Ultra-high-speed dual cutting system for secondary battery and ultra-high-speed dual cutting method for secondary battery

Abstract

The purpose of the present invention is to provide a system for cutting an electrode (10) (negative / positive), which is conveyed via a reel, at a predetermined pitch during notching process in a secondary battery manufacturing process. The configuration of the present invention includes: an electrode supply unit (120) configured to supply the electrode (10) of a secondary battery; an electrode feeder (130) configured to feed the electrode (10) supplied from the electrode supply unit (120) for cutting; a primary cutting part (140) configured to primarily cut the electrode (10) supplied by the electrode feeder (130); and a secondary cutting part (150) configured to secondarily cut the electrode (10) supplied from the primary cutting part (140). The effect of the present invention is that equipment which cuts the electrode (10) supplied in a reel form at an ultra-high speed with a predetermined pitch according to the specification of a product to be produced, performs a visual inspection, and then loads good and defective products into magazines can be used to achieve at least twice the production volume of conventionally used equipment.

Description

Secondary battery ultra-high-speed dual cutting system and secondary battery ultra-high-speed dual cutting method

[0001] The present invention relates to a secondary battery ultra-high-speed dual cutting system and a secondary battery ultra-high-speed dual cutting method, and more specifically, to a secondary battery ultra-high-speed dual cutting system and a secondary battery ultra-high-speed dual cutting method for securing a new concept of cutting technology in a secondary battery notching process and changing a cutting unit compared to conventional equipment to maximize secondary battery production.

[0002]

[0003] Secondary batteries are typically made by stacking multiple layers of positive and negative electrode plates (electrodes) by interposing a separator between a plurality of positive and negative electrode plates.

[0004] At this time, the electrode is configured in a roughly square plate shape and has a structure with electrode tabs on one side. The reel electrode wound on a supply part such as a supply bobbin (or roller) is unwound and fed lengthwise, thereby forming electrode tabs at regular intervals on one side of the reel electrode, and the reel electrode with the electrode tabs formed is cut at an appropriate position to create a square plate-shaped electrode. Therefore, a device for cutting the long reel electrode with the electrode tabs formed into a square plate-shaped electrode is essential.

[0005] A conventional electrode cutting device is configured to cut a secondary battery electrode by means of blades (cutting blades) provided on the upper and lower cutters while the two upper and lower cutters slide relative to each other with their inner surfaces in contact.

[0006]

[0007] The purpose of the present invention is to provide a secondary battery ultra-high-speed dual cutting system and a secondary battery ultra-high-speed dual cutting method for securing cutting quality optimization such as burrs and detachments occurring during ultra-high-speed cutting and for securing a high-speed inspection vision system.

[0008]

[0009] According to the present invention for solving the above-mentioned problem, it is characterized by including an electrode supply unit (120) for supplying an electrode (10) of a secondary battery, an electrode feeder (130) for feeding the electrode (10) supplied from the electrode supply unit (120) for cutting, a first cutting unit (140) for first cutting the electrode (10) supplied by the electrode feeder (130), and a second cutting unit (150) for second cutting the electrode (10) supplied from the first cutting unit (140).

[0010] The electrode supply unit (120) is characterized by including a pre-feeding frame (122) arranged on the electrode (10) input side for inserting the electrode (10) of the secondary battery, a pre-feeding bobbin (124) rotatably mounted on the pre-feeding frame (122) and having the electrode (10) of the secondary battery wound around its outer circumference, a pre-feeding roller (126) arranged in front of the pre-feeding bobbin (124), and a notching mold (128) (2-cavity mold) arranged between the pre-feeding roller (126) and the electrode feeder (130).

[0011] The above pre-feeding roller (126) is composed of an upper pre-feeding roller (126A) and a lower pre-feeding roller (126B) that rotate in opposite directions and allow the electrode (10) to pass through the outer surface thereof, and the electrode feeder (130) is characterized by including a master feeder (132) arranged in a front position of the notching mold (128), a secondary feeder (134) arranged in a front position of the master feeder (132), and a sub-feeder (136) arranged in a front position of the secondary feeder (134).

