Electrode plate slitting device and electrode plate slitting method using same

Abstract

The invention relates to an electrode plate slitting device and an electrode plate slitting method using the same. The electrode plate slitting apparatus includes: a first cutting unit configured to cut a supplied electrode plate raw material into a plurality of divided electrode plates; a second cutting unit configured to cut the plurality of divided electrode plates; a sensor unit configured to detect the plurality of divided electrode plates supplied to the second cutting unit so as to obtain detected information related to the plurality of divided electrode plates; and a control unit configured to receive the detected information related to the plurality of divided electrode plates, and control driving of the second cutting unit.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Korean Patent Application No. 10-2024-0159933, filed with the Korean Intellectual Property Office on November 12, 2024, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The embodiments relate to an electrode plate cutting device and an electrode plate cutting method using the electrode plate cutting device. Background Technology

[0004] A secondary battery is formed by inserting an electrode assembly into a housing and sealing the housing with a cover assembly, in which a positive electrode plate, a negative electrode plate, and a separator are wound. The positive or negative electrode plate (hereinafter referred to as "electrode plate") is formed having a coated portion in which an active material slurry is coated on an aluminum or copper film and an uncoated portion in which no coating is applied.

[0005] The information disclosed in this background section is intended to enhance the understanding of the background of this disclosure, and therefore, the information may include information that does not constitute related (or prior art). Summary of the Invention

[0006] An embodiment includes an electrode plate slitting device, comprising: a first cutting unit configured to cut supplied electrode plate raw materials into a plurality of segmented electrode plates; a second cutting unit configured to cut the plurality of segmented electrode plates; a sensor unit configured to detect the plurality of segmented electrode plates supplied to the second cutting unit, thereby obtaining detected information related to the plurality of segmented electrode plates; and a control unit configured to receive the detected information related to the plurality of segmented electrode plates and control the driving of the second cutting unit.

[0007] The electrode plate raw material may have multiple coated portions and multiple uncoated portions that alternate and repeat in the width direction of the electrode plate raw material, and each of the multiple segmented electrode plates may include one coated portion of the multiple coated portions and one uncoated portion of the multiple uncoated portions.

[0008] The first cutting unit may include a plurality of dividing cutters, each of which has a cutting width corresponding to the width of each of the plurality of divided electrode plates, and the plurality of dividing cutters may be spaced apart from each other, with spacers between the plurality of dividing cutters.

[0009] The electrode plate raw material may have multiple coated portions and multiple uncoated portions. The sensor unit may be further configured to detect the boundary line between one coated portion and one uncoated portion of the multiple coated portions in each of the multiple segmented electrode plates. The control unit may be further configured to compensate for, drive and control the second cutting unit based on the error of the boundary line detected by the sensor unit.

[0010] Before being cut by the second cutting unit, the multiple segmented electrode plates can be separated alternately in different directions, and the second cutting unit can include multiple slitting lines respectively arranged on the multiple segmented electrode plates along the path of their separation.

[0011] Each of the plurality of slitting lines may include: a coating-side cutter configured to slit one side of the coated portion of each of the plurality of segmented electrode plates; and an uncoated-side cutter configured to slit one side of the uncoated portion of each of the plurality of segmented electrode plates.

[0012] The coated and uncoated side cutters can be driven and controlled independently.

[0013] The sensor unit can be provided as a plurality of sensor units, which are configured to detect, respectively, a plurality of segmented post-electrode plates supplied to a plurality of slit lines.

[0014] The electrode plate slitting device may further include: an alignment unit configured to adjust the alignment of the supplied electrode plate raw materials.

[0015] The alignment unit can be further configured to adjust the alignment of the supplied electrode plate raw materials based on information related to the multiple segmented electrode plates detected by the sensor unit.

[0016] An embodiment provides an electrode plate slicing method, comprising: supplying electrode plate raw materials to a first cutting unit; cutting the electrode plate raw materials into multiple segmented electrode plates by the first cutting unit; supplying the multiple segmented electrode plates to a second cutting unit; cutting the multiple segmented electrode plates by the second cutting unit; detecting the multiple segmented electrode plates supplied to the second cutting unit by a sensor unit; and controlling the drive of the second cutting unit by a control unit based on information related to the multiple segmented electrode plates detected by the sensor unit.

[0017] The electrode plate raw material may have multiple coated portions and multiple uncoated portions arranged alternately and repeatedly in the width direction of the electrode plate raw material, and each of the multiple segmented electrode plates includes one coated portion of the multiple coated portions and one uncoated portion of the multiple uncoated portions.

[0018] The first cutting unit may include a plurality of dividing cutters, each of which has a cutting width corresponding to the width of each of the plurality of divided electrode plates, and the plurality of dividing cutters may be arranged to be spaced apart from each other, with spacers between the plurality of dividing cutters.

[0019] The electrode plate slicing method may further include: detecting the boundary line between the coated and uncoated portions of each of the plurality of slicing electrode plates using a sensor unit; and compensating for, driving, and controlling a second cutting unit based on the error of the boundary line detected by the sensor unit.

[0020] The electrode plate slitting method may further include: alternately separating multiple segmented electrode plates in different directions to obtain separated segmented electrode plates, and supplying the separated segmented electrode plates to a second cutting unit, wherein the second cutting unit includes multiple slitting lines respectively arranged on the multiple segmented electrode plates along the path of their separation.

[0021] The electrode plate slitting method may further include: slitting one side of the coated portion of each of the plurality of segmented electrode plates using a coating-side cutter; and slitting one side of the uncoated portion of each of the plurality of segmented electrode plates using an uncoated-side cutter.

[0022] The electrode plate slitting method may further include: independently driving and controlling the coated side cutter and the uncoated side cutter.

[0023] The detection may include detecting the segmented electrode plates supplied to multiple slitting lines using multiple sensor units.

[0024] The electrode plate slitting method may further include: adjusting the alignment of the electrode plate raw materials supplied to the first cutting unit by means of an alignment unit.

[0025] The alignment unit can be further configured to adjust the alignment of the electrode plate raw materials supplied to the first cutting unit based on information related to the multiple segmented electrode plates detected by the sensor unit. Attached Figure Description

[0026] Features will become apparent to those skilled in the art from the detailed description of exemplary embodiments with reference to the accompanying drawings, in which:

[0027] Figure 1 This is a configuration diagram illustrating an electrode plate slitting apparatus according to an embodiment of the present disclosure;

[0028] Figure 2 It is a diagram. Figure 1 A plan view of the raw materials for the electrode plate;

[0029] Figure 3 It is a diagram. Figure 1 The front view of the first cutting unit;

[0030] Figure 4 The diagram is in the form of Figure 1 Plan view of the electrode plate after segmentation before and after the second cutting unit;

[0031] Figure 5 It is a diagram. Figure 1 A perspective view of the electrode plate separation unit;

[0032] Figure 6 It is a diagram. Figure 1 A front view of the upper and lower tangent lines of the second cutting unit;

[0033] Figure 7 It is a diagram. Figure 1 A rear perspective view of the upper winding unit and the lower winding unit; and

[0034] Figure 8 This is a flowchart of an electrode plate cutting method according to an embodiment of the present disclosure. Detailed Implementation

[0035] Example embodiments will now be described more fully below with reference to the accompanying drawings; however, example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey exemplary implementation to those skilled in the art.

