Apparatus for Manufacturing Electrode Plates for Secondary Battery and Driving Method thereof

Abstract

The electrode plate manufacturing apparatus for a secondary battery and the driving method thereof according to the present invention may include a punch for notching the electrode plate, a die disposed below the punch and supporting the electrode plate, a load sensor mounted on the punch or the die, and a programmable logic controller that corrects the degree of equilibrium between the punch and the die according to a load value measured by the load sensor. According to the present invention, the parallelism between the punch and the die can be checked and corrected using a load sensor, thereby improving electrode plate forming and safety.

Description

Technology Field

[0001] An embodiment of the present invention relates to an apparatus for manufacturing electrode plates for a secondary battery and a method for driving the same. Background Technology

[0002] Unlike primary batteries, which cannot be recharged, secondary batteries are batteries capable of both charging and discharging. Low-capacity secondary batteries are used in small portable electronic devices such as smartphones, feature phones, laptop computers, digital cameras, and camcorders, while high-capacity secondary batteries are widely used as power sources for motor drive systems and power storage batteries in hybrid and electric vehicles. Such secondary batteries include an electrode assembly consisting of a positive electrode and a negative electrode, a case housing the assembly, and electrode terminals connected to the electrode assembly.

[0003] Among the methods for manufacturing electrode assemblies of such secondary batteries, there is a method of notching electrode plates into a specific shape to form unit electrode plates or substrate tabs. A substrate tab is a structure used to electrically connect the electrode assembly to the outside. A press machine is used to notch the substrate tabs. Such a press machine includes an upper mold and a lower mold, and a punch and a die may be equipped in the upper and lower molds, respectively. Here, the die supports the electrode plate to be notched, and the punch can notch the electrode plate seated in the die.

[0004] However, if the parallelism between the upper and lower molds is not correct, not only is forming the electrode plate difficult, but the edge areas of the die and punch may collide with each other, potentially causing wear or damage.

[0005] The information described above disclosed in the background technology of this invention is intended only to enhance understanding of the background of the present invention and may therefore include information that does not constitute prior art. The problem to be solved

[0006] The present invention aims to provide an apparatus for manufacturing electrode plates for secondary batteries and a method for driving the same, which can improve electrode plate forming and safety by checking and correcting the parallelism between the punch and the die in real time through a load sensor.

[0007] However, the technical problems that the present invention aims to solve are not limited to those described above, and other unmentioned problems can be clearly understood by those skilled in the art from the description of the invention below. means of solving the problem

[0008] An apparatus for manufacturing an electrode plate for a secondary battery and a driving method thereof according to the present invention for solving the above technical problem may include a punch for notching an electrode plate, a die disposed below the punch and supporting the electrode plate, a load sensor mounted on the punch or the die, and a programmable logic controller that corrects the degree of equilibrium between the punch and the die according to a load value measured by the load sensor.

[0009] The above programmable logic controller is electrically connected to the load sensor and can receive a load signal, which is a load value according to time measured by the load sensor.

[0010] It further includes a balance controller electrically connected to the above-mentioned programmable logic controller to receive a correction signal, and the balance controller can correct the parallelism of the punch according to the correction signal.

[0011] It further includes a database electrically connected to the above-mentioned programmable logic controller, wherein the database may store load data over time according to the degree of equilibrium between the die and the punch.

[0012] The above database may store standard conditions in which the degree of equilibrium between the die and the punch matches, and time-dependent load data for cases where the punch is rotated to the left and right of the x-axis and to the left and right of the y-axis relative to the die.

[0013] The above programmable logic controller can compare the load signal received from the load sensor with the load data in the database, verify the parallelism between the die and the punch through the matching data, and generate a correction signal.

[0014] The apparatus further includes an upper mold comprising the above punch and having a parallelism with the above punch, and a lower mold comprising the above die and having a parallelism with the above die, wherein the parallelism controller may be mounted on the upper side of the upper mold.

[0015] The above parallelism controller can control the x-axis movement and rotation, y-axis movement and rotation, and z-axis movement and rotation of the upper mold according to the correction signal.

[0016] The above load sensor is a bolt-type piezo load sensor and can be directly mounted on the die or the punch.

