WO2023237333A2 - Dispositif et procédé de prétraitement de bandes de matériau pour la fabrication d'éléments énergétiques enroulés - Google Patents

Dispositif et procédé de prétraitement de bandes de matériau pour la fabrication d'éléments énergétiques enroulés Download PDF

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Publication number
WO2023237333A2
WO2023237333A2 PCT/EP2023/063819 EP2023063819W WO2023237333A2 WO 2023237333 A2 WO2023237333 A2 WO 2023237333A2 EP 2023063819 W EP2023063819 W EP 2023063819W WO 2023237333 A2 WO2023237333 A2 WO 2023237333A2
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WO
WIPO (PCT)
Prior art keywords
material webs
material web
webs
transport
web
Prior art date
Application number
PCT/EP2023/063819
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German (de)
English (en)
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WO2023237333A3 (fr
Inventor
Manfred Folger
Michael Kleine Wächter
Jan Kreysern
Daniel Diedrich
Marcus Wagner
Karsten Meinke
Nils Hofmann
Torsten Mörke
Original Assignee
Körber Technologies Gmbh
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Körber Technologies Gmbh filed Critical Körber Technologies Gmbh
Publication of WO2023237333A2 publication Critical patent/WO2023237333A2/fr
Publication of WO2023237333A3 publication Critical patent/WO2023237333A3/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0404—Machines for assembling batteries
    • H01M10/0409—Machines for assembling batteries for cells with wound electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0431—Cells with wound or folded electrodes

Definitions

  • the invention relates to a device for the pretreatment of material webs for the production of wound energy cells, comprising at least two feed devices each designed and set up to feed at least one material web, a transport device for transporting the material webs through the device, the transport device having at least two transport elements for transporting at least one Comprises material web along a transport section, wherein the transport device is designed and set up to transport the material webs one above the other at least in regions by means of the transport elements in order to provide an arrangement lying one on top of the other.
  • the invention further relates to a method for the pretreatment of material webs for the production of wound energy cells, comprising the steps of providing at least two material webs by means of at least two feed devices, transporting the material webs by means of a transport device, the transport device having at least two transport elements for transporting at least one material web along a Transport section includes, wherein the material webs are transported one above the other at least in areas by means of the transport elements in order to provide a superimposed arrangement of the material webs.
  • Energy cells or energy storage devices in the sense of the invention are used, for example, in motor vehicles, other land vehicles, ships, aircraft or in stationary systems such as photovoltaic systems in the form of battery cells or fuel cells, in which very large amounts of energy have to be stored over long periods of time.
  • energy cells regularly have a winding of material webs, which serve as the starting material. rials serve for such energy cells.
  • the winding material is typically selected from four anode-cathode and separator webs of different lengths, which are present, for example, as a film or generally as a material web.
  • the material webs are usually fed separately to a winding core on different paths.
  • the material webs are regularly pre-cut to the desired width and/or length in an upstream manufacturing process and then wound accordingly in downstream devices or process steps.
  • the material webs of the anodes and cathodes are cut, for example, from an endless web and then wound up with an endless web of separator material in the final winding process.
  • the material webs must regularly have a specific width and length so that an accurately wound energy cell can be formed.
  • the supply of material webs to the winding core cannot take place continuously in the known devices and methods, which means that there is a high logistical effort and extensive control and regulation processes also have to be carried out.
  • the material webs usually consist of very thin flat elements, which tend to suffer from loss of quality, particularly in the event of compression and torsional stress, which is why there are limits on transport speeds and transport guides. If several material webs are connected to one another, there is also the risk that they will break or be damaged during the winding process because the resulting composites are too rigid. In addition, the material webs regularly slip during the winding process, which leads to rejects and loss of quality in the wound energy cells.
  • the installation space in the known devices is also very limited during the winding process around the winding core, since a close provision of the material webs is desired in order to ensure precise winding. However, due to the limited installation space, only energy cells with a small diameter can be produced for the respective winding.
  • the known devices and methods are therefore relatively inflexible in terms of machine and winding size and, at the same time, require a large amount of space for handling and providing the material webs.
  • the task remains to propose an appropriate procedure.
  • At least one pretreatment station is provided, which is designed and set up to connect at least two material webs lying one on top of the other at least in some areas, the at least two material webs forming a material web composite at least in some areas.
