Method and apparatus for providing an electrode string using liner material and uses thereof

Abstract

In order to reduce the cost and effort of cell manufacturing while maintaining high quality in a continuous process, the present invention provides a method for providing at least one electrode strand (32, 88) having at least one separator layer (34.1, 34.2) and at least one electrode active material (50.1, 50.2, 36.1, 36.2) fixed thereto, the method comprising: a) A step of laminating a first electrode active material (50.1, 36.1) to a first separator layer (34.1) using a first laminating tool (76.1) at a first laminating station (46.1). At this time, a liner layer (100) is inserted in between to prevent the material to be laminated from sticking to the first laminating tool (76.1). b) A step of laminating the second electrode active material (50.2, 36.2) onto the separator layer (34.1, 34.2) using the second laminating tool (76.2) at the second laminating station (46.2). At this time, a liner layer (100) is inserted in between to prevent the material to be laminated from sticking to the second laminating tool (76.2). Here, the same liner layer (100) is used in steps a) and b).

Description

Technology Field

[0001] The present invention relates to a method for providing an electrode strand comprising at least one separator layer and at least one electrode active material fixed thereto. Furthermore, the present invention relates to a method for manufacturing a battery cell, which manufactures a monocell or half-cell for a battery using the electrode strand providing method, and a method for manufacturing a battery cell stack, which manufactures a cell stack for a battery using the battery cell manufacturing method. Moreover, the present invention relates to an electrode strand providing device for battery manufacturing equipment and a battery manufacturing equipment equipped with the same.

[0002] The present invention belongs to the field of manufacturing electrode assemblies, particularly the field of manufacturing battery cells and cell assemblies for the same. More specifically, the present invention relates to the technical field of mass production facilities for the mass production of battery cells. In particular, it aims to mass-manufacture battery cells used in e-mobility, specifically battery cells for supplying the main power to electric vehicles such as passenger cars and trucks. Background Technology

[0004] The following literature is referenced in relation to the technical background and prior art of the present invention.

[0005] [1] EP 4 456 225 A1

[0006] [2] EP 4 456 224 A1

[0007] [3] WO 2020 / 192845 A1

[0008] [4] WO 2020 / 231186 A1

[0009] [5] CN 112909351 A

[0010] [6] EP 4 455 064 A1

[0011] References [1] through [6] disclose methods and apparatus for providing electrode strands and manufacturing monocells and battery stacks formed therefrom. In particular, references [1], [6] and [2] describe a battery cell production facility, wherein a negative electrode strand comprising a negative electrode (A) disposed on a first wound separator (S) and a positive electrode strand comprising a positive electrode (K) disposed on a second wound separator (S) are provided as electrode strands. This forms a strand composite, from which a monocell or halfcell is individualized. References [4] and [5] describe methods and apparatus for providing electrode strands for battery manufacturing, wherein the electrodes are laminated onto a separator layer using a liner (also called a sacrificial film). In contrast to, for example, the Z-folding method of battery cells, this corresponds to a continuous process. The advantage of this method is that the production volume (yield) is higher due to the continuous process. For example, within the facility, the separator, cathode, separator, and anode (SASK) are laminated together in that order. By stacking these individualized SASK layers, the foundation of the battery cell is formed.

[0012] In particular, literature [4] describes the process of manufacturing a monocell with a cathode, an anode, and two separators. In the first step, the first electrode is separated from the first electrode sheet and laminated onto the first separator. For this purpose, a first liner is used as a process aid, which is unwound from a supply roll and inserted between the first electrode and the laminating tool, and then wound back onto another roll after the first lamination step is completed. In the second lamination step, the second electrode is separated and laminated together with the second separator on the back of the first separator. At this time, another liner is used as a process aid, which is inserted between the second laminating tool and the electrode strand and then wound back.

[0013] Literature [5] describes the manufacture of a monocell in a single lamination step. To prevent the problem of the separator material sticking to the hot surface required for lamination, liners are used on each side here as well. Each liner is unwound from each supply roll before lamination and wound back onto the roll immediately after lamination. The problem to be solved

[0015] The present invention aims to change and, in particular, improve the method of providing electrode strands with high process stability and quality in terms of material costs and equipment technical costs. means of solving the problem

[0017] To solve the above problems, the present invention provides a method, apparatus, and facility according to an independent claim. Preferred embodiments are the subject of a dependent claim.

[0018] According to a first aspect, the present invention provides a method for providing an electrode strand for providing at least one electrode strand, particularly for manufacturing a battery cell, wherein the electrode strand comprises at least one separator web and at least one electrode material fixed thereto, and the method

[0019] a) a step of laminating a first electrode material to a first separator web at a first laminating station using a first laminating tool while inserting a liner web between a (first) separator and a (first) laminating tool, in particular, to prevent the material to be laminated from adhering to the first laminating tool, and

[0020] b) a step of laminating a second electrode material to a separator web, particularly to a second separator, using a second laminating tool at a second laminating station while inserting a liner web between a (second) separator and a (second) laminating tool, in particular to prevent the material to be laminated from adhering to the second laminating tool, and

[0021] The same liner web is used in steps a) and b).

[0022] Some embodiments of the electrode strand providing method include the following steps:

[0023] c) A step of guiding a continuous liner web from a first laminating station to a second laminating station.

[0024] In some embodiments, step c) may include the following step:

[0025] c1) A step of separating the liner from the first electrode strand obtained in step a) and guiding the liner through its own liner guide.

[0026] In some embodiments, step c) includes the following step:

[0027] c2) A step of guiding the liner together with the first electrode strand obtained in step a) to the second laminating station.

[0028] In some embodiments, step a) includes the following step:

[0029] a1) A step of supplying the first separator web to the first laminating station.

[0030] In some embodiments, step a) includes the following step:

[0031] a2) A step of supplying a first electrode material in the form of a first electrode segment, which is positioned relative to each other, to a first laminating station.

[0032] In some embodiments, step a) includes the following step:

[0033] a3) A step of using at least one first temperature-controlled laminating roller as a first laminating tool.

[0034] In some embodiments, step a) includes the following step:

[0035] a4) Step of unwinding the liner from the liner storage roll.

[0036] In some embodiments, step a) includes the following step:

[0037] a5) A step of supplying a liner web between the first separator web and the first laminating tool.

[0038] In some embodiments, step a) includes the following step:

[0039] a6) A step of aligning the liner web laterally so as to cover the first separator web to be laminated in step a).

[0040] In some embodiments, step a) includes the following step:

[0041] a7) A step of adjusting the web tension of the liner web when supplying to the first laminating station.

[0042] In some embodiments, step a) includes the following step:

[0043] a8) A step of adjusting the web speed of the liner web to match the speed of the first separator web supplied to the first laminating station.

[0044] In some embodiments, step a) includes the following step:

[0045] a9) A step of adjusting the position of the liner web in the direction of movement to align with the position of the individual first electrode segment supplied to the first laminating station.

[0046] In some embodiments, step a) includes the following step:

[0047] a10) A step of providing a first electrode strand comprising a first separator web and a first electrode material laminated thereto.

[0048] In some embodiments, step a) includes the following step:

[0049] a11) A step of pressing the first laminating tool onto the first separator web through the liner web.

[0050] In some embodiments, step a) includes the following step:

[0051] a12) A step of temperature-regulating the first laminating station to heat the first separator web.

