Electrode coating device and electrode coating method
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2025-12-08
- Publication Date
- 2026-08-13
Smart Images
Figure KR2025020973_13082026_PF_FP_ABST
Abstract
Description
Electrode coating device and electrode coating method
[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2025-0016587 filed on February 10, 2025, and all contents disclosed in the document of said Korean Patent Application are incorporated herein as part of this specification.
[0002] The present invention relates to an electrode coating device and an electrode coating method applicable to the electrode coating device, and more specifically, to an electrode coating device and an electrode coating method capable of maintaining a consistent production quality of an electrode by aligning a first reference position of a coater roller that guides the movement of an electrode foil and changes the direction of travel to facilitate the application of an electrode slurry to the electrode foil, with a second reference position of a coater die that applies an electrode slurry to the surface of the electrode foil.
[0003]
[0004] The demand for secondary batteries as an energy source is rapidly increasing in various fields, including personal mobile devices and electric vehicles.
[0005] Unlike primary batteries, rechargeable secondary batteries are being developed not only for digital devices but also for transportation means such as electric vehicles.
[0006] Rechargeable batteries can be classified in various ways depending on the materials of the positive and negative electrodes and their external shape. In particular, lithium rechargeable batteries using lithium compound materials are widely used as power sources for various devices, replacing conventional nickel-cadmium rechargeable batteries due to their high capacity and low self-discharge rate.
[0007] The above-described lithium secondary battery has a structure in which an electrode assembly for charging and discharging electrical energy is embedded inside a case. The electrode assembly has a structure in which a negative electrode, a separator, and a positive electrode are repeatedly stacked, and is embedded together with an electrolyte in a case (such as a pouch or cylindrical case).
[0008] The materials for the anode, cathode, and separator mentioned above are selected considering battery life, charge / discharge capacity, temperature characteristics, and stability, and the charging and discharging of the lithium secondary battery proceeds as the process of lithium ions being intercalated and deintercalated from the lithium metal oxide of the anode to the cathode is repeated.
[0009] Meanwhile, the electrodes (anode and cathode) constituting the above electrode assembly generate current through ion exchange, and each of the anode and cathode is manufactured by applying an electrode slurry to one or both surfaces of an electrode foil (electrode current collector) made of aluminum or copper foil, undergoing a drying process, processing an electrode tab, and cutting it to an appropriate size.
[0010] In other words, the manufacturing process of a secondary battery includes an electrode coating process in which an electrode slurry is applied to the surface of an electrode foil, and a drying process in which the applied electrode slurry is dried.
[0011] Referring to FIG. 1, which illustrates the application of an electrode slurry to an electrode foil through an electrode coating device, the electrode coating device includes a coater roller (10) and a coater die (20). The coater roller (10) and the coater die (20) are positioned on a path where the electrode foil (1a) is continuously transported in an unfolded state, and the coater die (20) is positioned to apply an electrode slurry to one side of the electrode foil (1a).
[0012] The electrode foil (1a) moves continuously, but bends so that its direction of transport changes at the point where it passes the coater roller (10), and the coater die (20) is positioned so as to be perpendicular to the surface of the electrode foil (1a) at the point where the direction of transport of the electrode foil (1a) changes, and continuously applies the electrode slurry.
[0013] That is, while the electrode slurry is discharged in fixed amounts from the coater die (20), the electrode foil (1a) moves at a constant speed, and the electrode slurry is uniformly applied to the electrode foil (1a). For reference, the opposite side of the electrode foil (1a) may also have a coater roller and a coater die additionally positioned at a spaced point so that the electrode slurry can be applied in the same manner (with the electrode foil flipped over).
[0014] The above-mentioned coater die (20) receives electrode slurry through a tank (2) in which electrode slurry is stored, and a pump (3) that generates a predetermined flow pressure to move the electrode slurry and a flow meter (4) that detects the flow pressure are installed in the supply line. Additionally, an adjustment device (not shown) that adjusts the gap between the coater die (20) and the electrode foil (1a), a vision device that checks the coating state of the electrode slurry, a sensing device, a monitoring device, a control device, etc. may be additionally installed.
[0015] Meanwhile, the electrode slurry is not applied to the entire area of the electrode foil (so that it can be processed into an electrode tab in a subsequent process), but is not applied to one end or both ends along the width direction to form an uncoated portion (1c). That is, the electrode (1) on which the electrode slurry is applied to the electrode foil (1a) is divided into a retained portion (1b) on which the electrode slurry is applied and an uncoated portion (1c) on which the electrode slurry is not applied at both ends (or one end) of the retained portion (1b).
[0016] In the electrode coating device configured in this way, the position of the coater die (20) was determined conventionally by relying on the operator's visual inspection. Consequently, a problem could arise where the application position of the electrode slurry was inconsistent.
[0017] That is, referring to Fig. 2, which shows the application of electrode slurry with the coater die shifted to one side (left side based on the drawing), the center (C2) of the coater die (20) and the center (C1) of the coater roller (10) do not coincide, and when shifted to one side, a problem occurs in which the width of the uncoated parts (1c) on both sides differs.
[0018] In particular, when electrode foil (1a) moves on a single coater roller (10) and coater dies are placed at multiple points to apply electrode slurry to each to manufacture an electrode (see structure in FIG. 8), it was even more important to align each coater die at a predetermined position.
[0019] Therefore, it was necessary to provide an electrode coating device and an electrode coating method capable of accurately selecting the position of the coater die.
[0020]
[0021] Accordingly, the primary objective of the present invention is to provide an electrode coating apparatus and an electrode coating method capable of accurately selecting the position of a coater die so that an electrode slurry can be accurately applied to a target area (i.e., so that the coater die and the coater roller can be aligned at an intended reference position).
[0022]
[0023] To achieve the aforementioned purpose, the electrode coating device provided in the present invention is an electrode coating device for applying an electrode slurry to the surface of an electrode foil, comprising: a coater roller that rotates while the electrode foil moves in a surface contact state; a first sensor that detects the position of the coater roller; a coater die that is positioned close to the coater roller and applies an electrode slurry to the electrode foil; a second sensor that detects the position of the coater die; and a control unit that communicates with the first sensor to receive position information of the coater roller and communicates with the second sensor to receive position information of the coater die; wherein at least one of the coater roller and the coater die is capable of sliding, and the control unit determines whether the coater roller and the coater die are aligned based on the position information of the coater roller and the position information of the coater die.