  • the device according to the invention ensures that the at least two material webs can be connected to one another at least in some areas by means of the pretreatment station before winding.
  • at least two of the material webs can create a “common” beginning through the material web composite, which can serve as a starting point for a downstream winding.
  • at least two of the material webs can be connected to one another at one end of the web.
  • an intermediate product can be produced, which can be used in a downstream winding process with a single material web from a multi-layer number of material webs lying on top of each other and connected in some areas can be introduced.
  • the connected/pretreated material webs can be pulled and moved and fed together “as one material web,” for example to a downstream winding process.
  • the pretreated material webs can then be alternately fed to several rolling processes, with one material web resulting in n rolls. This reduces the number of feeds and/or transport devices required during the winding process, resulting in faster and more flexible production of energy cells.
  • the material webs connected in areas can also be transported more flexibly, which means that an increased number of windings and geometries of the energy cells can be produced and the risk of the material webs slipping or breaking is reduced.
  • the material web composite produced in regions is preferably irreversible, so that the material webs are continuously connected to one another.
  • Such a fixation can be provided, for example, for transporting material webs within a device, machine or system complex.
  • the pretreatment station can preferably include further means and/or elements, for example to support and/or form and set up a mechanical, cohesive and/or positive connection between the at least two material webs.
  • the material webs are preferably endless webs and more preferably comprise at least one material web of a separator material, which is also referred to, among other things, as a separator web, separator material web or separator film. More preferably, at least one further material web is formed from an anode or cathode web, which are also referred to as anode material web or cathode material, anode foil or cathode foil.
  • the at least two material webs comprise two separator material webs, which can be connected to one another at least in some areas by means of the pretreatment station to form a material web composite. For the purposes of the invention, it is not necessary that only two material webs can be connected to one another to form a material web composite.
  • At least one further material web between the material webs to be connected, in particular in the case of two separator material webs, at least one further material web,
  • an anode or cathode material web can be arranged at least partially between them in order to form and set up a corresponding material web composite.
  • lying one on top of the other means that the material webs are arranged one on top of the other at least in sections. Lying one on top of the other in the sense of the invention can therefore mean that the material webs are spaced apart or arranged one on top of the other with essentially no spacing, with a substantially congruent arrangement of the material webs being further preferably provided. If the material webs are arranged at a distance, they can preferably be transported using independent means of transport; if they are arranged without a distance, the material webs can preferably be transported using a means of transport.
  • one of the material webs is arranged only for a certain section on another material web; it is preferably conceivable that an anode or cathode material web can each be arranged completely on a separator material web and/or is covered by a separator material web.
  • the idea of the invention also includes devices whose width is adjusted in such a way that a plurality or plurality of material webs can be pre-treated in parallel at the same time.
  • Such devices according to the invention are preferably designed and set up to be variable, in particular in terms of the (machine) width, so that several material webs can be transported next to one another or in parallel by means of the transport device.
  • a single device and a single pretreatment station a plurality or plurality of at least two material webs can be connected to one another at least in some areas, with the at least two material webs forming a material web composite at least in some areas.
  • a plurality or number of material webs are processed in parallel on a device by adjusting the width of the device components accordingly.
  • a preferred embodiment is characterized in that at least one cutting device designed and set up for cutting a material web is arranged along the transport section.
  • the at least one cutting device makes it possible to cut at least one or each of the material webs and/or the material web composite.
  • the cutting devices are preferably intended for cutting endless webs to length. More preferably, a material web is cut along and/or transversely to the transport direction of the material web.
  • the cutting device provides a wider range of applications for the device, for example by allowing wider material webs to be cut into narrower material webs with the desired dimensions.
  • material webs can be cut according to a specified cut.
  • a different cutting pattern can alternatively or additionally be carried out by means of the cutting device, for example special recesses, conductor tracks or specific further cut images.
  • the cutting devices can be designed and set up, for example, by a cutting means and a counter drum.
  • the cutting means cuts the material web guided on the counter drum with the predetermined cutting sequence or length, which is defined by the cutting process and/or the corresponding cutting means.
  • the cutting device can preferably comprise a punching, laser, knife or thermal cutting device and can be designed and set up to carry out the cutting process.
  • At least one pretreatment station is designed and set up as a pressure rolling station comprising a counter-position in order to form, at least in some areas, a material web composite of at least two material webs.
