rate, mild discharge voltage and the like, and becomes the mainstream along with the development of scientific technology.
The lithium battery mainly comprises an upper cover, a lower cover, an anode, a cathode, a diaphragm, organic electrolyte and a battery shell; the lithium cell mainly can divide into cylinder lithium cell and square lithium cell according to the shape, and wherein the used shell correspondence of cylinder lithium cell is the cylinder shell, and the shell that current cylinder lithium cell was used commonly is the aluminium shell, and in the production and processing process of aluminium shell cylinder lithium cell, the aluminium shell mainly through the mode shaping of coiling, has mainly adopted two kinds of modes to carry out the shaping, one of them at the in-process that carries out the coiling shaping: the semi-automatic equipment is used for winding manually, and the defects are that the efficiency is low and the labor cost is high; and secondly, full-automatic equipment is adopted for automatic winding forming, but the structure of the existing aluminum shell winding machine is relatively complex, the equipment cost is high, and the maintenance is inconvenient.
The invention provides a winding method of a lithium battery cylindrical shell, and mainly relates to a winding device of the lithium battery cylindrical shell.
Disclosure of Invention
In order to solve the problems, the invention provides a winding method of a lithium battery cylindrical shell, and also relates to a winding device of the lithium battery cylindrical shell, which can solve the problems in the background art.
In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: a winding method of a cylindrical shell of a lithium battery specifically comprises the following steps:
s1, adjusting the guide distance: adjusting the guiding distance of the double-roller guiding mechanism according to the width of the aluminum material belt which is used for winding and forming the cylindrical shell;
s2, conveying the material belt: discharging the aluminum material strip coil, and then conveying the discharged aluminum material strip through a material strip conveying mechanism;
s3, conveying and correcting: guiding the aluminum material belt conveyed in the step S2 through a double-roller guide mechanism to ensure that side lines of the cylindrical shell formed by winding are flush and no misalignment occurs;
s4, pressing the end: pressing the aluminum material belt conveyed and guided in the step S3 into a pressing groove of a winding roller through a joint pressing mechanism;
s5, cutting the material belt: stopping conveying the aluminum material belt after the end is compressed in the step S4, and cutting the aluminum material belt through a material belt cutting mechanism to obtain the aluminum material required by the winding forming of the cylinder shell;
s6, winding and forming: winding and forming the aluminum material cut off in the step S5 by a winding and forming mechanism so that the aluminum material is wound on a winding roller;
s7, joint pressing: pressing the joints at the two ends of the aluminum material wound on the winding roller obtained in the step S6 through a joint pressing mechanism until the winding of the cylinder shell is finished;
s8, returning: withdrawing the cylindrical shell completed with the winding in the step S7 from the winding roll;
the lithium battery cylindrical shell winding method adopting the steps S1-S8 further specifically relates to a lithium battery cylindrical shell winding device in the process of winding the lithium battery cylindrical shell, which specifically comprises a device platform, a material strip conveying mechanism for conveying an aluminum material strip, a double-roller guide mechanism for conveying and guiding, a material strip cutting mechanism for cutting off the material strip, a winding forming mechanism for winding and forming the lithium battery cylindrical shell and a joint pressing mechanism for cutting off the material strip and joint pressing, wherein the material strip conveying mechanism, the material strip cutting mechanism, the double-roller guide mechanism and the winding forming mechanism are all located on the device platform and are sequentially arranged, the joint pressing mechanism is arranged at the bottom end of the device platform, and the joint pressing mechanism is located below the winding forming mechanism, wherein:
