Device for producing individual electrode sheets for an energy cell from an electrode sheet material and method
Patent Information
- Application Number
- EP2023710352
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2022-03-14
- Filing Date
- 2023-03-10
- Publication Date
- 2025-01-22
AI Technical Summary
Mass production of electrode sheets for energy cells, particularly batteries, requires high-speed separation processes with precise geometry to meet quality and production speed demands, which existing technologies struggle to achieve effectively.
A device equipped with a sensor device and control unit to scan and adjust the contour features of an electrode track, regulating the speed of conveying elements and deflection of the cutting device to accurately position cross-sections for precise cutting, ensuring high production speed and geometric fidelity of electrode sheets.
Enables continuous high-speed production of electrode sheets with geometric deviations less than +/- 0.05 mm, maintaining tolerance for subsequent processes and adapting to various geometries and arrester lug positions, thus ensuring high-quality electrode sheets for energy cells.
Smart Images
Figure 1.1
Abstract
Description
[0001] Device for producing electrode sheets for an energy cell from an electrode web and method
[0002] The present invention relates to a device for producing electrode sheets for an energy cell, in particular for a battery, from an electrode web according to the preamble of claim 1. Furthermore, the invention relates to a corresponding method according to the preamble of claim 13.
[0003] Energy cells or energy storage devices within the meaning of the invention are used, for example, in motor vehicles, other land vehicles, ships, aircraft or even in stationary storage systems in the form of battery cells or fuel cells, in which very large amounts of energy must be stored over longer periods of time.
[0004] Providing a sufficient quantity of energy cells, especially battery cells, requires mass-market manufacturing technologies with high production speeds. Among other things, the assembly of electrode sheets into finished cell stacks, energy cells, or battery cells presents a challenge. Separation processes are particularly important in the production of individual electrode sheets from electrode sheets for a stacked arrangement. Such separation processes are subject to stringent requirements in order to achieve the production speed required for mass production while maintaining the highest possible product quality.Against this background, the object of the invention is to provide a device for producing electrode sheets for an energy cell, in particular for a battery, from an electrode web, which enables the highest possible production speed with sufficient quality and accuracy.
[0005] To achieve this objective, a device for producing electrode sheets for an energy cell, in particular for a battery, from an electrode web is proposed, wherein an electrode web can be fed to the device. The device comprises a sensor device and a control unit, wherein the sensor device is configured to scan features of the contour on at least one edge of the electrode web and to generate a sensor signal. The sensor signal can be received by the control unit, and the control unit is configured to control at least the speed of a driven conveyor element of the device and / or at least the deflection of a deflection element of the device with a control signal based on the received sensor signal.The device comprises a cross-cutting device for producing cross-sections and separating the electrode web into electrode sheets, wherein the cutting position of the cross-cutting device relative to the contour on at least one edge can be regulated by the speed of the at least one driven conveyor element and / or the deflection of the at least one deflection element to a target position relative to one another.
[0006] The electrode sheet is preferably a conductive metal electrode foil, which is further preferably coated with an active anode or cathode material. Furthermore, the anode or cathode material is preferably already calendered on the electrode foil, so that the electrode sheets separated from the electrode sheet can subsequently be fed into a process for forming an energy cell or battery. The electrode sheet is conveyed in one conveying direction and is preferably continuous.
[0007] A contour on an edge of the electrode track, which preferably forms the longitudinal edge of the electrode track, has both longitudinal components, i.e. along the electrode track and the conveying direction, and transverse components, which accordingly run transversely to the conveying direction. Features of the contour can therefore be various geometric features. Such features of the contour, which can also be referred to as a notch contour, can be, for example, a conductor tab, a part of a conductor tab, for example a section running in a transverse direction, a fillet or shoulder, a recess and / or a tapered area between two fillets. In a typical contour, for example, conductor tabs and recesses alternate on one edge, while recesses repeat at regular intervals on the other edge.Furthermore, in a typical contour, the corners of electrode sheets that are still connected in this state can be rounded, so that in a recess a tapered area results at the later intended dividing line of the electrode sheets. These tapered areas are preferably repeated on both edges of the electrode sheet at a distance equal to the intended width of the individual electrode sheets and are located opposite each other. Overall, a corresponding contour can result in particular from a contour cut, which is also known as notching. The cross-cutting device separates the intended electrode sheets from the electrode sheet through the cross section. The position of the cross sections in relation to the contours at the edges or their features is crucial in order to achieve the intended geometry of the manufactured electrode sheets.The cross-cutting device can, for example, comprise a knife roller or a laser for cutting, which can be arranged inside or outside a roller, for example. The cross-cutting device preferably further comprises a suction roller or a suction belt for holding the electrode web and / or for the individual electrode sheets separated from the electrode web.