  • a pressure rolling station comprising a counter-position in order to form, at least in some areas, a material web composite of at least two material webs.
  • the pressure rolling station comprises at least one temperature-controlled pressure roller, designed and set up to form, at least in regions, a thermal material web composite of at least two material webs.
  • a temperature-controlled pressure roller is particularly advantageous when forming a material web composite with at least two separator material webs, since these generally consist of thermally activated plastics such as PE or PP. Thermal treatment of such plastics enables the creation of a material web composite in a simple manner.
  • the temperature-controlled pressure roller is preferably designed and set up as a heatable pressure roller. Alternatively or additionally, the temperature-controlled pressure roller can also be designed and set up for cooling, for example in order to support the formation of a material web composite when gluing is intended.
  • the temperature-controlled pressure roller is preferably designed and set up to be controllable and/or regulated in order to provide a supply of thermal energy or cooling as required.
  • it can be provided, for example, to form a thermal material web composite using laser and/or infrared radiation.
  • a disadvantage in this context can be the lack of a counter-support to provide an appropriate joint.
  • a desired counter-position can be produced, for example, using negative pressure.
  • At least one pretreatment station comprises a lamination device, a gluing device, a welding device and/or an embossing device, designed and set up to connect at least two material webs at least in regions to form a material web composite.
  • at least one pretreatment station comprises a lamination device, a gluing device, a welding device and/or an embossing device, designed and set up to connect at least two material webs at least in regions to form a material web composite.
  • four feed devices are each provided for feeding at least one material web, the material webs preferably being two separator material webs and one anode material web and one cathode material web.
  • the four material webs consisting of two separator material webs and one anode material web and one cathode material web generally form the starting material for wound energy cells.
  • a further expedient embodiment of the invention is characterized in that the material webs can be fed to the transport device by means of the feed devices in such a way that the material webs can be arranged one on top of the other in a predetermined sequence, wherein preferably the cathode material web or the cathode material web can be arranged between two separator material webs.
  • material webs of energy cells are usually wound closely together in the longitudinal direction. An appropriate structure is essential for producing a functioning energy cell.
  • a cathode material web is usually wound together with a corresponding anode material web and separator material webs in between, for example into a roll.
  • a preferred development of the invention is characterized in that the material webs can be transported by means of the transport device in such a way that the material webs can be arranged one on top of the other in a predetermined sequence, wherein preferably the anode material web or the cathode material web can be arranged between two separator material webs.
  • the transport device is preferably controllable in such a way that the material webs fed by the feed devices can be transported accordingly by means of the transport device.
  • An expedient embodiment of the invention is characterized in that the pretreatment station is designed and set up to connect the two separator material webs lying on top of each other at least in some areas, the at least two separator material webs forming a material web composite at least in some areas.
  • the pretreatment station is designed and set up to connect the two separator material webs lying on top of each other at least in some areas, the at least two separator material webs forming a material web composite at least in some areas.
  • the anode and/or the cathode material webs can then preferably also be connected to the separator material webs that have already been connected to form a material web composite.
  • the separator material webs which are connected to one another at least in some areas, can function as an independent winding core around which the further material webs can be wound during the winding process.
  • At least one support device is provided, designed and set up to place an additional material web section on at least part of a material web in order to connect the additional material web section with at least one material web at least in some areas by means of at least one pretreatment station.
  • Such support devices are preferably arranged upstream of a pretreatment station in order to then form and set up a material web composite comprising the additional material web section.
  • the support device enables direct interaction in order to place at least one additional material web section on at least one material web, that is to say, to form at least one superficial support of a material web.
  • Such additional material web sections can preferably connect two material webs to one another at a connection point.
  • the additional material web section is designed, for example, as a tensile layer in order to optimize the load capacity of the connection point, that is to say to increase or decrease it or to adapt it if necessary. For example, higher tensile forces can be transmitted using additional material web sections.
  • an additional material web section it is possible for an additional material web section to function as the start of the winding, whereby a stiff winding core can be provided.
  • the additional material web section is placed on the topmost material web or webs.
  • the at least one support device is preferably arranged downstream of the at least one cutting device.
  • At least one of the at least two feed devices comprises a buffer device for the delayed provision of a material web.
  • the buffer device is preferably designed for this purpose and set up to adapt a route of the material webs during feeding in such a way that the route of the feed can be changed.
