Method and processing device for producing storage cell for electrical energy store, in particular of motor vehicle, and use of processing device

Abstract

The invention relates to a method for producing a storage cell for an electrical energy store, in which method an electrode roll (1) is provided which has an electrode film (3). According to the invention, a processing device (2) is provided, which has a base (7) that can be rotated about a base rotation axis (8) and processing elements (9) that can be rotated about an element rotation axis (10) in each case relative to the base (7) and that engage into a respective arcuate guide (11) of the base (7) that is associated with the respective processing element (9). The base (2) is rotated about a base rotation axis (8) with respect to the electrode roll (1), with respect to the element rotation axis (10) and with respect to the processing element (9) such that a respective pivoting movement of the processing element (9) about the element rotation axis (10) with respect to the electrode roll (1), with respect to the base (2) and in the direction of the base rotation axis (8) is caused by means of the guide (11).

Description

Technical Field

[0001] The invention relates to a method and a processing device for producing storage cells for electrical energy storage devices, in particular for motor vehicles. The invention also relates to the use of such a processing device. Background Art

[0002] DE102012208726B4 is known as a method for producing a separator for use in an electrochemical cell of a lithium-ion battery. EP2684235B1 discloses an energy storage device with a plurality of storage cells. In addition, WO2017 / 129323A1 discloses a film structure for a battery, which is used for distribution on a round body.

[0003] Furthermore, DE 10 2021 001 982 A1 discloses a single-body connector for connecting at least two output bodies and / or wire strands to one another. Summary of the invention

[0004] The object of the present invention is to provide a method, a processing device and a use of such a processing device, which allow storage cells for electrical energy accumulators, in particular for motor vehicles, to be produced in a particularly time-efficient and cost-effective manner and in a particularly process-reliable manner.

[0005] This object is achieved according to the invention by a method having the features of claim 1, a processing device having the features of claim 9 and a use having the features of claim 10. Advantageous embodiments of the invention are the subject of the dependent claims.

[0006] A first aspect of the invention relates to a method for producing a storage cell (also referred to as a cell for short) for an electrical energy accumulator, in particular an electrical energy accumulator for a motor vehicle. With the aid of the storage cell, electrical energy can be stored, in particular electrochemically, in particular in the fully manufactured state of the storage cell. The electrical energy accumulator has the storage cell and a plurality of further storage cells in its fully manufactured state, wherein the above and below descriptions of the storage cell can also be transferred to other further storage cells without any problem, and vice versa. In the finished state of the electrical energy accumulator, for example, the storage cells of the electrical energy accumulator are electrically connected to one another, so that electrical energy can be stored, in particular electrochemically, with the aid of the electrical energy accumulator. The electrical energy accumulator is preferably a high-voltage component, whose voltage, in particular the operating voltage or the rated voltage, is preferably greater than 50 volts, in particular greater than 60 volts, and is most preferably several hundred volts. For example, the electrical energy accumulator is used as a so-called traction accumulator. This means that in the fully manufactured state of the motor vehicle equipped with the electrical energy accumulator, the motor vehicle has at least one electric machine by means of which the motor vehicle can be driven - in particular purely - electrically. In order to drive the motor vehicle by means of the electric machine, the electric machine is supplied with electrical energy stored in the electrical energy accumulator. The electric machine is preferably a high-voltage component, whose voltage, in particular operating voltage or rated voltage, is preferably greater than 50 volts, particularly preferably greater than 60 volts, and most preferably several hundred volts.