[0017] A driving method for a secondary battery electrode manufacturing device comprising a punch for notching an electrode plate, a die disposed below the punch and supporting the electrode plate, a load sensor mounted on the punch or the die, a database in which load data regarding the degree of balance between the die and the punch is stored over time, and a programmable logic controller that determines a balance correction amount by comparing a load value measured by the load sensor with the load data stored in the database, may include a first step of notching an electrode plate placed on the die by the punch; a second step of measuring a load signal, which is a load value over time, by the load sensor; a third step in which the programmable logic controller confirms the degree of balance by comparing the load signal received from the load sensor with the load data stored in the database and determines a correction signal, which is a balance correction amount; and a fourth step of correcting the degree of balance between the punch and the die by the balance correction signal.

[0018] In the second step above, when the electrode plate is notched by the punch, the load sensor can measure the load value over time.

[0019] In the above fourth step, a parallelism controller that receives a correction signal from the programmable logic controller can correct the parallelism of the punch according to the correction signal.

[0020] The above parallelism controller can control the x-axis movement and rotation, y-axis movement and rotation, and z-axis movement and rotation of the punch according to the correction signal.

[0021] The above database may store load data over time for a standard state in which the degree of equilibrium between the die and the punch matches, and for cases where the punch is rotated to the left and right of the x-axis and to the left and right of the y-axis relative to the die.

[0022] The third step above may include: a step of comparing a load signal received from the load sensor with load data in the database in the programmable logic controller to determine the parallelism between the die and the punch through matching data; and a step of generating a correction signal in the programmable logic controller so that the parallelism between the die and the punch becomes a standard state. Effects of the invention

[0023] The electrode plate manufacturing apparatus for a secondary battery and the driving method thereof according to the present invention can improve electrode plate forming and safety by checking and correcting the parallelism between the punch and the die through a load sensor.

[0024] However, the effects obtainable through the present invention are not limited to those described above, and other unmentioned technical effects will be clearly understood by those skilled in the art from the description of the invention below. Brief explanation of the drawing

[0025] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings. FIG. 1 is a schematic diagram briefly illustrating an electrode plate manufacturing apparatus for a secondary battery according to one embodiment of the present invention. FIG. 2 is a perspective view illustrating the main configuration of the electrode plate manufacturing device according to FIG. 1. Figure 3 is a cross-sectional view taken along the 3-3' line of Figure 2. FIG. 4 is a perspective view illustrating the punch, die, and load sensor shown in FIG. 3. Figure 5 is a cross-sectional view taken along the 5-5' line of Figure 4. Figure 6 is a cross-sectional view taken along the 6-6' line of Figure 4. Figure 7 is an example of load values ​​over time stored in a database in the electrode plate manufacturing device for a secondary battery of Figure 1. Figure 8 is a flowchart illustrating the driving method of a electrode plate manufacturing device. Figure 9 is an example of a load measurement value over time measured by a load sensor of the electrode plate manufacturing device for a secondary battery of Figure 1. Specific details for implementing the invention

[0026] Preferred embodiments of the present invention will be described in detail below with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings. Instead, based on the principle that the inventor can appropriately define the concepts of terms to best describe their invention, they should be interpreted in a meaning and concept consistent with the technical spirit of the present invention. Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely some of the most preferred embodiments of the present invention and do not represent all of the technical spirit of the present invention. It should be understood that various equivalents and modifications capable of replacing them may exist at the time of filing this application.

[0027] Additionally, as used herein, “comprise, include” and / or “comprising, including” specify the presence of the mentioned features, numbers, steps, actions, parts, elements, and / or groups thereof, and do not exclude the presence or addition of one or more other features, numbers, actions, parts, elements, and / or groups.

[0028] Additionally, to aid in understanding the invention, the attached drawings are not drawn to actual scale, and the dimensions of some components may be exaggerated. Furthermore, the same reference numerals may be assigned to identical components in different embodiments.

[0029] The statement that two subjects of comparison are 'identical' means that they are 'substantially identical.' Therefore, substantial identity may include deviations considered low in the industry, for example, deviations within 5%. Additionally, the statement that a parameter is uniform in a given area may mean that it is uniform from an average perspective.

