Electrode discarding device

Abstract

A technical idea of the present invention is to provide an electrode discarding device comprising: a holder which comprises a holding block supporting the side portion of a bobbin around which an electrode sheet is wound, and is configured to rotate the bobbin so that the electrode sheet can be unwound from the bobbin; a cutter which cuts part of the electrode sheet unwound from the bobbin; and a discard box which accommodates a segment of the electrode sheet cut by the cutter, wherein the holding block comprises a rotating block, and a first connection blade which extends in a first direction perpendicular to a rotary shaft of the rotating block and is inserted into a first insertion recess of the bobbin.

Description

Electrode disposal device

[0001] The present invention relates to an electrode disposal device.

[0002] This application claims the benefit of priority from Republic of Korea Patent Application No. 10-2024-0088109, filed July 4, 2024, and all contents of the document in that Republic of Korea Patent Application are incorporated herein by reference.

[0003] With technological advancements and growing demand for mobile devices, the demand for secondary batteries is also rapidly increasing. Among these, lithium secondary batteries are widely used as a power source for various mobile devices and electronic products due to their high energy density, high operating voltage, and excellent storage and lifespan characteristics. Recently, as the application areas for secondary batteries have expanded, the demand for higher-capacity secondary batteries has skyrocketed.

[0004] The electrode process for secondary battery manufacturing includes a coating process, which coats a current collector with electrode active material to create electrode sheets; a roll pressing process, which presses the electrode sheets; a slitting process, which cuts the electrode sheets into a specified size and shape; and a notching process. Each process generates residual electrode sheets, which are then disposed of through a waste disposal process.

[0005] The technical problem to be solved by the present invention is to provide an electrode disposal device.

[0006] In order to solve the above-described problem, the technical idea of ​​the present invention provides an electrode disposal device including a holding block configured to support a side of a bobbin on which an electrode sheet is wound, and a holder configured to rotate the bobbin so that the electrode sheet is unwound from the bobbin; a cutter configured to cut a portion of the electrode sheet unwound from the bobbin; and a disposal box configured to receive a segment of the electrode sheet cut by the cutter; wherein the holding block includes a rotating block; and a first connecting blade extending in a first direction perpendicular to a rotation axis of the rotating block and inserted into a first insertion groove of the bobbin.

[0007] In exemplary embodiments, the holding block is characterized in that it further includes a second connecting blade that extends in a second direction that is perpendicular to the rotation axis of the rotating block and different from the first direction, and is inserted into a second insertion groove of the bobbin.

[0008] In exemplary embodiments, the holding block is characterized by further including a contact pad received in the hole of the first connecting blade and in contact with the bobbin.

[0009] In exemplary embodiments, the holder is configured to move the contact pad to adjust the height at which the contact pad protrudes from the first connecting blade.

[0010] In exemplary embodiments, the contact pad is characterized by comprising rubber.

[0011] In exemplary embodiments, the holder is configured to move the holding block between a working position and a standby position, wherein in the working position, the holding block supports the bobbin, and in the standby position, the holding block is spaced from the bobbin.

[0012] In exemplary embodiments, the invention further comprises a scale coupled to the waste box and configured to detect a weight of the waste box.

[0013] In exemplary embodiments, the invention further comprises a transport device configured to move the waste box and the scale.

[0014] In exemplary embodiments, the device further comprises a scale coupled to the waste box and configured to detect a weight of the waste box; and a transport device configured to move the waste box and the scale, wherein the transport device is configured to move the waste box and the scale to a disposal position when the weight of the waste box detected by the scale exceeds a reference weight.

[0015] In exemplary embodiments, the invention further comprises a touch roll in contact with the electrode sheet wound around the bobbin.

[0016] In exemplary embodiments, the cutter is characterized by including a support member that supports a portion of the electrode sheet released from the bobbin and a cutting knife configured to cut the electrode sheet while the support member supports the electrode sheet.

[0017] According to the electrode manufacturing device according to exemplary embodiments, the electrode disposal process can be automated, thereby improving the productivity of the electrode disposal process and preventing safety issues and accidents of workers.

[0018] The effects that can be obtained from the exemplary embodiments of the present invention are not limited to the effects mentioned above, and other effects not mentioned can be clearly derived and understood by those skilled in the art to which the exemplary embodiments of the present disclosure pertain from the following description. In other words, unintended effects resulting from practicing the exemplary embodiments of the present disclosure can also be derived by those skilled in the art from the exemplary embodiments of the present disclosure.