[0012] The above master feeder (132) is characterized in that it includes a pair of upper master feeding rollers (132A) and lower master feeding rollers (132B) that rotate in opposite directions so that both sides of the electrode (10) fed through the outer surface of the upper pre-feeding roller (126A) and lower pre-feeding roller (126B) forming the above pre-feeding roller (126) pass in contact with the outer surface.

[0013] The secondary feeder (134) is characterized by including a pair of upper secondary feeding rollers (134A) and lower secondary feeding rollers (134B) that rotate in opposite directions so that both sides of the electrode (10) pass through the outer surface of the upper master feeding roller (132A) and lower master feeding roller (132B) forming the master feeder (132) and come into contact with each other.

[0014] The above sub-feeder (136) is characterized in that it includes a pair of upper sub-feeding rollers (136A) and lower sub-feeding rollers (136B) that rotate in opposite directions so that both sides of the electrode (10) fed through the outer surface of the upper secondary feeding roller (134A) and lower secondary feeding roller (134B) forming the secondary feeder (134) pass in contact with the outer surface.

[0015] A first cutting section (140) is arranged between the master feeder (132) and the second feeder (134), and the first cutting section (140) is characterized by including a first cutting support frame (142), a first cutting lifting device (144) mounted on the first cutting support frame (142), and a first cutter (146) that is lifted by the first cutting lifting device (144).

[0016] The present invention provides a secondary battery ultra-high-speed dual cutting system as a solution to the problem, characterized in that a secondary cutting unit (150) is arranged between the secondary feeder (134) and the sub-feeder (136), and the secondary cutting unit (150) includes a secondary cutting support frame (152) arranged in a front position of the primary cutting support frame (142) based on the transport direction of the electrode (10), a secondary cutting lifting device (154) mounted on the secondary cutting support frame (152), and a secondary cutter (156) that is lifted by the secondary cutting lifting device (154).

[0017] A secondary battery ultra-high-speed dual cutting method using a secondary battery ultra-high-speed dual cutting system, characterized by including an electrode supply unit (120) for supplying an electrode (10) of a secondary battery, an electrode feeder (130) for feeding the electrode (10) supplied from the electrode supply unit (120) for cutting, a first cutting unit (140) for first cutting the electrode (10) supplied by the electrode feeder (130), and a second cutting unit (150) for second cutting the electrode (10) supplied from the first cutting unit (140), comprising: an electrode (10) feeding step for feeding the electrode (10) of the secondary battery from the electrode supply unit (120), and an electrode (10) first cutting feeding step for feeding the electrode (10) to the first cutting unit (140) by the electrode feeder (130) The present invention provides a secondary battery ultra-high-speed dual cutting method as a solution to the problem, characterized by including a first cutting step of first cutting an electrode (10) by the first cutting unit (140), a first cutting post-feeding step of feeding the first-cut electrode (10) to a second feeder (134) and a sub-feeder (136), a second cutting step of secondly cutting the electrode (10) by the second cutting unit (150), and a second cutting feeding step of feeding the second-cut electrode (10) to the second feeder (134).

[0018]

[0019] The present invention is a device that cuts electrodes supplied in reel form at high speeds at a constant pitch according to the specifications of the manufactured product, conducts an external inspection, and then loads good and defective products into a magazine, thereby enabling production to be more than double the production volume used in the past. In other words, the present invention has the effect of improving production capacity compared to existing cutting equipment through the development of a secondary battery cutting method and structure.

[0020]

[0021] Figure 1 is a plan view schematically showing a process of cutting an electrode using a secondary battery ultra-high-speed dual cutting system according to the present invention.

[0022] Figure 2 is a plan view schematically showing a process of cutting an electrode in a continuous process using a secondary battery ultra-high-speed dual cutting system according to the present invention.

[0023] Figure 3 is a front view showing the structure of a secondary battery ultra-high-speed dual cutting system according to the present invention.

[0024] Figure 4 is a front view showing an enlarged view of the structure of the electrode supply unit, which is a main part shown in Figure 3.

[0025] Figure 5 is a front view schematically showing the structure and operating mechanism of the electrode supply unit, which is a main part of the secondary battery ultra-high-speed dual cutting system according to the present invention, including the notching mold, the master feeder, the secondary feeder, the sub feeder, the first cutting section, and the second cutting section.

