CN110890586A - Battery pole piece lamination device and lamination method - Google Patents
Battery pole piece lamination device and lamination method Download PDFInfo
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- CN110890586A CN110890586A CN201911213823.1A CN201911213823A CN110890586A CN 110890586 A CN110890586 A CN 110890586A CN 201911213823 A CN201911213823 A CN 201911213823A CN 110890586 A CN110890586 A CN 110890586A
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000003475 lamination Methods 0.000 title claims description 109
- 239000000463 material Substances 0.000 claims abstract description 48
- 238000005096 rolling process Methods 0.000 claims abstract description 30
- 238000010030 laminating Methods 0.000 claims abstract description 29
- 239000012528 membrane Substances 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 12
- 238000001179 sorption measurement Methods 0.000 claims description 10
- 238000004804 winding Methods 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 238000003892 spreading Methods 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 description 13
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910001416 lithium ion Inorganic materials 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002699 waste material Substances 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
- H01M10/0585—Construction or manufacture of accumulators having only flat construction elements, i.e. flat positive electrodes, flat negative electrodes and flat 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
- H01M10/04—Construction or manufacture in general
- H01M10/0404—Machines for assembling batteries
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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
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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
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- Primary Cells (AREA)
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Abstract
The invention discloses a battery pole piece laminating device and a laminating method, which comprise a top diaphragm material rolling machine and at least one group of laminating units, wherein each laminating unit comprises a first laminating mechanism and a second laminating mechanism which are identical in structure, each laminating mechanism comprises a conveying belt, a feeding structure and a bottom diaphragm material rolling machine, the feeding structure is used for conveying a positive plate or a negative plate, the bottom diaphragm material rolling machine is used for conveying a diaphragm at the bottom of an electrode plate, and the top diaphragm material rolling machine is used for conveying a diaphragm at the top of the electrode plate.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a laminating device for battery pole pieces.
Background
At present, the global attention is paid to the environmental problem, the pollution of fuel non-renewable energy sources to the environment is becoming serious, and the problem of short supply of the fuel non-renewable energy sources is also generated. Under the drive of the innovation of new energy technology and new technology, the application of lithium ion batteries in various fields is gradually widened, and particularly, the lithium ion batteries are gradually popularized in the fields of electric automobiles, new energy, electronic products and the like, so that the global output of the lithium ion batteries is rapidly increased.
Existing lithium batteries have both wound and stacked configurations. The winding structure is an electric core formed by combining winding modes, and the structure has great potential safety hazard due to certain deformation caused by inconsistent tension of the internal structure; the lamination type structure adopts a lamination station to drive the diaphragm to realize Z-shaped reciprocating motion, simultaneously and reciprocally superimposes the positive pole piece and the negative pole piece, and finally realizes the assembly form that the positive pole piece, the diaphragm and the negative pole piece are sequentially superimposed together by separating the positive pole piece and the negative pole piece by the diaphragm.
Therefore, it is particularly important to provide a lamination device and a lamination method that can achieve high efficiency lamination.
Disclosure of Invention
Aiming at the defects in the technology, the invention aims to provide a battery pole piece laminating device and a battery pole piece laminating method, which can realize the quick superposition of positive and negative pole pieces and a diaphragm and improve the manufacturing efficiency of the lamination.
In order to achieve the purpose, the invention provides the following scheme:
the invention provides a laminating device of a battery pole piece, which comprises a top diaphragm material coiling machine and at least one group of laminating units;
the lamination unit comprises a first lamination mechanism and a second lamination mechanism which have the same structure, and the first lamination mechanism and the second lamination mechanism are sequentially arranged from head to tail;
the lamination mechanism comprises a conveying belt, a feeding structure and a bottom membrane material rolling machine, the bottom membrane material rolling machine is arranged at the upper part of the conveying belt, and the feeding structure is arranged on the side surface of the conveying belt;
the feeding structure is used for conveying the positive plate or the negative plate;
the bottom membrane material rolling machine is used for conveying the membrane at the bottom of the electrode plate;
the top diaphragm material rolling machine is used for conveying diaphragms on the tops of the electrode plates, and the top diaphragm material rolling machine is arranged on the upper portion of a conveying belt of the lamination unit.