[0019] Figure 1 is a schematic diagram showing an electrode disposal device according to exemplary embodiments.

[0020] Figures 2a to 2e are schematic diagrams showing electrode disposal methods according to exemplary embodiments.

[0021] Figure 3 is a schematic diagram showing an electrode disposal device according to exemplary embodiments.

[0022] FIG. 4 is a perspective view showing a holding block of a holder according to exemplary embodiments.

[0023] Figure 5 is a side view showing a bobbin.

[0024] FIG. 6 is a perspective view showing a holding block of a holder according to exemplary embodiments.

[0025] Figure 7 is a perspective view showing a holding block of a holder according to exemplary embodiments.

[0026] Figure 8 is a perspective view showing a holder according to exemplary embodiments.

[0027] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, it should be noted that the terms and words used in this specification and claims should not be construed as limited to their conventional or dictionary meanings. Based on the principle that the inventor can appropriately define the concepts of terms to best explain his or her invention, they should be interpreted in a way that aligns with the technical spirit of the present invention.

[0028] Accordingly, the embodiments described in this specification and the configurations illustrated in the drawings are merely the most preferred embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that there may be various equivalents and modified examples that can replace them at the time of filing this application.

[0029] In addition, when describing the present invention, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present invention, the detailed description is omitted.

[0030] Since the embodiments of the present invention are provided to more fully explain the present invention to those skilled in the art, the shapes and sizes of components in the drawings may be exaggerated, omitted, or schematically illustrated for clearer explanation. Accordingly, the sizes and proportions of each component do not fully reflect the actual sizes or proportions.

[0031]

[0032] (Example 1)

[0033] FIG. 1 is a schematic diagram showing an electrode disposal device (100) according to exemplary embodiments.

[0034] Referring to FIG. 1, an electrode disposal device (100) can perform a disposal operation on an electrode sheet (300) wound around a bobbin (500). The electrode sheet (300) may correspond to a semi-finished product for manufacturing an electrode for a secondary battery. The electrode sheet (300) may include a current collector and an electrode slurry layer applied on the current collector. The electrode sheet (300) may be brought into the electrode disposal device (100) in a state of being wound around a cylindrical bobbin (500). The disposal operation on the electrode sheet (300) may include cutting and separating the electrode sheet (300) remaining on the bobbin (500) after the electrode manufacturing process into a plurality of segments (310), and collecting and disposing of the plurality of segments (310) of the electrode sheet (300) in a disposal box (150).

[0035] The electrode disposal device (100) may include a frame (110), a holder (120), a cutter (140), a disposal box (150), a scale (160), a touch roll (170), and a control unit (180).

[0036] The frame (110) can support components of the electrode disposal device (100), such as the holder (120), cutter (140), and touch roll (170).

[0037] The holder (120) can support the bobbin (500) and can be configured to rotate the bobbin (500) so that the electrode sheet (300) is released from the bobbin (500). The direction of the rotation axis of the bobbin (500) can be parallel to the horizontal direction, and the electrode sheet (300) released from the bobbin (500) can fall in the vertical direction.

[0038] The holder (120) may include a pair of holding blocks (121) that support opposite sides of the bobbin (500). One of the pair of holding blocks (121) may support one side of the bobbin (500), and the other of the pair of holding blocks (121) may support the other side of the bobbin (500).

[0039] The holder (120) may include an actuator configured to move at least one of the pair of holding blocks (121) in a horizontal direction. At least one of the pair of holding blocks (121) may be mounted on the frame (110) to be horizontally movable. The holder (120) may move at least one of the holding blocks (121) in a horizontal direction between an operating position and a standby position. In the operating position, the pair of holding blocks (121) may each engage with a bobbin (500) to support the bobbin (500). In the standby position, at least one of the pair of holding blocks (121) may be spaced apart from the bobbin (500). The distance between the pair of holding blocks (121) in the standby position may be greater than the distance between the pair of holding blocks (121) in the operating position. When a pair of holding blocks (121) are in the above-described standby position, the bobbin (500) can be loaded into the electrode disposal device (100) or the bobbin (500) can be unloaded from the electrode disposal device (100).

[0040] Each holding block (121) may include a rotation block (122) configured to rotate about a rotation axis and a rotation actuator configured to rotate the rotation block (122). The rotation axis direction of the rotation block (122) may be parallel to the rotation axis direction of the bobbin (500). For example, the rotation axis direction of the rotation block (122) may be parallel to the horizontal direction. While the bobbin (500) is supported by the holding blocks (121), by rotating at least one of the rotation blocks (122) of the holding blocks (121), the bobbin (500) can be rotated so that the electrode sheet (300) is released from the bobbin (500).