[0024] The control unit comprises: a receiving unit that receives position information of the coater roller and position information of the coater die from the first sensor and the second sensor, respectively; a reference position selection unit that selects a first reference position and a second reference position for the coater roller and the coater die, respectively; a reference position alignment unit that aligns the coater roller, the first reference position, and the second reference position of the coater die with each other; and a judgment unit that determines whether the coater roller and the coater die are aligned.
[0025] The reference position selection unit selects points that are bisectionally divided along each longitudinal direction as the first reference position of the coater roller and the second reference position of the coater die, and the first sensor is located on a virtual first extension line perpendicular to the longitudinal direction at the first reference position of the coater roller and moves in conjunction with the coater roller, and the second sensor is located on a virtual second extension line perpendicular to the longitudinal direction at the second reference position of the coater die and moves in conjunction with the coater die. At this time, the judgment unit determines that the alignment of the coater roller and the coater die is achieved when the first sensor and the second sensor are aligned so that the first extension line and the second extension line touch each other.
[0026] Alternatively, the reference position selection unit selects points spaced apart along each longitudinal direction as the first reference position of the coater roller and the second reference position of the coater die, the first sensor is located on a virtual first extension line perpendicular to the longitudinal direction at the first reference position of the coater roller and moves in conjunction with the coater roller, the second sensor is located on a virtual second extension line perpendicular to the longitudinal direction at the second reference position of the coater die and moves in conjunction with the coater die, the first distance from the center of the coater roller to the first sensor and the second distance from the center of the coater die to the second sensor are formed to be the same, and the judgment unit determines that the alignment of the coater roller and the coater die is achieved when the first sensor and the second sensor are aligned such that the first extension line and the second extension line touch each other.
[0027] The control unit is contained within either the first sensor or the second sensor. That is, the entire control unit or a part of the control unit may be manufactured by being integrally integrated into the first sensor or the second sensor. Furthermore, if the control unit is provided separately, the control unit is configured to communicate wirelessly with at least one of the first sensor and the second sensor.
[0028] And, further comprising a sub-die for applying an insulator at a point on the electrode foil where the electrode slurry is not applied, wherein the position of the sub-die is determined according to the position of the coater roller detected by the first sensor or the position of the coater die detected by the second sensor.
[0029] In addition, the apparatus further includes an electrode dryer through which the electrode foil coated with the electrode slurry passes to dry the electrode slurry, wherein the position at which the electrode foil is fed into the electrode dryer is determined by aligning with the position of the coater roller detected by the first sensor.
[0030] Meanwhile, the electrode coating device of the present invention comprises: a first sliding unit that is controlled by the control unit and slides the coater roller; and a second sliding unit that is controlled by the control unit and slides the coater die; wherein the first sliding unit comprises a first motor and the second sliding unit comprises a second motor. And, the judgment unit determines the amount of sliding of the coater roller and the amount of sliding of the coater die through the rotational speed of the first motor and the second motor.
[0031] And, further includes a ruler that detects the sliding amount of the coater die and / or the distance between the coater die and the second sensor.
[0032] In the present invention, a plurality of coater dies are provided and can be arranged side by side toward the coater roller. That is, while the electrode foil moves through one of the coater rollers, the plurality of coater dies may have a configuration in which electrode slurry is applied individually to multiple areas of the electrode foil.
[0033] When a plurality of coater dies are provided as described above, the apparatus comprises: a first sliding unit controlled by the control unit and sliding the coater roller; and a second sliding unit controlled by the control unit and sliding the coater die. The first sliding unit includes a first motor, and the second sliding unit includes a second motor. A plurality of the second sliding units are provided and each is connected to one of the plurality of coater dies, and the plurality of coater dies are individually slid by the connected second sliding units. The judgment unit determines the sliding amount of the coater roller and the sliding amount of the individual coater roller through the rotational speed of the motor, and the reference position alignment unit slides the plurality of coater dies to a predetermined position to align them.
[0034] It includes a ruler that detects the amount of sliding of the coater die moved by the second sliding part and / or the distance between the coater die and the second sensor. Accordingly, the amount of sliding of each coater die can be checked in real time, allowing for more accurate and rapid verification of whether it is aligned at a predetermined position.
[0035] In addition, the present invention additionally provides an electrode coating method applicable to the above electrode coating device.
[0036] The electrode coating method provided in the present invention is an electrode coating method for applying an electrode slurry to the surface of an electrode foil applicable to the electrode coating device described above, comprising: a coater roller position verification step of verifying a first reference position of a coater roller that moves the electrode foil through a first sensor; a coater die position verification step of verifying a second reference position of a coater die that applies the electrode slurry to the electrode foil through a second sensor; an alignment preparation step of detecting the first reference position of the coater roller and the second reference position of the coater die and selecting which of the coater roller and the coater die to slide; an alignment step of sliding the other so that it is aligned with either the coater roller or the coater die; and a judgment step of comparing the first reference position and the second reference position to determine whether the coater roller and the coater die are aligned.
[0037] A plurality of coater dies are individually arranged in close proximity on the coater roller, and in the coater die position verification step, the second reference positions of the plurality of coater dies are verified through each second sensor, and in the alignment step, the alignment of the coater roller and the coater dies is achieved by individually sliding each coater die to move to predetermined positions.
[0038] In the above alignment step, the amount of sliding of each coater die and / or the distance between each coater die and each second sensor is detected.
[0039] In addition, the distance between the coater dies and the second sensor is detected in the alignment step, and the method further includes an additional movement step of additionally moving at least one of the coater dies.
[0040] In addition, the present invention provides an electrode manufactured by the above electrode coating method.
[0041]
[0042] In the present invention having the above configuration, since the position of the coater die can be determined based on the position of the coater roller or the position of the coater roller can be determined based on the coater die, the selection of the electrode slurry application position can be performed more accurately and quickly compared to the conventional method in which the position of the coater die is determined by relying on the operator's visual inspection.
[0043] In the present invention, the first reference position and the second reference position are selectively selected (not fixed positions, but can be selected at any point), thereby suppressing interference between the first sensor and the second sensor caused by the arrangement of the coater roller and the coater die.
[0044] In the present invention, the control unit is configured to be included within the first sensor or the second sensor or to communicate wirelessly, which can simplify the structure and reduce the installation space.
[0045] In addition, since the first reference position of the coater roller can be confirmed through the first sensor in the present invention, the placement position of the sub-die applying the insulator can be determined more accurately, and the position where the electrode foil coated with the electrode slurry enters the electrode dryer can also be determined more accurately.
[0046] The first sliding part that slides the coater roller and the second sliding part that slides the coater die are driven by a motor capable of detecting the amount of rotation (e.g., a stepper motor, a servo motor, etc.), so that the control unit can more accurately detect and control the amount of sliding of the coater die and / or the coater roller.
