CN112635700B - Device for preparing battery pole group, method for preparing battery pole group, and battery pole group - Google Patents
Device for preparing battery pole group, method for preparing battery pole group, and battery pole group Download PDFInfo
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- CN112635700B CN112635700B CN202011509069.9A CN202011509069A CN112635700B CN 112635700 B CN112635700 B CN 112635700B CN 202011509069 A CN202011509069 A CN 202011509069A CN 112635700 B CN112635700 B CN 112635700B
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- 238000000034 method Methods 0.000 title claims description 72
- 238000010438 heat treatment Methods 0.000 claims abstract description 245
- 230000007246 mechanism Effects 0.000 claims abstract description 158
- 238000004519 manufacturing process Methods 0.000 claims abstract description 54
- 238000003825 pressing Methods 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 238000000465 moulding Methods 0.000 claims abstract description 12
- 238000003475 lamination Methods 0.000 claims description 115
- 230000008569 process Effects 0.000 claims description 62
- 238000007664 blowing Methods 0.000 claims description 40
- 238000004321 preservation Methods 0.000 claims description 27
- 238000005192 partition Methods 0.000 claims description 17
- 230000000712 assembly Effects 0.000 claims description 6
- 238000000429 assembly Methods 0.000 claims description 6
- 238000004146 energy storage Methods 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 abstract description 21
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052744 lithium Inorganic materials 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 27
- 238000007493 shaping process Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 10
- 238000001179 sorption measurement Methods 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000002788 crimping Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000012797 qualification Methods 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0435—Rolling or calendering
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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
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion 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
- H01M10/058—Construction or manufacture
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/043—Processes of manufacture in general involving compressing or compaction
- H01M4/0433—Molding
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/04—Processes of manufacture in general
- H01M4/0471—Processes of manufacture in general involving thermal treatment, e.g. firing, sintering, backing particulate active material, thermal decomposition, pyrolysis
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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
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
- H01M4/139—Processes of manufacture
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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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention belongs to the technical field of lithium battery production and manufacturing, and discloses a battery pole group preparation device, a battery pole group preparation method and a battery pole group. This battery utmost point group preparation facilities includes: a first conveying mechanism for conveying the diaphragm; the second conveying mechanism is used for conveying the positive plate; the third conveying mechanism is used for conveying the negative pole pieces; the first heating mechanism is used for heating the membrane positioned on the first conveying mechanism; the second heating mechanism is used for heating the positive plate positioned on the second conveying mechanism; the third heating mechanism is used for heating the negative pole pieces on the third conveying mechanism; and the molding mechanism is used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm to form the battery pole group. The positive plate, the negative plate and the diaphragm of the battery pole group preparation device have certain temperatures before forming, so that the problem of long preheating time after forming is avoided, the production time is saved, and the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of lithium battery production and manufacturing, in particular to a battery pole group preparation device, a battery pole group preparation method and a battery pole group.
Background
At present, because the lithium ion battery has the advantages of high specific energy, more cycle times, long storage time and the like, the lithium ion battery is not only widely applied to portable electronic equipment such as mobile phones, digital cameras, portable computers and the like, but also is expanded to be applied to the fields of electric bicycles, electric automobiles, mobile base stations, energy storage power stations and the like.
For this situation, the use of batteries no longer occurs alone as in cell phones, but more in the form of series-parallel battery packs. In the process of mass production of batteries, the battery pole group is preheated after being formed, the preheating time is too long, the preheating effect is poor, and the battery pole group can frequently have the conditions of staggered layers, softening and other shaping failures. Because a reliable scheme is needed to maintain stable production on an automatic production line, if the shaping of a battery pole group fails, the production of subsequent processes is seriously delayed, and the qualification rate of the whole production line is influenced. In addition, the forming process of the battery pole group and the preheating process after forming are separately carried out, more manpower and financial resources are needed to be invested for maintaining the dispersion of the processes, the production cost is increased invisibly, the production efficiency is reduced, and the accuracy of the production process is difficult to guarantee.
Disclosure of Invention
The invention aims to provide a battery pole group preparation device, a battery pole group preparation method and a battery pole group, which have good preheating effect and improve the production efficiency and the production accuracy.
In order to achieve the purpose, the invention adopts the following technical scheme:
a battery pole set manufacturing apparatus comprising:
a first conveying mechanism for conveying the diaphragm;
the second conveying mechanism is used for conveying the positive plate;
the third conveying mechanism is used for conveying the negative pole pieces;
a first heating mechanism for heating the membrane on the first conveying mechanism;
the second heating mechanism is used for heating the positive plate positioned on the second conveying mechanism;
the third heating mechanism is used for heating the negative pole pieces on the third conveying mechanism;
and the molding mechanism is used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm to form a battery pole group.
Preferably, the first heating mechanism comprises a first blast heating assembly, a first partition curtain and a first infrared heating assembly which are sequentially arranged along the conveying direction of the diaphragm, the first blast heating assembly is used for blast heating the diaphragm, and the first infrared heating assembly is used for infrared heating the diaphragm;
the second heating mechanism comprises a second air-blowing heating assembly, a second partition curtain and a second infrared heating assembly which are sequentially arranged along the conveying direction of the positive plate, the second air-blowing heating assembly is used for air-blowing heating of the positive plate, and the second infrared heating assembly is used for infrared heating of the positive plate;
the third heating mechanism comprises a third air-blowing heating assembly, a third partition curtain and a third infrared heating assembly which are sequentially arranged along the conveying direction of the negative pole piece, the third air-blowing heating assembly is used for carrying out air-blowing heating on the negative pole piece, and the third infrared heating assembly is used for carrying out infrared heating on the negative pole piece.
