A double-drum composite plating equipment for lithium battery current collector electrode

Abstract

The application discloses a kind of lithium battery current collector electrode double drum composite coating equipment, it is sequentially provided with discharge mechanism, first coating module, second coating module, material collecting mechanism and the roller group unit of setting coating material roll walking path from feed to discharge;The first coating module and the second coating module horizontal position arrangement and discharge mechanism and material collecting mechanism are respectively placed in the upper and lower sides between two coating modules;The first coating module and the second coating module respectively complete the coating of the two sides of coating material roll;It also includes swing arm mechanism, rectification mechanism, tension roller, flattening mechanism, preheating degassing unit, pretreatment ion source, post-treatment ion source, vacuum pump unit and multiple cantilever support.The coating equipment double side is coated simultaneously, improves coating efficiency.And through the arrangement position of reasonable layout coating module and material collecting mechanism and discharge mechanism, realize the total height of equipment is low, floor space is small, cost is low, maintenance is more simple and convenient.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lithium ion battery and the field of coating equipment, in particular to a lithium battery current collector electrode double-drum composite coating equipment. BACKGROUND

[0002] The current commonly used positive and negative current collectors of lithium batteries are mainly copper foil, electrolytic copper foil, aluminum foil and sputtering coating. The existing technology and problems are as follows: 1. The copper foil and aluminum foil are rolled and pickled repeatedly, which requires high equipment, and the commonly used thickness is 10-16 microns, but it is difficult to continue to thin, and the product quality cannot be further improved; 2. The electrolytic copper solution can produce 6-8 micron copper foil, but the preparation of the electrolyte is complicated, and the characteristics of electrolysis can cause the surface roughness of the copper foil to be too large, so a series of surface treatments such as edge surface treatment, heat-resistant layer treatment and oxidation prevention treatment are required. The smooth edge needs to increase the surface treatment to improve the surface adhesion rate; the overall process of electroplating is too complex, and the equipment cost, time cost and pollution control cost caused by the process are too high; 3. The sputtering coating is to bombard copper and aluminum metal with high-energy ions to form gaseous particles, which are deposited on the molecular layer of the film surface to form chemical bonds. The controllable coating thickness can reach nanometer level, the coating time is short, and the adhesion rate is high, but the production of metal film contains too much gas, the overall cost is too high, and the energy consumption is too large. 4. The evaporation coating uses a certain heating evaporation method to evaporate copper and aluminum metals and gasify them, and the particles are deposited on the film surface to condense into a metal film. The surface metal film contains less gas and consumes less energy, which is suitable for large-scale thickening, but the adhesion strength of the evaporation coating substrate is low, which cannot meet the industry use requirements.

[0003] Therefore, it is of great significance and application prospect to develop a more optimal lithium battery current collector electrode lithium battery current collector electrode double-drum composite coating equipment to overcome the deficiencies in the existing process technology, improve the coating efficiency, reduce the overall height of the equipment and the cost of the equipment, etc. SUMMARY

[0004] In view of the above problems, the present application provides a lithium battery current collector electrode double-drum composite coating equipment, which is provided with two coating modules to complete the coating of both sides of the coating material roll, realizes the double-sided coating of the coating material roll during the movement of the coating material roll in the feeding mechanism and the receiving mechanism, and improves the coating efficiency. By reasonably arranging the coating module and the receiving mechanism and the feeding mechanism, the height of the equipment, the floor area and the cost of the equipment are effectively reduced, the height requirement of the equipment for the factory building is reduced, and the maintenance of the equipment is more simple and convenient.

[0005] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0006] The application provides a lithium battery current collector electrode double-drum composite plating film equipment, which is sequentially provided with a discharging mechanism, a first plating film module, a second plating film module, a material collecting mechanism and a roller group unit for setting a plating film material roll walking path from a plating film material roll feeding position to a discharging position.

[0007] Further, the first plating film module and the second plating film module each comprise a plating film roller and a plating film unit arranged around the plating film roller; the plating film unit is a plurality of combined plating film arrangements of sputtering plating film units and evaporation plating film units.

[0008] Further, the plurality of combined plating film arrangements are one of sputtering plating film unit-evaporation plating film unit-sputtering plating film unit, sputtering plating film unit-evaporation plating film unit, sputtering plating film unit-sputtering plating film unit, sputtering plating film unit-sputtering plating film unit-evaporation plating film unit plating film arrangement.