[0008] The sensor device preferably scans features of the contour in a contactless manner, more preferably optically. The control unit can use the sensor signal of a detected feature of the contour to determine the position of the cutting position relative to the detected contour under current conditions and can regulate this position to a target position by controlling the speed of a driven conveyor element of the device and / or at least the deflection of a deflection element. The target positions relative to one another are thereby corrected or optimized, so that irregularities, possibly even geometric errors, in the electrode track and / or in the device can be corrected, provided the supplied electrode track does not deviate too greatly from the target dimension. The control unit is, in particular, an electronic data processing device.
[0009] The driven conveyor element can, for example, be driven at an overspeed or underspeed compared to the actual conveyor speed of the electrode track to control the position of the cross-section. For this purpose, the driven conveyor element is preferably arranged in the path of the electrode track between the sensor device and the cross-cutting device.
[0010] The deflection element, whose deflection can be controlled accordingly by the control signal, can preferably extend the path length of the electrode path between the sensor device and the cutting position of the cross-cutting device. The deflection element is therefore preferably actively controllable and further preferably arranged in the path of the electrode path between the sensor device and the cutting position of the cross-cutting device.
[0011] In addition to the aforementioned deflection element, further compensation elements or compensation members can be provided along the path in the device, which are preferably passive. A compensation element can preferably be provided upstream of the sensor device and the driven conveyor element, which can compensate for fluctuations in the speed of the conveyor element according to the provided control in the supplied electrode path, acting as a storage device, in order to prevent slippage of the electrode path on the driven conveyor element and / or high mechanical stress in the electrode path. The compensation element or passive deflection element can thus, in particular, prevent the generation of particles by avoiding slippage. A compensation element can, for example, be a dancer unit, a scissor storage device, or an oscillator.
[0012] This enables a device with continuous processes for producing electrode sheets from an electrode web, which enables very high production speeds while simultaneously maintaining high geometric accuracy for the electrode sheets, for example with regard to the target width of the electrode sheets or the conductor tabs. The geometric deviations are preferably less than + / - 0.05 mm, which ensures that subsequent processes, for example during stacking to form a cell stack, have sufficient tolerance so that the resulting energy cell or battery cell remains within the permissible tolerance range. Furthermore, tolerances and fluctuations in the contour features of the supplied electrode web, for example the spacing of recesses, can be compensated.
[0013] According to a further development, it is proposed that the conveying speed of the electrode track be detected by the sensor device or by a sensor and transmitted to the control unit. The control unit is configured to control at least the speed of a driven conveying element based on the received sensor signal and the detected conveying speed.
[0014] This enables improved determination of the position of the intended cutting position for the cross-section relative to the contour or to features of the contour and, accordingly, also improved control to a target position relative to one another. The scanning sensor can thus record the contour of the fed electrode path, which can be combined with the conveyor speed or material speed by the control unit. The actual position and speed of features of the contour can thus be advantageously determined, whereby the cutting position of the cross-cutting device can be controlled to the target position. Furthermore, it is proposed that the distance between the sensor device and the cutting position of the cross-cutting device be at least one time, preferably at least two times, the target distance between two consecutive cross-sections on the electrode path.
[0015] A single distance allows sufficient runtime for the control unit to adjust the cutting position of the cross-section by the cross-cutting device accordingly. The target distance between two consecutive cross-sections corresponds to the width of the target geometry of the electrode blades transverse to the conveying direction. Preferably, the distance is less than ten times the target distance, which can reduce the introduction of further inaccuracies, for example, due to expansion.
[0016] Furthermore, it is proposed that the distance between the sensor device and the cutting position of the cross-cutting device is an integer multiple of the desired distance between two consecutive cross-sections on the electrode track.
[0017] According to a further development, it is proposed that the device for producing electrode sheets with different geometries of the electrode sheets is set up by a control of the control unit to different target positions of the position of the cross sections and the contour relative to each other.
