EP4226435A1 - Beschichtungsvorrichtung mit stabiler folienführung - Google Patents
Beschichtungsvorrichtung mit stabiler folienführungInfo
- Publication number
- EP4226435A1 EP4226435A1 EP22714143.9A EP22714143A EP4226435A1 EP 4226435 A1 EP4226435 A1 EP 4226435A1 EP 22714143 A EP22714143 A EP 22714143A EP 4226435 A1 EP4226435 A1 EP 4226435A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- transport
- coating
- bearing
- bearings
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 79
- 239000011248 coating agent Substances 0.000 title claims abstract description 72
- 230000008859 change Effects 0.000 claims abstract description 4
- 239000002245 particle Substances 0.000 claims description 36
- 238000003860 storage Methods 0.000 claims description 28
- 239000007788 liquid Substances 0.000 claims description 5
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001416 lithium ion Inorganic materials 0.000 claims description 4
- 238000009826 distribution Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 238000001035 drying Methods 0.000 description 20
- 239000011888 foil Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910002804 graphite Inorganic materials 0.000 description 7
- 239000010439 graphite Substances 0.000 description 7
- 238000000227 grinding Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 230000037303 wrinkles Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000011889 copper foil Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000007786 electrostatic charging Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C19/00—Apparatus specially adapted for applying particulate materials to surfaces
- B05C19/008—Accessories or implements for use in connection with applying particulate materials to surfaces; not provided elsewhere in B05C19/00
-
- 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
- H01M4/1393—Processes of manufacture of electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/10—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed before the application
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C9/00—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important
- B05C9/08—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation
- B05C9/12—Apparatus or plant for applying liquid or other fluent material to surfaces by means not covered by any preceding group, or in which the means of applying the liquid or other fluent material is not important for applying liquid or other fluent material and performing an auxiliary operation the auxiliary operation being performed after the application
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M2004/026—Electrodes composed of, or comprising, active material characterised by the polarity
- H01M2004/027—Negative electrodes
-
- 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
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
- H01M4/587—Carbonaceous material, e.g. graphite-intercalation compounds or CFx for inserting or intercalating light metals
-
- 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
- H01M4/64—Carriers or collectors
- H01M4/66—Selection of materials
- H01M4/661—Metal or alloys, e.g. alloy coatings
-
- 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
Definitions
- the invention relates to a coating device for coating a carrier on at least one side with a paste according to the preamble of claim 1.
- WO 2018/047054 A1 for example, a manufacturing process for such a coating of a carrier film with a paste is known from the prior art and is explained using the example of manufacturing a negative electrode for lithium-ion batteries.
- the carrier is in the form of a film web, which is transported through the corresponding production/coating system via rollers.
- the paste also contains graphite particles that can be aligned in the magnetic field.
- the transport has to be very precise, because the carrier has to be guided through the magnetic field in a precisely defined manner in order to obtain a precisely controllable alignment of the graphite particles.
- JP 2020053278 A refers to the problem that when drying fans are used to dry coatings, the support can sag as a result of the air flow. To compensate for this, a magnetic material is added to the electrode material, more specifically the coating on the carrier, and a permanent magnet is placed near the carrier to compensate for the deflection.
- the object of the invention is to provide a coating device that enables more precise manufacture with more precise positioning of the carrier.
- the coating device according to the invention provides a
- Transport device before, with which the carrier film to be coated is passed through the system.
- the carrier film per se is not an integral part of the coating device according to the invention.
- the carrier in turn includes a film as the basic material and the coating applied to the film.
- the manufacture of negative electrodes for lithium-ion batteries uses copper foil that comes in long strips.
- a coating for example, a paste made of soft to liquid material is applied as a coating and then dried. During drying, the paste volume can shrink due to evaporation of components of the paste. Because of the adhesion to the film, the carrier as a whole may warp, buckle, wrinkle, or wrinkle.
- the heating used to dry the paste can cause the carrier to expand or shrink.
- the copper foil used will expand when heated, while a paste applied to it will shrink.
- the entire complex of the carrier, which includes the foil and the paste, curves in this case, similar to a current-carrying, heating bimetallic strip.
- the paste with which the carrier film is coated can contain platelet-shaped particles in which, for a majority of the particles, an ellipsoid approximating the respective particle shape has two axes of similar length and one significantly shorter axis.