[0009] Further, the roller group unit comprises a plurality of guide rollers distributed on the material roll walking path and a cantilever end face plate at the cantilever end.

[0010] Further, the double-drum composite plating film equipment further comprises a swing arm mechanism, a deviation rectifying mechanism, a tension roller, a preheating and degassing unit, a flattening mechanism, a pretreatment ion source, a post-treatment ion source, a vacuum pump unit and a plurality of cantilever supports connected with the equipment main body.

[0011] The application also provides an application of the lithium battery current collector electrode double-drum composite plating film equipment, which is applied to the preparation of lithium battery current collector electrode copper film, aluminum film and other thin films.

[0012] The application has the following beneficial effects:

[0013] The lithium battery current collector electrode double-drum composite plating equipment is provided with two plating modules to complete plating on two surfaces of the plating material roll respectively, realizes double-surface plating of the plating material roll during movement of the plating material roll on the feeding mechanism and the collecting mechanism, and effectively improves plating efficiency; through reasonable layout, the plating modules, the collecting mechanism and the feeding mechanism are arranged at positions, i.e., the first plating module and the second plating module are arranged horizontally, and the feeding mechanism and the collecting mechanism are arranged on the upper side and the lower side between the two plating modules respectively; the arrangement mode effectively reduces the overall height of the equipment, reduces the height requirement of the equipment on the factory building, and makes equipment maintenance simpler and more convenient, while the compact arrangement reduces the volume, reduces the cost and the floor area of the equipment; in addition, through arrangement of the swing arm mechanism, the tension roller, the flattening mechanism and the deviation correction mechanism, the guiding roller is better matched, and it is further ensured that the plating material roll does not occur relaxation, deformation, twisting and other phenomena during the whole walking process, and plating failure is reduced and plating uniformity is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] The application will be further described below with reference to the drawings:

[0015] Figure 1 The lithium battery current collector electrode double-drum composite plating equipment structure schematic diagram provided for an embodiment of the application.

[0016] Label explanation: plating material roll 00, feeding mechanism A01, swing arm mechanism A02, flattening roller A02-1, deviation correction mechanism A03, tension roller A04, preheating and degassing unit A05, guiding roller A06, flattening mechanism A07, pretreatment ion source A08, first sputtering plating unit A09, evaporation plating unit A11, second sputtering plating unit A012, post-treatment ion source A13, collecting mechanism A14, cantilever support A15, vacuum pump unit A16, cantilever end face plate A17. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application clearer, the application will be further described below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0018] The lithium battery current collector electrode double-drum composite plating equipment is provided with a feeding mechanism, a first plating module, a second plating module, a collecting mechanism and a roller group unit arranged in sequence from a plating material roll feeding position to a discharging position; the first plating module and the second plating module are arranged horizontally, and the feeding mechanism and the collecting mechanism are arranged on the upper side and the lower side between the two plating modules respectively; the first plating module completes plating on one surface of the plating material roll, and the second plating module completes plating on one surface of the plating material roll.

[0019] The first coating module and the second coating module each comprise a coating roller and a coating unit arranged around the coating roller; the coating unit is a plurality of combined coating arrangements of sputtering coating units and evaporation coating units.

[0020] The roller group unit comprises a plurality of guide rollers distributed on the material roll walking path and a cantilever end panel at the cantilever end.

[0021] The double-drum composite coating equipment further comprises a swing arm mechanism, a deviation rectifying mechanism, a tension roller, a preheating and degassing unit, a flattening mechanism, a pretreatment ion source, a post-treatment ion source and a vacuum pump unit.

[0022] The swing arm mechanism and the deviation rectifying mechanism are sequentially arranged after the material feeding mechanism and before the material collecting mechanism, so as to ensure that the coating material roll does not occur phenomena such as loosening, deformation and twisting during the material feeding and collecting processes; the swing arm mechanism is provided with a flattening roller.

[0023] The tension roller and the flattening mechanism are arranged between the guide rollers as required, so as to further ensure the flatness of the coating material roll when walking along the guide roller path.

[0024] The preheating and degassing unit and the pretreatment ion source are sequentially arranged before the first coating module and the second coating module, so as to perform degassing and pretreatment on the coating material roll before coating.

