DE102022105871A1 - Device for producing electrode sheets for an energy cell from an electrode track and method - Google Patents

Abstract

The invention relates to a device (10) for producing electrode sheets (11) for an energy cell, in particular for a battery, from an electrode web (12). The device (10) comprises a sensor device (13) and a control unit (14), the sensor device (13) being used to scan features of the contour (17, 18) on at least one edge (19, 20) of the electrode track (12) and is set up to generate a sensor signal (21). The sensor signal (21) can be received by the control unit (14) and the control unit (14) is set up to determine 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) based on the received sensor signal (21) with a control signal (22), the device (10) having a cross-cutting device (23) for producing cross sections (23) and separating the electrode web (12) into electrode sheets (11). . The cutting position (26) of the cross-cutting device (23) relative to the contour (17, 18) on at least one edge (19, 20) is determined 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) can be adjusted to a target position relative to one another. The invention further relates to a corresponding method.

Description

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. The invention further relates to a corresponding method according to the preamble of claim 13.

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 in stationary storage systems in the form of battery cells or fuel cells, in which very large amounts of energy have to be stored over long periods of time.

In order to provide a sufficient amount of energy cells, especially battery cells, mass-produced manufacturing technologies with high production speeds are required. Among other things, the assembly of electrode tracks into finished cell stacks or energy or battery cells represents a challenge. When producing individual electrode sheets from electrode tracks for a stacked arrangement, separation processes become particularly important. High demands are placed on such separation processes in order to achieve the production speed required for mass production with 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.

To solve the problem, a device for producing electrode sheets for an energy cell, in particular for a battery, from an electrode track is proposed, with an electrode track being able to be fed to the device. The device comprises a sensor device and a control unit, wherein the sensor device is set up to scan features of the contour on at least one edge of the electrode track and to generate a sensor signal. The sensor signal can be received by the control unit and the control unit is set up to regulate at least the speed of a driven conveying element of the device and/or at least the deflection of a deflection element of the device based on the received sensor signal with a control signal. The device has a cross-cutting device for producing cross-sections and separating the electrode web into electrode sheets, the cutting position of the cross-cutting device relative to the contour on at least one edge being determined by the speed of the at least one driven conveying element and/or the deflection of the at least one deflection element to a target position relative to one another is adjustable.

The electrode track is preferably a conductive electrode film made of metal, 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 film, so that the electrode sheets separated from the electrode web can then be fed to a process for forming an energy cell or battery. The electrode web is conveyed in one conveying direction and is preferably endless.

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, as well as 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, an arrester lug (tab), a part of an arrester lug, for example a section running in a transverse direction, a rounding or shoulder, a recess and/or a tapering region between two be roundings. With a typical contour, for example, arrester tabs and recesses alternate on one edge, while recesses repeat at regular intervals on the other edge. Furthermore, with a typical contour, the corners of electrode sheets that are still connected in this state can be rounded, so that a recess results in a tapered area at the later provided dividing line of the electrode sheets. These tapered areas are preferably repeated on both edges of the electrode track at a distance of the intended width of the individual electrode sheets and are 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 track through the cross section. The position of the cross sections relative to the contours on the edges or their features is crucial in order to achieve the intended geometry of the electrode sheets produced. The cross-cutting device can include, for example, a knife roller or a laser for cutting, which can be arranged, for example, inside or outside a roller. 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.

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 regulate this by controlling the speed of a driven conveying element of the device and/or at least the deflection of a deflection element to a target position. The target position relative to one another is thereby corrected or even optimized, so that irregularities and possibly even geometric errors in the electrode track and/or in the device can be corrected, provided that the supplied electrode track does not have excessive deviations from the target dimension. The control unit is in particular an electronic data processing device.

The driven conveying element can, for example, be driven at an over or under speed compared to the actual conveying speed of the electrode track in order to control the position of the cross section. For this purpose, the driven conveying element is preferably arranged in the path of the electrode path between the sensor device and the cross-cutting device.

The deflection element, whose deflection can be regulated 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 of the cutting position of the cross-cutting device.

In addition to the aforementioned deflection element, further compensating elements or compensating members can generally be provided in the device in the course of the path, which are preferably passive. A compensating element can preferably be provided in front of the sensor device and the driven conveying element, which can compensate for the fluctuations in the speed of the conveying element in accordance with the intended regulation in the supplied electrode web in the sense of a memory in order to avoid slippage of the electrode web on the driven conveying element and/or high mechanical tension in the electrode path. The compensating element or passive deflection element can therefore in particular prevent the generation of particles by avoiding slip. A compensation element can be, for example, a dancer unit, a scissor accumulator or an oscillator.