[0018] In this way, the device can be flexibly adapted to different geometries of the electrode blades, so that different types of electrode blades can be produced on a single device. Furthermore, it is proposed that the device for producing electrode blades with different layers of conductor tabs of the electrode blades can be set up to different target positions of the position of the cross sections and the contour relative to one another by controlling the control unit. The device therefore makes it possible to produce electrode blades with conductor tabs in different positions, e.g. in the middle or displaced to one side, right or left. This allows a flexible response to changing requirements regarding the format of the electrode sheets.
[0019] In advantageous embodiments, the sensor device comprises an incident light sensor and / or a contrast light sensor and / or a transmitted light sensor. The scanning of the contour on at least one edge of the electrode track can therefore preferably be carried out optically, with the scanning preferably taking place at a sampling rate of >100 kHz. In a preferred embodiment, a sampling rate of at least one measured value per 100 pm, preferably at least one measured value per 10 pm, of the path traveled by the electrode track is advantageous. A transmitted light sensor is particularly advantageous and, in possible embodiments, can optically scan the contour of the electrode track with a sampling rate of >100 kHz. Depending on the installation situation, the function of a transmitted light sensor may not be possible, so that in this case a contrast light sensor or generally a sensor based on the incident light principle can be used.
[0020] In a preferred embodiment, the at least one driven conveying element is a pull roller, preferably a pair of pull rollers, and / or a suction roller. This allows the position of the cross-section to be controlled or synchronized to a target position particularly quickly and precisely. Furthermore, irregularities in individual features in the contour can also be corrected in this way. In further embodiments, the driven conveying element can be, for example, a conveyor belt system, in particular an upper and lower belt system.
[0021] It is further proposed that the at least one deflection element is a dancer unit and / or a scissor storage device and / or an oscillator.
[0022] As a result, the track length and / or the path of the electrode track can preferably be actively changed between the sensor device and the cross-cutting device, so that the cutting position of the cross-cutting device can be synchronized with the geometric features of the contour of the electrode track.
[0023] An oscillator may, for example, comprise ellipses or cams, by means of which the track length and / or the path of the electrode track can also be changed, preferably between the sensor device and the cross-cutting device.
[0024] According to a further development, it is proposed that a measuring device is provided which has at least one optical sensor which is arranged with a view towards a base surface of the electrode track or electrode sheets and is designed to detect an optical transition generated by a transverse edge of the electrode track or an electrode sheet, in particular in the form of a signal edge.
[0025] In advantageous embodiments, the measuring device can be part of the sensor device and / or be provided separately from the sensor device downstream of the cross-cutting device in the device with respect to the conveying direction. In a separate arrangement, the measuring device can be used, in particular, for process and quality control. In possible embodiments, the transition detected by the measuring device can be transmitted to the control unit as a sensor signal, which is possible both in an embodiment with the measuring device integrated into the sensor device and in an embodiment with a separate measuring device provided in addition to the sensor device.
[0026] The measuring device preferably comprises a plurality of optical sensors arranged transversely to the conveying direction and spaced apart from one another for measuring a transverse edge of an electrode sheet. This enables the determination of the angular orientation of the electrode sheets about an axis perpendicular to the conveying plane, usually about the vertical axis, and thus of any undesired angular offset. In particular, the angular orientation of the planar element can be determined from a time delay in the measurement signals of two optical sensors arranged along the transverse direction, taking into account the distance between the two optical sensors, using trigonometric analysis, in particular by calculating the arctangent of the quotient of the delay length and the sensor distance.
[0027] The distance between the two optical sensors is preferably smaller than the corresponding width of the planar element in the transverse direction in order to enable the detection of the transverse edges of the planar element. The distance between the two optical sensors is preferably at least half the corresponding width of the planar element in the transverse direction, whereby the measurement accuracy when determining the angular offset can be increased. The two optical sensors can each be arranged symmetrically to a center line of the conveyor device, but this is not necessarily the case. In the case of a plurality of optical sensors arranged transversely to the conveying direction and spaced apart from one another, the position of the transverse edge of the planar element can be determined as the average value of both sensors.
[0028] The optical sensors described above can preferably be optical contrast sensors or optical contrast scanners. Optical contrast scanners are set to an optical contrast threshold and provide a digital output signal, meaning the output signal can assume two states depending on whether the measurement signal exceeds the optical contrast threshold or not. An optical contrast sensor outputs an analog signal, namely the optical contrast value on a contrast scale. The use of imaging optical sensors, such as cameras, is not excluded.
[0029] It is further proposed that the measuring device is designed to detect the geometry of the separated electrode sheets.