[0026] Figure 6 is a front view schematically showing the structure of the electrode supply unit, which is a main part of the secondary battery ultra-high-speed dual cutting system according to the present invention, including the notching mold, the master feeder, the secondary feeder, the sub feeder, the first cutting section, and the second cutting section.

[0027] Figure 7 is an enlarged view of the main part of Figure 6.

[0028]

[0029] An electrode supply unit (120) that supplies the electrode (10) of the secondary battery,

[0030] An electrode feeder (130) that feeds the electrode (10) supplied from the electrode supply unit (120) for cutting,

[0031] A primary cutting section (140) that primarily cuts the electrode (10) supplied by the electrode feeder (130),

[0032] It is characterized by including a secondary battery ultra-high-speed dual cutting system including a secondary cutting unit (150) that cuts the electrode (10) supplied from the first cutting unit (140) for the second time.

[0033]

[0034] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. The objectives, features, and advantages of the present invention will be more readily understood by referring to the attached drawings and the detailed description below. Furthermore, in describing the present invention, detailed descriptions of known components or functions will be omitted if they are deemed to obscure the gist of the present invention.

[0035] Additionally, terms such as first, second, A, B, (a), (b), etc. may be used to describe components of the present invention. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not limited by the terms. When it is described that a component is "connected," "coupled," or "connected" to another component, it should be understood that the component may be directly connected or connected to the other component, but another component may also be "connected," "coupled," or "connected" between each component.

[0036] In addition, specific structural and functional descriptions in the present invention are merely exemplified for the purpose of explaining embodiments according to the concept of the present invention, and embodiments according to the concept of the present invention may be implemented in various forms and should not be construed as being limited to the embodiments described in this specification or application.

[0037]

[0038] FIG. 1 is a plan view schematically showing a process of cutting an electrode using a secondary battery ultra-high-speed dual cutting system according to the present invention, FIG. 2 is a plan view schematically showing a process of cutting an electrode in a continuous process using a secondary battery ultra-high-speed dual cutting system according to the present invention, FIG. 3 is a front view schematically showing the structure of a secondary battery ultra-high-speed dual cutting system according to the present invention, FIG. 4 is a front view schematically showing the structure of an electrode supply unit, which is a major part shown in FIG. 3, in an enlarged manner, FIG. 5 is a front view schematically showing the structure and operating mechanism of a notching mold, a master feeder, a secondary feeder, a sub-feeder, a first cutting section, and a second cutting section of an electrode supply unit, which are major parts of a secondary battery ultra-high-speed dual cutting system according to the present invention, and FIG. 6 is a plan view schematically showing the structures of a notching mold, a master feeder, a second feeder, a sub-feeder, a first cutting section, and a second cutting section of an electrode supply unit, which are major parts of a secondary battery ultra-high-speed dual cutting system according to the present invention. Front view, Fig. 7 is a drawing showing an enlarged view of the main part of Fig. 6.

[0039] Referring to the drawings, the secondary battery ultra-high-speed dual cutting system of the present invention includes as a basic configuration an electrode supply unit (120) for supplying an electrode (10) of a secondary battery, an electrode feeder (130) for feeding the electrode (10) supplied from the electrode supply unit (120) for cutting, a first cutting unit (140) for first cutting the electrode (10) supplied by the electrode feeder (130), and a second cutting unit (150) for second cutting the electrode (10) supplied from the first cutting unit (140), and the electrode (10) of the secondary battery is fed from the electrode supply unit (120), the electrode (10) is fed to the first cutting unit (140) by the electrode feeder (130), and the electrode (10) is first cut by the first cutting unit (140). After cutting, the electrode (10) is cut a second time by the second cutting section (150).

[0040] Meanwhile, in the present invention, the electrode supply unit (120) is configured to include a pre-feeding frame (122) arranged on the electrode (10) input side for inserting the electrode (10) of the secondary battery, a pre-feeding bobbin (124) rotatably mounted on the pre-feeding frame (122) and having the electrode (10) of the secondary battery wound around its outer circumference, a pre-feeding roller (126) arranged in front of the pre-feeding bobbin (124), and a notching mold (128) (2-cavity mold) arranged between the pre-feeding roller (126) and the electrode feeder (130).