Preferably, the bottom membrane material rolling machine comprises a first membrane roller, a first positioning roller and a first supporting plate, the first membrane roller is arranged at the top of the first supporting plate, the first membrane roller is driven by a servo motor, the first positioning roller is arranged on the first supporting plate, and the first positioning roller is perpendicular to the advancing direction of the conveying belt and abuts against the input end of the conveying belt.
Preferably, the top diaphragm material rolling machine comprises a third diaphragm roller, a third positioning roller and a third support plate, the third diaphragm roller is arranged at the top of the third support plate, a servo motor drives the third diaphragm roller, the third positioning roller is arranged on the third support plate, and the third positioning roller is perpendicular to the advancing direction of the conveying belt and abuts against the output end of the conveying belt.
Preferably, the lower part of the conveying belt is provided with a base, two ends of the base are respectively provided with a belt shaft, and the conveying belt is wound outside the two belt shafts; a servo motor used for driving the belt shaft is arranged in the base.
Preferably, the conveying belt is uniformly provided with adsorption holes, and the inner cavity of the conveying belt is communicated with the vacuum pump through a vacuum pipeline.
Preferably, the bottom membrane material rolling machine further comprises a first tension roller, the first tension roller is arranged on the first supporting plate, and the first tension roller is arranged between the first membrane roller and the first positioning roller.
Preferably, the top diaphragm material rolling machine further comprises a third tension roller, the third tension roller is arranged on the third support plate, and the third tension roller is arranged between the third diaphragm roller and the third positioning roller.
Preferably, a cutting mechanism is further arranged on the upper portion of the third positioning roller and used for cutting the diaphragm.
Preferably, the cutting mechanism comprises a cutter frame, linear slide rails are arranged inside two sides of the cutter frame, a cutter is arranged on the linear slide rails, and the cutter is driven by a pressing cylinder to move up and down.
The method for laminating the battery pole piece by using the laminating device of the battery pole piece comprises the following steps:
s1: firstly, respectively placing a diaphragm material roll on a first diaphragm roller and a second diaphragm roller, then sequentially winding a diaphragm on the first diaphragm roller around a first tension roller and a first positioning roller and then spreading the diaphragm on a conveying belt, simultaneously sequentially winding a diaphragm on a third diaphragm roller around a third tension roller and a third positioning roller and then spreading the diaphragm on the conveying belt, and finally placing a positive plate and a negative plate on a feeding structure;
s2: starting a vacuum pump to enable the adsorption holes to adsorb the diaphragm on the conveying belt;
s3: simultaneously starting servo motors for driving the belt shaft, the first diaphragm roller and the second diaphragm roller, then tensioning the bottom diaphragm through the first tension roller, and finally tensioning the top diaphragm through the third tension roller;
s4: the first lamination mechanism performs lamination: the conveying belt drives the bottom diaphragm to convey from the input end to the output end, and meanwhile, the positive plate is conveyed to the upper part of the bottom diaphragm through the feeding structure;
s5: the second lamination mechanism performs lamination: in the step 4, the lamination completed by the first lamination mechanism is transmitted to the input end of the conveying belt of the second lamination mechanism from the output end of the conveying belt of the first lamination mechanism, the conveying belt of the second lamination mechanism drives the bottom diaphragm of the first lamination mechanism to enter the second lamination mechanism, the bottom diaphragm of the first lamination mechanism is transmitted from the input end of the conveying belt of the second lamination mechanism to the output end of the conveying belt of the second lamination mechanism, and when the bottom diaphragm of the second lamination mechanism covers the positive plate, the negative plate is transmitted to the upper part of the bottom diaphragm of the second lamination mechanism through the feeding structure, namely, the positive and negative lamination of a primary pole plate is completed;
s6: repeating the steps S4 and S5 until the set lamination layer number is finished;
s7: and finally, the lamination passes through a second positioning roller and is cut off by a cutter to complete lamination.