the winding forming mechanism comprises a winding motor, two rotating support frames, a winding executing shaft, two winding rollers and three winding guide rollers, the winding motor is fixedly arranged at the bottom end of the device platform through a motor fixing plate, a driving gear is arranged on an output shaft of the winding motor, the two rotating support frames are parallelly arranged and fixedly arranged on the upper end surface of the device platform, a rectangular avoiding hole is formed between the two rotating support frames on the device platform, the winding executing shaft is rotatably arranged on the two rotating support frames, a driven gear is arranged between the two rotating support frames on the winding executing shaft, the driven gear extends into the avoiding hole to be meshed with the driving gear, one end of the winding executing shaft penetrates through one of the rotating support frames close to the double-roller guide mechanism and extends outwards, the two winding rollers are fixedly installed on the extending part of the winding execution shaft in an embedded mode, the three winding guide rollers are installed on the two rotating support frames in a rotating mode, one winding guide roller is located right above the two winding rollers, the central shafts of the other two winding guide rollers and the central shafts of the winding rollers are located on the same horizontal plane, the two winding guide rollers are distributed on two sides of the two winding rollers, and gaps between the three winding guide rollers and the winding rollers are equal;
the connector pressing mechanism comprises a fixed plate fixedly arranged at the bottom of the device platform, a pressing air cylinder fixedly arranged at the bottom end of the fixed plate, a stroke plate fixedly arranged at the output end of the pressing air cylinder, a plurality of guide rods fixedly arranged at the upper end of the fixed plate and a pressing contact strip fixedly arranged at the upper end of the stroke plate and matched with the pressing grooves, the stroke plate is slidably arranged on the guide rods, the pressing contact strip is positioned under the winding rollers, the pressing contact strip is arranged along the axial direction of the winding rollers, and two ends of the pressing contact strip correspondingly extend to the outer sides of the two winding rollers.
Preferably, the upper end of the device table is provided with two roller frames, the material belt conveying mechanism comprises a plurality of conveying rollers, a transmission chain and a conveying motor which are uniformly arranged along a horizontal straight line and rotatably installed on the two roller frames, all the conveying rollers are positioned on the outer side shaft end of one of the roller frames and are provided with chain wheels, the transmission chain teeth are meshed with all the chain wheels, the conveying motor is fixedly installed on the side wall of the device table, and the output shaft of the conveying motor is fixedly connected with one of the chain wheels.
Preferably, the double-roller guide mechanism comprises two guide compression rollers, four wedge-shaped guide rings and four sheet-type guide rings, four sliding grooves axially extending to two ends are distributed on the cylindrical surface of each guide compression roller relative to the central shaft in an annular array manner, and the two guide compression rollers are positioned on the same horizontal plane; one of the guide compression rollers is fixedly installed between the two roller frames, the guide compression roller is close to the conveying roller, the four wedge-shaped guide rings are all installed on the sliding groove of the guide compression roller in a sliding mode, the wedge surfaces of the wedge-shaped guide rings are vertical to the horizontal plane, the wedge surfaces of the two wedge-shaped guide rings located on the outer side are respectively arranged opposite to the mirror images of the wedge surfaces of the adjacent wedge-shaped guide rings, and the size of an opening between the two wedge surfaces of the two wedge-shaped guide rings arranged in the mirror images is gradually reduced along the conveying direction of the material belt; the other guide press roller is rotatably arranged on the two roller frames, and the four sheet-type guide rings are slidably arranged on the sliding grooves of the guide press roller.
Preferably, the material belt cutting mechanism is located between the adjacent conveying roller and the guide compression roller, the material belt cutting mechanism comprises a cross beam frame, two cutting cylinders vertically and fixedly installed at the top end of the cross beam frame and two cutting knives fixedly installed at the output ends of the two cutting cylinders, the cross beam frame spans the top ends of the two roller frames and is fixedly installed below the cross beam frame, the cutting knives are perpendicular to the material belt conveying direction, and the device bench is located under the cutting knives.
Preferably, the winding execution shaft is provided with an embedded groove extending to the end part along the axial direction on the extending part, and the two ends of the winding roller are provided with fixing heads fixedly installed in the embedded groove.
