KR20220032734A - System for producing electrodes of battery - Google Patents

Abstract

The present invention relates to a system for producing a secondary battery, including an unwinding unit for supplying an electrode material including a coated unit and an uncoated unit; a notching unit for forming an electrode tab by notching the uncoated unit of the electrode material; and a meandering adjustment unit for adjusting the traveling direction of the electrode material, wherein a measurement unit disposed behind the notching unit to measure a first height of a cutting area of the coating unit in the electrode tab is included, and the meandering adjustment unit adjusts the traveling direction of the electrode material based on the first height measured by the measurement unit.

Description

Electrode production system for secondary batteries

The present invention relates to an electrode production system for secondary batteries.

In general, a chemical battery includes a positive electrode, a negative electrode, and an electrolyte, and refers to a battery that generates electrical energy using a chemical reaction, which is a disposable primary battery and a secondary battery that can be charged and discharged repeatedly. can be divided into

Due to the advantage of being able to charge and discharge, the use of secondary batteries is gradually increasing. Among such secondary batteries, since the lithium secondary battery has a high energy density per unit weight, it is widely used as a power source for electronic communication devices or a high-output hybrid vehicle.

An electrode used in such a secondary battery is used as a positive electrode and a negative electrode of the battery, and is used to electrically connect the battery and the outside of the battery.

The electrode is produced through a process of notching and cutting the electrode material on which the electrode tab is formed at regular intervals.

The electrode material is a band-shaped member and has a constant width. However, in the manufacturing process of the electrode material, it is common that both edges of the electrode material are bent, resulting in a degree of curvature. In particular, in order to realize a high capacity of an electric vehicle battery, the thickness of the electrode material is thinned and manufactured with a high density, so there is a problem that the change in the amount of camber of the electrode according to the degree of curvature becomes severe. In addition, the amount of deviation of the camber for each electrode to be supplied is large, and thus, there is a problem in that the electrode material travels obliquely on the roll.

In particular, when the electrode material entering the notched portion meanders, a defect occurs in the electrode tab.

Republic of Korea Patent Publication No. 10-2015-0089803 (published on Aug. 5, 2015)

An object of the present invention is to provide an electrode production system for a secondary battery capable of preventing the meandering of the electrode material of the roll in response to the amount of camber of the electrode material.

In the embodiment, an unwinding part for supplying an electrode material including a coated part and an uncoated part, a notching part for notching an uncoated part of the electrode material to form an electrode tab, and a meander for controlling the running direction of the electrode material A secondary battery production system including an adjustment unit, comprising a measuring unit disposed behind the notching unit to measure a first height of a cutting area of the coating unit in the electrode tab, and the meandering adjusting unit measuring the first height measured by the measuring unit 1 It is possible to provide a secondary battery production system that adjusts the running direction of the electrode material based on the height.

Preferably, the meander adjustment unit may include a first meander adjustment unit for rotating the roll about a first axis perpendicular to the axial direction of the roll for transferring the electrode material, and linearly moving the first axis.

Preferably, the meander adjustment unit may include a second meander adjustment unit for linearly moving the unwinding unit.

Preferably, the meander adjustment unit may adjust the width direction position of the electrode material through the second meander adjustment unit after adjusting the traveling direction of the electrode material through the first meander adjustment unit.

Preferably, further comprising a density unit disposed at the rear of the first meander adjustment unit, disposed between the first meander adjustment unit and the notch portion, a sensor for detecting a boundary line between the coated portion and the uncoated portion Including, the first meandering adjustment unit may adjust the running direction of the electrode material so that the boundary line of the coated portion and the uncoated portion is positioned at the first point where the sensor is located.

Preferably, it further comprises a feeding device disposed at the rear of the measuring unit, wherein the second meander adjustment unit, based on the front-rear center of the feeding device, can adjust the width direction position of the electrode material.