Preferably, the molding mechanism includes:
the molding assembly is used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm;
and the forming heating assembly is arranged around the battery pole group in a surrounding manner and is used for heating the forming assembly, the positive pole piece, the negative pole piece and the diaphragm.
Preferably, the lamination device further comprises a lamination mechanism arranged between the second conveying mechanism and the forming mechanism, and the lamination mechanism comprises:
a lamination assembly capable of placing the positive electrode sheet and the negative electrode sheet on the separator, respectively;
and the laminated heating assemblies are arranged on two sides of the laminated assembly and are used for heating the positive plate, the negative plate and the diaphragm.
Preferably, the lamination assembly comprises:
a first nip roller and a second nip roller between which the diaphragm is sandwiched;
a lamination platform for carrying the diaphragm, the lamination platform being configured to be selectively disposed on both sides of the first clamping roller such that both sides of the diaphragm can be respectively attached to the lamination platform;
and the lamination mechanical arm can respectively grab the positive plate and the negative plate and respectively place the positive plate and the negative plate on one side of the diaphragm, which is far away from the lamination platform.
In order to achieve the above object, the present invention further provides a battery pole group manufacturing method for controlling the above battery pole group manufacturing apparatus, the battery pole group manufacturing method including the steps of:
the diaphragm is heated by the first heating mechanism while the first conveying mechanism conveys the diaphragm, so that the preheating process of the diaphragm is completed;
while the second conveying mechanism conveys the positive plate, the second heating mechanism is utilized to heat the positive plate so as to complete the preheating process of the positive plate;
while the third conveying mechanism conveys the negative plate, the third heating mechanism is utilized to heat the negative plate so as to complete the preheating process of the negative plate;
after the diaphragm, the positive plate and the negative plate respectively complete respective preheating processes, the positive plate and the negative plate are respectively pressed on two sides of the diaphragm by using a forming mechanism so as to complete the forming process of the battery pole group.
Preferably, in the preheating process of the diaphragm, after the diaphragm is heated by the first air blowing heating assembly, the diaphragm penetrates through the first partition curtain and is subjected to infrared heating and heat preservation by the first infrared heating assembly;
in the preheating process of the positive plate, after the positive plate is heated by the second blast heating assembly, the positive plate penetrates through the second partition curtain and is subjected to infrared heating and heat preservation by the second infrared heating assembly;
in the preheating process of the negative pole piece, after the negative pole piece is heated by the third blowing heating assembly, the negative pole piece penetrates through the third partition curtain and is subjected to infrared heating and heat preservation by the third infrared heating assembly.
Preferably, the battery pole group forming process comprises the following steps:
the forming heating assembly preheats the positive plate, the negative plate, the diaphragm and the forming assembly at the same time, and then the forming assembly respectively compresses the positive plate and the negative plate on two sides of the diaphragm.
Preferably, the method further comprises the following steps between the preheating process and the battery pole group forming process:
the lamination heating assembly heats the positive electrode sheet, the negative electrode sheet and the separator before and/or simultaneously with and/or after the lamination assembly places the positive electrode sheet and the negative electrode sheet on the separator, respectively.
In order to achieve the purpose, the invention also provides a battery pole group which is manufactured by adopting the preparation method of the battery pole group and is applied to a battery pack or an electric vehicle or an energy storage power station or a communication iron tower.
The invention has the beneficial effects that:
according to the battery pole group preparation device provided by the invention, the first conveying mechanism is used for conveying the diaphragm, the second conveying mechanism is used for conveying the positive plate, the third conveying mechanism is used for conveying the negative plate, and the first conveying mechanism, the second conveying mechanism and the third conveying mechanism can synchronously work so as to realize synchronous feeding of the positive plate, the negative plate and the diaphragm, avoid the condition of mutual material equality and save the production time. And forming mechanisms are arranged at the downstream of the second conveying mechanism, the downstream of the third conveying mechanism and the downstream of the front end conveying section of the first conveying mechanism, and the forming mechanisms are used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm to form a battery pole group. Through setting up forming mechanism, the crimping is effectual to guarantee the fixed effect of positive plate and negative pole piece on the diaphragm, make battery utmost point group be overall structure.
First heating mechanism realizes preheating diaphragm, and second heating mechanism realizes preheating positive plate, and third heating mechanism realizes preheating negative plate for preheat before the shaping of battery utmost point group, with the effect of preheating of improvement positive plate, negative plate and diaphragm, the finished product of battery utmost point group is of high quality. Because the positive plate, the negative plate and the diaphragm have certain temperatures before forming, the problem of long preheating time after forming is avoided, the production time is saved, and the production efficiency is improved.
According to the preparation method of the battery pole group, the first conveying mechanism, the second conveying mechanism and the third conveying mechanism are used for conveying the positive pole piece, the negative pole piece and the diaphragm, and the first heating mechanism, the second heating mechanism and the third heating mechanism are used for preheating, so that the conveying process and the preheating process are carried out simultaneously, and the condition that the investment in production cost is large due to process dispersion is avoided. Meanwhile, compared with a mode that the conveying process and the preheating process are sequentially carried out, the production time is saved, and the production efficiency is higher.
