CN109351793B - Battery pole piece manufacturing system - Google Patents
Battery pole piece manufacturing system Download PDFInfo
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- CN109351793B CN109351793B CN201811465414.6A CN201811465414A CN109351793B CN 109351793 B CN109351793 B CN 109351793B CN 201811465414 A CN201811465414 A CN 201811465414A CN 109351793 B CN109351793 B CN 109351793B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
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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
- H01M4/0402—Methods of deposition of the material
- H01M4/0404—Methods of deposition of the material by coating on electrode collectors
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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
- H01M4/0402—Methods of deposition of the material
- H01M4/0411—Methods of deposition of the material by extrusion
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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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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery pole piece manufacturing system, and belongs to the field of battery manufacturing. Aiming at the problems of inconsistent product size and low production efficiency in the prior art and difficult realization of a new process, the invention provides a battery pole piece manufacturing system, which comprises the following components: the full-automatic continuous production of the product is realized through full-automatic control. Compared with the existing manufacturing process, the method has the advantages that the coverage of equipment on parameters such as thickness of the produced product is increased, the steps of preheating and independent rolling of a current collector are reduced, the influence of more external factors on the production efficiency is reduced, the consistency of the product is improved, and finally the aim of improving the production efficiency is achieved. The battery has more perfect functions, wider application range and reduced overall procedures, and the device can be matched with the production process requirements of novel batteries.
Description
Technical Field
The invention relates to the field of battery manufacturing, in particular to a battery pole piece manufacturing system.
Background
To date, resource-type fossil fuels remain the primary source of power for humans. Carbon emissions from its use in large quantities are currently the main cause of the global warming effect. As one of the important solutions, the development and utilization of renewable energy sources such as solar energy and wind energy for power generation has become urgent. However, these natural energy sources, including solar energy, wind energy, tidal energy, etc., are intermittent, and the amount of electrical energy produced is severely dependent on natural factors such as weather, seasons, time and place. These unstable electrical energy, if directly incorporated into the grid, can severely interfere with the proper operation of the grid. The adoption of the large-scale energy storage system can effectively solve the problem, and intermittent energy generated by means of renewable natural resources can be stored and released by the energy storage system to be connected into a power grid, so that a user side can obtain stable, safe and efficient clean energy.
Currently, the main energy storage technologies include electrochemical energy storage, mechanical energy storage, chemical energy storage, electrical energy storage, phase change energy storage and the like. Compared with other energy storage modes, the electrochemical energy storage technology has the characteristics of high efficiency, less investment, safe use, flexible application and the like, and is most suitable for the development direction of the current energy sources. Among the various electrochemical storage methods, the secondary battery is most convenient to use and maintain. However, the current mature secondary battery systems are hardly suitable for large-scale energy storage applications. The traditional lead-acid and cadmium-nickel battery contains a large amount of harmful heavy metal elements, and the large-scale application can cause serious environmental pollution in the production and waste stages, has strict requirements on the environmental temperature, is only suitable for indoor operation environments, and has short service life and low cost performance; the nickel-hydrogen battery adopts expensive rare metal, is difficult to meet the cost requirement of large-scale electricity storage in terms of resources and prices, and has poor high-temperature performance and low working voltage. Besides noble metal, the all-vanadium redox flow battery also has an expensive ion exchange membrane, and positive and negative electrolyte has the problems of toxicity, corrosiveness, low energy conversion efficiency and the like; sodium-sulfur batteries are extremely high in operating temperature and high in price, and liquid sulfur and metal sodium are also highly corrosive to aluminum oxide diaphragms, so that combustion accidents are easy to cause. The water-based ion battery adopts neutral saline water solution as electrolyte, so that the problem of flammability of organic electrolyte is avoided, the defects of high pollution, short service life (such as a lead-acid battery) and high price (a nickel-hydrogen battery) of the traditional water-based battery are overcome, the water-based ion battery has the characteristics of safety, low cost, long service life, environment friendliness, recoverability and the like, and is a brand-new novel battery and an ideal system for large-scale energy storage technology.