[0047] In addition, the present invention is further provided with a ruler that detects the sliding amount of the coater die, so that the alignment status can be checked more accurately. Accordingly, feedback control of the first sliding section and / or the second sliding section is possible. In addition, the gap between adjacent coater dies can also be checked through the ruler.
[0048] That is, in the present invention, even if a plurality of coater dies are provided, each coater die can be more accurately aligned to a predetermined position through a configuration in which a control unit detects the sliding amount of a motor and a ruler detects the actual sliding amount of a coater die. Additionally, the aligned position can be further verified.
[0049] In addition, since the roller can detect the distance between the coater die and the second sensor, even if the first sensor and the second sensor are each spaced apart from the center of the coater roller and the coater die, the coater die can be accurately aligned with the coater roller.
[0050] In particular, when manufacturing an electrode, there are cases where the width of the uncoated portion on one side and the width of the uncoated portion on the other side are formed differently. In this case, the coater die and the coater roller are aligned so that their centers coincide, and then the coater die is moved further by the distance measured by the roller, thereby allowing the coater die to be accurately positioned at the intended location.
[0051]
[0052] FIG. 1 is a drawing showing the application of electrode slurry to an electrode foil through an electrode coating device.
[0053] FIG. 2 is a drawing showing the application of electrode slurry with the coater die offset to one side (left side based on the drawing).
[0054] FIG. 3 is a simplified drawing illustrating the electrode coating device provided by the present invention.
[0055] FIG. 4 is a drawing showing a block diagram of the control unit.
[0056] FIG. 5 is a diagram showing the sequence in which the control unit operates.
[0057] FIG. 6 is a drawing showing the position of the first sensor and the second sensor changed to a different point compared to FIG. 3.
[0058] FIG. 7 is a drawing showing the sub-die and the third sensor additionally arranged in the state of FIG. 6.
[0059] FIG. 8 is a drawing showing the electrode being fed into an electrode dryer in the state of FIG. 6.
[0060] FIG. 9 is a drawing showing a plurality of coater dies aligned on a single coater roller.
[0061] FIG. 10 is a drawing showing the detection of the sliding amount of each coater die through a ruler after the alignment of each coater die in FIG. 9 is achieved.
[0062]
[0063] Hereinafter, the present invention will be described in detail with reference to the attached drawings so that those skilled in the art can easily implement it. However, the present invention may be embodied in various different forms and is not limited to the embodiments described herein.
[0064] To clearly explain the present invention, parts unrelated to the explanation have been omitted, and the same reference numerals are used for identical or similar components throughout the specification.
[0065] Furthermore, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.
[0066] The present invention relates to an electrode coating apparatus and an electrode coating method capable of accurately selecting the position of a coater die (and / or the position of a coater roller) so that an electrode slurry can be accurately applied to a target area.
[0067] FIG. 3 is a simplified drawing illustrating the electrode coating device provided by the present invention, FIG. 4 is a block diagram illustrating the control unit, and FIG. 5 is a drawing showing the sequence of operation of the control unit. FIG. 6 is a drawing illustrating the position of the first sensor and the second sensor changed to a different point compared to FIG. 3, FIG. 7 is a drawing illustrating the sub-die and the third sensor additionally arranged in the state of FIG. 6, and FIG. 8 is a drawing illustrating the electrode being fed into the electrode dryer in the state of FIG. 6. In addition, FIG. 9 is a drawing illustrating a plurality of coater dies aligned on a single coater roller, and FIG. 10 is a drawing illustrating the sliding amount of each coater die detected through a roller after the alignment of each coater die in FIG. 9 is achieved. Hereinafter, embodiments provided by the present invention will be described in more detail with reference to the attached drawings.
[0068]
[0069] Example 1
[0070] The present invention provides an electrode coating device for applying an electrode slurry to the surface of an electrode foil (1a) as Example 1.
[0071] The electrode coating device (100a) provided in this embodiment includes a coater roller (10), a coater die (20), a first sensor (11), a second sensor (21), and a control unit (50).
[0072] The above coater roller (10) rotates in a state of surface contact with the electrode foil (1a) while the electrode foil (1a) is moving, so that the electrode foil (1a) can change direction and move.
[0073] The above coater die (20) is positioned close to the coater roller (10) to apply electrode slurry to the electrode foil (1a). The coater die (20) receives electrode slurry through a tank (2: see FIG. 1) in which electrode slurry is stored, and a pump (3) that generates a predetermined flow pressure to move the electrode slurry and a flow meter (4) that detects the flow pressure may be installed in the supply line. In addition, an adjustment device that adjusts the gap between the coater die (20) and the electrode foil (1a), a vision device that checks the application state of the electrode slurry, a sensing device, a monitoring device, a control device, etc. may be additionally installed.
[0074] As described above, the above coater roller (10) rotates while the electrode foil (1a) moves while in contact with the outer surface of the electrode foil (1a), and the position is confirmed through the first sensor (11).
[0075] That is, the first sensor (11) may be configured to confirm the position where the coater roller (10) is placed. Additionally, the first sensor (11) may be configured to measure the position of the coater roller (10) within the space where the electrode coating device (100a) is installed. For example, within the space where the coater roller (10) is located, the first sensor (11) may detect position information so that a specific point of the coater roller (10) can be displayed on X, Y, and Z coordinates (when considering the driving direction as the Y-axis, the width direction as the X-axis, and the up-down direction as the Z-axis with reference to FIG. 1), and transmit the detected data to the control unit (50) to be described later. However, depending on the case, it may be configured to detect the position in only one direction rather than all three directions. In this case, if only the position in one direction can be confirmed, the position placed along the width direction must be confirmed so that center alignment with the coater die (20) is possible along the width direction.
[0076] The above coater die (20) continuously applies electrode slurry while positioned perpendicular to the surface of the electrode foil (1a) at the point where the electrode foil (1a) bends (see FIG. 1). Since the electrode foil (1a) moves at a constant speed while the electrode slurry is discharged in a constant amount from the coater die (20), the electrode slurry can be applied evenly to the electrode foil (1a).
[0077] And, the position of the above-mentioned coater die (20) is confirmed through the second sensor (21). That is, the second sensor (21) can confirm the position where the coater die (20) is placed in the same way as the first sensor (11) and transmit data regarding the acquired position information to the control unit (50) to be described later.
[0078] The first sensor (11) and the second sensor (21) can be sensors that detect changes in resistance, changes in light intensity, changes in magnetic fields, etc., or sensors that optically identify positions, and any known sensors used in various industrial fields can be applied without being limited by type or size.