Compared with the prior art, the invention has the following technical effects:
1. the battery pole piece laminating device has a simple structure, the positive pole piece and the negative pole piece are laminated at intervals, and the positive pole piece and the negative pole piece are reasonably overlapped and arranged through the transmission of the laminating mechanism.
2. The battery pole piece laminating device has the advantages that the transmission of the conveying belt is added, so that the laminating mode is changed from the traditional single-group crossed lamination into a multi-group linear transmission mode, a plurality of groups of positive and negative pole pieces can be simultaneously laminated, and the laminating efficiency is greatly improved.
3. According to the battery pole piece laminating device, the top diaphragm material rolling machine and the multiple groups of bottom diaphragm material rolling machines are additionally arranged and are matched with the transmission of the conveying belt, so that the multiple groups of bottom diaphragm material rolling machines are simultaneously carried out, the traditional single diaphragm conveying mode is changed, and the positioning roller and the tension roller in the diaphragm material rolling machines are matched for positioning and adjusting, so that the lamination is more stable.
4. The feeding structure is added in the battery pole piece laminating device, the feeding structures are sequentially and linearly arranged, and the feeding structure of the positive pole piece and the feeding structure of the negative pole piece are arranged at intervals, so that the positive pole piece and the negative pole piece can be conveyed at the same time, and the laminating efficiency is accelerated.
5. According to the adsorption holes in the conveyer belt structure of the battery pole piece lamination device, the diaphragm can be adsorbed by using vacuum negative pressure, so that secondary positioning is not needed when lamination is carried out, and the yield and efficiency of products are greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a block diagram of a lamination device of the present invention;
FIG. 2 is an enlarged view of a first lamination mechanism of the present invention;
FIG. 3 is an enlarged view of a second lamination mechanism of the present invention;
FIG. 4 is a side view of a first lamination mechanism of the present invention;
FIG. 5 is an enlarged view of a top film web winder of the present invention;
wherein, 1-a first lamination mechanism, 1.1-a first conveyer belt, 1.2-a first bottom diaphragm material rolling machine, 1.3-a first positive plate, 1.4-a first base, 1.5-a first belt shaft, 1.6-a first adsorption hole, 1.7-a first vacuum pipeline, 1.21-a first diaphragm roller, 1.22-a first positioning roller, 1.23-a first tension roller, 1.24-a first supporting plate, 2-a second lamination mechanism, 2.1-a second conveyer belt, 2.2-a second bottom diaphragm material rolling machine, 2.3-a first negative plate, 2.4-a second base, 2.5-a second belt shaft, 2.6-a second adsorption hole, 2.7-a second vacuum pipeline, 2.21-a second diaphragm roller, 2.22-a second positioning roller, 2.23-a second tension roller, 2.24-a second supporting plate, 3-a top diaphragm material rolling machine, 3.1-third diaphragm roller, 3.2-third positioning roller, 3.3-third tension roller, 3.4-third support plate, 3.5-cutting mechanism, 3.51-cutter frame, 3.52-linear slide rail, 3.53-cutter and 3.54-pressing cylinder.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.
The invention aims to provide a laminating device of a battery pole piece, which is used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
As shown in fig. 1 to 4, the present embodiment provides a lamination device for a battery pole piece, which includes a top separator material winding machine 3 and a lamination unit.
As shown in fig. 1, two groups of the same lamination units are taken as an example for description in this embodiment, and the number of the lamination units can be actually adjusted as needed, and the two groups of lamination units are arranged end to end in a straight line.
Only the structural relationship of a set of lamination units is described, and the structures of a plurality of sets of lamination units are identical.