As a brand new battery, the invention research and development of the water-based ion battery also has certain challenges, such as low gram capacity of the battery compared with the existing other types of batteries, and in order to ensure the subsequent large-scale application, the improvement of the single cell capacity is particularly important, and the common solution is to increase the usage amount of the active substance, but under the condition that the original usage area is unchanged, the thickness of the pole piece is increased due to the increase of the active substance, so that the subsequent production of the pole piece is extremely challenged. In order to meet the capacity requirement, the thickness of the negative electrode plate of the practical aqueous battery can reach 1.5mm (containing special current collector and active substances), but the thickness of the electrode plate of the conventional battery is generally smaller than 0.3mm, in the conventional mature electrode manufacturing process, the coating of the lithium battery or the slurry pulling process of the nickel-hydrogen battery can only meet the manufacturing process requirement of the thinner electrode plate, and the thicker electrode plate of the novel aqueous battery cannot be realized in the basic manufacturing process, so that the production process equipment needs to be redesigned and manufactured at the source.
The conventional battery pole piece manufacturing has a plurality of process procedures such as mixing, coating, rolling, drying and the like, each process procedure can cause certain uncontrollable influence on the performance of an actual product, most of the process procedures are independent and mutually independent in operation, are interfered by different factors such as the proficiency of equipment and actual operators, hardly ensure the consistency of the final product in size and performance, and finally form a result with low production efficiency.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems of inconsistent product size, low production efficiency and difficult realization of a new process in the prior art, the invention provides a battery pole piece manufacturing system. The novel battery terminal has the advantages that the functions are more perfect, the application range is wider, the overall working procedures are reduced, the novel battery terminal can be matched with the production process requirements of the novel battery, the problem of poor consistency of the traditional battery terminal products can be solved, and the production efficiency is finally improved.
2. Technical proposal
The aim of the invention is achieved by the following technical scheme.
An extrusion device is designed, and is arranged behind a kneading device on integral process equipment, and comprises a fixed cavity for providing extrusion shaping processing space; the fixed cavity is provided with a plurality of groups of small rollers with adjustable gaps and a hydraulic adjustable force-out device;
the extrusion unit is arranged at one end of the fixed cavity and used for extruding and shaping the raw materials in the fixed cavity;
and the feeding unit is used for feeding the extrusion unit, and the outlet is communicated with the fixed cavity.
Furthermore, a shearing unit is arranged in the feeding unit and used for shearing raw materials, and an outlet is communicated with the fixed cavity; the shearing unit is used for carrying out miniaturization treatment on the kneaded large-block rib net structure;
still further, still include the vibrations unit, vibrate the feed unit. The vibration unit is used for assisting the raw materials to quickly enter the cavity.
Still further still include, fix the cavity support, set up in fixed cavity below, support fixed cavity, this support is used for supporting the material cavity, and can carry on the exclusive angular adjustment according to the different of actual material kind, parameter such as the viscosity, in order to the even effective final export of material;
furthermore, an outlet sealing cover is arranged at the outlet of the fixed cavity, the size of the final outlet sealing cover can be adjusted according to the actual material type and the product requirement or is quickly replaced by adopting an integral casting piece, a gradual change guide groove is arranged at the inner side of the final outlet sealing plate, the gradual change angle is selectively adjusted according to the material type and the different final product requirement, and for the rear end adjustable gap small roller, the gap between rollers can be adjusted according to the thickness, the viscosity and the specific capacity of the actual material, and the roller number is properly increased;
still further, a discharge port is arranged at the outlet end of the fixed cavity or on the outlet sealing cover, the inner wall of the end face of the fixed cavity where the discharge port is positioned or the inner wall of the outlet sealing cover is a discharge port inclined plane, and the discharge port inclined plane is inclined from two ends to the discharge port.
Still further, still be provided with the roller device in advance behind the fixed cavity export, roller device in advance comprises the compression roller of at least a pair of, and the raw materials of extruding passes the clearance between the compression roller.