A device with continuous processes for producing electrode sheets from an electrode web is thus made possible, which enables very high production speeds with at the same time high geometric accuracy for the electrode sheets, for example in relation to the target width of the electrode sheets or the arrester tabs. The geometric deviations are preferably less than +/- 0.05 mm, which means that subsequent processes, for example when stacking to form a cell stack, have sufficient tolerance so that the later energy cell or battery cell lies within the permissible tolerances. Furthermore, tolerances and fluctuations in the features of the contours of the supplied electrode track, for example the distances between recesses, can be compensated for.

According to a further development, it is proposed that the conveying speed of the electrode track can be detected by the sensor device or by a sensor and transmitted to the control unit. The control unit is set up to regulate at least the speed of a driven conveyor element based on the received sensor signal and the detected conveyor speed.

This enables an improved determination of the position of the intended cutting position for the cross section in relation to the contour or features of the contour and, accordingly, also an improved control of a target position in relation to one another. The scanning sensor can thus record the contour of the supplied electrode web, which can be combined with the conveying 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 regulated to the target position.

Furthermore, it is proposed that the distance between the sensor device and the cutting position of the cross-cutting device is at least one, preferably at least twice, the desired distance of two successive cross sections on the electrode track.

A simple distance allows sufficient running time to be able to adjust the cutting position of the cross section through the cross cutting device by the control unit accordingly. The target distance between two successive cross sections corresponds to the width of the target geometry of the electrode blades transverse to the conveying direction. The distance is preferably less than ten times the desired distance, which means that the introduction of further inaccuracies, for example due to expansion, can be reduced.

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 target distance of two successive cross sections on the electrode track.

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 regulating the control unit to different target positions of the position of the cross sections and the contour relative to one another.

In this way, the device can be flexibly adapted to different geometries of the electrode sheets, so that different types of electrode sheets can be produced on one device.

Furthermore, it is proposed that the device for producing electrode sheets with different layers of arrester lugs of the electrode sheets can be set up by regulating the control unit to different target positions of the position of the cross sections and the contour relative to one another. The device therefore makes it possible to have electrode sheets with arrester flags in different positions, for example in the middle or to one side, to the right or to the left. This makes it possible to react flexibly to changing requirements for the format of the electrode sheets.

In advantageous embodiments, the sensor device comprises an incident light sensor and/or a contrast light scanner 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 scanning rate >100 kHz. In a preferred embodiment, a sampling rate of at least one measured value per 100 μm, preferably at least one measured value per 10 μm, of the electrode path traveled 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 >100 kHz. Depending on the installation situation, the function of a transmitted light sensor may not be possible, so in this case a contrast light scanner or generally a sensor based on the reflected light principle can be used.

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 regulated or synchronized to a target position particularly quickly and precisely. Furthermore, irregularities of individual features in the contour can also be corrected in this way. In further embodiments, the driven conveyor element can be, for example, a conveyor belt system, in particular an upper and lower belt system.

It is further proposed that the at least one deflection element is a dancer unit and/or a scissor memory and/or an oscillator.

As a result, the web length and/or the path of the electrode web 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 web.

An oscillator can, for example, comprise ellipses or cams, through which the path length and/or the path of the electrode path can also be changed, preferably between the sensor device and the cross-cutting device.

According to a further development, it is proposed that a measuring device is provided which has at least one optical sensor, which is arranged facing a base area of the electrode track or electrode sheets and for detecting 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 is set up.

In advantageous embodiments, the measuring device can be part of the sensor device and/or can be provided separately from the sensor device in the device in relation to the conveying direction after the cross-cutting device. With 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 integrated in one embodiment with the measuring device Sensor device as well as in an embodiment with a separate measuring device, which are provided in addition to the sensor device, is possible.

The measuring device preferably has 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 makes it possible to determine the angular orientation of the electrode sheets about an axis perpendicular to the conveying plane, usually about the vertical axis, and thus an undesirable angular offset. In particular, the angular orientation of the flat element can be determined from a time delay in the measurement signals of two optical sensors, which are arranged along the transverse direction, taking into account the distance between the two optical sensors by means of trigonometric consideration, in particular arc tangent formation of the quotient of the delay length and sensor distance.

