Electrode traveling device

Abstract

The present invention relates to an electrode running device, and more particularly to an electrode running device that, when the width of an electrode is changed due to a change in the type of electrode, etc., and the positions of the electrode running rollers through which the electrode passes must be corrected, can easily move the electrode running rollers or position them on the same line by collectively adjusting the positions of the electrode running rollers, thereby reducing the time and energy spent on rearranging the electrode running rollers and simplifying the work, thereby improving the efficiency of the entire process. The electrode running device of the present invention, which runs an electrode coated with an active material, includes a main base, a sub-base spaced parallel to the main base, a shaft extending from the sub-base to the opposite side of the main base, an electrode running roller that rotates relative to the shaft and contacts the electrode, and a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base.

Description

[Technical Field]

[0001] This application claims the benefit of priority based on Korean Patent Application No. 10-2021-0183212, filed December 20, 2021, and all contents disclosed in the documents of that Korean patent application are incorporated herein by reference.

[0002] The present invention relates to an electrode traveling device, and more particularly to an electrode traveling device for traveling electrodes used in the manufacture of secondary batteries. [Background technology]

[0003] In recent years, with the depletion of fossil fuels causing rising energy costs and increasing concerns about environmental pollution, the demand for environmentally friendly alternative energy sources has become an essential factor for future life. As a result, research into various electricity production technologies such as solar, wind, and tidal power has continued, and there has also been great interest in power storage devices such as batteries to more efficiently use the electrical energy produced in this way.

[0004] Furthermore, with the increasing technological development and demand for battery-based electronic mobile devices and electric vehicles, the demand for batteries as an energy source is rapidly increasing, and as a result, much research is being conducted on batteries that can meet various demands.

[0005] Generally, batteries that store electrical energy can be divided into primary batteries and secondary batteries. While primary batteries are disposable, secondary batteries are rechargeable batteries made using materials that can undergo repeated oxidation and reduction processes between electric current and materials. In other words, when an electric current causes a reduction reaction on a material, the power source is charged, and when an oxidation reaction on the material occurs, the power source is discharged. Electricity is generated by repeating this charge-discharge cycle.

[0006] In particular, there is a high demand for lithium secondary batteries such as lithium ion batteries and lithium ion polymer batteries, which have advantages such as high energy density, discharge voltage, and output stability in terms of materials.

[0007] Unlike primary batteries, secondary batteries are rechargeable and are classified into coin-type batteries, cylindrical batteries, prismatic batteries, and pouch-type batteries depending on the shape of the case.

[0008] A cylindrical secondary battery includes an electrode assembly wound into a jelly roll shape, a case that houses the electrode assembly together with an electrolyte, and a cap assembly that seals the opening of the case. The electrode assembly typically used in cylindrical secondary batteries includes a positive electrode plate, a separator, and a negative electrode plate. The positive electrode plate comprises a positive electrode coating portion, where a positive electrode active material is coated on a positive electrode current collector, and an uncoated positive electrode uncoated portion. Similarly, the negative electrode plate comprises a negative electrode coating portion, where a negative electrode active material is coated on a negative electrode current collector, and an uncoated negative electrode uncoated portion. Electrode tabs are provided on the positive electrode uncoated portion and the negative electrode uncoated portion, respectively. A porous separator is interposed between the positive and negative electrode plates. The separator insulates the positive and negative electrode plates from each other while allowing active material ions to exchange between the plates, resulting in an electrochemical reaction. The positive electrode plate, the separator, and the negative electrode plate are sequentially stacked and wound up to form a jelly-roll-shaped electrode assembly.

[0009] In order to manufacture a jelly-roll-shaped electrode assembly used in a cylindrical secondary battery, or to inspect and add electrodes used in a secondary battery, a device for running the electrodes is required.