- the paste with which the carrier film is coated for example, can contain spherical particles in which, for a majority of the particles, an ellipsoid approximate to the respective particle shape has three axes of similar length.
- the paste with which the carrier film is coated for example, can contain needle-shaped particles in which, for a majority of the particles, an ellipsoid that approximates the respective particle shape has a long axis and two significantly shorter axes.
- the uniform orientation of the particles can in principle influence the tension due to volume reduction during drying, but the orientation is dependent on the desired production result specified and cannot be based solely on potential tension.
- the coating can also have a material with thermoresponsive properties, but even these properties usually only contribute to the avoidance of tension to a limited extent.
- Particles in the paste can be oriented, for example, under the influence of a force field.
- Graphite particles can be oriented, for example, in a magnetic field, in particular a temporal and/or spatial alternating magnetic field. If there are particles in the paste that are to be oriented, this process is advantageously carried out before and/or during drying, since the particles are in a completely dried and surrounding environment can hardly move the solidified mass of the paste mechanically.
- the orientation of the particles can partly be carried out simultaneously with the drying process, so that the orientation of the particles is not lost again during drying, either in whole or in part, for example due to air flow or under the influence of the shrinkage of the paste volume.
- the mounting device according to the invention can also be used, which allows mounting in several directions, optionally without contact.
- a dry coating with a powder can also be carried out.
- the particles can also be aligned in a force field depending on the application in the dry coating.
- the invention can also be used with this material.
- the coating device according to the invention provides a reliable and stable support, even if the carrier has a delicate coating and precise positioning is desired.
- the coating device according to the invention is characterized in that the
- Transport device comprises a storage device for position-stable storage of the carrier with respect to a direction perpendicular to the transport plane, in which the carrier lies during transport, with which a force perpendicular to the transport surface can be exercised. Basically it can
- the storage device thus represents a mechanical constraint for the range of movement perpendicular to the transport plane or to the surface of the carrier.
- stable storage in the transport plane is not only advantageous in order to be able to apply the paste precisely during coating, but also to expose the carrier to a force field in a defined manner.
- it is advantageous to position the carrier in a precisely defined manner in the force field for example to align it precisely in relation to the device generating the force field and to position it at a precisely defined distance in relation to the device generating the force field.
- permanent magnets are typically used to generate a magnetic field, which is why it is particularly important that the carrier is positioned at a predetermined, well-defined distance from the permanent magnets so that the particles to be oriented are exposed to the intended field strength, which is necessary for aligning the particles .
- Such stable storage can be obtained by the coating device according to the invention.
- the distance between the carrier and the magnets must be precisely defined over the entire area on which the magnetic field acts on the carrier.
- the coating device according to the invention can also do without a convex film guide, which is conventionally used in the prior art but is significantly more complex to implement.
- the distance between the foil and the magnet is preferably between 0 mm and 200 mm, preferably between 0 mm and 20 mm, particularly preferably 1 mm and 4 mm.
- the carrier can rest on one or more roller bearings.
- the roller bearings provide a mechanical constraint to keep the beam from sagging in the direction of gravity. They have the advantage that they can rotate with the translational movement of the carrier, so only small frictional forces act, which consequently could not influence the carrier (e.g. due to abrasion, electrostatic charging or the like).
- sliding bearings are also possible, which do not turn when they come into contact with the carrier, but remain non-rotatable.
- flat sliding bearings are unusable because they have a large contact area that is in contact with the carrier and thus lead to high frictional forces.
- thin wires or plastic threads stretched across or at an angle to the transport direction can be used. The carrier rests on the wire or thread and slides over it. Due to the extremely small contact area, only low frictional forces occur between the carrier and the thread or wire.
- Such storage can usually be implemented in a cost-effective, space-saving manner with a low overall height and without major technical effort. There are different possibilities of the arrangement or the
- a liquid cushion can also be provided to reduce friction, so that the wearer slides over this cushion.
- a gas bearing or air bearing for example, a gas flow, advantageously an air flow, is generated at a surface. The wearer can then slide on this gas cushion. The frictional forces are regularly negligible. Nevertheless, a gas bearing should be dimensioned in such a way that even when it is attached to the coating side, it does not impede the drying process. It is particularly advantageous to design a gas bearing in such a way that it can be fitted flat over the magnet and has a small thickness, advantageously between 1 mm and 4 mm. In this configuration, the magnetic field penetrates the gas bearing and acts on the carrier. This allows the foil to be precisely positioned parallel to the magnets.