[0030] This allows, for example, the actual position of the conductor lug relative to the respective electrode sheet to be checked after the electrode sheets have been manufactured, which can be used for quality control purposes. Furthermore, electrode sheets with deviations outside the specified tolerances can be ejected from the product stream by an ejection device of the device based on the measurement of the measuring device. It is further proposed that the device be configured to measure the width of the electrode sheets.
[0031] The width of the electrode sheets is formed by two consecutive cross-sections of the cross-cutting device and can be determined with the measuring device, which can also be used for quality control.
[0032] Furthermore, to achieve the object, a method for producing electrode sheets for an energy cell, in particular for a battery, from an electrode web with a device according to one of claims 1 to 12 is proposed, comprising the following steps:
[0033] - feeding an electrode track to the device;
[0034] - scanning features of the contour on at least one edge of the electrode track and generating a sensor signal;
[0035] - receiving the sensor signal from the control unit and controlling the speed of at least one driven conveyor element of the device and / or the deflection of at least one deflection element of the device by the control unit or on the basis of the received sensor signal with a control signal;
[0036] - Controlling the cutting position of the cross-cutting device relative to the contour on at least one edge by the speed of the at least one driven conveyor element and / or by the deflection of a deflection element to a target position relative to each other; and
[0037] - Production of cross-sections and separation of the electrode web into electrode sheets using the cross-cutting device. The proposed process enables the production of electrode sheets in a continuous process with very high production speed and high geometric fidelity.
[0038] The invention will be explained below using preferred embodiments with reference to the attached figures.
[0039] Fig. 1 shows schematically an apparatus for producing electrode sheets from an electrode web;
[0040] Fig. 2 an electrode track and individual electrode sheets;
[0041] Fig. 3 shows a typical defect pattern on an electrode sheet;
[0042] Fig. 4 shows schematically another device for producing electrode sheets from an electrode web; and
[0043] Fig. 5 to 7 several electrode sheets with conductor lugs at different positions.
[0044] Figure 1 shows a schematic representation of an embodiment of a device 10 for producing electrode sheets 11 from an electrode web 12. The electrode web 12, which is fed to the device 10, is a continuous conductor foil that is at least partially coated with an anode or cathode material.
[0045] The electrode track 12 and two already separated and spaced-apart electrode sheets 11 are shown schematically in Figure 2. The two edges 19, 20 of the electrode track 12 run parallel to the main extension and conveying direction. The edges 19, 20 each have a cut contour 17, 18, wherein the lower edge 19 in Figure 2 has a contour 17 (notch contour) that has regularly arranged recesses 28 formed from two rounded portions 29 (see also Figure 3), the radii of which meet in a tapered region. Such recesses 28 are a feature of a typical contour 17, 18, wherein the cross sections 24 for separating electrode sheets 11 from the electrode track 12 preferably run through the tapered region of the recess 28 in a target position relative to one another.The upper edge 18 in Figure 2 has a contour 19 (notch contour), which additionally has conductor lugs 27 arranged between the recesses 28. The conductor lugs 27 are preferably not coated with an active anode or cathode material.
[0046] Figure 3 shows a possible error pattern at the transition from a contour 17 on an edge 19 to a cross-section 24, which can occur if the cross-cutting device 23 is not optimally adjusted and the cross-section 24, as a result, does not run exactly through the intersection points of the radii of the fillets 29 of a recess 28. Ideally, with this exemplary geometry of the electrode blades 11, the cross-section 24 runs through the tapered region. As schematically shown on the left in Figure 3, the cross-section 24 does not lie on the intended dividing line, which connects the tapered regions of the two opposing recesses 28 in this exemplary embodiment, and thus does not run through the two tapered recesses 28, which generally represent a possible and optically easily scannable feature of a contour 17, 18.In Figure 3 on the right, after spacing the two electrode sheets 11, it can be seen that the faulty cutting position 26 of the cross section 24 creates a sharp-edged strip, which, when used in an energy cell or battery cell, can, for example, damage the separator film and render the entire cell unusable. Such error patterns, as in Figure 3, can be avoided in particular by the proposed device 10, as shown schematically in the embodiment of Figure 1, and the proposed method.