The group of lamination units comprises a first lamination mechanism 1 and a second lamination mechanism 2 which have the same structure, and the first lamination mechanism 1 and the second lamination mechanism 2 are sequentially arranged in a straight line end to end;
as shown in fig. 2, the first lamination mechanism 1 includes a first conveyor belt 1.1, a first feeding structure and a first bottom separator material coiling machine 1.2, the first bottom separator material coiling machine 1.2 is arranged above an input end of the first conveyor belt 1.1, the first feeding structure is arranged on a side surface of the first conveyor belt 1.1, the first feeding structure is used for conveying a first positive plate 1.3, and the first bottom separator material coiling machine 1.2 is used for conveying a separator at the bottom of the first positive plate 1.3;
wherein, the first bottom diaphragm material coiling machine 1.2 comprises a first diaphragm roller 1.21 and a first positioning roller 1.22, the device comprises a first tension roller 1.23 and a first supporting plate 1.24, wherein the top of the first supporting plate 1.24 is provided with a first diaphragm roller 1.21, a servo motor drives the first diaphragm roller 1.21, the first diaphragm roller 1.21 is used for bearing a diaphragm material roll required by lamination, a first positioning roller 1.22 is vertically arranged on the first supporting plate 1.24, the first positioning roller 1.22 is vertical to the advancing direction of a first conveyer belt 1.1 and is abutted against the input end of the first conveyer belt 1.1, the first positioning roller 1.22 is used for positioning a diaphragm at the bottom, the first tension roller 1.23 is vertically arranged on the first supporting plate 1.24, the first tension roller 1.23 is arranged between the first diaphragm roller 1.21 and the first positioning roller 1.22, the first tension roller 1.23 is arranged obliquely above the first positioning roller 1.22, and the first tension roller 1.23 is used for regulating the tension of the diaphragm at the bottom;
a first base 1.4 is arranged at the lower part of the first conveying belt 1.1, first belt shafts 1.5 are respectively arranged at two ends of the first base 1.4, the first conveying belt 1.1 surrounds the two first belt shafts 1.5, a servo motor for driving the first belt shafts 1.5 is arranged in the first base 1.4, and the first belt shafts 1.5 at two ends drive the first conveying belt 1.1 to perform transmission;
evenly open on the first conveyer belt 1.1 and have a plurality of first absorption holes 1.6, the inner chamber of first conveyer belt 1.1 communicates with the vacuum pump through first vacuum pipeline 1.7, and the vacuum pump extracts the air of the inner chamber of first conveyer belt 1.1 through first vacuum pipeline 1.7 to act on first absorption hole 1.6, make first absorption hole 1.6 realize the state of negative pressure on the first conveyer belt 1.1, and then adsorb the diaphragm on the first conveyer belt 1.1.
As shown in fig. 3, the second lamination mechanism 2 includes a second conveyor belt 2.1, a second feeding structure and a second bottom separator material coiling machine 2.2, the second bottom separator material coiling machine 2.2 is arranged above the input end of the second conveyor belt 2.1, the second feeding structure is arranged on the side surface of the second conveyor belt 2.1, the second feeding structure is used for conveying the first negative electrode sheet 2.3, and the second bottom separator material coiling machine 2.2 is used for conveying the separator at the bottom of the first negative electrode sheet 2.3;
wherein the second bottom diaphragm material coiling machine 2.2 comprises a second diaphragm roller 2.21 and a second positioning roller 2.22, a second tension roller 2.23 and a second support plate 2.24, wherein a second diaphragm roller 2.21 is arranged at the top of the second support plate 2.24, a servo motor drives the second diaphragm roller 2.21, the second diaphragm roller 2.21 is used for bearing a diaphragm material roll required by lamination, a second positioning roller 2.22 is vertically arranged on the second support plate 2.24, the second positioning roller 2.22 is vertical to the advancing direction of the second conveyer belt 2.1 and is abutted against the input end of the second conveyer belt 2.1, the second positioning roller 2.22 is used for positioning a diaphragm at the bottom, the second tension roller 2.23 is vertically arranged on the second support plate 2.24, the second tension roller 2.23 is arranged between the second diaphragm roller 2.21 and the second positioning roller 2.22, the second tension roller 2.23 is arranged obliquely above the second positioning roller 2.22, and the second tension roller 2.23 is used for regulating the tension of the diaphragm at the bottom;