[0041] A cutter (140) may be positioned below the holder (120). The cutter (140) may be configured to cut a portion of the electrode sheet (300) released from the bobbin (500). The cutter (140) may cut the electrode sheet (300) to separate the electrode sheet (300) into a plurality of segments (310).

[0042] The cutter (140) may include a cutter frame (141), a cutting knife (143), and a support (145). The cutter frame (141) may be coupled to the frame (110). The cutting knife (143) may cut the electrode sheet (300). The cutting knife (143) may be movably mounted on the cutter frame (141), and the movement of the cutting knife (143) may be controlled by an actuator provided on the cutter (140). The support (145) may support a portion of the electrode sheet (300) released from the bobbin (500). For example, the support (145) may be mounted on the cutter frame (141) and configured to suction-support a portion of the electrode sheet (300) to the cutter frame (141). The support (145) may include a suction pump that provides a suction force for suctioning a portion of the electrode sheet (300). While the support member (145) supports a portion of the electrode sheet (300), the cutting knife (143) can move horizontally to cut the electrode sheet (300).

[0043] In exemplary embodiments, the cutting knife (143) may be configured to move between a standby position in which the entirety of the cutting knife (143) is positioned within the cutter frame (141) and an operating position in which at least a portion of the cutting knife (143) protrudes outwardly from the cutter frame (141). The cutting knife (143) may protrude from the cutter frame (141) while a cutting operation on the electrode sheet (300) is being performed. When a cutting operation on the electrode sheet (300) is not being performed, the cutting knife (143) may be positioned in a standby position embedded within the cutter frame (141).

[0044] A waste box (150) can be placed under the cutter (140). The waste box (150) can accommodate a plurality of segments (310) separated from the electrode sheet (300). When the cutter (140) cuts the electrode sheet (300), the segments (310) of the electrode sheet (300) can fall freely and be collected in the waste box (150).

[0045] The scale (160) can support the waste box (150) and can be configured to detect the weight of the waste box (150). The scale (160) can be coupled to the waste box (150) and can move together when the waste box (150) moves. The weight of the waste box (150) detected by the scale (160) can refer to the weight of the segments (310) of the electrode sheets (300) collected in the waste box (150) or the sum of the weight of the waste box (150) and the weight of the segments (310) of the electrode sheets (300) collected in the waste box (150).

[0046] The touch roll (170) can contact the electrode sheet (300) wound on the bobbin (500) and can be configured to rotate or roll while in contact with the electrode sheet (300). The touch roll (170) uniformly presses the electrode sheet (300) in the width direction of the electrode sheet (300), thereby allowing the electrode sheet (300) to be smoothly unwound from the bobbin (500).

[0047] The control unit (180) may be connected to components of the electrode disposal device (100) so as to transmit signals thereto. The control unit (180) may control the operation of the components of the electrode disposal device (100) to control the electrode disposal process using the electrode disposal device (100). The control unit (180) may include a power supply, a CPU, an input interface, an output interface, a communication interface, and memory devices. For the operation of the control unit (180), the control unit (180) may be configured to supply power to other elements of the control unit (180), such as the CPU, the input interface, the output interface, the communication interface, and the memory devices. The memory devices may include a ROM (Read Only Memory) configured to store a system program such as an operating system, and a RAM (Random Access Memory) configured to store data such as user programs and status information of input and output devices, timers, counters, and values ​​of other internal devices. The CPU may be configured to control communication between modules that implement logic and convert input signals into output operation signals. The CPU can operate based on system programs and user programs stored in memory devices. The CPU can be configured to write or read inspection data and measurement data to the data area of ​​the memory devices based on the system programs and user programs. Conditions or data of industrial devices and production processes can be transmitted to the CPU through an input module. Results processed by the CPU can be transmitted to an actuator through an output module. However, the present invention is not limited thereto, and the control unit (180) can include any one of a simple controller, a microprocessor, a CPU, a complex processor such as a GPU, a processor configured by software, dedicated hardware, and firmware.The control unit (180) may be implemented by, for example, a general-purpose computer or application-specific hardware such as a DSP, FPGA, or ASIC.