Furthermore, the extrusion unit is hydraulic extrusion equipment, and the size of the fixed cavity and the setting of hydraulic pressure are correspondingly changed according to the actual requirement of materials, so that the final purpose of the device is to compact and shape the front-section reinforcement mesh structure, and ensure that the final product is in a belt-shaped form with three-dimensional size and weight meeting the technological requirement.
A battery pole piece manufacturing system comprises a battery pole piece manufacturing device,
feeding device: the device is positioned at the forefront end of the equipment, can automatically feed materials, and can rapidly and accurately weigh and place various raw materials;
mixing device: the high-speed mixing device is arranged behind the feeding device, and is used for stirring and crushing the proportioning powder at a high speed to confirm that the components are uniform;
kneading device: the device is arranged behind a mixing device, and the powder with uniform front-section components is stirred at variable speed to form a rib net structure with three-dimensional shape, uniform components and different sizes, certain elasticity, extensibility, viscosity and plasticity;
the extrusion device is arranged behind the kneading device and is used for compacting and shaping the front-section rib net structure to form a required shape;
the conveying device is arranged behind the extrusion device and is used for conveying the extruded material to the coating device;
coating device: after the extrusion device, the equipment unwinds from the current collector, guides and controls, compacts and coats integrally, dries, winds and the like, is used for uniformly coating the front-section strip-shaped rib net structure raw materials on the current collector, simultaneously compacts and dries and forms finally;
and the winding device is arranged behind the coating device and is used for winding the formed battery pole piece.
Further, the coating device comprises an uncoiling device for uncoiling the current collector and is arranged at the front section of the coating device;
the coating device is arranged behind the uncoiling device and is used for coating extruded materials with corresponding forms on the current collector;
and the drying device is arranged behind the coating device and is used for drying the battery pole piece formed by the coating device.
Furthermore, the drying device is a group or a plurality of combinations, and is in a closed or semi-closed mode, a pure wind heat mode, an infrared heating mode or a drying mode combining pure wind heat and infrared heating.
Still further, still include roll-in device: and the rolling device is arranged in front of the winding device and is used for carrying out final compaction and surface shaping on the battery pole piece after coating and drying.
Further, the kneading apparatus is a single-axis operation or a multi-axis operation.
Further, the kneading device also comprises a turnover device, and the raw materials are transferred to the next station for further operation.
Further, the unwinding device includes an unwinding guide for guiding the current collector.
Further, the device of all processes of the manufacturing system is one or more, and the device combination is arranged in a transverse, longitudinal or transverse and longitudinal combined mode.
Further, the devices of all the procedures are linked through the transmission equipment, and the devices of all the procedures are fixed or non-fixed.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) This scheme has designed integrative equipment to the manufacturing of battery pole piece, through with feeding, compounding, kneading, extrusion, coating procedure integration an organic whole, unified setting parameter, the monitoring state reduces the influence that leads to the fact to the final product because of the independent settlement of process, thereby the process integration has improved production efficiency.
(2) The traditional process of single process of a conventional single unit is replaced by integral complete control of mixing, kneading, extrusion shaping and coating, and independent operation of original single processes is replaced by integral automatic continuity of process units, so that influences on final product performance and other aspects caused by differences of respective parameter settings of the single processes and different proficiency of actual different operators can be reduced, and production efficiency is improved.
(3) The strip-shaped three-dimensional and weight-adjustable rib net structure which is uniform in components, has certain elasticity, extensibility, viscosity and plasticity and is obtained through kneading and extrusion and subsequent multi-step shaping, when the rib net structure is coated in the subsequent process, the viscosity and extensibility of raw materials can be controlled by a self-contained heating module on a coating and rolling integrated station according to actual production requirements, so that the deformation resistance of materials is reduced, and the consistency of pole pieces is controlled. .
(4) The thicker pole piece is dried through the infrared and hot air dual heating mode, so that the phenomenon that active substances fall off in the subsequent assembly process due to the fact that the moisture content of the pole piece is large is avoided, and the surface morphology of the pole piece is greatly influenced due to rapid temperature rise in an adjustable mode.
(5) The device integrates a plurality of working procedures into a whole, thereby reducing the influence of a plurality of independent working procedures on product parameters, ensuring the setting consistency of each small working procedure under the monitoring of uniform parameters and further improving the consistency and the production efficiency of products.