a second base 2.4 is arranged at the lower part of the second conveying belt 2.1, second belt shafts 2.5 are respectively arranged at two ends of the second base 2.4, the second conveying belt 2.1 surrounds the two second belt shafts 2.5, a servo motor for driving the second belt shafts 2.5 is arranged in the second base 2.4, and the second belt shafts 2.5 at two ends drive the second conveying belt 2.1 to perform transmission;
evenly open on the second conveyer belt 2.1 has a plurality of second adsorption holes 2.6, and the inner chamber of second conveyer belt 2.1 passes through second vacuum pipeline 2.7 and vacuum pump intercommunication, and the vacuum pump passes through the air of second vacuum pipeline 2.7 extraction second conveyer belt 2.1 inner chamber to act on second adsorption holes 2.6, make second adsorption holes 2.6 realize the state of negative pressure on the second conveyer belt 2.1, and then adsorb the diaphragm on the second conveyer belt 2.1.
As shown in fig. 1, the first conveyor belt 1.1 and the second conveyor belt 2.1 in the two sets of lamination units are sequentially arranged in a straight line end to end, a transmission gap for the first conveyor belt 1.1 and the second conveyor belt 2.1 to transmit power is arranged at the joint of the first conveyor belt 1.1 and the second conveyor belt 2.1, the first feeding structure and the second feeding structure are sequentially arranged in a straight line, the first feeding structure is used for conveying positive plates, the second feeding structure is used for conveying negative plates, and the feeding structures of the positive plates and the feeding structures of the negative plates are arranged at intervals.
As shown in fig. 1, a top separator material coiling machine 3 is used for conveying the separator on the top of the electrode plate, and the top separator material coiling machine 3 is arranged above the last group of belt conveying output ends in the last group of lamination units;
as shown in fig. 5, the top membrane material rolling machine 3 comprises a third membrane roller 3.1, a third positioning roller 3.2, a third tension roller 3.3 and a third support plate 3.4, the top of the third support plate 3.4 is vertically provided with the third membrane roller 3.1, a servo motor drives the third membrane roller 3.1, the third membrane roller 3.1 is used for bearing membrane material rolls required by lamination, the third positioning roller 3.2 is vertically arranged on the third support plate 3.4, the third positioning roller 3.2 is vertical to the advancing direction of the second conveyer belts in the second group of lamination units and is abutted against the output end of the second conveyer belts in the second group of lamination units, the third positioning roller 3.2 is used for positioning the membrane at the bottom, the third tension roller 3.3 is vertically arranged on the third support plate 3.4, the third tension roller 3.3 is arranged between the third membrane roller 3.1 and the third positioning roller 3.2, the third tension roller 3.3 is arranged above the third positioning roller 3.2, the third tension roller 3.3 is used for adjusting the tension of the top diaphragm;
a cutting mechanism 3.5 is also arranged above the third positioning roller 3.2, and the cutting mechanism 3.5 is used for cutting the diaphragm;
the cutting mechanism 3.5 comprises a cutter frame 3.51, linear slide rails 3.52 are respectively arranged on the inner sides of the cutter frame 3.51, a pressing cylinder 3.54 drives the linear slide rails 3.52 to slide up and down along the inside of the cutter frame 3.51, a cutter 3.53 is arranged on the linear slide rails 3.52, and the cutter 3.53 is driven to slide up and down in the cutter frame 3.51 by the up-and-down sliding of the linear slide rails 3.52, so that the diaphragm can be cut off.