The distance between the two optical sensors is preferably smaller than the corresponding width of the flat element in the transverse direction in order to enable the detection of the transverse edges of the flat element. The distance between the two optical sensors is preferably at least half as large as the corresponding width of the flat 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 flat element can be determined as the average value of both sensors.

The optical sensors described above can preferably be optical contrast sensors or optical contrast sensors. Optical contrast scanners are set to an optical contrast threshold and deliver a digital output signal, i.e. 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.

It is further proposed that the measuring device be set up to record the geometry of the isolated electrode sheets.

In this way, for example, the actual position of the arrester tab in relation to the respective electrode sheet can be checked after the electrode sheets have been manufactured, which can be used for quality control. 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, the measuring device, be set up to measure the width of the electrode sheets.

The width of the electrode sheets is formed by two successive cross sections of the cross-cutting device and can be determined with the measuring device, which can also be used for quality control.

• - Zuführen einer Elektrodenbahn zu der Vorrichtung;
• - Abtasten von Merkmalen der Kontur an mindestens einer Kante der Elektrodenbahn und Erzeugung eines Sensorsignals;
• - Empfangen des Sensorsignals von der Regelungseinheit und Regeln der Geschwindigkeit mindestens eines angetriebenen Förderelements der Vorrichtung und/oder der Auslenkung mindestens eines Auslenkelements der Vorrichtung durch die Regelungseinheit oder auf Basis des empfangenen Sensorsignals mit einem Steuersignal;
• - Regeln der Schneidposition der Querschneidevorrichtung zu der Kontur an mindestens einer Kante durch die Geschwindigkeit des mindestens einen angetriebenen Förderelements und/oder durch die Auslenkung eines Auslenkelements auf eine Ziellage zueinander; und
• - Herstellung von Querschnitten und Vereinzelung der Elektrodenbahn zu Elektrodenblättern durch die Querschneidevorrichtung.

Furthermore, to solve the problem, a method for producing electrode sheets for an energy cell, in particular for a battery, from an electrode track with a device according to one of claims 1 to 12 with the following steps is proposed:

• - feeding an electrode track to the device;
• - scanning features of the contour on at least one edge of the electrode track and generating a sensor signal;
• - Receiving the sensor signal from the control unit and regulating 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 based on the received sensor signal with a control signal;
• - Regulating 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 one another; and
• - Production of cross-sections and separation of the electrode web into electrode sheets using the cross-cutting device.

The proposed method enables the production of electrode sheets in a continuous process with very high production speed and high geometric fidelity.

• 1 schematisch eine Vorrichtung zur Herstellung von Elektrodenblättern aus einer Elektrodenbahn;
• 2 eine Elektrodenbahn und vereinzelte Elektrodenblätter;
• 3 ein typisches Fehlerbild an einem Elektrodenblatt;
• 4 schematisch eine weitere Vorrichtung zur Herstellung von Elektrodenblättern aus einer Elektrodenbahn; und
• 5 bis 7 mehrere Elektrodenblätter mit Ableiterfahnen an unterschiedlichen Positionen.

The invention is explained below using preferred embodiments with reference to the attached figures. This shows

• 1 schematically a device for producing electrode sheets from an electrode web;
• 2 an electrode track and isolated electrode sheets;
• 3 a typical error pattern on an electrode sheet;
• 4 schematically a further device for producing electrode sheets from an electrode web; and
• 5 until 7 several electrode sheets with arrester flags in different positions.

1 shows an exemplary embodiment of a device 10 for the production of electrode sheets 11 from an electrode web 12 in a schematic representation. The electrode track 12, which is supplied to the device 10, is an endless conductor foil which is at least partially coated with an anode or cathode material.

The electrode track 12 and two already isolated and spaced apart electrode sheets 11 are shown schematically in the 2 shown. 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, which in the 2 lower edge 19 has a contour 17 (notch contour) which has regularly arranged recesses 28 which consist of two roundings 29, see also 3 , are formed whose radii meet in a tapered area. Such recesses 28 are a feature of a typical contour 17, 18, with the cross sections 24 for separating electrode sheets 11 from the electrode track 12 preferably running through the tapered region of the recess 28 in a target position towards one another. The ones in the 2 Upper edge 18 has a contour 19 (notch contour), which additionally has arrester tabs 27 arranged between the recesses 28. The arrester lugs 27 are preferably not coated with an active anode or cathode material.