The technical scheme has the following advantages or beneficial effects:
the invention provides a lithium battery cylinder shell winding method, which relates to a lithium battery cylinder shell winding device, wherein an arranged material belt conveying mechanism can automatically feed materials, an arranged double-roller guide mechanism adopts two-roller guide to realize material belt conveying and guiding, the side line of a cylinder shell formed by winding is flush and not staggered, an arranged material belt cutting mechanism can cut off the material belt in the working process of material belt conveying and winding to obtain a required material belt sheet, the end head of the material belt sheet can be pressed through an arranged joint pressing mechanism, so that the winding forming mechanism can automatically complete the winding forming, the joint of the wound cylinder material belt can be pressed through the joint pressing mechanism, the cylinder shell formed by winding is kept cylindrical, the subsequent laser welding is facilitated, all the mechanisms in the device are mutually coordinated and matched, and the winding forming of the lithium battery cylinder shell can be automatically completed, high efficiency, simple structure of the whole device, low equipment cost and convenient later maintenance and repair.
Drawings
The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings. The drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.
Fig. 1 is a schematic perspective view of a lithium battery cylindrical shell winding device provided by the present invention at one of viewing angles;
fig. 2 is a schematic perspective view of a lithium battery cylindrical shell winding device provided by the present invention from another perspective view;
FIG. 3 is a top view of a lithium battery cylindrical shell winding device provided by the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is a cross-sectional view B-B of FIG. 3;
FIG. 6 is an enlarged partial schematic view at C of FIG. 3;
FIG. 7 is an enlarged partial schematic view at D of FIG. 4;
fig. 8 is a partially enlarged schematic view at E in fig. 5.
In the figure: 1. a device table; 11. a roller frame; 12. avoiding holes; 13. a position avoiding groove; 14. opening the avoiding position; 2. a material belt conveying mechanism; 21. a conveying roller; 211. a sprocket; 22. a drive chain; 23. a conveying motor; 3. a double-roller guide mechanism; 31. a guide press roll; 311. a chute; 32. a wedge-shaped guide ring; 33. a plate-type guide ring; 4. a material belt cutting mechanism; 41. a cross beam frame; 42. cutting off the air cylinder; 43. a cutting knife; 5. a winding forming mechanism; 51. a winding motor; 511. a drive gear; 52. rotating the support frame; 53. winding the executing shaft; 531. a driven gear; 532. caulking grooves; 54. a winding roller; 541. a fixed head; 542. a pressing groove; 55. winding the guide roll; 6. a joint press-fit mechanism; 61. a fixing plate; 62. pressing a cylinder; 63. a stroke plate; 64. a guide bar; 65. and pressing the contact strips.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.
Referring to fig. 1-8, a winding method of a cylindrical shell of a lithium battery specifically includes the following steps:
s1, adjusting the guide distance: the guiding distance of the double-roller guiding mechanism 3 is adjusted according to the width of the aluminum material belt which is used for winding and processing into the cylindrical shell;
s2, conveying the material belt: discharging the aluminum material strip coil, and then conveying the discharged aluminum material strip through the material strip conveying mechanism 2;
s3, conveying and correcting: guiding the aluminum material belt conveyed in the step S2 through a double-roller guide mechanism 3 to ensure that side lines of the cylindrical shell formed by winding are flush and no misalignment occurs;
s4, pressing the end: pressing the aluminum strip conveyed and guided in the step S3 into the pressing groove 542 of the winding roller 54 through the joint pressing mechanism 6;
s5, cutting the material belt: stopping conveying the aluminum material belt after the end is compressed in the step S4, and cutting the aluminum material belt through the material belt cutting mechanism 4 to obtain the aluminum material required by the winding forming of the cylinder shell;