[0041] To explain again, an electrode (10) transfer conveyor is arranged between the electrode supply unit (120) and the sub-feeder (136) arranged in the front position of the secondary cutting unit (150) (the front position of the secondary cutting unit (150) based on the electrode (10) transfer line along which the electrode (10) of the secondary battery is transferred), so that the electrode (10) can be transferred from the electrode (10) input terminal to the electrode (10) discharge terminal by the electrode (10) transfer conveyor.

[0042] At this time, a discharge guide conveyor, which will be described later, may be arranged in front of the discharge end of the electrode (10), so that the electrode (10) cut for the second time by the second cutting section (150) can be transported by the discharge guide conveyor.

[0043] The above electrode supply unit (120) includes a pre-feeding frame (122), a pre-feeding bobbin (124), and a pre-feeding roller (126).

[0044] The notching mold (128) (2-cavity mold) is a mold in which two cavities are formed to notch two electrodes simultaneously. Two cavities are formed inside the mold, and for faster speed, the number of secondary feeders (134) among the electrode feeders (130) can be increased to notch multiple electrodes (10).

[0045] The above pre-feeding frame (122) is placed on the electrode (10) input side for inserting the electrode (10) of the secondary battery.

[0046] The above-mentioned pre-feeding bobbin (124) is rotatably mounted on the above-mentioned pre-feeding frame (122). A secondary electrode (10) is wound on the outer circumference of the pre-feeding bobbin (124).

[0047] At this time, the bobbin shaft at the center of the pre-feeding bobbin (124) is mounted on the pre-feeding frame (122) via a relative rotation support means such as a bearing, so that the pre-feeding bobbin (124) is rotatably mounted on the pre-feeding frame (122), and a rotation drive motor is mounted on the pre-feeding frame (122), and the bobbin shaft at the center of the pre-feeding bobbin (124) is connected to the motor shaft of the rotation drive motor via a rotational force transmission means such as a gear or a coupler, so that the pre-feeding bobbin (124) rotates in one direction (i.e., rotates in a direction such that the electrode (10) wound on the outer surface is fed along the electrode (10) transport line) by the rotation of the motor shaft of the rotation drive motor, so that the electrode (10) can be fed along the electrode (10) transport line.

[0048] The above pre-feeding roller (126) is positioned in front of the pre-feeding bobbin (124). The pre-feeding roller (126) is positioned in front of the pre-feeding bobbin (124) based on the transport line along which the electrode (10) of the secondary battery is transported.

[0049] At this time, the pre-feeding roller (126) is composed of an upper pre-feeding roller (126A) and a lower pre-feeding roller (126B) that rotate in opposite directions and allow the electrode (10) to pass through the outer surface, and the electrode feeder (130) is composed of a master feeder (132) arranged in a front position of the notching mold (128), a secondary feeder (134) arranged in a front position of the master feeder (132), and a sub-feeder (136) arranged in a front position of the secondary feeder (134).

[0050] The above notching mold (128) is placed between the pre-feeding roller (126) and the electrode feeder (130). The notching mold (128) is a 2-cavity cavity mold, and forms a tab through a notching operation on the electrode (10) being transported along the electrode (10) transport line.

[0051] The above electrode feeder (130) includes a master feeder (132), a secondary feeder (134), and a sub feeder (136).

[0052] The above master feeder (132) is positioned at the front position of the notching mold (128). The master feeder (132) is positioned at the front position of the notching mold (128) based on the transport line along which the electrode (10) of the secondary battery is transported.

[0053] The secondary feeder (134) is positioned in front of the master feeder (132). The secondary feeder (134) is positioned in front of the master feeder (132) based on the transport line along which the electrode (10) of the secondary battery is transported.

[0054] The above sub-feeder (136) is positioned in front of the secondary feeder (134). The sub-feeder (136) is positioned in front of the secondary feeder (134) based on the transport line along which the electrode (10) of the secondary battery is transported.

[0055] At this time, the master feeder (132) forms the pre-feeding roller (126), and includes a pair of upper master feeding rollers (132A) and lower master feeding rollers (132B) that rotate in opposite directions so that both sides of the electrode (10) fed through the outer surface of the upper pre-feeding roller (126A) and lower pre-feeding roller (126B) pass in contact with the outer surface.