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 pass exactly through the intersection points of the radii of the roundings 29 of a recess 28 runs. In this exemplary geometry of the electrode sheets 11, the cross section 24 ideally runs through the tapered region. Like in the 3 Shown schematically on the left, the cross section 24 does not lie on the intended dividing line, which connects the tapered areas of the two opposite recesses 28 in this exemplary embodiment and therefore does not run through the two tapered recesses 28, which are generally a possible and optically easily palpable feature of a contour 17, 18 represent. In the 3 On the right, after spacing the two electrode sheets 11, it can be seen that the incorrect cutting position 26 of the cross section 24 creates a sharp-edged strip, which, when used in an energy cell or battery cell, can damage the separator film, for example, and make the entire cell unusable. Such error patterns, as in 3 , can in particular by the proposed device 10, such as in the exemplary embodiment 1 shown schematically, and the proposed method can be avoided.

The device 10, see 1 , an electrode track 12 is supplied as an endless track. On the longitudinal edges in the sense of the lateral edges 19, 20, the electrode track 12 has, for example, a contour 17, 18, as in 2 shown. The device 10 includes 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 with a transmitted light sensor with a sampling 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 pull roller or in the form of a pair of pull rollers. Furthermore, a sensor 25 is symbolically shown, which detects the conveying speed or the path speed of the electrode path 12. In alternative exemplary embodiments, the sensor 25 can also be integrated into the sensor device 13 or, alternatively, the information about the conveying speed can be transmitted from a control of the device 10 to the control unit 14.

The driven conveying element 15 is operated in accordance with the control signal 22 at a speed that is variable around the basic conveying speed. In this way, it can be achieved that features of the contour 17, 18 on the edges 19, 20 of the electrode track 12 can be synchronized with the cutting position 26 of the cross-cutting device 23 in such a way that they lie relative to one another in accordance with a target position. According to the typical error pattern of the 3 The cross section 24 is to be made on both sides, preferably in the tapered area of the respective recess 28, which can be achieved by regulating the control unit 14. The regulation of the driven conveying 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 track 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 between repeating features of the contours 17, 18, can be compensated for by the active control of the cutting position 26 relative to the conveyed electrode web 12.

In this exemplary embodiment, the sensor device 13 is arranged in the path of the electrode path 12 in front of the driven conveyor element 15 controlled by the control unit 14. Furthermore, a compensating element or compensating member, not shown, can be provided in front of the sensor device 13, which can compensate for the fluctuations in the speed of the conveying element 15 in accordance with the intended control in the supplied electrode track 12 in the sense of a memory.

The cross-cutting device 23 is only shown schematically and has, for example, a cutting drum 30 and a counter-drum 31, which are arranged in such a way that there is a gap between a lateral surface of the cutting drum 30 and a lateral surface of the counter-drum 31, in which the electrode track 12 is guided. Radially projecting cutting blades are arranged on the cutting drum 30, with a recess being provided in the lateral surface of the cutting drum 30 in relation to the direction of rotation upstream of the respective cutting blades to form a one-sided free space on the cutting blade. A counter knife is provided on the counter drum 31. Furthermore, in relation to the direction of rotation of the counter drum 31, a recess is provided in the contact surface 9 downstream of the counter knife, so that the counter knife has a free cutting edge on its downstream side.

Furthermore, a measuring device 32 can be provided, which serves to check the quality of the electrode sheets 11 cut from the electrode web 12.

4 shows schematically a further exemplary embodiment of a device 10 for producing electrode sheets 11 from an electrode web 12, which differs from the exemplary embodiment of 1 has a deflection element 16. The deflection of the deflection element 16, which is shown schematically as a dancer unit, can be changed by means of the control signal 22, so that the path length of the electrode path 12 between the sensor device 12 and the cross-cutting device 23 changes accordingly. As a result, the contours 17, 18 of the electrode track 12 can be regulated to the cross sections 24 to a respective target position relative to one another.

With the device 10, the cross sections 24 can be easily shifted in relation to certain features of the contours 17, 18 of the electrode track 12, for example the arrester tabs 27. Therefore they are in the 5 until 7 Different electrode sheets 11 shown can be produced with the same device 10. In 5 For example, the arrester lug 27 is offset to the right, which in the case of an electrode track 12 can correspond to a shift in the conveying direction. 6 shows an exemplary embodiment of an electrode sheet 11 with a conductor lug 27 in a central arrangement, and 7 shows an arrangement with an arrester lug 27, which in the case of an electrode track 12 can correspond to a displacement against the conveying direction.

