CN117878373A - Battery film laminating device for lithium battery production - Google Patents
Battery film laminating device for lithium battery production Download PDFInfo
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- CN117878373A CN117878373A CN202410053034.0A CN202410053034A CN117878373A CN 117878373 A CN117878373 A CN 117878373A CN 202410053034 A CN202410053034 A CN 202410053034A CN 117878373 A CN117878373 A CN 117878373A
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- Prior art keywords
- battery
- baffle
- assembly
- adsorption
- film laminating
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 61
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 55
- 238000010030 laminating Methods 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims description 60
- 238000001179 sorption measurement Methods 0.000 claims abstract description 66
- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 238000005520 cutting process Methods 0.000 claims description 34
- 238000003825 pressing Methods 0.000 claims description 29
- 239000012528 membrane Substances 0.000 claims description 16
- 230000007306 turnover Effects 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 3
- 238000003475 lamination Methods 0.000 description 44
- 238000000034 method Methods 0.000 description 27
- 230000008569 process Effects 0.000 description 21
- 238000013461 design Methods 0.000 description 17
- 230000009471 action Effects 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 230000032258 transport Effects 0.000 description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
- B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
- B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
- B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
- B26D1/065—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates for thin material, e.g. for sheets, strips or the like
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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
-
- 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
- H01M10/0468—Compression means for stacks of electrodes and separators
-
- 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
-
- 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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Primary Cells (AREA)
Abstract
The invention relates to the technical field of lithium batteries and discloses a battery film laminating device for producing the lithium batteries, which comprises a supporting top plate, wherein a sliding rail is arranged on the supporting top plate, a driving assembly is arranged on the sliding rail, an adsorption assembly is arranged at the lower end of the driving assembly, a baffle is arranged on a platform at the end part of a transmission belt at the corresponding position under the adsorption assembly through a rotating shaft, the transmission belt conveys an upper layer sheet to the baffle through a driver, a roller transmission assembly is arranged under the transmission belt.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to a battery film laminating device for lithium battery production.
Background
Lithium batteries are a type of battery using a nonaqueous electrolyte solution with lithium metal or a lithium alloy as a negative electrode material. The earliest lithium cells were from the great inventor edison and used the reaction L i +mno2=limθ2, which is a redox reaction. The chemical characteristics of lithium metal are very active, so that the processing, storage and use of lithium metal have very high requirements on environment. With the development of science and technology, lithium batteries have become the mainstream. Lithium batteries can be broadly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The lithium metal battery of the fifth generation product of the rechargeable battery is born in 1996, and the safety, the specific capacity, the self-discharge rate and the cost performance ratio of the lithium metal battery are all superior to those of the lithium ion battery. At the same weight, the energy density of the lithium battery is 2.5 times that of the nickel-cadmium battery and 1.8 times that of the nickel-hydrogen battery. Therefore, the lithium battery has remarkable advantages in energy density, and can provide longer endurance mileage for applications such as electric automobiles. The charging time of the lithium battery is relatively short, and the lithium battery can be filled with 80% in 30-50 minutes. This is much faster than the charge time of nickel-cadmium and nickel-hydrogen batteries, greatly improving the convenience of use. Under the correct charge and discharge conditions, the service life of the lithium battery can reach more than 500 times. This is much longer than the life of nickel-cadmium and nickel-hydrogen batteries, reducing the frequency and cost of battery replacement for users. The lithium battery does not contain heavy metals and toxic and harmful substances, and is environment-friendly. The waste lithium batteries can be recycled by recycling. The current lithium batteries are relatively costly, especially in terms of positive electrode materials, electrolytes, separators, and the like. This makes lithium batteries considerably higher in price than nickel-cadmium batteries and nickel-hydrogen batteries. Because the voltage platform of the lithium battery is higher, overcharge and overdischarge can cause internal short circuit of the battery, and combustion or explosion is caused. Therefore, the protection measure for the overcharge and the overdischarge is very high, and a special control circuit and a safety design are required. Lithium batteries are sensitive to temperature and at high temperatures can accelerate the internal reaction rate of the battery, leading to reduced battery performance and safety problems. In addition, low temperature also affects the charge and discharge performance and capacity of the lithium battery.