[0007] In the method for manufacturing a storage cell according to the invention, an electrode roll is provided. The electrode roll has at least one electrode film, which is also referred to as a first electrode film. The electrode film is wound into an electrode roll, for example, around an imaginary winding axis. In particular, for example, the electrode roll has a further second electrode film, which is wound into an electrode roll, in particular around an imaginary winding axis, so that each electrode film is wound into an electrode roll, in particular around an imaginary winding axis, for example. In particular, the electrode roll has, for example, a separator arranged between the electrode films, which is wound into an electrode roll, in particular together with the electrode film, in particular around an imaginary winding axis, for example. The electrode roll is also referred to as a jam roll. In the fully manufactured state of the storage cell, the first electrode film is, for example, or forms a first electrical pole of the storage cell, wherein the first electrical pole has a first electrical polarity. For example, in the fully manufactured state of the storage cell, the second electrode film forms a second electrical pole of the storage cell, wherein the second electrical pole has a second electrical polarity different from the first electrical polarity. If an electrode film is mentioned above and below, this is to be understood as the first electrode film unless otherwise stated. The above and below descriptions of the electrode film, and therefore the first electrode film, can also be easily transferred to the second electrode film and vice versa.

[0008] For example, the electrode film is or forms an electrode of the storage cell, so that, for example, in the fully manufactured state of the storage cell, the electrode film is the mentioned electrode, forms the mentioned electrode, or is a component of the electrode. Thus, for example, in the method according to the invention, the mentioned electrode of the storage cell is produced from the electrode film. For example, the electrode film is an anode film, so that the mentioned electrode is the anode of the storage cell, and so that, for example, the electrical pole of the storage cell formed by the electrode film is the electrical negative pole of the storage cell. It is also conceivable that the electrode film is a cathode film, so that the electrode is the cathode of the storage cell. Thus, the electrical pole of the storage cell formed by the electrode film is the electrical positive pole of the storage cell. With the help of the electrode and therefore with the help of the electrode film, electrical energy can be stored, in particular electrochemically stored in the storage cell. In addition, the electrical energy stored in the storage cell can be provided by the storage cell with the help of the electrode and thus, for example, transmitted to a component arranged in addition to the storage cell, so that the component can be powered with the electrical energy stored in the storage cell. For example, the component is the mentioned motor. For example, in this method, a cell housing, also referred to as housing for short, of a storage cell is provided, wherein an electrode coil can be arranged in the housing.

[0009] In order to be able to manufacture storage cells in a timely, cost-effective and process-reliable manner, a processing device is provided in the method according to the invention. The processing device, also referred to as the device, has a base that can rotate around a base rotation axis, which is also called a base element. For example, the base is configured as a disk, so that the base is also called a base disk. In addition, the processing device has a plurality of processing elements, which are also called sections or processing sections. The processing elements can rotate around corresponding element rotation axes relative to the base, respectively, and the element rotation axes extend parallel to the base rotation axis and are spaced apart from the base rotation axis. In other words, the corresponding processing elements can rotate or pivot relative to the base around their corresponding element rotation axes, which extend parallel to the base rotation axis and are spaced apart from the base rotation axis. Here, the element rotation axes are arranged spaced apart from each other, especially in the circumferential direction of the base extending around the base rotation axis. In particular, the element rotation axes are arranged on a common circle, the center point of which is preferably located on the base rotation axis. For example, the processing element is rotatable, especially pivotable, held at the basic device about the element rotation axis relative to the basic device, especially the processing device. It is particularly conceivable here that the base can rotate about the base rotation axis relative to the basic device and especially also relative to the element rotation axis.

[0010] The respective processing element is provided with a corresponding arc-shaped guide of the base. The base can be rotated about the base rotation axis relative to the element rotation axis and thus preferably also relative to the basic device. In particular, the guide is a guide slot, for example a guide slot designed as a groove or a through slot, wherein the respective processing element engages in the guide assigned to the respective processing element.