[0052] In some embodiments, step b) includes the following step:

[0053] b1) A step of supplying the first electrode strand obtained in step a) to a second laminating station.

[0054] In some currently preferred embodiments, step b) includes the following step:

[0055] b2) Preferably, a step of supplying a second separator web to a second laminating station so that the separator web, on which the second electrode material is laminated at the second laminating station, becomes the second separator web.

[0056] In a possible method, the second electrode material can be laminated onto the back surface of the first separator web at the second laminating station, so that the separator web on which the second electrode material is laminated in step b) is the first separator web.

[0057] In some embodiments, step b) includes the following step:

[0058] b3) A step of laminating a second electrode material and / or a second separator web to the first electrode strand obtained in step a).

[0059] In some embodiments, step b) includes the following step:

[0060] b4) A step of supplying a second electrode material in the form of an individualized second electrode segment positioned relative to each other to a second laminating station.

[0061] In some embodiments, step b) includes the following step:

[0062] b5) A step of using at least one second laminating roller as a second laminating tool.

[0063] In some embodiments, step b) includes the following step:

[0064] b6) A step of supplying a liner web between the separator web to be laminated in step b) and the second laminating tool.

[0065] In some embodiments, step b) includes the following step:

[0066] b7) A step of laminating a second electrode material to a second separator web.

[0067] In some embodiments, step b) includes the following step:

[0068] b8) A step of providing a second electrode strand comprising a second separator web and a second electrode material laminated thereto through lamination in step b).

[0069] In some embodiments, step b) includes the following step:

[0070] b9) A step of applying pressure and / or heat to the second laminating tool.

[0071] In some embodiments, step b) includes the following step:

[0072] b10) A step of aligning the liner web laterally so as to cover the separator web to be laminated in step b).

[0073] In some embodiments, step b) includes the following step:

[0074] b11) A step of adjusting the web tension of the liner web when supplying to the second laminating station.

[0075] In some embodiments, step b) includes the following step:

[0076] b12) A step of adjusting the web speed of the liner web to match the speed of the separator web to be laminated at the second laminating station.

[0077] In some embodiments, step b) includes the following step:

[0078] b13) A step of adjusting the position of the liner web in the direction of movement to align with the position of the individual second electrode segment supplied to the second laminating station.

[0079] An example of a method for providing an electrode strand further includes the following steps:

[0080] d) A step of performing a third lamination step to perform the following at a third laminating station using a third laminating tool.

[0081] d1) particularly combining the first electrode strand obtained in step a) and the second electrode strand obtained in step b) to form a composite strand, or

[0082] d2) In particular, a step of laminating an additional layer of separator web and / or electrode material onto the electrode strand obtained in step a).

[0083] Here, the same liner web as in steps a) and b) is inserted between the third laminating tool and the material to be laminated.

[0084] Some embodiments of the electrode strand providing method further include the following steps:

[0085] e) A step of providing a liner web from a liner selected from the group including plastic film, PET film, composite material web, and plastic mixture web.

[0086] Some embodiments of the electrode strand providing method further include the following steps:

[0087] f) Step of winding the liner web after the final laminating station.

[0088] Some embodiments of the electrode strand providing method further include the following steps:

[0089] g) A step of returning the liner web to the first laminating station after the final laminating station.

[0090] Some embodiments of the electrode strand providing method further include the following steps:

[0091] h) A step that guides a liner web within an infinite guide or infinite loop.

[0092] Some embodiments of the electrode strand providing method further include the following steps:

[0093] i) A step for guiding the liner web through a deflection roller, guide roller and / or dancer system.

[0094] According to another aspect of the present invention, the present invention provides a battery cell manufacturing method for manufacturing a monocell or halfcell for a battery, the method comprising the steps of providing at least one electrode strand using an electrode strand providing method and individualizing a monocell or halfcell from the at least one electrode strand.

[0095] According to another aspect of the present invention, the present invention provides a method for manufacturing a battery cell stack for manufacturing a battery cell stack, the method comprising the steps of performing a battery cell manufacturing method according to one of the above configurations and stacking the battery cells manufactured thereby to form a single cell stack.

[0096] According to another aspect of the present invention, the present invention provides an electrode strand providing device for a battery manufacturing facility, wherein the electrode strand providing device is configured to provide at least one electrode strand comprising at least one separator web and at least one electrode material fixed thereto; and comprises a separator web providing device for providing one or more separator webs, an electrode material providing device for providing a first electrode material and / or a second electrode material, a first laminating station equipped with a first laminating tool for laminating the electrode material and the separator web, a second laminating station equipped with a second laminating tool for laminating the electrode material and the separator web, and a liner handling device for handling a liner; The above-described liner handling device is configured to guide the liner web over a first laminating tool to prevent the material to be laminated at the first laminating station from adhering to the first laminating tool, and from there over a second laminating tool to prevent the laminating material at the second laminating station from adhering to the second laminating tool.

[0097] In some embodiments of the electrode strand providing device, the liner handling device has a unwinding unit for unwinding a liner web from a storage roll.

[0098] In some embodiments of the electrode strand providing device, the liner handling device has a web tension adjusting unit for adjusting the web tension of the liner web when supplied to the first and / or second laminating station.

[0099] In some embodiments of the electrode strand providing device, the liner handling device has a web side guide for adjusting the lateral alignment of the liner web when supplied to the first and / or second laminating station.

[0100] In some embodiments of the electrode strand providing device, the liner handling device comprises a deflection roller, a guide roller and / or at least one dancer unit.

[0101] In some embodiments of the electrode strand providing device, the liner handling device has a winding unit for winding the liner web after the last laminating station.

[0102] In some embodiments of the electrode strand providing device, the liner handling device has at least one connecting station configured to connect the end of a previous liner segment and the beginning of a next liner segment to obtain a continuous liner web from a plurality of liner segments.

[0103] In some embodiments of the electrode strand providing device, the liner handling device has an infinite guide configured to guide the liner web as an infinite web from the last laminating station back to the first laminating station.

[0104] In some embodiments of the electrode strand providing device, the liner handling device has a unit for controlling the web speed of the liner web.

[0105] In some embodiments of the electrode strand providing device, the liner handling device is equipped with a computer-implemented control unit in particular.

[0106] In some embodiments, the liner handling device is provided with a separation unit for separating a liner web from a first electrode strand coming out of a first laminating station and a self-liner guide between the first and second laminating stations, and the liner guide is designed to guide the liner web from the first laminating station to the second laminating station.

[0107] Some embodiments of the electrode strand providing device include an electrode strand- and liner web guide for guiding a first electrode strand formed at a first laminating station together with a liner web to a second laminating station.

[0108] According to another aspect of the present invention, the present invention provides a battery manufacturing facility comprising one or more electrode strand providing devices according to one of the above configurations and a personalization device for personalizing battery cells from one or more electrode strands provided through the same.

[0109] Some embodiments of an electrode strand providing device or battery manufacturing facility include, in particular, a control unit implemented by a computer, and said control unit is configured to perform a method according to one of the aforementioned configurations.

[0110] The configuration of the present invention relates to the reduction of liner usage / auxiliary material in monocell production. The configuration of the present invention is particularly used in the (industrial mass) manufacturing of battery cells and batteries for electric vehicles.