[0010] The electrode traveling device can include rollers through which the electrode passes, but in conventional electrode traveling devices, all of the rollers through which the electrode passes were formed on a single plate. Therefore, when the electrode width was changed by replacing the electrode, each roller had to be replaced to match the electrode width, and the position of each roller on the shaft had to be adjusted individually.

[0011] However, this method requires a lot of time for replacement and the work is complicated, which reduces the efficiency of the entire process. To solve this problem, there is a need for a method to reduce the time required and simplify the work when the roller position needs to be corrected due to a change in electrode width. Summary of the Invention [Problem to be solved by the invention]

[0012] The present invention has been devised to solve the above problems, and an object of the present invention is to provide an electrode traveling device that can collectively adjust the positions of electrode traveling rollers through which electrodes pass, thereby easily moving the electrode traveling rollers or positioning them in the same line, thereby reducing the time spent on repositioning the electrode traveling rollers when changing the electrode width, simplifying the work, and improving the efficiency of the entire process. Another object of the present invention is to provide an electrode traveling device that reduces meandering during electrode supply, contributing to stable product production. [Means for solving the problem]

[0013] The electrode running device according to the present invention is an electrode running device for running an electrode coated with an active material, and may include a main base, a sub-base spaced apart and parallel to the main base, a shaft extending from the sub-base to the opposite side of the main base, an electrode running roller that rotates relative to the shaft and comes into contact with the electrode, and a position adjuster disposed between the main base and the sub-base and that adjusts the gap between the main base and the sub-base.

[0014] The electrode running rollers may be coupled to the sub-base and axially fixed while rotating relative to the shaft. The electrode running roller may include a large diameter portion and a small diameter portion having a diameter smaller than that of the large diameter portion, and the distance between the sub-base and the large diameter portion may be closer than the distance between the sub-base and the small diameter portion. The electrode running roller may further include a tapered portion that connects the large diameter portion and the small diameter portion and whose diameter decreases toward the small diameter portion.

[0015] The position adjuster may include a nut provided to penetrate the main base, and a screw shaft provided to extend through the nut and fastened to the nut.

[0016] The electrode traveling device may further include a handle that penetrates the sub-base and is connected to the screw shaft, and rotates together with the screw shaft. The electrode traveling device may further include a position indicator disposed on the outer surface of the sub-base to indicate the distance between the sub-base and the main base, and a reference axis extending from the main base to pass through the position indicator.

[0017] The electrode traveling device may further include a cap attached to the shaft and disposed on the opposite side of the sub-base with the electrode traveling roller therebetween. The electrode traveling device may further include a guide shaft connected to the main base, extending through the sub-base in a direction toward the sub-base, and guiding movement of the sub-base. The electrode traveling device may further include a servo motor connected to the position adjuster and adjusting the operation of the position adjuster. [Effects of the Invention]

[0018] The electrode running device according to the present invention, which runs an electrode coated with an active material, includes a main base, a sub-base spaced apart and parallel to the main base, a shaft extending from the sub-base to the opposite side of the main base, an electrode running roller that rotates relative to the shaft and comes into contact with the electrode, and a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base.

[0019] Therefore, when the electrode width is changed due to a change in the type of electrode, etc., and the position of the electrode travel rollers through which the electrode passes needs to be adjusted, the electrode travel rollers can be easily moved or positioned in the same line by adjusting the positions of the electrode travel rollers all at once, reducing the time and energy spent on repositioning the electrode travel rollers, simplifying the work, and improving the efficiency of the entire process.In addition, meandering during electrode supply can be reduced, contributing to stable product production. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a front view schematically showing an electrode running device according to an embodiment of the present invention. [Figure 2] 1 is a side view schematically showing an electrode traveling device according to an embodiment of the present invention. [Figure 3] 10 is a side view schematically showing a case where the width of the electrode traveling by the electrode traveling device according to one embodiment of the present invention is increased. FIG. [Figure 4] FIG. 10 is a side view schematically showing an electrode traveling device according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0021] The present invention will now be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily understand and practice the preferred embodiments of the present invention. However, the present invention may be embodied in various different forms and is not limited to the following embodiments.