[0011] In the method, the base is rotated relative to the electrode coil and relative to the element rotation axis, and thus also relative to the basic device about the base rotation axis, so that a corresponding pivoting movement of the processing element about the element rotation axis relative to the electrode coil, relative to the base and, for example, also relative to the basic device and in the direction of the base rotation axis is caused by means of a guide. In other words, by rotating the base about the base rotation axis relative to the electrode coil and relative to the element rotation axis and preferably also relative to the basic device, the processing element engages in a corresponding associated guide, which causes the processing element engaged in the guide to perform the described corresponding pivoting movement, within the scope of which the corresponding processing element is pivoted about its corresponding element rotation axis in the direction of the base rotation axis. Thus, a forced guide is provided by the guide and by the engagement of the processing element in the guide, by which the processing element is pivoted about the element rotation axis relative to the base and also relative to the electrode coil in the direction of the base rotation axis when the base is rotated about the base rotation axis relative to the element rotation axis.

[0012] By means of the processing element, at least one subregion of the electrode film arranged on the end side of the electrode film is tilted, in particular bent, in particular about a tilting axis, in particular a bending axis, due to the pivoting movement caused by the processing element. For example, the subregion is tilted by means of the processing element due to the pivoting movement caused by the processing element in the direction of the rotation axis of the base. By means of the processing element and its pivoting movement, the subregion, in particular the entire subregion, can be tilted in a timely and precise manner, i.e., the corresponding parts of the subregion do not have to be tilted one after the other and / or by hand.

[0013] In a particularly advantageous embodiment of the present invention, the electrode film of the electrode roll wound into the electrode roll has a contact lug on its end side, which is also referred to as a lug or tongue and protrudes from the base of the electrode film, especially in the axial direction of the electrode roll. The axial direction of the electrode roll extends along the winding axis, wherein the axial direction of the electrode roll especially coincides with the winding axis. Here, the sub-region has a contact lug. In other words, the contact lug is a component of the sub-region of the electrode film, especially the part mentioned above. In other words, the contact lug is a region of the electrode film, wherein the regions are successively and separated from each other in the circumferential direction extending around the axial direction of the electrode roll, but the regions, therefore the contact lugs, are connected to or held at the base, and are thus connected to or held at each other via the base. In particular, the electrode film is spirally wound into the electrode roll, so that the electrode film extends along a spiral line on its end side, and the contact lug is arranged on this end side. The above-mentioned feature, namely that the contact lugs are separated from each other and at least partially follow each other in the circumferential direction of the electrode coil extending around the axial direction of the electrode coil and thus around the winding axis, should be understood in particular as follows: the contact lugs follow each other and are separated from each other along the spiral line, wherein the contact lugs are held on the base body and held on each other via the base body. It can be achieved that the respective contact lugs are turned over, especially bent, in particular around the respective turning or bending axis relative to the base body and in particular in the direction of the base body. Since the contact lugs are separated from each other in the circumferential direction of the electrode coil or along the spiral line, it is possible in principle, for example, to turn over, especially bend, in particular around the turning or bending axis of the one contact lug relative to the base body or relative to the other contact lugs, in particular in the direction of the base body. However, it is desirable here to turn over, in particular bend, the contact lugs or all the contact lugs, in particular simultaneously, relative to the base body, in order to thereby achieve, for example, a large-area, in particular electrical and / or mechanical attachment to a contact element that is constructed separately from the electrode film. It is preferably provided that the contact lug is tilted, in particular bent, by means of the processing element due to the pivoting movement of the processing element in the direction of the base body, in particular about a respective tilting axis, in particular a bending axis, of the respective contact lug. As a result, the contact lug or all contact lugs can be tilted, in particular bent, in particular simultaneously, relative to the base body and in particular in the direction of the base body in a timely, cost-effective and process-reliable manner.

[0014] For example, in the method, the electrode coil is moved relative to the processing device in such a way that at least a subregion, in particular a corresponding lug subregion of the contact lug, is moved into the active region of the processing element, after which the subregion, in particular at least the corresponding lug subregion of the contact lug is arranged in the active region. For example, the processing element is initially located outside the active region. By pivoting the processing element in the direction of the rotation axis of the base as described above, the processing element is moved into the active region, so that, for example, the processing element is at least indirectly, in particular directly, supported against a subregion of the electrode film, in particular a corresponding contact lug, and in particular, the subregion, in particular the contact lug, is tilted, in particular bent, when the processing element is further pivoted in the direction of the rotation axis of the base.