Preferably, the first meander adjustment unit includes a first member and a second member spaced apart from each other, and a first member and a second member disposed between the first member and the second member. A first roll rotatably coupled about a second axis, and a first roll disposed between the first member and the second member and rotatably coupled to the first member and the second member about a third axis 2 rolls and a third member rotatably coupled to the first member about the 1-1 axis perpendicular to the second axis, the first axis including a 1-1 axis and a 1-2 axis and a fourth member rotatably coupled to the second member about the 1-2 axis perpendicular to the third axis, and a base and a driving unit coupled to the fourth member, wherein the third member comprises: When the base is linearly movably coupled in a first direction, the fourth member is linearly movably coupled to the base in a second direction, and the second member is linearly moved by the fourth member, the It is coupled with the fourth member to rotate about a 1-2 axis, and the driving unit may provide a secondary battery production system for adjusting a linear movement amount of the fourth member.

Preferably, the second meander adjustment unit may be slidably coupled to a first base to which the unwinding unit is fixed, and to the first base.

According to the embodiment, in response to the amount of camber of the electrode material, there is an advantage that can automatically adjust the position of the roll.

According to the embodiment, there is an advantage in that it is possible to prevent meandering of various types of electrode materials having different camber amounts.

According to the embodiment, there is an advantage that can greatly reduce the occurrence of defects in the electrode by adjusting the running direction of the electrode material just before entering the notch.

According to the embodiment, by changing the running direction of the electrode material in the Densor unit and additionally changing the running direction of the electrode material before entering the notch, it is possible to adjust the meandering of the electrode material having a large amount of camber.

According to the embodiment, by adjusting the width direction position of the electrode material based on the front-rear center of the feeding device in which the electrode material is uniformly fixed in the width direction, there is an advantage of easy meandering adjustment.

1 is a front view showing an electrode production system for a secondary battery according to an embodiment;
2 is a plan view showing an electrode material;
3 is a view showing a notched part and a measuring part;
4 is a view showing the amount of camber of the electrode material;
5 is a view showing an electrode material having a relatively small amount of camber than the electrode material shown in FIG. 4;
6 is a view showing an electrode material having a relatively larger amount of camber than the electrode material shown in FIG. 4;
7 is a view showing an electrode material in which electrode tabs are formed;
8 is a block diagram showing a meandering adjustment unit;
9 is a front view showing the first meander adjustment unit;
10 is a side view showing the first meander adjustment unit;
11 is a plan view of the first roll and the second roll looking down from above;
12 is a view showing a state in which the running direction of the electrode material is adjusted to one side in the state of FIG. 11;
13 is a view showing a state in which the running direction of the electrode material is adjusted to the other side in the state of FIG. 11;
14 is a view showing a state in which the driving direction of the electrode material is adjusted based on the center of the width of the feeding device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The embodiments of the present invention are provided to more completely explain the present invention to those of ordinary skill in the art, and the following embodiments may be modified in various other forms, and the scope of the present invention It is not limited to the following examples. Rather, these examples are provided so that this disclosure will be more thorough and complete, and will fully convey the spirit of the invention to those skilled in the art.

The terminology used herein is used to describe specific embodiments, not to limit the present invention. As used herein, the singular form may include the plural form unless the context clearly dictates otherwise. Also, as used herein, “comprise” and/or “comprising” refers to the specific existence of the recited shapes, numbers, steps, actions, members, elements, and/or groups thereof. and does not exclude the presence or addition of one or more other shapes, numbers, movements, members, elements and/or groups. As used herein, the term “and/or” includes any one and all combinations of one or more of those listed items.

It is to be understood that although the terms first, second, etc. are used herein to describe various members, regions and/or regions, these members, parts, regions, layers, and/or regions should not be limited by these terms. Do. These terms do not imply a specific order, upper and lower, or superiority, and are used only to distinguish one member, region or region from another member, region or region. Accordingly, a first member, region, or region described below may refer to a second member, region, or region without departing from the teachings of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to drawings schematically illustrating embodiments of the present invention. In the drawings, variations of the illustrated shape may be expected, for example depending on manufacturing technology and/or tolerances. Accordingly, embodiments of the present invention should not be construed as limited to the specific shape of the region shown herein, but should include, for example, changes in shape caused by manufacturing.