  • the material webs for example, have to cover a longer distance, which means that the material webs can be made available to the pretreatment station with a delay, for example.
  • the buffer device comprises a tensioning mechanism in order to set a desired web tension for material webs.
  • the buffer device is preferably designed and set up as a so-called “dancer”.
  • the object is also achieved by the method mentioned at the beginning in that the at least two material webs are connected one on top of the other at least in some areas by means of a pretreatment station, the at least two material webs forming a material web composite at least in some areas.
  • One of the advantages of the proposed method is that the material webs are connected to one another at least in some areas by means of the pretreatment station before winding. In this way, it is possible, for example, for at least two of the material webs to create a “common” beginning through the material web composite, which can serve as a starting point for a downstream winding. Alternatively or additionally, at least two of the material webs can be connected to one another at one end of the web.
  • the at least partial production of a material web composite by means of the at least one pretreatment station provides a possibility of joining material webs together before winding in order to then further process the material webs lying on top of one another.
  • the pretreated material webs are then further processed into a wound energy cell.
  • an intermediate product is produced which can be introduced in a downstream winding process with a single material web from a plurality of material webs lying on top of each other and connected in regions.
  • the connected/pretreated material webs can be exposed to higher mechanical forces, which is why they can be pulled and moved more strongly in processing steps and can be fed together “as one material web”, for example to a downstream winding process.
  • the pretreated material webs can then be alternately fed to several rolling processes, with one material web resulting in n rolls. This leads to faster and more flexible production of energy cells.
  • the material webs connected in certain areas can also be transported more flexibly, allowing for an increased number of windings and geometries of the energy. Gie cells can be created, which also reduces the risk of the material webs slipping or breaking.
  • the material web composite produced in regions is preferably irreversible, so that the material webs are continuously connected to one another. In some embodiments, it may be useful for the material web composite to be designed to be reversible.
  • a further development is characterized in that at least one of the material webs is cut using a cutting device.
  • a material web composite of at least two material webs is formed at least in some areas by means of at least one pretreatment station designed and set up as a pressure rolling station comprising a counter-position.
  • An expedient embodiment of the invention is characterized in that at least one material web is fed by means of four feed devices, the material webs preferably being two separator material webs and one anode material web and one cathode material web.
  • a further preferred embodiment of the invention is characterized in that the material webs are fed to the transport device by means of the feed devices in such a way that the material webs are arranged one on top of the other in a predetermined sequence, the anode material web or the cathode material web preferably being arranged between two separator material webs.
  • a preferred development of the invention is characterized in that the material webs are transported by means of the transport device in such a way that the material webs are arranged one on top of the other in a predetermined sequence, the anode material web or the cathode material web preferably being arranged between two separator material webs.
  • a further expedient embodiment of the invention is characterized in that, by means of the pretreatment station, the two separator material webs are connected to one another at least in some areas, with the at least two separator material webs forming a material web composite at least in some areas.
  • a further expedient embodiment of the invention is characterized in that an additional material web section is placed on at least part of a material web by means of at least one provided support device in order to connect the additional material web section with at least one material web at least in regions by means of at least one pretreatment station.
  • a preferred development of the invention is characterized in that at least one material web is provided in a delayed manner by means of at least one buffer device comprising the at least one feed device.
  • FIG. 1 shows a schematic representation of a device according to the invention in cross section
  • Fig. 2 is a schematic representation of a further embodiment of a device according to the invention in cross section and
  • 3 a to c each show a schematic representation of preferred embodiments of a material web composite produced using the device according to the invention.
  • the device according to the invention is described in more detail using the aforementioned figures.
  • the devices 10 shown in the drawings are designed and set up as an independent and separate device 10 as an example.
  • the invention relates in the same way to comparable devices 10, which are integrated in a more complex system with several assemblies or upstream and/or downstream further device or machine components.
  • Such devices 10 can be designed and set up to be variable, in particular in terms of (machine) width, so that several material webs can be processed in parallel using the device.
  • a plurality or number of material webs 11, 12, 13, 14 can be processed in parallel on a device 10 by adjusting the width of the device components accordingly.
  • the intended facilities and the respective means must be adapted accordingly in order to provide broad scalability.
  • Such material webs 11, 12, 13, 14 are produced in a manufacturing machine, which can include a device 10 according to the invention and/or which a device 10 according to the invention is arranged downstream.