In the prior art, lithium battery needs to laminate the laminating to the battery piece in the in-process of making, insert one deck battery diaphragm between anode plate and top layer piece, perhaps attach the multilayer battery pole piece, thereby ensure the automatic conduction of isolated electron of battery under high temperature ring charge state, prevent to explode, but the attaching process is often comparatively loaded down with trivial details, it is attached through artifical or pressfitting through the reel, it is higher to carry out the attaching cost through the manual work, work efficiency is low, battery pole piece often can be drawn by the roller when pressing through the reel and lead to the laminating battery piece to be in the state of being tightly always, after the pressfitting is accomplished because internal stress is retrieved, the gap can appear in the pressfitting of battery piece, can not satisfy the conversion of multiple utmost point layer through the reel pressfitting, only can pressfitting comparatively single battery layer. In the manufacturing process of lithium ion batteries, when the battery cell is injected with electrolyte, a local area of the diaphragm is wrinkled, and bubbles remain between the diaphragm and the pole piece. The folds on the diaphragm and the defects of the interface between the diaphragm and the pole piece can cause uneven distribution of the internal resistance of the battery, and partial overcharge or overdischarge can be caused in the battery circulation process at the place with low internal resistance, so that the consistency and the circulation performance of the battery are affected.
Disclosure of Invention
(one) solving the technical problems
Aiming at the defects of the prior art, the invention provides a battery film laminating device for lithium battery production, which is provided with automatic lamination of battery pieces, can realize lamination of various layered battery pieces, can prevent the battery pieces from being stretched during lamination, can avoid bubbles generated between layers during attachment, and solves the problems that the attachment of various layers cannot be realized during the attachment of the battery pieces and bubbles are easy to occur during the attachment.
(II) technical scheme
In order to realize the purpose of automatically laminating the battery pieces, laminating various layered battery pieces and avoiding bubbles generated between the laminated pieces during attachment, the invention provides the following technical scheme: the utility model provides a lithium cell production is with battery membrane stromatolite device, includes the supporting roof, be provided with the slide rail on the supporting roof, be provided with drive assembly on the slide rail, the drive assembly lower extreme is provided with the adsorption component, be provided with the baffle through the pivot on the platform of the transmission band tip position of corresponding position under the adsorption component, the transmission band pass through the driver to the baffle position carries the top layer piece, baffle and pivot link are provided with the upset spring, works as after the adsorption component descends, promote the baffle with the pivot central line is rotatory as the centre of a circle, works as after the adsorption component rises, the baffle passes through the upset spring returns to the right, the transmission band below is provided with roller transmission assembly, be provided with the electrode slice bottom plate on the roller transmission assembly.
Preferably, the adsorption component comprises a shell, the lower end of the shell is provided with a bottom plate, the center of the bottom plate is provided with an air bag, the bottom plate is connected with an air pressure cavity arranged in an inner cavity of the shell, an air pressure channel is arranged between the outer wall of the air pressure cavity and the shell, a lifting piston is arranged in the air pressure channel, the lifting piston is connected with a pushing block arranged in the center of the bottom plate, and adsorption holes are formed in the periphery of the air pressure cavity and are communicated with the inside of the air pressure cavity.
Preferably, the roller transmission assembly comprises a transmission table, a pressing table is arranged at the position of the transmission table right below the baffle, and the left end and the right end of the pressing table are respectively connected with the roller on the transmission table through a conduction band.
Preferably, a lower layer sheet is arranged on the electrode sheet bottom plate.
Preferably, the baffle is provided with a knife slot.
Preferably, a diaphragm pressing block is arranged on the conveying belt at the end part of the baffle, and a cutting knife is arranged below the diaphragm pressing block.
Preferably, the cutting blade is matched to the blade slot size.
Preferably, the diaphragm is fixed by a winding shaft provided at an end of the conveyor belt.