The electrode production system for secondary batteries is a device for automatically and continuously producing electrodes used in secondary batteries.

Hereinafter, in the drawings, the direction indicated by the x-axis is the longitudinal direction of the electrode production system for secondary batteries, and represents the transfer direction of the electrode material. The direction indicated by the y-axis in the drawing is the front-back direction of the electrode production system for secondary batteries, the width direction of the electrode material, and the direction indicated by the z-axis is the height direction of the electrode production system for secondary batteries.

1 is a front view showing an electrode production system for a secondary battery according to an embodiment.

As shown in FIG. 1 , the electrode production system for a secondary battery according to the embodiment includes an unwinding unit 10 , a capacitor unit 20 , a notching unit 30 and a cutting unit, an alignment device, although not shown in the drawings. and magazines. The electrode material (S) formed of a strip-shaped metal plate extending horizontally from the unwinding part 10 of the entrance is supplied. The electrode material (S) may be formed of copper in the case of producing a negative electrode battery, and may be formed of aluminum in the case of producing a positive electrode battery.

Densor unit 20 guides the electrode material (S) supplied from the unwarring portion (10) to the notching portion (30), and the tension of the electrode material (S) in response to a change in the supply rate of the electrode material (S) Adjust.

The notched part 30 forms an electrode tab (Sc in FIG. 2) on the supplied electrode material S to produce an electrode. The notched part 30 forms an electrode tab Sc on the electrode material S through a mold that moves up and down. Specifically, by forming notches at regular intervals in the electrode material S, an electrode including an electrode tab Sc of a shape protruding to one side is produced. A feeding device (70 in FIG. 3 ) may be provided for continuously supplying electrodes from the rear of the notched part 30 by continuously moving the electrodes passing through the notched part 30 in a pulling method that continuously draws them. Such a feeding device can pull the electrode material (S) at different speeds or tensions that are repeated periodically.

The cutting unit 40 cuts the electrode to the required size of the product. The cut electrode is supplied to the alignment device and the magazine 50 . The alignment device and magazine 50 align and load the electrodes.

Figure 2 is a plan view showing the electrode material (S), Figure 3 is a view showing the notch portion and the measurement portion,

1 to 3 , the electrode material S may be divided into a coated portion Sa and an uncoated portion Sb. The uncoated portion Sb is a portion that is cut in the notched portion 30 and the remaining area is formed as the electrode tab Sc. The sensor 80 may be disposed at a first point (V1 in FIG. 2 ) positioned directly in front of the notch 30 based on the transfer direction (x) of the electrode material. The sensor 80 detects the boundary T between the coated portion Sa and the uncoated portion Sb. The measuring unit 90 may be disposed at a second point (V2 in FIG. 2 ) positioned immediately behind the notch 30 with respect to the transport direction (x).

4 is a view showing the amount of camber of the electrode material (S), FIG. 5 is a view showing the electrode material (S) having a relatively smaller amount of camber than the electrode material (S) shown in FIG. 4, FIG. 6 is It is a view showing an electrode material (S) having a relatively larger amount of camber than the electrode material (S) shown in FIG. 4 .

Various electrode materials (S) with different camber amounts may be supplied. For example, the camber amount CB' of the electrode material S shown in FIG. 5 is relatively smaller than the camber amount CB of the electrode material S shown in FIG. 4, while the electrode shown in FIG. The amount of camber (CB'') of the material (S) may be relatively larger than the amount (CB) of the camber of the electrode material (S) shown in FIG. 4 . Here, the amount of camber indicates the degree of curvature of the electrode material (S), and the difference between the position of the uncoated portion (Sb) at the tip of the electrode material (S) and the normal position of the uncoated portion (Sb) without the curve can be expressed as This amount of camber may be expressed based on the width direction (y) of the electrode material (S).

