CN110890582A - Lamination device and lamination method - Google Patents
Lamination device and lamination method Download PDFInfo
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- CN110890582A CN110890582A CN201911175309.3A CN201911175309A CN110890582A CN 110890582 A CN110890582 A CN 110890582A CN 201911175309 A CN201911175309 A CN 201911175309A CN 110890582 A CN110890582 A CN 110890582A
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- pole piece
- lamination
- clamping mechanism
- diaphragm
- lamination platform
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0431—Cells with wound or folded electrodes
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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
- H01M10/04—Construction or manufacture in general
- H01M10/045—Cells or batteries with folded plate-like electrodes
-
- 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
- H01M10/04—Construction or manufacture in general
- H01M10/0459—Cells or batteries with folded separator between plate-like electrodes
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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
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/005—Devices for making primary cells
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- 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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- 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
Abstract
The application discloses a lamination device and a lamination method. The lamination device includes: a lamination platform; the membrane unwinding mechanism is used for conveying the membrane towards the lamination platform through the transition roller; the positioning assembly is used for respectively positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of the diaphragm at the feeding station; the first clamping mechanism is used for clamping the positioned first pole piece and the second pole piece with the diaphragm between the first pole piece and the second pole piece; and the driving assembly is used for driving the first clamping mechanism to move to the lamination platform, so that the first clamping mechanism moves the first pole piece, the second pole piece and the diaphragm between the first pole piece and the second pole piece to be right above the lamination platform and the second pole piece is close to the lamination platform. According to the lamination device, the first pole piece and the second pole piece are respectively positioned on the upper surface and the lower surface of the diaphragm, and then the first pole piece and the second pole piece which are positioned are clamped with the diaphragm between the first pole piece and the second pole piece and are moved to the position right above the lamination platform, so that the lamination efficiency is improved.
Description
Technical Field
The application belongs to the technical field of battery processing, and particularly relates to a lamination device and a lamination method for performing lamination operation on a positive plate, a negative plate and a diaphragm.
Background
The positive plate, the negative plate and the diaphragm of the battery are required to be laminated in the battery processing and manufacturing process. The existing lamination method mostly adopts a Z-shaped lamination method, and is basically formed by stacking a negative plate, a diaphragm and a positive plate from bottom to top in a Z shape.
However, in the Z-type lamination method, since the negative electrode plates and the positive electrode plates need to be sequentially fed to the lamination platform, the lamination speed is slow, and the lamination efficiency of the battery core is affected.
Disclosure of Invention
The application provides a lamination device and a lamination method, which aim to solve the technical problem of low lamination efficiency.
In order to solve the technical problem, the application adopts a technical scheme that: a lamination assembly is provided. The lamination device comprises: the lamination platform is used for carrying out lamination operation on the lamination platform; the membrane unwinding mechanism is provided with a transition roller and is used for conveying the membrane towards the lamination platform through the transition roller; the positioning assembly is used for positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of the diaphragm respectively at a feeding station between the lamination platform and the transition roller, so that the second pole piece is opposite to the first pole piece; a first clamping mechanism for clamping the positioned first and second pole pieces with a diaphragm therebetween; a drive assembly, the first clamping mechanism being mounted to a moving end of the drive assembly, the drive assembly being configured to drive the first clamping mechanism to move to the lamination platform such that the first clamping mechanism moves the first pole piece, the second pole piece, and a diaphragm therebetween directly above the lamination platform and brings the second pole piece in proximity to the lamination platform.
Optionally, the lamination device further comprises: the pressing block assembly is arranged on one side, close to the feeding station, of the lamination platform and comprises a pressing block and a pressing block driving mechanism, and the pressing block driving mechanism is used for driving the pressing block to move in the direction perpendicular to the working surface of the lamination platform and move in the direction along the width of the diaphragm.
Optionally, the first clamping mechanism comprises: the upper clamping block and the lower clamping block are arranged to be close to each other and clamp at least the front end parts of the first pole piece and the second pole piece facing the lamination platform.
Optionally, the upper clamping block and the lower clamping block both include an avoidance pressing block region, so as to avoid interference between the upper clamping block and the pressing block and interference between the lower clamping block and the pressing block when the first clamping mechanism moves to a position right above the lamination platform and is close to the lamination platform.
Optionally, the lamination device further comprises: the flattening assembly is arranged on one side, away from the feeding station, of the lamination platform and used for flattening the folded position, away from one side of the feeding station, of the diaphragm.
Optionally, the lamination device further comprises: and the lamination platform lifting mechanism is used for driving the lamination platform to ascend and descend.
Optionally, a distance between a side of the first pole piece placed on the lamination platform, which is far away from the transition roller, and a side of the first pole piece placed at the feeding station, which is far away from the transition roller, is twice as large as a width of one battery cell.
