Device for marknig reference point and rollpmap producing device using the same

Abstract

The present invention relates to a marking device for marking a reference point on a multi-lane electrode in which a plurality of electrode lanes are arranged along the width direction. The marking device comprises: a first marking device for marking a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of the multi-lane electrode; a second marking device for marking a reference point on an unmarked portion of an electrode lane other than the electrode lane located at one end or an electrode lane other than the electrode lane located at both ends while moving along the width direction; and a control unit for controlling the operation of the first marking device and the second marking device. The present invention also provides a roll map generating device using the reference point marking device.

Description

Technology Field

[0001] The present invention relates to a reference point marking device capable of efficiently marking a reference point on each electrode lane when moving a multi-lane electrode equipped with a plurality of electrode lanes.

[0002] In addition, the present invention relates to a roll map generating device using such a reference point marking device. Background Technology

[0004] With the technological development and increasing demand for mobile devices, the demand for rechargeable batteries is also rising rapidly. In particular, lithium-ion batteries are widely used as an energy source for various electronic products as well as mobile devices, due to their high energy density and operating voltage, as well as their excellent storage and lifespan characteristics.

[0005] The so-called electrode process for manufacturing electrodes of a lithium secondary battery consists of a coating process in which an active material and a predetermined insulating material are applied to the surface of a metal electrode plate, which is a current collector, to form a positive electrode and a negative electrode, a roll press process in which the coated electrode is rolled, and a slitting process in which the rolled electrode is cut according to dimensions.

[0006] Electrodes manufactured in the electrode process have electrode tabs formed through a notching process, and an electrode assembly is formed by interposing a separator between the anode and cathode. Subsequently, the secondary battery is formed through an assembly process in which this electrode assembly is stacked, folded, or wound, packaged into pouches or cans, and electrolyte is injected. Afterward, the assembled secondary battery undergoes an activation process that imparts battery characteristics through charging and discharging to become the final finished secondary battery product.

[0007] In the aforementioned electrode process, if breakage or defects occur in the electrode, the broken or defective portion may be removed and the electrode connected using connecting tape. Alternatively, to maintain electrode quality, the beginning or end sections of the electrode with uneven quality may be removed. In such cases, after removing and connecting the electrode, the operator arbitrarily inputs the length of the cut electrode (electrode loss amount) into a control unit. However, since the operator manually measures and inputs the electrode loss amount, the actual consumed electrode loss is inaccurate. Furthermore, the input electrode loss amount varies from operator to operator.

[0008] In this case, while the subsequent process can detect the connecting tape to determine that the electrode has been severed and connected, the amount of electrode loss cannot be accurately determined as it depends on the operator's input. If the amount of severed electrode loss is inaccurate, the position coordinates of the electrode change during the subsequent process, making it impossible to perform subsequent processing accurately at the desired location. Furthermore, when comparing and analyzing quality changes between each detailed process of the electrode manufacturing, the criteria vary depending on the amount of electrode loss, making it impossible to reliably compare quality based on the electrode's position.

[0009] Recently, roll maps are being used to display quality or defect data on a roll map bar that simulates an electrode in a roll-to-roll state. Since these roll maps are created for each detailed electrode process in the coating, roll press, and slitting processes, information regarding quality defects or electrode breakage in the preceding process is downloaded to verify this information, and the subsequent process verifies this to remove defects or perform necessary follow-up processing. However, if the amount of electrode loss is not accurately determined as described above, the electrode position data displayed on the roll map changes, making it impossible to accurately display data regarding quality or defect locations. Consequently, there is a risk that the subsequent process may be performed based on incorrect position coordinates when referencing the roll map.

[0011] Figure 1 is a schematic diagram showing that when loss occurs in the electrode, distortion occurs in the electrode lengthwise coordinates depending on the presence or absence of a reference point.

[0012] The upper drawing of FIG. 1 is a roll map (RM) that simulates the movement of an electrode moving in a roll-to-roll state between an unwinder (UW) and a rewinder (RW). Although many detailed data regarding quality and defects are visually displayed on the actual roll map (RM), FIG. 1 only shows the breakage of the electrode and the connecting tape (T) for convenience of explanation.

[0013] The roll map (RM) in the upper drawing of Fig. 1 is a simulation of an actual electrode, and various types of fractures occur in the actual electrode. When one of the detailed processes of the electrode process is carried out, electrode fracture occurs within that process (sub-process), and fractures of 50 meters and 60 meters are indicated on the roll map (RM). In addition, it is indicated that the electrode beginning section is removed by 30 meters in the process prior to entering that process, and the electrode end section is removed by 35 meters in the sub-process.

[0014] In this case, if the electrode removal portion (electrode loss portion) of the broken section or the electrode start and end sections is removed, only the connecting tape (T) connecting the broken sections remains, as shown in the drawing of the middle section of FIG. 1. That is, the drawing of the middle section of FIG. 1 becomes the actual shape of the electrode. In this drawing of the middle section, the position of the connecting tape (T) can be detected, for example, by a seam detection sensor. However, since the broken electrode or the removed electrode does not remain on the actual electrode, the amount of electrode loss, which is the length of the electrode removal portion (loss portion), cannot be determined. As described above, since the electrode removal portion is manually entered by the operator, it is difficult to know the exact amount of electrode loss.

[0015] In addition, if the amount of electrode loss cannot be determined, the roll map (RM) of the electrode process will take the form of the middle section of the drawing in Fig. 1, and the position coordinates on the roll map will also be distorted. The upper section of Fig. 1 is shown for convenience along with the connecting tape, assuming that the electrode breakage / removal length is known; however, when actual electrode loss occurs, it will take the form of the middle section of the drawing in Fig. 1.

[0016] The lower drawing of FIG. 1 is a drawing showing that coordinate distortion of the roll map (RM) is prevented by introducing a reference point.

[0017] In the roll map (RM) at the bottom of FIG. 1, reference points (M1, M2, M3) are introduced at predetermined intervals to indicate the electrode loss area. The number and interval of the reference points (M1, M2, M3) can be applied differently depending on the length or specifications of the electrode. In FIG. 1, assuming an electrode with a length of 1200 meters, reference points (M1, M2, M3) are marked at the 300, 600, and 900 meter points, respectively. If reference points (M1, M2, M3) are marked on the actual electrode as described above and the reference points are measured when electrode loss occurs, the interval of the reference points changes, and the amount of electrode loss can be easily determined based on the change value. Once the amount of electrode loss is determined in this way, the reference points (M1, M2, M3) and the electrode loss length can be displayed together, as shown in the roll map (RM) at the bottom of FIG. 1. Accordingly, the longitudinal dimension of the electrode with the loss length reflected (absolute coordinates) and the longitudinal dimension of the electrode without the loss length reflected (relative coordinates) can be displayed together on a single roll map.

[0018] In this way, by introducing reference points to the electrodes, the amount of electrode loss can be determined by comparing the reference point position before the variation (set reference point position) with the measured reference point position based on the variation in reference point intervals, and this can be reflected on the roll map.

[0020] Meanwhile, recently, multi-lane electrodes in which multiple electrode lanes are arranged along the width direction are being actively developed to meet the increased demand for pouch or cylindrical batteries used in large automotive batteries, or small batteries used in small electric devices. The multi-lane electrode is formed by repeatedly arranging a coating portion where an electrode active material is coated and an uncoated portion in the width direction on a single electrode plate (current collector). After undergoing the coating process and roll press process described above, the multi-lane electrode is cut into individual electrode lanes in a slitting process.

[0021] Figure 2 is a schematic diagram showing a reference point on the electrode of a single electrode lane.

[0022] The arrow in the drawing indicates the direction of travel of the electrode. The electrode (1) has a blank area (1a) formed on both sides of a single retaining part (1b). Therefore, it was sufficient for a conventional reference point marking machine (2) to mark a reference point (M) on one blank area or on both blank areas (1a) of the electrode. However, such a conventional reference point marking machine (2) was unsuitable for marking reference points on multi-lane electrodes, which are effective for electrode productivity. In order to mark reference points on each of the multiple electrode lanes of a multi-lane electrode, multiple marking machines are required. However, as the number of marking machines increases, manufacturing costs rise and the installation process becomes more complex. In addition, the number of optical components required for the marking machine also increases, further increasing manufacturing costs.