[0079] Meanwhile, at least one of the coater roller (10) and the coater die (20) (preferably both) is configured to slide along the width direction. Here, the width direction is the width direction of the electrode (1), and means the same direction as the length direction of the coater roller (10).
[0080] In addition, the control unit (50) communicates with the first sensor (11) to detect the position of the coater roller (10) and communicates with the second sensor (21) to detect the position of the coater die (20). Furthermore, the control unit (50) may also be connected to the first sliding unit (30) that slides the coater roller (20) and the second sliding unit (40) that slides the coater die (20), and configured to control the operation of the first sliding unit (30) and the second sliding unit (40).
[0081] Alternatively, the control unit (50) may calculate and provide information regarding the direction in which one of the coater roller (10) and the coater die (20) must move and the required amount of sliding for alignment (even without directly controlling the first sliding unit or the second sliding unit to slide the coater roller or coater die). Accordingly, such information may be provided to a separate device, and the device that acquires the information may be configured to reflect it in the process. For example, such information may also be utilized in a subsequent process of processing the electrode tab in the non-coated part (1b), where it is necessary to intentionally form one side of the non-coated part (1c) larger in order to process the electrode tab.
[0082] Accordingly, the control unit (50) is configured to receive position information of the coater roller (10) and the coater die (20), calculate the sliding amount of one of the coater die (20) and the coater roller (10) to slide, and determine whether alignment is possible, by including a receiving unit (51), a reference position selection unit (52), a reference position alignment unit (53), and a judgment unit (54) as shown in FIG. 4.
[0083] The receiving unit (51) receives position information of the coater roller (10) and position information of the coater die (20) from the first sensor (11) and the second sensor (21), respectively. That is, the control unit (50) is connected to the first sensor (11) and the second sensor (21), respectively, via wireless or wired connection to receive position information.
[0084] The reference position selection unit (52) selects a first reference position and a second reference position for the coater roller (10) and the coater die (20), respectively. Here, the first reference position and the second reference position are virtual positions provided for alignment in the coater roller (10) and the coater die (20), and can be arbitrarily determined at a specific point where relative position verification is easy. For example, as shown in FIG. 3, the reference position may be the center (C1, C2) of the coater roller (10) and the coater die (20), respectively, along the longitudinal direction. Alternatively, it may be a point spaced apart from one end of the coater roller (10) or the coater die (20), respectively. Alternatively, it may be selected as another arbitrary point where relative position identification is easy. In addition, the first reference position and the second reference position may be the positions where the first sensor (11) and the second sensor (21) are placed, respectively.
[0085] Accordingly, the first reference position and the second reference position may be determined to be located at the center of each of the coater roller (10) or coater die (20) along the longitudinal direction as shown in FIG. 3. Alternatively, the first reference position and the second reference position may be formed at a point spaced a certain distance from one end of each of the coater roller (10) or coater die (20) as shown in FIG. 6, 7, and 8.
[0086] The reference position alignment unit (53) aligns the first reference position of the coater roller (10) and the second reference position of the coater die (20) with each other. The reference position alignment unit is connected to control the first sliding unit (30) and the second sliding unit (40) to be described later, and slides at least one of the coater roller (10) and the coater die (20) so that alignment is achieved by controlling the operation of the first sliding unit (30) and / or the second sliding unit (40).
[0087] The above judgment unit (54) determines whether the coater roller (10) and the coater die (20) are aligned after the sliding is performed. That is, it determines whether the coater roller (10) and the coater die (20) are aligned based on the position information received from the first sensor (11) and the second sensor (21).
[0088] Accordingly, in the present invention, the control unit (50), as shown in FIG. 5, receives position information of the coater roller (10) and the coater die (20) to determine the current position and selects a first reference position and a second reference position, respectively, to check for alignment. At this time, the first reference position and the second reference position are each placed with a first sensor (11) and a second sensor (21). Then, one of the coater roller (10) and the coater die (20) is slid to ensure alignment of the first sensor (11) and the second sensor (21). After the slid is completed, the system is configured to check for alignment of the coater die (20) and the coater roller (10).
[0089] In addition, as described above, the coater roller (10) and the coater die (20) may be configured to slide through other devices or other methods, but this embodiment includes a first sliding part (30) and a second sliding part (40) that slide the coater roller (10) and the coater die (20).
[0090] That is, the first sliding part (30) is controlled by the control unit (50) and configured to slide the coater roller (10), and the second sliding part (40) is controlled by the control unit (50) and configured to slide the coater die (20).
[0091] The first sliding section (30) and the second sliding section (40) may be configured to slide the coater roller (10) and the coater die (20) along the width direction of the electrode, which is the longitudinal direction of the coater roller (10) and the coater die (20), using electricity, hydraulics, pneumatics, etc. Of course, the first sliding section (30) and the second sliding section (40) may also be configured to slide the coater roller (10) and the coater die (20) in other directions (e.g., the driving direction of the electrode, the width direction of the electrode, the up and down direction, etc., as shown in FIG. 1).
[0092] And, the first sliding part (30) includes a first motor (31), and the second sliding part (40) includes a second motor (41). The judgment part of the control unit (50) can detect and control the sliding amount of the coater roller (10) and the sliding amount of the coater die (20) by detecting the rotational speed of the first motor (31) and the second motor (41). Accordingly, the coater roller (10) and the coater die (20) can slide to a more accurate position.
[0093] In addition, this embodiment further includes a ruler (60) capable of detecting the amount of sliding of the coater die (10) and / or the distance between the coater die (20) and the second sensor (21). The ruler (60) may be a known measuring device and is configured to verify the actual sliding distance by independently measuring the distance from the initial position to the position where sliding is completed. At this time, by verifying the initial position where the ruler (60) is placed, the distance between the second sensor (21) and the coater die (20) and the amount of change in distance can also be known. The distance between the second sensor (21) and the coater die (20) may be selected as either the distance from the end of the coater die (20) to the second sensor (21) or the distance from the center of the coater die (20) to the second sensor (21). Accordingly, the control unit (50) can re-verify the sliding distance and alignment status of the coater roller (10) and coater die (20) based on the information confirmed through the ruler (60), and, if applicable, can perform feedback control to allow additional sliding of the coater roller (10) or coater die (20). In addition, it can determine whether a failure has occurred in the first motor (31) or the second motor (41). Therefore, for the reasons described above, the first motor (31) and the second motor (41) are servo motors or stepper motors capable of detecting rotational speed.