[0036] In the accompanying drawings, for clarity of illustration, the dimensions of layers and regions may be exaggerated. It will also be understood that when a layer or element is referred to as being "on" another layer or substrate, the layer or element may be directly on that other layer or substrate, or an intervening layer may be present. Furthermore, it will be understood that when a layer is referred to as being "below" another layer, the layer may be directly below that other layer, and one or more intervening layers may be present. Additionally, it will be understood that when a layer is referred to as being "between" two layers, the layer may be the only layer between the two layers, or one or more intervening layers may be present. The same reference numerals denote the same elements throughout.

[0037] It will be understood that the terminology used in this specification and claims should not be construed as limited to its general and dictionary meanings, but rather should be interpreted based on the principle that the inventors are allowed to appropriately define the terminology for the best interpretation, and on the meanings and concepts corresponding to the technical aspects of this disclosure. Therefore, the embodiments described herein and the components illustrated in the accompanying drawings are merely the most preferred embodiments of this disclosure and do not represent all aspects of the technical spirit of this disclosure; and therefore, it should be understood that various equivalents and modifications can be made to replace them at the time of submission of this disclosure.

[0038] Furthermore, it will be further understood that the terms “comprising” and / or “including” as used herein indicate the presence of the stated shapes, quantities, processes, operations, components, parts and / or groups thereof, but do not exclude the presence or addition of one or more other shapes, quantities, processes, operations, components, parts and / or groups thereof.

[0039] Furthermore, to aid in understanding this disclosure, the drawings are not drawn to scale, and the dimensions of some components may be exaggerated. Additionally, the same reference numerals may be assigned to the same elements in different embodiments.

[0040] When describing two objects as “identical,” it means that these objects are “substantially identical.” Accordingly, substantially identical objects can include those considered to have low deviations in the art (e.g., deviations within 5%). Furthermore, when describing certain parameters as uniform in a region, this can mean that these parameters are uniform in terms of average value in the corresponding region.

[0041] Although the terms "first" and "second," etc., are used to describe different elements, these elements are not limited by these terms. These terms are used to distinguish one element from another, and unless otherwise stated, a first element can be a second element.

[0042] Throughout this specification, unless otherwise stated, each element may be singular or plural.

[0043] When an element is referred to as being arranged "above (or below)" or "above (or below)" another element, the element may be arranged on the upper (or lower) surface of the other element, and an intervening element may be arranged between the element and the other element above (or below) the element.

[0044] Furthermore, when an element is referred to as “connected,” “coupled,” or “linked” to another element, it should be understood that the element may be directly connected, coupled, or linked to that other element, or an intermediary element may be “between” these elements; for example, these elements may be “connected,” “coupled,” or “linked” to each other through yet another element. Additionally, when a part is referred to as “electrically coupled” to another part, the part may be directly connected to that other part, or it may be connected to that other part through an intermediary element between the part and the other part.

[0045] Unless otherwise stated, throughout this specification, "A and / or B" means A, B, or A and B. That is, "and / or" includes all or any combination of the listed items. Unless otherwise stated, "C to D" includes values ​​greater than or equal to C but less than or equal to D.

[0046] The terminology used herein is for the purpose of describing embodiments of this disclosure and is not intended to limit this disclosure.

[0047] Figure 1 This is a configuration diagram illustrating an electrode plate slitting apparatus according to an embodiment of the present disclosure. Figure 2 It is a diagram. Figure 1 A plan view of the raw materials for the electrode plate. Figure 3 It is a diagram. Figure 1 The front view of the first cutting unit. Figure 4 The diagram is in the form of Figure 1 Plan view of the electrode plate after segmentation before and after the second cutting unit. Figure 5 It is a diagram. Figure 1 A perspective view of the electrode plate separation unit. Figure 6 It is a diagram. Figure 1 A front view of the upper and lower tangent lines of the second cutting unit. Figure 7 It is a diagram. Figure 1 A rear perspective view of the upper and lower winding units.

[0048] refer to Figure 1 The electrode plate slitting device 1 according to the embodiments of the present disclosure may include a raw material loading unit 100, an alignment unit 200, a first cutting unit 300, an electrode plate separating unit 400, a second cutting unit 500, a sensor unit 600, a winding unit 700, and a control unit 800.

[0049] According to an embodiment of the present disclosure, the electrode plate slitting device 1 may have a multi-stage cutting structure, which cuts the electrode plate raw material 20 into multiple segmented electrode plates 21 in one step by the first cutting unit 300, and independently cuts multiple segmented electrode plates 21a and multiple segmented electrode plates 21b in two steps by the second cutting unit 500.

[0050] According to an embodiment of the present disclosure, the electrode plate slitting device 1 can detect, by sensor unit 600, a plurality of slit electrode plates 21a and a plurality of slit electrode plates 21b supplied to the second cutting unit 500 after a first slitting unit 300 performs a slitting operation, and control unit 800 can receive information related to the plurality of slit electrode plates 21a and a plurality of slit electrode plates 21b detected by sensor unit 600, so as to drive and control the second cutting unit 500.

[0051] For example, when multiple segmented electrode plates 21a and multiple segmented electrode plates 21b are cut at the first cutting unit 300 in the width direction ( Figure 1When the material is tilted to one side in the Y-axis direction and supplied to the second cutting unit 500, the sensor unit 600 can detect this situation, and the control unit 800 can drive and control the second cutting unit 500 based on the information detected by the sensor unit 600.

[0052] Therefore, even when the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b are in the width direction ( Figure 1 When the electrode plates are tilted to one side in the Y-axis direction and are improperly supplied to the second cutting unit 500, the control unit 800 can also compensate and adjust the cutting position of the second cutting unit 500 so that the multiple divided electrode plates 21a and multiple divided electrode plates 21b are accurately cut by the second cutting unit 500 to the required (e.g., predetermined) width.

[0053] refer to Figure 1 and Figure 2 According to embodiments of this disclosure, electrode plate raw material 20 can be rotatably loaded onto raw material loading unit 100 for slitting process.

[0054] The raw material loading unit 100 may include a roller with a rotating shaft, and the electrode plate raw material 20 wound into a coil shape may be detachably loaded onto the raw material loading unit 100.

[0055] The electrode plate raw material 20 loaded onto the raw material loading unit 100 can be in the unwinding direction ( Figure 1 The electrode plate raw material 20 is supplied to the alignment unit 200 in the X-axis direction, and the electrode plate raw material 20 supplied to the alignment unit 200 can be supplied to the first cutting unit 300 to perform a slitting process.

[0056] The electrode plate raw material 20 can have a width direction ( Figure 2 The coated portion 20a and the uncoated portion 20b are arranged alternately and repeatedly in the Y-axis direction and can be wound into a coil shape.

[0057] The electrode plate raw material 20 can be loaded onto the raw material loading unit 100, so that the unwinding direction ( Figure 2 The X-axis direction in the diagram) and the direction of the slitting process ( Figure 1 The position of the X-axis in the diagram is consistent with that of the other party.

[0058] For example, the coated portion 20a may be the portion in which slurry is coated on the current collector, and the uncoated portion 20b may be the portion in which slurry is not coated on the current collector, the uncoated portion 20b being subsequently formed into a terminal piece. The coated portion 20a and the uncoated portion 20b of the electrode plate raw material 20 may each have predetermined widths cd and ncd, respectively.

