Patent Application
20240030792
This application claims the benefit of the German Application No. 102022118399.8, filed on Jul. 22, 2022, and of the European patent application No. 22202369.9 filed on Oct. 19, 2022, the entire disclosures of which are incorporated herein by way of reference.
The invention relates to a stacking method for stacking wave winding wires to form a winding mat for a coil winding of a stator. The invention further relates to a manufacturing method for manufacturing a winding mat for a coil winding of a stator, the manufacturing method including stacking of wave winding wires using the stacking method. Further, the invention relates to a magazine for use in the stacking method, a stacking device for stacking wave winding wires comprising at least one such magazine, a controller and a computer program for such a stacking device, and a manufacturing device for manufacturing a wave winding mat provided with such a stacking device.
For the definition of the terms and the technological background, reference is made to the following literature:
To manufacture a stator for an electrical machine, it is known to first manufacture a winding mat for forming the coil winding for the stator and then to insert it into a laminated core of the stator, as described and shown, for example, in document [9]. A winding mat is formed from several individual wires, in which straight wire sections, which are inserted in stator slots, are connected to each other by sections bent into a roof shape, the so-called winding heads. The individual wires are formed from a core of conductive metal, usually copper, and an outer insulating layer. To achieve a high filling level, the individual wires often have a mainly rectangular cross-section.
A manufacturing process known, for example, from document [8] for such coil windings formed from a winding mat is the so-called sword winding in which the individual wires are wound onto a former (sword), resulting in winding mats with spirally bent wires. Due to this manufacturing process, the winding heads include a twist. The wires are subject to strong deformation. Strong deformation can impair the insulation and increase the space required for the winding heads.
In contrast to sword winding, winding mats can also be manufactured from multiple flat-bent wave winding wires, as described and shown in documents [1] to [7]. As defined, in particular, in document [4], wave winding wires are single wires bent in a meander shape. The wave winding wires may be interlaced, interwoven, inserted, or stacked. Automated processes for interweaving or interlacing the bent wires to form a wave winding mat are known for this purpose.
Document [3] describes a method in which the bent wires are positioned to each other and then interwoven step by step by rotating the individual wires.
Document [2] discloses a method in which the conductors are bent over in sections so that a second conductor can be placed on top and a pair of conductors is formed by bending back the first conductor.
A method of inserting the winding wires is described in reference [4], in which two bent wave winding wires are positioned relative to each other so that they can be inserted into each other by arranging the wave winding wires in sections above or below the other wire in each case.
In document [5], among other things, a device is described in which a single wave winding wire is conveyed by an endless transport belt and then inserted in a further holder by raising and lowering guide rails.
In document [6], a wave winding mat produced by stacking is shown.
The invention is in the field of the manufacture of a wave winding mat from meander-shaped bent individual wires (=wave winding wires) for the manufacture of a coil winding of an electrical machine. The wave winding, which is usually prefabricated as a linear coil, can have different head configurations. The wire mat can now be made up of, for example, six wires with the same head or also with an additional interchange between two parallel conductors in the head, as shown for example in document [1],
Depending on the filling level and efficiency of the E-machine or generator, each wave winding mat can have its own stacking order of different individual wires, as this is described and shown, in particular, in document [7].
It is an object of the invention to provide methods and devices with which different wave winding mats can be produced from wave winding wires in an automated and reliable manner.
According to one aspect, the invention provides a stacking method for stacking wave winding wires to form a winding mat for a coil winding of a stator, the stacking method comprising the steps of:
Preferably, the stacking method comprises:
It is preferred that the depositing comprises the step of:
It is preferred that the depositing comprises the step of:
It is preferred that the depositing comprises the step of:
It is preferred that the depositing comprises the step of:
It is preferred that the depositing comprises the step of:
It is preferred that the depositing comprises the step of:
It is preferred that the positioning comprises the step of:
It is preferred that the positioning comprises the step of:
It is preferred that the positioning comprises the step of:
According to a further aspect, the invention provides a manufacturing method for manufacturing a winding mat for a coil winding of a stator, the method comprising performing the stacking method according to one of the preceding embodiments (also in any combination with each other) to obtain a stack of wave winding wires, in which stack winding heads are arranged on both sides, and embossing the stack on the workpiece carrier in the region of the winding heads.
According to a further aspect, the invention provides a magazine for use in the stacking process according to any of the preceding embodiments, comprising:
It is preferred that the receiving space is formed by a boundary from a plurality of interchangeable segmented magazine parts.