[0030] Although terms such as "first," "second," etc., are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used merely to distinguish one component from another, and unless specifically stated otherwise, the first component may also be the second component.

[0031] Throughout the specification, unless specifically stated otherwise, each component may be singular or plural.

[0032] The fact that any configuration is placed on the "upper (or lower)" of a component or on the "upper (or lower)" of a component may mean not only that any configuration is placed in contact with the upper (or lower) surface of said component, but also that another configuration may be interposed between said component and any configuration placed on (or below) said component.

[0033] Furthermore, where it is stated that one component is "connected," "coupled," or "connected" to another component, it should be understood that while said components may be directly connected or connected to each other, another component may be "interposed" between each component, or that each component may be "connected," "coupled," or "connected" through another component. Additionally, when it is stated that a part is electrically coupled with another part, this includes not only cases where they are directly connected but also cases where they are connected with an intermediate element in between.

[0034] Throughout the specification, "A and / or B" means A, B, or A and B unless specifically stated otherwise. That is, "and / or" includes any combination or any combination of the enumerated items. "C to D" means C or more and D or less, unless specifically stated otherwise.

[0035] The terms used in this specification are intended to describe embodiments of the present disclosure and are not intended to limit the present disclosure.

[0036] Hereinafter, an apparatus for manufacturing an electrode plate for a secondary battery according to embodiments of the present invention will be described in detail with reference to the attached drawings.

[0037] FIG. 1 is a schematic diagram briefly illustrating an electrode plate manufacturing apparatus for a secondary battery according to one embodiment of the present invention. FIG. 2 is a perspective view illustrating the main components of the electrode plate manufacturing apparatus according to FIG. 1, FIG. 3 is a cross-sectional view taken along line 3-3' of FIG. 2, and FIG. 4 is a perspective view illustrating the punch, die, and load sensor shown in FIG. 3. FIG. 5 is a cross-sectional view taken along line 5-5' of FIG. 4, and FIG. 6 is a cross-sectional view taken along line 6-6' of FIG. 4.

[0038] Hereinafter, with reference to FIGS. 1 to 6, an apparatus (10) for manufacturing a secondary battery electrode plate according to the present invention will be described. Here, the apparatus (100) for manufacturing a secondary battery electrode plate may be a device for notching an electrode plate installed in a press machine. Here, notching may refer to a process of cutting the electrode plate to correspond to the shape of a punch.

[0039] A secondary battery electrode manufacturing device (100) may include an upper slide (110) and a lower slide (120) for operating a mold (140), a balance controller (130) for controlling the balance of the mold (140), a mold (140) for performing notching, and a programmable logic controller (PLC: Programmable Logic Controller, 150) for controlling the mold (140). Additionally, the secondary battery electrode manufacturing device (100) may include a database (160) electrically connected to the programmable logic controller (150).

[0040] Here, in the secondary battery electrode manufacturing device (100), as the upper slide (110) moves toward the lower slide (120), the electrode plate can be notched by a mold (140) interposed between the upper slide (110) and the lower slide (120). The upper slide (110) can move in an up-and-down direction to apply pressure to the notching target located within the mold (140). The mold (140) includes an upper mold (141) and a lower mold (142), and the upper mold (141) and the lower mold (142) may each be equipped with a punch (180) and a die (170). Here, the punch (180) may be aligned with the upper mold (141), and the die (170) may be aligned with the lower mold (142). For example, the punch (180) may be part of the upper mold (141) and the die (170) may be part of the lower mold (142). The punch (180) can punch the electrode plate that is the notching target seated in the die (170).

[0041] The balance controller (130) is mounted on the upper side of the upper mold (140) and can control the x-axis movement and rotation, y-axis movement and rotation, and z-axis movement and rotation of the upper mold (141). That is, the balance controller (130) can control the balance between the punch (180) and the die (170) by controlling the movement and rotation of the upper mold (140).

[0042] Such a balance controller (130) may be a hexapod. Such a balance controller (130) may be electrically connected to a programmable logic controller (150) and operate by receiving a correction signal. That is, the balance controller (130) can control the balance between the punch (180) and the die (170) to become a standard state by means of the correction signal received from the programmable logic controller (150).