[0025] The post-treatment ion source is arranged after the first coating module and the second coating module, so as to perform post-treatment on the coating material roll after coating.

[0026] The double-drum composite coating equipment is further provided with a plurality of cantilever supports, which are used for connecting with the equipment body.

[0027] The application also provides an application of the double-drum composite coating equipment for lithium battery current collector electrodes, which is applied to the preparation of thin films such as lithium battery current collector electrode copper films and aluminum films.

[0028] Example 1

[0029] As Figure 1The lithium battery current collector electrode double-drum composite plating film equipment is provided with, from a plating film roll 00 feeding position to a discharging position, a discharging mechanism A01, a first plating film module, a second plating film module, a material collecting mechanism A14 and a roller group unit for setting a plating film roll 00 walking path; the first plating film module and the second plating film module are arranged horizontally, and the discharging mechanism A01 and the material collecting mechanism A14 are arranged on the upper and lower sides between the two plating film modules respectively; the first plating film module completes plating film on one side of the plating film roll, and the second plating film module completes plating film on the other side of the plating film roll.

[0030] The first plating film module and the second plating film module each comprise a plating film roller A10 and a plating film unit arranged around the plating film roller A10; the plating film unit is arranged in combination of a first sputtering plating film unit A09, an evaporation plating film unit A11 and a second sputtering plating film unit A12.

[0031] The roller group unit comprises a plurality of guide rollers A06 distributed on the plating film roll walking path and a cantilever end face plate A17 at the cantilever end.

[0032] The double-drum composite plating film equipment further comprises a cantilever mechanism A02, a deviation rectifying mechanism A03, a tension roller A04, a preheating and degassing unit A05, a flattening mechanism A07, a pretreatment ion source A08, a post-treatment ion source A13 and a vacuum pump unit A16.

[0033] The cantilever mechanism A02 and the deviation rectifying mechanism A03 are arranged in sequence after the discharging mechanism A01 and before the material collecting mechanism A14, so as to ensure that the plating film roll 00 does not have phenomena such as loosening, deformation and twisting during discharging and collecting; the cantilever mechanism A02 is provided with a flattening roller A02-1.

[0034] The tension roller A04 and the flattening mechanism A07 are arranged between the guide rollers A06 as required, so as to further ensure the flatness of the plating film roll when walking along the guide roller path.

[0035] The preheating and degassing unit A05 and the pretreatment ion source A07 are arranged in sequence before the first plating film module and the second plating film module, so as to perform degassing and pretreatment on the plating film roll 00 before plating.

[0036] The post-treatment ion source A13 is arranged after the first plating film module and the second plating film module, so as to perform post-treatment on the plating film roll 00 after plating.

[0037] The double-drum composite plating film equipment is further provided with a plurality of cantilever supports A15, which are used for connecting with the equipment main body.

[0038] The specific film coating process of the lithium battery current collector electrode double-drum composite film coating equipment is as follows: the film coating material roll 00 is fixed on the unwinding mechanism A01; the unwinding mechanism A01 is connected with the swing arm mechanism A02, and the swing arm mechanism A02 is provided with a flattening roller A02-1, which plays a role in flattening the film coating material roll while being tensioned; after the film coating material roll 00 is transmitted from the unwinding mechanism A01, it first passes through the swing arm mechanism A02 to keep it in an ideal state during the running process; then it sequentially passes through the deviation correction mechanism A03, the guide roller A06, the tension roller A04, the preheating and degassing unit A05 to perform corresponding surface treatment; next, it sequentially passes through the flattening mechanism A07, the pretreatment ion source A08, the sputtering film coating unit A09, the evaporation film coating unit A11, the sputtering film coating unit A012 and the post-treatment ion source A13 to complete the film coating of one side of the film coating material roll 00; then, the film coating material roll 00 sequentially passes through the guide roller A06, the flattening mechanism A07, the tension roller A04 and the like according to the preset path to enter the second film coating module, and sequentially passes through the preheating and degassing unit A05, the pretreatment ion source A08, the sputtering film coating unit A09, the evaporation film coating unit A11, the sputtering film coating unit A12 and the post-treatment ion source A13 in the same way to complete the film coating of the other side of the film coating material roll 00, at this time, the double-sided film coating is completed. Finally, the film coating material roll which has completed the double-sided film coating is ensured to enter the material collecting mechanism A14 under the preset tension through the guide roller A06, the tension roller A04, the deviation correction mechanism A03 and the swing arm mechanism A02 to complete the material collecting. A plurality of vacuum pump units A16 are provided in the corresponding space to ensure the vacuum process requirement of film coating; at the same time, a plurality of cantilever supports A15 are provided at the bearing end of the equipment to realize the butt joint with the main body of the equipment; the cantilever end panel A17 provided at the cantilever end of the roller group unit not only ensures the strength of the roller group, but also improves the installation precision and operability of the whole machine.