[0024] Therefore, in order to mark reference points on recent multi-lane electrodes or multi-lane electrodes, it is desirable to develop a technology that can efficiently mark reference points while reducing the number of marking machines. Prior art literature

[0026] Republic of Korea Registered Patent Publication No. 10-601567 The problem to be solved

[0027] The present invention aims to provide a reference point marking device with a simple structure capable of efficiently marking a reference point on a multi-lane electrode equipped with a plurality of electrode lanes.

[0028] In addition, another objective of the present invention is to provide a roll map generating device capable of effectively displaying reference point information and information regarding electrode defects on a roll map using the reference point marking device. means of solving the problem

[0030] The reference point marking device of the present invention for solving the above problem is a marking device for marking a reference point on a multi-lane electrode in which a plurality of electrode lanes are arranged along the width direction,

[0031] It includes: a first marking device for marking a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of the above-mentioned electrode lane; a second marking device for marking a reference point on an unmarked portion of an electrode lane other than the electrode lane located at one end or an electrode lane other than the electrode lane located at both ends while moving along the width direction; and a control unit for controlling the operation of the first marking device and the second marking device.

[0032] The first marking device is a one-sided marking device that marks a reference point on an unmarked portion of an electrode lane located at one end in the width direction of the electrode lane, and the second marking device can mark a reference point on each of the unmarked portions of a plurality of electrode lanes excluding the electrode lane located at the one end.

[0033] The first marking device is composed of a one-side marking device and a other-side marking device that mark a reference point on the blank portion of an electrode lane located at one end and the other end in the width direction of the electrode lane, respectively, and the second marking device may mark a reference point on the blank portion of one or more electrode lanes arranged between the electrode lanes located at the one end and the other end.

[0034] As an example, a guide axis is arranged along the electrode width direction on the above-mentioned darean electrode, the first marking device and the second marking device are coupled to the guide axis, and the second marking device may be installed to be movable along the guide axis.

[0035] The first marking device may be capable of moving in the width direction along the guide axis in response to the change in width when marking a reference point for a multi-lane electrode of a different width.

[0036] When the above-mentioned multilane electrode moves along the longitudinal direction, the first marking device and the second marking device can mark reference points at predetermined intervals along the longitudinal direction of the multilane electrode on the unmarked portions of each electrode lane.

[0037] When the second marking machine moves along the width direction and marks each of the multiple electrode lanes, the marking path may be formed as a diagonal path that slopes backward in the electrode length direction due to the movement speed of the multiple lane electrodes in the length direction.

[0038] The above-mentioned Darein electrode is a double-sided electrode in which an electrode active material is coated on the upper surface and the lower surface, respectively, and the above-mentioned first marking device and second marking device may be installed on the upper surface and the lower surface of the above-mentioned Darein electrode, respectively.

[0039] The above-mentioned marked reference point may include coordinates of the reference point along the longitudinal direction of the multi-lane electrode or sequence information of the reference point, and sequence information of each electrode lane along the electrode width direction.

[0040] The above reference point marking device may further include a position measuring device that acquires the longitudinal position of the electrode according to the amount of rotation of the unwinder or rewinder as coordinate data when the electrode moves along the longitudinal direction in a roll-to-roll state between the unwinder and the rewinder, and the first marking device and the second marking device may mark the reference point based on the coordinate data.

[0041] The first marking machine above can mark defective locations and / or defective sections of the multi-leg electrode instead of or together with the reference point marking.

[0042] At least one defect inspection device is positioned prior to the first marking device position, which can inspect a multi-lane electrode moving in a roll-to-roll state to acquire inspection data regarding defects and acquire coordinate data of the electrode regarding the defect location and / or defect section for which the inspection data was acquired in conjunction with the position measuring device, and the first marking device can mark the defect location and / or defect section on the unmarked portion of one or both ends in the width direction of the multi-lane electrode based on the coordinate data received from the defect inspection device.

[0043] The control unit can determine the time when the electrode portion of the defective location and / or defective section arrives at the first marking unit based on the distance between the defect inspection unit and the first marking unit and the moving speed of the multi-leg electrode, and control the first marking unit to mark the defective location and / or defective section at the time of arrival.

[0044] A roll map generating device as another aspect of the present invention comprises: a position measuring device that acquires the longitudinal position of a darain electrode as coordinate data according to the amount of rotation of the unwinder or rewinder when the darain electrode moves in a roll-to-roll state between an unwinder and a rewinder; and a marking device that is linked with the position measuring device and marks reference points at predetermined intervals on the darain electrode along the longitudinal direction of the darain electrode. The apparatus includes a roll map generating unit that acquires coordinate data of the electrode lengthwise position and reference point in conjunction with the position measuring device and the marking device, and generates a roll map by displaying the coordinate data on a roll map that simulates an electrode moving in a roll-to-roll state. The marking device includes a first marking device that marks a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of the multi-lane electrode, and a second marking device that marks a reference point on an unmarked portion of the remaining electrode lane excluding the electrode lane located at one end or the electrode lane located at both ends while moving along the width direction. The roll map generating unit can generate a roll map of the multi-lane electrode and a roll map of each individual electrode lane constituting the multi-lane electrode based on the coordinate data of the reference points marked by the first and second marking devices.

[0045] At least one defect inspection device is positioned prior to the first marking device position, which can inspect the above-mentioned multi-leg electrode to acquire inspection data regarding defects and acquire coordinate data of the electrode regarding the defect location and / or defect section for which the inspection data was acquired in conjunction with the above-mentioned position measuring device, and the first marking device marks the defect location and / or defect section on the unmarked portion of one or both ends in the width direction of the above-mentioned multi-leg electrode based on the coordinate data received from the defect inspection device, and the roll map generation unit can display the coordinate data of the reference point and the coordinate data of the defect location and / or defect section together on the roll map. Effects of the invention

[0047] According to the present invention, a reference point can be marked on all of a plurality of electrode lanes using a first marking device that marks a reference point on an electrode lane at one or both ends of a multi-lane electrode, and a second marking device that marks a reference point on the remaining electrode lane.

[0048] Therefore, the number of marking machines required for reference point marking is significantly reduced, thereby greatly lowering manufacturing costs. Consequently, the number of expensive optical components (e.g., vision cameras, lighting devices, etc.) required for each marking machine is also reduced, allowing for further reduction in manufacturing costs.

[0049] In addition, the first marking device can also mark electrode defects in addition to reference points, so that both reference points and electrode defects can be marked on the electrode.

[0050] Furthermore, according to the present invention, a roll map simulating a darain electrode can be implemented based on reference point coordinate information obtained from the reference point marking device. In addition to the reference point information, information regarding electrode defects can also be simultaneously displayed on the roll map. Accordingly, data related to the quality defects of the darain electrode can be easily and visually identified at a glance in relation to the reference point.

[0051] In addition, since the roll map marked with the reference point can be referenced during quality, defect management, and subsequent process processing in each detailed process of the electrode process, processing or defect removal in subsequent processes can be performed accurately. Brief explanation of the drawing

[0053] Figure 1 is a schematic diagram showing that when loss occurs in the electrode, distortion occurs in the electrode lengthwise coordinates depending on the presence or absence of a reference point. Figure 2 is a schematic diagram showing a reference point on the electrode of a single electrode lane. FIG. 3 is a schematic diagram of a reference point marking device of the first embodiment of the present invention. FIG. 4 is a schematic diagram showing the operation process of the first and second marking machines according to the first embodiment. FIG. 5 is a schematic diagram showing a reference point being marked on a darain electrode by the reference point marking device of the first embodiment. FIG. 6 is a schematic diagram of a reference point marking device of a second embodiment of the present invention. FIG. 7 is a schematic diagram showing the operation process of the first and second marking machines according to the second embodiment. FIG. 8 is a schematic diagram showing a reference point being marked on a darain electrode by a reference point marking device of the second embodiment. FIG. 9 is a schematic diagram of a reference point marking device of a third embodiment of the present invention. FIG. 10 is a schematic diagram showing marking by a reference point marking device of the third embodiment. FIG. 11 is a schematic diagram of a roll map generating device, which is another aspect of the present invention. FIG. 12 is a schematic diagram of a data visualization device included in a roll map generation unit. FIG. 13 is a schematic diagram showing a roll map of a multi-lane electrode and an individual electrode lane generated by the roll map generating device of the present invention. Specific details for implementing the invention

[0054] The detailed configuration of the present invention will be described below with reference to the attached drawings and various embodiments. The embodiments described below are presented as examples to aid in understanding the present invention, and the attached drawings are not drawn to actual scale to aid in understanding the invention, and the dimensions of some components may be exaggerated.