The working principle of the battery pole piece laminating device is as follows:
the principle of the invention is a linear circulation type lamination mode, a conveying belt is used for long-distance circulation transmission, a diaphragm is transmitted from an input end to an output end of the conveying belt, a positive plate is placed on the diaphragm while transmission is carried out, a layer of diaphragm is coated on the positive plate and is continuously transmitted along with the conveying belt, a negative plate is coated on the diaphragm on the positive plate while transmission is continued, transmission is carried out again, the positive plate and the negative plate are simultaneously and alternately coated, the linear circulation type lamination mode is realized, and the simultaneous implementation of a plurality of groups of laminations is realized by using the long distance of linear transmission.
The battery pole piece laminating device disclosed by the invention is simple in structure, realizes the spaced lamination of the positive and negative pole pieces, reasonably arranges the superposition of the positive and negative pole pieces through the transmission of the laminating mechanism, simultaneously superposes the positive and negative pole pieces and simultaneously carries out multiple steps, greatly improves the laminating efficiency, does not waste the operation time, has extremely high efficiency, stably operates, does not need secondary positioning, and greatly improves the yield and efficiency of products.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The utility model provides a lamination device of battery sheet which characterized in that: comprises a top diaphragm material coiling machine and at least one group of lamination units;
the lamination unit comprises a first lamination mechanism and a second lamination mechanism which have the same structure, and the first lamination mechanism and the second lamination mechanism are sequentially arranged from head to tail;
the lamination mechanism comprises a conveying belt, a feeding structure and a bottom membrane material rolling machine, the bottom membrane material rolling machine is arranged at the upper part of the conveying belt, and the feeding structure is arranged on the side surface of the conveying belt;
the feeding structure is used for conveying the positive plate or the negative plate;
the bottom membrane material rolling machine is used for conveying the membrane at the bottom of the electrode plate;
the top diaphragm material rolling machine is used for conveying diaphragms on the tops of the electrode plates, and the top diaphragm material rolling machine is arranged on the upper portion of a conveying belt of the lamination unit.
2. The lamination device for battery pole pieces, according to claim 1, wherein: the bottom membrane material rolling machine comprises a first membrane roller, a first positioning roller and a first supporting plate, wherein the first membrane roller is arranged at the top of the first supporting plate, the first membrane roller is driven by a servo motor, the first positioning roller is arranged on the first supporting plate, and the first positioning roller is perpendicular to the advancing direction of the conveying belt and offsets with the input end of the conveying belt.
3. The lamination device for battery pole pieces, according to claim 1, wherein: the top diaphragm material rolling machine comprises a third diaphragm roller, a third positioning roller and a third support plate, wherein the third diaphragm roller is arranged at the top of the third support plate, a servo motor drives the third diaphragm roller, the third positioning roller is arranged on the third support plate, and the third positioning roller is perpendicular to the advancing direction of the conveying belt and abuts against the output end of the conveying belt.
4. A lamination device for battery pole pieces, according to claim 2 or 3, characterized in that: the lower part of the conveying belt is provided with a base, two ends of the base are respectively provided with a belt shaft, and the conveying belt is wound outside the two belt shafts; a servo motor used for driving the belt shaft is arranged in the base.
5. The lamination device for battery pole pieces, according to claim 4, wherein: the conveying belt is evenly provided with adsorption holes, and the inner cavity of the conveying belt is communicated with a vacuum pump through a vacuum pipeline.
6. The lamination device for battery pole pieces, according to claim 5, wherein: the bottom diaphragm material rolling machine further comprises a first tension roller, the first tension roller is arranged on the first supporting plate, and the first tension roller is arranged between the first diaphragm roller and the first positioning roller.
7. The lamination device for battery pole pieces, according to claim 5, wherein: the top diaphragm material rolling machine further comprises a third tension roller, the third tension roller is arranged on the third supporting plate, and the third tension roller is arranged between the third diaphragm roller and the third positioning roller.
8. A lamination device for battery pole pieces, according to claim 6 or 7, characterized in that: and the upper part of the third positioning roller is also provided with a cutting mechanism, and the cutting mechanism is used for cutting off the diaphragm.