In this way, when the amount of camber is different for each electrode material (S), since the boundary (T in FIG. 2) between the coated part (Sa) and the uncoated part (Sb) is different for each electrode material (S), the electrode at the first point (V1) Even if the material S is checked for forward running, a defect may occur in the electrode tab Sc during the notching process after passing the first point V1. The sensor 80 is disposed at the boundary (T) of the coated portion (Sa) and the uncoated portion (Sb) and considering the entire length of the electrode material (S) disposed long along the transport direction (x), the first point Since (V1) is only one point, the actual electrode material (S) may meander even if the boundary between the coated part (Sa) and the uncoated part (Sb) is in the correct position at the first point (V1).

The measuring unit 90 is disposed immediately behind the notched unit 30 to solve this problem, and provides control information to the first meandering adjustment unit 61 in response to the electrode material S having a different camber amount.

7 is a view showing an electrode material S on which an electrode tab Sc is formed.

1 and 7 , the measuring unit 90 may acquire an image of the electrode material S coming out of the notched unit 30 at the second point V2 . The measuring unit 90 measures the cut first height (W) of the coating part (Sa) based on the width direction (y) of the electrode material (S) in the obtained image. If the meander adjustment is made in response to the camber amount of the electrode material S, the coating portion Sa is not cut, so there is no cut first height W, and the edge of the coating portion Sa maintains a straight line without a step difference. will do The measurement unit 90 may include a vision camera or a sensor.

8 is a block diagram illustrating a meandering adjustment unit.

Referring to FIG. 8 , the meander adjustment unit 60 may include a first meander adjustment unit 61 and a second meander adjustment unit 62 .

The first meander adjustment unit 61 adjusts the traveling direction of the electrode material by using the first height W measured by the measurement unit 90 .

This first meandering adjustment unit 61 rotates the roll around a first axis (C3, C4 in FIG. 9) perpendicular to the axial direction of the roll for transferring the electrode material (S), the first axis (C3, It is a device that moves C4) in a straight line.

After the second meander adjustment unit 62 adjusts the traveling direction of the electrode material in the first meander adjustment unit 61, based on the first height (W), the width of the electrode material input to the notch portion (30) Adjust the direction (y) position.

This second meander adjustment unit 62 linearly moves the unwinding unit 10, the densityr unit 20, and the first meander adjustment unit 61 along the front-rear direction y of the unwinding unit 10. it is a device

9 is a front view illustrating the first meander adjustment unit 61 , and FIG. 10 is a side view illustrating the first meander adjustment unit 61 .

9 and 10 , the first meander adjustment unit 61 includes a first member 110 and a second member 120 that are disposed to be spaced apart from each other.

The first member 110 and the second member 120 may be disposed to be spaced apart from each other in the front-rear direction (y). In addition, the first meander adjustment unit 61 may include a first roll 130 and a second roll 140 . The first roll 130 and the second roll 140 are disposed between the first member 110 and the second member 120 . The first roll 130 is rotatably disposed on the first member 110 and the second member 120 about the third axis C1, respectively. The second roll 140 is rotatably disposed on the first member 110 and the second member 120 about the fourth axis C2, respectively.

Based on the transport direction (x), the first roll 130 is an entry-side roll of the electrode material (S) based on the first meander adjustment unit 61, and the second roll 140 is the electrode material (S) ) may be an exit side roll. The axial direction of the third axis C1 and the axial direction of the fourth axis C2 are parallel to the front-rear direction y. The first roller 130 may be in contact with a nip roll (Z in FIG. 1 ) in order to increase frictional force.