[0094] In addition, the ruler (60) detects the distance between the coater die (20) and the second sensor (21). Therefore, even if the first sensor (11) and the second sensor (21) are each spaced apart from the center of the coater roller (10) and the coater die (20), the coater die (20) can be accurately aligned with the coater roller (10). That is, even if the second sensor (21) moves to align with the first sensor (11), since the initial distance between the second sensor (21) and the coater die (20) is measured by the ruler (60), accurate alignment is possible even if the coater die (20) is moved sequentially after the second sensor (21) is moved.
[0095] Meanwhile, when manufacturing the electrode, depending on the placement position of the electrode tab, there are cases where the width of one side of the uncoated portion is intentionally formed to be larger than the width of the other side of the uncoated portion. For example, there are cases where the arrangement of the coater die (20) is intentionally formed such that the width of the left uncoated portion (1c) is narrow and the width of the right uncoated portion (1c) is wide, as in the structure of FIG. 2.
[0096] At this time, after aligning the coater die (20) and the coater roller (10) through the first sensor (11) and the second sensor (21), the coater die (20) can be accurately positioned at an intended location by additionally moving the coater die (20) by the distance (r) measured by the roller (60). Referring to FIG. 3, the reference position selection unit selects points that are divided along the length direction of the coater roller (10) and the coater die (20), that is, points that are the centers in the width direction (C1, C2), as the first reference position and the second reference position of the coater die.
[0097] And, the first sensor (11) is located on a virtual first extension line (V1) perpendicular to the longitudinal direction at the first reference position of the coater roller (10) and moves in conjunction with the coater roller (10), and the second sensor (21) is located on a virtual second extension line (V2) perpendicular to the longitudinal direction at the second reference position of the coater die (20) and moves in conjunction with the coater die (20). That is, the first extension line (V1) and the second extension line (V2) can be said to be virtual lines parallel to the driving direction shown in FIG. 1.
[0098] At this time, the judgment unit determines that the alignment of the coater roller (10) and the coater die (20) is achieved when the first sensor (11) and the second sensor (21) are aligned so that the first extension line (V1) and the second extension line (V2) come into contact.
[0099] That is, when the first sensor (11) and the second sensor (21) are arranged as in FIG. 3, the first sensor (11) may be located on a virtual first extension line (V1) perpendicular to the rotation axis (R) at the center of the rotation axis of the coater roller (10), and the second sensor (21) may be located on a virtual second extension line (V2) perpendicular to the longitudinal direction (i.e., the width direction of the electrode foil) of the coater die (20) at the center of the coater die (20). And, when the first extension line (V1) and the second extension line (V2) are each extended, alignment of the coater die (20) and the coater roller (10) may be achieved at an overlapping position.
[0100] For reference, in FIG. 3, the control unit (50) is shown separately, but the control unit (50) may be integrated into either the first sensor (11) or the second sensor (21). Accordingly, the first sensor (11) and the second sensor (21) may be configured to check the distance between each other in real time.
[0101] Meanwhile, in FIG. 3, the first sensor (11) and the second sensor (21) are shown positioned between the coater die (20) and the coater roller (10). However, since there is a possibility of interference with the application of the electrode slurry in this case, as shown in FIG. 6, the first sensor (11) and the second sensor (21) may be positioned spaced apart from each other by a certain distance from the ends of the coater die (20) and the coater roller (10).
[0102] That is, if there is no space available on the upper and lower sides of the coater die (20) and the coater roller (10), respectively, the first sensor (11) and the second sensor (21) can be positioned along the width direction of the electrode (1) in the electrode coating device (100b), as shown in FIG. 6.
[0103] Accordingly, the reference position selection unit selects points spaced apart along each longitudinal direction as the first reference position of the coater roller and the second reference position of the coater die, and the first sensor (11) is positioned on a virtual first extension line (V1) perpendicular to the longitudinal direction at the first reference position of the coater roller (20) and moves in conjunction with the coater roller (10), and the second sensor (21) is positioned on a virtual second extension line (V2) perpendicular to the longitudinal direction at the second reference position of the coater die (20) and moves in conjunction with the coater die.
[0104] At this time, the first distance (d1) from the center (C1) of the coater roller (10) to the first sensor (11) and the second distance (d2) from the center (C2) of the coater die (20) to the second sensor (21) are formed identically.
[0105] Accordingly, the above-mentioned judgment unit can determine that the first sensor (11) and the second sensor (21) are aligned so that the first extension line (V1) and the second extension line (V2) come into contact even in this configuration, and that the alignment of the coater roller (10) and the coater die (20) is achieved. That is, as described above, since the point where the first sensor (11) is located can be the first reference position and the point where the second sensor (21) is located can be the second reference position, when the first sensor (11) and the second sensor (21) are aligned, the first reference position and the second reference position can be considered to be aligned.
[0106] The first extension line (V1) and the second extension line (V2) were moved in the width direction in contrast to the structure in which the first reference position and the second reference position are formed at the center, but since each was moved by the same spacing distance (d1, d2), there is no problem in checking the alignment state of the coater roller (10) and the coater die (20).
[0107] In addition, an insulator (1d) is applied to a portion of the electrode foil (1a) where the electrode slurry is not applied, i.e., the uncoated portion (1c). That is, the electrode (1), manufactured as an anode or a cathode, is cut to a suitable size and laminated together with a separator. At this time, if the separator shrinks due to heat, a short circuit may occur (causing contact between the anode and the cathode). To prevent this, an insulating layer (1d) having electrical insulating properties may be applied to the uncoated portion (1c) during electrode manufacturing. For reference, the insulating layer (1d) may also be applied by manufacturing it in the form of a tape and adhering it so that it can be removed in a subsequent process.
[0108] Accordingly, the electrode coating device (100c) provided in this embodiment further includes a sub-die (70: 70a, 70b) for applying an insulator (1d) to a blank area (1c) on the electrode foil (1a) where the electrode slurry is not applied. And, the position of the sub-die (70) is determined according to the position of the coater roller (10) detected by the first sensor (1) or the position of the coater die (20) detected by the second sensor (21).
[0109] Referring to FIG. 7, the sub-die (70) is positioned at a point where the untreated portion (1c) is located after the electrode slurry is applied along the path where the electrode (1) moves. The sub-die (70) is positioned at each of the untreated portions (1c) on both sides (or at one of the two locations) to apply an insulator (1d) in the form of a liquid or gel, or to attach an insulator (1d) in the form of a tape.