[0055] The present invention is capable of various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention.

[0057] The present invention relates to a marking device for marking reference points on a multi-lane electrode. Furthermore, the invention relates to a roll map generating device for generating a roll map using the marking device.

[0058] In this specification, a "darein electrode" refers to an "electrode in which a plurality of electrode lanes are arranged along the width direction." The width direction refers to the width direction of the darein electrode or the width direction of the current collector coated with an active material. On the darein electrode, a retaining portion coated with an active material and a retaining portion where the surface of the current collector is exposed without being coated with an active material are repeatedly arranged along the width direction. In a narrow sense, only the retaining portion may be referred to as an electrode lane. However, in a broad sense, the term "electrode lane" may be used to refer to the retaining portion combined with an uncoated portion manufactured as an electrode tab. In this specification, the retaining portion and the adjacent uncoated portion are defined as a single electrode lane.

[0059] Since non-retaining portions are arranged at each end of the multi-lane electrode, the number of non-retaining portions on the multi-lane electrode is one greater than the number of retaining portions. That is, if adjacent non-retaining portions and retaining portions are considered as one electrode lane, a multi-lane electrode having n electrode lanes has n retaining portions and n+1 non-retaining portions. Since retaining portions and non-retaining portions are arranged alternately on the multi-lane electrode and non-retaining portions are arranged at both ends of the multi-lane electrode, the form is such that non-retaining portions are arranged on both sides of a retaining portion when viewed from the perspective of a single retaining portion. In this specification, the "non-retaining portion of a single electrode lane" for which a reference point is marked refers to a non-retaining portion arranged on one side or the other side of the retaining portion. When a reference point is marked along the width direction from one side of the width of the multi-lane electrode, the non-retaining portion on one side relative to the retaining portion becomes the "non-retaining portion of the electrode lane." In this case, a reference point may not be marked on the non-retaining portion at the other end of the multi-lane electrode in the width direction. Conversely, when a reference point is marked along the width direction from the other side of the width of the multi-lane electrode, the unmarked area on the other side relative to the retaining part becomes the 'unmarked area of ​​the electrode lane'. In this case, a reference point may not be marked on the unmarked area at one end of the width direction of the multi-lane electrode.

[0060] In this specification, 'Darlane' includes two or more electrode lanes. However, for the sake of the effect of the present invention, it is preferable to include three or more electrode lanes. For example, if the Darlane electrode is equipped with two electrode lanes, a first marking device described below can mark a reference point on the blank portion of the electrode lane located on one side of the Darlane electrode. In this case, a second marking device moving along the width direction can mark a reference point on the blank portion of the electrode lane on the other side. However, in this case, two marking devices are arranged on two electrode lanes, and thus, it is less effective to view it as a reference point marking device for a true multilane or Darlane electrode intended by the present invention.

[0061] In the case where there are three electrode lanes, a first marking device reference point can be marked on the blank portion of the electrode lane at one end of the multi-lane electrode (first electrode lane), and a second marking device can mark a reference point on the blank portion of the remaining electrode lanes (second and third electrode lanes) while moving in the width direction. In this way, when three or more electrode lanes are provided, a single second marking device can mark reference points corresponding to two or more electrode lanes, so the effect of the present invention can be substantially achieved.

[0062] In addition, another first marking device may be installed on the electrode lane (third electrode lane) at the other end of the multi-lane electrode to mark a reference point. That is, a reference point may be marked by two first marking devices on the blank areas of the first electrode lane and the third electrode lane, respectively, and a movable second marking device may mark a reference point on the blank area of ​​the second electrode lane.

[0063] As the number of electrode lanes excluding the electrode lane at one end of the multi-lane electrode, or the number of electrode lanes excluding the electrode lanes at one end and the other end, increases, the utility of the second marking machine that marks reference points along the width direction will be said to increase further.

[0065] Reference point marking device

[0066] The reference point marking device of the present invention is a marking device for marking a reference point on a multi-lane electrode in which a plurality of electrode lanes are arranged along the width direction,

[0067] It includes: a first marking device for marking a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of the above-mentioned electrode lane; a second marking device for marking a reference point on an unmarked portion of an electrode lane other than the electrode lane located at one end or an electrode lane other than the electrode lane located at both ends while moving along the width direction; and a control unit for controlling the operation of the first marking device and the second marking device.

[0069] As described above, the multi-lane electrode of the present invention preferably comprises three or more electrode lanes. The technical concept of the present invention is that a marking device (first marking device) that does not move when marking a reference point marks a reference point on the blank portion of an electrode lane located at one or both ends in the width direction of the multi-lane electrode, and a second marking device moves in the width direction to mark a reference point on the blank portion of the remaining electrode lane. Accordingly, a reference point can be marked on the blank portion of the remaining electrode lane using a single second marking device without the need to install a separate marking device on each of the remaining electrode lanes.

[0070] In addition, when marking reference points with two types of marking machines (a first marking machine and a second marking machine), the reference point marked by the first marking machine can be used as a master reference point from the electrode coating process to the slitting process. Furthermore, since the first marking machine does not move during marking, marking of defective areas and / or defective sections of the electrode can be performed simultaneously in addition to marking reference points, as described below.

[0071] On the other hand, the second marking device independently marks reference points for each electrode lane and includes sequence information of the corresponding electrode lane and coordinate or sequence information of the reference point for each reference point, so it can serve as a judgment criterion or reference when creating a roll map for each electrode lane to evaluate or track quality.

[0072] The control unit controls the operation of the first and second marking units. The control unit may be a PLC control unit that controls the electrode transfer when the electrode is transferred in a roll-to-roll state between the unwinder (UW) and the rewinder (RW) during the electrode process. The control unit may be connected to a position measuring device (e.g., a rotary encoder) capable of acquiring the longitudinal position of the electrode according to the amount of rotation of the unwinder or rewinder as coordinate data. Accordingly, the control unit acquires the amount of rotation as coordinate data and can control the first and second marking units to mark a reference point at a specific longitudinal position when the multi-leg electrode moves. That is, when the electrode moves to a predetermined marking position in the longitudinal direction of the multi-leg electrode, the control unit can issue a reference point marking instruction to the first and second marking units. Additionally, when the multi-leg electrode moves, the control unit can repeatedly issue a reference point marking instruction to the first and second marking units at predetermined intervals along the longitudinal direction of the multi-leg electrode. In the control unit, information regarding the reference point marking position and the marking interval is set, and accordingly, the first and second marking devices can mark a reference point on the blank portion of the electrode lane.

[0073] Meanwhile, since the second marking machine moves along the width direction, its movement motion and speed can also be controlled by the control unit. If the control unit is a PLC control unit that controls electrode transport, it can control the movement speed of the multi-lane electrode in the longitudinal direction, and the control unit can also determine the movement speed of the second marking machine in conjunction with the movement speed. That is, the control unit can control the second marking machine so that a reference point is marked at a desired marking position by comprehensively considering the movement speed of the multi-lane electrode, the movement degree of the second marking machine, the reference point marking position, the marking interval, etc.

[0074] The control unit can also perform the function of controlling the first marking unit when the first marking unit marks a defect on an unmarked part of the electrode lane. That is, when the first marking unit marks a reference point or marks a defect, the control unit can control the first marking unit regarding which marking to prioritize or whether to perform both types of marking. When a predetermined defect inspection unit is installed for defect marking, the control unit can acquire coordinate data of the defect location or defect section by linking with the defect inspection unit and the position measuring unit, and can issue a defect marking instruction to the first marking unit based on this.

[0075] In addition, the control unit may acquire coordinate data regarding a reference point, coordinate data regarding a defective location or a defective section, and transmit it to a roll map generation unit. Based on this data, the roll map generation unit may generate a roll map of a multi-lane electrode or each individual electrode lane.

[0077] Hereinafter, specific embodiments of the reference point marking device of the present invention will be described with reference to the drawings.

[0079] (First embodiment)

[0080] FIG. 3 is a schematic diagram of a reference point marking device of the first embodiment of the present invention, FIG. 4 is a schematic diagram showing the operation process of the first and second marking devices according to the first embodiment, and FIG. 5 is a schematic diagram showing that a reference point (M) is marked on the darain electrode (10) by the reference point marking device (100) of the first embodiment.