The battery pole group provided by the invention is manufactured by using the battery pole group manufacturing device and the battery pole group manufacturing method, and the problems of overlong preheating time and poor preheating effect after the battery pole group is formed are solved.
Drawings
FIG. 1 is a schematic view showing the construction of an apparatus for manufacturing a battery electrode assembly according to the present invention;
FIG. 2 is a schematic view of a second IR insulating region of an apparatus for manufacturing a battery cell pack according to the present invention;
fig. 3 is a schematic view of a battery pack manufacturing apparatus according to the present invention in a first lamination heating zone;
fig. 4 is a schematic view of a battery pack manufacturing apparatus according to the present invention in a second lamination heating zone;
FIG. 5 is a schematic structural view of a molding mechanism of the battery pack manufacturing apparatus according to the present invention;
fig. 6 is a schematic structural view of a battery electrode assembly manufacturing apparatus according to the present invention in a forming infrared heating zone.
In the figure:
100. a first blast heating zone; 101. a first infrared insulation zone; 200. a second blast heating zone; 201. a second infrared insulation zone; 300. a third blast heating zone; 301. a third infrared insulation zone; 400. a first lamination heating zone; 401. a second lamination heating zone; 500. forming an infrared heating area;
1. a first conveying mechanism; 2. a second conveying mechanism; 3. a third conveying mechanism; 4. a lamination mechanism; 5. a molding mechanism;
11. a discharge roller; 12. a support roller; 13. a first partition curtain;
21. a positive electrode conveyor belt; 22. a second partition curtain;
31. a negative electrode conveyor belt; 32. a third partition curtain;
41. a lamination assembly; 411. a first nip roller; 412. a second nip roller; 413. a lamination platform; 414. a positive pole deviation rectifying transfer platform; 415. a negative electrode deviation rectifying transfer platform; 42. a laminated heating assembly;
51. a molding assembly; 511. a molding drive source; 512. an upper pressure plate; 513. a lower pressing plate; 52. and forming the heating assembly.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The battery pole group of the lithium battery comprises a positive plate, a negative plate and a diaphragm, wherein the diaphragm is arranged between the positive plate and the negative plate, and the diaphragm is made of an insulating material and plays a role in isolating the positive plate and the negative plate.
In order to complete the production and manufacture of the battery pole group, the embodiment provides a battery pole group preparation apparatus, as shown in fig. 1, the battery pole group preparation apparatus includes a first conveying mechanism 1, a second conveying mechanism 2, a third conveying mechanism 3 and a forming mechanism 5, front end conveying sections of the second conveying mechanism 2, the third conveying mechanism 3 and the first conveying mechanism 1 are arranged in parallel at intervals, the first conveying mechanism 1 is used for conveying a diaphragm, the second conveying mechanism 2 is used for conveying a positive plate, the third conveying mechanism 3 is used for conveying a negative plate, and the first conveying mechanism 1, the second conveying mechanism 2 and the third conveying mechanism 3 can work synchronously to realize the synchronous feeding of the positive plate, the negative plate and the diaphragm, thereby avoiding the occurrence of the condition of mutual material equality and saving the production time. And forming mechanisms 5 are arranged at the downstream of the second conveying mechanism 2, the third conveying mechanism 3 and the front end conveying section of the first conveying mechanism 1, and the forming mechanisms 5 are used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm to form a battery pole group. Through setting up forming mechanism 5, the crimping is effectual to guarantee the fixed effect of positive plate and negative pole piece on the diaphragm, make battery utmost point group be overall structure.
Because in the process of mass production of the lithium battery, the battery pole group is preheated after being formed, the preheating time is long, the preheating effect is poor, and the condition of layering of the battery pole group is easily caused. In order to solve the problem, the battery pole group preparation device further comprises a first heating mechanism, a second heating mechanism and a third heating mechanism, wherein the first heating mechanism is arranged above the first conveying mechanism, and is used for heating the diaphragm on the first conveying mechanism 1. The second heating mechanism is arranged above the second conveying mechanism 2 and used for heating the positive plates on the second conveying mechanism 2. The third heating mechanism is arranged above the third conveying mechanism 3, and the third heating mechanism is used for heating the negative electrode plates on the third conveying mechanism 3.
The battery pole group preparation facilities that this embodiment provided, first heating mechanism realizes preheating diaphragm, and second heating mechanism realizes preheating positive plate, and third heating mechanism realizes preheating negative plate for preheat before the battery pole group shaping, with the effect of preheating that improves positive plate, negative plate and diaphragm, the finished product of battery pole group is of high quality. Because the positive plate, the negative plate and the diaphragm have certain temperatures before forming, the problem of long preheating time after forming is avoided, the production time is saved, and the production efficiency is improved.
The first conveying mechanism 1 and the first heating mechanism will be described in detail below.
As shown in fig. 1, the separator is a strip-shaped workpiece similar to an adhesive tape, and because the length of the separator is long, the separator is wound on a winding core to facilitate the transportation of the separator, so as to form an adhesive tape roll structure. In order to ensure that the diaphragm can be continuously fed, the first conveying mechanism 1 comprises a first rack, a discharging driving source, a discharging roller 11 and a plurality of supporting rollers 12, the discharging driving source is arranged on the first rack, and the first rack plays a role in mounting the discharging driving source. Rotate on first frame and be provided with blowing roller 11 and a plurality of backing roll 12, first frame has played the effect of whole support, and the blowing driving source specifically is the motor, and the output of blowing driving source is provided with blowing roller 11, and blowing roller 11 wears to establish rolls up the core, and the blowing driving source can drive blowing roller 11 and drive the rotation of rolling up the core, makes the diaphragm launch from rolling up the core. A plurality of supporting rollers 12 are arranged at intervals along the conveying direction of the diaphragm, and the supporting rollers 12 are arranged below the diaphragm and are used for bearing the diaphragm together to ensure the conveying effect of the diaphragm.