[0015] The present invention is based in particular on the following recognition and consideration: For the first sample parts and prototypes, the contact lugs are turned inwards by hand, although precisely but very laboriously, and thus in the direction of the base body. This is not suitable for the production of a large number of pieces with sufficient batch quality, because undesirable dirt can occur due to hand sweat, hand particles, etc. In addition, turning the contact lugs by hand is very time-consuming and cost-intensive. In contrast, the present invention now makes it possible to turn over, in particular bend, the contact lugs in the direction of the base body in a timely, cost-effective and process-reliable manner. For this purpose, the base is rotated, which thus performs a particularly space-saving rotational movement. By the described forced guidance, the processing element is pivoted in the direction of the base rotation axis and thus inwards due to the rotational movement of the base, so that the corresponding processing element performs its corresponding above-described pivoting movement. Due to the pivoting movement of the processing element, the contact lug is turned over, in particular bent, in the direction of the base body, in particular in the direction of the winding axis. The invention makes it possible to simultaneously and space-savingly and thus time-efficiently and cost-effectively and process-reliably tilt the contact lugs, wherein excessive soiling and other damages can be avoided.

[0016] For example, the contact lug can be rectangular or can have a shape different from a rectangle. For example, the contact lug can be configured to be trapezoidal.

[0017] In order to enable a particularly advantageous pivoting movement of the processing element by forced guidance and thus to subsequently be able to tilt the subregions, in particular the contact lugs, in a particularly advantageous manner, one embodiment of the invention provides that the corresponding guide is elliptical, ie in the form of an elliptical arc segment.

[0018] Another embodiment is characterized in that the base has a first toothing, in particular a first external toothing, into which a second toothing, in particular a second external toothing, of a gear (also called a pinion) engages. The gear rotates about a gear rotation axis extending parallel to the base rotation axis and parallel to the corresponding element rotation axis and spaced apart from the base rotation axis and the corresponding element rotation axis, thereby driving the base and thereby rotating the base about the base rotation axis. As a result, the base can be rotated in a particularly precise, timely and cost-effective manner, so that the contact lug can be tilted in a precise, timely and cost-effective manner.

[0019] In order to be able to manufacture the storage cell in a particularly time-efficient and cost-effective manner, it is provided in another embodiment of the present invention that the sub-region, in particular the contact lug, is mechanically and electrically connected to the above-mentioned contact element after the sub-region is turned over, in particular after the corresponding turning over of the contact lug, and the contact element is constructed in particular jointly with the contact lug, separately from the sub-region, in particular separately from the contact lug. The contact element can be, for example, a contact plate. The storage cell can advantageously be supplied with electrical energy via the contact element. The turning over of the sub-region, in particular the contact lug, enables a particularly large-area, mechanical and electrical attachment of the sub-region, in particular the contact lug, to the contact element, so that the storage cell can provide and store electrical energy itself in a particularly advantageous, in particular particularly effective and efficient manner.

[0020] In order to be able to attach a subregion, in particular a contact lug, to a contact element in a particularly time-efficient, cost-effective and particularly reliable manner, a further embodiment of the invention provides that the subregion, in particular the contact lug, is welded to the contact element and is thereby mechanically and electrically connected to the contact element.

[0021] In order to enable particularly time-efficient and cost-effective production, it is provided in a further embodiment of the invention that the contact lug is constructed in one piece with the base body and thus in one piece with each other. This means that the contact lug and the base body are formed from a single part, so that the contact lug and the base body are formed from a single block or are constructed as a single block. In other words, the contact lug and the base body do not consist of a plurality of elements that are constructed separately from one another and connected to one another, but rather the contact lug and the base body are formed by a one-piece, thus integrally constructed, one-piece body that is formed from a single part and is constructed, for example, as the above-mentioned integral block.