  • a manufacturing machine not shown in the figures - preferably comprises different steps in order to produce the corresponding material webs 11, 12, 13, 14 with the intended properties for producing a wound energy cell.
  • the material webs 11, 12, 13, 14 are generally provided as endless webs and can already be pre-cut in the intended lengths and/or widths.
  • the devices 10 each comprise at least two feed devices 15, 16, 17, 18, each designed and set up to feed at least one material web 11, 12, 13, 14, a transport device 19 for transporting the material webs 11, 12, 13, 14 through the device 10 , wherein the transport device 19 comprises at least two transport elements 20 for transporting at least one material web 11, 12, 13, 14 along a transport section.
  • the transport section represents the route over which the at least two material webs 11, 12, 13, 14 can be transported.
  • the transport device 19 is designed and set up to transport the material webs 11, 12, 13, 14 one above the other at least in some areas by means of the transport elements 20 in order to provide an arrangement lying one on top of the other.
  • the device 10 comprises two feed devices 15, 16 for feeding two material webs 11, 12.
  • a section of the device 10 is shown, which preferably comprises further means and device components. One in the fig.
  • the further embodiment of the device 10 according to the invention shown in FIG. 2 has four feed devices 15, 16, 17, 18 each for feeding at least one material web 11, 12, 13, 14.
  • the material webs 11, 12, 13, 14 can be arranged one on top of the other at least in sections by means of the transport device 19 and can be transported by means of the transport elements 20.
  • the device 10 is characterized according to the invention in that at least one pretreatment station 21 is provided, which is designed and set up to connect at least two material webs 11, 12, 13, 14 lying one on top of the other at least in some areas, the at least two material webs forming a material web composite 22 at least in some areas .
  • 1 has a pretreatment station 21 which connects the two material webs 11, 12 to one another at least in some areas to form a material web composite 22.
  • three pretreatment stations 21 are provided in the preferred embodiment of the device 10, with at least two of the supplied material webs 11, 12, 13, 14 being able to be connected to one another at least in some areas to form a material web composite 22.
  • the material webs 11 and 12; 13 and 14 as well as 11 and 13 can be connected to one another at least in some areas.
  • the material webs 13 and 14 can, for example, only be connectable to one another in certain areas, while the material webs 11 and 12 as well as 13 and 14 can be connected to one another essentially over the entire transport section.
  • the device 10 is shown in cross section and, as an example, a material web 11, 12, 13, 14 is shown on the feed devices 15, 16, 17, 18.
  • a plurality or plurality of material webs 11, 12, 13, 14 can be transported simultaneously, that is, for example next to one another, within the device 10 and can be formed into a material web composite 22 at least in some areas by means of the at least one pretreatment station 21.
  • at least one cutting device 23 designed and set up for cutting a material web 11, 12, 13, 14 is arranged along the transport section.
  • the cutting devices 23 are each formed, by way of example, in FIGS. 1 and 2 by a cutting means 24 and a counter drum 25.
  • the counter drum 25 can alternatively also be generally designed as a counter support. By means of the cutting devices 23 they are on the counter drum
  • 25 guided material webs 11, 12, 13, 14 can preferably be cut in terms of their length and / or width. Alternatively or additionally, certain cutting patterns can preferably be carried out.
  • the material webs 11, 12, 13, 14 are cut to length to a predetermined length, which is defined by the cutting process and/or the corresponding cutting means 24.
  • the cut material webs 11, 12, 13, 14 are each fed to the corresponding pretreatment station 21.
  • the counter drum 25 preferably also functions as a transport element 20 in order to transport the material webs 11, 12, 13, 14 in the transport direction along the transport section.
  • At least one pretreatment station 21 is a counter-position
  • the counter support 26 can preferably be drum-shaped. In the embodiments of FIGS. 1 and 2, the counter support 26 is shown as a drum, which also functions as a counter drum 25 for the cutting device 23 and as a transport element 20 or transport drum. In further embodiments, the corresponding device components can be present separately without forming double or multiple functions for the other devices.
  • the pressure rolling station 27 comprises at least one temperature-controlled pressure roller 28, designed and set up to form at least partially a thermal material web composite 22 from at least two material webs 11, 12, 13, 14. A thermally produced material web composite 22 can therefore preferably be produced by means of the pretreatment station 21.
  • the thermal energy can preferably be introduced through heat conduction, heat radiation and/or through convection.