Drawings
FIG. 1 is a schematic view of an integrated battery pole piece manufacturing apparatus of the present invention;
FIG. 2 is an enlarged schematic view of one configuration of the extrusion unit;
FIG. 3 is a schematic view of the structure of the extrusion unit of the embodiment 3 disposed in the fixed cavity;
FIG. 4 is an enlarged schematic cross-sectional view of the extrusion unit at location A;
FIG. 5 is an enlarged schematic view of the extrusion unit A in front;
fig. 6 is a schematic side view of a pre-roll apparatus.
The reference numerals in the figures illustrate:
1. a charging device; 2. a mixing device; 3. a kneading device; 4. an extrusion device; 5. a conveying device; 6. an uncoiling device; 7. uncoiling guide device; 8. a coating device; 9. a drying device; 10. a rolling device; 11. a winding device; 13. a feeding unit; 14. a vibration unit; 15. an extrusion unit; 16. a fixed cavity; 161. a discharge port; 162. a discharge port inclined plane; 163. a pre-roll device; 17. fixing the cavity bracket; 19. and an outlet cover.
Detailed Description
The invention will now be described in detail with reference to the drawings and the accompanying specific examples.
In order to meet the unique design and process requirements of the novel battery counter electrode, the device is different from the traditional battery manufacturing process unit architecture, the function setting of each unit is different from the prior art, and compared with the prior art, the device has certain difference, and the extrusion unit is designed for the water-based ion battery.
In the implementation, each process unit can be subjected to unit quantity proportioning according to the production scale, the unit own capacity and the specific product requirement, and the actual process unit is 1 or more. The actual unit combination should be arranged transversely, longitudinally or in a transverse and longitudinal combination mode according to the actual field and production requirements, and the units can be linked through rail bases or other transmission equipment during the period, and the unit spacing can be fixed or not.
The present solution contemplates a series of integrated systems distributed with each other, including.
Feeding device 1: the method can simultaneously meter a plurality of different kinds of raw materials and fill the raw materials according to set requirements, thereby reducing the manual error and environmental influence during powder weighing and ensuring the proportioning accuracy;
mixing device 2: the device is provided with a frequency conversion and timing device, and can be precisely set according to actual requirements to ensure that the result meets the requirements;
kneading device 3: the stirring shaft with stepless speed regulation and different running directions can be used for carrying out single-shaft or multi-shaft operation, special setting can be carried out according to the actual raw material proportioning requirement by assisting cavity temperature control, and a turnover device is arranged after the working procedure is finished and can be used for carrying out transmission by depending on the self weight of materials;
as shown in fig. 2, the extrusion apparatus 4: comprises a fixed cavity 16 for providing extrusion shaping processing space; the extrusion unit 15 is arranged at one end of the fixed cavity 16, and is used for extruding and shaping the raw materials in the fixed cavity 16 and is hydraulic extrusion equipment; the feeding unit 13 is used for feeding the extrusion unit 15, the outlet is communicated with the fixed cavity 16, a shearing unit is further arranged in the feeding unit 13 and used for shearing raw materials, and the outlet is communicated with the fixed cavity 16; a vibration unit 14 for vibrating the feed unit 13. The fixed cavity 16 may be made of stainless steel, and an outlet cover 19 is disposed at the outlet of the fixed cavity 16.
The device is also provided with a fixed cavity bracket 17 which is arranged below the fixed cavity 16 and used for supporting the fixed cavity 16, the tail end of the device is shaped through a small rolling device, parameter setting can be carried out through the device, so that the shape of a fixed final product is adjusted, the actual density ratio and shape control of the tail end product are ensured, and the extrusion mode, the port size, the feeding mode, the multistage shaping or the increasing rolling can be adjusted according to the final requirement of the product in actual implementation.