[0081] In this embodiment, as shown in FIG. 5, a reference point (M) is marked on a multi-lane electrode (10) having, for example, eight electrode lanes. The multi-lane electrode (10) has a total of nine blank sections (11), including blank sections (11) on both ends in the width direction, and eight retaining sections (12).

[0082] Referring to FIGS. 3 and 4, the first marking device (20) is placed on the blank portion (11) of the electrode lane located at one end in the width direction (left end in FIG. 5) of the multi-lane electrode (10). The second marking device (30) marks a reference point (M) on the blank portion (11) of the remaining electrode lane, excluding the electrode lane at the one end in the width direction. Therefore, the reference point (M) is not marked on the blank portion (11) at the other end in the width direction (right end) of FIG. 5. At this time, the second marking device (30) marks the reference point (M) while moving from the left end in the width direction to the right end.

[0083] Meanwhile, it is also possible to mark a reference point (M) as the second marking device (30) moves from the right end to the left end of FIG. 5. In this case, the first marking device (20) can mark a reference point (M) on the blank portion (11) of the right end.

[0084] Referring to FIG. 3, the reference point marking device (100) of the present embodiment is configured to be positioned on the upper portion of the darain electrode (10) to mark a reference point (M) when the darain electrode (10) moves from the unwinder (UW) to the rewinder (RW) in a roll-to-roll state. The darain electrode (10) of FIG. 3 is a double-sided electrode in which an electrode active material is coated on the upper surface and the lower surface, respectively. Accordingly, a first and second marking device (20, 30) is installed on the upper surface of the darain electrode (10), and a first and second marking device (20', 30') is installed on the lower surface, respectively. However, it goes without saying that the present invention can also be applied to a single-sided electrode in which an active material is coated only on one surface of the darain electrode (10). In this case, the first and second marking devices (20, 30) are installed on the one surface.

[0085] As shown in FIG. 4, a guide shaft (R) is installed along the width direction on a lane electrode (10) that travels in the longitudinal direction. A first and second marking device (30) is coupled to this guide shaft (R). The second marking device (30) is installed to be movable along the guide shaft (R) and marks a reference point (M) on the blank portion (11) of a plurality of electrode lanes while moving along the width direction according to a signal from a control unit. If the electrode is a double-sided electrode, the guide shafts (R, R') can also be installed on the upper surface and the lower surface of the electrode, respectively.

[0086] As a marking machine, for example, an inkjet marking machine, a laser marking machine, or a punching marking machine may be used, but is not limited thereto. An appropriate marking machine may be selected and used within a range where the visibility of the reference point (M) is excellent and the maintenance part (12) is not damaged. In the case of a laser or punching marking machine, damage may be left on the blank part (11), so care must be taken when marking the reference point (M). However, as described below, when marking a defect with the first marking machine (20), the laser or punching marking machine may have better visibility.

[0087] The first marking machine (20) and the second marking machine (30) may be of the same type or different types. Preferably, using the same type of marking machine is advantageous for identifying the reference point (M) and uniformly managing the electrode process.

[0088] The marked reference point (M) may include the coordinates of the reference point (M) along the longitudinal direction of the multi-lane electrode or the sequence information of the reference point (M), and the sequence information of each electrode lane along the width direction of the multi-lane electrode. This information may be displayed in the form of a barcode, or in a form that combines numbers, Korean characters, English letters, etc. FIG. 5 shows an example of a reference point (M) that combines numbers and English letters. It should be noted that the reference point (M) is shown as an example for illustrative purposes and may not correspond to the order of each electrode lane, the order of the reference point (M), or the longitudinal coordinate values ​​shown in FIG. 5. For example, in the reference point (M) of 'F605', 'F6' represents the sequence information of the electrode lane. As shown below, the order of each electrode lane can be defined according to the English alphabet.

[0089] A 1~9 01~09 Lane

[0090] F 0~9 10~19 Lane

[0091] Y 0~9 20~29 Lane

[0093] If lanes are indicated using only numbers, the number of numbers to be displayed becomes long and the ability to distinguish them may be reduced; therefore, the lane order can be indicated by combining letters and numbers as described above. According to the above regulation, F06 represents electrode lane 16. Additionally, using letters allows for identifying that the beginning and end of the multi-lane electrode are reversed when the reference point (M) is recognized as inverted. That is, in a series of electrode processes including the coating process, roll press process, and slitting process, the beginning and end of the electrode are recognized as inverted depending on the winding and unwinding directions, such as when the end of the electrode roll of the preceding process becomes the beginning of the electrode roll of the subsequent process. In this case, if the reference point (M) is indicated using an alphabet, it is possible to identify which process it is when F is recognized as inverted, and the reference point (M) can be displayed on the roll map by reflecting this or by appropriately correcting it.

[0094] Additionally, the number '05' is sequential information for reference points (M) along the electrode length direction. As shown in FIG. 3, when the multi-lane electrode moves along the length direction, the first and second marking devices (20, 30) mark reference points (M) at predetermined intervals along the length direction of the multi-lane electrode (10) on the blank portion (11) of each electrode lane. Thus, the reference point (M) means that it is the fifth reference point (M5) marked along the length direction. For example, if the reference points (M) are marked at intervals of 100m, the number '05' indicates that the reference point (M5) is marked at a point 500m from the electrode end.

[0095] In this way, by using a reference point (M) composed of letters and numbers, the reference point coordinates or sequence information and the sequence information of the electrode lane can be identified at a glance. Of course, it is also possible to display the longitudinal coordinates directly as '500' instead of using sequence numbers such as '05'. Since such sequence numbers and coordinate relationships are input into the control unit or the roll map generation unit described later, the coordinate data of the reference point (M) can be easily obtained by identifying the reference point (M).

[0096] In this embodiment, an ink marking machine is applied as the first and second marking machines (20, 30). Referring to FIG. 4, the first and second marking machines (20, 30) are each equipped with a marking part (nozzle part) (23, 33) connected to an ink supply part (not shown). Additionally, the first and second marking machines are each equipped with a vision camera (21, 31) to distinguish and recognize the retaining part (12) and the blank part (11). The vision camera (21, 31) identifies the boundary between the retaining part (12) and the blank part (11) so that the marking part can mark at a predetermined marking position on the blank part (11). To enable the vision camera to easily identify the retaining part (12) and the blank part (11), the first and second marking machines are each equipped with a lighting device (22, 32). Optical components such as the vision camera and the lighting device are expensive. The present invention has the advantage of being able to mark reference points (M) on multiple electrode lanes with a single second marking device (30), thereby significantly reducing the number of expensive optical components.

[0097] Since the second marking device (30) moves along the width direction, it is necessary to set its range of movement. To this end, a limit sensor (not shown) may be provided. The limit sensor and the control unit (40) are linked, and the control unit (40) may regulate the range of movement of the second marking device (30) according to the position detected by the limit sensor. If necessary, the first marking device (20) or the second marking device (30) may be provided with a stopper (not shown) for collision prevention. In the event that the first and second marking devices (20, 30) collide due to an unforeseen cause, if a stopper made of an elastic material or a soft material (e.g., a urethane stopper) is attached to the side of the marking device, this stopper absorbs the impact and prevents damage to the marking device. Of course, other mechanical and / or electronic stopper mechanisms may also be provided on the marking device or on the guide shaft (R) coupled to the marking device.

[0098] Referring to FIG. 4, a first marking device (20) is positioned on the blank portion (11) of the electrode lane located at one end of the electrode lane (10), and a second marking device (30) is installed on a guide shaft (R) on the remaining electrode lane.

[0099] The first marking device (20) is, in principle, fixed and does not move when marking the reference point (M). However, if the width of the multi-lane electrode changes depending on the type of multi-lane electrode or the number of electrode lanes, the first marking device (20) can also be made movable to accommodate it. That is, when a multi-lane electrode with three electrode lanes is replaced with a multi-lane electrode with ten electrode lanes, the first marking device (20) can move in the width direction along the guide axis (R) in response to the change in width.