Optionally, the lamination device further comprises: a second clamping mechanism, wherein the distance between one side of the first clamping mechanism close to the lamination platform and one side of the second clamping mechanism close to the lamination platform is twice of the size of the width of one battery cell; wherein when the first clamping mechanism moves to the lamination platform, the second clamping mechanism moves to the feeding station and is used for clamping the newly fed first and second pole pieces and the separator therebetween.
In order to solve the above technical problem, another technical solution adopted by the present application is: a lamination process is provided that includes the following operations. And (3) loading operation, namely: respectively positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of a diaphragm released by a diaphragm roll at a feeding station, and enabling the second pole piece to be opposite to the first pole piece; the clamping operation, namely: clamping the positioned first and second pole pieces with a diaphragm therebetween by a first clamping mechanism; and a moving operation, namely: driving the first clamping mechanism to move toward a lamination platform such that the first clamping mechanism moves the first pole piece, the second pole piece, and a diaphragm therebetween directly over the lamination platform and the second pole piece is proximate to the lamination platform.
Optionally, before the feeding operation, the lamination method further comprises: releasing a membrane from the membrane roll by a membrane unwinding mechanism, so that the membrane is conveyed towards the lamination platform through a transition roller; placing another first pole piece on the diaphragm conveyed to the lamination platform, and pressing the another first pole piece and the diaphragm below the another first pole piece on the lamination platform through a pressing block assembly; the distance between one side of the other first pole piece on the lamination platform, which is far away from the transition roller, and one side of the first pole piece at the feeding station, which is far away from the transition roller, is the width dimension of two battery cells.
Optionally, after the moving operation, the lamination method further comprises: causing the press block assembly on the lamination platform to loosen the pressed another first pole piece and causing the press block assembly to press the first pole piece, the second pole piece and the diaphragm therebetween onto the lamination platform and the another first pole piece; causing the first clamping mechanism to release the clamped first pole piece, the second pole piece, and the diaphragm therebetween; and moving the first clamping mechanism to the feeding station, and repeating the clamping operation and the moving operation.
Optionally, the lamination method further comprises: and moving the laminated battery core to a tail winding mechanism, and enabling the tail winding mechanism to wind the cut diaphragm on the surface of the battery core.
Optionally, after the moving operation, the lamination method further comprises: and flattening the folded part of one side of the membrane, which is far away from the feeding station, through a flattening assembly.
Optionally, in the clamping operation, the first clamping mechanism clamps at least front ends of the first and second pole pieces facing the lamination platform.
Optionally, during the moving operation, the lamination platform is lowered by a height such that the clamped first and second pole pieces and the diaphragm therebetween move to directly above the lamination platform.
Optionally, the lamination method further adopts a second clamping mechanism, and the distance between the side of the first clamping mechanism close to the lamination platform and the side of the second clamping mechanism close to the lamination platform is twice of the size of the width of one cell; wherein the lamination method further comprises: when the first clamping mechanism carries the first pole piece, the second pole piece and the diaphragm therebetween to the lamination platform at the feeding station, the second clamping mechanism moves to the feeding station so as to clamp the newly fed first pole piece and the second pole piece and the diaphragm therebetween; after the first clamping mechanism loosens the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the second clamping mechanism conveys the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece to the lamination platform; after the second clamping mechanism releases the clamped first pole piece and the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the first clamping mechanism and the second clamping mechanism return to the initial positions, the first clamping mechanism is located at the feeding station, and the second clamping mechanism is located on the side, away from the lamination platform, of the feeding station.
The beneficial effect of this application is: according to the embodiment of the application, the first pole piece and the second pole piece with different polarities are respectively positioned on the upper surface and the lower surface of the diaphragm, and then the first pole piece and the second pole piece which are positioned are clamped with the diaphragm between the first pole piece and the second pole piece and move right above the lamination platform, so that the two pole pieces are laminated at one time, and the lamination efficiency is improved. In addition, the upper clamping block and the lower clamping block of the clamping mechanism are always in contact with the same pole piece in the operation process, so that cross contamination can be avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic diagram of a lamination arrangement according to an embodiment of the present application;
FIG. 2 is a schematic view of the lamination platform and the press blocks and the relationship of the press blocks of the lamination device of FIG. 1;
FIG. 3 is a schematic diagram of a first clamping mechanism and a press block according to an embodiment of the present application;
FIG. 4 is a schematic diagram of the construction of the drive assembly, the first clamping mechanism and the second clamping mechanism of the lamination device according to one embodiment of the present application;
fig. 5 is a schematic diagram of a cell according to an embodiment of the present application;
FIG. 6 is a flow chart of a lamination method according to an embodiment of the present application;
FIG. 7 is a process schematic of a lamination method according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a schematic structural diagram of a lamination device according to an embodiment of the present application is shown, in which a diaphragm 20, a first pole piece 21 and a second pole piece 22 to be laminated are shown, and the first pole piece 21 and the second pole piece 22 may be pole pieces with different polarities. In the embodiment shown in fig. 1, the lamination device 10 may include a lamination platform 11, a membrane unwinding mechanism 12, a positioning assembly 13, a first clamping mechanism 15, a driving assembly 16, a pressing block assembly 17, a flattening assembly 18, and a lamination platform lifting mechanism 19.