[0110] That is, just as the first sensor (11) checks the position of the coater roller (10) and the second sensor (21) checks the position of the coater die (20), the control unit (50) can also detect the position of the sub-die (70) through the third sensor (71: 71a, 71b). Therefore, after the alignment of the coater roller (10) and the coater die (20) is achieved through the first sensor (11a) and the second sensor (21), the position of the sub-die (70) can be determined at the point where the alignment of the first extension line (V1a, V1b) and the third extension line (V4a, V4b), which is extended to the third reference position where the third sensor (71) is located, is achieved.
[0111] In addition, similar to the configuration of the first sliding section (30) or the second sliding section (40), the sub-die (70) may also be configured to slide by a third sliding section (not shown). At this time, the actual sliding distance of the sub-die (70) can also be measured through additionally provided rulers (80). Furthermore, since the distance between the sub-dies (70a, 70b) and each third sensor (71a, 71b) can be determined through the rulers (80), the sub-dies (70a, 70b) can more accurately control the application or attachment position of the insulator (1d).
[0112] In addition, the electrode coating device (100d) further includes an electrode dryer (90). The electrode dryer (90) is configured so that the electrode (1) coated with electrode slurry enters and the electrode slurry is dried. At this time, the position where the electrode foil (1a) is fed into the inlet (91) of the electrode dryer (90) is determined by aligning it with the position of the coater roller (10) detected by the first sensor (11).
[0113] That is, referring to FIG. 8, the electrode foil (1a) is fed into an electrode dryer (90) so that curing can occur after the electrode slurry and insulating layer (1d) are applied. The electrode dryer (90) dries (cures) the electrode slurry (and insulating layer) applied to the electrode foil (1a) by applying heat or irradiating light that causes photocuring.
[0114] At this time, since the position of the electrode dryer (90) and the input port (90) into which the electrode foil (1a) is fed is known, the position at which the electrode foil (1a) is fed into the electrode dryer (90) can be determined by aligning it with the position of the coater roller (10) detected by the first sensor (11). That is, the position of the coater roller (10) (and the position of the coater die) can be adjusted according to the position into which it is fed into the electrode dryer (90). At this time, the distance traveled by the electrode (1) can also be measured through an additionally provided ruler (92). Meanwhile, the ruler (92) may be configured to measure the distance between the electrode and any one of the first sensor (11), the second sensor (21), and the third sensor (71).
[0115] For reference, the electrode roll (not shown) that continuously supplies the electrode foil (1a) by winding (unwinding) the electrode foil (1a) into a cylindrical shape according to the principle described above can also be configured to be aligned with the coater roller (10) (and / or coater die).
[0116] Referring to FIGS. 9 and 10, in the present invention, a plurality of coater dies (20) are provided and can be arranged side by side toward the coater roller (10).
[0117] That is, a single electrode foil (1a) with a large width is provided, and an electrode slurry is applied to each of the multiple regions of the electrode foil (1a) to form multiple retaining parts (1ba, 1bb, 1bc), thereby manufacturing an electrode (1). Since this electrode (1) is cut and divided into appropriate sizes in a subsequent process, production efficiency can be increased compared to the method of manufacturing electrodes one by one.
[0118] That is, the electrode coating device (100e) may have a configuration in which, while the electrode foil (1a) moves through one of the coater rollers (10), the plurality of coater dies (20a, 20b, 20c) individually apply an electrode slurry to multiple areas of the electrode foil (1a).
[0119] When a plurality of coater dies (20a, 20b, 20c) are provided as above, only one first sliding part (30) for sliding the coater roller (10) is provided, whereas a second sliding part (40a, 40b, 40c) for sliding the coater dies (20a, 20b, 20c) is provided individually for each coater die (20a, 20b, 20c) so that each coater die (20a, 20b, 20c) can be slid individually.
[0120] And, as described above, the first sliding part (30) includes a first motor (31), and each of the second sliding parts (40a, 40b, 40c) also includes a second motor (41).
[0121] The above judgment unit determines the sliding amount of the coater roller (10) and the sliding amount of individual coater dies (20a, 20b, 20c) through the rotational speed of the motors (31, 41), and the above reference position alignment unit slides the plurality of coater dies to a predetermined position to align them. At this time, the position of each coater die (20a, 20b, 20c) can be confirmed through each second sensor (21a, 21b, 21c). That is, each second sensor (21a, 21b, 21c) selects a second extension line (V2, V2', V2'') at a position that can be aligned with the first extension line (V1), and by individually controlling the second sliding unit (40a, 40b, 40c), alignment with the coater roller (10) can be achieved.
[0122] At this time, as illustrated in FIG. 10, the electrode coating device (100f) of the present invention can additionally verify whether each coater die (20a, 20b, 20c) is placed in an accurate position by detecting the sliding amount of the coater die (20a, 20b, 20c) moved by the second sliding part (40a, 40b, 40c) and the distance between the coater die (20a, 20b, 20c) and each second sensor (21a, 21b, 21c) through the rulers (60a, 60b, 60c).
[0123] Alternatively, in such a configuration, only one selected (20b) among the coater dies (20a, 20b, 20c) is aligned with the coater roller (10), and then the remaining coater dies (20a, 20c) are slid with the aligned coater die (20b) for a predetermined length, thereby aligning the centers (C2a, C2b, C2c) of the coater dies with the corresponding positions (C1a, C1b, C1c) of the coater roller. However, in this case, the control unit (50) must be configured to recognize the positions where each roller (60a, 60b, 60c) is placed and to control the first sliding unit (30) and the second sliding unit (40a, 40b, 40c) by reflecting this.
[0124] Therefore, in this invention, a ruler (60) is additionally included so that the sliding amount of each coater die can be checked in real time and more accurately and quickly whether it is aligned at a predetermined position.
[0125] And, as described above, since the ruler (60) can detect the distance between the coater die and the second sensor (21), each ruler (60a, 60b, 60c) can detect the distances (r1, r2, r3) between the corresponding coater dies (20a, 20b, 20c) and the second sensors (21a, 21b, 21c).
[0126] Therefore, even if some of the coater dies (20a, 20c) are spaced apart from the center of the coater roller (10) and the coater die (20), the coater dies (20a, 20c) can also be accurately aligned with the coater roller (10). That is, even if the left coater die (20a) in Fig. 10 is spaced apart from the corresponding second sensor (21a), the second sensor (21a) paired with the coater die (20a) can confirm the distance (r1) separated through the roller (60a), so alignment can be achieved with respect to the coater roller (10). In addition, the right coater die (20c) in Fig. 10 can also be aligned in the same way.
[0127] That is, since the distances (r1, r2, r3) between the coater dies (20a, 20b, 20c) and their paired second sensors (21a, 21b, 21c) can be accurately known through the rulers (60a, 60b, 60c), when the second sensors (21a, 21b, 21c) are aligned with the first sensor (11), each coater die (20a, 20b, 20c) can be aligned to be accurately placed at the intended position.