[0043] The die (170) serves to support the notching target at the bottom of the punch (180). The die (170) can be penetrated by the punch hole (171). The punch (180) can be located above the punch hole (171) in the die (170). The punch (180) can be inserted into the punch hole (171) to notch the electrode plate.

[0044] The punch (180) functions to notch a notching target, such as an electrode plate, into a predetermined shape. For example, the notching target may be an electrode plate that is a negative or positive electrode. The electrode plate can be notched to form a unit electrode plate, or the unnotched portion of the electrode plate can be punched to form a negative substrate tab or a positive substrate tab. The upper mold (141) descends, and the punch (180) descends while in contact with the punch hole (171) of the die (170), thereby notching the electrode plate. When notching is completed, the upper mold (141) rises again and returns to its original position. Such lowering and raising of the upper mold (141) can be operated by the upper slide (110).

[0045] Here, a load sensor (190) may be mounted on at least one of the die (170) and the punch (180). For example, FIG. 4 shows a load sensor (190) mounted on the upper side of the punch (180), but the load sensor (190) may be mounted on the die (170). Multiple load sensors (190) may be mounted on the die (170) and / or the punch (180), and the number may vary. That is, the number of load sensors (190) is not limited in the present invention. Here, the die (170) and the punch (180) including the load sensor (190) may be referred to as a notching unit (101).

[0046] The load sensor (190) is electrically connected to the programmable logic controller (150) so that the sensed load value can be transmitted to the programmable logic controller (150). For example, the load sensor (190) may be a bolt-type piezo load sensor and may be mounted directly to the die (170) and / or punch (180). Here, the sensed load value may be a load value over time, which will be explained in detail below.

[0047] The load sensor (190) may not measure a load value in a standard state where the parallelism of the punch (180) and the die (170) matches. That is, the load value measured by the load sensor (190) in the standard state may be 0.

[0048] Additionally, the load sensor (190) can measure a load value over time when the parallelism of the punch (180) and the die (170) does not match. That is, when the parallelism of the punch (180) and the die (170) does not match, the edge regions of the punch (180) and the die (170) collide with each other, and a load value can be measured by the load sensor (190).

[0049] For example, referring to FIG. 5, the case where the punch (180) is tilted 0.1 degree to the left of the x-axis is illustrated. At this time, the lower left edge region (A) of the punch (180) collides with the die (170) adjacent to the punch hole (171), and a load value can be measured by the load sensor (190).

[0050] Also, referring to FIG. 6, the case where the punch (180) is tilted 0.1 degree to the left of the y-axis is illustrated. At this time, the lower left edge region (B) of the punch (180) collides with the die (170) adjacent to the punch hole (171), and a load value can be measured by the load sensor (190).

[0051] In this way, the load sensor (190) can transmit a load signal, which is a load value according to the measured time, to the programmable logic controller (150). Here, the load sensor (190) can periodically transmit the load signal to the programmable logic controller (150). The programmable logic controller (150) can check the parallelism status of the punch (180) and the die (170) by comparing the load signal transmitted from the load sensor (190) with the load data stored in the database (160). Here, the parallelism status may refer to the degree of misalignment between the punch (180) and the die (170).

[0052] In the database (160), load data over time may be stored according to the parallelism of the punch (180) and the die (170). FIG. 7 illustrates an example of the parallelism of the punch (180) and the die (170) and load data over time stored in the database (160). Here, each load data may have the x-axis as time and the y-axis as the load value.

[0053] As illustrated in FIG. 7, the database (160) stores load data over time for a standard state, and for cases where the punch (180) rotates to the left and right along the x-axis relative to the die (170) relative to the standard state, and for cases where the punch (180) rotates to the left and right along the y-axis relative to the die (170). In FIG. 7, each load data may be load data for the x-axis rotation degree (Rx), which is the degree to which the punch (180) rotates along the x-axis relative to the die (170), and the y-axis rotation degree (Ry), which is the degree to which the punch (180) rotates along the y-axis relative to the die (170). Here, the degree to which the punch (180) rotates 0.1 degrees to the left relative to the die (170) is indicated as m01, and the degree to which the punch (180) rotates 0.1 degrees to the right relative to the die (170) is indicated as p01.