The lamination platform 11 has a working surface 110 for performing a lamination operation of the diaphragm 20, the first pole piece 21 and the second pole piece 22 on the working surface 110. The working surface 110 may generally be the upper surface of the lamination platform 11. The lamination platform lifting mechanism 19 may include a motor, a screw nut, or an electric cylinder, and is configured to drive the lamination platform 11 to ascend and descend.
The membrane unwinding mechanism 12 may include a transition roller 120 and an unwinding roller 121, as well as other intermediate rollers, such as a membrane buffer roller, a membrane tension control roller, and the like. The unwinding roller 121 is used for carrying the rolled diaphragm 20, and the transition roller 120 is used for changing the conveying direction of the diaphragm 20. The membrane unwinding mechanism 12 is used for conveying the membrane 20 towards the lamination platform 11 via the transition roller 120. Wherein, during the initial transfer, the membrane 20 can be transferred to the working surface 110 of said lamination platform 11 in order to press the membrane 20 against the lamination platform 11, or a pole piece and the membrane 20 thereunder can be pressed against the lamination platform 11 after placing the pole piece on the membrane 20 on the lamination platform 11. Wherein a membrane 20 can be horizontally transported from the transition roll 120 onto the working surface 110 of the lamination stage 11; of course, the membrane 20 between the transition roller 120 and the lamination platform 11 may also be slightly inclined with respect to the horizontal, for example within 30 ° of an upward or downward inclination. After the separator 20 is transferred from the transition roll 120 onto the working surface 110 of the lamination stage 11, a first pole piece 21, for example a negative pole piece, may be placed on the lamination stage 11. Then, the first pole piece 21 and the diaphragm 20 thereunder are pressed on the lamination platform 11 by the pressing block assembly 17, where the pressing block assembly 17 can be located at the right edge of the lamination platform 11, i.e. the pressing block assembly 17 is arranged at one side of the lamination platform 11 close to the incoming material direction of the pole pieces. The pressing block assembly 17 is used for positioning the boundary of the diaphragm 20, so that the driving assembly 16 drives the first clamping mechanism 15 to drive the diaphragm 20 to bypass the pressing block assembly 17 and move to the position right above the lamination platform 11.
The positioning assembly 13 is configured to position a first pole piece 21 and a second pole piece 22 on the upper surface and the lower surface of the diaphragm 20, respectively, at the feeding station 14 located between the lamination platform 11 and the transition roller 120, so that the second pole piece 22 is disposed opposite to the first pole piece 21. The positioning assembly 13 may employ the suction plates 130, 131 to suck the corresponding pole pieces and position them on the surface of the diaphragm 20. When the first pole piece 21 placed on the lamination stage 11 is a negative pole piece, the first pole piece 21 and the second pole piece 22 placed on the upper surface and the lower surface of the separator 20 may also be a negative pole piece and a positive pole piece, respectively. Of course, it is also possible to place the first pole piece 21, for example a positive pole piece, on the lamination platform 11, in which case the first pole piece 21 and the second pole piece 22 placed on the upper surface and the lower surface of said separator 20 can also be a positive pole piece and a negative positive pole piece, respectively.
The first clamping mechanism 15 is used to clamp the first and second pole pieces 21, 22 positioned with the diaphragm 20 therebetween. The first clamping mechanism 15 may include an upper clamping block 150 and a lower clamping block 151, and a driving device for driving the upper clamping block 150 and the lower clamping block 151 to move, and the upper clamping block 150 and the lower clamping block 151 are disposed to be capable of approaching each other to clamp at least front end portions of the first pole piece 21 and the second pole piece 22 facing the lamination platform 11. After the first clamping mechanism 15 clamps the first pole piece 21, the second pole piece 22 and the diaphragm 20, the positioning assembly 13 can be removed from positioning the first pole piece 21 and the second pole piece 22. It should be noted that the positioning assembly 13 and the first clamping mechanism 15 may be disposed to contact different portions of the first pole piece 21 and the second pole piece 22, respectively, so that the positioning assembly 13 can position the first pole piece 21 and the second pole piece 22 on the diaphragm 20, and simultaneously clamp the first pole piece 21 and the second pole piece 22 and the diaphragm 20 through the first clamping mechanism 15.