Because diaphragm and book core are normal atmospheric temperature transportation, the temperature is lower during the material loading, for this reason, first heating mechanism includes the first blast air heating subassembly that sets gradually along diaphragm direction of delivery, first wall curtain 13 and first infrared heating subassembly, through at first blast air heating subassembly, be provided with first wall curtain 13 between the first infrared heating subassembly, first wall curtain 13 has played the effect of isolated temperature, with divide first blast air heating district 100 and first infrared heat preservation district 101 in the direction of delivery of diaphragm, first wall curtain 13 adopts heat-resisting, low thermal conductivity material to make, thereby guarantee that these two regional temperatures of first blast air heating district 100 and first infrared heat preservation district 101 are independent separately, avoid appearing the condition that the temperature influences each other.
First blast heating district 100 corresponds to first blast heating subassembly, and first infrared heat preservation district 101 corresponds to first infrared heating subassembly, and first blast heating subassembly is used for carrying out the blast heating to the diaphragm, and first infrared heating subassembly is used for carrying out infrared heating to the diaphragm. When the membrane is initially loaded, the membrane enters the first air blowing heating area 100, and the membrane is heated by the first air blowing heating assembly, so that the temperature rising speed of the membrane is high. The diaphragm passes first blast heating district 100, because the diaphragm adopts the mode of individual layer heating, the temperature rise of diaphragm is efficient, and the diaphragm has higher temperature when arriving at first infrared heat preservation district 101, and the diaphragm gets into first infrared heat preservation district 101 afterwards, utilizes first infrared heating assembly to carry out infrared heating to the diaphragm, has played heat retaining effect for the temperature of diaphragm keeps within the constant range.
The second conveying mechanism 2 and the second heating mechanism will be described in detail below, respectively.
As shown in fig. 1-2, since the positive plate is a sheet-shaped workpiece, in order to ensure that the positive plate can be continuously conveyed, the second conveying mechanism 2 includes a positive driving source, a positive driving wheel, a positive driven wheel and a positive conveying belt 21, the positive driving source is specifically a motor, an output end of the positive driving source is connected to the positive driving wheel, the positive conveying belt 21 is tensioned and wound on the positive driving wheel and the positive driven wheel, the positive conveying belt 21 is used for bearing the positive plates arranged at a plurality of intervals, and the positive driving source can drive the positive driving wheel to rotate and drive the positive driven wheel to rotate and the positive conveying belt 21 to move so as to complete the conveyance of the positive plates.
In order to avoid the movement of the positive plate in the conveying process, a first adsorption hole is formed in the positive conveying belt 21 and communicated with a vacuum generator, the vacuum generator extracts air in the first adsorption hole, and the negative pressure generated in the first adsorption hole enables the positive plate to be adsorbed on the positive conveying belt 21, so that the stability of the positive plate in the conveying process is guaranteed, and the situation that the positive plate falls off is avoided.
Because the positive plate is normal atmospheric temperature transportation, the temperature is lower during the material loading, for this reason, second heating mechanism includes the second blast air heating element that sets gradually along positive plate direction of delivery, second cuts off curtain 22 and second infrared heating element, through at second blast air heating element, be provided with second between the second infrared heating element and cut off curtain 22, second cuts off curtain 22 and has played the effect of isolated temperature, make and divide second blast air heating zone 200 and second infrared heat preservation district 201 in the direction of delivery of positive plate, second cuts off curtain 22 and adopts heat-resisting, low thermal conductivity material to make, in order to guarantee that these two regional temperatures of second blast air heating zone 200 and second infrared heat preservation district 201 are independent separately, avoid appearing the condition that the temperature influences each other.
The second air blowing heating area 200 corresponds to a second air blowing heating assembly, the second infrared heat preservation area 201 corresponds to a second infrared heating assembly, the second air blowing heating assembly is used for carrying out air blowing heating on the positive plate, and the second infrared heating assembly is used for carrying out infrared heating on the positive plate. When the positive plate is initially loaded, the positive plate enters the second blowing heating area 200, and the positive plate is heated by the second blowing heating assembly, so that the temperature rising speed of the positive plate is high. The positive plate passes through second blast heating district 200, because the positive plate adopts the mode of individual layer heating, the temperature rise of positive plate is efficient, and the positive plate has higher temperature when arriving the infrared heat preservation district 201 of second, and the positive plate gets into the infrared heat preservation district 201 of second afterwards, utilizes the infrared heating subassembly of second to carry out infrared heating to the positive plate, has played heat retaining effect for the temperature of positive plate keeps within the constant range.
The third conveying mechanism 3 and the third heating mechanism will be described in detail below, respectively.
As shown in fig. 1, because the negative plate is a sheet-shaped workpiece, in order to ensure that the negative plate can be continuously conveyed, the third conveying mechanism 3 includes a negative driving source, a negative driving wheel, a negative driven wheel and a negative conveying belt 31, the negative driving source is specifically a motor, an output end of the negative driving source is connected to the negative driving wheel, the negative conveying belt 31 is tensioned around the negative driving wheel and the negative driven wheel, the negative conveying belt 31 is used for bearing the negative plates arranged at a plurality of intervals, the negative driving source can drive the negative driving wheel to rotate and drive the rotation of the negative driven wheel and the movement of the negative conveying belt 31, so as to complete the conveyance of the negative plates.