Preferably, the magazine further comprises a separating device for laterally displacing the lowermost wave winding wire from the receiving space to the depositing position with guide devices for maintaining the geometry of the wave winding wire.
Preferably, the magazine further comprises a transversely reciprocating slider as a support for preventing the wave winding wires from falling downwardly from the receiving space and/or for separating the lowermost wave winding wire by laterally displacing it from the receiving space to the depositing position.
According to a further aspect, the invention provides a stacking device for performing the stacking method according to any of the preceding embodiments, the stacking device comprising:
Preferably, the stacking device comprises insertion elements for actively inserting the wave winding wire to be deposited into the retaining structure.
Preferably, the stacking device comprises a hold-down member for exerting a vertical force on the wave winding wires in the receiving space.
Preferably, the stacking device comprises a first magazine, configured according to one of the preceding embodiments, for receiving first wave winding wires, and a second magazine, preferably also configured according to one of the preceding embodiments, with a differently contoured receiving space for receiving second wave winding wires different from the first wave winding wires, wherein the movement device is designed to move the workpiece carrier between depositing positions of the first and second magazines—preferably, but not necessarily, with different displacement in the longitudinal direction.
In embodiments of the methods and the device according to the invention, the wave winding wires can also be stacked on top of each other in the same position on the workpiece carrier—in particular in the case of differently shaped wave winding wires.
According to a further aspect, the invention provides a control unit for a stacking device according to any one of the preceding embodiments, the control unit being adapted and configured to control the stacking device to perform the stacking process according to any one of the preceding embodiments.
According to a further aspect, the invention provides a computer program comprising control instructions for causing a stacking device according to any one of the preceding embodiments to perform the stacking method according to any one of the preceding embodiments.
According to a further aspect, the invention provides a manufacturing apparatus for manufacturing a winding mat for a coil winding of a stator, the manufacturing device comprising a stacking device according to one of the preceding embodiments and a press adapted to emboss, on the workpiece carrier, winding heads of a stack of wave winding wires formed on the workpiece carrier.
Preferred embodiments of the methods, devices and apparatuses according to the invention relate to or enable a true-to-shape and true-to-position transfer of a wave winding wire without intermediate handling.
Preferably, even very different wave winding mats, including those with conductor exchange as known from [1], with different bent wave winding wires as known from [2] and/or also with wave winding wires different with respect to cross-sections as known from [7], can be produced very gently by stacking in an automated manner. Preferably, deformations and twisting and other strong stresses on the individual wires are avoided, so that risks of damage are reduced.
A particular advantage of the embodiments according to the invention is that wires can be stacked into mats, ensuring that the wire that has already been bent into a wave shape reliably retains its shape and position during handling.
Embodiments of the invention make it possible to stack meander-shaped bent wires (=wave winding wires) on top of each other and to align them with each other. The stacking can take place in different ways, i.e., either individually on top of each other or as pre-grouped individual wires. The wave winding wires themselves can also have the same contour or, due to electrical advantages, different contours, which significantly complicates handling. The alignment with respect to each other is provided in order to be able to transfer the finished wave winding mat to a corresponding pick-up, e.g., a mandrel with narrow slots, see [9], and then insert it into a stator or rotor.
During the manufacture of a single wave winding wire, residual stresses are created which, similar to a spring, push the bent wire apart along its length. This change in the wire should be prevented or at least or reduced for a uniform winding mat. Otherwise, especially in the case of a particularly large number of layers, it is very difficult or possibly even impossible to automate the sorting of the wires again after stacking in accordance with the groove assignment scheme and to use them for subsequent processes, such as for forming or joining a winding head, as proposed, for example, in [9].
It should also be mentioned that although a stress-free production of a meander-shaped single wire is possible, it is connected with higher costs and therefore uneconomical, since the resilience varies due to material variations, and this could only be compensated on the process side by adjustable bending operations, but not with a low-cost bending system with fixed limit stops that is preferable for cost reasons.
In addition, each wave winding mat can have its own stacking sequence, which, as already mentioned, can be made up of several identical or several different individual wires or of a group of individual wires and should be adhered to exactly. Each wave winding wire can be different in its cross section, length and width, as well as in the bending of the roof (distances, head shape).
Preferred embodiments of the invention provide methods, devices and apparatus which enable the different wave winding wires to be assembled into a stacked mat in an automated and positionally accurate manner.