[0059] The coated portion 20a and the uncoated portion 20b of the electrode plate raw material 20 can be in the unwinding direction ( Figure 2 It is formed continuously along the X-axis direction.

[0060] The alignment unit 200 according to an embodiment of the present disclosure may be a unit that supplies electrode plate raw material 20 unwound from raw material loading unit 100 to first cutting unit 300 and may apply, for example, center position control (CPC) or edge position control (EPC).

[0061] For example, the alignment unit 200 can employ a system such as CPC or EPC, so that the electrode plate raw material 20 unwound from the raw material loading unit 100 can be supplied to the first cutting unit 300 with a precise orientation.

[0062] refer to Figures 1 to 4 According to an embodiment of the present disclosure, the first cutting unit 300 can cut the electrode plate raw material 20 supplied from the alignment unit 200 into a plurality of segmented electrode plates 21.

[0063] The first cutting unit 300 can cut the electrode plate raw material 20 into multiple segmented electrode plates 21, each segmented electrode plate 21 including a coated portion 20a-1 and an uncoated portion 20b-1.

[0064] Each of the multiple segmented electrode plates 21 cut by the first cutting unit 300 may have a coated portion 20a-1 and an uncoated portion 20b-1 with predetermined widths cd1 and ncd1, respectively.

[0065] For example, the width cd1 of the coated portion 20a-1 and the width ncd1 of the uncoated portion 20b-1 of each of the multiple segmented electrode plates 21 can be smaller than the width cd of the coated portion 20a and the width ncd of the uncoated portion 20b of the electrode plate raw material 20, respectively.

[0066] First cutting unit 300 (see...) Figure 3 The device may include a plurality of upper dividing cutters 310 and a plurality of lower dividing cutters 320, each dividing cutter having a cutting width corresponding to (e.g., similar or the same as) the width (cd1+ncd1) (e.g., total width) of each of the plurality of divided electrode plates 21.

[0067] Multiple upper dividing cutters 310 and multiple lower dividing cutters 320 may be included in the vertical direction ( Figure 3 The upper dividing tool 310 and the lower dividing tool 320 are a pair on the Z-axis direction, and the upper dividing tool 310 and the lower dividing tool 320 can rotate in contact with each other to form a cutting point.

[0068] Multiple upper dividing cutters 310 can be arranged via upper spacers 315 in the width direction of the electrode plate raw material 20. Figure 3 The multiple lower dividing cutters 320 are spaced apart from each other in the Y-axis direction, and can be arranged to be spaced apart from each other in the width direction of the electrode plate raw material 20 by the lower spacer 325.

[0069] Therefore, the first cutting unit 300 can be formed in the width direction of the electrode plate raw material 20. Figure 3 Multiple cutting points spaced apart from each other in the Y-axis direction of the electrode plate raw material 20, and pairs of cutting points adjacent to each other on the left and right sides in the width direction of the electrode plate raw material 20 can correspond to one of the multiple segmented electrode plates 21 (e.g., equal to one of the multiple segmented electrode plates 21).

[0070] For example, the distance between pairs of cutting points of the first cutting unit 300 can be equal to the sum of the width cd1 of the coated portion 20a-1 and the width ncd1 of the uncoated portion 20b-1 of each of the multiple divided electrode plates 21 (i.e., cd1+ncd1).

[0071] Accordingly, the electrode plate raw material 20 supplied to the first cutting unit 300 can be cut into multiple divided electrode plates 21 by multiple upper dividing cutters 310 and multiple lower dividing cutters 320, and the remaining part of the electrode plate raw material 20 can be scrapped except for the multiple divided electrode plates 21.

[0072] refer to Figure 1 and Figure 5 According to an embodiment of the present disclosure, the electrode plate separation unit 400 can alternately classify a plurality of segmented electrode plates 21 cut and discharged from the first cutting unit 300 in different directions and supply them to the second cutting unit 500.

[0073] For example, the electrode plate separating unit 400 may include an upper roller 410 and a lower roller 420. Multiple segmented electrode plates 21 cut and discharged from the first cutting unit 300 can be moved upwards and downwards (relative to each other) via the upper roller 410 and lower roller 420 of the electrode plate separating unit 400. Figure 5 Classification based on the Z-axis direction.

[0074] For example, multiple segmented electrode plates 21 cut and discharged from the first cutting unit 300 can be in the width direction ( Figure 5 The rows are arranged in multiple lines from right to left along the Y-axis.

[0075] For example, multiple segmented electrode plates 21a in odd-numbered rows can be sorted upwards (e.g., guided) by the upper roller 410, and multiple segmented electrode plates 21b in even-numbered rows can be sorted downwards by the lower roller 420.

[0076] According to an embodiment of the present disclosure, the electrode plate slitting apparatus 1 can classify (e.g., transport) a plurality of slit electrode plates 21 in different directions by an electrode plate separation unit 400, and supply the plurality of slit electrode plates 21 to a second cutting unit 500. Accordingly, the second cutting unit 500 can individually adjust the slitting width of each of the plurality of slit electrode plates 21a and the plurality of slit electrode plates 21b, thereby minimizing slitting defects.

[0077] refer to Figure 1 , Figure 4 and Figure 6 According to an embodiment of the present disclosure, the second cutting unit 500 performs a slitting process to cut a plurality of segmented electrode plates 21a and a plurality of segmented electrode plates 21b supplied from the electrode plate separation unit 400 to a preset width (cd2+ncd2).

[0078] The second cutting unit 500 may include multiple cutting lines 510 and multiple cutting lines 520 for cutting multiple segmented electrode plates 21a and multiple segmented electrode plates 21b that have been sorted and supplied by the electrode plate separation unit 400 in different directions. The multiple cutting lines 510 may be arranged on the multiple segmented electrode plates 21a along the path on which they are separated, and the multiple cutting lines 520 may be arranged on the multiple segmented electrode plates 21b along the path on which they are separated.

[0079] For example, the second cutting unit 500 may include an upper cutting line 510 and a lower cutting line 520. The upper cutting line 510 cuts a plurality of segmented electrode plates 21a in odd-numbered rows supplied by the upper roller 410 of the electrode plate separation unit 400, and the lower cutting line 520 cuts a plurality of segmented electrode plates 21b in even-numbered rows supplied by the lower roller 420 of the electrode plate separation unit 400.

[0080] The upper slitting line 510 may include coating-side cutters 511a and 513a that cut one side of the coated portion 20a-1 of the multiple divided electrode plates 21a in odd-numbered rows, and uncoated-side cutters 511b and 513b that cut one side of the uncoated portion 20b-1 of the multiple divided electrode plates 21a in odd-numbered rows.

[0081] The coating side cutters 511a and 513a of the upper tangent 510 may be included in the vertical direction ( Figure 6 The pair of upper coating side tool 511a and lower coating side tool 513a in the Z-axis direction.

[0082] The uncoated side cutters 511b and 513b of the upper tangent 510 may be included in the vertical direction ( Figure 6The pair of uncoated upper side tool 511b and uncoated lower side tool 513b in the Z-axis direction.

[0083] The coated side cutters 511a and 513a and the uncoated side cutters 511b and 513b of the upper tangent 510 can be driven and controlled independently.

[0084] For example, the pair of side-coating cutters 511a and 513a can be coated in the vertical direction ( Figure 6 The coated side drive units 512a and 514a are connected to each other in the Z-axis direction, respectively, and the uncoated side cutters 511b and 513b can be connected in the vertical direction ( Figure 6 The uncoated side drive units 512b and 514b are connected to each other on the Z-axis direction.