s6, winding and forming: winding the aluminum material cut in step S5 by the winding mechanism 5 so that the aluminum material is wound around the winding roller 54;
s7, joint pressing: pressing the joints at the two ends of the aluminum material wound on the winding roller 54 obtained in the step S6 through the joint pressing mechanism 6, so that the winding of the cylinder shell is completed;
s8, returning: the cylindrical shell obtained by the winding completion in step S7 is removed from the winding roller 54;
the lithium battery cylinder shell winding method adopting the steps S1-S8 further specifically relates to a lithium battery cylinder shell winding device in the process of winding the lithium battery cylinder shell, which specifically comprises a device platform 1, a material belt conveying mechanism 2 for conveying an aluminum material belt, a double-roller guide mechanism 3 for conveying and guiding, a material belt cutting mechanism 4 for cutting the material belt, a winding forming mechanism 5 for winding and forming the lithium battery cylinder shell and a joint pressing mechanism 6 for cutting off the material belt and joint pressing, wherein the material belt conveying mechanism 2, the material belt cutting mechanism 4, the double-roller guide mechanism 3 and the winding forming mechanism 5 are all located on the device platform 1 and are sequentially arranged, the joint pressing mechanism 6 is arranged at the bottom end of the device platform 1, and the joint pressing mechanism 6 is located below the winding forming mechanism 5, wherein:
the winding forming mechanism 5 comprises a winding motor 51, two rotating support frames 52, a winding executing shaft 53, two winding rollers 54 and three winding guide rollers 55, wherein the winding motor 51 is fixedly arranged at the bottom end of the device platform 1 through a motor fixing plate 61, a driving gear 511 is arranged on an output shaft of the winding motor 51, the two rotating support frames 52 are parallelly arranged, welded and fixedly arranged on the upper end surface of the device platform 1, a rectangular avoiding hole 12 is arranged between the two rotating support frames 52 on the device platform 1, the winding executing shaft 53 is rotatably arranged on the two rotating support frames 52, a driven gear 531 is arranged between the two rotating support frames 52 on the winding executing shaft 53, the driven gear 531 extends into the avoiding hole 12 to be meshed with the driving gear 511, one end of the winding executing shaft 53 penetrates through one of the rotating support frames 52 close to the double-roller guide mechanism 3 and extends outwards, the two winding rollers 54 are fixedly arranged on the extending part of the winding, the three winding guide rollers 55 are rotatably mounted on the two rotating support frames 52, wherein one winding guide roller 55 is positioned right above the two winding rollers 54, the central axes of the other two winding guide rollers 55 and the central axis of the winding roller 54 are positioned on the same horizontal plane, the two winding guide rollers 55 are distributed on two sides of the two winding rollers 54, and the gaps between the three winding guide rollers 55 and the winding rollers 54 are equal;
after the material belt is cut off to obtain the aluminum material required for the winding and forming of the cylindrical shell (the device can simultaneously perform the forming of two cylindrical shells, so that two material belts are conveyed and two aluminum materials are correspondingly cut off), the winding and forming mechanism 5 can perform the winding and forming, specifically, after the winding motor 51 is started, the driving gear 511 positioned on the output shaft drives the driven gear 531 meshed with the driving gear to drive the winding execution shaft 53 to rotate, the two winding rollers 54 rotate along with the rotation, so that the winding rollers 54 drive the cut aluminum material to complete the winding and forming, and the three winding guide rollers 55 play roles of auxiliary guiding and pressing in the process of winding the aluminum material, so that the wound aluminum material is attached to the roller surface of the winding rollers 54; it should be noted that the gap between the lower horizontal tangent plane of the winding roller 54 and the upper end plane of the assembly table 1 is slightly larger than the thickness of the aluminum material, so that the winding roller 54 can rotate while completing winding.