[0111] A preferred configuration of an embodiment of the present invention is found in the stack assembly of a lithium-ion battery cell. In particular, a preferred application of the present invention relates to manufacturing a battery cell through a continuous process with a continuous web.

[0112] Manufacturing battery cells through a continuous process with a continuous web offers several advantages in terms of process time. This is because, when individual electrodes are implemented by lamination onto a separator, some separators may require auxiliary materials for lamination, particularly liners.

[0113] For example, during the lamination process, the separator may adhere to the relevant lamination roller by, for instance, heating of the lamination roller. A coating applied over the separator (e.g., a PVDF coating) causes the electrode to be laminated onto the separator. Additionally, due to the pressure required for this, residues of the separator (=separator material and / or separator coating residues) may form on the relevant lamination roller. To prevent this, in some embodiments, a liner is inserted between the lamination drum and the separator.

[0114] A preferred configuration of the present invention relates to the multiple use of liners (e.g., sacrificial films) as process aids in the manufacture of monocells, SAS packages, and their derivative products, in order to reduce equipment technology, installation space, and material costs.

[0115] The use of liners or process aids at the laminating station when providing electrode strands is disclosed in itself, for example, in literature [4] and [5]. However, in literature [4], the liners are used for only one lamination step and then wound back up. In literature [5], only a single lamination step is performed, and liners are used on both sides. Therefore, in the process according to the prior art, at least two separate sacrificial films (liners) are always required.

[0116] The prior art disclosed so far uses a separate feed unit for the liner, which is a process auxiliary material, for each lamination stage. Accordingly, a separate unwinding and winding device for the liner must be provided for each lamination stage. This results in increased costs (e.g., increased material requirements, increased energy requirements for the equipment, etc.), as well as increased assembly space requirements, especially in two or more lamination stages.

[0117] A preferred configuration of the present invention addresses not only the reduction of necessary process auxiliary materials (= liners) but also the reduction of the number of parts used for the reduction of the equipment footprint (e.g., energy savings) and the associated cost savings.

[0118] To achieve the objective, the liner is used in two or more lamination steps in the composition of the present invention.

[0119] Some embodiments relate to a method for providing an electrode strand to be performed in the process of manufacturing a battery cell, wherein a first electrode material is laminated onto a separator web at a first laminating station, and a second electrode material is laminated onto a separator web at a second laminating station. At this time, the same liner web is inserted between the laminating tool and the material to be laminated at the first laminating station, particularly between the laminating tool and the separator web, and between the laminating tool and the material to be laminated at the second laminating station, particularly between the laminating tool and the separator web.

[0120] For the rational integration of the system, in some embodiments, a liner is mounted on a winder, and the winder is capable of performing displacement of the tension shaft transversely with respect to the web direction so that the sacrificial film can pass through the lamination point by aligning it with the separation web.

[0121] For more precise and wrinkle-free web guidance, in the case of a coil, i.e., material wound on a roll, the coil may have lower input quality in relation to the winding of the material as the input material, for example, telescoping, i.e., when the material is wound “messily” on the roll during coil manufacturing, that is, when the side edges are not aligned with each other and are partially misaligned (the edges “move” back and forth along a specific width of the coil)—a so-called rotary frame may be used for web correction.

[0122] In some embodiments, a splice table is used in the web to connect the webs in order to efficiently replace the material provided in roll form. Depending on customer requirements, the webs of the new roll and the existing roll (=coil) can be connected to each other either automatically or manually to minimize production downtime (e.g., turnaround winder, manual splice table).

[0123] In some embodiments, a measuring roller is provided for controlling the winder and / or unwinder in relation to web tension and / or feed rate, for controlling the web tension of a liner or a composite of a liner and a half-cell (separator + electrode). In some embodiments, this task is performed by a so-called dancer as an alternative (or additionally), and said dancer additionally provides the function of storing a small amount of web in addition to pure web tension control.

[0124] In some embodiments, the speed of the liner is also precisely controlled to match the web speed of the separator web. This reduces the risk of damage or displacement during the lamination process.

[0125] In some embodiments, speed control is achieved through the measurement of the coil diameter and calculation of the winding rotation speed.

[0126] Some embodiments of the method, apparatus, and apparatus according to the present invention are based on the methods, apparatus, and apparatus described and illustrated in references [1], [2], or [6]. These references describe in detail the manufacture of half-cells, including the individualization and delivery of electrodes, and the manufacture of SAS packages. In addition to the methods, apparatus, and apparatus according to references [1], [2], or [6], embodiments of the present invention additionally use process aid materials (=liners), such as PET. In this case, the amount of such process aid materials used is reduced compared to references [4] and [5].

[0127] In some embodiments, other materials, particularly other plastics and / or other plastic mixtures, may be considered instead of a liner made of PET.

[0128] A special feature of a particularly preferred configuration of the present invention is to use a single liner in two or more lamination steps.

[0129] A preferred embodiment of the present invention has, in particular, one, several, or all of the following advantages:

[0130] · Omission of mechanical components such as winding mandrels. This presupposes simplification of the structure and / or reduction of installation space.

[0131] · Space saving through the omission of mechanical components

[0132] · Cost reduction due to reduced use of process auxiliary materials; in the configuration of the present invention, sacrificial materials are used multiple times within the process.

[0133] · The coil of the sacrificial film is used multiple times in the process, reducing downtime due to reduced material usage. Since the coils generally have different material lengths, coil replacement is performed only “once” rather than twice, as in the case where two coils are integrated into the process.

[0134] In some embodiments, the method is performed such that the separator and the sacrificial film always overlap in a “coordinated” manner. This is desirable because the electrode leaves a mark on the sacrificial film, and the mark is transferred to the separator when the relative positions of the separator and the sacrificial film change from “Station 1” (the first input of the sacrificial film in the process) to “Station 2” (the second input of the sacrificial film in the process). This reduces the risk of defective products. Brief explanation of the drawing

[0136] FIG. 1 is a schematic diagram illustrating a first embodiment of a battery manufacturing facility for manufacturing a battery cell stack. FIG. 2 is an enlarged view showing detailed part II of FIG. 1. FIG. 3 is a schematic diagram illustrating a second embodiment of a battery manufacturing facility for manufacturing a battery cell stack. FIG. 4 is an enlarged view showing detail IV of FIG. 3. FIG. 5 is a schematic diagram illustrating the possible structure of a liner web guide of a liner handling device before it flows into the first laminating station of a battery manufacturing facility. FIG. 6 is a schematic drawing illustrating another embodiment of a liner handling device equipped with an infinite guide, greatly simplified. Specific details for implementing the invention

[0137] Hereinafter, a method, apparatus (24), and facility (20) for providing at least one electrode strand (32, 88) and, in particular, for manufacturing a monocell (86) or a halfcell by individualizing a monocell (86) or a halfcell from at least one electrode strand (32, 88) are described with reference to the attached drawings.

[0138] The drawings illustrate embodiments of a battery manufacturing facility (20), and the battery manufacturing facility includes an electrode strand providing device (24) for providing at least one electrode strand (32, 88), an individualization device (90) for individualizing a battery cell from one or more electrode strands (32, 88) provided by the electrode strand providing device (24), a stacking device (26) for forming a battery cell stack (22), and a control unit (48).