[0039] In summary, the lithium battery current collector electrode double-drum composite film coating equipment provided by the present application completes the film coating of both sides of the film coating material roll through two film coating modules, realizes the double-sided film coating of the film coating material roll during the movement of the film coating material roll in the unwinding mechanism and the material collecting mechanism, effectively improves the film coating efficiency, and reasonably arranges the positions of the film coating modules, the material collecting mechanism and the unwinding mechanism, i.e., the first film coating module and the second film coating module are arranged horizontally, and the unwinding mechanism and the material collecting mechanism are arranged on the upper side and the lower side between the two film coating modules, respectively. This arrangement effectively reduces the overall height of the equipment, reduces the height requirement of the factory building, and makes the equipment maintenance more simple and convenient. At the same time, the arrangement is compact, reduces the volume, reduces the cost and the floor area of the equipment. Furthermore, the swing arm mechanism, the tension roller, the flattening mechanism and the deviation correction mechanism are provided to better cooperate with the guide roller, further ensure that the film coating material roll does not occur relaxation, deformation, twisting and the like during the whole running process, reduce the film coating failure and improve the uniformity of the film coating.

Claims

1. A dual-drum composite coating device for lithium battery current collector electrodes, wherein the dual-drum composite coating device is sequentially provided with a discharge mechanism, a first coating module, a second coating module, a receiving mechanism, and a roller group unit for setting the travel path of the coating material roll from the coating material roll feeding position to the discharging position; the first coating module and the second coating module are arranged in a horizontal position, and the discharge mechanism and the receiving mechanism are respectively placed on the upper and lower sides between the two coating modules; the first coating module completes the coating of one side of the coating material roll, and the second coating module completes the coating of one side of the coating material roll; the first coating module and the second coating module both include It contains a coating roller and a coating unit arranged around it; the coating unit is a multiple combination coating arrangement of a sputtering coating unit and an evaporation coating unit; the evaporation coating unit is vertically arranged directly below the equipment; the roller group unit includes a plurality of guide rollers distributed on the material roll walking path and a cantilever end panel at the cantilever end; the dual-drum composite coating equipment also includes a swing arm mechanism, a deviation correction mechanism, a tension roller, a flattening mechanism, a preheating and degassing unit, a pretreatment ion source, a post-treatment ion source, and a vacuum pump unit; the swing arm mechanism and the deviation correction mechanism are sequentially arranged after the material discharge mechanism and before the material receiving mechanism; a flattening roller is also provided in the swing arm mechanism.

2. The double-drum composite coating equipment according to claim 1, characterized in that: The multiple combined coating arrangements are one of the coating arrangements of sputtering coating unit-evaporation coating unit-sputtering coating unit, sputtering coating unit-evaporation coating unit, sputtering coating unit-sputtering coating unit, and sputtering coating unit-sputtering coating unit-evaporation coating unit.

3. The double-drum composite coating equipment according to claim 1, characterized in that: The tension roller and the flattening mechanism are arranged between the guide rollers as required to further ensure the flatness of the coating material roll when it travels along the guide roller path.

4. The double-drum composite coating equipment according to claim 1, characterized in that: The preheating and degassing unit and the pretreatment ion source are sequentially arranged before the first coating module and the second coating module to perform degassing and pretreatment on the coating material roll before coating.

5. The double-drum composite coating equipment according to claim 1, characterized in that: The post-processing ion source is arranged after the first coating module and the second coating module to perform post-processing on the coating material roll after coating.

6. The double-drum composite coating equipment according to claim 1, characterized in that: The dual-drum composite coating equipment is also provided with a plurality of cantilever supports, and the cantilever supports are connected to the equipment body.

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