The first clamping mechanism 15 may be mounted to the moving end 160 of the drive assembly 16. The driving assembly 16 includes a motor or a cylinder, etc. for driving the first clamping mechanism 15 to move to the lamination platform 11, so that the first clamping mechanism 15 moves the first pole piece 21, the second pole piece 22 and the diaphragm 20 therebetween to be directly above the lamination platform 11 and make the second pole piece 22 close to the lamination platform 11. The manner in which the driving assembly 16 drives the first clamping mechanism 15 to move may include translation, movement along a curve, movement along a fold line, etc., as long as it is ensured that the placement orientation of the first pole piece 21, the second pole piece 22 and the diaphragm 20 therebetween, which are moved to the position directly above the lamination platform 11, is not changed.
When the driving assembly 16 drives the first clamping mechanism 15 to move, the lamination platform 11 can be driven by the lamination platform lifting mechanism 19 to descend to a certain height so as to avoid the pressing block assembly 17 from colliding with the first clamping mechanism 15 and facilitate the clamped first pole piece 21, the second pole piece 22 and the diaphragm 20 to be placed right above the lamination platform 11. In addition, the lamination platform lifting mechanism 19 can also drive the lamination platform 11 to perform height adjustment, so that the pole pieces at the uppermost part of the lamination platform 11 are ensured to be at the same height after feeding each time. In order to ensure that the size of the cells formed by lamination meets the set requirements, the distance between the side of the first pole piece 21, which is away from the transition roller 120, placed for the first time on the lamination platform 11 and the side of the first pole piece 21, which is away from the transition roller 120, on the loading station 14 is twice the size of the width W of one cell 23, i.e. the distance is 2W (see fig. 1 and 5). In addition, the driving assembly 16 drives the diaphragm 20 and the second pole piece 22 on the feeding station 14 and the first pole piece 21 to translate to the lamination platform 11 by a distance of two cell widths W, that is, the distance is 2W.
Referring also to fig. 2, the pressing block assembly 17 may be disposed at a side of the lamination platform 11 adjacent to the feeding station 14, and may include a pressing block 170 and a pressing block driving mechanism 171, and the pressing block driving mechanism 171 may include a motor, an air cylinder, or the like, for driving the pressing block 170 to move in a direction Z perpendicular to the working surface 110 of the lamination platform 11 and to move in a direction Y along the width of the diaphragm 20. Wherein, the movement of the pressing block 170 in the direction Z can be used to press the first pole piece 21 and the diaphragm 20 thereunder onto the lamination platform 11, or to release the pressed state; movement of mass 170 in direction Y may be used to disengage the overlap with diaphragm 20 and the pole piece thereon so that mass 170 can move in direction Z around diaphragm 20 and the pole piece thereon. After the clamped diaphragm 20, the second pole piece 22 and the first pole piece 21 are placed right above the lamination platform 11, the pressing block 170 on the lamination platform 11 releases the pressed diaphragm and pole piece, so that the pressing block 170 bypasses the diaphragm 20 and presses the conveyed diaphragm 20, the second pole piece 22 and the first pole piece 21 on the lamination platform 11 from above. The first clamping mechanism 15 may then release the clamped pole pieces and membrane and the drive assembly 16 drives the first clamping mechanism 15 to move to the feeding station 14 for repeated handling of the newly fed first pole piece 21, second pole piece 22 and membrane 20 therebetween onto the lamination platform 11. It will be readily appreciated that first clamping mechanism 15 may also have a process of moving around diaphragm 20 and the pole pieces thereon, similar to the movement of pressure piece 170 around diaphragm 20 and the pole pieces thereon.
The flattening assembly 18 may be disposed on a side of the lamination platform 11 away from the loading station 14, and is configured to flatten a folded portion of the diaphragm 20 away from the loading station 14. The flattening assembly 18 can include a flattening block 180 and a flattening block drive mechanism 181. The flattening block drive mechanism 181 may be used to drive the flattening block 180 to move in a direction Z perpendicular to the working surface 110 of the lamination stage 11, in a direction Y along the width of the membrane 20, and in a direction X along which the membrane 20 is transported. Flattening block 180 may have a longer length in the Y-direction to flatten more folds of septum 20 at a time. The leveling block driving mechanism 181 may include a cylinder or a motor, etc. By driving the pressing block driving mechanism 181, the pressing block 180 can press the folding part of the diaphragm 20 (usually, the side far from the pressing block 170), so that the diaphragm 20 is better attached to the surface of the pole piece.
As shown in fig. 3, the lower clamping block 151 of the first clamping mechanism 15 may further include a pressure block avoidance region 152 to avoid interference of the lower clamping block 151 with the pressure block 170 when the first clamping mechanism 15 moves to just above the lamination platform 11 and approaches the lamination platform 11. In this embodiment, the two pressure avoiding block regions 152 are blank regions corresponding to the two pressure blocks 170, respectively; that is, a portion where the lower clamp block 151 and the pressing block 170 overlap is hollowed out so that the lower clamp block 151 and the pressing block 170 can be simultaneously pressed against the lamination stage 11. Similarly, the upper clamping block 150 of the first clamping mechanism 15 may also include a pressure-avoiding region corresponding to the pressure-avoiding region 152 in the vertical direction, so as to avoid a hard collision between the upper clamping block 150 and the pressure block 170 when the first clamping mechanism 15 moves to a position right above the lamination platform 11 and approaches the lamination platform 11.