In preferred embodiments of the invention, in order to form a uniform wave winding mat, each individual meander-shaped bent wire (wave winding wire) is always maintained in a defined shape—preferably throughout the entire process. Some embodiments of the invention therefore describe a device in the form of a magazine, in particular a type of drop magazine, in which the wave winding wire is deposited along its contour in such a way that it cannot slip therein and cannot change its geometry. For the mat forming process, in some embodiments, a workpiece receiver—hereinafter referred to as workpiece carrier—is positioned and lifted out from under the device acting as a magazine. In some embodiments, the workpiece carrier is also constructed to hold the individual wires in place. In some embodiments, a positioning device is provided for relative positioning of the magazine and the workpiece carrier. In some embodiments, the workpiece carrier dives into the magazine, in particular drop magazine, to provide for an interlocking of the contours that allows the wire to be transferred in a defined manner without intermediate handling.
In some embodiments, any 2D shape of wire (width, length, height, head spacing, head shape) can be stacked by magazine parts segmented several times. Of course, the parts—especially the entire magazine housing—can also be made from one piece. Each wave winding wire is always held in shape by interaction of the individual magazine parts at several locations.
In some embodiments, in the case of the workpiece carrier already described, the lower part, which can also be segmented several times or made from one piece, retains the wire in a defined shape by means of simple bolts. This modular design has the advantage that a change in the geometry of the wave winding wire/mat can be quickly and easily converted.
In other known methods (such as the method known from [5]), the wave-shaped individual wires must have a height offset before a coil mat can be stacked. In this process, a single wave winding wire is formed by an embossing device at the winding heads and then conveyed to a loading station by means of an endless conveyor belt and guide rails. Only in the loading station the wire is positioned in the correct position in the workpiece carrier by raising and lowering the guide rails. In preferred embodiments of the invention, several individual mats can be placed on top of each other without any intermediate handling and stacked to form a mat. Any intermediate bending of the individual wires, which is also required in braiding for example (see e.g. [2]), can be omitted in embodiments of the invention, and the actuator system for depositing the individual wires in the pick-up can be of more simple design.
Embodiments of the invention are explained in more detail below with reference to the accompanying drawings. In the drawings it is shown by:
Preferred embodiments of a stacking method for stacking wave winding wires 10 to form a winding mat 12 for a coil winding of a stator, as well as a magazine 14 usable in such a stacking method and a stacking device 16 provided with such a magazine 14 will be explained in more detail in the following with reference to the accompanying drawings.
One embodiment of the magazine 14 alone is shown in
In a simple embodiment, the stacking method first comprises the step of:
The magazine 14 is configured as a drop magazine, such that with at least one directional component, the receiving space 18 extends through the magazine 14 in a vertical direction. The contour of the receiving space 18 is adapted to the received wave winding wires 10, so that the wave winding wires 10 are positioned at a plurality of guide devices 20 at different locations of the boundary of the receiving space 18 and are guided through the receiving space 18 without changing their geometry.
Further, the stacking method comprises the step of: positioning a workpiece carrier 22 provided with a retaining structure 24 for a winding mat 12 formed of a plurality of stacked wave winding wires 10 at a first transfer position 23 below the at least one magazine 14 and depositing a wave winding wire 10 from the at least one magazine 14 at a first position 21.1 on the workpiece carrier 22. One embodiment of the workpiece carrier 22 as part of the stacking device 16 is shown, for example, in
Further, the stacking method comprises the step of: positioning the workpiece carrier 22 at a second transfer position offset from the first transfer position 23 below the at least one magazine 14 and depositing another wave winding wire 10 from the at least one magazine 14 on the workpiece carrier 22 at a position 21.2, 21.3, 21.4, . . . offset from the first position 21.1. Examples of correspondingly offset wave winding wires 10a-10f deposited on the workpiece carrier 22 and a winding mat 12 formed therefrom are shown in
The stacking method can be performed using different magazines 14 and workpiece carriers 22, as long as they can perform the above functions.
Preferred embodiments of such magazines 14, workpiece carriers 22, stacking devices 16, as well as preferred embodiments of the stacking method and applications thereof are explained in more detail below with reference to the accompanying drawings.
As shown in
The wave winding wires 10 are wave-shaped or meander-shaped and have a plurality of straight wire sections 26 arranged parallel to each other with a certain spacing therebetween and connected to each other by roof-shaped winding heads 28a, 28b.