[0022] It has also been found to be particularly advantageous if the partial regions, in particular the contact lugs, consist of a metallic material, thereby making particularly time-efficient and cost-effective production possible.

[0023] Preferably, the partial region, in particular the contact lug, and the contact element consist of the same material, in particular a metallic material.

[0024] Finally, it has been found to be particularly advantageous to rotate the base about the base rotation axis by means of an electric motor, so that the base can be rotated particularly precisely, in a timely and cost-effective manner, and thus the storage cells can be produced in a timely and cost-effective manner.

[0025] A second aspect of the invention relates to a processing device for producing storage cells for electrical energy storage devices. Very preferably, the processing device according to the second aspect of the invention is used as the processing device of the first aspect of the invention. The processing device according to the second aspect of the invention has a base that can be rotated about a base rotation axis and a plurality of processing elements, the processing elements can be rotated relative to the base about a corresponding element rotation axis, the element rotation axis extends parallel to the base rotation axis and is spaced apart from the base rotation axis, and the processing elements are engaged in the corresponding arc-shaped guide of the base that can be rotated relative to the element rotation axis about the base rotation axis and is associated with the corresponding processing element, so that by the rotation of the base extending about the base rotation axis relative to the element rotation axis, the corresponding pivoting movement of the processing element relative to the base and in the direction of the base rotation axis can be caused by means of the guide. The advantages and advantageous designs of the first aspect of the invention can be regarded as the advantages and advantageous designs of the second aspect of the invention, and vice versa.

[0026] The processing device can be said to be designed in the manner of an iris diaphragm, since the processing element, like a section of the iris diaphragm, can be pivoted or swiveled relative to the base inwards, thus in the direction of the base axis of rotation, when the base is rotated about the base axis of rotation relative to the element axis of rotation. As a result, the contact lugs or all contact lugs can be bent simultaneously and thus in a timely and cost-effective manner and in a process-reliable manner.

[0027] A third aspect of the invention relates to the use of a processing device according to the second aspect of the invention, wherein the processing device is used to produce storage cells for an electrical energy accumulator, in particular an electrical energy accumulator for a motor vehicle. The advantages and advantageous configurations of the first and second aspects of the invention can be regarded as advantages and advantageous configurations of the third aspect of the invention, and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Further details of the present invention are obtained from the following description of preferred embodiments with the aid of the accompanying drawings. Here, it is shown:

[0029] Figure 1A schematic perspective view of an electrode coil for a storage cell of an electrical energy accumulator is shown, wherein the electrode coil is processed by means of a processing device in a method for producing a storage cell;

[0030] Figure 2 A schematic and perspective front view of a processing device is shown;

[0031] Figure 3 A schematic front view of a processing device is shown, wherein a processing element of the processing device is in an initial position;

[0032] Figure 4 Show according to Figure 3 A schematic rear view of a processing device;

[0033] Figure 5 A schematic front view of a processing device is shown, wherein the processing element is located in a respective first intermediate position;

[0034] Figure 6 Show according to Figure 5 A schematic rear view of a processing device;

[0035] Figure 7 A schematic front view of a processing device is shown, wherein the processing element is located in a respective second intermediate position;

[0036] Figure 8 Show according to Figure 7 A schematic rear view of a processing device;

[0037] Fig. 9 A schematic front view of a processing device is shown, wherein the processing element is located in a corresponding tilted position;

[0038] Fig.10 Show according to Fig. 9 A schematic rear view of a processing device; and

[0039] Fig.11 Schematic diagram showing unwinding of an electrode film of an electrode roll. DETAILED DESCRIPTION