In order to avoid the removal of negative pole piece appearing in transportation process, be provided with the second on negative pole conveyer belt 31 and adsorb the hole, the second adsorbs the hole and communicates in vacuum generator, and vacuum generator extracts the downthehole air of second adsorption, makes the downthehole negative pressure that produces of second adsorption adsorb negative pole piece on negative pole conveyer belt 31 to guarantee the stability of negative pole piece in transportation process, avoid appearing the condition that the negative pole piece dropped.
Because the negative pole piece is normal atmospheric temperature transportation, the temperature is lower during the material loading, for this reason, third heating mechanism includes the third blast air heating element that sets gradually along negative pole piece direction of delivery, third cuts off curtain 32 and third infrared heating element, through at third blast air heating element, be provided with third cut off curtain 32 between the third infrared heating element, third cut off curtain 32 has played the effect of isolated temperature, make third blast air heating zone 300 and third infrared heat preservation district 301 of dividing in the direction of delivery of negative pole piece, third cut off curtain 32 adopts heat-resisting, low thermal conductivity material makes, in order to guarantee that these two regional temperatures of third blast air heating zone 300 and third infrared heat preservation district 301 are independent separately, avoid appearing the condition that the temperature influences each other.
The third air blowing heating area 300 corresponds to a third air blowing heating assembly, the third infrared heat preservation area 301 corresponds to a third infrared heating assembly, the third air blowing heating assembly is used for air blowing heating of the negative pole piece, and the third infrared heating assembly is used for infrared heating of the negative pole piece. When the negative pole piece was at initial material loading, the negative pole piece got into third air blast zone of heating 300, utilize third air blast heating subassembly to heat the negative pole piece, make the temperature rising speed of negative pole piece very fast, the negative pole piece passes third air blast zone of heating 300, because the negative pole piece adopts the mode of individual layer heating, the temperature rise of negative pole piece is efficient, the negative pole piece has higher temperature when arriving third infrared heat preservation district 301, the negative pole piece gets into third infrared heat preservation district 301 afterwards, utilize third infrared heating subassembly to carry out infrared heating to the negative pole piece, heat retaining effect has been played, make the temperature of negative pole piece keep within the constant range.
After the positive plate, the negative plate and the diaphragm are preheated, in order to ensure the accuracy of the forming of the battery pole group, as shown in fig. 1, the battery pole group preparation device further comprises a lamination mechanism 4 arranged between the second conveying mechanism 2 and the forming mechanism 5, and the lamination mechanism 4 can place the positive plate and the negative plate on the diaphragm so as to be formed by the forming mechanism 5.
Specifically, as shown in fig. 1 and 3, the lamination mechanism 4 includes a lamination assembly 41 and a lamination heating assembly 42, the lamination assembly 41 is capable of placing the positive electrode sheet and the negative electrode sheet on the separator respectively, specifically, the two side surfaces of the separator are the front surface and the back surface respectively, the positive electrode sheet is placed on the front surface of the separator, and the negative electrode sheet is placed on the back surface of the separator. The lamination heating assemblies 42 are disposed at both sides of the lamination assembly 41 for heating the positive and negative electrode sheets and the separator.
In the placing process, the lamination heating assemblies 42 are arranged on two sides of the lamination assembly 41, and the lamination heating assemblies 42 avoid the lamination assembly 41, so that the heating effect of the lamination heating assemblies 42 is prevented from being influenced by the shielding of the lamination assembly 41. Through setting up lamination heating element 42 for in the lamination process, positive plate, negative pole piece and diaphragm can last the heat preservation heating, have higher temperature before guaranteeing the three shaping.
Since the positive plate and the negative plate need to be respectively placed on two side surfaces of the diaphragm, for this reason, as shown in fig. 3-4, the lamination assembly 41 includes a first clamping roller 411, a second clamping roller 412, a lamination platform 413 and a lamination manipulator, the diaphragm is sandwiched between the first clamping roller 411 and the second clamping roller 412, which plays a role of fixing a front section area of a free end of the diaphragm, the lamination platform 413 is configured to be selectively disposed on two sides of the first clamping roller 411, and the lamination platform 413 is used for bearing the diaphragm, so that two surfaces of the diaphragm can be respectively attached to the lamination platform 413, so as to ensure flatness of the diaphragm. At this time, the diaphragm positioned at one end of the lamination stage 413 is fixed by the first and second nip rollers 411 and 412, and the diaphragm positioned at the other end of the lamination stage 413 is flush with the edge of the lamination stage 413. The lamination manipulator can respectively grab the positive plate and the negative plate and respectively place the positive plate and the negative plate on the side of the diaphragm far away from the lamination platform 413.
According to different procedures for placing the positive electrode plate and the negative electrode plate, as shown in fig. 3, when the positive electrode plate is placed, the lamination platform 413 is placed on one side of the first clamping roller 411, that is, the lamination platform 413 is placed on the right side of the first clamping roller 411, and the position corresponds to a first lamination station, and at this time, the whole lamination mechanism 4 is in the first lamination heating zone 400; as shown in fig. 4, when the negative electrode sheets are placed, the lamination platform 413 is placed on the other side of the first clamping roller 411, that is, the lamination platform 413 is placed on the left side of the first clamping roller 411, and the position corresponds to the second lamination station, and the whole lamination mechanism 4 is located in the second lamination heating zone 401.