Guide devices 20 are formed on the vertical boundary walls of the magazine parts 14.1, 14.2, which engage the straight wire sections 26 as well as each winding head 28a, 28b in order to guide the wave winding wires 10 from top to bottom through the receiving space 18 while maintaining their shape and position.
In preferred embodiments, the magazine 14 further comprises a separating device 29 for separating the wave winding wires 10 to be deposited.
For example, as shown in
The magazine parts 14.1, 14.2 are mounted on a base 32. The magazine 14 further comprises a lift assembly 34 movable up and down relative to the base 32 and having front and rear pins 36, 38. Through holes 40 are provided in one of the magazine parts 14.1 for the front pins 36 to pass through. The rear pins 38 can be guided through the receiving space 18.
Below the slider 30, the magazine 14 further comprises a storage guide device 42 for depositing a wave winding wire 10 at a depositing position 43 which is offset from the receiving space 18 in the transverse direction. The storage guide device 42 is, for example, plate-like in design and also has a meandering contour adapted to the shape of the wave winding wire 10, which serves to guide a wave winding wire 10 offset from the receiving space 18 to the depositing position 43 when it is deposited on the workpiece carrier 22. In particular, when the magazine 14 is constructed in segments, the storage guide device 42 can also be selected from an assortment of different storage guide devices or constructed from an assortment of different segments to form the storage guide device 42.
Below the magazine 14, the stacking device 16 has the workpiece carrier 22 serving as a workpiece receiver, which is movable relative to the magazine 14 upward and downward (in the z-direction) and in the longitudinal extension direction of the wave winding wires 10 or of the receiving space 18 (in the y-direction) by means of a movement device 44 explained in more detail later with reference to
In order to form a uniform wave winding mat or, in short, winding mat 12 by stacking, each individual wire bent in a meandering shape—wave winding wire 10—is always retained in a defined shape throughout the stacking process. The magazine 14 is designed as a kind of drop magazine in which the wave winding wire 10 is deposited along its contour in such a way that it cannot slip in it (in the transverse or longitudinal direction) and cannot change its geometry. For the mat-forming process, the workpiece carrier 22 is positioned and lifted out from under the magazine 14 by means of the positioning device 48. The workpiece carrier 22 is also designed to retain the individual wires in their shape. By the workpiece carrier 22 diving into the magazine 14, an interlocking of the contours is created, which makes it possible to transfer the wave winding wire 10 in a defined manner and without intermediate handling.
As shown in
The magazine has receiving recesses 52.1, 52.2 on its underside, in particular on the underside of the storage guide device 42, into which the locating pins 50 of the retaining structure 24 of the workpiece carrier 22 diving into the magazine can be received in order to transfer a wave winding wire 10. In the state dived into the magazine, as shown in
In some embodiments, multiple segmented magazine parts 14.1, 14.2, 30, 42 can be used to stack any 2D shape of wire (width, length, height, head spacing, head shape). Of course, the parts 14.1, 14.2, 30, 42 can also be made of one piece. Each wave winding wire 10 is always maintained in its shape by the interaction of the individual magazine parts 14.1, 14.2, 30, 42 at several points. In the case of the workpiece carrier 22 already described, a lower part 54, which can also be segmented several times or made from one piece, retains the transferred wave winding wire 10 in a defined shape with the aid of simple pins—here the locating pins 50. The optional modular design has the advantage that a change in geometry of the wave winding wire 10 and/or the winding mat 12 formed with it can be quickly and easily converted.
In the stacking process as well as the stacking device 16 according to preferred embodiments of the invention, single wires or even several single mats (groups of several wave winding wires 10) can be placed on top of each other without any intermediate handling and stacked to form a winding mat 12. Intermediate bending of the individual wires can be eliminated and the actuator system for depositing the individual wires in the workpiece carrier 22 can be configured much simpler than before.
Several 2D-bent (bent two-dimensionally in one plane) wave winding wires 10 are placed one above the other in the magazine 14, which is specially adapted for their wire geometry. By adapting the magazine 14, the stacking device 16 can accommodate almost all widths, lengths and heights of the individual wire. Even straight sections of different lengths, as well as different roof geometries (size, in particular length in longitudinal direction or other geometry of the winding heads) within a wave winding wire 10 are no longer important.