[0139] At least one electrode strand (32, 88) comprises at least one separator web (34.1, 34.2) and at least one electrode material (36.1, 36.2, 50.1, 50.2) fixed thereto.

[0140] An illustrated embodiment of the electrode strand providing device (24) of the battery manufacturing facility (20) is designed to provide at least one electrode strand (88) in the form of a monocell strand (a composite strand comprising a plurality of electrode strands). In another possible embodiment, the electrode strand providing device provides a first electrode strand (32) in the form of a halfcell strand, for example, an anode strand containing an anode material, and a second electrode strand in the form of a second halfcell strand, for example, a cathode strand containing a cathode material, from which halfcells are individualized or the strands are combined to form a monocell strand.

[0141] An electrode strand providing method is performed to provide at least one electrode strand (32, 88) and includes the following steps:

[0142] a) a step of laminating a first electrode material (50.1, 36.1) to a first separator web (34.1) at a first laminating station (46.1) using a first laminating tool (76.1) (e.g., a first laminating roller or a first lamination drum) while inserting a liner web (100) to prevent the material to be laminated from adhering to the first laminating tool (76.1), and

[0143] b) A step of laminating a second electrode material (50.2, 36.2) to a separator web, here, for example, a second separator web (34.2), at a second laminating station (46.2) using a second laminating tool (76.2) (e.g., a second laminating roller or a second lamination drum) while inserting a liner web (100) to prevent the material to be laminated from adhering to the second laminating tool (76.2).

[0144] At this time, the same liner web (100) is used in steps a) and b).

[0145] An electrode strand providing device (24) illustrated in the drawing as part of a battery manufacturing facility (20) is configured to provide at least one electrode strand (88) comprising at least one separator web (34.1, 34.2) and at least one electrode material (36.1, 36.2, 50.1, 50.2) fixed thereto, and comprises a separator web providing device (44.1, 44.2), an electrode material providing device (92.1, 92.2), a first laminating station (46.1) having a first laminating tool (76.1), a second laminating station (46.2) having a second laminating tool (76.2), and a liner handling device (94).

[0146] The separator web providing device (44.1, 44.2) is configured to provide one or more separator webs (34.1, 34.2). In the illustrated embodiment, the electrode strand providing device (24) comprises a first separator web providing device (44.1) for providing a first separator web (34.1) to a first laminating station (46.1) and a second separator web providing device (44.2) for providing a second separator web (34.2) to a second laminating station (46.2).

[0147] The electrode material providing device (92.1, 92.2) is designed to provide a first electrode material (50.1, 36.1) and / or a second electrode material (50.2, 36.2). In the illustrated embodiment, the electrode strand providing device (24) comprises a first electrode material providing device (92.1) for providing the first electrode material (50.1, 36.1) to a first laminating station (46.1) and a second electrode material providing device (92.2) for providing the second electrode material (50.2, 36.2) to a second laminating station (46.2). In the illustrated embodiment, the electrode material providing device (92.1, 92.2) is each designed to provide the electrode material to each laminating station (46.1, 46.2) in the form of individual electrode segments (36.1, 36.2) spaced appropriately apart from each other.

[0148] Laminating stations (46.1, 46.2) are each used to laminate electrode material and separator web.

[0149] A liner handling device (94) is used to handle a liner (also called a sacrificial film) and is configured to guide the liner web (100) over a first laminating tool (76.1) to prevent the material to be laminated at the first laminating station (46.1) from adhering to the first laminating tool (76.1), and from there, guide the liner web (100) over a second laminating tool (76.2) to prevent the material to be laminated at the second laminating station (46.2) from adhering to the second laminating tool (76.2).

[0150] In the illustrated embodiment of the electrode strand providing device (24), a monocell strand is provided as an electrode strand (88), and first, a halfcell strand (32) is formed in a halfcell strand providing device (28) comprising a first separator web (34.1) and a first electrode segment (36.1) laminated thereon. The halfcell strand (32) is guided to a second laminating station (46.2) so that a second electrode segment (36.2) can be directly positioned thereon and laminated together with a second separator web (34.2). The electrode strand (88) formed as a monocell strand from the second laminating station (46.2) is guided to an individualization device (90) for individualizing a monocell (86). In the stacking device (26), a battery cell stack (22) is manufactured as a monocell (86).

[0151] According to the preferred configuration of the embodiments shown in the drawings, the structures of the first and second electrode material providing devices (92.1, 92.2) are substantially identical, so the electrode material providing devices (92.1, 92.2) are described together below.

[0152] The electrode material providing device (92.1, 92.2) each includes an electrode substrate providing device (38.1, 38.2), a conveying system (40.1, 40.2), and a cutting device (42.1, 42.2).

[0153] The electrode substrate providing device (38.1, 38.2) is designed to provide web-shaped electrode substrates (50.1, 50.2). For example, the electrode substrate providing device (38.1, 38.2) comprises a roll holder for a storage roll (52) having each web-shaped electrode substrate (50.1, 50.2) and at least one drive motor (58, M) configured to adjust web tension. Additionally, a measuring roller (108) is optionally provided, through which the web-shaped electrode substrate (50.1, 50.2) is guided, and the roller detects the unwinding length and / or unwinding speed of the web-shaped electrode substrate (50.1, 50.2) being unwound and provides, and transmits the information to the control unit (48). Data regarding the supply of the web-shaped electrode substrate (50.1, 50.2) may additionally or alternatively be determined through the position of a dancer (not shown).

[0154] Additionally, in the illustrated embodiments, the electrode substrate providing device (38.1, 38.2) also includes an additional driving device (58) for driving the movement of an alignment member (56), for example, a roll and, in some cases, a web-shaped electrode substrate (50.1, 50.2).

[0155] The transport system (40.1, 40.2) is equipped with transport units (62) that can move individually along a circulating guide rail (60). The movement of the individual transport units (62) can be individually controlled by a control unit (48). The transport system (40.1, 40.2) is configured to receive a web-shaped electrode substrate (50.1, 50.2) provided by an electrode substrate providing device (38.1, 38.2) and to move it flat along a cutting plane (64).

[0156] For example, since the guide rail (60) has a straight section after the receiving point (66), the surfaces of the workpiece carrier of the transport unit (62) move along the cutting plane (64), and the electrode substrate (50.1, 50.2) is placed on the surface and fixed therein, for example by a vacuum or a gripper (not shown). Reference numeral “65” indicates an electrode fixing area therein, where the electrode substrate (50.1, 50.2) and the electrode segments separated therefrom are fixed to the transport unit (62).

[0157] In some embodiments, a workpiece carrier mounted on a transport unit (62) is connected to a vacuum source (not shown) in the region of an electrode fixing portion (65) so that electrode segments (36.1, 36.2) can be fixed to the transport unit (62) in this region. In a preferred embodiment, each transport unit (62) is equipped with a vacuum pump (not shown) for generating a vacuum, and said vacuum pump can be individually controlled, for example, via a control unit (48). In another embodiment (not shown), a gripper that can be individually controlled is provided on the transport unit (62).

[0158] As mentioned above, the movement of the transport units (62) can be controlled individually. In some embodiments, the transport system (40.1, 40.2) is provided with means implemented in software for positioning the electrode segments (36.1, 36.2) relative to each other, specifically within the control unit (48), by adjusting the spacing between the cut electrode segments (36.1, 36.2) through the relative movement of the transport units (62).