- a vacuum bearing which provides negative pressure, for example, by a vacuum pump or a fan can be used.
- the vacuum bearing sucks in the wearer and thus exerts a force on him.
- This arrangement can also be used to press the carrier against another bearing.
- electromagnetic bearings such as eddy current bearings or electrostatic bearings are conceivable, which allow similarly low frictional forces as gas bearings.
- the material it is necessary for the material to be stored to have the appropriate properties, for example to enable electrostatic charging or the generation of eddy currents.
- non-contact bearings such as gas bearings or electromagnetic bearings can be used in particular. These can effectively prevent the carrier from bending or arching too much perpendicularly to the plane of transport, but without touching or damaging the soft or partially liquid coating.
- gas bearings according to the development of the invention make it possible for access to the film, e.g. during the drying process, not to be impeded.
- rollers over which the carrier tape is guided can then be arranged in the transport direction between the respective magnets in the conventional manner, so that the field lines are not disturbed by the rollers.
- roles require a comparatively large amount of space. Due to the one-sided storage, the film can lift off the rolls. Lifting of the slides when aligning increases the distance to the magnets, ie the particles may not be properly aligned.
- gas bearings such as air bearings
- a non-contact air bearing can be used, so that no matter what bearing is used on the opposite side (e.g. a contacting roller or grinding bearing, or even a non-contact gas bearing), a two-sided bearing that is on the opposite attacking sides.
- the distance between adjacent bearings can in principle be between 1 cm and 8 m, preferably 1 cm - 50 cm, depending on which bearings are still used.
- a vacuum bearing can be provided for exerting a contact pressure.
- This vacuum bearing can be arranged on the same side of the carrier as the other bearings, since it sucks in the film, ie acts in the opposite direction to the direction of force of the other bearings.
- the vacuum bearing can preferably be configured with a vacuum pump.
- the coating device serves to complete the coating, so that the coating device according to the invention also comprises an alignment device in order to be able to orientate the particles in the paste.
- the alignment device creates the force field under the influence of which the particles are aligned.
- magnetic fields which change over time or locally can be used.
- essentially permanent magnets are arranged in stacks and aligned in such a way that the orientation of their magnetic fields varies spatially, so that the carrier moved through the fields experiences a magnetic field that changes over time in relation to a point fixed to the carrier.
- stable positioning of the carrier which is made possible by a coating device according to the invention, is advantageous precisely when passing through the magnetic fields.
- the storage device advantageously stores the carrier in a stable position perpendicular to the transport plane.
- the storage device is thus designed for at least two-sided or multi-sided storage of the carrier.
- the storage elements can be arranged, for example, opposite one another above and below the transport plane or the carrier.
- the bearings can also enclose the carrier in a U-shape in the edge area and thus form a three-sided bearing.
- Two or more bearings can be connected in series along the transport route in order to obtain a particularly stable bearing over the corresponding area.
- the bearings can be arranged opposite each other at the individual points along the transport route or at different points directly in series. In this way, despite the length of the film web, sagging is prevented or reduced.
- At least two gas bearings are connected in series, with a vacuum bearing for exerting a contact pressure perpendicular to the transport direction being provided on the same side on which the gas bearings are located. In this way, the stability can be particularly increased.
- the carrier can become tense when the paste dries, which usually leads to a disruptive curvature perpendicular to the transport plane.
- a disruptive curvature perpendicular to the transport plane.
- it can be advantageous to use, for example, a grinding bearing that restores the shape of the carrier or the film.
- a bearing force on the coated side can also be brought about by a convex foil guide.
- the foil then passes a greater distance than on a straight path;
- the guiding of the foil with a constant change of direction on the arcuate section causes the carrier foil to be subjected to a certain amount of pressure.
- precisely when an alignment is also to take place on this transport route section at the same time it is necessary to produce a convex force field or magnet surface there, which is technically difficult.
- the convex leadership can also only be done within a certain framework, since the
- Coating device geometrically usually only allows a certain angle range.
- a convex foil guide can also be used in combination with at least one air bearing.
- all bearings can be arranged on one side so that, for example, the coated side is accessible for a drying process.