[0100] The movement mechanism of the second marking machine (30) or the first marking machine (20) along the guide axis (R) may employ a known linear movement mechanism. For example, the first and second marking machines may be equipped with a linear motor capable of linear movement along the guide axis (R). Additionally, the first and second marking machines may include an LM guide mechanism equipped with a bearing in the guided portion to reduce friction when moving along the guide axis (R). Since such a linear movement mechanism is known, a detailed description thereof will be omitted.

[0101] Referring again to FIG. 3, an electrode coater (C) and a drying oven (D) are arranged before the first and second marking machines (20, 30). That is, when marking a reference point (M) with the reference point marking device (100) of the present invention during the electrode coating process, it is necessary to perform this after the active material on the electrode has been dried. FIG. 3 illustrates that the reference point marking device (100) marks the reference point (M) simultaneously on the upper and lower surfaces of the electrode. However, depending on the factory equipment layout, the reference point marking on the upper and lower surfaces of the electrode may proceed sequentially. For example, the reference point marking device (100) may mark the reference point (M) on the upper surface after the active material is first coated and dried on the upper surface of the electrode, and then the electrode may continue to travel and the active material is coated and dried on the lower surface of the electrode, after which the reference point marking device (100) may mark the reference point (M) on the lower surface. In this case, the reference point marking device (100) may be placed on the upper and lower surfaces of the electrode, respectively, according to the electrode travel path to mark a reference point. Alternatively, a single reference point marking device (100) may mark a reference point (M) on both the upper and lower surfaces of the electrode.

[0102] The control unit (40) controls the first and second marking machines to mark reference points (M) at predetermined positions and intervals when the multi-lane electrodes are driven. A position measuring device (50) capable of acquiring coordinate data of the longitudinal position of the electrodes can be provided to determine the position and interval of the electrodes. The position measuring device (50) can acquire the longitudinal position of the electrodes as coordinate data based on the amount of rotation of the unwinder (UW) or rewinder (RW). For example, a rotary encoder (50U, 50R) that extracts the position value of the electrodes from the amount of rotation of the motor driving the unwinder (UW) or rewinder (RW) can be used as the position measuring device. In FIG. 3, for convenience of explanation, the rotary encoder (50U) of the unwinder (UW) and the rotary encoder (50R) of the rewinder (RW) are shown placed outside the unwinder (UW) and the rewinder (RW), respectively, but the encoders (50U, 50R) can be embedded in the unwinder (UW) and the rewinder (RW), respectively.

[0103] As shown in FIG. 3, the control unit (40) is connected to the position measuring device (50) and, when the electrode moves, when the electrode arrives at a predetermined position, it gives a marking signal to the first marking device (20) and the second marking device (30). In addition, the marking signal is repeatedly emitted at predetermined intervals, so that the first marking device (20) and the second marking device (30) mark a reference point (M) at the blank portion (11) of each electrode lane at predetermined intervals along the longitudinal direction of the lane electrode.

[0104] Referring to FIG. 5, it is illustrated that the first marking device (20) and the second marking device (30) mark a first reference point (M1, M1') at a point 300m along the electrode length direction coordinates and a second reference point (M2, M2') at a point 600m along the electrode length direction coordinates. When creating a roll map, reference points (M) may be marked at positions 25%, 50%, and 75% of the total electrode length (full roll) (see FIG. 1). For example, if the electrode length is 1200m, reference points (M) can be marked at points 300m, 600m, and 900m, respectively. As described above, when marking reference points, the coordinates or sequence information of the reference points and the sequence information of each electrode lane may be marked.

[0105] In the example of FIG. 5, it is shown that the first marking device (20) marks the first reference point (M1) and the second reference point (M1) in the blank area (11) of the first electrode lane at the left end. In the blank area (11) of the second electrode lane to the eighth electrode lane, the second marking device (30) marks the first and second reference points (M1', M2') while moving in the width direction. The reference point (coordinate) of the second electrode lane is marked at the same position as that of the first electrode lane. However, when the second marking device (30) moves along the width direction, the multi-lane electrode also moves in the electrode travel direction (arrow direction in FIG. 5), so due to the speed of movement, the reference point marking path from the third electrode lane to the eighth electrode lane becomes a diagonal path inclined backward in the electrode length direction. That is, the reference point (M) of the third electrode lane to the eighth electrode lane is marked at a position pushed back by 1.1m compared to the first and second electrode lanes. The distance pushed back may vary depending on the width of the multi-lane electrode and each electrode lane, the movement speed of the multi-lane electrode, the movement speed of the second marking device (30), etc. The reference point marking position of each electrode lane can be input to the control unit (40) connected to the position measuring device (50) and the first and second marking devices (20, 30).

[0106] After the first reference point (M1, M1') is marked for each electrode lane, the second marking machine (30) moves back along the width direction to the position of the blank area (11) of the second electrode lane. When the lane electrode moves in the driving direction and reaches a predetermined distance (e.g., 300 m) from the first reference point (M1, M1'), the first and second marking machines (30) mark the second reference point (M2, M2'). The second marking machine (30) moves again along a diagonal path to mark the reference point (M) on the blank area (11) of the second to eighth electrode lanes. Afterward, when marking the third reference point (M), the first and second marking machines repeat the marking operation described above.

[0108] Information regarding the reference point marking position input to the control unit (40) is input to the roll map generation unit as described below, and the roll map generation unit can generate a roll map of the multi-lane electrode and each individual electrode lane based on this reference point position. Even if the reference point coordinates of each electrode lane fluctuate slightly, since the coordinate positions and the spacing between the coordinates are input, there is no problem in creating a roll map or processing by referring to it in a subsequent process. In addition, the coordinates of each electrode lane can be corrected as needed based on the reference point coordinate positions and spacing.

[0109] In summary, according to the present invention, reference points can be efficiently marked on a multi-lane electrode having a plurality of electrode lanes using two types of marking machines, thereby enabling the electrode process and quality control of each process to be performed automatically and efficiently.

[0111] (Second embodiment)

[0112] FIG. 6 is a schematic diagram of a reference point marking device of a second embodiment of the present invention, FIG. 7 is a schematic diagram showing the operation process of the first and second marking devices according to the second embodiment, and FIG. 8 is a schematic diagram showing that a reference point (M) is marked on a darain electrode by the reference point marking device (200) of the second embodiment.

[0113] In this embodiment, a first marking device is additionally provided at the other end of the multi-lane electrode. In addition, the first marking device marks the blank portion (11) of the electrode lane located at one end of the multi-lane electrode, and the second marking device (30) moves to mark the blank portion (11) of the remaining electrode lane. Therefore, additional description of the configuration identical to the first embodiment will be omitted.

[0114] Referring to FIGS. 6 to 8, the first marking device (20) of the present embodiment is composed of a one-side marking device (20A) and a other-side marking device (20B) that mark a reference point (M) on the blank portion (11) of the electrode lane located at one end and the other end in the width direction of the electrode lane. In this case, the second marking device (30) can mark a reference point (M) on the blank portion (11) of one or more electrode lanes arranged between the electrode lanes located at the one end and the other end.

[0115] When one electrode lane is arranged between the electrode lanes located at one end and the other end, there are a total of three electrode lanes. In this case, the second marking device (30) marks a reference point (M) on the blank portion (11) of the electrode lane between the electrode lanes at both ends. As shown in FIG. 8, multiple electrode lanes may be arranged between the electrode lanes located at one end and the other end. In this embodiment, a total of eight electrode lanes are provided. The blank portion (11) of the first electrode lane on the one end side and the eighth electrode lane on the other end side is marked with a reference point (M) by the one end marking device (20A) and the other end marking device (20B), respectively.

[0116] In the blank portions (11) of the second electrode lane to the seventh electrode lane, a reference point (M) is marked by the second marking device (30).

[0117] The reference points (M) of the first electrode lane, the second electrode lane, and the eighth electrode lane are all marked at the same location. However, the path of the reference points (M) marked from the second electrode lane to the seventh electrode lane becomes a diagonal path that is inclined backward in the longitudinal direction due to the electrode movement speed.

[0118] The control unit (40) controls the one-sided marking device (20A), the other-sided marking device (20B), and the second marking device (30) to mark reference points (M) at predetermined intervals along the longitudinal direction of each electrode lane.

[0120] (Third embodiment)

[0121] FIG. 9 is a schematic diagram of a reference point marking device of a third embodiment of the present invention, and FIG. 10 is a schematic diagram showing marking by the reference point marking device of the third embodiment.