[0128] In addition, as described above, even when position adjustment of the coater dies (20a, 20b, 20c) is required to adjust the width of the non-coating area, the distances (r1, r2, r3) between the coater dies (20a, 20b, 20c) and their paired second sensors (21a, 21b, 21c) can be verified through the rulers (60a, 60b, 60c), so that each coater die (20a, 20b, 20c) can be moved additionally by the distance required for adjustment and accurately positioned at the intended location.
[0129]
[0130] Example 2
[0131] In addition, the present invention provides an electrode coating method applicable to the above electrode coating device as a second embodiment.
[0132] The electrode coating method provided in this embodiment includes a coater roller position verification step, a coater die position verification step, an alignment preparation step, an alignment step, and a judgment step.
[0133] In the above coater roller position verification step, the first reference position of the coater roller (10) that moves the electrode foil (1a) is verified through the first sensor (11). Then, in the above coater die position verification step, the second reference position of the coater die (20) that applies the electrode slurry to the electrode foil (1a) is verified through the second sensor (21).
[0134] In the above alignment preparation step, the first reference position of the coater roller (20) and the second reference position of the coater die are detected, and a choice is made between the coater roller (10) and the coater die (20) to slide. Typically, it may be more desirable to slide the coater die (20) rather than the coater roller (10), but as described above, if adjustment of the position of the sub-die (70) and the input position of the electrode dryer (90) is required, it may be decided to slide the coater roller (10).
[0135] And, in the alignment step, the coater roller (10) and the coater die (20) are slid so that one of them is aligned with the other. As described above, the alignment step can be achieved by controlling the first sliding part (30) and / or the second sliding part (40), and since the control unit (50) can calculate the sliding distance through the rotational speed of the first motor (31) and / or the second motor (41), the coater roller (10) or the coater die (20) can be slid to an accurate alignment position.
[0136] In addition, in the above judgment step, the alignment status of the coater roller (10) and the coater die (20) is determined by comparing the first reference position and the second reference position. This step can be performed through a ruler (60) that detects the actual sliding distance of the coater die (20). That is, the actual alignment status can be verified by comparing the actual travel distance detected by the ruler with the travel distance measured by the control unit (50).
[0137] In addition, as described above, in a structure in which multiple coater dies are individually positioned in close proximity to a single coater roller, the second reference positions of the multiple coater dies are confirmed through each second sensor in the coater die position verification step, and the alignment of the coater roller and the coater dies is achieved by individually sliding each coater die to move to predetermined positions in the alignment step.
[0138] In an electrode manufactured by the above method, the retaining portion and the non-retaining portion can be accurately formed at predetermined positions on the surface of the electrode foil.
[0139] Meanwhile, in the alignment step above, the amount of sliding of each coater die (20a, 20b, 20c) and / or the distance between each coater die (20a, 20b, 20c) and each second sensor (21a, 21b, 21c) can be detected.
[0140] Therefore, since the coater dies (20a, 20c) that are spaced apart to one side or the other and are not aligned with the center of the coater roller (20) can determine the distance from each of the second sensors (21a, 21c), alignment can be achieved by spaced apart from the point where the second sensors (21a, 21c) are aligned with the first sensor (11) by the original spaced distances (r1, r3).
[0141] In addition, as described above, if width adjustment of the non-removable parts is required, an additional moving step of additionally moving at least one of the above coater dies (20a, 20b, 20c) may be further included.
[0142] That is, in this embodiment, since the distances (r1, r2, r3) between the coater dies (20a, 20b, 20c) and their paired second sensors (21a, 21b, 21c) can be accurately known through the rulers (60a, 60b, 60c), each coater die (20a, 20b, 20c) can be moved additionally by the distance required for adjustment and accurately positioned at the intended location.
[0143] In the present invention having the above configuration, the position of the coater die (20) can be determined based on the position of the coater roller (10) or the position of the coater roller (10) can be determined based on the coater die (20). Therefore, compared to the conventional method in which the position of the coater die is determined by relying on the operator's visual inspection, the selection of the electrode slurry application position can be made more accurately and more quickly.
[0144] In the present invention, a first reference position and a second reference position are selectively selected to suppress interference between the first sensor (11) and the second sensor (21) caused by the arrangement of the coater roller and the coater die.
[0145] In the present invention, the control unit (50) is configured to be included within the first sensor or the second sensor or to communicate wirelessly, which can simplify the structure and reduce the installation space.
[0146] In addition, in the present invention, since the first reference position of the coater roller can be confirmed through the first sensor (11), the placement position of the sub-die (70) for applying the insulator can be determined more accurately, and the position where the electrode foil coated with the electrode slurry enters the electrode dryer can also be determined more accurately.
[0147] The first sliding part that slides the coater roller and the second sliding part that slides the coater die are driven by a motor capable of detecting the amount of rotation (e.g., a stepper motor, a servo motor, etc.), so that the control unit can more accurately detect and control the amount of sliding of the coater die and / or the coater roller.
[0148] In addition, the present invention is further provided with a ruler that detects the sliding amount of the coater die, so that the alignment status can be checked more accurately. Accordingly, feedback control of the first sliding section and / or the second sliding section is possible. In addition, the gap between adjacent coater dies can also be checked through the ruler.
[0149] That is, in the present invention, even if a plurality of coater dies are provided, each coater die can be more accurately aligned to a predetermined position through a configuration that includes a control unit that detects the sliding amount of a motor and a ruler that detects the actual sliding amount of a coater die.
[0150] In addition, since the roller can detect the distance between the coater die and the second sensor, even if the first sensor and the second sensor are each spaced apart from the center of the coater roller and the coater die, the coater die can be accurately aligned with the coater roller.
[0151] In particular, when manufacturing an electrode, there are cases where the width of the uncoated portion on one side and the width of the uncoated portion on the other side are formed differently. In this case, the coater die and the coater roller are aligned so that their centers coincide, and then the coater die is moved further by the distance measured by the roller, thereby allowing the coater die to be accurately positioned at the intended location.
[0152] Although the present invention has been described above by limited embodiments and drawings, the present invention is not limited thereto, and various implementations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.