  • the material web composite 22 can be produced by joining (e.g. embossing). If necessary, auxiliary materials can be used for this purpose, in particular adhesives. More preferably includes at least one Pretreatment station 21 a lamination device, a gluing device, a welding device and / or an embossing device, designed and set up to connect at least two material webs 11, 12, 13, 14 at least in areas to form a material web composite 22.
  • four feed devices 15, 16, 17, 18 can each be provided for feeding at least one material web 11, 12, 13, 14, the material webs 11, 12, 13, 14 preferably being two Separator material webs 11, 13 and each an anode material web 12 and a cathode material web 14.
  • the arrangement of the feed devices 15, 16, 17, 18 and the material webs 11, 12, 13, 14 in FIGS. 1 and 2 only represent preferred embodiments. Depending on the desired material web composite 22 or energy cell to be produced, the arrangement may be useful , the number and/or the selection of the feed devices 15, 16, 17, 18 and the material webs 11, 12, 13, 14 must be adapted accordingly.
  • FIG. 3a shows an example of a schematic representation of a material web composite 22 produced using the device 10 according to the invention.
  • Fig. 3a shows a section of material webs 11, 12, 13, 14 lying one on top of the other with an at least partially material web composite 22.
  • the material web composite 22 has four material webs 11, 12, 13, 14, at least the material webs 11 and 13 being connected to one another.
  • the material webs 11, 12, 13, 14 can be fed to the transport device 19 by means of the feed devices 15, 16, 17, 18 in such a way that the material webs 11, 12, 13, 14 can be arranged one on top of the other in a predetermined sequence, preferably the Anode material web 12 or the cathode material web 14 can be arranged between two separator material webs 11, 13.
  • the material webs 11, 12, 13, 14 can be transported by means of the transport device 19 in such a way that the material webs 11, 12, 13, 14 can be arranged one on top of the other in a predetermined sequence, with preferably the anode material web 12 or the cathode material web 14 between two separator material webs 11, 13 can be arranged.
  • the pretreatment station 21 in the preferred embodiment is designed and set up to process the two separator material webs 11, 13 to be connected lying on top of each other at least in some areas, the at least two separator material webs 11, 13 forming a material web composite 22 at least in some areas.
  • a pretreatment station 21 is provided at the end of the device 10, that is to say at the beginning of the material webs 11, 12, 13, 14, which is intended for at least partially connecting the two separator material webs 11, 13.
  • An exemplary material web composite 22 with two connected separator material webs 11, 13 is shown in FIG. 3a.
  • the two separator material webs 11, 13 are provided lying one on top of the other, without another material web 12, 14 being arranged between them or lying on top of them.
  • a winding start can be created, for example, which can function as a winding core for subsequent winding of an energy cell.
  • a pretreatment station 21 preferably only a region-by-area connection of the two separator material webs 11, 13 is provided, in particular in the area in which only two separator material webs 11, 13 are present. If necessary, the pretreatment station 21 or further pretreatment station 21 can connect further material webs 11, 12, 13, 14 to one another to form a material web composite 22.
  • At least one support device can be provided, which is designed and set up to place an additional material web section 29 on at least part of a material web 11, 12, 13, 14 in order to hold the additional material web section 29 with at least one Material web 11, 12, 13, 14 to be connected at least in some areas by means of at least one pretreatment station 21.
  • 3b and 3c each show a section of material webs 11, 12, 13, 14 lying one on top of the other with a material web composite 22, which have an additional material web section 29.
  • the additional material web section 29 rests on two anode material web sections 12 and, on the one hand, connects the two anode material web sections 12 in the horizontal and the separator material web 13 or 11 with the additional material web section 20, or the two separator material webs 11 and 13 with the additional material web section 20 in the vertical .
  • the additional material web section 29 lies on two cathode material web sections 14 and, on the one hand, connects the two cathode material web sections 14 in the horizontal and the separator material web 13 with the additional material web section 20, or the two separator material webs 11 and 13 with the additional material web section 20 in the vertical.
  • At least one of the at least two feed devices 15, 16, 17, 48 comprises a buffer device 30 for the delayed provision of a material web 11, 12, 13, 14.
  • the material webs 11, 12, 13, 14 can do this, for example, by means of the transport device 19 or be transported by at least one transport element 20.