- Fig. 1 carriers with different coatings
- Fig. 2 a schematic representation of a roller bearing in a coating device
- Fig. 3 a schematic representation of a grinding bearing in a coating device according to the invention
- Fig. 4 a schematic representation of an air bearing in a coating device according to the invention
- Fig. 5 a schematic representation of a combination of
- Fig. 6 a schematic representation of a double-sided air bearing according to the invention
- Fig. 9 a schematic representation of a coating device according to the invention, as well as
- Figure 10 is an illustration of an air bearing for use with the invention.
- Figures 2-4 each show single direction bearings.
- Coating device like, the invention can be processed or transported.
- the carrier la consists basically only of the film F, without any coating.
- the supports 1b, 1c each have a coating B or two coatings B1, B2.
- the coatings B1, B2 can also be different from one another.
- a paste or a dry coating can be used as the coating B, B1, B2.
- the other carriers 1 in the following figures can be correspondingly coated or uncoated.
- Figure 2 shows a section of a transport section over which a film F or a carrier 1 in the transport direction T transported to be coated.
- the carrier 1 runs over roller bearings 2.
- magnets 3 (not shown here) are provided, in whose magnetic field the particles can align themselves. In order not to disturb the field lines, the magnets 3 are arranged between the roller bearings 2.
- the carrier 1 sags slightly between two adjacent roller bearings 2, so that the distance between the carrier 1 and the magnet 3 decreases compared to a fully tensioned film.
- the roller bearings 2 have a low level of friction, but they only act on the carrier 1 on one side.
- the foil side facing the magnet 3 is therefore the coated side, the opposite side, which is not touched by the bearing, is coated.
- the disadvantage of this arrangement is that the distance between the carrier 1 and the magnet 3, which is crucial for a defined particle orientation, depends very much on individual circumstances such as the current tensile stress on the carrier 1 and can vary from individual case to individual case, causing fluctuations in production quality is subject.
- the bottom 4 is drawn in to indicate the direction of gravity.
- the sagging of the carrier 1 can be reduced by supporting it in more places closer together.
- the prerequisite for this, however, is that the bearings 12 are smaller so that the magnets 3 do not have such a strong influence on the magnetic field.
- Such an embodiment can be used as a spacer 12 via grinding bearings.
- Figure 3 can be achieved. Individual wires or plastic threads, which are braced transversely to the transport direction T and over which the carrier 1 can slide, are sufficient for the sliding bearing 12 .
- the spacers 12 can then also be located between the carrier 1 and the magnet 3 . Even if here If a certain sagging of the carrier 1 can still be observed, the distance between the carrier 1 and the magnet 3 is nevertheless approximately constant. Due to the friction, the grinding bearings can scratch the surface of the film during transport.
- a one-sided storage is provided. If the foil is deformed, e.g. due to tension during drying of the applied coating paste, it can also detach locally from a bearing and lift off. This not only makes transport more difficult, but the distance from the magnet 3 then no longer corresponds to the predetermined distance value, but has increased.
- Figures 5-8 show double direction bearings.
- a contacting bearing such as a slide or roller bearing could damage the coating on the top of the film.
- An air bearing in turn, could, as shown in Figure 6, block access to the upper, coated side, which could make drying more difficult, for example.
- a vacuum pump 29 is provided as a vacuum bearing, which produces a contact pressure force on the air bearing 22 by the suction effect.
- the upper, coated side is freely accessible here.
- FIGS. This tensile force is achieved by a convex guide course, which is curved relative to the transport direction and away from the air bearings 22, because the carrier 1 has to exert a tensioned counterforce against the supporting force of the air bearings 22 in order to maintain the convex shape.
- the magnets 3 In addition to the air bearings 22, the magnets 3 must also be arranged at an angle to one another, as can be seen in Figure 7, or the magnet is bent and thus generates the corresponding magnetic field with the desired course of the field lines or the desired field distribution, as shown in Figure 8 .
- the curvature cannot be chosen to be arbitrarily large, and adapting the course of the field lines to the curvature is also not easy from a technical point of view, because a comparable field strength should always prevail over a region of the carrier 1, especially transversely to the transport direction.
- the carrier 1 With an angled magnet arrangement, as can be seen from FIG. 7, the carrier 1 also runs slightly angled at the transition points between two magnets arranged at an angle to one another.
- FIG. 9 shows a schematic representation of a coating device 30 for coating a film F or a carrier 1.
- the film F or the carrier 1 is provided with paste in the application station 31 and then fed to a drying module 32 for drying the paste in the transport direction T.