[0153]
[0154] [Explanation of the symbol]
[0155] 10 : Coater roller
[0156] 11: First sensor
[0157] 20 : Coater die
[0158] 12: Second sensor
[0159] 30: 1st slide section
[0160] 40: 2nd slide section
[0161] 50 : Control unit
Claims
1. An electrode coating device for applying an electrode slurry to the surface of an electrode foil, Coater roller that rotates while the electrode foil moves in a surface contact state; A first sensor for detecting the position of the above-mentioned coater roller; A coater die positioned in close proximity to the coater roller and applying an electrode slurry to the electrode foil; A second sensor for detecting the position of the above-mentioned coater die; and A control unit that communicates with the first sensor to receive position information of the coater roller and communicates with the second sensor to receive position information of the coater die; is included. At least one of the above coater roller and the above coater die is capable of sliding, and The above control unit is an electrode coating device that determines whether the coater roller and the coater die are aligned based on the position information of the coater roller and the position information of the coater die.
2. In Paragraph 1, The above control unit is, A receiving unit that receives position information of the coater roller and position information of the coater die from the first sensor and the second sensor, respectively; A reference position selection unit for selecting a first reference position and a second reference position, respectively, on the coater roller and the coater die; A reference position alignment unit that aligns the above coater roller, the above first reference position, and the above second reference position of the coater die with each other; and An electrode coating device comprising: a determination unit for determining whether the above-mentioned coater roller and the above-mentioned coater die are aligned.
3. In Paragraph 2, The above reference position selection unit is, Points that are divided along each longitudinal direction are selected as the first reference position of the coater roller and the second reference position of the coater die, and The first sensor above is, It is located on a virtual first extension line perpendicular to the longitudinal direction at the first reference position of the above-mentioned coater roller and moves in conjunction with the above-mentioned coater roller, and The second sensor mentioned above is, It is located on a virtual second extension line perpendicular to the longitudinal direction at the second reference position of the above-mentioned coater die, and moves in conjunction with the above-mentioned coater die, The above judgment unit is, An electrode coating device that determines that the alignment of the coater roller and the coater die is achieved when the first sensor and the second sensor are aligned so that the first extension line and the second extension line come into contact.
4. In Paragraph 2, The above reference position selection unit is, Points spaced apart along each longitudinal direction are selected as the first reference position of the coater roller and the second reference position of the coater die, and The first sensor above is, It is located on a virtual first extension line perpendicular to the longitudinal direction at the first reference position of the above-mentioned coater roller and moves in conjunction with the coater roller, The second sensor mentioned above is, It is located on a virtual second extension line perpendicular to the longitudinal direction at the second reference position of the above-mentioned coater die and moves in conjunction with the coater die, The first separation distance from the center of the coater roller to the first sensor and the second separation distance from the center of the coater die to the second sensor are formed identically, and The above judgment unit is, An electrode coating device that determines that the alignment of the coater roller and the coater die is achieved when the first sensor and the second sensor are aligned so that the first extension line and the second extension line come into contact.
5. In Paragraph 1, The above control unit is, An electrode coating device included inside either of the first sensor and the second sensor.
6. In Paragraph 1, The above control unit is, An electrode coating device that communicates wirelessly with at least one of the first sensor and the second sensor.
7. In Paragraph 1, A sub-die for applying an insulator to a point on the electrode foil where the electrode slurry is not applied; further comprising The above subdie is, An electrode coating device in which the placement position is determined according to the position of the coater roller detected by the first sensor or the position of the coater die detected by the second sensor.
8. In Paragraph 1, The apparatus further includes an electrode dryer that dries the electrode slurry as the electrode foil coated with the electrode slurry passes through it. The above electrode foil is, An electrode coating device in which the position to be fed into the electrode dryer is determined by matching the position of the coater roller detected by the first sensor.
9. In Paragraph 1, A first sliding unit controlled by the above-mentioned control unit and sliding the above-mentioned coater roller; and It includes a second sliding unit that is controlled by the above-mentioned control unit and slides the above-mentioned coater die; and The first sliding part includes a first motor, and the second sliding part includes a second motor, and The above judgment unit is, An electrode coating device that determines the sliding amount of the coater roller and the sliding amount of the coater die through the rotational speeds of the first motor and the second motor.
10. In Paragraph 1, An electrode coating device further comprising a ruler that detects the sliding amount of the coater die or the distance between the coater die and the second sensor.
11. In any one of paragraphs 1 through 8, The above coater dies are provided in multiple numbers and are arranged side by side toward the coater roller, While the electrode foil moves through one of the aforementioned coater rollers, The above plurality of coater dies, An electrode coating device for individually applying electrode slurry to multiple areas of the electrode foil.
12. In Paragraph 11, A first sliding unit controlled by the above-mentioned control unit and sliding the above-mentioned coater roller; and It includes a second sliding unit that is controlled by the above-mentioned control unit and slides the above-mentioned coater die; and The first sliding part includes a first motor, and the second sliding part includes a second motor. The above second sliding section is provided in multiple numbers and is connected to each of the multiple coater dies one by one, and The above plurality of coater dies are individually slid by the connected second sliding part, and The above judgment unit is, The sliding amount of the coater roller and the sliding amount of individual coater rollers are determined through the rotational speed of the motor. The above reference position alignment unit is, An electrode coating device that slides and aligns the above-mentioned plurality of coater dies to a predetermined position.
13. In Paragraph 11, An electrode coating device comprising: a ruler that detects the amount of sliding of the coater die moved by the second sliding part or the distance between the coater die and the second sensor.
14. An electrode coating method for applying an electrode slurry to the surface of an electrode foil, wherein Coater roller position verification step of verifying the first reference position of the coater roller that moves the electrode foil through a first sensor; A coater die position verification step for verifying a second reference position of a coater die that applies an electrode slurry to the electrode foil using a second sensor; An alignment preparation step for detecting a first reference position of the coater roller and a second reference position of the coater die, and selecting which of the coater roller and the coater die to slide; An alignment step of sliding the other so that it is aligned with either of the above coater roller and coater die; and An electrode coating method comprising: a determination step of determining whether the coater roller and the coater die are aligned by comparing the first reference position and the second reference position.
15. In Paragraph 14, A plurality of coater dies are individually arranged in close proximity on the above coater roller, and In the above coater die position verification step, multiple second reference positions of coater dies are verified through each second sensor, and An electrode coating method in which alignment of the coater roller and the coater dies is achieved by sliding each coater die individually in the alignment step to move them to predetermined positions.
16. In Paragraph 15, An electrode coating method in which the amount of sliding of each coater die or the distance between each coater die and each second sensor is detected in the above alignment step.
17. In Paragraph 15, An electrode coating method further comprising: an additional movement step in which the distance between the coater dies and the second sensor is detected in the alignment step above, and at least one of the coater dies is additionally moved.
18. Electrode manufactured by the electrode coating method of claim 14.