In addition, the lower clamping block 151 and the upper clamping block 150 having a narrow width may be provided such that when the first clamping mechanism 15 is moved to just above the lamination platform 11 and close to the lamination platform 11, the lower clamping block 151 and the upper clamping block 150 correspond to only a left portion of the lamination platform 11 without overlapping and interfering with the pressing block 170.
As shown in fig. 4, the lamination device 10 may further include a second clamping mechanism 15 ', which second clamping mechanism 15' may have the same structure as the first clamping mechanism 15 and may also be mounted to the moving end 160 of the drive assembly 16. The spacing between the side 153 of the first clamping mechanism 15 adjacent to the lamination platform 11 and the side 153 'of the second clamping mechanism 15' adjacent to the lamination platform 11 is twice the dimension of the width W of one cell (see fig. 5), so that: when the first clamping mechanism 15 is moved to the lamination platform 11, the second clamping mechanism 15' is moved to the loading station 14 and is used to clamp the newly loaded first and second pole pieces 21, 22 and the separator 20 therebetween. In another embodiment, the second clamping mechanism 15 'may also be mounted on the moving end of another driving assembly, and the first clamping mechanism 15 and the second clamping mechanism 15' may be driven by the two driving assemblies to move synchronously.
The lamination device 10 may further include a cutter assembly (not shown), and after the laminated battery cell reaches a set size, the battery cell is loaded and unloaded from the lamination platform 11 by cutting the diaphragm 20 through the cutter assembly. Further, the lamination device 10 may further include a tail winding mechanism (not shown), and the discharged battery core may be moved to the tail winding mechanism, and the tail winding mechanism is configured to wind the cut separator on the surface of the battery core.
Referring to fig. 6 and 7, the lamination method of the present application is described below in conjunction with the lamination apparatus 10 described above. Fig. 6 is a flowchart of a lamination method according to an embodiment of the present application, and fig. 7 is a process diagram of the lamination method according to an embodiment of the present application.
The lamination method of one embodiment of the present application may mainly include the following operations: releasing the membrane S1, placing the first pole piece S2, loading S3, clamping S4, moving S5, and repeating S6.
The operation of the release diaphragm S1 is specifically: and releasing the membrane from the membrane roll through a membrane unreeling mechanism, so that the membrane is conveyed towards the lamination platform through a transition roller.
Wherein, as shown in connection with fig. 1 and 7(a), during the initial transfer, diaphragm 20 may be conveyed horizontally from transition roller 120 onto working surface 110 of lamination stage 11 to press diaphragm 20 against lamination stage 11, or a pole piece may be placed on diaphragm 20 on lamination stage 11 and then pressed with diaphragm 20 thereunder against lamination stage 11; of course, the membrane 20 between the transition roller 120 and the lamination platform 11 may also be slightly inclined with respect to the horizontal, for example within 30 ° of an upward or downward inclination.
The operation of placing the first pole piece S2 is specifically: a first pole piece, such as a negative pole piece, is placed on the separator membrane transferred to the lamination platform and the first pole piece and the separator membrane thereunder are pressed against the lamination platform by a pressing block assembly.
As shown in fig. 1 and 7(a), after the separator 20 is transferred from the transition roller 120 to the working surface 110 of the lamination stage 11, a first pole piece 21, such as a negative pole piece, may be placed on the lamination stage 11. Then, the first pole piece 21 and the diaphragm 20 thereunder are pressed on the lamination platform 11 by the pressing block 170 of the pressing block assembly 17, where the pressing block assembly 17 may be located at the right edge of the lamination platform 11, i.e. the pressing block assembly 17 is disposed at one side of the lamination platform 11 close to the feeding direction of the pole pieces. The pressing block 170 of the pressing block assembly 17 is used for positioning the boundary of the diaphragm 20, so that the driving assembly 16 drives the first clamping mechanism 15 to drive the diaphragm 20 to bypass the pressing block 170 of the pressing block assembly 17 and move to the position right above the lamination platform 11. The movement of the pressing block 170 in the direction Z can be used to press the first pole piece 21 and the diaphragm 20 thereunder against the lamination platform 11, or to release the pressed state; movement of mass 170 in direction Y may be used to disengage the overlap with diaphragm 20 and the pole piece thereon so that mass 170 can move in direction Z around diaphragm 20 and the pole piece thereon.