A conveying device 5 provided after the extruding device 4 and conveying the extruded material to the coating device;
coating device: the middle coating unit 8 comprises a rolling, coating and heating device 6, wherein the rolling, coating and heating functions are integrated into a whole, the heating mode is set according to the requirements, the ductility of the rib net structure can be adjusted by heating, the control of consistency of thickness and gram density of the finished product in the subsequent rolling and coating process steps is facilitated, and the gap between rollers, the pressure between rollers and the temperature on the rollers are specially set according to the requirements of the final finished product and the difference of the rib net structure of the extrusion unit, so that the requirements of various combinations can be met;
the middle section drying device 9 is used for drying the parts which are set or have different functions with the existing general equipment under the condition of meeting the production efficiency and not influencing the product performance because the thickness of the water-based pole piece suitable for the device is far greater than that of the pole piece of the existing other battery system, and the water-based pole piece is not limited to hot air, infrared or other combinations, so that the product performance is not influenced, and the production requirement can be met to a certain extent.
And the winding device 11 is arranged behind the coating device and is used for winding the formed battery pole piece.
Through above-mentioned system, the function of whole production battery pole piece is more perfect, and application range is wider, and whole process reduces, and the production technology requirement of novel battery can be matchd to this equipment, also can solve the problem that traditional battery terminal product uniformity is poor from this, finally improves production efficiency.
Example 1
Fig. 1 shows one embodiment of the integrated battery pole piece manufacturing device of the present invention, in which the integrated battery pole piece manufacturing device of the present invention may be disposed on an integral support, or may be disposed correspondingly according to requirements.
The automatic feeding device 1 is arranged at one end of the equipment support, such as the upper left part, and can also be arranged at other parts, and is responsible for metering and weighing basic raw materials and putting the basic raw materials into the mixing device 2, wherein the mixing device 2 is arranged below the feeding device 1, and is responsible for uniformly mixing the proportioned raw materials according to the setting; the kneading device 3 is arranged below the mixing device 2 and is responsible for secondary mixing of raw materials with uniform components according to requirements, the raw materials are changed into semi-solid materials with certain viscosity and fluidity, the extrusion device 4 is arranged below the kneading device 3 and is responsible for compacting the semi-solid raw materials in a closed cavity to a certain extent and shaping the semi-solid raw materials through a pre-roll of the extrusion port so as to meet the requirements of form and size, the uncoiling device 6 is arranged above the middle of the coating device and is responsible for uncoiling a current collector roll, the coating device is arranged below the guiding device 7 and is responsible for coating raw materials transmitted by the input device 5 on the current collector, the coating device in the embodiment of the scheme can be provided with heating and rolling functions, the gap between the upper and lower rolls can be adjusted according to the thickness requirements of the product, the fluidity of the raw materials can be adjusted according to different types and process requirements of the raw materials, and the rolling speed can be adjusted according to the final density requirements of the product;
the drying device 9 is located at the left lower part of the coating device and is responsible for drying the raw materials after coating, the rolling device 10 is located at the left side of the drying device 9 and is responsible for carrying out final compaction and surface treatment on the dried pole piece, the rolling device 11 is located at the leftmost end of the device and is responsible for collecting the formed pole piece roll. The whole device is comprehensively controlled by a set of control system, and in the embodiment, the raw material finished by the extrusion device 4 can be directly subjected to coating operation without an open mill process. The technology is saved, the efficiency is improved, and the cost is correspondingly reduced.
In this embodiment, the kneading device 3 may perform uniaxial operation or multiaxial operation, and may transfer the raw material after the process is completed to the next station for re-operation through other shafts or turning functions through dead weight free falling or a transmission device, and the cavity may perform temperature setting according to the material components and other requirements for achieving the kneading effect, and the rotation operation and control manner may also be regarded as various references; in this embodiment, the drying device 9 may be a set or a combination of multiple parts, and the closed or semi-closed mode and the drying mode of pure wind heat or infrared heating may be confirmed according to the material types and the process. The devices can be freely proportioned in number, and are not limited to 1:1 shown in the prior art in FIG. 1; each device can confirm whether to be in a fixed mode or to be adjusted by adding a sliding rail according to different processes,
the device of the present solution mainly consists of several major parts. The manufacturing flow of the battery pole piece integrated equipment of the invention comprises the following steps: the full-automatic continuous production of the product is realized through full-automatic control. Compared with the existing manufacturing process, the method has the advantages that the coverage of equipment on parameters such as thickness of the produced product is increased, the steps of preheating and independent rolling of a current collector are reduced, the influence of more external factors on the production efficiency is reduced, the consistency of the product is improved, and finally the aim of improving the production efficiency is achieved.