[0054] For example, in the database (160), load data when the x-axis rotation degree (Rx) is -0.1 degrees and the y-axis rotation degree (Ry) is 0.1 degrees can be indicated as Rx_m01 and Ry_p01. Here, an x-axis rotation degree (Rx) of -0.1 degrees means that in the punch (180) and die (170) shown in FIG. 5, the punch (180) is rotated 0.1 degrees to the left relative to the die (170). That is, an x-axis rotation degree (Rx) of -0.1 degrees and 0.1 degrees can mean a rotation of 0.1 degrees to the left and a rotation of 0.1 degrees to the right, respectively, in FIG. 5.

[0055] Additionally, a rotation of 0.1 degrees along the y-axis means that the punch (180) rotates 0.1 degrees to the right relative to the die (170) in the punch (180) and die (170) shown in FIG. 6. That is, -0.1 degrees and 0.1 degrees of rotation along the y-axis (Ry) may mean a rotation of 0.1 degrees to the left and a rotation of 0.1 degrees to the right, respectively, in FIG. 6.

[0056] As illustrated in FIG. 7, the database (160) may store load data over time for x-axis rotation degrees (Rx) of -0.1 degrees and 0.1 degrees and y-axis rotation degrees (Ry) of -0.1 degrees and 0.1 degrees. Of course, for example, the load data stored in the database (160) may store load data over time for cases where the x-axis rotation degree (Rx) and y-axis rotation degree (Ry) are 0.2 or greater, but this is not limited thereto. Here, the database (160) may be information accumulated and stored by measuring load values ​​over time for x-axis rotation degrees (Rx) and y-axis rotation degrees (Ry) in a punch (180) and a die (170) of the same structure and shape. That is, the load data stored in the database (160) may change according to the shape of the punch (180) and the die (170).

[0057] A programmable logic controller (150) receives a load value measured by a load sensor (190) and controls the movement and rotation of the upper mold (141) by comparing it with load data stored in a database (160), thereby maintaining the balance between the punch (180) and the die (170). A flowchart of a driving method for maintaining the balance of such a secondary battery electrode manufacturing device is shown in FIG. 8. Below, with reference to FIG. 1 to 7, the driving method of the secondary battery electrode manufacturing device shown in FIG. 8 will be explained.

[0058] First, in the secondary battery electrode manufacturing device (100), the electrode plate seated on the die (170) can be notched (S1) by the punch (180) provided in the upper mold (141) as the upper slide (110) moves downward.

[0059] At this time, a load value over time can be measured (S2) by the load sensor (190). Additionally, the load signal, which is the load value over time sensed by the load sensor (190), can be transmitted to the programmable logic controller (150). Referring to FIG. 9, an example of a load signal (C), which is the load value over time measured by the load sensor (190) of the electrode plate manufacturing device for a secondary battery of FIG. 1, is shown. Below, the load signal (C) shown in FIG. 9 will be described as the load value measured by the load sensor (190).

[0060] The programmable logic controller (150) can check the degree of balance by comparing the load signal (C) received from the load sensor (190) with the load data stored in the database (160) and determine the amount of balance correction (S3).

[0061] First, the programmable logic controller (150) can determine the degree of rotation of the x-axis (Rx) and the degree of rotation of the y-axis (Ry) by comparing the load signal (C) received from the measured load sensor (190) with the load data stored in the database (160). That is, the programmable logic controller (150) can determine the degree of balance between the punch (180) and the die (170) by determining that the load signal (C) is matched with Rx_0 and Ry_p01 stored in the database (160), so there is no degree of rotation of the x-axis (Rx) and the degree of rotation of the y-axis (Ry) is rotated to the right by 0.1 degree. The programmable logic controller (150) can determine the amount of correction based on the determined degree of balance between the punch (180) and the die (170). Here, the correction amount is a value opposite to the degree of parallelism between the punch (180) and the die (170), and may be a value that causes the distance between the punch (180) and the die (170) to be in a standard state. That is, the programmable logic controller (150) can generate a correction signal to rotate the upper mold (141) by 0.1 degrees to the left with a y-axis rotation degree (Ry) as a correction amount for the load signal (C) and transmit it to the parallelism controller (130). The parallelism controller (130) can correct (S4) the parallelism of the upper mold (141) in accordance with the correction signal received from the programmable logic controller (150). As a result, the punch (180) mounted on the upper mold (141) can be corrected to rotate 0.1 degrees to the left with respect to the y-axis, thereby making the parallelism of the die (170) and the punch (180) match a standard state.