  • the buffer device 30 is preferably designed and set up to adapt the material webs 11, 12, 13, 14 during feeding in such a way that the route of the feeding can be changed. By adjusting the route, the material webs 11, 12, 13, 14, for example, have to cover a longer distance, whereby the material webs 11, 12, 13, 14, for example, can be made available to the at least one pretreatment station 21 with a delay.
  • the material webs 11, 12, 13, 14 can be provided to the pretreatment station 21 in an accelerated manner. This means, for example, that the arrangement of the corresponding material webs 11, 12, 13, 14 one on top of the other can be controlled.
  • the buffer device 30 comprises a tensioning mechanism in order to set a desired web tension for material webs 11, 12, 13, 14.
  • the buffer device 30 is preferably designed and set up as a so-called “dancer”.
  • the procedure is explained in more detail below using the drawing.
  • the method is used for the pretreatment of material webs 11, 12, 13, 14 for the production of wound energy cells, comprising the steps of providing at least two material webs 11, 12, 13, 14 by means of at least two feed devices 15, 16, 17,
  • the transport device 19 comprises at least two transport elements 20 for transporting at least one material web 11, 12, 13, 14 along a transport section, the material webs 11, 12, 13, 14 being transported one above the other at least in regions by means of the transport elements 30 in order to lie one on top of the other Arrangement of the material webs 11, 12, 13, 14 to provide.
  • 1 and 2 each show corresponding devices 10 for providing the method according to the invention.
  • This method is characterized according to the invention in that the at least two material webs 11, 12, 13, 14 are connected one on top of the other at least in some areas by means of a pretreatment station 21, the at least two material webs 11, 12, 13, 14 forming a material web composite at least in some areas 22 form.
  • 1 has a pretreatment station 21 by means of which two supplied material webs 11, 12 are connected to one another at least in some areas to form a material web composite 22.
  • two pretreatment stations 21 are provided in the preferred embodiment of the device 10, with at least two of the supplied material webs 11, 12, 13, 14 being connected to one another at least in some areas to form a material web composite 22.
  • the material webs 11 and 12; 13 and 14 as well as 11 and 13 are connected to one another at least in some areas.
  • the material webs 13 and 14 can, for example, only be connected to one another in certain areas, while the material webs 11 and 12 as well as 13 and 14 are connected to one another essentially over the entire transport section.
  • a plurality or plurality of material webs 11, 12, 13, 14 can preferably be connected simultaneously, that is, for example next to one another, by means of the at least one pretreatment station 21, at least in some areas, to form a material web composite 22.
  • the pretreatment station 22 is in operative connection with the at least two material webs 11, 12, 13, 14 in order to form the material web composite 22.
  • the material web composite 22 makes the material webs 11, 12, 13, 14 more resistant, particularly with regard to mechanical stress, and the material web composite 22 can also be suitable as a starting point for winding.
  • the material webs 11, 12, 13, 14 are preferably made available to the feed devices 15, 16, 17, 18 by wound endless webs - not shown in the figures - or can be produced directly in advance in upstream manufacturing machines - also not shown. More preferably, at least one of the material webs 11, 12, 13, 14 is cut by means of a cutting device 23. Using the cutting device 23, different cuts can be made for different purposes. For example, a material web 11, 12, 13, 14 can be cut to length and/or cut to a predetermined width.
  • a material web composite 22 made up of at least two material webs 11, 12, 13, 14 is formed at least in some areas by means of at least one pretreatment station 21 designed and set up as a counter-position 26.
  • the pressure rolling station 27 can apply a force to at least two material webs 11, 12, 13, 14, with the counter-position 26 applying the corresponding counterforce and/or serving as an antidote.
  • the material web composite 22 is produced in the intended area.
  • thermal energy is preferably introduced onto the material webs 11, 12, 13, 14, whereby, for example, cohesive connections can be formed. As shown in Fig.
  • At least one material web 11, 12, 13, 14 is preferably fed by means of four feed devices 15, 16, 17, 18, with the material webs 11, 12, 13, 14 preferably two separator material webs 11, 13 and each an anode material web 12 and a cathode material web 14.
  • the material webs 11, 12, 13, 14 are preferably fed to the transport device 19 in such a way that the material webs 11, 12, 13, 14 are arranged one on top of the other in a predetermined sequence, preferably the anode material web 12 or the cathode material web 14 is arranged between two separator material webs 11, 13.