Example 2
The process is basically the same as that of example 1, except that the product material can be directly collected by 11 winders after passing through 9 dryer, and no additional rolling process is required. The surface of the battery pole piece after being coated and dried is not required to be shaped without arranging the rolling device 10. The molding work is directly carried out, the working procedure is omitted, and the efficiency is improved.
Example 3
Embodiment 3 is similar to embodiment 1 in that, as shown in fig. 3, 4 and 5, the fixing cavity 16 may be disposed obliquely to form an oblique angle with the horizontal plane, so as to facilitate extrusion of the raw material; the feeding unit 13 also forms certain angle with fixed cavity 16, wherein the unloading of feeding unit 13 gets into in the fixed cavity 16, the tip of fixed cavity 16 carries out the ejection of compact, the tip can be directly be provided with the discharge gate 161 of rectangular shape, also can be provided with export closing cap 19, be provided with the discharge gate 161 of rectangular shape on the export closing cap 19, the thickness of discharge gate 161 sets up according to the demand, use export closing cap 19 can replace the discharge gate 161 of different thickness just by replacement export closing cap 19, the inner wall of the terminal surface of fixed cavity 16 at discharge gate 161 place or export closing cap 19 inner wall be discharge gate inclined plane 162, discharge gate inclined plane 162 can not cause the blanking by both ends to the discharge gate slope when guaranteeing to extrude, also can produce pressure through the inclined plane, guarantee that the discharge density is reasonable.
Example 4
Example 4 is similar to example 1 in that, as shown in fig. 3 and 6, a pre-roll device 163 is further disposed behind the outlet of the fixed cavity 16, the pre-roll device 163 is composed of at least one pair of press rolls, and the extruded raw material passes through the gap of the press rolls to be pre-pressed and shaped, so that the uniformity of the freshly extruded product is ensured. The subsequent working procedures are convenient to work, uniformity is guaranteed, and the yield is improved.
The foregoing has been described schematically the invention and embodiments thereof, which are not limiting, but are capable of other specific forms of implementing the invention without departing from its spirit or essential characteristics. The drawings are also intended to depict only one embodiment of the invention, and therefore the actual construction is not intended to limit the claims, any reference number in the claims not being intended to limit the claims. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively designed without departing from the gist of the present invention, and all the structural manners and the embodiment are considered to be within the protection scope of the present patent. In addition, the word "comprising" does not exclude other elements or steps, and the word "a" or "an" preceding an element does not exclude the inclusion of a plurality of such elements. The various elements recited in the product claims may also be embodied in software or hardware. The terms first, second, etc. are used to denote a name, but not any particular order.