[0048]

[0049] (Example 2)

[0050] FIGS. 2A to 2E are schematic diagrams illustrating electrode disposal methods according to exemplary embodiments. Hereinafter, with reference to FIGS. 2A to 2E, an exemplary electrode disposal method using the electrode disposal device (100) of FIG. 1 will be described.

[0051] Referring to FIG. 2a, a pair of holding blocks (121) are positioned in a standby position, and a bobbin (500) is coupled to one of the pair of holding blocks (121) while the pair of holding blocks (121) are positioned in the standby position.

[0052] Referring to Fig. 2b, a pair of holding blocks (121) are moved from a standby position to a working position. For example, the holding blocks (121) are moved horizontally so that the holding blocks (121) that are not coupled to the bobbin (500) among the pair of holding blocks (121) are in close contact with the bobbin (500). When the pair of holding blocks (121) are positioned at the working position, both sides of the bobbin (500) can be supported by the pair of holding blocks (121).

[0053] Referring to Fig. 2c, while supporting a bobbin (500) with a pair of holding blocks (121), at least one of the rotation blocks (122) of the pair of holding blocks (121) is rotated to rotate the bobbin (500). When the bobbin (500) is rotated, a portion of the electrode sheet (300) released from the bobbin (500) falls toward the disposal box (150).

[0054] Referring to FIG. 2d, a portion of the electrode sheet (300) released from the bobbin (500) is cut with a cutter (140). While the support member (145) of the cutter (140) is adsorbing and supporting the portion of the electrode sheet (300), the cutting knife (143) moves horizontally to cut the electrode sheet (300).

[0055] Referring to FIGS. 2d and 2e, the step of dropping the electrode sheet (300) by a certain length and the step of cutting the electrode sheet (300) are repeated several times to separate the electrode sheet (300) into a plurality of segments (310). The plurality of segments (310) of the electrode sheet (300) fall freely and are collected in a waste box (150).

[0056] Next, when all the electrode sheets (300) are collected in the waste box (150), a pair of holding blocks (121) are moved from the working position to the standby position, and the bobbin (500) is unloaded from the holder (120).

[0057]

[0058] (Example 3)

[0059] Fig. 3 is a schematic diagram illustrating an electrode disposal device (100A) according to exemplary embodiments. Hereinafter, the electrode disposal device (100A) of Fig. 3 will be described, focusing on differences from the electrode disposal device (100) of Fig. 1.

[0060] Referring to FIG. 3, the electrode disposal device (100A) may include a transport device (190) configured to transport a waste box (150) and a scale (160) along a predetermined transport path. The waste box (150) and the scale (160), which are coupled to each other, are transported together by the transport device (190). In exemplary embodiments, the transport device (190) may be a conveyor transport device including a conveyor belt (191) and a plurality of rollers (193). The plurality of rollers (193) may include a drive roller configured to move the conveyor belt (191) and a guide roller that guides the movement of the conveyor belt (191). The waste box (150) and the scale (160) are placed on the conveyor belt (191) and can be moved by the movement of the conveyor belt (191).

[0061] The transport device (190) can be configured to move the waste box (150) between a standby position, a working position, and a disposal position. The standby position is a position where an empty waste box (150) waits. The working position is a position below the holder (120) and the cutter (140), and is a position for collecting a plurality of segments (310) of electrode sheets (300) cut by the cutter (140) into the waste box (150). The waste box (150), filled with a plurality of segments (310) of electrode sheets (300) to an appropriate weight, is transported to the disposal position. The standby position, the working position, and the disposal position are sequentially arranged along the transport path of the transport device (190).

[0062] In exemplary embodiments, the scale (160) can detect the weight of the waste box (150) and transmit a weight signal regarding the weight of the waste box (150) to the control unit (180). The control unit (180) can control the operation of the electrode waste device (100A) based on the weight signal transmitted from the scale (160).

[0063] In exemplary embodiments, the control unit (180) may determine whether the weight of the disposal box (150) exceeds a reference weight based on a weight signal transmitted from the scale (160). If the weight of the disposal box (150) is determined to exceed the reference weight, the control unit (180) may stop the operation of the holder (120) and the cutter (140) and operate the transport device (190) to move the disposal box (150) from the working position to the disposal position.

[0064]

[0065] (Example 4)

[0066] Fig. 4 is a perspective view showing a holding block (121A) of a holder (120A) according to exemplary embodiments. Fig. 5 is a side view showing a bobbin (500).