(III) beneficial effects
Compared with the prior art, the invention provides a battery film laminating device for lithium battery production, which has the following beneficial effects:
1. this battery membrane laminating device for lithium cell production, through the setting of adsorption component, make the device can be when the pressfitting battery piece, through pushing down the synchronous with next section diaphragm pull to the baffle of process, realize the quick material loading of diaphragm, simultaneously through placing upper strata piece and lower stratum piece on same vertical direction and carry out the pressfitting, this kind of pressfitting mode can avoid upper strata piece and lower stratum piece to be crooked when the pressfitting, can realize the plane pressfitting, the pressfitting quality of battery piece can be ensured to the plane pressfitting more even and stable, compare in traditional carry out pull pressfitting through the axial roller, this kind of pressfitting is placed and can be avoided the battery piece to appear by tensile state when being pressed, make the battery piece be in relaxation state when being pressed for the battery piece that prepares can keep better performance, the pressfitting precision of battery piece can be guaranteed to upper and lower pressfitting simultaneously, thereby the wholeness of battery has been improved. Meanwhile, the number of the conveyed lamination layers is changed, so that flexible conversion of the middle lamination layers can be realized, and battery lamination sheets with different requirements can be manufactured. The battery lamination sheets with different requirements can be manufactured according to market requirements, and the diversified requirements of the market are met.
2. This battery membrane laminating device for lithium cell production is through the setting of gasbag for the device is when carrying out the laminating, can be at first through the center of gasbag and by the battery piece center contact of pressfitting, is in the diffusion pressfitting all around with the center, this makes the battery piece be located the center by the position of pressfitting at first, from the center to diffusion all around, and inside bubble appears when carrying out the pressfitting can be avoided to such pressfitting mode, has improved the overall quality of battery piece. The high-efficiency and accurate lamination effect is realized, and the quality of the battery piece is improved. In the pressing process, the air bag plays a crucial role. The pressing process is ensured to start from the center and to be carried out in a manner of spreading from the center to the periphery. This center-to-perimeter diffusion bonding has significant advantages over conventional bonding. Firstly, the lamination mode of diffusing from the center to the periphery can avoid bubbles in the battery piece. The device ensures the uniform distribution of pressure in the pressing process through the special design of the air bag, avoids the generation of air bubbles, and improves the quality and stability of the battery piece. Secondly, the lamination mode of diffusing from the center to the periphery can improve lamination efficiency. Because the center of the air bag is contacted with the center of the battery piece at first, the pressure can be rapidly diffused, and the large-area lamination is realized. The press-fit time is shortened, the production efficiency is improved, and the uniformity and consistency of the press-fit effect are ensured. Through the design of the adsorption component, the battery piece can be fast and accurately fixed, and the pressing precision and the production efficiency are further improved. Meanwhile, the bending problem in the traditional process is avoided by the pressing mode in the vertical direction, the planar pressing is realized, and the pressing quality and the stability of the battery performance are further improved. In addition, the flexible lamination layer number adjusting function enables manufacturers to rapidly adjust lamination of battery pieces with different thicknesses according to market demands, flexibility is improved, and diversified demands of the market are met.
3. According to the battery film laminating device for lithium battery production, automatic adsorption and positioning of the diaphragm and the upper layer sheet are realized through the mechanisms such as the sliding rail, the driving assembly and the adsorption assembly, the degree of automation of the production process is improved, the manual intervention is reduced, and the production efficiency is improved. The adsorption component in the device can accurately adsorb the diaphragm and the upper layer sheet at the required position, and meanwhile, the baffle plate can be automatically corrected due to the design of the overturning spring, so that the positioning precision is further improved, and the product quality is ensured. The transmission belt and the roller transmission assembly in the device can adapt to diaphragms and upper layers of different specifications, so that the device has wider application range and can meet different production requirements. The overturning spring in the device is designed to enable the baffle to automatically rotate under the action of the adsorption component, so that safety accidents caused by improper manual operation are avoided. Simultaneously, the cutting knife in the device can automatically complete the cutting of the diaphragm and the upper layer sheet, and the potential safety hazard possibly brought by manual cutting is reduced. The device can realize automated production, reduces manual intervention and labor cost, improves production efficiency and product quality, and further saves production cost.
4. This battery membrane stromatolite device for lithium cell production cuts the lifting to the battery piece that the pressfitting is good through the cutting knife cooperation baffle to realize detecting the purpose of pressfitting dynamics to the battery piece after the pressfitting, if the battery piece is lifted its top layer piece and is separated again with the diaphragm down, then indicate that pressfitting dynamics is insufficient, still there is great clearance between the battery piece, need readjust pressfitting dynamics, if the battery piece normally falls down, then indicate that pressfitting quality is qualified, this makes the device can realize the preliminary quality inspection to the battery piece, can guarantee the output quality of battery piece at certain degree.