The operation of the feeding S3 is specifically as follows: respectively positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of a diaphragm released by a diaphragm roll at a feeding station, and enabling the second pole piece to be opposite to the first pole piece; the space between one side of the first pole piece on the lamination platform, which is far away from the transition roller, and one side of the first pole piece at the feeding station, which is far away from the transition roller, is the width dimension of two battery cells.
As shown in fig. 1 and 7(B), a positioning component 13, such as an adsorption plate, may be used to adsorb the corresponding pole piece and position it on the surface of the diaphragm 20. When the first pole piece 21 placed on the lamination stage 11 is a negative pole piece, the first pole piece 21 and the second pole piece 22 placed on the upper surface and the lower surface of the separator 20 may also be a negative pole piece and a positive pole piece, respectively. Of course, it is also possible to place the first pole piece 21, for example a positive pole piece, on the lamination platform 11, in which case the first pole piece 21 and the second pole piece 22 placed on the upper surface and the lower surface of said separator 20 can also be a positive pole piece and a negative positive pole piece, respectively.
The operation of clamping S4 is specifically: clamping the positioned first and second pole pieces with a diaphragm therebetween by a first clamping mechanism.
As shown in fig. 1 and fig. 7(B), when the upper clamping block 150 and the lower clamping block 151 of the first clamping mechanism 15 are closed to clamp the first pole piece 21, the second pole piece 22 and the diaphragm 20, the positioning assembly 13 can be removed from the positioning assembly 13 to position the first pole piece 21 and the second pole piece 22.
In addition, in the operation of clamping S4, the first clamping mechanism clamps at least front end portions of the first and second pole pieces facing the lamination stage. The front end parts, facing the lamination platform, of the first pole piece and the second pole piece are clamped by the first clamping mechanism, so that the first pole piece and the second pole piece can be prevented from being pulled and deformed by a diaphragm due to insufficient strength in the subsequent moving process.
The operation of the movement S5 is specifically: driving the first clamping mechanism to move toward a lamination platform such that the first clamping mechanism moves the first pole piece, the second pole piece, and a diaphragm therebetween directly over the lamination platform and the second pole piece is proximate to the lamination platform.
A state in which the first clamping mechanism 15 moves the first pole piece 21, the second pole piece 22, and the diaphragm 20 therebetween toward the lamination stage 11 is shown in fig. 7 (C). During this time, the diaphragm 20 between the rear end of the first pole piece 21 placed first on the lamination platform 11 and the front end of the first and second pole pieces at the feeding station 14 is moved between the first pole piece 21 placed first on the lamination platform 11 and the second pole piece 22 placed at the feeding station 14.
The movement of the first clamping mechanism 15 toward the lamination platform 11 may include translation, movement along a curve, movement along a fold line, etc., as long as it is ensured that the placement of the first pole piece 21, the second pole piece 22 and the diaphragm 20 therebetween, which are moved to the position directly above the lamination platform 11, is not changed.
In addition, during the moving operation, the lamination platform may be lowered by a height such that the clamped first and second pole pieces and the diaphragm therebetween move to directly above the lamination platform. More specifically, when the driving assembly 16 drives the first clamping mechanism 15 to translate, the lamination platform 11 may be driven by the lamination platform lifting mechanism 19 to descend by a certain height so as to avoid collision of the pressing block assembly 17 with the first clamping mechanism 15 and to facilitate the clamped first pole piece 21 and the second pole piece 22 and the diaphragm 20 to be placed right above the lamination platform 11. In addition, the lamination platform lifting mechanism 19 can also drive the lamination platform 11 to perform height adjustment, so that the pole pieces at the uppermost part of the lamination platform 11 are ensured to be at the same height after feeding each time.
After the moving operation, the lamination method may further include: and flattening the folded part of one side of the membrane, which is far away from the feeding station, through a flattening assembly.
Wherein, by the driving of the flattening block driving mechanism 181, the flattening block 180 can press the folded portion of the diaphragm 20 (usually, the side far from the pressing block 170), so that the diaphragm 20 can better adhere to the surface of the pole piece.
The operation of repeating S6 may specifically include: causing the press block assembly on the lamination platform to loosen the pressed another first pole piece and causing the press block assembly to press the first pole piece, the second pole piece and the diaphragm therebetween onto the lamination platform and the another first pole piece; causing the first clamping mechanism to release the clamped first pole piece, the second pole piece, and the diaphragm therebetween; and moving the first clamping mechanism to the feeding station, and repeating the clamping operation and the moving operation.
As shown in fig. 1 and fig. 7(D), when the clamped diaphragm 20, the second pole piece 22 and the first pole piece 21 are placed right above the lamination platform 11, the material can be reloaded at the material loading station 14, that is, the new first pole piece 21 and the new second pole piece 22 are respectively positioned on the upper surface and the lower surface of the diaphragm 20.