Specifically, in the first lamination station, the lamination manipulator can grasp the positive plates and place the positive plates on the side of the diaphragm far away from the lamination platform 413 respectively, that is, the positive plates are placed on the front side of the diaphragm; during the second lamination station, through the transform of lamination platform 413 position for diaphragm up's front and reverse realize the upset, the reverse side of diaphragm up this moment, and the lamination manipulator can snatch the negative pole piece and place it respectively in the diaphragm and keep away from one side of lamination platform 413, and the negative pole piece is placed in the reverse side of diaphragm promptly.
In order to further ensure the accuracy of the positions of the positive plate, the negative plate and the diaphragm, as shown in fig. 3-4, the lamination assembly 41 further includes a positive-electrode deviation-correcting transfer table 414 and a negative-electrode deviation-correcting transfer table 415, the positive-electrode deviation-correcting transfer table 414 and the negative-electrode deviation-correcting transfer table 415 are respectively disposed on two sides of the first clamping roller 411, the positive-electrode deviation-correcting transfer table 414 is located between the second conveying mechanism 2 and the lamination platform 413, the positive-electrode deviation-correcting transfer table 414 is used for bearing the positive plate, and the positive-electrode deviation-correcting transfer table 414 plays a role in transferring and correcting the position of the positive plate, so as to avoid a large deviation of the position of the positive plate. The negative pole rectification transfer table 415 is located between the second conveying mechanism 2 and the lamination platform 413, the negative pole rectification transfer table 415 is used for bearing negative pole pieces, the negative pole rectification transfer table 415 plays a role in transfer, the position of the negative pole pieces is corrected, and large deviation of the position of the negative pole pieces is avoided.
The lamination manipulator can grab the positive plate and place the positive plate on the positive deviation rectifying transfer table 414, after the positive plate is subjected to position adjustment, the lamination manipulator places the positive plate on the lamination platform 413, similarly, the lamination manipulator can grab the negative plate and place the negative plate on the negative deviation rectifying transfer table 415, and after the negative plate is subjected to position adjustment, the lamination manipulator places the positive plate on the lamination platform 413.
In this process, the lamination assembly 41 is respectively located in the first lamination heating zone 400 and the second lamination heating zone 401, and in order to ensure the heating effect in the lamination process, the lamination heating assembly 42 includes lamination infrared lamps, and at least two lamination infrared lamps are respectively arranged above two sides of the lamination platform 413, and the lamination infrared lamps are obliquely arranged, so that the lamination infrared lamps irradiate on the lamination platform 413 along the oblique direction to effectively avoid the lamination manipulator which is vertically arranged, and ensure the heating effect in the lamination process.
After the lamination is completed, in order to make the positive plate, the negative plate and the separator have a stable integral structure, as shown in fig. 1 and 5, the forming mechanism 5 includes a forming assembly 51 and a forming heating assembly 52, the forming assembly 51 is used for respectively pressing the positive plate and the negative plate on two sides of the separator, and the forming assembly 51 corresponds to a forming station. The forming heating assembly 52 corresponds to the forming infrared heating zone 500, and the forming heating assembly 52 is used for heating the forming assembly 51, the positive plate, the negative plate and the diaphragm.
Before the shaping, shaping heating element 52 can heat shaping subassembly 51 for shaping subassembly 51 heats to the shaping and predetermines the temperature, and shaping heating element 52 can heat the shaping station simultaneously, with positive plate, negative pole piece and diaphragm heating and heat retaining process before realizing the shaping, thereby guarantee the shaping effect. Locate around the battery utmost point group through shaping heating element 52 ring for shaping heating element 52 effectively dodges shaping element 51, avoids influencing the heating effect of shaping heating element 52 because of sheltering from of shaping element 51.
Further, as shown in fig. 5, the forming assembly 51 includes a forming driving source 511, an upper pressing plate 512 and a lower pressing plate 513, the lower pressing plate 513 is used for bearing the pole group formed after lamination, the upper pressing plate 512 is disposed above the lower pressing plate 513, the forming driving source 511 is specifically a forming cylinder, etc., an output end of the forming driving source 511 is connected to the upper pressing plate 512, and the forming driving source 511 can drive the upper pressing plate 512 to move toward the lower pressing plate 513, so as to press the pole group between the upper pressing plate 512 and the lower pressing plate 513, so as to complete the formation of the battery pole group, and the fixing effect of the positive pole piece, the negative pole piece and the separator is good.
As shown in fig. 6, the forming heating assembly 52 includes at least four forming infrared lamps, the at least four forming infrared lamps are respectively disposed above, below, on the left and on the right of the forming station, and the forming infrared lamps are directly projected to the forming station, so that the heating and heat preservation effects are good.
The embodiment also provides a battery pole group preparation method, which is used for controlling the battery pole group preparation device, and the battery pole group preparation method comprises the following steps: the membrane is heated by the first heating mechanism while the first conveying mechanism 1 conveys the membrane, so that the membrane preheating process is completed; while the second conveying mechanism 2 conveys the positive plate, the second heating mechanism is utilized to heat the positive plate so as to complete the preheating process of the positive plate; while the third conveying mechanism 3 conveys the positive plate, the third heating mechanism is utilized to heat the negative plate so as to complete the preheating process of the negative plate; after the diaphragm, the positive plate and the negative plate respectively complete respective preheating processes, the positive plate and the negative plate are respectively pressed on two sides of the diaphragm by using the forming mechanism 5 so as to complete the forming process of the battery pole group.