Claims (9)
1. A battery pole piece manufacturing system is characterized by comprising,
the feeding device (1) is arranged at one end of the equipment support and used for weighing, placing and feeding raw materials;
the mixing device (2) is arranged below the feeding device (1) and is used for stirring and crushing the proportioned materials;
the kneading device (3) is arranged below the mixing device (2) and is used for stirring the materials mixed in the front section to form a rib net structure;
an extrusion device (4) arranged below the kneading device (3), wherein the extrusion device (4) comprises,
a fixed cavity (16) providing an extrusion shaping processing space;
the extrusion unit (15) is hydraulic extrusion equipment and is arranged at one end of the fixed cavity (16) and used for extruding and shaping raw materials in the fixed cavity (16);
a feeding unit (13) for feeding the extrusion unit (15), and an outlet is communicated with the fixed cavity (16); a shearing unit is also arranged in the feeding unit (13) for shearing raw materials; a pre-roller device (163) is arranged behind the outlet of the fixed cavity (16), the pre-roller device (163) consists of at least one pair of compression rollers, and extruded raw materials pass through a gap between the compression rollers; a vibration unit (14) that vibrates the feed unit (13); the fixed cavity bracket (17) is arranged below the fixed cavity (16) and is used for supporting the fixed cavity (16); the outlet sealing cover (19) is arranged at the outlet of the fixed cavity (16); a discharge port (161) is arranged at the outlet end of the fixed cavity (16) or on the outlet sealing cover (19), the inner wall of the end face of the fixed cavity (16) or the inner wall of the outlet sealing cover (19) where the discharge port (161) is positioned is a discharge port inclined surface (162), and the discharge port inclined surface (162) is inclined from two ends to the discharge port;
compacting and shaping the front section of the rib net structure to form a required shape;
a conveying device (5) which is arranged behind the extrusion device (4) and is used for conveying the extruded material to the coating device;
the coating device is used for uncoiling the current collector, carrying out guide transmission and control on the current collector, coating extruded materials with corresponding forms on the current collector, compacting and drying;
and the winding device (11) is arranged behind the coating device and is used for winding the formed battery pole piece.
2. A battery pole piece manufacturing system as recited in claim 1, wherein the coating device comprises,
the uncoiling device (6) uncoils the current collector and is arranged at the front section of the coating device (8);
a coating device (8) which is arranged behind the uncoiling device (6) and is used for coating extruded materials with corresponding forms on the current collector;
and the drying device (9) is arranged behind the coating device (8) and is used for drying the battery pole piece formed by the coating device (8).
3. A battery pole piece manufacturing system according to claim 2, characterized in that the drying device (9) is a set or a plurality of combinations, and is in a closed or semi-closed mode, a pure wind heating mode, an infrared heating mode or a drying mode combining pure wind heating and infrared heating mode.
4. A battery pole piece manufacturing system according to claim 1, further comprising a rolling device (10) arranged before the winding device (11) for final compaction and surface shaping of the coated and dried battery pole piece.
5. A battery pole piece manufacturing system according to claim 2, characterized in that the unwinding device (6) comprises an unwinding guide (7) for guiding the current collector.
6. A battery pole piece manufacturing system according to claim 1, characterized in that the kneading device (3) is a single-axis operation or a multi-axis operation.
7. A battery pole piece manufacturing system according to claim 1, characterized in that the kneading device (3) further comprises a turning device for transferring the raw material to the next station for a further operation.
8. A battery pole piece manufacturing system according to any of claims 1-7, wherein the devices of all the working procedures of the manufacturing system are one or more, and the combination of the devices is arranged in a transverse, longitudinal or a transverse-longitudinal combination manner.
9. A battery pole piece manufacturing system according to any of claims 1-7, characterized in that all process units are linked by means of a transmission device, all process units being fixed or non-fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465414.6A CN109351793B (en) | 2018-12-03 | 2018-12-03 | Battery pole piece manufacturing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811465414.6A CN109351793B (en) | 2018-12-03 | 2018-12-03 | Battery pole piece manufacturing system |
Publications (2)
| Publication Number | Publication Date |
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| CN109351793A CN109351793A (en) | 2019-02-19 |
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| WO2022056983A1 (en) * | 2020-09-15 | 2022-03-24 | 惠州亿纬锂能股份有限公司 | Extrusion head for molding pole piece and molding device comprising same, and molding method and preparation method therefor |
| CN112072063A (en) * | 2020-09-15 | 2020-12-11 | 惠州亿纬锂能股份有限公司 | Extrusion head for pole piece molding, molding device comprising extrusion head, molding method and preparation method of extrusion head |
| CN112768631B (en) * | 2021-01-07 | 2024-05-10 | 上海兰钧新能源科技有限公司 | Battery pole piece and embossing and rolling process thereof |
| CN113102188A (en) * | 2021-04-26 | 2021-07-13 | 般若涅利（北京）装备技术有限公司 | Slurry double-side coating device |
| CN119340320A (en) * | 2023-07-21 | 2025-01-21 | 宁德时代新能源科技股份有限公司 | Pole piece manufacturing device and pole piece manufacturing method |
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