[0159] The cutting device (42.1, 42.2) is designed to cut the electrode substrate (50.1, 50.2) along a cutting contour that extends in one or two dimensions from the cutting plane (64).

[0160] Each separator web providing device (44.1, 44.2) is configured to provide a separator web (34.1, 34.2). Similar to the electrode substrate providing device (38.1, 38.2), it may be provided with, for example, a storage roll (52) having the separator web (34.1, 34.2), at least one driving device (58) configured to adjust the web tension, and optionally one or more measuring rollers (108) or other measuring sensors for detecting, for example, the position of a dancer, and the signals thereof are likewise transmitted to the control unit (48). Additionally, an alignment member (56) for lateral web control may be provided.

[0161] The first laminating station (46.1) is configured to position and secure the first electrode segment (36.1), supplied by the first transport system (40.1), onto the first separator web (34.1, 34.2) to form a half-cell strand (32).

[0162] In the illustrated embodiment, the second laminating station (46.2) is configured and designed to directly attach and fix the second electrode segment (36.2), which is positioned relative to each other and supplied to the second electrode material supply device (92.2) by the (second) transport system (40.2), to the first electrode strand (32) together with the second separator web (34.2).

[0163] In some embodiments, the first and second laminating stations (46.1, 46.2) each include a heating device (68) for heating the electrode segments (36.1, 36.2) as intended. In some embodiments, the first and second laminating stations (46.1, 46.2) each include a transport device (70) for transporting and lifting the electrode segments (36.1, 36.2) positioned relative to each other from the transport unit (62) to the laminating point (72).

[0164] In the illustrated embodiment, a vacuum heating roller (74) is provided as a conveying device (70) equipped with a heating device (68), the surface of the roller can be heated as intended through a built-in heater, and an adsorption port for adsorbing electrode segments (36.1, 36.2) is provided. Alternatively, a temperature-controlled roller or an external temperature-controlled vacuum roller may be provided.

[0165] As a laminating tool (76.1, 76.2), the first and second laminating stations (46.1, 46.2) each preferably include an uncoated laminating roller, said laminating roller is pressed against a conveying device (70), in particular a vacuum heating roller (74), by the pressing force (F) of a pressing device (78). Thus, in the first laminating station (46.1), a first electrode segment (36.1) is laminated onto a first separator web (34.1) provided by a first separator web providing device (44.1), and in the second laminating station (46.2), a second electrode segment (36.2) is laminated onto a half-cell strand (32) provided by a half-cell strand providing device (28) together with the second separator web (34.2).

[0166] In the illustrated embodiment, an anode strand is provided as a half-cell strand (32), and the anode strand has an anode (A) as a first electrode segment (36.1). Thus, as a first lamination step a), anode lamination is performed at a first laminating station (46.1), in which the anode segments are laminated onto the first separator. At a second laminating station (46.2), a cathode (K) as a second separator and a second electrode segment (36.2) is laminated onto the anode strand. A liner web (100) is inserted between the first separator and the laminating tool (76.1, 76.2), respectively, for lamination.

[0167] Hereinafter, an exemplary structure of a liner handling device (94) according to a first embodiment is described based on the drawings of FIGS. 2, FIGS. 5, and FIGS. 6. FIGS. 2 schematically illustrates a liner handling device (94) as a detailed view of Detail II of FIGS. 1. FIGS. 5 schematically illustrates a possible structure of a liner web guide (96) of the liner handling device (94) before entering the first laminating station (46.1). FIGS. 6 illustrates a highly simplified schematic diagram of an embodiment of a liner handling device (94) having an infinite guide (145).

[0168] As illustrated in FIG. 2, some embodiments of the liner handling device (94) include a storage roll (122), a unwinding unit (110, 120) for unwinding a liner web (100) from a deflection roller (124) and a guide roller (126), and a winding unit (110, 128) for winding the liner web (100) after the last laminating station.

[0169] In some embodiments, the liner handling device (94) is equipped with a unit (130) for controlling the web speed of the liner web (100). For example, for this purpose, at least one electric drive roller (132) is provided in the liner web guide (96), and the drive device (M) of the drive roller is controlled by a control unit (48).

[0170] In some embodiments, the liner handling device (94) is equipped with a web tension adjustment unit (134) for adjusting the web tension of the liner web (100) when supplied to the first and / or second laminating station (46.1, 46.2). For example, to this end, the liner web guide (96) is provided with at least one dancer unit (136) that can adjust the web tension by being controlled by a control unit (48). In some embodiments not illustrated in detail herein, such a dancer unit (136) is also provided in front of the second laminating station (46.1). In some embodiments, the web tension may be adjusted through appropriate control of a drive roller (132). This may also be correspondingly provided in front of the second laminating station (46.2).

[0171] In some embodiments, the liner handling device (94) is provided with a web side guide (138) for adjusting the lateral alignment of the liner web (100) when supplied to the first and / or second laminating station (46.1, 46.2). For this purpose, for example, a guide roller (126) located in front of the laminating station (46.1, 46.2) may be designed to be axially movable and / or a rotating frame (140) capable of adjusting the lateral alignment may be used. This is also controlled by the control unit (48).

[0172] Through the liner web guide (96), the position of the liner web (100) can also be adjusted in its direction of movement as needed.

[0173] In some embodiments, the liner handling device (94) further comprises at least one connecting station (142), for example as part of a liner web guide (96), said connecting station is configured to connect the end of a previous liner segment to the beginning of a next liner segment to obtain a continuous liner web (100) from a plurality of liner segments. This allows a transition from an empty storage roll (122) to a next full storage roll to be performed. For example, a splicer table is provided for this purpose. Generally, a splicer and / or cutting device (144) may be provided.

[0174] In the embodiments illustrated in FIGS. 1 to 5, the liner handling device (94) is equipped with an unwinding unit (120) and a winding unit (128). However, in some embodiments illustrated in FIG. 6, the liner handling device (94) is otherwise equipped with an infinite guide (145), said guide is configured to guide the liner web (100) as an infinite web from the last laminating station, here, for example, the second laminating station (46.1) back to the first laminating station (46.2).

[0175] The operation of the liner handling device (94) is controlled by a control unit implemented specifically by a computer, and in some embodiments, said control unit is formed as part of the control unit (48).

[0176] The control unit (48) includes a processor (79) and a memory (81) in which a computer program is stored, and the program includes corresponding commands that cause the units of the electrode strand providing device (24) and the battery manufacturing facility (20) to perform the electrode strand providing method and the method for manufacturing a battery cell stack. In this process, the liner handling device (94) is appropriately controlled.

[0177] A specific preferred configuration of a method for manufacturing a battery cell stack (22) is shown in FIGS. 1 and FIGS. 3. The following process steps are illustrated:

[0178] 1. Supplying electrodes and separators as web materials for the cutting and lamination processes

[0179] 2. Mounting of a web on a transport system equipped with a flexible, movable carrier for individualized electrodes

[0180] 3 Individualization of electrode webs for anode and cathode

[0181] 4. Selective cleaning of electrodes

[0182] 5. Electrode transfer via vacuum roller

[0183] 6 For example, to provide a half-cell such as a SAS package, one electrode may be optionally omitted if necessary.