Reference symbol list

10

contraption

11

electrode sheet

12

Electrode track

13

Sensor device

14

Control unit

15

Conveying element

16

Deflection element

17, 18

contour

19, 20

Edge

21

Sensor signal

22

Control signal

23

Cross cutting device

24

cross-section

25

sensor

26

Cutting position

27

Arrester flag

28

recess

29

rounding

30

cutting drum

31

counter drum

32

Measuring device

Claims (13)

Device (10) for producing electrode sheets (11) for an energy cell, in particular for a battery, from an electrode track (12), characterized in that - an electrode track (12) can be fed to the device (10), wherein - the device ( 10) comprises a sensor device (13) and a control unit (14), wherein - the sensor device (13) for scanning features of the contour (17, 18) on at least one edge (19, 20) of the electrode track (12) and for generating a sensor signal (21), wherein - the sensor signal (21) can be received by the control unit (14) and the control unit (14) is set up to at least the speed of a driven conveying element (15) of the device (10) and / or at least to regulate the deflection of a deflection element (16) of the device (10) based on the received sensor signal (21) with a control signal (22), wherein - the device (10) has a cross-cutting device (23) for producing cross-sections (23) and separating the electrode web (12) to form electrode sheets (11), wherein - the cutting position (26) of the cross-cutting device (23) to the contour (17, 18) on at least one edge (19, 20) is determined by the speed of the at least one driven conveyor element ( 15) and/or can be regulated by the deflection of the at least one deflection element (16) to a target position relative to one another. Device (10) after 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 can be transmitted to the control unit (14), the control unit (14) being set up to at least the speed a driven conveying element (15) based on the received sensor signal (21) and the detected conveying speed. Device (10) after Claim 1 or 2 , characterized in that - the distance between the sensor device (13) and the cutting position (26) of the cross-cutting device (23) is at least one, preferably at least twice, the desired distance of two successive cross sections (24) on the electrode track (12). . Device (10) according to one of the preceding claims, characterized in that - the distance between the sensor device (13) and cutting position (26) of the cross-cutting device (23) is an integer multiple of the target distance of two successive cross sections (24) on the electrode track ( 12). Device (10) according to one of the preceding claims, characterized in that - the device (10) for producing electrode sheets (11) with different geometries of the electrode sheets (11) by regulating the control unit (14) to different target positions of the position of the cross sections (24) and the contour (17, 18) are set up to each other. Device (10) after Claim 5 , characterized in that - the device (10) for producing electrode sheets (11) with different layers of conductor lugs (27) of the electrode sheets (11) by regulating the control unit (14) to different target positions of the position of the cross sections (24) and the contour (17,18) can be adjusted to one another. Device (10) according to one of the preceding claims, characterized in that - the sensor device (13) comprises an incident 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 pull roller, preferably a pair of pull rollers, and/or a suction roller. Device according to one of the preceding claims, characterized in that - the at least one deflection element (16) is a dancer unit and/or a scissor memory 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 one optical sensor, which is arranged with a view towards a base of the electrode track or electrode sheets and for detecting one of a transverse edge of the electrode track or an electrode sheet generated optical transition, in particular in the form of a signal edge. Device (10) after Claim 10 , characterized in that - the measuring device (32) is set up to record the geometry of the isolated electrode sheets (11). Device (10) after Claim 10 or 11 , characterized in that - The measuring device (32) is set up 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 track (12) with a device (10) according to one of the preceding claims, characterized by the steps: - supplying an electrode track (12) to the device (10); - scanning features of the contour (17, 18) on at least one edge (19, 20) of the electrode track (12) and generating a sensor signal (21); - Receiving the sensor signal (21) from the control unit (14) and regulating 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 based on the received sensor signal (21) with a control signal (22); - Controlling the cutting position (26) of the cross-cutting device (23) relative to the contour (17, 18) on at least one edge (19, 20) by the speed of the at least one driven conveyor element (15) and/or by the deflection of a deflection element (16 ) on a target position to each other; and - producing cross sections (24) and separating the electrode web (12) into electrode sheets (11) by the cross-cutting device (23).

Images