[0056] In addition, the secondary feeder (134) forms the master feeder (132) and includes a pair of upper secondary feeding rollers (134A) and lower secondary feeding rollers (134B) that rotate in opposite directions so that both sides of the electrode (10) passing through the outer peripheral surfaces of the upper master feeding roller (132A) and lower master feeding roller (132B) come into contact with each other.

[0057] In addition, the sub-feeder (136) forms the secondary feeder (134), and includes a pair of upper sub-feeding rollers (136A) and lower sub-feeding rollers (136B) that rotate in opposite directions so that both sides of the electrode (10) fed through the outer surface of the upper secondary feeding roller (134A) and lower secondary feeding roller (134B) contact the outer surface and pass.

[0058] Meanwhile, in the present invention, a first cutting part (140) is arranged between the master feeder (132) and the second feeder (134), and the first cutting part (140) includes a first cutting support frame (142), a first cutting lifting device (144) mounted on the first cutting support frame (142), and a first cutter (146) that is lifted by the first cutting lifting device (144).

[0059] The above first cutting part (140) is positioned at the front of the master feeder (132) based on the transport direction of the electrode (10).

[0060] At this time, the first cutting lifting device (144) is configured as a first cutting cylinder with a cylinder rod arranged in a vertical direction, and the first cutter (146) is mounted on the cylinder rod of the first cutting cylinder, so that the first cutter (146) is lowered by the lowering of the cylinder rod of the first cutting cylinder to first cut the electrode (10) fed downward.

[0061] In addition, a second cutting part (150) is arranged between the second feeder (134) and the sub-feeder (136), and the second cutting part (150) includes a second cutting support frame (152) arranged at a front position of the first cutting support frame (142) based on the transport direction of the electrode (10), a second cutting lifting device (154) mounted on the second cutting support frame (152), and a second cutter (156) that is elevated by the second cutting lifting device (154).

[0062] At this time, the secondary cutting lifting device (154) is configured as a secondary cutting cylinder in which the cylinder rod is arranged in a vertical direction, and the secondary cutter (156) is mounted on the cylinder rod of the secondary cutting cylinder, so that the secondary cutter (156) is lowered by the lowering of the cylinder rod of the secondary cutting cylinder to cut the electrode (10) fed downwards for the second time. The electrode (10) that has been cut for the first time is cut for the second time.

[0063] Meanwhile, the present invention further includes a discharge guide conveyor and a vision device.

[0064] The above discharge guide conveyor is arranged at a front position of the sub-feeder (136). When the electrode (10) transfer line is taken as the standard, the discharge guide conveyor is arranged at a front position of the sub-feeder (136), so that the electrode (10) cut for the second time by the secondary cutting unit (150) is fed toward the discharge guide conveyor by the sub-feeder (136), the electrode (10) cut for the second time is transferred by the discharge guide conveyor, and whether the electrode (10) is defective is determined by the vision device, and when the electrode (10) is defective, the defective electrode (10) is discharged by a defective discharge device (NG discharge device), and the good electrode (10) is configured to feed the second-cut electrode (10) to the next process line by the discharge guide conveyor.

[0065] For reference, in the present invention, if the side where the electrode (10) enters is called the electrode (10) input terminal, and the side where the electrode (10) exits is called the electrode (10) discharge terminal, the electrode (10) is transported along the electrode (10) transport path between the electrode (10) input terminal and the electrode (10) discharge terminal, and in the present invention, the main parts, the electrode supply unit (120), the electrode feeder (130), the first cutting unit (140), the second cutting unit (150), and the discharge guide conveyor, are configured to be arranged in order from the electrode (10) input terminal toward the electrode (10) discharge terminal.

[0066] Meanwhile, according to the present invention, a secondary battery ultra-high-speed dual cutting method is provided using a secondary battery ultra-high-speed dual cutting system including an electrode supply unit (120) for supplying an electrode (10) of a secondary battery, an electrode feeder (130) for feeding the electrode (10) supplied from the electrode supply unit (120) for cutting, a first cutting unit (140) for first cutting the electrode (10) supplied by the electrode feeder (130), and a second cutting unit (150) for second cutting the electrode (10) supplied from the first cutting unit (140).