The second roll 140 disposed on the exit side may be connected to the motor 150 . Accordingly, the second roll 140 may be a driving roll and the first roll 130 may be a driven roll. In the case of a thin electrode material (S), it is necessary to reduce the magnitude of the tension in the first meander adjustment unit 61. By rotating the second roll 140 through the motor 150, the electrode material (S) can reduce the tension of

The electrode material (S) enters the first roll 130 from the lower side of the reference line (Q), crosses the reference line (Q) in a diagonal direction, and enters the first roll 130 from the upper side of the reference line (Q). Hereinafter, the reference line Q refers to an imaginary line passing through the third axis C1 of the first roll 130 and the fourth axis C2 of the second roll. Since the electrode material (S) passes diagonally between the first roll 130 and the second roll 140, there is an advantage in that it is easy to change the running direction and adjust the tension of the electrode material (S) to prevent meandering.

The first axis includes a 1-1 axis C3 and a 1-2 axis C4.

The third member 160 may be disposed below the first member 110 . The first member 110 is rotatably coupled to the third member 160 about the 1-1 axis C3.

The fourth member 170 may be disposed below the second member 120 . The fourth member 170 is rotatably coupled to the second member 120 about the 1-2 axis C4.

The axial direction of the 1-1 axis C3 and the axial direction of the 1-2 th axis C4 are parallel to the height direction z. The position of the 1-1 axis C3 and the position of the 1-2 th axis C4 may be aligned with respect to the transport direction (x).

The third member 160 and the fourth member 170 are respectively disposed on the base 180 to be linearly movable with a constant stroke. The linear movement directions of the third member 160 and the fourth member 170 may be disposed to be inclined with the axial direction of the third axis C1 and the axial direction of the fourth axis C2 .

A power converter WS may be disposed on the fourth member 170 . The power converter WS converts the linear movement of the fourth member 170 into a rotational motion of the second member 120 that rotates about the 1-2 axis C4. In addition, the fourth member 170 may be coupled to the driving unit 190 . The driving unit 190 linearly moves the fourth member 170 . The driving unit 190 may include a motor and may be disposed so that an axial direction of the motor is parallel to a moving direction of the fourth member 170 . The motor of the driving unit 190 may include a lead screw connected to the fourth member 170 .

The third member 160 may linearly move in conjunction with the fourth member 170 as it linearly moves. Meanwhile, as the second member 120 rotates, the first member 110 may rotate in conjunction with each other.

11 is a plan view of the first roll 130 and the second roll 140 looking down from above.

Referring to FIG. 11 , the axial direction of the third axis C1 and the vertical direction of the fourth axis C2 are the forward travel directions A of the electrode material S. The 1-1 axis C3 and the 1-2 axis C4 are disposed between the third axis C1 and the fourth axis C2 based on the transport direction x.

12 is a view showing a state in which the traveling direction of the electrode material S is adjusted to one side in the state of FIG. 11 .

2 and 12, when the boundary between the coated portion Sa and the uncoated portion Sb of the electrode material S through the sensor 80 at the first point V1 is not located in the correct position , the driving unit 190 is the driving direction of the first roll 130 and the second roll 140 so that the boundary (T) of the coated portion (Sa) and the uncoated portion (Sb) of the electrode material (S) is in the correct position. change the

A process of changing the traveling directions of the first roll 130 and the second roll 140 is as follows.

For example, when the driving unit 190 operates, the fourth member 170 moves linearly. When the fourth member 170 moves linearly, the second member 120 may rotate in a clockwise direction about the 1-2 axis C4 in the drawing. Since the fourth member 170 moves linearly, the 1-2 axis C4 also moves linearly, and thus the second member 120 also moves linearly. As the fourth member 170 moves linearly, the third member 160 also linearly moves in conjunction with the fourth member 170 , and at the same time, the second member 120 rotates clockwise about the third axis C1. can do.

Since the first member 110 and the second member 120 rotate in the clockwise direction in this way, the third axis C1 of the first roll 130 and the fourth axis C2 of the second roll 140 are inclined. while the driving direction (A') of the electrode material (S) is changed to one side.