In the method for preparing a battery electrode group provided by this embodiment, the first conveying mechanism 1, the second conveying mechanism 2, and the third conveying mechanism 3 convey the positive electrode sheet, the negative electrode sheet, and the separator, and at the same time, the first heating mechanism, the second heating mechanism, and the third heating mechanism are used for preheating, so that the conveying process and the preheating process are performed at the same time, and the situation of large investment in production cost due to process dispersion is avoided. Meanwhile, compared with a mode that the conveying process and the preheating process are sequentially carried out, the production time is saved, and the production efficiency is higher.
Specifically, in the diaphragm preheats the in-process, after the diaphragm heats through first blast air heating element earlier, the diaphragm passes first wall curtain 13 and carries out infrared heating and heat preservation through first infrared heating element, and first blast air heating element can make monolithic structure's diaphragm sharply rise in temperature, and the temperature rise is efficient, and first infrared heating element can keep warm to the diaphragm that has higher temperature.
In the preheating process of the positive plate, after the positive plate is heated by the second blowing heating assembly, the positive plate passes through the second partition curtain 22 and is subjected to infrared heating and heat preservation by the second infrared heating assembly. The second blast heating subassembly can make the positive plate of monolithic structure rise temperature sharply, and the temperature rise is efficient, and the infrared heating subassembly of second can keep warm to the positive plate that has higher temperature.
In the preheating process of the negative pole piece, after the negative pole piece is heated by the third blowing heating assembly, the negative pole piece passes through the third partition curtain 32 and is subjected to infrared heating and heat preservation by the third infrared heating assembly. The third blast heating assembly can enable the negative plate of the monolithic structure to be rapidly heated, the temperature rise efficiency is high, and the third infrared heating assembly can be used for preserving heat of the negative plate with higher temperature.
The method also comprises the following steps between the preheating process and the battery pole group forming process: the lamination heating assembly 42 heats the positive electrode sheet, the negative electrode sheet, and the separator before and/or simultaneously with and/or after the lamination assembly 41 places the positive electrode sheet and the negative electrode sheet on the separator, respectively. The present embodiment preferably continues to heat the lamination heater assembly 42 before, during, and after lamination of the lamination assembly 41 to maintain a temperature at each stage of the lamination process.
The lamination heating assembly 42 is heated before lamination of the lamination assembly 41 and used for keeping the temperature in the conveying process, the lamination heating assembly 42 is heated when the lamination assembly 41 is laminated and used for ensuring the temperature in the lamination process, the lamination heating assembly 42 is heated after lamination of the lamination assembly 41, so that the pole group which completes lamination still has higher temperature before reaching a forming station, heating and heat preservation facilities are arranged at all positions before forming, and the preheating effect of each positive pole piece, each negative pole piece and each diaphragm is improved by preheating before forming.
The forming process of the battery pole group comprises the following steps: the forming heating assembly 52 preheats the positive plate, the negative plate, the diaphragm and the forming assembly 51 at the same time, and then the forming assembly 51 respectively compresses the positive plate and the negative plate on two sides of the diaphragm. The temperature of the positive plate, the temperature of the negative plate and the temperature of the diaphragm are kept constant by preheating before and during the forming process, the forming effect is good, and the condition that the forming failure affects the qualification rate of finished products is avoided. In addition, the whole battery pole group after molding is not preheated, the production efficiency is improved, and the shaping success rate is improved.
The embodiment also provides a battery pole group, which is manufactured by using the battery pole group manufacturing device and the battery pole group manufacturing method, and is applied to a battery pack, an electric vehicle, an energy storage power station, a communication iron tower or other electric devices, so that the problems of overlong preheating time and poor preheating effect after the battery pole group is formed are solved.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are based on the orientations and positional relationships shown in the drawings and are used for convenience in description and simplicity in operation, but do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be constructed in a particular operation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (8)
1. A battery pole pack manufacturing apparatus, comprising:
a first conveying mechanism (1) for conveying the membrane;
a second conveying mechanism (2) for conveying the positive electrode plate;
a third conveying mechanism (3) for conveying the negative electrode sheet;
a first heating mechanism for heating the membrane on the first conveying mechanism (1);
the second heating mechanism is used for heating the positive plate positioned on the second conveying mechanism (2);
the third heating mechanism is used for heating the negative pole pieces on the third conveying mechanism (3);
the molding mechanism (5) is used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm to form a battery pole group;
still including set up in second conveying mechanism (2) with lamination mechanism (4) between forming mechanism (5), lamination mechanism (4) includes:
a lamination assembly (41), the lamination assembly (41) being capable of placing the positive electrode sheet and the negative electrode sheet on the separator, respectively;
laminated heating assemblies (42) arranged on two sides of the laminated assembly (41) and used for heating the positive plate, the negative plate and the diaphragm;
the lamination assembly (41) comprises:
a first pinch roller (411) and a second pinch roller (412), the diaphragm being interposed between the first pinch roller (411) and the second pinch roller (412);
a lamination platform (413) for carrying the diaphragm, the lamination platform (413) being configured to be selectively disposed on both sides of the first clamping roller (411) such that both sides of the diaphragm can be respectively adhered to the lamination platform (413);
the lamination mechanical arm can respectively grab the positive plate and the negative plate and respectively place the positive plate and the negative plate on one side, far away from the lamination platform (413), of the diaphragm.