[0067] Referring to FIGS. 4 and 5 together with FIG. 1, the bobbin (500) may include a first insertion groove (511) and a second insertion groove (513) on the side. The first insertion groove (511) and the second insertion groove (513) may each extend radially from a central axis of the bobbin (500). That is, the first insertion groove (511) and the second insertion groove (513) may each extend radially from the center of the side surface of the bobbin (500). The first insertion groove (511) may extend in a first direction perpendicular to the rotation axis direction of the rotation block (122), and the second insertion groove (513) may extend in a second direction perpendicular to the rotation axis direction of the rotation block (122). For example, the first direction and the second direction may be perpendicular to each other.

[0068] The holding block (121A) may include a first connecting blade (123) connected to an end (1221) of the rotating block (122). The first connecting blade (123) may extend in a first direction perpendicular to the rotation axis direction of the rotating block (122). The first connecting blade (123) may be inserted into a first insertion groove (511) of the bobbin (500). The holding block (121A) may include a pair of first connecting blades (123) connected to the end (1221) of the rotating block (122), and the pair of first connecting blades (123) may be inserted into each of the first insertion grooves (511) of the bobbin (500).

[0069] As the first connecting blade (123) of the holding block (121A) is inserted into the first insertion groove (511) of the bobbin (500), the bobbin (500) can be supported by being engaged with the holding block (121A). While the first connecting blade (123) of the holding block (121A) is inserted into the first insertion groove (511) of the bobbin (500) and the bobbin (500) is supported by the holding block (121A), when the rotating block (122) is rotated, the bobbin (500) is rotated, so that the electrode sheet (300) can be released from the bobbin (500).

[0070] The holder (120A) supports the bobbin (500) by inserting the connecting blade of the holding block (121A) into the insertion groove of the bobbin (500), so the holder (120A) can be universally applied to bobbins (500) having various dimensions.

[0071]

[0072] (Example 5)

[0073] Fig. 6 is a perspective view illustrating a holding block (121B) of a holder (120B) according to exemplary embodiments. Hereinafter, the holding block (121B) of the holder (120B) of Fig. 6 will be described, focusing on differences from the holding block (121A) of the holder (120A) described with reference to Fig. 4.

[0074] Referring to FIGS. 5 and 6, the holding block (121B) may include a second connecting blade (124) connected to an end (1221) of the rotating block (122). The second connecting blade (124) may extend in a second direction perpendicular to the rotation axis direction of the rotating block (122). The second connecting blade (124) may be inserted into a second insertion groove (513) of the bobbin (500). The holding block (121B) may include a pair of second connecting blades (124) connected to the end (1221) of the rotating block (122), and the pair of second connecting blades (124) may be inserted into each of the second insertion grooves (513) of the bobbin (500).

[0075] As the second connecting blade (124) of the holding block (121B) is inserted into the second insertion groove (513) of the bobbin (500), the bobbin (500) can be supported by being engaged with the holding block (121B). While the first connecting blade (123) and the second connecting blade (124) of the holding block (121B) are inserted into the first insertion groove (511) and the second insertion groove (513) of the bobbin (500), respectively, and the bobbin (500) is supported by the holding block (121B), when the rotating block (122) is rotated, the bobbin (500) is rotated, and the electrode sheet (300) can be released from the bobbin (500).

[0076]

[0077] (Example 6)

[0078] Fig. 7 is a perspective view illustrating a holding block (121C) of a holder (120C) according to exemplary embodiments. Hereinafter, the holding block (121C) of the holder (120C) of Fig. 7 will be described, focusing on differences from the holding block (121B) of the holder (120B) described with reference to Fig. 6.

[0079] Referring to FIGS. 5 and 7, the holding block (121C) may include a first contact pad (131) mounted on a first connecting blade (123) and a second contact pad (133) mounted on a second connecting blade (124).

[0080] The first contact pad (131) can be accommodated in the hole (1231 of FIG. 8) of the first connecting blade (123). When the first connecting blade (123) is inserted into the first insertion groove (511) of the bobbin (500), the first contact pad (131) can be brought into close contact with the surface of the bobbin (500) defining the first insertion groove (511) of the bobbin (500) of the first connecting blade (123). As the first contact pad (131) is brought into close contact with the bobbin (500), slipping between the first connecting blade (123) and the bobbin (500) can be prevented.