[0085] For example, the coated side drive units 512a and 514a and the uncoated side drive units 512b and 514b may each include a servo motor that can be individually controlled by the control unit 800, and the coated side drive units 512a and 514a and the uncoated side drive units 512b and 514b may be arranged in the width direction ( Figure 6 It reciprocates on a guide rail extending along the Y-axis.

[0086] For example, the coating-side drive units 512a and 514a and the uncoated-side drive units 512b and 514b can respectively rotate the pair of coating-side cutters 511a and 513a and the pair of uncoated-side cutters 511b and 513b individually, while in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0087] For example, a pair of coated side cutters 511a and 513a can rotate in contact with each other to form a cutting point, and a pair of uncoated side cutters 511b and 513b can also rotate in contact with each other to form a cutting point.

[0088] The cutting points of the coated side cutters 511a and 513a are separated from the cutting points of the uncoated side cutters 511b and 513b in the width direction. Figure 6 The distance in the Y-axis direction can be set to be equal to the desired (e.g., predetermined) slitting width (cd2+ncd2) of the multiple segmented electrode plates 21a in the odd-numbered rows.

[0089] For example, the pair of coated side drive units 512a and 514a and the pair of uncoated side drive units 512b and 514b can be driven and controlled by the control unit 800 in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0090] Therefore, when multiple segmented electrode plates 21a in odd-numbered rows are in the width direction ( Figure 6 When the electrode plate 21a is tilted in the Y-axis direction and supplied to the upper slitting line 510, the pair of coated side drive units 512a and 514a and the pair of uncoated side drive units 512b and 514b can move in the tilting direction of the slitting electrode plate 21a under the drive and control of the control unit 800 to perform slitting.

[0091] Accordingly, even when multiple segmented electrode plates 21a in odd-numbered rows are tilted in the width direction and supplied to the upper tangent line 510, the segmented electrode plates 21a can be segmented such that the coated portion 20a-2 and the uncoated portion 20b-2 have the required (e.g., predetermined) widths cd2 and ncd2, respectively.

[0092] refer to Figure 1 , Figure 4 and Figure 6 The lower cutting line 520 may include coating-side cutters 521a and 523a that cut one side of the coated portion 20a-1 of the multiple divided electrode plates 21b in even-numbered rows, and uncoated-side cutters 521b and 523b that cut one side of the uncoated portion 20b-1 of the multiple divided electrode plates 21b in even-numbered rows.

[0093] The coating side cutters 521a and 523a of the lower tangent 520 may be included in the vertical direction ( Figure 6 The pair of upper coating side tool 521a and lower coating side tool 523a in the Z-axis direction.

[0094] The uncoated side cutters 521b and 523b of the lower tangent 520 may be included in the vertical direction ( Figure 6 The pair of uncoated upper side tool 521b and uncoated lower side tool 523b in the Z-axis direction.

[0095] The coated side cutters 521a and 523a and the uncoated side cutters 521b and 523b of the lower tangent 520 can be driven and controlled independently.

[0096] For example, the pair of side-coating cutters 521a and 523a can be coated in the vertical direction ( Figure 6 The coated side drive units 522a and 524a are connected to each other in the Z-axis direction, respectively, and the uncoated side cutters 521b and 523b can be connected in the vertical direction ( Figure 6 The uncoated side drive units 522b and 524b are connected to each other on the Z-axis direction.

[0097] For example, the coated side drive units 522a and 524a and the uncoated side drive units 522b and 524b may each include a servo motor that can be individually controlled by the control unit 800, and the coated side drive units 522a and 524a and the uncoated side drive units 522b and 524b may be arranged in the width direction ( Figure 6 It reciprocates on a guide rail extending along the Y-axis.

[0098] For example, the coating-side drive units 522a and 524a and the uncoated-side drive units 522b and 524b can respectively rotate the coating-side cutters 521a and 523a and the uncoated-side cutters 521b and 523b individually in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0099] For example, a pair of coated side cutters 521a and 523a can rotate in contact with each other to form a cutting point, and a pair of uncoated side cutters 521b and 523b can also rotate in contact with each other to form a cutting point.

[0100] The cutting points of the coated side cutters 521a and 523a are separated from the cutting points of the uncoated side cutters 521b and 523b in the width direction. Figure 6 The distance in the Y-axis direction can be set to be equal to the desired (e.g., predetermined) slitting width (cd2+ncd2) of the electrode plate 21b after multiple divisions in even rows.

[0101] For example, the pair of coated side drive units 522a and 524a and the pair of uncoated side drive units 522b and 524b can be driven and controlled by the control unit 800 in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0102] Therefore, when multiple segmented electrode plates 21b in even-numbered rows are in the width direction ( Figure 6 When the electrode plate 21b is tilted in the Y-axis direction and supplied to the lower slitting line 520, the pair of coated side drive units 522a and 524a and the pair of uncoated side drive units 522b and 524b can move in the tilting direction of the slitting electrode plate 21b under the drive and control of the control unit 800 to perform slitting.

[0103] Accordingly, even when multiple segmented electrode plates 21b in an even row are tilted in the width direction and supplied to the lower tangent line 520, the segmented electrode plates 21b can be segmented such that the coated portion 20a-2 and the uncoated portion 20b-2 have the required widths cd2 and ncd2, respectively.

[0104] refer to Figure 1 , Figure 4 and Figure 6 According to an embodiment of the present disclosure, the sensor unit 600 can detect a plurality of segmented electrode plates 21a and a plurality of segmented electrode plates 21b supplied to the second cutting unit 500.

[0105] For example, sensor unit 600 can detect the boundary lines between the coated portions 20a-1 and uncoated portions 20b-1 of multiple segmented electrode plates 21a and 21b, and transmit the boundary line information as a detection signal to control unit 800. Control unit 800 can then determine the boundary lines based on the detection signal from sensor unit 600, corresponding to the boundary lines in the width direction of the multiple segmented electrode plates 21a and 21b. Figure 4 The degree of tilt along the Y-axis (in the middle) is used to drive and control the second cutting unit 500.

[0106] The sensor unit 600 may include an upper sensor unit 610 configured to detect the segmented electrode plate 21a supplied to the upper slit line 510 and a lower sensor unit 620 configured to detect the segmented electrode plate 21b supplied to the lower slit line 520.

[0107] For example, the upper sensor unit 610 can detect multiple segmented electrode plates 21a in odd-numbered rows that are sorted from the upper roller 410 and supplied to the upper slitting line 510, and the lower sensor unit 620 can detect multiple segmented electrode plates 21b in even-numbered rows that are sorted from the lower roller 420 and supplied to the lower slitting line 520.

[0108] The upper sensor unit 610 can detect the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21a in odd-numbered rows, and transmit the detection signal to the control unit 800. The lower sensor unit 620 can detect the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21b in even-numbered rows, and transmit the detection signal to the control unit 800.

[0109] For example, the upper sensor unit 610 and the lower sensor unit 620 may each include a charge-coupled device (CCD) camera, but various vision devices capable of detecting the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21a and the multiple segmented electrode plates 21b can be used.

[0110] refer to Figure 1 , Figure 4 and Figure 7 According to embodiments of the present disclosure, the winding unit 700 may include an upper winding unit 710 and a lower winding unit 720.