Drawings
Fig. 1 is a schematic perspective view of a battery film laminating apparatus for producing a lithium battery according to the present invention;
fig. 2 is a schematic view showing a perspective structure of a lower end face of an adsorption assembly of a battery film laminating device for producing a lithium battery according to the present invention;
fig. 3 is a schematic perspective view of the upper end surface of the adsorption assembly of the battery film lamination device for producing lithium batteries in the invention;
fig. 4 is a sectional view of an adsorption assembly of a battery film laminating apparatus for lithium battery production in the present invention;
fig. 5 is a front view of a battery film lamination apparatus for lithium battery production in the present invention;
fig. 6 is a schematic diagram showing a structure of a battery film laminating device for producing a lithium battery before lamination of a battery sheet;
fig. 7 is a schematic diagram of a structure of a battery film laminating device for producing a lithium battery during lamination of battery sheets;
fig. 8 is a schematic diagram of a process of cutting a separator after laminating a battery sheet in the battery film laminating device for producing a lithium battery according to the present invention;
fig. 9 is a schematic view showing the structure of the battery film laminating device for producing a lithium battery after the lamination and cutting of the battery sheet are completed.
Fig. 10 is a schematic view showing a linear-transmission three-dimensional structure of a battery film lamination device for lithium battery production in the present invention.
Fig. 11 is an enlarged schematic view of the structure at a in fig. 10 of the battery film lamination apparatus for lithium battery production in the present invention.
In the figure: 1-supporting top plate, 2-sliding rail, 3-driving component, 4-adsorption component, 5-transmission belt, 6-baffle, 7-cutting knife, 8-rotating shaft, 9-turnover spring, 10-diaphragm compressing block, 11-roller transmission component, 12-electrode plate bottom plate, 13-upper layer plate, 14-lower layer plate, 15-diaphragm, 401-shell, 402-bottom plate, 403-air bag, 404-air pressure cavity, 405-air pressure channel, 406-lifting piston, 407-pushing block, 408-adsorption hole, 501-rolling shaft, 601-knife groove, 1101-transmission table and 1102-pressing table.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
referring to fig. 1, the battery film laminating device for lithium battery production comprises a supporting top plate 1, a sliding rail 2 is arranged on the supporting top plate 1, a driving component 3 is arranged on the sliding rail 2, an adsorption component 4 is arranged at the lower end of the driving component 3, a baffle 6 is arranged on a platform at the end position of a transmission belt 5 at the corresponding position under the adsorption component 4 through a rotating shaft 8, the transmission belt 5 conveys an upper layer sheet 13 to the position of the baffle 6 through a driver, a turnover spring 9 is arranged at the connecting end of the baffle 6 and the rotating shaft 8, the baffle 6 is pushed to rotate by taking the central line of the rotating shaft 8 as the center of a circle after the adsorption component 4 descends, the baffle 6 is returned through the turnover spring 9 after the adsorption component 4 ascends, and a cutter groove 601 is formed in the baffle 6. The diaphragm compacting block 10 is arranged on the conveyor belt 5 at the end part of the baffle 6, and the cutting knife 7 is arranged below the diaphragm compacting block 10. A roller transmission assembly 11 is arranged below the transmission belt 5, and an electrode plate bottom plate 12 is arranged on the roller transmission assembly 11.
The device mainly comprises a supporting top plate 1, and a sliding rail 2 is arranged on the supporting top plate. The slide rail 2 serves to ensure that the drive assembly 3 moves in the correct path. The lower end of the driving component 3 is provided with an adsorption component 4 for adsorbing and fixing the battery piece. And a baffle 6 is arranged on the conveyor belt 5 at a corresponding position right below the adsorption component 4 through a rotating shaft 8. The function of the conveyor belt 5 is to continuously transport the separator 15 with the upper layer sheet 13. When the adsorption assembly 4 descends, the adsorption assembly pushes the baffle 6 to rotate by taking the central line of the rotating shaft 8 as the center of a circle. The purpose of this action is to ensure that the diaphragm 15 and upper ply 13 are properly positioned and aligned. While ensuring that the next section of membrane 15 is pulled onto the baffle 6. When the suction assembly 4 is raised, the baffle 6 is automatically aligned by the return spring 9 in preparation for receiving the next battery piece. A cutting knife 7 is also arranged on the baffle 6 assembly at one side of the conveyor belt 5. The function of this assembly is to precisely cut the cells after they are stacked, ensuring that each cell is independent and complete. Also below the conveyor belt 5 is a roller conveyor assembly 11, on which an electrode sheet bottom plate 12 is arranged. The electrode sheet base 12 functions to carry and transport the laminated battery sheet to the next process flow.