[0040] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0041] A method for producing a storage cell for an electrical energy storage device for a motor vehicle is explained below with reference to the drawings. In this method, a storage cell is produced. Figure 1An electrode roll 1 of a storage cell is shown in a schematic perspective view. In particular, in the method, the electrode roll 1 is processed by means of a processing device 2. In the method, an electrode roll 1 is provided. The electrode roll 1 has a first electrode film, a second electrode film and a separator, wherein the electrode film and the separator are especially wound around an imaginary winding axis to form the electrode roll 1. For example, before the electrode film and the separator are wound into the electrode roll 1, the electrode film and the separator are first stacked one on top of another, especially stacked one on top of another along a stacking direction, especially stacked one on top of another so that the separator is arranged between the electrode films. As a result, the electrode film and the separator form a stack in which the separator is especially arranged between the electrode films when viewed along the stacking direction. The stack is especially wound around an imaginary winding axis to form the electrode roll 1.

[0042] One of the electrode films is shown in an exemplary manner in the unwinding perspective. Fig.11 , and is indicated by 3. The electrode film 3 can be the first electrode film or the second electrode film, so that the above and below descriptions of the electrode film 3 can be transferred not only to the first electrode film but also to the second electrode film, and vice versa. For example, the electrode film 3 can be a cathode film and thus is or forms an electrode of a storage cell configured as a cathode. It is also conceivable that the electrode film 3 is an anode film and thus is or forms an electrode of a storage cell configured as an anode. The electrode film 3 is preferably composed of a metal material, in particular copper or aluminum. In particular, Fig.11 The electrode film 3 is shown in a state in which it has not yet been wound into an electrode roll 1. It can be seen that the electrode film 3 has a base body 4 and contact lugs 5 protruding from the base body 4. The contact lugs 5 are preferably formed integrally with the base body 4 and thus with each other.

[0043] In particular, the imaginary winding axis Figure 1 In the figure, the electrode film and the separator are wound around the winding shaft to form the electrode roll 1. When the electrode film is wound into the electrode roll 1, the electrode film 3 has a contact lug 5 on its axial end side S1. Figure 1 It can be seen that the axial end side S1 of the electrode film 3 wound into the electrode roll 1 generally coincides with the first axial end side of the electrode roll 1. The electrode film 3 also has a second axial end side S2 when it is wound into the electrode roll 1, which is opposite to or away from the first axial end side S1 along the axial direction of the electrode roll 1 and thus along the winding axis 6. The second axial end side S2 of the electrode film 3 wound into the electrode roll 1 generally coincides with the second axial end side of the electrode roll 1, so that the axial end side of the electrode roll 1 and therefore the axial end side of the electrode film 3 along the axial direction of the electrode roll 1 (the axial direction of the electrode roll extends along the winding axis 6) diverge from each other. Here, the contact lug 5 protrudes from the base body 4 along the axial direction of the electrode roll 1. Figure 1 In the embodiment, the first axial end side S1 where the contact lug 5 is arranged faces away from Figure 1 It can be seen that the contact lug 5 is arranged in a subregion of the electrode foil 3 arranged on the end side S1 and is therefore a component of the subregion of the electrode foil 3 .

[0044] In the method, a processing device 2 is provided. The processing device 2 has a base 7, which is currently designed as a disk and is also referred to as a base disk, which can be rotated about a base rotation axis 8. Currently, the base rotation axis 8 coincides with the winding axis 6. Figures 2 to 10 As can be seen particularly well in FIG, the processing device 2 has a plurality of processing elements 9. The respective processing element 9 can be rotated about a respective element rotation axis 10 relative to the base 7 and also relative to the electrode coil 1. The respective element rotation axis 10 extends parallel to the base rotation axis 8 and is spaced apart from the base rotation axis 8. Furthermore, the element rotation axes 10 extending parallel to one another are spaced apart from one another.