[0081] The second contact pad (133) can be accommodated in the hole of the second connecting blade (124). When the second connecting blade (124) is inserted into the second insertion groove (513) of the bobbin (500), the second contact pad (133) can be brought into close contact with the surface of the bobbin (500) defining the second insertion groove (513) of the bobbin (500) of the second connecting blade (124). As the second contact pad (133) is brought into close contact with the bobbin (500), slipping between the second connecting blade (124) and the bobbin (500) can be prevented.

[0082] For example, the first contact pad (131) and the second contact pad (133) may include rubber, silicone, and / or polytetrafluoroethylene (PTFE).

[0083]

[0084] (Example 7)

[0085] Fig. 8 is a perspective view illustrating a holder (120D) according to exemplary embodiments. Hereinafter, the holder (120D) of Fig. 8 will be described, focusing on differences from the holder (120C) described with reference to Fig. 7.

[0086] Referring to FIG. 8, the holder (120D) may include an actuator (135) that moves the first contact pad (131). The actuator (135) moves the first contact pad (131) to adjust the protrusion height (H1) at which the first contact pad (131) protrudes from the first connecting blade (123). The protrusion height (H1) of the first contact pad (131) may vary depending on the size of the first insertion groove (511) of the bobbin (500), and the frictional force between the first contact pad (131) and the bobbin (500) may be adjusted by adjusting the protrusion height (H1) of the first contact pad (131).

[0087] Additionally, although not shown in the drawing, the holder (120D) may include an actuator that moves the second contact pad (133). The actuator may move the second contact pad (133) to adjust the protrusion height at which the second contact pad (133) protrudes from the second connecting blade (124). The protrusion height of the second contact pad (133) may vary depending on the size of the second insertion groove (513) of the bobbin (500), and the frictional force between the second contact pad (133) and the bobbin (500) may be adjusted by adjusting the protrusion height of the second contact pad (133).

[0088]

[0089] According to the electrode manufacturing device according to exemplary embodiments, the electrode disposal process can be automated, thereby improving the productivity of the electrode disposal process and preventing safety issues and accidents of workers.

[0090] The present invention has been described in more detail through drawings and examples. However, the configurations described in the drawings or examples described in this specification are merely embodiments of the present invention and do not represent all of the technical ideas of the present invention. Therefore, it should be understood that various equivalents and modified examples may exist as of the time of this application.

Claims

1. A holder comprising a holding block configured to support a side of a bobbin on which an electrode sheet is wound, and configured to rotate the bobbin so that the electrode sheet is unwound from the bobbin; a cutter configured to cut a portion of the electrode sheet released from the bobbin; and A waste box for accommodating segments of the electrode sheet cut by the cutter; Including, The above holding block is, rotating block; and A first connecting blade extending in a first direction perpendicular to the rotation axis of the above rotating block and inserted into a first insertion groove of the above bobbin; An electrode disposal device comprising:

2. In paragraph 1, The above holding block is, A second connecting blade extending in a second direction that is perpendicular to the rotation axis of the rotating block and different from the first direction, and inserted into a second insertion groove of the bobbin; An electrode disposal device characterized by further including:

3. In paragraph 1, The above holding block is, A contact pad accommodated in the hole of the first connecting blade and in contact with the bobbin; An electrode disposal device characterized by further including:

4. In paragraph 3, An electrode disposal device characterized in that the holder is configured to move the contact pad to adjust the height at which the contact pad protrudes from the first connecting blade.

5. In paragraph 3, An electrode disposal device characterized in that the above contact pad comprises rubber.

6. In paragraph 1, The holder is configured to move the holding block between a working position and a standby position, In the above working position, the holding block supports the bobbin, An electrode disposal device characterized in that, in the above-mentioned waiting position, the holding block is spaced apart from the bobbin.

7. In paragraph 1, A scale coupled to the above waste box and configured to detect the weight of the above waste box; An electrode disposal device characterized by further including:

8. In paragraph 7, An electrode disposal device further comprising a transport device configured to move the disposal box and the scale.

9. In paragraph 1, A scale coupled to the above disposal box and configured to detect the weight of the above disposal box; and A transport device configured to move the above disposal box and the above scale; Including more, An electrode disposal device characterized in that the transport device is configured to move the disposal box and the scale to a disposal position when the weight of the disposal box detected by the scale exceeds a reference weight.

10. In paragraph 1, An electrode disposal device further comprising a touch roll in contact with the electrode sheet wound around the bobbin.

11. In paragraph 1, An electrode disposal device characterized in that the cutter includes a support member that supports a portion of the electrode sheet released from the bobbin and a cutting knife configured to cut the electrode sheet while the support member supports the electrode sheet.

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