At the bottom of the magazine 14 the slider 30 is located, an embodiment of which is shown in
In some embodiments, the slider 30 performs at least two functions. First, it serves as a support, preventing the wave winding wire 10 from falling down unintentionally. Second, it is used to separate the wave winding wires 10. In other embodiments, the slider 30 may also be configured such that the wave winding wire 10 is not deposited thereon, in which case the slider 30 serves only for separation. This is possible, for example, in that the wave winding wire 10 presses itself outwardly against the guide devices 20 of the magazine 14 due to the inherent tension of the meandering bend. For an improved process with regard to process reliability, however, as in the embodiments shown, the slider 30 is preferably also designed as a support for the wave winding wire 10 as described.
According to
Depending on the wire height, different sliders 30 can be used in the manufacturing process for the winding mat 12. In the case of higher wave winding wires 10, the slider 30 can, for example, be made from a single part, e.g., from a solid plate by machining or other suitable processes. However, in the case of lower wave winding wires 10, for example, two sheets of thin material thickness can also be joined together, preferably welded, so that together they are smaller in height than one wave winding wire. An example of a slider 30 formed from two interconnected individual parts, such as lasered sheets, is shown in vertical section in
In the embodiments shown, the height (z-direction) of the slider 30 is such that only the lowest wave winding wire 10 is displaced in the magazine. The other superimposed wave winding wires 10 are then retained by the magazine during separation.
In the following, a particularly preferred embodiment of the stacking process (with some advantageous optionally provided steps) is explained in more detail on the basis of the illustrations of
The sequence of the stacking process is controlled by the control unit 46 (indicated in
In advantageous embodiments of the stacking method, a workpiece carrier 22 is positioned below the magazine 14 and then lifted out. Depending on the wire and mat geometry, the workpiece carrier 22 itself has locating pins 50 which are arranged and designed in a corresponding manner. A wire section is always located between two adjacent locating pins 50—in particular, the straight wire sections 26 are each deposited between two adjacent locating pins 50.
The spacing between the locating pins 50 is selected to correspond to the spacing of the grooves in the component of the electrical machine receiving the coil winding—in particular the laminated core of a stator. When the winding mat 12 is used in the stator, its longitudinal direction (y-direction of the accompanying Figures) corresponds to the circumferential direction in the stator, the height direction (z-direction) of the winding mat 12 corresponds to the radial direction when used in the stator, and the transverse direction (x-direction) corresponds to the axial direction when the winding mat 12 is used in the stator.
According to
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Subsequently, the workpiece carrier 22 is repositioned in its longitudinal direction according to the desired second position 21.2 of the next wave winding wire 10b to be deposited. For this purpose, the workpiece carrier 22 is generally positioned relative to the magazine 14 at a second transfer position offset longitudinally with respect to the first transfer position 23, in order to deposit a further wave winding wire 10b offset with respect to the previously deposited wave winding wire 10a on the workpiece carrier 22 with the steps that are otherwise the same as described for the first wave winding wire 10a. However, depending on the design of the winding mat 12, it is also possible for another wave winding wire 10b to be deposited at the same longitudinal position as a wave winding wire 10a that has been deposited directly or indirectly before.
a-14c show different views of the workpiece carrier 22 with exemplary wire stacks.
According to some embodiments, as has been illustrated with reference to
In
Since, as already described, a winding mat 12 can also be composed of differently bent single wires—wave winding wires 10—preferably at least one magazine 14a, 14b is provided for each different single wire geometry to be used, depending on the mat geometry, in particular the number of different single wires, the quantity of single wires used in each case and/or the stacking order of the single wires. In the first magazine 14a, a first stack A of wave winding wires 10 with a first geometry is arranged, and in the second magazine 14b, a second stack B with wave winding wires 10 with a different second geometry is arranged.
In order to map the stacking sequence in the workpiece carrier 22, the latter is preferably moved back and forth between the magazines 14a, 14b (movement in the transverse direction or x-direction) via first linear axes 68—example of actuators of the movement device 44. During travel, the workpiece carrier 22 can be moved perpendicular to the direction of travel, i.e., here in the longitudinal direction or y-direction, also preferably using linear axes, in this case the second linear axes 70, in order to produce the required distance between each individual wire with repeatable accuracy and uniformity. Thus the positioning in the longitudinal direction from the first transfer position 23 to the second transfer position can already take place during the travel between the magazines 14a, 14b.