[0047] An electrode web 12 is fed to the device 10 (see Figure 1) as a continuous web. At the longitudinal edges in the sense of the lateral edges 19, 20, the electrode web 12 has, for example, a contour 17, 18, as shown in Figure 2. The device 10 comprises a sensor device 13 which optically scans the features of at least one of the contours 17 or 18. In this exemplary embodiment, the sensor device 13 scans the contours 17, 18 using a transmitted-light sensor with a scanning rate of >100 kHz. A sensor signal 21 generated by the sensor device 13 is transmitted to an electronic control unit 14, which evaluates the sensor signal 21 and generates a control signal 22 for a driven conveyor element 15, in this exemplary embodiment in the form of a pulling roller or in the form of a pair of pulling rollers. Furthermore, a sensor 25 is symbolically shown, which detects the conveying speed or the path speed of the electrode path 12.In alternative embodiments, the sensor 25 can also be integrated into the sensor device 13, or alternatively, the information on the conveying speed can be transmitted from a control system of the device 10 to the control unit 14. The driven conveying element 15 is operated according to the control signal 22 at a speed variable around the base conveying speed. This makes it possible to synchronize features of the contour 17, 18 on the edges 19, 20 of the electrode track 12 with the cutting position 26 of the cross-cutting device 23 such that they are positioned relative to one another according to a target position. Corresponding to the typical defect pattern in Figure 3, the cross-section 24 is to be made on both sides, preferably in the tapered region of the respective recess 28, which can be achieved by controlling the control unit 14.The control of the driven conveyor element 15 thus shifts the cross-section 24 at the cutting position 26 relative to the respective features of the contour 17, 18 of the electrode web 12. This enables a high production speed with high accuracy with regard to the geometry of the electrode sheets 11. At the same time, tolerances in the contours 17, 18, for example irregularities in the distances of repeating features of the contours 17, 18, can be compensated by the active control of the cutting position 26 relative to the conveyed electrode web 12.
[0048] In this exemplary embodiment, the sensor device 13 is arranged in the path of the electrode web 12 upstream of the driven conveyor element 15 controlled by the control unit 14. Furthermore, a compensating element or compensating member (not shown) can be provided upstream of the sensor device 13, which can compensate for the fluctuations in the speed of the conveyor element 15 in accordance with the provided control in the supplied electrode web 12 in the sense of a storage device. The cross-cutting device 23 is shown only schematically and has, for example, a cutting drum 30 and a counter-drum 31, which are arranged such that a gap exists between a circumferential surface of the cutting drum 30 and a circumferential surface of the counter-drum 31, in which gap the electrode web 12 is guided.Radially projecting cutting blades are arranged on the cutting drum 30, with a recess in the outer surface of the cutting drum 30 being provided upstream of the respective cutting blades in relation to the direction of rotation to form a one-sided free space on the cutting blade. A counterblade is provided on the counter drum 31. Furthermore, a recess is provided in the contact surface 9 downstream of the counterblade in relation to the direction of rotation of the counter drum 31, so that the counterblade has a free cutting edge on its downstream side.
[0049] Furthermore, a measuring device 32 can be provided, which serves for the quality control of the electrode sheets 11 cut from the electrode web 12.
[0050] Figure 4 schematically shows a further embodiment of a device 10 for producing electrode sheets 11 from an electrode web 12, which, unlike the embodiment in Figure 1, has a deflection element 16. The deflection of the deflection element 16, which is schematically shown as a dancer unit, can be changed by means of the control signal 22, so that the length of the electrode web 12 between the sensor device 12 and the cross-cutting device 23 changes accordingly. As a result, the contours 17, 18 of the electrode web 12 can be regulated to a respective target position relative to the cross sections 24. With the device 10, the cross sections 24 can be easily shifted with respect to certain features of the contours 17, 18 of the electrode web 12, for example the conductor lugs 27. Therefore, the different electrode sheets 11 shown in Figures 5 to 7 can be produced using the same device 10.In Figure 5, for example, the conductor lug 27 is offset to the right, which can correspond to a displacement in the conveying direction for an electrode track 12. Figure 6 shows an embodiment of an electrode sheet 11 with a conductor lug 27 in a central arrangement, and Figure 7 shows an arrangement with a conductor lug 27, which can correspond to a displacement opposite to the conveying direction for an electrode track 12.