During operation of the whole device, first, the separator 15 and the upper layer sheet 13 are brought to the respective positions by the conveyor belt 5. Then, the adsorption assembly 4 descends to fix the battery cell to the baffle 6. Next, the driving unit 3 moves to transfer the barrier 6 having the attached battery pieces to the next process position. After reaching the designated position, the cutter 7 cuts to complete the manufacture of the single battery piece. This process is then repeated until all of the battery cells are stacked.
The battery film laminating device for lithium battery production has the advantages of high precision, high efficiency, flexibility, excellent heat dissipation performance, safety and the like. Through accurate mechanical design and electrical control, the device can fix the battery piece fast, accurately, improves the precision and the production efficiency of pressfitting. Meanwhile, the bending problem in the traditional process is avoided by the pressing mode in the vertical direction, the planar pressing is realized, and the pressing quality and the stability of the battery performance are further improved. In addition, the device has nimble pressfitting layer number adjustment function, can be according to the pressfitting of market demand fast adjustment different thickness battery piece, has strengthened the flexibility and has satisfied the diversified demand in market. The excellent heat dissipation performance and safety are also important advantages of the device, and the production risk can be effectively reduced.
Referring to fig. 2-4, the adsorption assembly 4 includes a housing 401, a bottom plate 402 is disposed at a lower end of the housing 401, an air bag 403 is disposed at a center of the bottom plate 402, the bottom plate 402 is connected to an air pressure cavity 404 disposed in an inner cavity of the housing 401, an air pressure channel 405 is disposed between an outer wall of the air pressure cavity 404 and the housing 401, a lifting piston 406 is disposed in the air pressure channel 405, the lifting piston 406 is connected to a pushing block 407 disposed at a center of the bottom plate 402, and adsorption holes 408 are disposed at an outer periphery of the air pressure cavity 404 and are communicated with an inner portion of the air pressure cavity 404.
Through setting up gasbag 403 and atmospheric pressure chamber 404, the absorption subassembly 4 can produce great adsorption affinity, ensures that the battery piece obtains firm fixed at pressfitting in-process, improves pressfitting precision and efficiency. The lifting piston 406 is arranged so that the air pressure in the air pressure cavity 404 can be changed rapidly, thereby realizing quick response of the adsorption assembly 4. When the battery piece is required to be adsorbed or released, the adsorption component 4 can rapidly react, and the production efficiency is improved. The design of the air pressure channel 405 and the air pressure cavity 404 enables the air pressure to be uniformly distributed on the air bag 403, thereby ensuring the uniformity of the adsorption force. Meanwhile, by adjusting the air pressure in the air pressure cavity 404, the accurate control of the adsorption force can be realized, and the pressing precision and stability are further improved. The structural design of the adsorption component 4 makes the adsorption component not easy to wear and fatigue during repeated use. In addition, the choice of materials for the housing 401 and the base plate 402 also ensures the durability and stability of the adsorbent assembly 4, reducing maintenance costs and service life. By adjusting the internal structure of the air pressure chamber 404 and the size of the air pressure channel 405, flexible adjustment of the adsorption force of the adsorption assembly 4 can be achieved. The design enables the adsorption component 4 to adapt to battery pieces with different specifications and materials, and improves the adaptability and flexibility of the device.
Referring to fig. 5, the roller conveying assembly 11 includes a conveying table 1101, a pressing table 1102 is disposed at a position of the conveying table 1101 directly below the baffle 6, and left and right ends of the pressing table 1102 are respectively connected with rollers on the conveying table 1101 through conductive tapes.