  • the material webs 11, 12, 13, 14 are transported by means of the transport device 19 in such a way that the material webs 11, 12, 13, 14 are arranged one on top of the other in a predetermined sequence, with preferably the anode material web 12 or the cathode material web 14 between two separator material webs 11, 13 is arranged.
  • an additional material web section 29 is placed on at least part of a material web 11, 12, 13, 14 by means of at least one provided support device in order to at least partially connect the additional material web section 29 with at least one material web 11, 12, 13, 14 by means of at least one pretreatment station 21 to connect.
  • the additional material web section 29 is placed on at least part of a material web 11, 12, 13, 14 preferably online and in front of a pretreatment station 21.
  • a material web composite 22 produced by the method is shown in FIG. 3a.
  • the corresponding material web composite 22 is produced by using the pretreatment station 21 to connect the two separator material webs 11, 13 lying on top of each other at least in some areas, the at least two separator material webs 11, 13 forming a material web composite 22 at least in some areas.
  • 3b and 3c show a material web composite 22 produced by the method with an additional material web section 29.
  • the corresponding corresponding material web composite 22 is produced by first placing an additional material web section 29 on at least one material web 11, 12, 13, 14 and by means of the pretreatment station 21 the additional material web section 29 and the at least one material web 11, 12, 13, 14 are connected to one another at least in some areas be, with a corresponding material web composite 22 being formed at least in some areas.
  • At least one material web 11, 12, 13, 14 is provided in a delayed manner by means of at least one buffer device 30 comprising the at least one feed device 15, 16, 17, 18. 1 and 2, the feed devices 16 and 18 each include a buffer device 30.
  • the buffer device 30 is designed and set up here as a so-called “dancer”, whereby the material webs 12 and 14 can be provided with a corresponding delay.
  • the corresponding material webs 12 and 14 can be provided with a delay on the material webs 11 and 13 lying on them, whereby, for example, a spacing between two material webs 12 or 14 can be created, in particular if these are separated by means of the cutting device 23.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

L'invention concerne un dispositif (10) pour le prétraitement de bandes de matériau (11, 12, 13, 14) pour la fabrication d'éléments énergétiques enroulés, qui comprend au moins deux unités d'alimentation (15, 16, 17, 18) conçues respectivement pour fournir au moins une bande de matériau (11, 12, 13, 14), un dispositif de transport (19) conçu pour transporter les bandes de matériau (11, 12, 13, 14) à travers le dispositif (10), le dispositif de transport (19) comprenant au moins deux éléments de transport (20) pour transporter au moins une bande de matériau (11, 12, 13, 14) le long d'un segment de transport ; le dispositif de transport (19) est conçu pour transporter les bandes de matériau (11, 12, 13, 14) avec au moins des régions les unes sur les autres au moyen des éléments de transport (20) afin d'obtenir un ensemble empilé, caractérisé en ce qu'au moins une station de prétraitement (21) est utilisée et conçue pour relier au moins deux bandes de matériau (11, 12, 13, 14) les unes sur les autres au moins dans certaines régions, les au moins deux bandes de matériau (11, 12, 13, 14) formant un composite de bande de matériau (22) au moins dans certaines régions. Cette invention concerne en outre un procédé correspondant.
PCT/EP2023/063819 2022-06-09 2023-05-23 Dispositif et procédé de prétraitement de bandes de matériau pour la fabrication d'éléments énergétiques enroulés WO2023237333A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102022114553.0A DE102022114553A1 (de) 2022-06-09 2022-06-09 Vorrichtung und Verfahren zur Vorbehandlung von Materialbahnen für die Herstellung von gewickelten Energiezellen
DE102022114553.0 2022-06-09

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WO2023237333A2 true WO2023237333A2 (fr) 2023-12-14
WO2023237333A3 WO2023237333A3 (fr) 2024-04-18

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2849283B1 (fr) 2002-12-23 2005-10-28 Batscap Sa Architecture de dispositif de bobinage d'ensemble de stockage d'energie electrique
KR101355834B1 (ko) * 2010-12-02 2014-01-28 주식회사 엘지화학 이차전지 제조용 라미네이션 장치
DE102021207364A1 (de) * 2021-07-12 2023-01-12 Körber Technologies Gmbh Maschine, Verfahren und Zwischenprodukt für die Energiezellen produzierende Industrie

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WO2023237333A3 (fr) 2024-04-18

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