In addition, after the clamped diaphragm 20, the second pole piece 22 and the first pole piece 21 are placed right above the lamination platform 11, the pressing block 170 on the lamination platform 11 releases the pressed diaphragm and pole piece, so that the pressing block 170 bypasses the diaphragm 20 and presses the conveyed diaphragm 20, the second pole piece 22 and the first pole piece 21 on the lamination platform 11 from above. The first clamping mechanism 15 may then release the clamped pole pieces and membranes and the drive assembly 16 drives the first clamping mechanism 15 to move to the feeding station 14 for repeated handling of the newly fed first pole piece 21, second pole piece 22 and membranes 20 therebetween onto the lamination platform 11, as shown in fig. 7 (E).
The lamination method can also adopt a second clamping mechanism, and the distance between one side of the first clamping mechanism close to the lamination platform and one side of the second clamping mechanism close to the lamination platform is twice of the width of one battery cell. Accordingly, the lamination method may further include: when the first clamping mechanism carries the first pole piece, the second pole piece and the diaphragm therebetween to the lamination platform at the feeding station, the second clamping mechanism moves to the feeding station so as to clamp the newly fed first pole piece and the second pole piece and the diaphragm therebetween; after the first clamping mechanism loosens the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the second clamping mechanism conveys the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece to the lamination platform; after the second clamping mechanism releases the clamped first pole piece and the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the first clamping mechanism and the second clamping mechanism return to the initial positions, the first clamping mechanism is located at the feeding station, and the second clamping mechanism is located on the side, away from the lamination platform, of the feeding station.
In another embodiment, the lamination method may further include: after the battery cell formed by the lamination reaches a set size, the diaphragm is cut off by the cutter assembly, and the battery cell is loaded and unloaded from the lamination platform.
In another embodiment, the lamination method may further include: and moving the laminated battery core to a tail winding mechanism, and enabling the tail winding mechanism to wind the cut diaphragm on the surface of the battery core.
From the above, those skilled in the art can easily understand that the beneficial effects of the present application are: according to the embodiment of the application, the first pole piece and the second pole piece with different polarities are respectively positioned on the upper surface and the lower surface of the diaphragm, and then the first pole piece and the second pole piece which are positioned are clamped with the diaphragm between the first pole piece and the second pole piece and move right above the lamination platform, so that the two pole pieces are laminated at one time, and the lamination efficiency is improved. In addition, the upper clamping block and the lower clamping block of the clamping mechanism are always in contact with the same pole piece in the operation process, so that cross contamination can be avoided.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.
Claims (16)
1. A lamination assembly, comprising:
the lamination platform is used for carrying out lamination operation on the lamination platform;
the membrane unwinding mechanism is provided with a transition roller and is used for conveying the membrane towards the lamination platform through the transition roller;
the positioning assembly is used for positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of the diaphragm respectively at a feeding station between the lamination platform and the transition roller, so that the second pole piece is opposite to the first pole piece;
a first clamping mechanism for clamping the positioned first and second pole pieces with a diaphragm therebetween; and
a drive assembly, the first clamping mechanism being mounted to a moving end of the drive assembly, the drive assembly being configured to drive the first clamping mechanism to move to the lamination platform such that the first clamping mechanism moves the first pole piece, the second pole piece, and a diaphragm therebetween directly above the lamination platform and brings the second pole piece in proximity to the lamination platform.
2. The lamination device according to claim 1, further comprising:
the pressing block assembly is arranged on one side, close to the feeding station, of the lamination platform and comprises a pressing block and a pressing block driving mechanism, and the pressing block driving mechanism is used for driving the pressing block to move in the direction perpendicular to the working surface of the lamination platform and move in the direction along the width of the diaphragm.
3. The lamination device according to claim 2, wherein the first clamping mechanism comprises:
the upper clamping block and the lower clamping block are arranged to be close to each other and clamp at least the front end parts of the first pole piece and the second pole piece facing the lamination platform.
4. The lamination device according to claim 3, wherein the upper and lower clamping blocks each include an escape press block area to avoid interference of the upper and lower clamping blocks with the press block when the first clamping mechanism is moved directly above and proximate to the lamination platform.
5. The lamination device according to claim 1, further comprising:
the flattening assembly is arranged on one side, away from the feeding station, of the lamination platform and used for flattening the folded position, away from one side of the feeding station, of the diaphragm.
6. The lamination device according to claim 1, further comprising:
and the lamination platform lifting mechanism is used for driving the lamination platform to ascend and descend.
7. The lamination device according to claim 1, wherein a spacing between a side of a leading pole piece placed on the lamination platform that is distal from the transition roller and a side of the first pole piece placed at the loading station that is distal from the transition roller is twice a dimension of a width of one cell.