Through the cooperation of cylinder and conduction band, realized the high-efficient transmission of battery membrane. The rotation of the roller drives the conductive belt to move the battery film on the transmission table 1101 quickly and stably, thereby improving the production efficiency. The design of the lamination station 1102 ensures accurate lamination of the battery film during transport. At the lamination station 1102, the battery film is subjected to further lamination processing, enhancing the stability of the laminate and the performance of the battery. The roller conveyor assembly 11 can be flexibly adjusted according to production requirements. By changing the configuration of the roller and the conduction band, the device can adapt to the transmission of battery films with different specifications and numbers, and the adaptability and the flexibility of the device are enhanced. The roller transmission assembly 11 has simple structural design and stable operation. The design reduces the possibility of faults and improves the reliability and stability of the production process. The roller transfer assembly 11 is relatively simple in structure and convenient to disassemble and maintain. When faults occur or maintenance is needed, the system can be quickly checked and repaired, and maintenance cost and time are reduced.
Referring to fig. 6-9, the electrode sheet base 12 has a lower sheet 14 disposed thereon. The baffle 6 is provided with a knife slot 601. The diaphragm compacting block 10 is arranged on the conveyor belt 5 at the end part of the baffle 6, and the cutting knife 7 is arranged below the diaphragm compacting block 10. The cutting blade 7 is matched in size to the blade slot 601.
The electrode slice bottom plate 12 integrates the lower layer slice 14, simplifies the production flow and improves the production efficiency. By disposing the lower layer sheet 14 on the electrode sheet base 12, lamination and dicing can be completed in one step, reducing the number of operating steps and time. The design of the cutting knife 7 allows automation of the whole cutting process. Through the cooperation with conveyer belt 5 and tight spring in top, cutting knife 7 can accomplish the cutting task voluntarily, has reduced manual intervention and operation degree of difficulty. During the cutting process, the diaphragm 15 is ensured to be tightly attached to the lower layer sheet 14, and the cutting precision and quality are improved. The design of the whole cutting knife 7 allows for safety and avoids possible hazards and accidents during the cutting process. Meanwhile, the production safety is improved.
A diaphragm pressing block 10 is arranged on the conveying belt 5 at the end part of the baffle 6. A cutting knife 7 is arranged below the diaphragm pressing block 10. The membrane 15 is fixed by a take-up reel 501 provided at the end of the conveyor belt 5.
The cutting blade 7 is matched in size to the blade slot 601.
The diaphragm pressing block 10 can tightly press the diaphragm 15 on the baffle 6, so that the diaphragm 15 is ensured to be stable in the transmission and pressing processes, and the phenomena of displacement and wrinkling are reduced. This helps to improve the accuracy of the press fit and the quality of the product. The provision of the cutter 7 enables the device to accurately cut the membrane 15, ensuring that each cell is independent and complete. This precise cutting pattern helps to improve the electrical performance and stability of the battery. By fixing the diaphragm 15 by the take-up shaft 501, stability and continuity of the diaphragm 15 during transportation can be ensured. The design of the take-up shaft 501 also makes replacement and adjustment of the diaphragm 15 convenient and quick, improving production efficiency. This design gives the whole device a high flexibility. The positions and the sizes of the diaphragm pressing block 10, the cutting knife 7 and the winding shaft 501 can be conveniently adjusted according to different production requirements so as to adapt to the production of batteries with different specifications and numbers. The whole transmission and cutting process realizes automation, and reduces the manual intervention and operation difficulty. This helps to improve production efficiency, reduce production costs, and ensure consistency of product quality.
Embodiment two:
please refer to fig. 10-11: the utility model provides a lithium cell production is with battery membrane stromatolite device, includes supporting roof 1, be provided with slide rail 2 on the supporting roof 1, be provided with actuating assembly 3 on the slide rail 2, actuating assembly 3 lower extreme is provided with adsorption component 4, be provided with baffle 6 through pivot 8 on the platform of the transmission band 5 tip position of corresponding position under the adsorption component 4, transmission band 5 pass through the driver to baffle 6 position carries upper layer piece 13, baffle 6 and pivot 8 link are provided with upset spring 9, works as after the adsorption component 4 descends, promote baffle 6 with pivot 8 central line is rotatory as the centre of a circle, works as after the adsorption component 4 rises, baffle 6 passes through upset spring 9 is right, transmission band 5 below is provided with cylinder transmission component 11, be provided with electrode slice bottom plate 12 on the cylinder transmission component 11.