[0067] The ultra-high-speed dual cutting method of the secondary battery of the present invention comprises: an electrode (10) feeding step of feeding the electrode (10) of the secondary battery from the electrode supply unit (120); an electrode (10) pre-cutting feeding step of feeding the electrode (10) to the first cutting unit (140) by the electrode feeder (130); a first cutting step of cutting the electrode (10) for the first time by the first cutting unit (140); a feeding step after the first cutting of feeding the electrode (10) cut for the first time to the second feeder (134) and the sub-feeder (136); a second cutting step of cutting the electrode (10) for the second time by the second cutting unit (150); and a second cutting step of feeding the electrode (10) cut for the second time to the second feeder (134). It is characterized by including a feeding step.

[0068]

[0069] The process of cutting the electrode (10) at ultra-high speed by the present invention having the above-described configuration is described as follows.

[0070] Figures 1 and 2 illustrate a one-cycle flow chart for cutting an electrode (10) using the secondary battery ultra-high-speed dual cutting system of the present invention.

[0071] First, the electrode (10) passing through the outer surface of the upper pre-feeding roller (126A) and the lower pre-feeding roller (126B) of the electrode supply unit (120) passes through the outer surface of the upper master feeding roller (132A) and the lower master feeding roller (132B), and the electrode (10) is stopped at the bottom of the first cutter (146), and the first cutter (146) is lowered to cut the electrode (10) for the first time, and the electrode (10) passing through the outer surface of the upper second feeding roller (134A) and the lower second feeding roller (134B), and the electrode (10) cut for the first time is stopped at the bottom of the second cutter (156), and the second cutter (156) is lowered to cut the electrode (10) for the second time, and the second The cut electrode (10) is fed toward the discharge guide conveyor via the outer surface of the upper sub-feeding roller (136A) and the lower sub-feeding roller (136B), and then the second-cut electrode (10) is fed to the next process line by the discharge guide conveyor.

[0072] Of course, as described above, the electrode (10) cut for the second time by the second cutting section (150) is fed toward the discharge guide conveyor by the sub feeder (136), the electrode (10) cut for the second time is transported by the discharge guide conveyor, and whether the electrode (10) is defective is determined by the vision device, and if the electrode (10) is defective, the defective electrode (10) is discharged by the defective discharge device (NG discharge device), and the good electrode (10) is fed to the next process line by the discharge guide conveyor as the second cut electrode (10).

[0073] Accordingly, the present invention is a device that cuts an electrode (10) supplied in the form of a reel at a high speed with a constant pitch according to the specifications of the product to be produced, conducts an appearance inspection, and then loads good and defective products into a magazine, thereby enabling production at least twice the amount previously used.

[0074]

[0075] It will be understood by those skilled in the art that the present invention is not limited to the above-described embodiments, and that various modifications and variations can be made without changing the gist of the present invention.

[0076] Accordingly, the embodiments described above are provided to fully inform a person having ordinary skill in the art of the present invention of the scope of the invention, and should be understood to be exemplary and not limiting in all respects, and the present invention is defined only by the scope of the claims.

[0077]

[0078] The present invention relates to a secondary battery ultra-high-speed dual cutting system and a secondary battery ultra-high-speed dual cutting method, and more specifically, to a secondary battery ultra-high-speed dual cutting system and a secondary battery ultra-high-speed dual cutting method for securing a new concept of cutting technology in a secondary battery notching process and changing the cutting unit compared to conventional equipment to maximize secondary battery production, and can be utilized as a useful technology in the relevant technical field.

Claims

1. An electrode supply unit (120) that supplies the electrode (10) of the secondary battery, An electrode feeder (130) that feeds the electrode (10) supplied from the electrode supply unit (120) for cutting, A primary cutting section (140) that primarily cuts the electrode (10) supplied by the electrode feeder (130), A secondary battery ultra-high-speed dual cutting system characterized by including a second cutting unit (150) that cuts the electrode (10) supplied from the first cutting unit (140) for the second time.