13 is a view showing a state in which the running direction of the electrode material S is adjusted to the other side in the state of FIG. 11 .

2 to 13 , the running direction of the electrode material S may be adjusted to the other side according to the meandering direction of the electrode material S.

A process of changing the driving directions of the first roll 130 and the second roll 140 corresponding thereto is as follows.

For example, when the driving unit 190 operates, the fourth member 170 linearly moves in a second direction different from the first direction. When the fourth member 170 moves linearly, the second member 120 may rotate in a counterclockwise direction about the 1-2 axis C4 in the drawing. Since the fourth member 170 moves linearly, the 1-2 axis C4 also moves linearly, and thus the second member 120 also moves linearly. As the fourth member 170 moves linearly, the third member 160 also moves linearly in conjunction with the fourth member 170 , and at the same time, the second member 120 moves counterclockwise around the third axis C1. can rotate

Since the first member 110 and the second member 120 rotate counterclockwise in this way, the third axis C1 of the first roll 130 and the fourth axis C2 of the second roll 140 are While tilting, the traveling direction (A') of the electrode material (S) is changed to the other side.

14 is a view showing a state in which the driving direction of the electrode material (S) is adjusted with respect to the center of the front-rear direction of the feeding device.

14, in the first meander adjustment unit 61, when adjusting the traveling direction of the electrode material (S), the center of the front-back direction of the feeding device 70 disposed at the rear of the notch 30 (CP) This could be the criterion. The feeding device 70 serves to supply the notched electrode to the cutting unit 40 . Since the feeding device 70 fixes the electrode in the front-rear direction y, it may be a reference for adjusting the running direction of the electrode material S in the first meandering adjustment unit 61 .

For example, a first distance D1 that is a linear distance from the width center CP of the starting point of the feeding device 70 to the measurement unit 90 , and a first height W detected by the measurement unit 90 ) Based on the trigonometric function, the first angle R1 can be calculated. If a trigonometric function is used based on the calculated first angle R1 and the second distance D2, the deviation amount X at the third point V3 may be calculated. The deviation amount X appears along the width direction y.

Here, the second distance D2 means a straight-line distance from the width center CP of the starting point of the feeding device 70 to the third point V3. Here, the third point (V3) may correspond to the position of the first meander adjustment unit 61 with respect to the transfer direction (x) of the electrode material. For example, the third point V3 may correspond to the position of the second roll 140 of the first meander adjustment unit 61 based on the transfer direction x of the electrode material.

The first meander adjustment unit 61 may adjust the running direction of the electrode material (S) based on the deviation amount (X).

Referring to FIG. 3 , the second meandering adjustment unit 62 may include a first base 62a and a second base 62b. The first base 62a may include the unwinding unit 10 , the density unit 20 , and the first meandering adjustment unit 61 fixed thereto. The second base 62b is disposed below the first base 62a. The first base 62a is slidably disposed along the second base 62b. The first base 62b or the second base 62b may be provided with a motor for providing power and various power transmission means for converting the rotational motion of the motor into a linear motion.

When the first base 62a moves along the front-rear direction (y), the first meander adjustment unit 61 moves together as a whole along the front-rear direction (y), and the coating part (Sa) at the first point (V1) and the position of the boundary T of the uncoated portion Sb is adjusted.

The process of meandering adjustment using the first meander adjustment unit 61 and the second meander adjustment unit 62 is as follows.

First, through the first meander adjustment unit 61, the first height (W) to match the reference dimension, based on the deviation amount (X) to adjust the running direction of the electrode material (S).

When the traveling direction of the electrode material (S) is adjusted by the first meandering adjustment unit (61), at the first point (V1), the boundary (T) between the coated portion (Sa) and the uncoated portion (Sb) is in the correct position located outside of This is confirmed through the sensor 80 .