[0022] In order to clearly explain the present invention, detailed descriptions of parts that are not relevant to the explanation or related known technologies that may unnecessarily obscure the gist of the present invention will be omitted, and in this specification, when assigning reference symbols to components in each drawing, the same or similar reference symbols will be assigned to the same or similar components throughout the specification.

[0023] Furthermore, the terms and words used in this specification and claims should not be interpreted in a limited way to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, based on the principle that inventors can appropriately define the concepts of terms in order to best explain their inventions.

[0024] FIG. 1 is a front view that schematically shows an electrode running device 1 according to one embodiment of the present invention, and FIG. 2 is a side view that schematically shows the electrode running device 1 according to one embodiment of the present invention.

[0025] An electrode running device 1 according to one embodiment of the present invention is capable of running an electrode 12 having a portion of its surface coated with an active material 17. The electrode 12 is supplied from an electrode roll 11 on which the electrode 12 is wound in a roll, and the supplied electrode 12 comes into contact with an electrode running roller 300, and can be moved by the rotation of the electrode running roller 300.

[0026] 1 and 2, an electrode traveling device 1 according to one embodiment of the present invention may include a main base 10, a sub-base 100, a shaft 200, an electrode traveling roller 300, and a position adjuster 400.

[0027] Since the main base 10 is configured to be connected to various components of the electrode traveling device 1, the main base 10 may have a flat plate-like surface. In the past, all of the components required for running an electrode were formed on the main base 10. This made it difficult to adjust the components all at once. To solve this problem, the electrode running device 1 according to one embodiment of the present invention can include a sub-base 100 to adjust specific components all at once. The electrode running device 1 can also include multiple sub-bases 100 depending on the type and number of components to be adjusted.

[0028] The sub-base 100 may be disposed parallel to and spaced apart from the main base 10, and may have a flat, plate-like surface similar to the main base 10. Specifically, the sub-base 100 may have a plate-like surface with a smaller area than the main base 10, in order to move a specific component from the surface of the main base 10 while spaced apart from the main base 10.

[0029] The electrode traveling device 1 is provided with rollers for traveling the electrode 12, and requires an axis for rotating the rollers. As an example of such an axis, the electrode traveling device 1 of the present invention can include a shaft 200.

[0030] The shaft 200 may be formed to extend from the sub-base 100 to the opposite side of the main base 10. Since the electrode running roller 300 must be rotatable relative to the shaft 200, the shaft 200 may preferably have a cylindrical shape, although this is not necessarily limited thereto.

[0031] As an example of a configuration for running the electrode 12 by rotation, the electrode running device 1 of the present invention can include an electrode running roller 300. The electrode running roller 300 can be connected to the shaft 200, and can be connected in a form in which the shaft 200 passes through the center of the electrode running roller 300. The electrode running roller 300 connected in this manner can rotate relative to the shaft 200.

[0032] The electrode running roller 300 may have a cylindrical shape in order to come into contact with the electrode 12 and run the electrode 12. However, the shape is not necessarily limited to this.

[0033] The electrode traveling roller 300 can continue to rotate while the electrode traveling device 1 is operating and the electrode 12 is traveling. Because the electrode 12 travels in contact with the surface, the electrode traveling roller 300 needs to have its axial movement limited. As an example of a method for fixing the electrode traveling roller 300 in the axial direction, the electrode traveling roller 300 of the present invention can be connected to the sub-base 100 and fixed in the axial direction while rotating relative to the shaft 200.

[0034] Even when fixed to the sub-base 100, the electrode traveling roller 300 must be able to rotate with respect to the shaft 200. Therefore, the electrode traveling roller 300 may be connected to the sub-base 100 using components such as bearings. The method of connecting the electrode traveling roller 300 to the sub-base 100 using bearings is merely an example, and the components and methods for connecting the electrode traveling roller 300 and the sub-base 100 are not limited thereto, and other forms may also be applied.