[0184] 7 Electrode heating

[0185] 8. Selective cleaning of electrodes

[0186] 9. First lamination step (example of step a); laminating half-cells to form a first half-cell strand

[0187] 11. Second lamination step (example of step b); for example, laminating the second electrode and, if necessary, the second separator web onto the first half-cell strand to form an electrode strand in the form of a monocell strand.

[0188] 12 Individualization of Monocells

[0189] 13. Monocell transfer via conveyor belt for additional processing

[0190] 14. Stack monocells to form a battery cell stack.

[0191] The symbols used in the drawing are as follows:

[0192] 106 Laser Cutting

[0193] 108 measuring rollers

[0194] 110 Unwind / Wind Sacrifice Film (=Winding Unit / Unwinding Unit)

[0195] 144 Splicer / Cutting Device

[0196] U-lamination delivery

[0197] R cleaning

[0198] Ve individualization

[0199] C test

[0200] M drive unit

[0201] Au alignment

[0202] P electrode discharge

[0203] H heater

[0204] V vacuum

[0205] S separator

[0206] K cathode (n-substrate)

[0207] A anode (n-substrate)

[0208] L lamination drum

[0209] In process step 6, a gap is created within the electrode strand (88) by omitting one cathode segment when transferring to the vacuum heating roller (74) of the positioning- and laminating device (30) to provide a SAS package [an example of a final cell of the battery stack (22)]. The gap created within the composite strand can then be used to provide a half-cell of the SAS format (anode contained in two separators).

[0210] FIGS. 1 and 2 illustrate an embodiment—variation 1—in which a liner web (100) is guided in a separate liner guide (146) between laminating stations (46.1, 46.2). To this end, the liner handling device (94) is equipped with a separation unit (148) for separating the liner web (100) from a first electrode strand (32) coming out of the first laminating station (46.1). Such a separation unit (148) is also provided in the second and all subsequent laminating stations (46.1).

[0211] FIGS. 3 and 4 illustrate an embodiment—Variation 2—in which the liner web (100) is not guided by a separate liner guide (146) between the laminating stations (46.1, 46.2), but is guided together with the half-cell strand (32). Accordingly, this variation of the liner handling device (94) includes an electrode strand- and liner web guide (150) for guiding the first electrode strand (32) formed at the first laminating station (46.1) together with the liner web (100) to the second laminating station (46.2). In this variation as well, a separation unit (148) is provided after the last laminating station (46.2).

[0212] The system proposed herein for manufacturing a battery cell using a liner according to an embodiment of the present invention consists of a plurality of units. An exemplary process flow within an individual unit is described in detail below.

[0213] In the area of ​​anode lamination—the first laminating station (46.1)—the first electrode (A, 36.1) is laminated and attached to the separator (34.1) at a specified interval. To this end, a laminating roller is mounted as an example of a laminating tool (76), and the laminating roller applies the necessary back pressure. The laminating roller may be heated. In order to protect the laminating roller from deposits of the separator (34.1) and to prevent the separator (34.1) from adhering to the laminating roller, a liner (100) is introduced into the process in this part of the process.

[0214] After laminating the electrode (36.1) to the separator (34.1) to create the first half-cell, the liner (100) can optionally be separated again from the half-cell web - half-cell strand (32) - (see Variation 1 shown in FIG. 2). To do this, the liner (100) is guided through a deflection roller (152) of very small diameter or a sharp edge to separate the liner (100) from the half-cell web - half-cell strand (32). In Variation 1 shown in FIG. 2, the half-cell web (32) continues to move in a straight line, while the liner (100) is deflected. By guiding the liner (100) and the half-cell web (32) separately from each other, the web tension for the two materials can be controlled separately. This is particularly desirable when the liner (100) has a different elasticity than the half-cell web (32) [but requires more assembly space and more individual components than Variation Example 2, e.g., deflection rollers (124) and / or tension rollers / dancers (136) for adjusting the web tension of the liner (100)]. Although different materials may have different elasticities, the web tension must be adjusted so that the elasticity due to web tension is the same for both materials (liner and separator). In this case, a dancer (136) may be used to compensate for smaller fluctuations.

[0215] In Variation 1, where the half-cell web (32) and the liner (100) are separated from each other, the liner (100) is guided through the web guide - liner guide (146) - to the laminating point (72) - second laminating station (46.2) of the monocell (88) on the first half-cell (32) [in this case, the position of the web guide depends on the position of the liner (L), more precisely, the position of the separator].

[0216] In the illustrated example, at the second laminating station (46.2) which serves as the laminating point (72) of the monocell (88), the liner (100) is fed into the lamination process along with the first half-cell web (32), the second separator (34.2), and the cathode sheet (K, 36.2), and is separated again from the monocell web—monocell strand, electrode strand (88)—to create the monocell (88) after lamination. To do this, the liner (100) may be guided, for example, through an additional deflection roller (152) of very small diameter or a sharp edge to separate the liner (100) from the monocell web—monocell strand, electrode strand (88).

[0217] In the case of Variant Example 2 illustrated in FIG. 4, the liner (100) passes through the apparatus (20) after the first lamination step a), where, for example, to the next lamination step b), where, for example, to the lamination step for creating a monocell, without being peeled off from the half-cell web to create a first electrode strand (32) - a half-cell web, a half-cell strand - together with the half-cell web (32). In this joint guide (150) of the liner (100) and the half-cell web (32), the liner (100) and the half-cell web (32) can be controlled only with the same web tension. If a difference in elasticity between the liner (100) and the half-cell web (32) occurs, it may be compensated for as needed before the next lamination step in this variant to prevent the formation of wrinkles in the liner (100) and / or the half-cell web (32), particularly the separator (34.1). This means that if the liner (100) attempts to contract more strongly than the separator (34.1) during cooling, a higher web tension than actually intended can be applied to the separator (34.1) to prevent wrinkles from forming on the separator (34.1) [by attachment to the liner (100)]. Conversely, that is, if the separator (34.1) attempts to contract more strongly than the liner (100), the separator (34.1) cannot contract as strongly as desired by being attached to the liner (100). However, the joint guide (150) of the liner (100) and the half-cell web (32) can reduce assembly space [no assembly space is required for the separate guide (146) of the liner (100)] and reduce the components required to guide the liner (100) and the half-cell web (32) through the facility.

[0218] After lamination of the half-cell web (32), the second separator web (34.2), and the second electrode (K, 36.2) to form the monocell web - monocell strand, electrode strand (88), the liner (100) is separated from the monocell web (88). To do this, the liner (100) is guided through a deflection roller (152) of very small diameter or a sharp edge so that the liner (100) can be separated from the monocell web (88). In this variation, the monocell strip (88) continues to move in a straight line, while the liner (100) is deflected.

[0219] The idea of ​​using the same liner in multiple laminating stations (46.1, 46.2) to provide electrode strands obtainable through a lamination process by laminating electrode materials onto a separator is also applicable to the embodiments described and illustrated in references [1] and [2]. Consequently, an additional configuration of the present invention is provided with a liner handling device (94) described herein in various variations to the apparatus and facilities specified in [1] and [2], so that the same liner (100) can be used in the first laminating station (46.1), the second laminating station (46.2), and additional laminating stations. For example, the electrode strand providing device (24) is equipped with a first electrode strand providing section, which is designed in the same way as the half-cell strand providing device (28) having a first laminating station (46.1), and provides an anode strand as the first electrode strand - the first half-cell strand (32). Additionally, the electrode strand providing device (24) includes a second electrode strand providing section configured in the same way as the half-cell strand providing device (28), which has a second laminating station (46.2), and a cathode strand is provided as the second electrode strand by this laminating station. Then, the two half-cell strands are laminated together to form a monocell strand (88) (composite strand). In this case, the liner is also guided between the second and third laminating stations in the same manner as the various variations described above for the path between the first and second laminating stations (46.1, 46.2).