[0111] The upper winding unit 710 can individually wind the divided electrode plates 21a in odd-numbered rows, which are cut by the upper tangent line 510, to form multiple coil electrode plates 23a.

[0112] The plurality of coil electrode plates 23a formed by the upper winding unit 710 may include coated portions 20a-2 with a constant width cd2 and uncoated portions 20b-2 with a constant width ncd2.

[0113] The lower winding unit 720 can individually wind the divided electrode plates 22b in even-numbered rows, which are cut by the lower slitting line 520, to form multiple coil electrode plates 23b.

[0114] The plurality of coil electrode plates 23b formed by the lower winding unit 720 may include a coated portion 20a-2 with a constant width cd2 and an uncoated portion 20b-2 with a constant width ncd2.

[0115] Multiple coil electrode plates 23a and 23b wound on the upper winding unit 710 and the lower winding unit 720 can be formed into products such as electrode plates for pouch cells or prismatic cells by performing subsequent processes such as slotting.

[0116] refer to Figure 1 , Figure 4 and Figure 6 According to an embodiment of the present disclosure, the control unit 800 can receive detection information related to the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b detected by the sensor unit 600, and drive and control the second cutting unit 500.

[0117] For example, due to slitting width defects in the first cutting unit 300 or slurry coating width errors in the process of forming the coated portion, the plurality of segmented electrode plates 21a and 21b supplied to the second cutting unit 500 may have width directions ( Figure 6 It tilts to one side along the Y-axis direction.

[0118] For example, the sensor unit 600 can detect the boundary line between the coated portion 20a-1 and the uncoated portion 20b-1 of the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b, and transmit the boundary line information to the control unit 800.

[0119] The control unit 800 can determine the width direction of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b based on the error of the boundary line detected by the sensor unit 600. Figure 1The tilt in the Y-axis direction is compensated for and the cutting position of the second cutting unit 500 is controlled.

[0120] Therefore, even when the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b are in the width direction ( Figure 1 When the electrode plates are tilted to one side in the Y-axis direction and are improperly supplied to the second cutting unit 500, the control unit 800 can also compensate and adjust the cutting position of the second cutting unit 500 so that the multiple divided electrode plates 21a and multiple divided electrode plates 21b are accurately cut to the required width by the second cutting unit 500.

[0121] For example, the control unit 800 according to an embodiment of the present disclosure may receive information related to the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b detected by the sensor unit 600, and drive and control the alignment unit 200.

[0122] For example, the control unit 800 can receive information detected by the sensor unit 600 related to the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b, and determine the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b in the width direction ( Figure 4 The tilt along the Y-axis.

[0123] The control unit 800 can determine the tilt of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b in the width direction, and drive and control the alignment unit 200 in the direction opposite to the tilt of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b.

[0124] The control unit 800 can adjust the electrode plate raw material 20 supplied to the first cutting unit 300 in the width direction via the alignment unit 200. Figure 1 The position on the Y-axis (in the middle) is used to further improve the accuracy of the cutting width in the second cutting unit 500.

[0125] The electrode plate cutting method according to embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0126] Figure 8 This is a flowchart of an electrode plate cutting method according to an embodiment of the present disclosure.

[0127] refer to Figure 1 and Figure 8The electrode plate slitting method according to the embodiments of the present disclosure may include: loading electrode plate raw material 20 (step S100); cutting the electrode plate raw material 20 into a plurality of segmented electrode plates 21 in one step (step S200); cutting the plurality of segmented electrode plates 21 a second time (step S300); detecting the segmented electrode plates 21a and 21b supplied to the second cutting unit 500 (step S400); compensating for and controlling the drive of the second cutting unit 500 (step S500); and adjusting the alignment of the electrode plate raw material 20 supplied to the first cutting unit 300 (step S600).

[0128] Loading the electrode plate raw material 20 (step S100) is the operation of loading the electrode plate raw material 20 onto the raw material loading unit 100.

[0129] According to embodiments of the present disclosure, the electrode plate raw material 20 can be rotatably mounted on the raw material loading unit 100, such that the unwinding direction ( Figure 1 The X-axis direction in the diagram) and the direction of the slitting process ( Figure 1 (The X-axis direction in the diagram) is consistent with the direction of the X-axis.

[0130] refer to Figure 1 and Figure 2 According to embodiments of the present disclosure, the electrode plate raw material 20 may have a width direction ( Figure 2 The coated portion 20a and the uncoated portion 20b are arranged alternately and repeatedly in the Y-axis direction and can be wound into a coil shape.

[0131] For example, the coated portion 20a may be the portion in which slurry is coated on the current collector, and the uncoated portion 20b may be the portion in which slurry is not coated on the current collector, the uncoated portion 20b being subsequently formed into a terminal piece. The coated portion 20a and the uncoated portion 20b of the electrode plate raw material 20 may each have predetermined widths cd and ncd, respectively.

[0132] The coated portion 20a and the uncoated portion 20b of the electrode plate raw material 20 can be in the unwinding direction ( Figure 2 It is formed continuously along the X-axis direction.

[0133] The alignment unit 200 according to an embodiment of the present disclosure may be a unit that supplies electrode plate raw material 20 unwound from raw material loading unit 100 to first cutting unit 300 and may be a unit such as CPC or EPC.

[0134] For example, the alignment unit 200 can employ a system such as CPC or EPC, so that the electrode plate raw material 20 unwound from the raw material loading unit 100 can be supplied to the first cutting unit 300 with a precise orientation.

[0135] refer to Figure 1 and Figure 8 The step S200 is the operation of cutting the electrode plate raw material 20 into multiple segmented electrode plates 21 at the first cutting unit 300.

[0136] refer to Figures 1 to 4 According to an embodiment of the present disclosure, the first cutting unit 300 can cut the electrode plate raw material 20 supplied from the alignment unit 200 into a plurality of segmented electrode plates 21.

[0137] The first cutting unit 300 can cut the electrode plate raw material 20 into a plurality of segmented electrode plates 21, each segmented electrode plate 21 including a coated portion 20a-1 and an uncoated portion 20b-1 (e.g., composed of a pair of coated portions 20a-1 and uncoated portions 20b-1).

[0138] The coated portion 20a-1 and the uncoated portion 20b-1 of the segmented electrode plate 21 cut by the first cutting unit 300 can each have a predetermined width cd1 and ncd1, respectively.

[0139] For example, the width cd1 of the coated portion 20a-1 and the width ncd1 of the uncoated portion 20b-1 of the divided electrode plate 21 can be smaller than the width cd of the coated portion 20a and the width ncd of the uncoated portion 20b of the electrode plate raw material 20, respectively.

[0140] The first cutting unit 300 may include a plurality of upper cutting tools 310 and a plurality of lower cutting tools 320, each having a cutting width corresponding to the width (cd1+ncd1) of the divided electrode plate 21.

[0141] Multiple upper dividing cutters 310 and multiple lower dividing cutters 320 may be included in the vertical direction ( Figure 3 The upper dividing tool 320 and the lower dividing tool 310 are a pair of cutting tools in the Z-axis direction, and the upper dividing tool 310 and the lower dividing tool 320 can rotate in contact with each other to form a cutting point.