[0035] The electrode 12 may travel with its surface coated with the active material 17. The active material 17 may be coated on a portion of the surface of the electrode 12, and the portion coated with the active material 17 may be the coated portion 12a, while the portion not coated with the active material 17 may be the uncoated portion 12b.

[0036] Since the uncoated portion 12b of the electrode 12 can be further processed while the electrode 12 is traveling by the electrode traveling device 1, a marginal space is required between the electrode traveling roller 300 and the uncoated portion 12b of the electrode 12. Therefore, the electrode traveling roller 300 of the present invention can include a large diameter portion 310 and a small diameter portion 320.

[0037] The small diameter portion 320 has a smaller diameter than the large diameter portion 310 , and can be formed so that the distance between the sub-base 100 and the large diameter portion 310 is closer than the distance between the sub-base 100 and the small diameter portion 320 .

[0038] The outer periphery of the large diameter portion 310 can contact the coated portion 12a of the electrode 12, and the outer periphery of the small diameter portion 320 can face the uncoated portion 12b of the electrode 12. Therefore, when the coated portion 12a of the electrode 12 runs in contact with the large diameter portion 310, a surplus space can be formed between the uncoated portion 12b of the electrode 12 and the small diameter portion 320. This allows the uncoated portion 12b to be easily processed. Therefore, the large diameter portion 310 and the small diameter portion 320 can have the effect of increasing the efficiency of additional operations such as machining required for the electrode 12.

[0039] The electrode traveling device 1 of the present invention may further include a processing device 13 used for additional work such as the above-mentioned processing. Since this differs depending on the type of processing, detailed explanations thereof will be omitted.

[0040] The electrode traveling device 1 according to one embodiment of the present invention may include a position adjuster 400 as an example of a configuration for collectively adjusting the components connected to the sub-base 100.

[0041] The position adjuster 400 is disposed between the main base 10 and the sub-base 100 and can adjust the distance between the main base 10 and the sub-base 100. That is, in the electrode running device 1 of the present invention, the electrode running rollers 300 can move along with the movement of the sub-base 100. Therefore, when the electrode running device 1 is provided with multiple electrode running rollers 300, even if the width of the electrode 12 is changed due to a change in the type of electrode 12, there is no need to replace or adjust each electrode running roller 300, and the positions of the electrode running rollers 300 can be corrected collectively by moving the sub-base 100 using the position adjuster 400.

[0042] The position adjuster 400 can adjust the distance between the main base 10 and the sub-base 100 by moving the sub-base 100. Therefore, the position adjuster 400 may have a form in which the length of the position adjuster 400 itself can be adjusted between the main base 10 and the sub-base 100, or the position adjuster 400 may have a form in which the distance is adjusted while moving through the main base 10 or the sub-base 100. When the electrode traveling device 1 is provided with a plurality of sub-bases 100, the sub-bases 100 can be linked with the respective position adjusters 400.

[0043] Among the above-described exemplary embodiments, the position adjuster 400 of the present invention may have a ball screw shape, as an example of a form in which the position adjuster 400 moves through the main base 10 to adjust the gap between the main base 10 and the sub-base 100. Specifically, the position adjuster 400 may include a screw shaft 410 and a nut 420.

[0044] The screw shaft 410 may be fixed to the sub-base 100 and may be movable together with the sub-base 100, and the nut 420 may be fixed to the main base 10. More specifically, the nut 420 may have a helical thread groove formed on its inner circumferential surface and may be provided to penetrate the main base 10, and the screw shaft 410 may have a thread groove formed on its outer circumferential surface opposite to the thread groove of the nut 420 and may be provided to extend through the nut 420.