- the drying module 32 includes a specific number n of individual stations 32.1, 32.2, ..., 32.nl, 32.n, which are connected in series.
- the carrier 1 runs back again, reversing direction, for example in order to be coated on the other side.
- FIG. 10 shows the technical implementation of an air bearing 22 for a coating device according to the invention.
- the air bearing 22 included a mounting plate 23 as a base plate for mounting within the system.
- the surface 24 facing the object to be stored is designed as a porous graphite surface in order to be able to let air through and form an air cushion.
- air connections 25 are provided on the lateral sections.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Coating Apparatus (AREA)
- Magnetic Bearings And Hydrostatic Bearings (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021105658.6A DE102021105658A1 (de) | 2021-03-09 | 2021-03-09 | Beschichtungsvorrichtung mit stabiler folienführung |
| PCT/EP2022/056012 WO2022189491A1 (de) | 2021-03-09 | 2022-03-09 | Beschichtungsvorrichtung mit stabiler folienführung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4226435A1 true EP4226435A1 (de) | 2023-08-16 |
Family
ID=81074213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22714143.9A Withdrawn EP4226435A1 (de) | 2021-03-09 | 2022-03-09 | Beschichtungsvorrichtung mit stabiler folienführung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20230117887A1 (de) |
| EP (1) | EP4226435A1 (de) |
| JP (1) | JP2024510909A (de) |
| CN (1) | CN116918090A (de) |
| DE (1) | DE102021105658A1 (de) |
| WO (1) | WO2022189491A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN121020171A (zh) * | 2025-08-29 | 2025-11-28 | 江苏世之高智能装备有限公司 | 一种具备智能视觉检测的投收板机 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08114384A (ja) | 1994-10-14 | 1996-05-07 | Kao Corp | ウエブの浮上搬送装置 |
| CN2819486Y (zh) * | 2005-05-25 | 2006-09-20 | 北京海裕百特电池成套设备有限公司 | 电池极片双面缝模挤压涂覆机 |
| JP2008289999A (ja) | 2007-05-24 | 2008-12-04 | Toppan Printing Co Ltd | ウエブの塗工装置およびその塗工方法 |
| US8207012B2 (en) | 2008-04-28 | 2012-06-26 | Solopower, Inc. | Method and apparatus for achieving low resistance contact to a metal based thin film solar cell |
| US20100261071A1 (en) | 2009-04-13 | 2010-10-14 | Applied Materials, Inc. | Metallized fibers for electrochemical energy storage |
| DE102009041026B3 (de) | 2009-09-14 | 2010-11-18 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Vorrichtung und Verfahren zum Kontaktieren eines Objektes mit Flüssigkeit |
| WO2012124033A1 (ja) * | 2011-03-11 | 2012-09-20 | トヨタ自動車株式会社 | 非水電解質二次電池とその製造方法 |
| CN202410964U (zh) | 2011-12-29 | 2012-09-05 | 广东生益科技股份有限公司 | 涂聚酰亚胺铜箔用连续亚胺化烘箱 |
| CN105752681A (zh) * | 2016-04-22 | 2016-07-13 | 东莞市亿鑫丰精密机械设备科技有限公司 | 极片上料装置 |
| WO2018047054A1 (de) | 2016-09-06 | 2018-03-15 | Battrion Ag | Verfahren und einrichtung zur applizierung magnetischer felder auf einem gegenstand |
| JP2020053278A (ja) | 2018-09-27 | 2020-04-02 | 株式会社豊田自動織機 | 乾燥装置 |
-
2021
- 2021-03-09 DE DE102021105658.6A patent/DE102021105658A1/de not_active Withdrawn
-
2022
- 2022-03-09 EP EP22714143.9A patent/EP4226435A1/de not_active Withdrawn
- 2022-03-09 JP JP2023552277A patent/JP2024510909A/ja active Pending
- 2022-03-09 WO PCT/EP2022/056012 patent/WO2022189491A1/de not_active Ceased
- 2022-03-09 CN CN202280019319.1A patent/CN116918090A/zh active Pending
- 2022-11-22 US US18/057,858 patent/US20230117887A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| CN116918090A (zh) | 2023-10-20 |
| DE102021105658A1 (de) | 2022-09-15 |
| US20230117887A1 (en) | 2023-04-20 |
| WO2022189491A1 (de) | 2022-09-15 |
| JP2024510909A (ja) | 2024-03-12 |
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