The cylindrical surface of the winding roller 54 is provided with a pressing groove 542 along the axial direction, the pressing grooves 542 of the two winding rollers 54 fixedly arranged on the winding execution shaft 53 are overlapped under the axial visual angle of the winding execution shaft 53 (namely, the two winding rollers 54 are arranged and arranged along the axial direction), the joint pressing mechanism 6 comprises a fixed plate 61 fixedly arranged at the bottom of the device platform 1 by welding, a pressing air cylinder 62 fixedly arranged at the bottom end of the fixed plate 61 by bolts, a stroke plate 63 fixedly arranged at the output end of the pressing air cylinder 62 by bolts, four guide rods 64 fixedly arranged at the upper end of the fixed plate 61 by welding and a pressing contact bar 65 fixedly arranged at the upper end of the stroke plate 63 and matched with the pressing groove 542, the four guide rods 64 are uniformly distributed in a rectangular shape by taking the pressing air cylinder 62 as the center, the stroke plate 63 is slidably arranged on the four guide rods 64, the pressing contact bar 65 is positioned under the winding roller 54 (the position of the device platform 1 between the pressing contact bar 65 and, the pressing contact strip 65 can extend into the clearance opening 14), the pressing contact strip 65 is arranged along the axial direction of the winding rollers 54, and two ends of the pressing contact strip 65 correspondingly extend to the outer sides of the two winding rollers 54 (ensuring that the pressing contact strip 65 can completely cover the pressing grooves 542 of the two winding rollers 54).
It should be noted that, in the present apparatus, the winding motor 51 is specifically an electromagnetic braking servo motor, the winding execution shaft 53 and the winding roller 54 mounted thereon enable the pressing groove 542 to vertically face the pressing contact strip 65 downward in the assembling process, the output shaft of the winding motor 51 only rotates for one circle in each winding process to brake and stop, so that the pressing groove 542 is always opposite to the pressing contact strip 65 after each winding is completed; the joint pressing mechanism 6 mainly performs two actions, one is to perform the step S4 to press the end (the aluminum material belt conveyed and guided in the step S3 is pressed in the pressing groove 542 of the winding roller 54 by the joint pressing mechanism 6), and the other is to perform the step S7 to perform joint pressing (the joint pressing mechanism 6 presses the joints at the two ends of the aluminum material wound on the winding roller 54 obtained in the step S6), the executing actions of the joint pressing mechanism 6 during the steps S4 and S7 are that the pressing cylinder 62 pushes the stroke plate 63 to move vertically upward along the guide rod 64, and the pressing contact bar 65 moves upward along with the stroke plate 63 synchronously, so that the pressing contact bar 65 presses the end of the material belt in the pressing groove 542 or presses the end of the wound aluminum material at the position of the pressing groove 542.
Further, the upper end of the device platform 1 is welded with two roller frames 11, the material belt conveying mechanism 2 comprises five conveying rollers 21, a transmission chain 22 and a conveying motor 23 which are uniformly arranged along a horizontal straight line and rotatably mounted on the two roller frames 11, all the conveying rollers 21 are positioned on the outer side shaft end of one of the roller frames 11 and are provided with chain wheels 211, the transmission chain 22 is meshed with all the chain wheels 211, the conveying motor 23 is fixedly mounted on the side wall of the device platform 1, and the output shaft of the conveying motor 23 is fixedly connected with one chain wheel 211 positioned on the outermost side.
In order to ensure that the conveying rollers 21 can normally convey, the gap between the horizontal tangent plane at the lower end of the conveying rollers 21 and the upper end surface of the device platform 1 is slightly larger than the thickness of the aluminum material belt, in the specific conveying process, after the conveying motor 23 is started, the conveying motor drives the chain wheel 211 connected with the conveying motor to rotate, and under the driving of the transmission chain 22, the five conveying rollers 21 synchronously rotate, and then the five conveying rollers 21 drive the material belt to convey forwards.
Furthermore, the twin-roll guiding mechanism 3 comprises two guiding press rolls 31, four wedge-shaped guiding rings 32 and four sheet-type guiding rings 33, four sliding grooves 311 extending to two ends along the axial direction are distributed on the cylindrical surface of the guiding press roll 31 in an annular array relative to the central axis, and the two guiding press rolls 31 are positioned on the same horizontal plane; one of the guide compression rollers 31 is fixedly installed between the two roller frames 11, the guide compression roller 31 is close to the conveying roller 21, the four wedge-shaped guide rings 32 are all slidably installed on a sliding groove 311 of the guide compression roller 31, wedge surfaces of the wedge-shaped guide rings 32 are vertical relative to the horizontal plane, the wedge surfaces of the two wedge-shaped guide rings 32 located on the outer side are respectively arranged opposite to the wedge surfaces of the adjacent wedge-shaped guide rings 32 in a mirror image mode, and the size of an opening between the wedge surfaces of the two wedge-shaped guide rings 32 arranged in the mirror image mode is gradually reduced along the conveying direction of the material belt; the other guide pressure roller 31 is rotatably mounted on the two roller frames 11, and the four sheet-type guide rings 33 are slidably mounted on the slide grooves 311 of the guide pressure roller 31.