[0045] Therefore, while the screw shaft 410 rotates, the thread grooves of the screw shaft 410 and the nut 420 engage with each other, causing the screw shaft 410 to perform linear motion in the axial direction. The linear motion of the screw shaft 410 in the axial direction allows the distance between the main base 10 and the sub-base 100 to be adjusted.

[0046] When the position adjuster 400 of the electrode traveling device 1 has a ball screw shape including a screw shaft 410 and a nut 420, the distance between the main base 10 and the sub-base 100 can be adjusted intuitively and easily.

[0047] When the position adjuster 400 has a ball screw shape and the screw shaft 410 rotates to adjust the distance between the main base 10 and the sub-base 100, a configuration is required that makes it easy to rotate the screw shaft 410. As an example of such a configuration, the electrode traveling device 1 according to one embodiment of the present invention may further include a handle 500.

[0048] The handle 500 may be connected to the screw shaft 410 by passing through the sub-base 100. Therefore, when the handle 500 is rotated, the screw shaft 410 may rotate together, and as the screw shaft 410 rotates, the screw shaft 410 and the nut 420 may be fastened to each other. That is, the handle 500 may adjust the linear movement of the screw shaft 410 by rotation, and further adjust the distance between the main base 10 and the sub-base 100.

[0049] The handle 500 may have a circular cross section for easy rotation, and may have an additional structure such as a handle. The handle 500 may have a shape commonly used in automobiles or mechanical devices.

[0050] If the electrode traveling device 1 includes a handle 500 connected to the screw shaft 410, the screw shaft 410 can be easily rotated, thereby providing the effect of easily correcting the position of the sub-base 100.

[0051] When adjusting the distance between the main base 10 and the sub-base 100 via the position adjuster 400, knowing the position of the sub-base 100 or the distance between the main base 10 and the sub-base 100 allows for efficient use of the position adjuster 400. Therefore, as an example of a configuration for efficient use of the position adjuster 400, the electrode traveling device 1 according to one embodiment of the present invention may further include a reference axis 800 and a position indicator 900.

[0052] The position indicator 900 can indicate the distance between the main base 10 and the sub-base 100. For example, the position indicator 900 can indicate the position of the sub-base 100 using the main base 10 as a reference point. The numerical value for the distance displayed by the position indicator 900 can be displayed electronically or in the form of a scale, which can vary depending on the type of position indicator 900 used.

[0053] The position indicator 900 may be arranged on the outer surface of the sub-base 100 so as to move along with the movement of the sub-base 100. Preferably, the position indicator 900 may be arranged on the upper surface of the sub-base 100 so that an operator can easily check the position indicator 900 when adjusting the distance between the main base 10 and the sub-base 100.

[0054] The reference shaft 800 is coupled to the main base 10 and can extend from the main base 10 to pass through the position indicator 900. Therefore, the position indicator 900 can move along the axial direction of the reference shaft 800.

[0055] Since the reference shaft 800 extends through the position indicator 900, the cross section of the reference shaft 800 may have the same shape as the cross section of the space formed in the position indicator 900. The reference shaft 800 may have a cylindrical shape to facilitate movement of the position indicator 900, but is not necessarily limited to this.

[0056] If the operator can check the distance between the main base 10 and the sub-base 100 through the position indicator 900, the process of adjusting the position of the sub-base 100 can be performed efficiently. In addition, the position values ​​of the sub-base 100 according to the type or width of the electrode 12 can be accumulated to form usable data.

[0057] In addition to the position adjuster 400, an embodiment of the present invention may further include a guide shaft 700 as an example of a configuration for connecting the main base 10 and the sub-base 100.

[0058] The guide shaft 700 is connected to the main base 10 and can extend through the sub-base 100 in a direction toward the sub-base 100. Since the guide shaft 700 passes through the sub-base 100, the sub-base 100 comes into contact with the outer circumferential surface of the guide shaft 700 and can move in the axial direction of the guide shaft 700.