[0045] from Figure 3 and Figure 4 As can be seen particularly well in FIG. 1 , the respective processing element 9 is provided with a respective guide 11 of the base 7, also referred to as the base element, wherein the respective processing element 9 engages in the respective guide 11 of the base 7 which is provided with the respective processing element 9. Figure 4 As can be seen in the drawings, for example, the respective processing element 9 has a respective projection 12, which projects from the respective base body 13 of the respective processing element 9, in particular along the extension direction. For example, the extension direction extends parallel to or obliquely to the respective element rotation axis 10. The respective guide 11 is designed as a through slot in the embodiment shown in the drawings. Here, the respective guide 11 is arc-shaped, in particular elliptical. In addition, the base 7 can be rotated about the base rotation axis 8 relative to the element rotation axis 10.

[0046] In the method, the base 7 is rotated relative to the electrode coil 1 and relative to the element rotation axis 10 about the base rotation axis 8, so that a corresponding pivoting movement of the processing element 9 engaged in the guide 11 about the element rotation axis 10 is caused by means of the guide 11. The contact lugs 5 are tilted, in particular bent, by means of the processing element 9 due to the pivoting movement of the processing element 9 in the direction of the base body 4 and here in particular in the direction of the winding axis 6, in particular about a corresponding tilting axis, in particular a bending axis, of the respective contact lug 5.

[0047] exist Figure 1 and Figure 2. The first of the positions of the corresponding processing element 9 is the initial position A. The second of the positions of the corresponding processing element 9 is the first intermediate position Z1, and the third of the positions of the corresponding processing element 9 is the second intermediate position Z2. The fourth of the positions of the corresponding processing element 9 is the respective flip position U of the corresponding processing element 9. By rotating the base 7, the processing element 9 is pivoted from the respective initial position A into the respective flip position U. The respective processing element 9 reaches the intermediate positions Z1 and Z2 on its travel from the initial position A into the flip position U.

[0048] exist Figure 3 and Figure 4 In the embodiment, the base 7 is in the initial rotation position AD. Thus, the processing element 9 is in the initial position A. If the base 7 is rotated, for example, by 20 degrees from the initial rotation position AD, the processing element 9 is thereby pivoted from the corresponding initial position A to the corresponding first intermediate position Z1, as shown in FIG. Figure 5 and Figure 6 If the base 7 is rotated, for example, by 45 degrees from the initial rotation position AD, the processing element 9 is thereby pivoted, for example, into a corresponding second intermediate position Z2, which is Figure 7 and Figure 8 If the base 7 is rotated from the initial rotation position AD by, for example, 45 degrees, the processing element 9 is thereby pivoted into the corresponding flip position U, which Fig. 9 and 10 In order to tilt the contact lug 5 , the processing element 9 is pivoted from the corresponding starting position A and thus moved into the corresponding tilted position U by the described rotation of the base 7 .

[0049] The base 7 has a first toothing 14, into which a second toothing 15 of a gear wheel 16, also called a pinion, engages. The gear wheel 16 is rotated, for example, in particular by means of an electric motor, about a gear wheel rotation axis, in particular relative to the electrode coil 1, wherein the gear wheel rotation axis extends parallel to the base rotation axis 8 and parallel to the element rotation axis 10 and is spaced apart from the base rotation axis 8 and the corresponding element rotation axis 10. By rotating the gear wheel 16, the base 7 is rotated relative to the electrode coil 1 about the base rotation axis 8, so that the processing element 9 is pivoted from the corresponding initial position A into the corresponding tilting position U. As a result, the contact lug 5 is tilted, in particular bent, in particular in the direction of the winding axis 6 and thus in the direction of the base rotation axis 8. As a result, for example, the tilted contact lug can be mechanically and electrically connected, in particular welded, to a contact element that is constructed separately from the electrode film 3 over a particularly large area, so that a particularly advantageous and secure attachment of the contact lug 5 to the contact element can be achieved.