The guiding distance adjustment can be carried out according to the width of the material belt, specifically, the wedge-shaped guide rings 32 and the sheet-type guide rings 33 can be slidably adjusted, so that the adjusted wedge-shaped guide rings 32 and the adjusted sheet-type guide rings 33 correspond to the conveying direction of the material belt one to one, the distance between the two sheet-type guide rings 33 positioned on the outer side and the adjacent sheet-type guide rings 33 is basically equal to the width of the material belt, the minimum distance between the two wedge-shaped guide rings 32 positioned on the outer side and the adjacent wedge-shaped guide rings 32 is basically equal to the width of the material belt, the conveyed material belt passes through the lower ends of the two guide compression rollers 31, the distance between the two wedge-shaped guide rings 32 is gradually reduced to realize the first wheel guiding, the sheet-type guide rings 33 can perform the second wheel guiding, so that the material belt guiding can be realized after the two wheel guiding, thereby the edge lines of, the possibility of side line dislocation does not exist; in addition, the guide compression roller 31 can flatten the end of the cut material belt, so that the tiny curl generated at the end of the cut material belt can be corrected.
Further, the material strip cutting mechanism 4 is located between the adjacent conveying rollers 21 and the guiding pressing roller 31, the material strip cutting mechanism 4 comprises a cross beam frame 41, two cutting cylinders 42 vertically and fixedly installed at the top ends of the cross beam frame 41 through bolts, and cutting knives 43 fixedly installed at the output ends of the two cutting cylinders 42, the cross beam frame 41 spans and is fixedly installed at the top ends of the two roller frames 11, the cutting knives 43 are located below the cross beam frame 41, the cutting knives 43 are perpendicular to the material strip conveying direction, and the avoidance grooves 13 are located right below the cutting knives 43 on the device table 1.
After the end of the material belt is compressed, the material belt is suspended to be conveyed, and then the two cutting cylinders 42 drive the cutting knife 43 to cut the material belt, so that the aluminum material for winding and forming the cylinder shell is obtained after cutting.
Further, a caulking groove 532 extending to an end in an axial direction is provided on an extension portion of the winding execution shaft 53, and both ends of the winding roller 54 are provided with fixing heads 541 fixedly installed in the caulking groove 532 by bolts. The winding roller 54 can be assembled and disassembled quickly, the winding roller 54 can be positioned and installed quickly, and the consistency of the relative installation positions of the two winding rollers 54 is ensured.
Those skilled in the art will appreciate that variations may be implemented by those skilled in the art in combination with the prior art and the above-described embodiments, and will not be described in detail herein. Such variations do not affect the essence of the present invention and are not described herein.
The above description is of the preferred embodiment of the invention. It is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; it will be understood by those skilled in the art that various changes and modifications may be made, or equivalents may be modified, without departing from the spirit of the invention. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.