9. The lamination device for battery pole pieces, according to claim 8, wherein: the cutting mechanism comprises a cutter frame, linear slide rails are arranged inside two sides of the cutter frame, a cutter is arranged on each linear slide rail, and a pressing cylinder drives the cutter to move up and down.
10. A method for laminating a battery pole piece by using a laminating device of the battery pole piece according to any one of claims 1 to 9, which is characterized by comprising the following steps:
step 1: firstly, respectively placing a diaphragm material roll on a first diaphragm roller and a third diaphragm roller, then sequentially winding a diaphragm on the first diaphragm roller around a first tension roller and a first positioning roller and then spreading the diaphragm on a conveying belt, simultaneously sequentially winding a diaphragm on the third diaphragm roller around a third tension roller and a third positioning roller and then spreading the diaphragm on the conveying belt, and finally placing a positive plate and a negative plate on a feeding structure;
step 2: starting a vacuum pump to enable the adsorption holes to adsorb the diaphragm on the conveying belt;
and step 3: simultaneously starting servo motors for driving the belt shaft, the first diaphragm roller and the third diaphragm roller, then tensioning the bottom diaphragm through the first tension roller, and finally tensioning the top diaphragm through the third tension roller;
and 4, step 4: the first lamination mechanism performs lamination: the conveying belt drives the bottom diaphragm to convey from the input end to the output end, and meanwhile, the positive plate is conveyed to the upper part of the bottom diaphragm through the feeding structure;
and 5: the second lamination mechanism performs lamination: in the step 4, the lamination completed by the first lamination mechanism is transmitted to the input end of the conveying belt of the second lamination mechanism from the output end of the conveying belt of the first lamination mechanism, the conveying belt of the second lamination mechanism drives the bottom diaphragm of the first lamination mechanism to enter the second lamination mechanism, the bottom diaphragm of the first lamination mechanism is transmitted from the input end of the conveying belt of the second lamination mechanism to the output end of the conveying belt of the second lamination mechanism, and when the bottom diaphragm of the second lamination mechanism covers the positive plate, the negative plate is transmitted to the upper part of the bottom diaphragm of the second lamination mechanism through the feeding structure, namely, the positive and negative lamination of a primary pole plate is completed;
step 6: repeating the steps (4) and (5) until the set lamination layer number is finished;
and 7: and finally, the lamination passes through a second positioning roller and is cut off by a cutter to complete lamination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911213823.1A CN110890586A (en) | 2019-12-02 | 2019-12-02 | Battery pole piece lamination device and lamination method |
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| CN112151880A (en) * | 2020-10-13 | 2020-12-29 | 苏州金丝港智能发展股份有限公司 | Lithium battery cell lamination device and use method thereof |
| CN112151879A (en) * | 2020-10-13 | 2020-12-29 | 苏州金丝港智能发展股份有限公司 | Lithium battery pole piece lamination equipment and lamination method thereof |
| CN112186265A (en) * | 2020-10-13 | 2021-01-05 | 苏州金丝港智能发展股份有限公司 | Special-shaped lithium battery lamination machine and lamination process thereof |
| CN112186234A (en) * | 2020-10-13 | 2021-01-05 | 苏州金丝港智能发展股份有限公司 | Battery cell lamination equipment of combined battery plate and lamination method thereof |
| CN113644310A (en) * | 2021-08-12 | 2021-11-12 | 远景动力技术(江苏)有限公司 | Preparation method of multi-core stack and battery cell |
| CN114883660A (en) * | 2022-06-14 | 2022-08-09 | 广州明森合兴科技有限公司 | Efficient lithium cell electricity core lamination machine |
| WO2023184674A1 (en) * | 2022-04-02 | 2023-10-05 | 温在东 | High-speed lamination stacking machine for laminated cell, and lamination stacking method |
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| CN114883660A (en) * | 2022-06-14 | 2022-08-09 | 广州明森合兴科技有限公司 | Efficient lithium cell electricity core lamination machine |
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