For example, the press 72 includes a lower embossing die 74, an upper embossing die 76, and a joining module 78. Preferably, the lower part 54 of the workpiece carrier 22 is formed as a lower part of the embossing die 74 or is disposed on the lower embossing die 74.
Further, the manufacturing device 66 includes the overall control system 64 configured to automatically control the manufacturing device 66 to perform the manufacturing process for manufacturing the winding mat 12. In addition to performing the stacking process, the manufacturing process also includes embossing winding heads 28a, 28b of the wave winding wires 10a-10f already stacked on the workpiece carrier 22.
A finished winding mat 12 thus is comprised not only of individual wires placed one on top of the other. In order to optimally fit the winding mat 12 into a rotor or stator laminated core, the wave winding wires 10, 10a-10f rather have an embossing in the head area. In order to obtain this, in preferred embodiments, the workpiece carrier 22 is designed in such a way that the individual wires are immediately stacked on the lower part 54 of an embossing die 74. By means of the preferably used linear units 68, 70, the workpiece carrier 22 can be moved exactly to the appropriate upper embossing die 76. This makes it possible, regardless of how many wave winding wires 10 are in the workpiece carrier 22, to then press the winding mat 12—in several partial steps or as a whole. A joining module 78 used for this purpose can perform the pressing from below but also from above. An additional advantage is that even after the pressing process, the winding mat 12 is still retained in shape by the locating pins 50. This makes further workpiece transfer much easier.
As shown in the example of
The systems and devices described herein may include a controller, control unit, controlling means, system control, processor or a computing device comprising a processing unit and a memory which has stored therein computer-executable instructions for implementing the processes described herein. The processing unit may comprise any suitable devices configured to cause a series of steps to be performed so as to implement the method such that instructions, when executed by the computing device or other programmable apparatus, may cause the functions/acts/steps specified in the methods described herein to be executed. The processing unit may comprise, for example, any type of general-purpose microprocessor or microcontroller, a digital signal processing (DSP) processor, a central processing unit (CPU), an integrated circuit, a field programmable gate array (FPGA), a reconfigurable processor, other suitably programmed or programmable logic circuits, or any combination thereof.
The memory may be any suitable known or other machine-readable storage medium. The memory may comprise non-transitory computer readable storage medium such as, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. The memory may include a suitable combination of any type of computer memory that is located either internally or externally to the device such as, for example, random-access memory (RAM), read-only memory (ROM), compact disc read-only memory (CDROM), electro-optical memory, magneto-optical memory, erasable programmable read-only memory (EPROM), and electrically-erasable programmable read-only memory (EEPROM), Ferroelectric RAM (FRAM) or the like. The memory may comprise any storage means (e.g., devices) suitable for retrievably storing the computer-executable instructions executable by processing unit.
The methods and systems described herein may be implemented in a high-level procedural or object-oriented programming or scripting language, or a combination thereof, to communicate with or assist in the operation of the controller or computing device. Alternatively, the methods and systems described herein may be implemented in assembly or machine language. The language may be a compiled or interpreted language. Program code for implementing the methods and systems described herein may be stored on the storage media or the device, for example a ROM, a magnetic disk, an optical disc, a flash drive, or any other suitable storage media or device. The program code may be readable by a general or special-purpose programmable computer for configuring and operating the computer when the storage media or device is read by the computer to perform the procedures described herein.
Computer-executable instructions may be in many forms, including program modules, executed by one or more computers or other devices. Generally, program modules include routines, programs, objects, components, data structures, etc., that perform particular tasks or implement particular abstract data types. Typically, the functionality of the program modules may be combined or distributed as desired in various embodiments.
While at least one exemplary embodiment of the present invention(s) is disclosed herein, it should be understood that modifications, substitutions and alternatives may be apparent to one of ordinary skill in the art and can be made without departing from the scope of this disclosure. This disclosure is intended to cover any adaptations or variations of the exemplary embodiment(s). In addition, in this disclosure, the terms “comprise” or “comprising” do not exclude other elements or steps, the terms “a” or “one” do not exclude a plural number, and the term “or” means either or both. Furthermore, characteristics or steps which have been described may also be used in combination with other characteristics or steps and in any order unless the disclosure or context suggests otherwise. This disclosure hereby incorporates by reference the complete disclosure of any patent or application from which it claims benefit or priority.
| Number | Date | Country | Kind |
|---|---|---|---|
| 102022118399.8 | Jul 2022 | DE | national |
| 22202369.9 | Oct 2022 | EP | regional |