[0051] List of reference symbols
[0052] Device 10 Electrode sheet 11 Electrode track 12
[0053] Sensor device 13
[0054] Control unit 14 Conveyor element 15 Deflection element 16 Contour 17 , 18
[0055] Edge 19 , 20
[0056] Sensor signal 21
[0057] Control signal 22
[0058] Cross cutting device 23 Cross section 24
[0059] Sensor 25
[0060] Cutting position 26 Conductor lug 27 Recess 28 Rounding 29
[0061] Cutting drum 30
[0062] Counter drum 31 Measuring device 32
Claims
Claims:
1. Device (10) for producing electrode sheets (11) for an energy cell, in particular for a battery, from an electrode web (12), characterized in that - an electrode path (12) can be supplied to the device (10), wherein - the device (10) comprises a sensor device (13) and a control unit (14), wherein - the sensor device (13) is configured to scan features of the contour (17, 18) on at least one edge (19, 20) of the electrode path (12) and to generate a sensor signal (21), wherein - the sensor signal (21) is receivable by the control unit (14) and the control unit (14) is configured to control at least the speed of a driven conveying element (15) of the device (10) and / or at least the deflection of a deflection element (16) of the device (10) on the basis of the received sensor signal (21) with a control signal (22), wherein - the device (10) has a transverse cutting device (23) for producing cross-sections (23) and singulating the electrode path (12) into electrode sheets (11), wherein - the cutting position (26) of the cross-cutting device (23) relative to the contour (17, 18) at at least one edge (19, 20) can be controlled by the speed of the at least one driven conveying element (15) and / or by the deflection of the at least one deflection element (16) to a target position relative to each other. Device (10) according to claim 1 , characterized in that - the conveying speed of the electrode track (12) can be detected by the sensor device (13) or by a sensor (25) and transmitted to the control unit (14), wherein the control unit (14) is configured to control at least the speed of a driven conveying element (15) based on the received sensor signal (21) and the detected conveying speed. Device (10) according to claim 1 or 2, characterized in that - the distance between the sensor device (13) and the cutting position (26) of the transverse cutting device (23) is at least the single, preferably at least twice, target distance of two successive cross-sections (24) on the electrode path (12). Device (10) according to one of the preceding claims, characterized in that - the distance between the sensor device (13) and the cutting position (26) of the transverse cutting device (23) is an integer multiple of the target distance between two successive cross-sections (24) on the electrode path (12). Device (10) according to one of the preceding claims, characterized in that - the device (10) for manufacturing electrode sheets (11) with different geometries of the electrode sheets (11) by controlling the control unit (14) to different- the target positions of the cross-sections (24) and the contour (17, 18) relative to each other are set. Device (10) according to claim 5, characterized in that - the device (10) for manufacturing electrode sheets (11) with different positions of conductor tabs (27) of the electrode sheets (11) can be adjusted to different target positions of the cross-sections (24) and the contour (17, 18) relative to each other by means of a control unit (14). Device (10) according to one of the preceding claims, characterized in that - the sensor device (13) comprises a reflected light sensor and / or a contrast light sensor and / or a transmitted light sensor. Device according to one of the preceding claims, characterized in that - the at least one driven conveying element (15) is a traction roller, preferably a pair of traction rollers, and / or a suction roller. Device according to one of the preceding claims, characterized in that - that at least one deflection element (16) is a dancer unit and / or a scissor storage unit and / or an oscillator. Device (10) according to one of the preceding claims, characterized in that - a measuring device (32) is provided which has at least The device (10) comprises an optical sensor arranged with a viewing direction towards a base surface of the electrode track or electrode sheets and configured to detect an optical transition generated by a transverse edge of the electrode track or an electrode sheet, in particular in the form of a signal edge. The device (10) according to claim 10 is characterized in that - the measuring device (32) is configured to detect the geometry of the individual electrode sheets (11). Device (10) according to claim 10 or 11, characterized in that - the measuring device (32) is configured to measure the width of the electrode sheets (11). Method for producing electrode sheets (11) for an energy cell, in particular for a battery, from an electrode web (12) with a device (10) according to one of the preceding claims, characterized by the steps: - Supplying an electrode path (12) to the device (10); - Scanning features of the contour (17, 18) at at least one edge (19, 20) of the electrode path (12) and generating a sensor signal (21); - Receiving the sensor signal (21) from the control unit (14) and controlling the speed of at least one driven conveying element (15) of the device (10) and / or the deflection of at least one deflection element (16) of the device (10) by the control unit (14) or on the basis of the received sensor signal (21) with a control signal nal (22); - Control of the cutting position (26) of the transverse cutting device (23) relative to the contour (17, 18) at at least one edge (19, 20) by the speed of the at least one driven conveying element (15) and / or by the deflection of a deflection element (16) to a target position relative to each other; and - Production of cross-sections (24) and singulation of the electrode path (12) into electrode sheets (11) by the cross-cutting device (23).