[0142] Multiple upper dividing cutters 310 can be arranged via upper spacers 315 in the width direction of the electrode plate raw material 20. Figure 3 The multiple lower dividing cutters 320 are spaced apart from each other in the Y-axis direction, and can be arranged to be spaced apart from each other in the width direction of the electrode plate raw material 20 by the lower spacer 325.

[0143] Therefore, the first cutting unit 300 can be formed in the width direction of the electrode plate raw material 20. Figure 3Multiple cutting points spaced apart from each other in the Y-axis direction of the electrode plate raw material 20, and pairs of cutting points adjacent to each other on the left and right sides in the width direction of the electrode plate raw material 20, can correspond to a segmented electrode plate 21.

[0144] For example, the distance between pairs of cutting points of the first cutting unit 300 can be equal to the sum of the width cd1 of the coated portion 20a-1 and the width ncd1 of the uncoated portion 20b-1 of the divided electrode plate 21 (i.e., cd1+ncd1).

[0145] Accordingly, the electrode plate raw material 20 supplied to the first cutting unit 300 can be cut into multiple divided electrode plates 21 by multiple upper dividing cutters 310 and multiple lower dividing cutters 320, and the remaining part of the electrode plate raw material 20 can be scrapped except for the multiple divided electrode plates 21.

[0146] refer to Figure 1 and Figure 8 The secondary cutting of multiple segmented electrode plates 21 (step S300) is an operation at the second cutting unit 500 to cut the multiple segmented electrode plates 21 cut and discharged from the first cutting unit 300 to the required width (cd2+ncd2).

[0147] For example, multiple segmented electrode plates 21 supplied from the first cutting unit 300 to the second cutting unit 500 can be moved upward and downward (relative to) the electrode plate separating unit 400. Figure 5 The material is classified in the Z-axis direction and then supplied to the second cutting unit 500.

[0148] refer to Figure 1 and Figure 5 According to an embodiment of the present disclosure, the electrode plate separation unit 400 can alternately classify a plurality of segmented electrode plates 21 cut and discharged from the first cutting unit 300 in different directions and supply them to the second cutting unit 500.

[0149] For example, the electrode plate separating unit 400 may include an upper roller 410 and a lower roller 420. Multiple segmented electrode plates 21 cut and discharged from the first cutting unit 300 can be moved upwards and downwards (relative to each other) via the upper roller 410 and lower roller 420 of the electrode plate separating unit 400. Figure 5 Classification based on the Z-axis direction.

[0150] For example, multiple segmented electrode plates 21 cut and discharged from the first cutting unit 300 can be in the width direction ( Figure 5 The rows are arranged in multiple lines from right to left along the Y-axis.

[0151] For example, multiple segmented electrode plates 21a in odd-numbered rows can be sorted upwards by the upper roller 410, and multiple segmented electrode plates 21b in even-numbered rows can be sorted downwards by the lower roller 420.

[0152] According to an embodiment of the present disclosure, the electrode plate slitting apparatus 1 can classify a plurality of slit electrode plates 21 in different directions by an electrode plate separation unit 400, and supply the plurality of slit electrode plates 21 to a second cutting unit 500. Accordingly, the second cutting unit 500 can individually adjust the slitting width of each of the plurality of slit electrode plates 21a and the plurality of slit electrode plates 21b, thereby minimizing slitting defects.

[0153] refer to Figure 1 , Figure 4 and Figure 6 According to an embodiment of the present disclosure, the second cutting unit 500 performs a slitting process to cut a plurality of segmented electrode plates 21a and a plurality of segmented electrode plates 21b supplied from the electrode plate separation unit 400 to a preset width (cd2+ncd2).

[0154] The second cutting unit 500 may include multiple cutting lines 510 and 520 for cutting multiple segmented electrode plates 21a and multiple segmented electrode plates 21b that have been sorted and supplied by the electrode plate separation unit 400 in different directions.

[0155] For example, the second cutting unit 500 may include an upper cutting line 510 and a lower cutting line 520. The upper cutting line 510 cuts a plurality of segmented electrode plates 21a in odd-numbered rows supplied by the upper roller 410 of the electrode plate separation unit 400, and the lower cutting line 520 cuts a plurality of segmented electrode plates 21b in even-numbered rows supplied by the lower roller 420 of the electrode plate separation unit 400.

[0156] The upper slitting line 510 may include a pair of coating-side cutters 511a and 513a that cut one side of the coated portion 20a-1 of the multiple divided electrode plates 21a in odd-numbered rows, and a pair of uncoated-side cutters 511b and 513b that cut one side of the uncoated portion 20b-1 of the multiple divided electrode plates 21a in odd-numbered rows.

[0157] The pair of coating side cutters 511a and 513a of the upper tangent 510 can be included in the vertical direction ( Figure 6 The pair of upper coating side tool 511a and lower coating side tool 513a in the Z-axis direction.

[0158] The uncoated side cutters 511b and 513b of the upper tangent 510 may be included in the vertical direction ( Figure 6The pair of uncoated upper side tool 511b and uncoated lower side tool 513b in the Z-axis direction.

[0159] The coated side cutters 511a and 513a of the upper tangent 510 and the uncoated side cutters 511b and 513b can be driven and controlled independently.

[0160] For example, the pair of side-coating cutters 511a and 513a can be coated in the vertical direction ( Figure 6 The coated side drive units 512a and 514a are connected to each other in the Z-axis direction, respectively, and the uncoated side cutters 511b and 513b can be connected in the vertical direction ( Figure 6 The uncoated side drive units 512b and 514b are connected to each other on the Z-axis direction.

[0161] For example, the coated side drive units 512a and 514a and the uncoated side drive units 512b and 514b may each include a servo motor that can be individually controlled by the control unit 800, and the coated side drive units 512a and 514a and the uncoated side drive units 512b and 514b may be arranged in the width direction ( Figure 6 It reciprocates on a guide rail extending along the Y-axis.

[0162] For example, the coating-side drive units 512a and 514a and the uncoated-side drive units 512b and 514b can respectively rotate the coating-side cutters 511a and 513a and the uncoated-side cutters 511b and 513b individually in the width direction. Figure 6 It reciprocates along the Y-axis.

[0163] For example, a pair of coated side cutters 511a and 513a can rotate in contact with each other to form a cutting point, and a pair of uncoated side cutters 511b and 513b can also rotate in contact with each other to form a cutting point.

[0164] The cutting points of the coated side cutters 511a and 513a are separated from the cutting points of the uncoated side cutters 511b and 513b in the width direction. Figure 6 The distance in the Y-axis direction can be set to be equal to the required slitting width (cd2+ncd2) of the multiple segmented electrode plates 21a in the odd-numbered rows.

[0165] For example, the pair of coated side drive units 512a and 514a and the pair of uncoated side drive units 512b and 514b can be driven and controlled by the control unit 800 in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0166] Therefore, when multiple segmented electrode plates 21a in odd-numbered rows are in the width direction ( Figure 6 When the electrode plate 21a is tilted in the Y-axis direction and supplied to the upper slitting line 510, the pair of coated side drive units 512a and 514a and the pair of uncoated side drive units 512b and 514b can move in the tilting direction of the slitting electrode plate 21a under the drive and control of the control unit 800 to perform slitting.

[0167] Accordingly, even when multiple segmented electrode plates 21a in odd-numbered rows are tilted in the width direction and supplied to the upper tangent line 510, the segmented electrode plates 21a can be segmented such that the coated portion 20a-2 and the uncoated portion 20b-2 have the required widths cd2 and ncd2, respectively.