Claims (5)
1. A winding method of a lithium battery cylinder shell is characterized by comprising the following steps: the winding method specifically comprises the following steps:
s1, adjusting the guide distance: the guiding distance of the double-roller guiding mechanism (3) is adjusted according to the width of the aluminum material belt which is used for winding and processing into the cylindrical shell;
s2, conveying the material belt: discharging the aluminum material strip coil, and then conveying the discharged aluminum material strip through a material strip conveying mechanism (2);
s3, conveying and correcting: guiding the aluminum material belt conveyed in the step S2 through a double-roller guide mechanism (3) to ensure that side lines of the cylindrical shell formed by winding are flush and no misalignment occurs;
s4, pressing the end: pressing the aluminum material belt conveyed and guided in the step S3 into a pressing groove (542) of a winding roller (54) through a joint pressing mechanism (6);
s5, cutting the material belt: stopping conveying the aluminum material belt after the end is compressed in the step S4, and cutting the aluminum material belt through a material belt cutting mechanism (4) to obtain the aluminum material required by winding and forming a cylinder shell;
s6, winding and forming: winding and forming the aluminum material cut off in the step S5 by a winding and forming mechanism (5) so that the aluminum material is wound on a winding roller (54);
s7, joint pressing: pressing the joints at the two ends of the aluminum material wound on the winding roller (54) obtained in the step S6 through a joint pressing mechanism (6), so that the winding of the cylinder shell is completed;
s8, returning: withdrawing the cylindrical shell completed with the winding in the step S7 from the winding roller (54);
the lithium battery cylinder shell winding method adopting the steps S1-S8 further specifically relates to a lithium battery cylinder shell winding device in the process of winding the lithium battery cylinder shell, and the device specifically comprises a device platform (1), a material belt conveying mechanism (2) for conveying an aluminum material belt, a double-roller guide mechanism (3) for conveying and guiding, a material belt cutting mechanism (4) for cutting the material belt, a winding forming mechanism (5) for winding and forming the lithium battery cylinder shell and a connector pressing mechanism (6) for cutting the material belt connector, wherein the material belt conveying mechanism (2), the material belt cutting mechanism (4), the double-roller guide mechanism (3) and the winding forming mechanism (5) are all located on the device platform (1) and are sequentially arranged, and the connector pressing mechanism (6) is arranged at the bottom end of the device platform (1), and the joint pressing mechanism (6) is positioned below the winding forming mechanism (5), wherein:
the winding forming mechanism (5) comprises a winding motor (51), two rotating support frames (52), a winding executing shaft (53), two winding rollers (54) and three winding guide rollers (55), wherein the winding motor (51) is fixedly arranged at the bottom end of the device platform (1) through a motor fixing plate (61), a driving gear (511) is arranged on an output shaft of the winding motor (51), the two rotating support frames (52) are arranged in parallel and fixedly arranged on the upper end surface of the device platform (1), a rectangular avoiding hole (12) is arranged between the two rotating support frames (52) on the device platform (1), the winding executing shaft (53) is rotatably arranged on the two rotating support frames (52), a driven gear (531) is arranged between the two rotating support frames (52) on the winding executing shaft (53), the driven gear (531) extends into the avoiding hole (12) and is meshed with the driving gear (511), one end of the winding execution shaft (53) penetrates through one of the rotary support frames (52) close to the double-roller guide mechanism (3) and extends outwards, two winding rollers (54) are embedded and fixedly installed on the extension part of the winding execution shaft (53), three winding guide rollers (55) are installed on the two rotary support frames (52) in a rotating mode, one of the winding guide rollers (55) is located at a position directly above the two winding rollers (54), the central axes of the other two winding guide rollers (55) and the central axis of the winding roller (54) are positioned on the same horizontal plane, two winding guide rollers (55) are distributed on two sides of the two winding rollers (54), and the gaps between the three winding guide rollers (55) and the winding rollers (54) are equal;
a pressing groove (542) is formed in the cylindrical surface of each winding roller (54) along the axial direction, the pressing grooves (542) of the two winding rollers (54) fixedly mounted on the winding execution shaft (53) are overlapped under the axial view angle of the winding execution shaft (53), the joint pressing mechanism (6) comprises a fixing plate (61) fixedly mounted at the bottom of the device table (1), a pressing cylinder (62) fixedly mounted at the bottom end of the fixing plate (61), a stroke plate (63) fixedly mounted at the output end of the pressing cylinder (62), a plurality of guide rods (64) fixedly mounted at the upper end of the fixing plate (61) and a pressing contact strip (65) fixedly mounted at the upper end of the stroke plate (63) and matched with the pressing groove (542), the stroke plate (63) is slidably mounted on the plurality of guide rods (64), and the pressing contact strip (65) is positioned under the winding rollers (54), the pressing contact strips (65) are arranged along the axial direction of the winding rollers (54), and two ends of each pressing contact strip (65) correspondingly extend to the outer sides of the two winding rollers (54).