Specific examples of the battery film lamination device for lithium battery production during the linear conveyance are as follows:
starting and preparing: first, the driver is started to start the operation of the conveyor belt 5. At the same time, the suction assembly 4 is ensured to be in the initial position, ready for the suction operation.
Adsorption and positioning: when the upper sheet 13 reaches below the suction unit 4, the driving unit 3 drives the suction unit 4 to move downward. The adsorption member 4 firmly adsorbs the upper sheet 13 to the lower surface thereof by adsorption force. At this time, the flip spring 9 is in an inactive state.
Baffle 6 rotates and transports: after the adsorption is finished, the driving assembly 3 continues to drive the adsorption assembly 4 to move downwards, and simultaneously pushes the baffle 6 to rotate by taking the central line of the rotating shaft 8 as the center of a circle. This action positions the upper ply 13 in the correct position ready for the next lamination or cutting operation.
Cutting operation: when the upper sheet 13 is positioned, the cutter 7 is operated to cut the separator 15 in cooperation with the cutter groove 601.
Roller transport and lamination: after the cutting is completed, the roller transfer assembly 11 is started. The roller drives the conduction belt to rotate, and the pressed battery piece is transmitted to the next working procedure or the lamination position.
Repeating the steps: the above steps are repeated, and the sucking, positioning, cutting and transferring operations are continuously performed until the desired number of stacks is completed.
And (3) stacking: when all the required number of stacks is completed, the conveyor belt 5 sends the complete stack to the next process or storage location.
Cleaning and maintaining: during continuous production, necessary cleaning and maintenance work is regularly performed to ensure normal operation of the device and to extend the service life.
In the whole linear transmission process, the battery film laminating device for lithium battery production realizes high-efficiency, accurate and reliable laminating and cutting operation through accurate mechanical movement and automatic control. The device adopts a continuous automatic production mode, can realize rapid and efficient battery film lamination, greatly improves the production efficiency and reduces the production cost. The device can be quickly adjusted according to the battery films with different specifications and requirements, so that the switching of various different lamination schemes is realized, and different production requirements are met. The device adopts environment-friendly materials and energy-saving design, can effectively reduce energy consumption and emission in the production process, and accords with the current environment-friendly production concept. The device has perfect safety protection measures and fault diagnosis functions, can timely discover and process abnormal conditions in the production process, and ensures safe and reliable production. The device realizes full-automatic operation, including manual work piece, follow-up pole piece position correction and lamination process etc. has reduced manual intervention and operation degree of difficulty, has improved production efficiency and product quality. The device adopts the technical means of single cantilever structural design, automatic constant tension control of coil stock isolation film, automatic correction control and the like, realizes accurate lamination control and position adjustment, and further improves the quality and stability of products.
Working principle: in the operation process of the device, the upper layer sheet 13 is fed by the conveying belt 5, the diaphragm 15 is fed by the drawing of the adsorption component 4, the adsorption component 4 firstly moves through the driving component 3 and the sliding rail 2, the upper pressing sheet 13 is adsorbed through the adsorption holes 408 on the bottom plate 402, in the adsorption process, firstly, the adsorption component 4 is lowered until the bottom plate 402 and the upper layer sheet 13 are mutually attached, then the pushing block 407 is controlled to rise, the volume of the air pressure cavity 404 is increased, the air pressure is reduced, thereby the upper layer sheet 13 is attached to the bottom plate 402 by external air pressure, the adsorption component 4 is driven to the upper end of the baffle 6 again, the adsorption component 4 carrying the upper layer sheet 13 is controlled to be lowered until the diaphragm 15 attached to the upper surface of the baffle 6 is lowered, then the lifting piston 406 is controlled to rise, the diaphragm 15 is adsorbed through the adsorption holes 408 arranged on the periphery of the bottom plate 402 as the principle of the air pressure cavity 404, at this time, the adsorption assembly 4 is continuously controlled to descend to push the baffle 6 to rotate, meanwhile, as the membrane 15 is adsorbed, the membrane 15 is driven to downwards pump by the adsorption assembly 4 to realize feeding of the membrane 15, when the membrane 15 on the adsorption assembly 4 is attached to the lower layer sheet 14 on the laminating table 1102, a layer of