[0122] In the reference point marking device (300) of the present embodiment, the first marking device (20) can mark (G) a defective location and / or defective section of the Darein electrode (10) instead of or together with the reference point marking.

[0123] That is, the first marking device (20) can not only mark reference points (M) at predetermined intervals according to the instructions of the control unit (40), but also mark the defective location or defective section on the multi-leg electrode when a defect is detected. As a result, the reference point (M) and the defective part can be simultaneously displayed on the multi-leg electrode (10), and based on this, the reference point (M) and the defect can also be visually displayed on the roll map.

[0124] As shown in FIG. 9, a predetermined defect inspection device (60, 70) may be placed before the position of the first marking device (20) for the recognition of defects. The defect inspection device (60, 70) can acquire inspection data regarding defects by inspecting a multi-lane electrode moving in a roll-to-roll state, and can acquire coordinate data of the electrode regarding the defective location and / or defective section where the inspection data was acquired by linking with the position measuring device (50). At least one defect inspection device (60, 70) is placed before the position of the first marking device (20).

[0125] The first marking device (20) can mark (G) a defective location and / or a defective section on the unmarked portion (11) of one or both ends in the width direction of the multi-leg electrode based on coordinate data received from the defect inspection device (60, 70).

[0126] Examples of the above defect inspection devices (60, 70) include an electrode slurry loading amount measuring device, a dimension and width measuring device, and an appearance inspector installed on the transfer line of the multi-lane electrode.

[0127] The electrode slurry loading amount measuring device may employ non-contact thickness measuring sensors such as ultrasonic sensors, displacement sensors, laser sensors, and confocal thickness sensors. Since the thickness of the electrode foil is known, for example in the case of a confocal thickness sensor, the slurry loading amount can be measured by analyzing the wavelength of the reflected light emitted from the sensor and calculating the distance (thickness) between the sensor and the electrode.

[0128] The dimension and width measuring instrument may employ a type of vision measuring instrument capable of measuring the electrode width, the width of the retaining portion (12) and the uncoated portion (11) by photographing or scanning the appearance of the electrode being coated. Once the widths of the retaining portion (12) and the uncoated portion (11) are determined, it is also possible to determine whether there is a mismatch between the retaining portion (12) and the uncoated portion (11).

[0129] The appearance inspection device can capture the appearance of the electrode to acquire an appearance image. From this, data regarding appearance defects such as pinholes, lines, and crater shapes can be obtained, and data regarding insulation appearance or insulation defects can also be obtained. The appearance inspection device may also include an inspection device having a sensor capable of distinguishing the color of the electrode, such as a color sensor. By means of the color sensor, parts that differ in color from the electrode, such as connecting tape or PET film, can be detected.

[0130] In addition to the measuring instruments or inspection devices described above, defect inspection devices for detecting other types of defects may also be applied.

[0131] The above defect inspection device (60, 70) is connected to and linked with the above position measuring device (50) or the control unit (40) connected to the position measuring device, and can acquire the longitudinal coordinates of the electrode regarding the defect location where a defect is detected or the defect section where the defect part is connected. Accordingly, the above defect inspection device (60, 70) can acquire inspection data regarding the type, size, shape, characteristics, etc. of the defect, as well as acquire coordinate data of the electrode location where the inspection data was acquired. This inspection data and coordinate data are transmitted to the above control unit (40). Based on this inspection data and coordinate data, the control unit (40) issues a marking instruction to the first marking device (20) for the defect location and / or defect section. Based on the above coordinate data, the above first marking device (20) performs marking (G) of the corresponding defect location and / or defect section on the blank portion (11) of one or both ends in the width direction of the multi-leg electrode.

[0132] That is, a defect is detected at a specific position (coordinate) in the longitudinal direction of the drain electrode by the defect inspection device (60, 70), and the control unit (40) controls the first marking device (20) to mark the defect at that position (coordinate).

[0133] Specifically, the control unit (40) can calculate the time when the electrode portion of the defective location and / or defective section arrives at the first marking unit (20) based on the distance between the defect inspection unit (60, 70) and the first marking unit (20) and the movement speed of the multi-leg electrode. At the time of arrival, the first marking unit (20) marks the defective location and / or defective section (G) according to the marking instruction of the control unit (40). In this way, in this embodiment, the location (coordinates) of the defective location and / or defective section can be specified based on coordinate data received from the defect inspection unit. In addition, based on the specified location (coordinates), the control unit (40) controls the first marking unit (20) to mark the defect at a specific time.

[0134] FIG. 10 shows a defective section marked by the first marking device (20). The defective marking (G) is performed on the blank area (11) at one end or both ends in the width direction of the multi-lane electrode. That is, when a first marking device (20) (one end marking device (20A)) is installed at one end of the multi-lane electrode, the one end marking device performs a reference point (M) and / or defective marking (G) on the blank area (11) of the first electrode lane.

[0135] When two first marking devices (20) (one end marking device and the other end marking device) are installed at both ends of the electrode lane, the one end marking device (20A) and the other end marking device (20B) perform a reference point (M) and / or a defect marking on the blank area (11) of the first electrode lane and the blank area (11) of the outer end of the eighth electrode lane. In this case, a defect marking can be performed on both the blank area (11) of the first electrode lane and the blank area (11) of the outer end of the eighth electrode lane, or a defect marking can be performed selectively on only one of the two blank areas (11).

[0136] When the reference point marking location and the marking location of the defective area or defective section are different, the control unit (40) can control the first marking device (20) to perform reference point marking and defective marking, respectively.

[0137] However, if the reference point marking location and the marking location of the defective area or defective section overlap, the control unit (40) can control the first marking device (20) so that the defective marking (G) takes precedence. In this case, the first marking device (20) does not mark a reference point at the corresponding marking location but only performs the defective marking. Since multiple reference points (M) are marked at predetermined intervals along the electrode length direction, even if a reference point (M) is not marked at the corresponding location due to the defective marking, a roll map can be created by identifying the reference point locations (coordinates) before and after it or the intervals between reference points.

[0138] If necessary, the control unit (40) can control the first marking machine (20) to mark a reference point (M) before and after the defective marking location by avoiding the defective marking location. In this case, the reference point (M) is marked at a location other than the original marking location. However, the control unit (40) can determine the location of the reference point that is normally marked, the location of the reference point that has changed due to the defective marking, and the distance from other reference points. Accordingly, the control unit (40) or the roll map generation unit connected to the control unit (40) can reflect this when managing subsequent processes or creating a roll map. Alternatively, by referring to the actual marked reference point location and the distance, the reference point can be displayed on the screen at regular intervals through appropriate coordinate correction.

[0139] In summary, according to the present invention, even when a reference point (M) is marked at a predetermined interval, or when the interval of a specific reference point (M) is marked to change due to the presence of a defect, as long as the longitudinal coordinate of the marked position can be specified, the control unit (40) to the roll map generation unit can correct the coordinate to create a process control or roll map.

[0141] <Roll Map Generator>

[0142] FIG. 11 is a schematic diagram of a roll map generating device which is another aspect of the present invention, FIG. 12 is a schematic diagram of a data visualization device included in a roll map generating unit, and FIG. 13 is a schematic diagram showing a roll map of a multi-lane electrode and an individual electrode lane generated by the roll map generating device of the present invention.

[0143] The roll map generating device (400) of the present invention comprises: a position measuring device (50) that acquires the longitudinal position of a darain electrode according to the amount of rotation of the unwinder (UW) or rewinder as coordinate data when the darain electrode moves in a roll-to-roll state between the unwinder (UW) and the rewinder (RW); and a marking device (20, 30) that is linked with the position measuring device and marks reference points (M) at predetermined intervals on the darain electrode along the longitudinal direction of the darain electrode. The system includes a roll map generating unit (80) that acquires coordinate data of the electrode length direction position and reference point (M) in conjunction with the position measuring device and the marking device, and generates a roll map by displaying the coordinate data on a roll map that simulates an electrode moving in a roll-to-roll state. The marking device includes a first marking device (20) that marks a reference point (M) on the blank area (11) of an electrode lane located at one end or both ends in the width direction of the multi-lane electrode, and a second marking device (30) that marks a reference point (M) on the blank area (11) of the remaining electrode lane excluding the electrode lane located at one end or the electrode lane located at both ends while moving along the width direction.