[0168] refer to Figure 1 , Figure 4 and Figure 6 The lower cutting line 520 may include coating-side cutters 521a and 523a that cut one side of the coated portion 20a-1 of the multiple divided electrode plates 21b in even-numbered rows, and uncoated-side cutters 521b and 523b that cut one side of the uncoated portion 20b-1 of the multiple divided electrode plates 21b in even-numbered rows.

[0169] The coating side cutters 521a and 523a of the lower tangent 520 may be included in the vertical direction ( Figure 6 The pair of upper coating side tool 521a and lower coating side tool 523a in the Z-axis direction.

[0170] The uncoated side cutters 521b and 523b of the lower tangent 520 may be included in the vertical direction ( Figure 6 The pair of uncoated upper side tool 521b and uncoated lower side tool 523b in the Z-axis direction.

[0171] The coated side cutters 521a and 523a and the uncoated side cutters 521b and 523b of the lower tangent 520 can be driven and controlled independently.

[0172] For example, the pair of side-coating cutters 521a and 523a can be coated in the vertical direction ( Figure 6 The coated side drive units 522a and 524a are connected to each other in the Z-axis direction, respectively, and the uncoated side cutters 521b and 523b can be connected in the vertical direction ( Figure 6 The uncoated side drive units 522b and 524b are connected to each other on the Z-axis direction.

[0173] For example, the coated side drive units 522a and 524a and the uncoated side drive units 522b and 524b may each include a servo motor that can be individually controlled by the control unit 800, and the coated side drive units 522a and 524a and the uncoated side drive units 522b and 524b may be arranged in the width direction ( Figure 6 It reciprocates on a guide rail extending along the Y-axis.

[0174] For example, the coating-side drive units 522a and 524a, along with the uncoated-side drive units 522b and 524b, can individually rotate the coating-side cutters 521a and 523a and the uncoated-side cutters 521b and 523b in the width direction, respectively. Figure 6 It reciprocates along the Y-axis.

[0175] For example, a pair of coated side cutters 521a and 523a can rotate in contact with each other to form a cutting point, and a pair of uncoated side cutters 521b and 523b can also rotate in contact with each other to form a cutting point.

[0176] The cutting points of the coated side cutters 521a and 523a are separated from the cutting points of the uncoated side cutters 521b and 523b in the width direction. Figure 6 The distance in the Y-axis direction can be set to be equal to the required slitting width (cd2+ncd2) of the multiple segmented electrode plates 21b in even rows.

[0177] For example, the pair of coated side drive units 522a and 524a and the pair of uncoated side drive units 522b and 524b can be driven and controlled by the control unit 800 in the width direction ( Figure 6 It reciprocates along the Y-axis.

[0178] Therefore, when multiple segmented electrode plates 21b in even-numbered rows are in the width direction ( Figure 6 When the electrode plate 21b is tilted in the Y-axis direction and supplied to the lower slitting line 520, the pair of coated side drive units 522a and 524a and the pair of uncoated side drive units 522b and 524b can move in the tilting direction of the slitting electrode plate 21b under the drive and control of the control unit 800 to perform slitting.

[0179] Accordingly, even when multiple segmented electrode plates 21b in an even row are tilted in the width direction and supplied to the lower tangent line 520, the segmented electrode plates 21b can be segmented such that the coated portion 20a-2 and the uncoated portion 20b-2 have the required widths cd2 and ncd2, respectively.

[0180] refer to Figure 1 and Figure 8 The detection of the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b supplied to the second cutting unit 500 (step S400) is performed by the sensor unit 600 detecting the operation of the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b supplied to the second cutting unit 500.

[0181] For example, sensor unit 600 can detect the boundary lines between the coated portions 20a-1 and uncoated portions 20b-1 of multiple segmented electrode plates 21a and 21b, and transmit the boundary line information as a detection signal to control unit 800. Control unit 800 can then determine the boundary lines based on the detection signal from sensor unit 600, corresponding to the boundary lines in the width direction of the multiple segmented electrode plates 21a and 21b. Figure 4 The degree of tilt along the Y-axis (in the middle) is used to drive and control the second cutting unit 500.

[0182] The sensor unit 600 may include an upper sensor unit 610 configured to detect the segmented electrode plate 21a supplied to the upper slit line 510 and a lower sensor unit 620 configured to detect the segmented electrode plate 21b supplied to the lower slit line 520.

[0183] For example, the upper sensor unit 610 can detect multiple segmented electrode plates 21a in odd-numbered rows that are sorted from the upper roller 410 and supplied to the upper slitting line 510, and the lower sensor unit 620 can detect multiple segmented electrode plates 21b in even-numbered rows that are sorted from the lower roller 420 and supplied to the lower slitting line 520.

[0184] The upper sensor unit 610 can detect the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21a in odd-numbered rows, and transmit the detection signal to the control unit 800. The lower sensor unit 620 can detect the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21b in even-numbered rows, and transmit the detection signal to the control unit 800.

[0185] For example, the upper sensor unit 610 and the lower sensor unit 620 may each include a CCD camera, but various vision devices capable of detecting the boundary lines between the coated portions 20a-1 and the uncoated portions 20b-1 of the multiple segmented electrode plates 21a and the multiple segmented electrode plates 21b can be used.

[0186] refer to Figure 1 and Figure 8The control of the second cutting unit 500 (step S500) is the operation in which the control unit 800 receives information related to the plurality of split electrode plates 21a and the plurality of split electrode plates 21b detected by the sensor unit 600.

[0187] For example, due to slitting width defects in the first cutting unit 300 or slurry coating width errors in the process of forming the coated portion, the plurality of segmented electrode plates 21a and 21b supplied to the second cutting unit 500 may have width directions ( Figure 6 It tilts to one side along the Y-axis direction.

[0188] For example, the sensor unit 600 can detect the boundary line between the coated portion 20a-1 and the uncoated portion 20b-1 of the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b, and transmit the boundary line information to the control unit 800.

[0189] The control unit 800 can determine the width direction of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b based on the error of the boundary line detected by the sensor unit 600. Figure 1 The tilt in the Y-axis direction is compensated for and the cutting position of the second cutting unit 500 is controlled.

[0190] Therefore, even when the multiple segmented electrode plates 21a and multiple segmented electrode plates 21b are in the width direction ( Figure 1 When the electrode plates are tilted to one side in the Y-axis direction and are improperly supplied to the second cutting unit 500, the control unit 800 can also compensate and adjust the cutting position of the second cutting unit 500 so that the multiple divided electrode plates 21a and multiple divided electrode plates 21b are accurately cut to the required width by the second cutting unit 500.

[0191] refer to Figure 1 and Figure 8 The alignment of the electrode plate raw material 20 supplied to the first cutting unit 300 (step S600) is wherein the control unit 800 receives information related to the plurality of divided electrode plates 21a and the plurality of divided electrode plates 21b detected by the sensor unit 600 and controls the operation of the alignment unit 200.

[0192] For example, the control unit 800 can receive information detected by the sensor unit 600 related to the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b, and determine the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b in the width direction ( Figure 4 The tilt along the Y-axis.

[0193] The control unit 800 can determine the tilt of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b in the width direction, and drive and control the alignment unit 200 in the direction opposite to the tilt of the plurality of segmented electrode plates 21a and the plurality of segmented electrode plates 21b.