[0220] Therefore, if additional laminating points are optionally required (see [1] and [2]), the above steps may be repeated for additional lamination steps.

[0221] In some embodiments, the liner (100) is finally wound after the last lamination step performed.

[0222] As illustrated in FIG. 6, in both Variation 1 and Variation 2, the use of a so-called infinite guide (145) in the liner (100) may also be considered. In this case, after the creation of the monocell web—monocell strand (88)—the liner (100) is lifted from the monocell web through a deflection roller (152) or a sharp edge, and then two or more deflection—and / or guide rollers (124, 126) and a dancer system (136) [to compensate for length difference or thermal expansion during “web production” (= manufacturing of a material used as a continuous web in a wound state)] can be returned to the starting point.

[0223] To reduce the complexity and cost of cell manufacturing in a high-quality continuous process, a method for providing an electrode strand is proposed, comprising at least one electrode strand (32, 88) including at least one separator web (34.1, 34.2) and at least one electrode material (50.1, 50.2, 36.1, 36.2) fixed thereto, and the method comprises the following:

[0224] a) A step of laminating a first electrode material (50.1, 36.1) to a first separator web (34.1) at a first laminating station (46.1) using a first laminating tool (76.1) to prevent the material to be laminated from adhering to the first laminating tool (76.1).

[0225] b) a step of laminating the second electrode material (50.2, 36.2) to the second separator web (34.1, 34.2) at the second laminating station (46.2) using the second laminating tool (76.2) to prevent the material to be laminated from adhering to the second laminating tool (76.2), wherein the same separator web (100) is used in steps a) and b). Explanation of the symbols

[0227] 1: Supply electrodes and separators as wound materials (bahn) to the cutting and laminating processes 2: Mounting a bay on a transfer system equipped with a flexible carrier for individualized electrodes 3: Individualization of cathode and anode electrode sheets 4: Selective Electrode Cleaning 5: Guide electrode with vacuum roller 6: Half-cells (e.g., SAS packages) can be provided by optionally omitting one electrode as needed. 7: Electrode heating 8: Selective Electrode Cleaning 9: First laminating step (Example of step a; laminating the half-cell into the first half-cell strand) 11: Second laminating step (example of step b; e.g., forming a monocell strand by laminating a second electrode and, if necessary, a second separator layer onto a first half-cell strand) 12: Individualization of the Monocell 13: Deliver the monocell to the conveyor belt for the subsequent process 14: Forming a battery cell stack by stacking monocells 20: Battery Manufacturing Equipment 22: Battery Cell Stack 24: Electrode strand providing device (consisting of a providing device for providing a monocell strand (e.g., a composite of electrode strands) 26: Stacking device 28: Half-cell strand providing device (Example of a first electrode strand providing device) 32: First half-cell strand (Example of the first electrode strand) 34.1: First membrane layer 34.2: Second separator layer 36.1: First electrode segment 36.2: Second electrode segment 38.1: First electrode substrate providing device 38.2: Second electrode substrate providing device 40.1: First transfer system 40.2: Second transfer system 42.1: First cutting device 42.2: Second cutting device 44.1: First separator layer providing device 44.2: Second separator layer providing device 46.1: 1st Laminating Station 46.2: 2nd Laminating Station 48: Control unit 50.1: First wound electrode substrate 50.2: First wound electrode substrate 52: Supply Roll 56: Alignment element 58: Drive unit 60: Guide rail 62: Transfer unit 64: Cutting plane 65: Electrode fixing device 66: Storage point 68: Heating device 70: Transfer device 72: Laminating point 74: Vacuum heating roller 76.1: First laminating tool (e.g., first laminating roller or first laminating drum) 76.2: Second laminating tool (e.g., second laminating roller or second laminating drum) 78: Pressurizing device 79: Processor 81: Memory 82: Individualization Point 86: Monocell 88: Monocell Strand (Example of an electrode strand) 90: Individualization device 92.1: First electrode active material supply device 92.2: Second electrode active material supply device 94: Liner handling device 96: Liner Layer Guide 100: Liner layer 106: Laser cutting 108: Measuring roller 110: Sacrifice film unwinding / winding (=winding unit / unwinding unit) 118: Stack formation 120: Release Unit 122: Supply Roll 124: Deflection roller (liner) 126: Guide roller (liner) 128: Winding Unit 130: Floor speed control unit 132: Drive roller 134: Layer Tension Unit 136: Dancer Unit 138: Floor Side Guide 140: Rotating frame 142: Connection Station 144: Splice / Cutting Device 145: Infinite Guide 146: Liner Guide 148: Separation unit (for separating the liner layer from the electrode strand after lamination) 150: Electrode Strand and Liner Layer Guide 152: Deflection roller of the separation unit U: Lamination India R: Cleaning Ve: Individualization C: Exam M: Drive unit Au: Alignment P: Electrode discharge H: Heating V: Vacuum S: Separator K: Anode material A cathode substrate