[0059] The guide shafts 700 must guide the constant movement of the sub-base 100, so when there are multiple guide shafts 700 penetrating one sub-base 100, they can be arranged parallel to each other. Furthermore, when they are arranged together with the screw shaft 410, they can be arranged parallel to the screw shaft 410.

[0060] The guide shaft 700 may be formed in a cylindrical shape, but is not necessarily limited to this. The guide shaft 700 can share the load of the sub-base 100 borne by the position adjuster 400, and can assist the movement of the sub-base 100. This can improve the stability of the entire electrode traveling device 1.

[0061] FIG. 3 is a side view that schematically shows a case where the width of the electrode 12 traveling by the electrode traveling device 1 according to one embodiment of the present invention is increased. One of the purposes of the present invention is to collectively correct the positions of the electrode running rollers 300 when conditions such as the type of electrode 12 or the width of the electrode 12 change, and the form of collectively correcting the electrode running rollers 300 can be explained using an example in which the width of the electrode 12 increases.

[0062] 2 and 3, if the width of the electrode 12 is increased compared to the electrode 12 used in the previous process, the electrode running roller 300 can be moved in a direction toward the main base 10.

[0063] Specifically, the sub-base 100 and the electrode traveling roller 300 can be moved so that the position of the end of the uncoated portion 12b of the previously used electrode 12 coincides with the position of the end of the uncoated portion 12b of the replaced electrode 12. While the electrode 12 travels using the electrode traveling device 1, a tab formed on the uncoated portion 12b of the electrode 12 can be processed. To maintain the same position for processing the tab, the electrode traveling roller 300 can move based on the end of the uncoated portion 12b of the electrode 12. Conversely, if the width of the electrode 12 decreases, the electrode traveling roller 300 can move in a direction away from the main base 10. This is merely one example, and the direction of movement of the electrode traveling roller 300 in response to changes in the electrode 12 is not necessarily limited to this example.

[0064] FIG. 4 is a side view that schematically shows an electrode traveling device 1 according to another embodiment of the present invention. Hereinafter, detailed description of the same configuration as that of the electrode traveling device 1 according to one embodiment of the present invention will be omitted.

[0065] 4, the electrode running roller 300 of the electrode running device 1 of the present invention may further include a tapered portion 330 that connects the large diameter portion 310 and the small diameter portion 320 and has a diameter that decreases toward the small diameter portion 320. The tapered portion 330 may be formed diagonally when the electrode running device 1 is viewed from the side, or may be formed in a curved shape.

[0066] When the tapered portion 330 is formed between the large diameter portion 310 and the small diameter portion 320, it is possible to achieve the effect of reducing physical damage that may occur to the surface of the electrode 12 that comes into contact with the electrode running roller 300.

[0067] As an example of a configuration for closing the end of the shaft 200 that is not connected to the sub-base 100, the electrode running device 1 according to this embodiment can further include a cap 600.

[0068] The cap 600 can be attached to the shaft 200 and disposed on the opposite side of the sub-base 100 with the electrode running roller 300 therebetween. The cap 600 may have a cylindrical shape with a space formed in the center thereof through which the shaft 200 can pass, and may have the same diameter as the diameter of the small diameter portion 320 .

[0069] When the electrode traveling roller 300 is not connected to the sub-base 100, the cap 600 can fix the electrode traveling roller 300 so that it cannot move in the axial direction. In addition, the cap 600 can close the end of the shaft 200, thereby reducing interference with the shaft 200 during the process.

[0070] The electrode traveling device 1 can automate the adjustment of the gap between the main base 10 and the sub-base 100 using the position adjuster 400. As an example of a configuration for automation, the electrode traveling device 1 according to this embodiment can further include a servo motor 15.

[0071] The servo motor 15 is connected to the position adjuster 400 and can adjust the operation of the position adjuster 400. In this case, the position value of the sub-base 100 according to the type or width of the electrode 12 accumulated through the position indicator 900 can be provided to the servo motor 15 as usable data.