8. The lamination device according to any one of claims 1-7, further comprising:
a second clamping mechanism, wherein the distance between one side of the first clamping mechanism close to the lamination platform and one side of the second clamping mechanism close to the lamination platform is twice of the size of the width of one battery cell; wherein when the first clamping mechanism moves to the lamination platform, the second clamping mechanism moves to the feeding station and is used for clamping the newly fed first and second pole pieces and the separator therebetween.
9. A lamination method, characterized in that it comprises:
and (3) loading operation, namely: respectively positioning a first pole piece and a second pole piece with different polarities on the upper surface and the lower surface of a diaphragm released by a diaphragm roll at a feeding station, and enabling the second pole piece to be opposite to the first pole piece;
the clamping operation, namely: clamping the positioned first and second pole pieces with a diaphragm therebetween by a first clamping mechanism; and
moving operations, namely: driving the first clamping mechanism to move toward a lamination platform such that the first clamping mechanism moves the first pole piece, the second pole piece, and a diaphragm therebetween directly over the lamination platform and the second pole piece is proximate to the lamination platform.
10. The lamination process according to claim 9, further comprising, prior to the feeding operation:
releasing a membrane from the membrane roll by a membrane unwinding mechanism, so that the membrane is conveyed towards the lamination platform through a transition roller; and
placing another first pole piece on the diaphragm conveyed to the lamination platform, and pressing the another first pole piece and the diaphragm below the another first pole piece on the lamination platform through a pressing block assembly; the distance between one side of the other first pole piece on the lamination platform, which is far away from the transition roller, and one side of the first pole piece at the feeding station, which is far away from the transition roller, is the width dimension of two battery cells.
11. The lamination method according to claim 10, further comprising, after said moving operation:
causing the press block assembly on the lamination platform to loosen the pressed another first pole piece and causing the press block assembly to press the first pole piece, the second pole piece and the diaphragm therebetween onto the lamination platform and the another first pole piece;
causing the first clamping mechanism to release the clamped first pole piece, the second pole piece, and the diaphragm therebetween; and
and moving the first clamping mechanism to the feeding station, and repeating the clamping operation and the moving operation.
12. The lamination process of claim 11, further comprising:
and moving the laminated battery core to a tail winding mechanism, and enabling the tail winding mechanism to wind the cut diaphragm on the surface of the battery core.
13. The lamination method according to claim 10, further comprising, after said moving operation:
and flattening the folded part of one side of the membrane, which is far away from the feeding station, through a flattening assembly.
14. The lamination process according to claim 9, wherein in the clamping operation, the first clamping mechanism clamps at least the front ends of the first and second pole pieces facing the lamination platform.
15. The lamination process according to claim 9, wherein during the moving operation, the lamination platform is lowered by a height such that the clamped first and second pole pieces and the diaphragm therebetween move to directly above the lamination platform.
16. The lamination method according to any one of claims 9 to 15, further employing a second clamping mechanism, wherein a spacing between a side of the first clamping mechanism adjacent to the lamination platform and a side of the second clamping mechanism adjacent to the lamination platform is twice a dimension of a width of one cell; wherein the lamination method further comprises:
when the first clamping mechanism carries the first pole piece, the second pole piece and the diaphragm therebetween to the lamination platform at the feeding station, the second clamping mechanism moves to the feeding station so as to clamp the newly fed first pole piece and the second pole piece and the diaphragm therebetween;
after the first clamping mechanism loosens the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the second clamping mechanism conveys the clamped first pole piece, the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece to the lamination platform; and is
After the second clamping mechanism releases the clamped first pole piece and the clamped second pole piece and the diaphragm between the first pole piece and the second pole piece, the first clamping mechanism and the second clamping mechanism return to the initial positions, the first clamping mechanism is located at the feeding station, and the second clamping mechanism is located on the side, away from the lamination platform, of the feeding station.
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| CN201911175309.3A CN110890582A (en) | 2019-11-26 | 2019-11-26 | Lamination device and lamination method |
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| CN201911175309.3A CN110890582A (en) | 2019-11-26 | 2019-11-26 | Lamination device and lamination method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111755756A (en) * | 2020-06-05 | 2020-10-09 | 无锡先导智能装备股份有限公司 | Battery cell lamination method and device |
| CN111805206A (en) * | 2020-07-17 | 2020-10-23 | 盐城海荣炉业科技有限公司 | Oil cooler assembly machine and assembly method |
| CN112615041A (en) * | 2021-01-11 | 2021-04-06 | 深圳市格林晟科技有限公司 | Lamination mechanism and lamination method |
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| CN110380128A (en) * | 2019-07-16 | 2019-10-25 | 蜂巢能源科技有限公司 | It is die cut lamination system and method |
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| CN112615041A (en) * | 2021-01-11 | 2021-04-06 | 深圳市格林晟科技有限公司 | Lamination mechanism and lamination method |
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