[0194] The control unit 800 can adjust the electrode plate raw material 20 supplied to the first cutting unit 300 in the width direction via the alignment unit 200. Figure 1 The position on the Y-axis (in the middle) is used to further improve the accuracy of the cutting width in the second cutting unit 500.

[0195] The coating process includes a rolling process to increase adhesion to the electrode current collector and increase the capacity density of the active material. The wound electrode plate can be dried and then cut to a predetermined width for use by a slitting device.

[0196] The following problems exist in existing slitting devices: due to width errors in the coated portion, the widths of the coated and uncoated portions of the electrode plate supplied to the slitting device are unevenly distributed during slitting. Furthermore, since the width spacing between the cutters of the slitting device is fixed based on spacers, it is difficult to adjust the slitting position of the electrode plate even if slitting defects exist.

[0197] According to the embodiments, slitting defects can be minimized by individually adjusting the slitting width of the coated and uncoated portions of the electrode plate, and the accuracy of slitting the electrode plate can be improved by aligning and correcting the electrode plate during the slitting process.

[0198] However, the effects of this disclosure are not limited to those described above, and those skilled in the art will clearly understand from the above description other effects not mentioned.

[0199] Although the present disclosure has been described above with reference to limited embodiments and accompanying drawings, the present disclosure is not limited thereto, and various modifications and changes will be possible for those skilled in the art without departing from the spirit of the present disclosure and the equivalents of the claims.

[0200] Example embodiments have been disclosed herein, and while specific terminology is used, it is used and interpreted in a general and descriptive sense only and is not intended to be limiting. In some instances, features, characteristics, and / or elements described in connection with specific embodiments may be used alone or in combination with features, characteristics, and / or elements described in connection with other embodiments, as will be apparent to those skilled in the art as of the date of filing of this application, unless specifically instructed otherwise. Accordingly, those skilled in the art will understand that various changes in form and detail may be made without departing from the spirit and scope of the invention as set forth in the claims.

Claims

1. An electrode plate slitting device, comprising: The first cutting unit is configured to cut the supplied electrode plate raw material into multiple segmented electrode plates; The second cutting unit is configured to cut the plurality of segmented electrode plates; The sensor unit is configured to detect the plurality of segmented electrode plates supplied to the second cutting unit, thereby obtaining detected information related to the plurality of segmented electrode plates; as well as The control unit is configured to receive the detected information relating to the plurality of segmented electrode plates and to control the drive of the second cutting unit.

2. The electrode plate slitting device according to claim 1, wherein: The electrode plate raw material has multiple coated portions and multiple uncoated portions that alternate and repeat in the width direction of the electrode plate raw material, and Each of the plurality of segmented electrode plates includes one coated portion and one uncoated portion of the plurality of coated portions.

3. The electrode plate slitting device according to claim 1, wherein: The first cutting unit includes a plurality of dividing blades, each of which has a cutting width corresponding to the width of each of the plurality of divided electrode plates, and The plurality of dividing cutters are spaced apart from each other, and spacers are between the plurality of dividing cutters.

4. The electrode plate slitting device according to claim 1, wherein: The electrode plate raw material has multiple coated portions and multiple uncoated portions. The sensor unit is further configured to detect the boundary line between a coated portion and an uncoated portion of one of the plurality of coated portions of each of the plurality of segmented electrode plates, and The control unit is further configured to compensate for, drive, and control the second cutting unit based on the error of the boundary line detected by the sensor unit.

5. The electrode plate slitting device according to claim 1, wherein: Before being cut by the second cutting unit, the plurality of segmented electrode plates are alternately separated in different directions, and The second cutting unit includes multiple slitting lines arranged along the path where the multiple segmented electrode plates are separated.

6. The electrode plate slitting device according to claim 5, wherein, Each of the plurality of tangent lines includes: A coating-side cutter is configured to slit one side of the coating portion of each of the plurality of segmented electrode plates; and An uncoated side cutter is configured to cut one side of the uncoated portion of each of the plurality of segmented electrode plates.

7. The electrode plate slitting device according to claim 6, wherein, The coated side cutter and the uncoated side cutter are driven and controlled independently.

8. The electrode plate slitting device according to claim 5, wherein, The sensor unit is provided as a plurality of sensor units, the plurality of sensor units being configured to detect the plurality of segmented electrode plates supplied to the plurality of slit lines respectively.

9. The electrode plate slitting apparatus according to any one of claims 1 to 8, further comprising: The alignment unit is configured to adjust the alignment of the supplied electrode plate raw material.

10. The electrode plate slitting device according to claim 9, wherein, The alignment unit is further configured to adjust the alignment of the supplied electrode plate raw material based on the information related to the plurality of segmented electrode plates detected by the sensor unit.

11. A method for cutting electrode plates, comprising: The electrode plate raw materials are supplied to the first cutting unit; The first cutting unit cuts the electrode plate raw material into multiple segmented electrode plates. The plurality of segmented electrode plates are supplied to the second cutting unit; The plurality of segmented electrode plates are cut using the second cutting unit; The plurality of segmented electrode plates supplied to the second cutting unit are detected by a sensor unit; and The control unit controls the drive of the second cutting unit based on information related to the plurality of segmented electrode plates detected by the sensor unit.

12. The electrode plate cutting method according to claim 11, wherein: The electrode plate raw material has multiple coated portions and multiple uncoated portions arranged alternately and repeatedly in the width direction of the electrode plate raw material, and Each of the plurality of segmented electrode plates includes one coated portion and one uncoated portion of the plurality of coated portions.

13. The electrode plate cutting method according to claim 11, wherein: The first cutting unit includes a plurality of dividing blades, each of which has a cutting width corresponding to the width of each of the plurality of divided electrode plates, and The plurality of dividing cutters are arranged to be spaced apart from each other, with spacers between the plurality of dividing cutters.

14. The electrode plate cutting method according to claim 11, further comprising: The sensor unit is used to detect the boundary line between the coated and uncoated portions of each of the plurality of segmented electrode plates; and The second cutting unit is compensated for, driven, and controlled based on the error of the boundary line detected by the sensor unit.

15. The electrode plate cutting method according to claim 11, further comprising: The plurality of segmented electrode plates are alternately separated in different directions to obtain separated segmented electrode plates, and the separated segmented electrode plates are supplied to the second cutting unit, wherein the second cutting unit includes a plurality of slitting lines respectively arranged on the plurality of segmented electrode plates along the path on which they are separated.

16. The electrode plate cutting method according to claim 15, further comprising: One side of the coated portion of each of the plurality of segmented electrode plates is cut using a coating-side cutter; and One side of the uncoated portion of each of the plurality of segmented electrode plates is cut using an uncoated side cutter.

17. The electrode plate cutting method according to claim 16, further comprising: The coated side cutter and the uncoated side cutter are driven and controlled independently.

18. The electrode plate cutting method according to claim 15, wherein, The detection includes: Multiple sensor units are used to detect the multiple segmented electrode plates supplied to the multiple slitting lines.

19. The electrode plate cutting method according to any one of claims 11 to 18, further comprising: The alignment of the electrode plate raw material supplied to the first cutting unit is adjusted by the alignment unit.

20. The electrode plate cutting method according to claim 19, wherein, The alignment unit is further configured to adjust the alignment of the electrode plate raw materials supplied to the first cutting unit based on the information related to the plurality of segmented electrode plates detected by the sensor unit.

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