[0072] The electrode traveling device 1 according to this embodiment is configured to automate the operation of the position adjuster 400. Control devices, etc.The control device may further include a programmable logic controller (PLC), etc. This is only one example, and other components required for automation may be added.

[0073] The electrode traveling device 1 of the present invention may further include additional components necessary for processes performed while the electrode 12 is traveling. For example, it may further include components such as a buffer device for adjusting the traveling speed of the electrode 12 or a vision device for inspecting the surface of the electrode 12.

[0074] When the position of the electrode traveling rollers 300 through which the electrode 12 passes needs to be corrected due to changes such as a change in the type of electrode 12 or the width of the electrode 12, the electrode traveling device 1 of the present invention can adjust the position of the electrode traveling rollers 300 all at once. This reduces the time and energy spent on rearranging the electrode traveling rollers 300, simplifies the work, and improves the efficiency of the entire process.

[0075] Although the present invention has been described above using limited embodiments and drawings, the present invention is not limited thereto, and various implementations are possible within the scope equivalent to the technical concept of the present invention and the claims set forth below by a person having ordinary skill in the art to which the present invention pertains. [Explanation of symbols]

[0076] 1: Electrode traveling device 10: Main bass 11: Electrode roll 12: Electrode 12a: Coating section 12b: Plain section 13: Processing equipment 14: Winding device 15: Servo motor 17 :Active material 100: Sub-bass 200: Shaft 300: Electrode running roller 310: Large diameter section 320: Small diameter part 330: Tapered section 400: Position adjuster 410:Screw shaft 420: Nut 500:Handle 600: Cap 700: Guide shaft 800: Reference axis 900: Position indicator

Claims

1. An electrode running device that runs an electrode coated with an active material, The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, The electrode running roller is A large diameter portion; a small diameter portion having a diameter smaller than that of the large diameter portion, The electrode traveling device, wherein the distance between the sub-base and the large diameter portion is shorter than the distance between the sub-base and the small diameter portion.

2. The electrode running roller is The electrode running device according to claim 1 , further comprising a tapered portion connecting the large diameter portion and the small diameter portion, the diameter of which decreases as it approaches the small diameter portion.

3. An electrode traveling device for traveling an electrode coated with an active material, The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, The position adjuster is a nut provided through the main base; a screw shaft provided to extend through the nut and fastened to the nut.

4. The electrode traveling device according to claim 3 , further comprising a handle that penetrates the sub-base, is connected to the screw shaft, and rotates together with the screw shaft.

5. An electrode running device for running an electrode coated with an active material, comprising: The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, a position indicator disposed on an outer surface of the sub-base and indicating a distance between the sub-base and the main base; a reference shaft extending from the main base to pass through the position indicator.

6. An electrode running device for running an electrode coated with an active material, The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, The electrode traveling device further includes a cap attached to the shaft and positioned on the opposite side of the sub-base with the electrode traveling roller therebetween.

7. An electrode traveling device for traveling an electrode coated with an active material, comprising: The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, an electrode traveling device further including a guide shaft connected to the main base, extending through the sub-base in a direction toward the sub-base, and guiding movement of the sub-base;

8. An electrode traveling device for traveling an electrode coated with an active material, comprising: The main base and a sub-base disposed at a distance from the main base; a shaft extending from the sub-base away from the main base; an electrode running roller that rotates around the shaft and comes into contact with the electrode; a position adjuster disposed between the main base and the sub-base for adjusting the distance between the main base and the sub-base; Including, The electrode traveling device further includes a servo motor connected to the position adjuster and adjusting the operation of the position adjuster.

9. The electrode running roller is 9. An electrode traveling device according to any one of claims 1 to 8, coupled to the sub-base and axially fixed while rotating relative to the shaft.

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