Claims

Claim 1 A method for providing an electrode strand for providing at least one electrode strand (32, 88), wherein the electrode strand has at least one separator web (34.1, 34.2) and at least one electrode material (50.1, 50.2, 36.1, 36.2) fixed thereto, the method comprising: a) a step of laminating a first electrode material (50.1, 36.1) to a first separator web (34.1) at a first laminating station (46.1) using a first laminating tool (76.1) while inserting a liner web (100) to prevent the material to be laminated from adhering to a first laminating tool (76.1); and b) a step of laminating a first electrode material (50.1, 36.1) to a first separator web (34.1) at a first laminating station (46.1) while inserting a liner web (100) to prevent the material to be laminated from adhering to a second laminating tool (76.2). A method for providing an electrode strand, comprising the step of laminating a second electrode material (50.2, 36.2) to a second separator web (34.1, 34.2) at a second laminating station (46.2) using a second laminating tool (76.2), wherein the same separator web (100) is used in steps a) and b). Claim 2 A method for providing an electrode strand according to claim 1, comprising the step of c) guiding a continuous liner web (100) from a first laminating station to a second laminating station. Claim 3 A method for providing an electrode strand according to claim 2, wherein step c) comprises: c1) separating the liner (100) from the first electrode strand (32) obtained in step a) and guiding the liner (100) through a self-liner guide (146); and c2) guiding the liner (100) together with the first electrode strand (32) obtained in step a) to the second laminating station (46.1). Claim 4 In any one of claims 1 to 3, step a) comprises: a1) supplying the first separator web (34.1) to the first laminating station (46.1); a2) supplying a first electrode material in the form of individualized first electrode segments (36.1) positioned relative to each other to the first laminating station (46.2); a3) using at least one first temperature-controlled laminating roller as a first laminating tool (76.1); a4) unwinding the liner (100) from a liner storage roll (122); a5) supplying the liner web (100) between the first separator web (34.1) and the first laminating tool (76); a6) the liner so as to cover the first separator web (34.1) to be laminated in step a); a7) a step of aligning the web (100) laterally; a8) a step of adjusting the web tension of the liner web (100) when supplied to the first laminating station (46.1); a9) a step of adjusting the web speed of the liner web (100) to match the speed of the first separator web (34.1) supplied to the first laminating station (46.1); a10) a step of providing a first electrode strand (32) comprising the first separator web (34.1) and the first electrode material (50.1, 36.1) laminated thereon; a11) the first laminating through the liner web (100). A method for providing an electrode strand comprising at least one of the steps of: pressing a tool (76.1) onto the first separator web (34.1); a12) temperature-regulating the first laminating station (46.1) to heat the first separator web (34.1). Claim 5 In any one of claims 1 to 4, the step b) comprises: b1) supplying the first electrode strand (32) obtained in step a) to the second laminating station (46.2); b2) supplying the second separator web (34.2) to the second laminating station (46.2); b3) laminating the second electrode material (50.2, 36.2) and / or the second separator web (34.2) to the first electrode strand (32) obtained in step a); b4) supplying the second electrode material in the form of individualized second electrode segments (36.2) positioned relative to each other to the second laminating station (46.2); b5) using at least one second laminating roller as a second laminating tool (76.2); b6) in step b). a step of supplying the liner web (100) between the separator web (34.1, 34.2) to be laminated and the second laminating tool (76.2); b7) a step of laminating the second electrode material (50.2, 36.2) to the second separator web (34.2); b8) a step of providing a second electrode strand comprising the second separator web (34.2) and the second electrode material (50.2, 36.2) laminated thereon through lamination in step b); b9) a step of applying pressure and / or heat to the second laminating tool (76.2); b10) a step of aligning the liner web (100) laterally so as to cover the separator web (34.1, 34.2) to be laminated in step b). Step; b11) adjusting the web tension of the liner web (100) when supplied to the second laminating station (46.2); b12) adjusting the web speed of the liner web (100) to match the speed of the separator web (34.1, 34.2) to be laminated at the second laminating station; b13) individual second electrode segment (36) supplied to the second laminating station (46.2).A method for providing an electrode strand comprising at least one step of adjusting the position of the liner web (100) in a moving direction to match the position of 2): Claim 6 A method for providing an electrode strand according to any one of claims 1 to 5, comprising: d1) combining a first electrode strand (32) obtained particularly in step a) and a second electrode strand obtained particularly in step b) to form a composite strand (88); or d2) laminating an additional layer of a separator web and / or electrode material to the electrode strand obtained particularly in step a); d) performing a third lamination step at a third laminating station using a third laminating tool, wherein the same liner web (100) as in steps a) and b) is inserted between the third laminating tool and the material to be laminated. Claim 7 A method for providing an electrode strand according to any one of claims 1 to 6, comprising at least one of: e) providing the liner web (100) from a liner selected from the group comprising a sacrificial film, a plastic film, a PET film, a composite material web, and a plastic mixture web; f) winding the liner web (100) after a final laminating station (46.2); g) returning the liner web (100) to a first laminating station (46.1) after the final laminating station (46.2); h) guiding the liner web (100) within an infinite guide (145) or an infinite loop; i) guiding the liner web (100) through a deflection roller (124, 152), a guide roller (126), and / or a dancer system (136). Claim 8 A battery cell manufacturing method for manufacturing a monocell (86) or a halfcell for a battery, comprising the steps of: providing at least one electrode strand (32, 88) using an electrode strand providing method according to any one of claims 1 to 7; and individualizing the monocell (86) or halfcell from the at least one electrode strand (32, 88). Claim 9 A battery cell stack manufacturing method for manufacturing a battery cell stack (22), comprising the steps of performing the battery cell manufacturing method according to claim 8 and stacking the battery cells (86) manufactured thereby to form a single cell stack (22). Claim 10 In an electrode strand providing device (24) for a battery manufacturing facility (20), the electrode strand providing device (24) is configured to provide at least one electrode strand (32, 88) comprising at least one separator web (34.1, 34.2) and at least one electrode material (50.1, 36.1, 50.2, 36.2) fixed thereto, and comprises: a separator web providing device (44.1, 44.2) for providing one or more separator webs (34.1, 34.2); an electrode material providing device (92.1, 92.2) for providing a first electrode material (50.1, 36.1) and / or a second electrode material (50.2, 36.2); and a first laminating device for laminating the electrode material (50.1, 36.1) and the separator web (34.1). A first laminating station (46.1) equipped with a tool (76.1); a second laminating station (46.2) equipped with a second laminating tool (76.2) for laminating electrode material (50.2, 36.2) and separator web (34.2); and a liner handling device (94) for handling a liner (100), wherein the liner handling device guides the liner web (100) over the first laminating tool (76.1) to prevent the material to be laminated at the first laminating station (46.1) from adhering to the first laminating tool (76.1), and guides it from there over the second laminating tool (76.2) so that the material to be laminated at the second laminating station (46.2) is not adhering to the second laminating tool (76.2). An electrode strand providing device configured to prevent attachment to a tool (76.2). Claim 11 In claim 10, the liner handling device (94) comprises: 11.1) a release unit (120) for releasing the liner web (100) from a storage roll (122); 11.2) a web tension adjustment unit (134) for adjusting the web tension of the liner web (100) when supplied to a first and / or second laminating station (46.1, 46.2); 11.3) a web side guide (138) for adjusting the lateral alignment of the liner web (100) when supplied to the first and / or second laminating station (46.1, 46.2); 11.4) a deflection roller (124, 152), a guide roller (126), and / or at least one dancer unit (136); 11.5) a winding unit for winding the liner web (100) after the last laminating station. A device for providing electrode strands, comprising at least one of the following: a unit (128) 11.6) at least one connecting station (142) configured to connect the end of a previous liner segment and the beginning of a next liner segment to obtain a continuous liner web (100) from a plurality of liner segments; 11.7) an infinite guide (145) configured to guide the liner web (100) as an infinite web from the last laminating station back to the first laminating station (46.1); 11.8) a unit for controlling the web speed of the liner web; and 11.9) a control unit particularly implemented by a computer. Claim 12 An electrode strand providing device according to claim 10 or 11, wherein the liner handling device (94) comprises a separation unit (148) for separating the liner web (100) from the first electrode strand (32) coming out of the first laminating station (46.1) and a self-liner guide (146) between the first and second laminating stations (46.1, 46.2), and the liner guide is configured to guide the liner web (100) from the first laminating station (46.1) to the second laminating station (46.2). Claim 13 An electrode strand providing device according to claim 10 or 11, comprising an electrode strand- and liner web guide (150) for guiding a first electrode strand (32) formed at the first laminating station (46.1) together with the liner web (100) to the second laminating station (46.2). Claim 14 A battery manufacturing facility (20), comprising one or more electrode strand providing devices (24) according to any one of claims 10 to 13 and a personalization device (90) for personalizing a battery cell (86) from one or more electrode strands (32, 88) provided through the same. Claim 15 An electrode strand providing device (24) according to any one of claims 10 to 13 or a battery manufacturing facility (20) according to claim 14, wherein the device (24) or the facility (20) is configured to perform a method according to any one of claims 1 to 9, the electrode strand providing device or battery manufacturing facility.

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