2. The battery pole group manufacturing device according to claim 1, wherein the first heating mechanism comprises a first air-blowing heating assembly, a first partition curtain (13) and a first infrared heating assembly which are arranged in sequence along the conveying direction of the diaphragm, wherein the first air-blowing heating assembly is used for air-blowing heating the diaphragm, and the first infrared heating assembly is used for infrared heating the diaphragm;
the second heating mechanism comprises a second air blowing heating assembly, a second partition curtain (22) and a second infrared heating assembly which are sequentially arranged along the conveying direction of the positive plate, the second air blowing heating assembly is used for blowing air to heat the positive plate, and the second infrared heating assembly is used for infrared heating of the positive plate;
the third heating mechanism comprises a third air-blowing heating assembly, a third partition curtain (32) and a third infrared heating assembly which are sequentially arranged along the conveying direction of the negative pole piece, the third air-blowing heating assembly is used for carrying out air-blowing heating on the negative pole piece, and the third infrared heating assembly is used for carrying out infrared heating on the negative pole piece.
3. The battery pole group manufacturing apparatus according to claim 1, wherein the molding mechanism (5) includes:
the molding assembly (51) is used for respectively pressing the positive plate and the negative plate on two sides of the diaphragm;
and the forming heating assembly (52) is arranged around the battery pole group in a surrounding mode and is used for heating the forming assembly (51), the positive pole piece, the negative pole piece and the diaphragm.
4. A battery electrode assembly manufacturing method for controlling the battery electrode assembly manufacturing apparatus according to any one of claims 1 to 3, the battery electrode assembly manufacturing method comprising the steps of:
the membrane preheating method comprises the following steps that while a first conveying mechanism (1) conveys a membrane, the membrane is heated by a first heating mechanism, so that the membrane preheating process is completed;
while the second conveying mechanism (2) conveys the positive plate, the second heating mechanism is utilized to heat the positive plate so as to complete the positive plate preheating process;
while the third conveying mechanism (3) conveys the negative plate, the third heating mechanism is utilized to heat the negative plate so as to complete the preheating process of the negative plate;
after the diaphragm, the positive plate and the negative plate respectively complete respective preheating processes, the positive plate and the negative plate are respectively pressed on two sides of the diaphragm by using a forming mechanism (5) so as to complete the forming process of the battery pole group.
5. The battery pole group manufacturing method according to claim 4, wherein in the separator preheating process, after the separator is heated by the first air blowing heating assembly, the separator passes through the first partition curtain (13) and is subjected to infrared heating and heat preservation by the first infrared heating assembly;
in the preheating process of the positive plate, after the positive plate is heated by the second blast heating assembly, the positive plate passes through the second partition curtain (22) and is subjected to infrared heating and heat preservation by the second infrared heating assembly;
in the preheating process of the negative pole piece, after the negative pole piece is heated by the third blowing heating assembly, the negative pole piece penetrates through the third partition curtain (32) and is subjected to infrared heating and heat preservation by the third infrared heating assembly.
6. The method for preparing the battery pole group according to claim 4, wherein the battery pole group forming process comprises the following steps:
the forming heating assembly (52) preheats the positive plate, the negative plate, the diaphragm and the forming assembly (51) at the same time, and then the forming assembly (51) respectively compresses the positive plate and the negative plate on two sides of the diaphragm.
7. The method for preparing a battery pole group according to claim 4, further comprising the following steps between the preheating process and the battery pole group forming process:
a lamination heating assembly (42) heats the positive electrode sheet, the negative electrode sheet, and the separator before and/or simultaneously with and/or after the positive electrode sheet and the negative electrode sheet are placed on the separator by a lamination assembly (41), respectively.
8. A battery pole group, which is manufactured by the method for manufacturing the battery pole group according to any one of claims 4 to 7 and is applied to a battery pack, an electric automobile, an energy storage power station or a communication tower.
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| CN115483454A (en) * | 2022-10-21 | 2022-12-16 | 合肥国轩高科动力能源有限公司 | A lithium battery stacking device |
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| CN105789678B (en) * | 2016-04-22 | 2018-04-27 | 广东亿鑫丰智能装备股份有限公司 | Cell winding lamination machine is with going up piece device |
| JP7422138B2 (en) * | 2019-03-29 | 2024-01-25 | パナソニックホールディングス株式会社 | feeding device |
| CN110364766B (en) * | 2019-07-16 | 2022-06-21 | 蜂巢能源科技有限公司 | Die cutting lamination system and method |
| CN110380128B (en) * | 2019-07-16 | 2020-06-30 | 蜂巢能源科技有限公司 | Die-cut lamination system and method |
| CN210123778U (en) * | 2019-08-29 | 2020-03-03 | 蜂巢能源科技有限公司 | Pole group preheating components |
| CN211045636U (en) * | 2019-09-26 | 2020-07-17 | 广州汽车集团股份有限公司 | Lithium cell electricity core lamination machine |
| CN212113907U (en) * | 2020-04-26 | 2020-12-08 | 天津市捷威动力工业有限公司 | A lamination device for improving the folds of lithium-ion battery separators |
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Address after: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: SVOLT Energy Technology Co.,Ltd. Country or region after: China Address before: No.8899 Xincheng Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee before: SVOLT Energy Technology Co.,Ltd. Country or region before: China |