membrane 15 is attached to the baffle 6 again, at the same time, the pushing block 407 is downwards controlled to descend so that the air bag 403 is pushed downwards, the center of the air bag 403 is firstly contacted with the upper layer sheet 13, the pushing block 407 is continuously pushed to descend, so that the whole battery piece is laminated by the air bag 403, the adsorption assembly 4 is controlled to ascend, the baffle 6 is lifted up by rotating through the overturning spring 9 after the ascending, the laminated battery piece is lifted up after the baffle 6 is lifted up, if the laminating force is enough, the laminated sheets and the membrane 15 are not separated from each other, if the lamination quality is qualified, if the lamination sheet is separated from the diaphragm, the lamination quality is unqualified, the lamination force is required to be readjusted, the preliminary quality inspection of the battery sheet is realized, the diaphragm 15 positioned at the position of the upper cutter groove 601 of the baffle plate 6 is cut by the cutting cutter 7, the battery sheet falls freely after the diaphragm 15 is cut off, the lower roller transmission assembly 11 is used for transmission when falling, the upper lamination sheet 13 is pressed at the lower end of the battery sheet after the battery sheet falls, the battery sheet can be overturned after lamination, the overturned battery sheet can be subjected to secondary lamination, the lamination of the multi-layer battery sheet is realized, the conversion of different layers of lamination sheets and the diaphragm 15 is realized, the application range is wider, and when the baffle plate 6 is overturned to be horizontal, the diaphragm 15 positioned on the baffle plate 6 is pressed between the baffle plate 6 and the diaphragm compression block 10, and the cyclic lamination of the primary battery sheet is completed.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides a lithium cell production is with battery membrane stromatolite device, includes supporting roof (1), be provided with slide rail (2) on supporting roof (1), be provided with drive assembly (3), its characterized in that on slide rail (2): the novel lifting device is characterized in that an adsorption assembly (4) is arranged at the lower end of the driving assembly (3), a baffle (6) is arranged on a platform at the end position of a transmission belt (5) at the corresponding position under the adsorption assembly (4) through a rotating shaft (8), the transmission belt (5) conveys an upper layer sheet (13) to the position of the baffle (6) through a driver, a turnover spring (9) is arranged at the connecting end of the baffle (6) and the rotating shaft (8), the baffle (6) is pushed to rotate by taking the central line of the rotating shaft (8) as the center of a circle after the adsorption assembly (4) descends, the baffle (6) is straightened through the turnover spring (9), a roller transmission assembly (11) is arranged under the transmission belt (5), and an electrode sheet bottom plate (12) is arranged on the roller transmission assembly (11).
2. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: the adsorption component (4) comprises a shell (401), a bottom plate (402) is arranged at the lower end of the shell (401), an air bag (403) is arranged at the center of the bottom plate (402), the bottom plate (402) is connected with an air pressure cavity (404) arranged in an inner cavity of the shell (401), an air pressure channel (405) is arranged between the outer wall of the air pressure cavity (404) and the shell (401), a lifting piston (406) is arranged in the air pressure channel (405), the lifting piston (406) is connected with a pushing block (407) arranged at the center of the bottom plate (402), and adsorption holes (408) are formed in the periphery of the air pressure cavity (404) and are communicated with the inside of the air pressure cavity (404).
3. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: the roller transmission assembly (11) comprises a transmission table (1101), a pressing table (1102) is arranged at the position of the transmission table (1101) right below the baffle plate (6), and the left end and the right end of the pressing table (1102) are respectively connected with rollers on the transmission table (1101) through conduction bands.
4. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: the electrode slice bottom plate (12) is provided with a lower layer slice (14).
5. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: a knife groove (601) is formed in the baffle plate (6).
6. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: the diaphragm pressing block (10) is arranged on the conveying belt (5) at the end part of the baffle plate (6), and the cutting knife (7) is arranged below the diaphragm pressing block (10).
7. The battery film laminating apparatus for lithium battery production according to claim 6, wherein: the cutting knife (7) is matched with the knife groove (601) in size.
8. The battery film laminating apparatus for lithium battery production according to claim 1, wherein: the diaphragm (15) is fixed by a winding shaft (501) arranged at the end part of the transmission belt (5).
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