[0144] Since the electrode (10) moves according to the rotation of the unwinder (UW) and the rewinder (RW), the longitudinal position of the electrode (10) can be determined according to the amount of rotation of the unwinder (UW) or the rewinder (RW). The position measuring device (50) can acquire the longitudinal position of the electrode (10) as coordinate data. For example, if the coordinate acquired by the position measuring device (50) is 0, the beginning end of the electrode (10) can be determined, and if the coordinate of 1200 meters is acquired from the electrode (10) which is 1200 meters long, the end end of the electrode (10) can be determined.

[0145] The coordinate data of the longitudinal position of the electrode (10) can be detected by a rotary encoder (50U, 50R) installed in the unwinder (UW) or rewinder (RW). Typically, the rotary encoder (50U, 50R) is installed in the motor drive unit that drives the unwinder (UW) and rewinder (RW) to detect the electrode movement distance according to the motor rotation speed (amount of rotation). Therefore, when the electrode (10) moves between the unwinder (UW) and the rewinder (RW), the movement distance can be detected by the rotary encoder (50U, 50R).

[0146] The above marking device may utilize the first marking device (20) and the second marking device (30) employed in the reference point marking device (100, 200, 300) described above. Since the first and second marking devices can be linked with the position measuring device (50) either directly or through the control unit (40), reference points (M) can be marked on each electrode lane at predetermined intervals along the longitudinal direction of the lane electrodes.

[0147] The above marking machine includes a first marking machine (20) that marks a reference point (M) on an unmarked portion (11) of an electrode lane located at one or both ends in the width direction of a multi-lane electrode, and a second marking machine (30) that moves along the width direction and marks a reference point (M) on an unmarked portion (11) of the remaining electrode lane, excluding the electrode lane marked by the first marking machine (20). As described above, the marking machine of the present invention can significantly reduce the equipment and cost for marking reference points (M) on a plurality of electrode lanes.

[0148] The present invention includes a roll map generating unit (80) that is linked with the position measuring device (50) and the marking device (20, 30) to acquire coordinate data of the longitudinal position of the electrode and the reference point (M), and generates a roll map by displaying the coordinate data on the roll map.

[0149] The roll map generation unit (80) is linked with the position measuring device to acquire coordinate data along the length direction of the rail electrode, and is also linked with the marking device to represent the position and spacing of the reference point (M) as coordinate data. The coordinate data of the reference point (M) can be transmitted from the marking device directly or through the control unit (40) to the roll map generation unit (80).

[0150] The above roll map generation unit (80) can generate a roll map of the multi-lane electrode and a roll map of each individual electrode lane constituting the multi-lane electrode based on coordinate data of reference points (M) marked by the first and second marking machines.

[0151] Additionally, the roll map generation unit (80) can generate a roll map that displays information regarding defects in addition to reference point (M) information. To this end, at least one defect inspection unit (60, 70) can be placed before the location of the first marking unit (20) to obtain inspection data regarding defects by inspecting the multi-leg electrode and to obtain coordinate data of the electrode regarding the defect location and / or defect section where the inspection data was obtained by linking with the position measuring unit. Since the types of defect inspection units (60, 70) have been described above, further explanation is omitted.

[0152] As described above, the first marking device (20) can mark defective locations and / or defective sections on the unmarked portions (11) of one or both ends in the width direction of the dart electrode based on coordinate data received from the defect inspection device (60, 70). The roll map generation unit (80) can display the coordinate data of the reference point (M) and the coordinate data of the defective locations and / or defective sections together on the roll map.

[0153] The above roll map generation unit (80) may store data acquired from defect inspection devices (60, 70), marking devices (20, 30), and position measuring devices (50), or may be equipped with a database (81) in which data regarding the quality or dimensions of normal electrodes is stored. Additionally, the above roll map generation unit (80) may be equipped with a central processing unit (82) that processes the acquired data and commands visualization on a visualization device (83) equipped in the roll map generation unit (80).

[0154] The above roll map generation unit (80) defines a visualization area to form a roll map simulating the electrode (10) and has a visualization device (83) that displays coordinate data on the defined area. The visualization device (83) is connected to a central processing unit (82) and can visualize and display inspection data and coordinate data according to instructions from the central processing unit.

[0155] Referring to FIG. 12, the visualization device (83) is equipped with an acquired data input unit (83a), a roll map coordinate identification unit (83b), and an image generation unit (83c).

[0156] The acquired data input unit (83a) receives data from the central processing unit (82).

[0157] The roll map coordinate identification unit (83b) can define a visualization area to form a roll map and define pixel coordinate values ​​within the visualization area for each data element of the acquired source data. At this time, when data regarding specifications such as the lot number, length, and width of the electrode roll is input to the control unit (40) or server, etc. through electrode roll information registration, the roll map coordinate identification unit (83b) can calculate and determine the visualization area of ​​the roll map according to a predetermined scale conversion scale from the data regarding the size of the electrode (10). Alternatively, it is also possible to calculate and determine the visualization area of ​​the roll map according to a predetermined scale conversion scale from the length direction and width direction position data of the electrode (10) described above.

[0158] The above coordinate identification unit (83b) can map the acquired data regarding quality or defects and the position data (width direction and length direction) of the electrode (10), and assign the mapped data to the visualization area (roll map) according to pixel coordinates.

[0159] The image generation unit (83c) can represent the mapped data elements assigned to each pixel coordinate within the visualization area as at least one legend. A legend refers to various shapes such as circles, squares, and triangles displayed in the visualization area, or shapes assigned colors. Accordingly, the image generation unit (83c) can generate the roll map of the present invention by visually displaying various data related to quality or defects at pixel coordinates (coordinates on the roll map) corresponding to each position data of the actual electrode (10) in the visualization area called the roll map, using a display unit of a designated shape, form, and color for each data, thereby implementing the roll map at the pixel coordinates (coordinates on the roll map) and creating the roll map at the pixel coordinates (coordinates on the roll map).

[0160] Additionally, based on data stored in a storage unit such as a database (81), data corresponding to a specific range of the roll map can be retrieved from the storage unit and displayed on the screen (image generation) in conjunction with the specific range of the roll map. At this time, the central processing unit (82) can issue a command to the visualization device (83) to visualize and display inspection data that has been determined to be abnormal in comparison with normal data stored in the database (81), so as to distinguish it from other data.

[0161] Setting the size of the visualization area or determining the coordinates of the visualization area to generate an image can be performed using various conventional user interfaces or various programs or processing tools related to data allocation, processing, analysis, and visualization. Therefore, the above-described roll map generation unit (80) is merely one example and is not limited to the above-described embodiment.

[0162] The aforementioned roll map generation unit (80) may be a data processing system such as a production management system (MES). In the electrode (10) manufacturing process, an electrode MES is provided to manage a series of electrode manufacturing processes such as coating, pressing, and slitting. Therefore, when the aforementioned coordinate data, inspection data, etc. are transmitted to the electrode MES, the electrode MES can generate the aforementioned roll map.

[0163] The roll map generating device (400) of the present invention displays the generated roll map on the display unit (90), thereby allowing data regarding reference points (M) and defects to be easily identified visually at a glance.

[0164] The roll map generating device (400) of the present invention may include a control unit (40) (PLC control unit) that controls the movement of electrodes between an unwinder (UW) and a rewinder (RW). In this case, the control unit (40) may be connected to the position measuring device (50) and the defect inspection device (60, 70) to transmit the coordinate data of the electrode position and inspection data to the roll map generating unit (80). In this case, the control unit (40) may process the inspection data and coordinate data into a form that is easy to process at the roll map generating unit (80). Since the PLC control unit (40) is connected to the defect inspection device (60, 70) or encoder, etc. to control the roll-to-roll transfer of the electrodes, it is more efficient in terms of data processing and management to transmit data through the control unit (40) rather than directly transmitting data from the defect inspection device, encoder, etc. to a data processing system such as an electrode MES.

[0166] Referring to FIG. 13, a roll map of a multi-lane electrode and an individual electrode lane generated by the roll map generating device of the present invention is shown.

[0167] In FIG. 13, a roll map regarding the upper and lower surfaces of four electrode lanes is simultaneously disclosed.

[0168] As the lanes go from lane 1 to lane 4, the position of the reference point (M) is shifted toward the rear in the longitudinal direction, as indicated on the roll map. This is because when the second marking machine (30) marks while moving along the width direction, it sequentially marks along a diagonal path that slopes toward the rear in the longitudinal direction due to the movement speed of the electrode as shown in FIGS. 5 and FIGS. 8.