Next, the second meandering adjustment unit 62 confirms the position of the boundary (T) between the coated portion (Sa) and the uncoated portion (Sb) detected by the sensor 80, and the boundary (T) is at the correct position. position, the front-back direction (y) position of the first meander adjustment unit 61 can be adjusted.

In this way, by using the second meandering adjusting unit 62 together with the first meandering adjusting unit 61, it is possible to effectively prevent the occurrence of defects in the electrode tab in response to various electrode materials having different camber amounts.

As described above, specific embodiments of the electrode production system for secondary batteries of the present invention have been described, but it is apparent that various implementation modifications are possible within the limits that do not depart from the scope of the present invention.

Therefore, the scope of the present invention should not be limited to the described embodiments, and should be defined by the following claims as well as the claims and equivalents.

That is, it should be understood that the above-described embodiments are illustrative in all respects and not restrictive, and the scope of the present invention is indicated by the claims to be described later rather than the detailed description, and the meaning and scope of the claims; All changes or modifications derived from the concept of equivalents thereof should be construed as being included in the scope of the present invention.

10: unwinding part
20: Densor unit
30: notching part
40: cutting part
50: Alignment device and magazine
60: meandering coordination unit
61: first meander adjustment unit
62: second meander adjustment unit
70: feeding device
80: sensor
90: measurement unit
110: first member
120: second member
130: first roll
140: second roll

Claims (8)

An unwinding part for supplying an electrode material including a coated part and an uncoated part, a notching part for notching an uncoated part of the electrode material to form an electrode tab, and a meandering adjustment part for controlling the running direction of the electrode material. A secondary battery production system comprising:
a measuring part disposed behind the notched part to measure a first height of the cutting area of the coating part in the electrode tab;
The meander adjustment unit is a secondary battery production system for adjusting the traveling direction of the electrode material based on the first height measured by the measurement unit. According to claim 1,
The meander adjustment unit rotates the roll about a first axis perpendicular to the axial direction of the roll for transferring the electrode material, and a first meander adjustment unit for linearly moving the first axis secondary battery production system. 4. The method of claim 3,
The secondary battery production system including a second meander adjustment unit for linearly moving the unwinding unit in the meander adjustment unit. 4. The method of claim 3,
Secondary battery production system for adjusting the width direction position of the electrode material through the second meander adjustment unit after the meander adjustment unit adjusts the running direction of the electrode material through the first meander adjustment unit. According to claim 1,
Further comprising a density unit disposed at the rear of the first meander control unit,
It is disposed between the first meander adjustment unit and the notch portion, including a sensor for detecting a boundary line between the coated portion and the uncoated portion,
The first meander adjustment unit is a secondary battery production system for adjusting the running direction of the electrode material so that the boundary line of the coated part and the uncoated part is positioned at the first point where the sensor is located. According to claim 1,
Further comprising a feeding device disposed behind the measurement unit,
The second meander adjustment unit is a secondary battery production system for adjusting the width direction position of the electrode material based on the front-rear center of the feeding device. According to claim 1,
The first meander adjustment unit,
first and second members spaced apart from each other;
a first roll disposed between the first member and the second member and rotatably coupled to the first member and the second member about a second axis;
a second roll disposed between the first member and the second member and rotatably coupled to the first member and the second member about a third axis;
The first axis includes a 1-1 axis and a 1-2 axis,
a third member rotatably coupled to the first member about the 1-1 axis perpendicular to the second axis; and
a fourth member rotatably coupled to the second member about the 1-2 axis perpendicular to the third axis;
base; and
and a driving unit coupled to the fourth member,
The third member is coupled to the base to be linearly movable along the first direction,
The fourth member is coupled to the base to be linearly movable along the second direction,
The second member is coupled to the fourth member to rotate about the 1-2 axis when the fourth member moves linearly,
The driving unit is a secondary battery production system for adjusting the linear movement amount of the fourth member. 4. The method of claim 3,
The second meander adjustment unit includes a first base to which the unwinding unit is fixed, and a secondary battery production system slidably coupled to the first base.

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