2. The method of claim 1, wherein the step of winding the cylindrical lithium battery shell comprises the steps of: the device is characterized in that two roller frames (11) are arranged at the upper end of the device platform (1), the material belt conveying mechanism (2) comprises a plurality of conveying rollers (21), a transmission chain (22) and a conveying motor (23) which are uniformly arranged along a horizontal straight line and rotatably installed on the two roller frames (11), all the conveying rollers (21) are positioned on the outer side shaft end of one of the roller frames (11) and are respectively provided with a chain wheel (211), the transmission chain (22) is meshed with all the chain wheels (211), the conveying motor (23) is fixedly installed on the side wall of the device platform (1), and the output shaft of the conveying motor (23) is fixedly connected with one of the chain wheels (211).
3. The method of claim 2, wherein the step of winding the cylindrical lithium battery casing comprises the steps of: the double-roller guide mechanism (3) comprises two guide compression rollers (31), four wedge-shaped guide rings (32) and four sheet-type guide rings (33), four sliding grooves (311) extending to two ends along the axial direction are distributed on the cylindrical surface of each guide compression roller (31) in an annular array relative to a central shaft, and the two guide compression rollers (31) are positioned on the same horizontal plane; one of the guide pressing rollers (31) is fixedly installed between the two roller frames (11), the guide pressing roller (31) is close to the conveying roller (21), the four wedge-shaped guide rings (32) are all installed on the sliding groove (311) of the guide pressing roller (31) in a sliding mode, the wedge surfaces of the wedge-shaped guide rings (32) are vertical to the horizontal plane, the wedge surfaces of the two wedge-shaped guide rings (32) located on the outer side are respectively arranged opposite to the mirror images of the wedge surfaces of the adjacent wedge-shaped guide rings (32), and the size of an opening between the wedge surfaces of the two mirror-image wedge-shaped guide rings (32) is gradually reduced along the conveying direction of the material belt; the other guide pressing roller (31) is rotatably arranged on the two roller frames (11), and the four sheet-type guide rings (33) are slidably arranged on the sliding grooves (311) of the guide pressing roller (31).
4. The method of claim 3, wherein the step of winding the cylindrical lithium battery casing comprises the steps of: the material belt cutting mechanism (4) is located adjacently the conveying roller (21) with between the direction compression roller (31), material belt cutting mechanism (4) includes crossbeam frame (41), two vertical fixed mounting be in the cutting off cylinder (42) and the fixed mounting on crossbeam frame (41) top are two cutting off sword (43) of cutting off cylinder (42) output, crossbeam frame (41) span fixed mounting be two the top of roller frame (11), cutting off sword (43) are located the below of crossbeam frame (41), just cutting off sword (43) are relative the material belt direction of delivery is perpendicular, be located on device platform (1) be equipped with under cutting off sword (43) and keep away position groove (13).
5. The method of claim 1, wherein the step of winding the cylindrical lithium battery shell comprises the steps of: the winding execution shaft (53) is provided with a caulking groove (532) extending to the end part along the axial direction on the extending part, and the two ends of the winding roller (54) are provided with fixing heads (541) fixedly installed in the caulking groove (532).
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Denomination of invention: A winding method for cylindrical shell of lithium battery Effective date of registration: 20221205 Granted publication date: 20210105 Pledgee: Industrial and Commercial Bank of China Limited Guangchang Sub branch Pledgor: JIANGXI CANHUI NEW ENERGY TECHNOLOGY CO.,LTD. Registration number: Y2022980025048 |