[0169] In addition, defective locations or defective sections are marked on the above-mentioned roll map by a defect inspection device. As described above, the defect inspection device linked with the position measuring device transmitted inspection data and the coordinate data of the location where the inspection data was acquired to the roll map generation unit (80), and the roll map generation unit visualized and displayed the defective section and / or the defective section at the corresponding coordinate location on the roll map based on this. As described above, the marking of the defect can be performed by the first marking device (20).

[0170] As shown in FIG. 13, the roll map generation unit (80) of the present invention can display the coordinate data of a reference point (M) and the coordinate data of a defective location and / or a defective section together on the roll map. Accordingly, in the electrode process, data related to the reference point (M), electrode loss, quality, or defects can be easily identified visually at a glance.

[0171] As described above, when the reference point position or spacing of the roll map of the multi-lane electrode or the roll map of each individual electrode lane changes due to defects, etc., the coordinate data can be appropriately corrected by comparing it with the basic data stored in the control unit or the roll map generation unit.

[0172] In addition, the roll map produced in the first process can be referenced in the subsequent second and third processes, and if a change in length or a defect occurs in the actual electrode during subsequent process processing, the roll map of the first process can be corrected to generate the roll maps for the corresponding second and third processes.

[0173] Referring to FIG. 13, it is shown that a roll map of lane 2 in the slitting process is generated by referring to the roll map of lane 2 in the roll press process.

[0175] As described above, according to the present invention, a reference point can be marked on a multi-leg electrode with a simple configuration, thereby significantly reducing the marking process and costs. In addition, defect marking can be performed simultaneously with the reference point marking, making it easy to detect electrode defects.

[0176] Furthermore, since a roll map can be generated using the aforementioned reference point marking device, it is very convenient to perform electrode quality control automatically. In addition, since quality history can be managed based on the roll map, quality tracking becomes easy in the event of product defects.

[0178] The present invention has been described in more detail above through drawings and embodiments. However, the configurations described in the drawings or embodiments described in this specification are merely one embodiment of the present invention and do not represent all technical concepts of the present invention; therefore, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application. Explanation of the symbols

[0180] 10: Darein electrode 11: Mujibu 12: Maintenance Department M: Reference point M1,M1': 1st reference point M2,M2': Second reference point M3, M3': 3rd reference point 20: 1st marking machine 20A: One-sided marking machine 20B: Other end marking machine 30: 2nd marking machine R: Guide axis 40: Control unit 50: Position measuring device C: Cotter D: Electrode oven 60,70: Defect inspector G: Defective marking 100, 200, 300: Reference point marking device 80: Roll Map Generation Section 81: Database 82: Central Processing Unit 83: Visualization device 90: Display section 400: Roll Map Generator

Claims

Claim 1 A marking device for marking a reference point on a multi-lane electrode in which a plurality of electrode lanes are arranged along the width direction, comprising: a first marking device that marks a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of the multi-lane electrode; a second marking device that moves along the width direction and marks a reference point on an unmarked portion of an electrode lane other than the electrode lane located at one end or an electrode lane other than the electrode lane located at both ends; and a control unit that controls the operation of the first marking device and the second marking device, wherein when the multi-lane electrode moves along the length direction, the control unit controls the first marking device and the second marking device so that the first marking device and the second marking device mark a reference point on an unmarked portion of each electrode lane at predetermined intervals along the length direction of the multi-lane electrode. Claim 2 In claim 1, the first marking device is a one-side marking device that marks a reference point on an unmarked portion of an electrode lane located at one end in the width direction of the electrode lane, and the second marking device is a reference point marking device that marks a reference point on each of the unmarked portions of a plurality of electrode lanes excluding the electrode lane located at the one end. Claim 3 In claim 1, the first marking device is composed of a one-side marking device and a other-side marking device that each mark a reference point on an unmarked portion of an electrode lane located at one end and the other end in the width direction of the multi-lane electrode, respectively, and the second marking device is a reference point marking device that marks a reference point on an unmarked portion of one or more electrode lanes arranged between the electrode lanes located at the one end and the other end. Claim 4 A reference point marking device according to claim 1, wherein a guide axis is arranged along the electrode width direction on the dart electrode, the first marking device and the second marking device are coupled to the guide axis, and the second marking device is installed to be movable along the guide axis. Claim 5 In paragraph 4, the first marking device is a reference point marking device capable of moving in the width direction along the guide axis in response to the change in width when marking a reference point for a multi-lane electrode of a different width. Claim 6 delete Claim 7 A reference point marking device according to claim 1, wherein when the second marking machine moves along the width direction and marks each of a plurality of electrode lanes, the marking path is formed as a diagonal path inclined toward the rearward direction of the electrode length due to the movement speed of the multi-lane electrode in the length direction. Claim 8 In claim 1, the above-mentioned Darein electrode is a double-sided electrode in which an electrode active material is coated on the upper surface and the lower surface, respectively, and the above-mentioned first marking device and second marking device are reference point marking devices installed on the upper surface and the lower surface of the above-mentioned Darein electrode, respectively. Claim 9 In claim 1, the reference point being marked comprises a reference point marking device including coordinates of a reference point along the longitudinal direction of the multi-lane electrode or sequence information of a reference point, and sequence information of each electrode lane along the electrode width direction. Claim 10 A reference point marking device according to claim 1, further comprising a position measuring instrument that acquires the longitudinal position of the electrode according to the amount of rotation of the unwinder or rewinder as coordinate data when the electrode moves along the longitudinal direction in a roll-to-roll state between the unwinder and the rewinder, and wherein the first marking device and the second marking device mark a reference point based on the coordinate data. Claim 11 In claim 10, the first marking device is a reference point marking device that performs at least one marking of a defective location and a defective section of a multi-leg electrode instead of or together with a reference point marking. Claim 12 In claim 11, a defect inspection device is positioned at least once prior to the position of the first marking device, wherein the defect inspection device is configured to inspect a multi-lane electrode moving in a roll-to-roll state to acquire inspection data regarding defects, and to acquire coordinate data of an electrode regarding at least one of the defect location and defect section for which the inspection data was acquired in conjunction with the position measuring device, and the first marking device marks at least one of the defect location and defect section on the unmarked portion of one or both ends in the width direction of the multi-lane electrode based on the coordinate data received from the defect inspection device. Claim 13 In claim 12, the control unit determines the time when at least one electrode part among the defective location and defective section arrives at the first marking device based on the distance between the defect inspection device and the first marking device and the moving speed of the multi-leg electrode, and controls the first marking device to mark at least one of the defective location and defective section at the time of arrival. Claim 14 A position measuring device that acquires the longitudinal position of the darain electrode as coordinate data according to the amount of rotation of the unwinder or rewinder when the darain electrode moves in a roll-to-roll state between the unwinder and the rewinder; and a marking device that is linked to the position measuring device and marks reference points at predetermined intervals on the darain electrode along the longitudinal direction of the darain electrode. The device comprises a roll map generating unit that acquires coordinate data of the electrode length direction position and reference point in conjunction with the position measuring device and the marking device, and generates a roll map by displaying the coordinate data on a roll map simulating an electrode moving in a roll-to-roll state; the marking device includes a first marking device that marks a reference point on an unmarked portion of an electrode lane located at one end or both ends in the width direction of a multi-lane electrode, and a second marking device that marks a reference point on an unmarked portion of an electrode lane excluding the electrode lane located at one end or the electrode lane located at both ends while moving along the width direction; and the roll map generating unit generates a roll map of the multi-lane electrode and a roll map of each individual electrode lane constituting the multi-lane electrode based on the coordinate data of the reference points marked by the first and second marking devices. Claim 15 In claim 14, at least one defect inspection device is positioned prior to the first marking device position, which inspects the above-mentioned drain electrode to acquire inspection data regarding defects and is linked with the above-mentioned position measuring device to acquire coordinate data of the electrode regarding at least one of the defect location and defect section for which the inspection data was acquired; the first marking device marks at least one of the defect location and defect section on the unmarked portion of one or both ends in the width direction of the above-mentioned drain electrode based on the coordinate data received from the defect inspection device; and the roll map generating unit displays the coordinate data of the reference point and the coordinate data of the defect location and defect section together on the roll map.

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