2. In paragraph 1, The above electrode supply unit (120) is A pre-feeding frame (122) placed on the electrode (10) input side for inserting the electrode (10) of the secondary battery, A pre-feeding bobbin (124) that is rotatably mounted on the above-mentioned pre-feeding frame (122) and has a secondary electrode (10) wound around its outer surface, A pre-feeding roller (126) positioned in front of the above-mentioned pre-feeding bobbin (124), A secondary battery ultra-high-speed dual cutting system characterized by including a notching mold (128) (2-cavity mold) disposed between the pre-feeding roller (126) and the electrode feeder (130).

3. In paragraph 2, The above pre-feeding roller (126) is composed of an upper pre-feeding roller (126A) and a lower pre-feeding roller (126B) that rotate in opposite directions and through which the electrode (10) passes on the outer surface. The above electrode feeder (130) is A master feeder (132) positioned at the front of the above notching mold (128), A secondary feeder (134) positioned in front of the above master feeder (132), A secondary battery ultra-high-speed dual cutting system characterized by including a sub-feeder (136) positioned in front of the secondary feeder (134).

4. In paragraph 3, The above master feeder (132) is A secondary battery ultra-high-speed dual cutting system characterized by including a pair of upper master feeding rollers (132A) and lower master feeding rollers (132B) that rotate in opposite directions so that both sides of the electrode (10) fed through the outer peripheral surface of the upper pre-feeding roller (126A) and lower pre-feeding roller (126B) forming the above-mentioned pre-feeding roller (126) pass in contact with the outer peripheral surface.

5. In paragraph 3, The above secondary feeder (134) is A secondary battery ultra-high-speed dual cutting system characterized by including a pair of upper secondary feeding rollers (134A) and lower secondary feeding rollers (134B) that rotate in opposite directions so that both sides of an electrode (10) pass through the outer surface of an upper master feeding roller (132A) and a lower master feeding roller (132B) forming the master feeder (132) in contact with each other.

6. In paragraph 3, The above sub-feeder (136) is A secondary battery ultra-high-speed dual cutting system characterized by including a pair of upper sub-feeding rollers (136A) and lower sub-feeding rollers (136B) that rotate in opposite directions so that both sides of an electrode (10) fed through the outer surface of an upper secondary feeding roller (134A) and a lower secondary feeding roller (134B) forming the secondary feeder (134) pass in contact with the outer surface.

7. In paragraph 3, A first cutting part (140) is placed between the master feeder (132) and the second feeder (134), The above first cutting part (140) is 1st cutting support frame (142), A first cutting lifting device (144) mounted on the first cutting support frame (142), A secondary battery ultra-high-speed dual cutting system characterized by including a primary cutter (146) that is elevated by the primary cutting elevator (144).

8. In paragraph 3, A secondary cutting part (150) is placed between the secondary feeder (134) and the sub-feeder (136), The above second cutting part (150) is A second cutting support frame (152) positioned in front of the first cutting support frame (142) based on the transfer direction of the electrode (10), A secondary cutting lifting device (154) mounted on the secondary cutting support frame (152), A secondary battery ultra-high-speed dual cutting system characterized by including a secondary cutter (156) that is elevated by the secondary cutting elevator (154).

9. A secondary battery ultra-high-speed dual cutting method using a secondary battery ultra-high-speed dual cutting system, characterized by including an electrode supply unit (120) for supplying an electrode (10) of a secondary battery, an electrode feeder (130) for feeding the electrode (10) supplied from the electrode supply unit (120) for cutting, a first cutting unit (140) for first cutting the electrode (10) supplied by the electrode feeder (130), and a second cutting unit (150) for second cutting the electrode (10) supplied from the first cutting unit (140). An electrode (10) feeding step for feeding the electrode (10) of the secondary battery in the above electrode supply unit (120), An electrode (10) first cutting feeding step in which the electrode (10) is fed to the first cutting section (140) by the electrode feeder (130), A first cutting step of cutting the electrode (10) for the first time by the first cutting section (140), A feeding step after the first cutting, in which the first cut electrode (10) is fed to the second feeder (134) and the sub-feeder (136), A second cutting step of cutting the electrode (10) a second time by the second cutting section (150), A secondary battery ultra-high-speed dual cutting method characterized by including a secondary cutting feeding step of feeding a second-cut electrode (10) to a second feeder (134).

Images