[0050] Reference numerals list

[0051] 1 electrode roll

[0052] 2 Processing equipment

[0053] 3-electrode membrane

[0054] 4 Matrix

[0055] 5 Contact lugs

[0056] 6 Winding shaft

[0057] 7 Base

[0058] 8 base rotation axis

[0059] 9 Processing components

[0060] 10-element rotating shaft

[0061] 11. Guidance Department

[0062] 12 protrusion

[0063] 13 Base body

[0064] 14First tooth

[0065] 15 Second tooth

[0066] 16 gears

[0067] A Initial Position

[0068] AD initial rotation position

[0069] S1 first end side

[0070] S2 Second end side

[0071] U Flip position

[0072] Z1 first intermediate position

[0073] Z2 second intermediate position

Claims

1. A method for producing a storage cell for an electrical energy accumulator, in which method: - providing an electrode roll (1), the electrode roll having at least one electrode film (3) wound into the electrode roll (1); - Providing a processing device (2), the processing device having: - a base (7) rotatable about a base rotation axis (8); and a processing element (9), each of which is rotatable relative to the base (7) about a corresponding element rotation axis (10), the element rotation axis extending parallel to the base rotation axis (8) and spaced apart from the base rotation axis (8), and the processing element is engaged in a corresponding arc-shaped guide portion (11) of the base (7) rotatable relative to the element rotation axis (10) about the base rotation axis (8); - rotating the base (2) relative to the electrode coil (1), relative to the element rotation axis (10) and relative to the processing element (9) about the base rotation axis (8), thereby causing a corresponding pivoting movement of the processing element (9) about the element rotation axis (10) relative to the electrode coil (1), relative to the base (2) and in the direction of the base rotation axis (8) by means of the guide (11); and At least one subregion of the electrode foil (3) arranged on the end side (S1) of the electrode foil (2) is tilted by means of the processing element (9) due to a pivoting movement of the processing element (9).

2. The method according to claim 1, characterized in that The sub-region comprises a contact lug (5) protruding from a base body (4) of the electrode film (3).

3. The method according to claim 1 or 2, characterized in that: The corresponding guide (11) is ellipsoidal in design.

4. The method according to any one of the preceding claims, characterized in that The base (7) has a first toothed portion (14), in which a second toothed portion (15) of a gear (16) engages, and the gear rotates about a gear rotation axis extending parallel to the base rotation axis (8) and parallel to the corresponding element rotation axis (10) and spaced apart from the base rotation axis (8) and spaced apart from the corresponding element rotation axis (10), so that the base (7) is driven and thereby rotates about the base rotation axis (8).

5. The method according to any one of the preceding claims, characterized in that After the partial region has been tilted over, the partial region is mechanically and electrically connected to a contact element which is designed separately from the partial region.

6. The method according to claim 5, characterized in that The partial region is welded to the contact element and is thereby mechanically and electrically connected to the contact element.

7. The method according to any one of the preceding claims, characterized in that The sub-region is made of a metallic material.

8. The method according to any one of the preceding claims, characterized in that The base (7) is rotated around the base rotation axis (8) by means of an electric motor.

9. A processing device (2) for producing a storage cell for an electric energy storage device, the processing device comprising: - a base (7) rotatable about a base rotation axis (8); as well as - a processing element (9), each of which is rotatable relative to the base (7) about a corresponding element rotation axis (10), the element rotation axis extending parallel to the base rotation axis (8) and spaced apart from the base rotation axis (8), and the processing element engages in a corresponding arc-shaped guide portion (11) of the base (7) which is rotatable relative to the element rotation axis (10) and relative to the processing element (9) about the base rotation axis (8), so that by rotating the base (7) relative to the element rotation axis (11) and relative to the processing element (9) about the base rotation axis (8), a corresponding pivoting movement of the processing element (9) relative to the base (7) and in the direction of the base rotation axis (8) can be caused by means of the guide portion (11).

10. Use of the processing device (2) according to claim 9, wherein: The processing device (2) is used to produce storage cells for electrical energy storage devices.

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