[0062] In addition, after the parallelism is corrected, the process can be repeated in the order of the flowchart of the driving method for maintaining the parallelism of the electrode plate manufacturing device for a secondary battery, thereby reconfirming whether the load signal is in a standard state. That is, by repeatedly executing the driving method of the electrode plate manufacturing device for a secondary battery, it is possible to confirm whether the parallelism correction of the die (170) and the punch (180) has been properly performed.

[0063] The electrode plate manufacturing device (100) for such a secondary battery improves electrode plate forming and safety by checking and correcting the parallelism between the punch (180) and the die (170) in real time through a load sensor.

[0064] The above description is merely one embodiment for implementing the present invention, and the present invention is not limited to the above-described embodiment. The technical spirit of the present invention extends to the scope in which various modifications can be made by anyone with ordinary knowledge in the field to which the invention belongs, without departing from the essence of the invention as claimed in the following patent claims. Explanation of the symbols

[0065] 100: Electrode removal device for secondary batteries 110: Upper slide 120: Lower slide 130: Balance controller 140: Mold 141: Upper mold 142: Lower mold 150: Programmable logic controller 160: Database 170: Die 180: Punch 190: Load sensor

Claims

Claim 1 A secondary battery electrode plate manufacturing apparatus comprising: a punch for notching an electrode plate; a die disposed below the punch and supporting the electrode plate; a load sensor mounted on the punch or the die; and a programmable logic controller for correcting the degree of equilibrium between the punch and the die according to a load value measured by the load sensor. Claim 2 In claim 1, the programmable logic controller is electrically connected to the load sensor and receives a load signal, which is a load value according to time measured by the load sensor, for a secondary battery electrode plate manufacturing device. Claim 3 The electrode plate manufacturing apparatus for a secondary battery according to claim 1 further comprises a balance controller electrically connected to the programmable logic controller to receive a correction signal, wherein the balance controller corrects the parallelism of the punch according to the correction signal. Claim 4 An electrode plate manufacturing apparatus for a secondary battery according to claim 1, further comprising a database electrically connected to the programmable logic controller, wherein the database stores load data over time according to the degree of equilibrium between the die and the punch. Claim 5 A secondary battery electrode plate manufacturing apparatus according to claim 4, wherein the database stores a standard state in which the degree of equilibrium between the die and the punch matches, and time-dependent load data for cases where the punch is rotated to the left and right of the x-axis and to the left and right of the y-axis relative to the die. Claim 6 In claim 4, the programmable logic controller compares a load signal received from the load sensor with load data in the database, verifies the parallelism between the die and the punch through matching data, and generates a correction signal for a secondary battery electrode plate manufacturing device. Claim 7 In claim 3, the apparatus for manufacturing electrode plates for a secondary battery further comprises: an upper mold including the punch and having a parallelism that matches the punch; and a lower mold including the die and having a parallelism that matches the die, wherein the parallelism controller is mounted on the upper side of the upper mold. Claim 8 In claim 7, the parallelism controller controls the x-axis movement and rotation, y-axis movement and rotation, and z-axis movement and rotation of the upper mold according to the correction signal, in a secondary battery electrode plate manufacturing device. Claim 9 In claim 1, the load sensor is a bolt-type piezo load sensor and is a secondary battery electrode plate manufacturing device directly mounted on the die or the punch. Claim 10 A method for driving a secondary battery electrode plate manufacturing apparatus comprising: a punch for notching an electrode plate; a die disposed below the punch and supporting the electrode plate; a load sensor mounted on the punch or the die; a database in which load data regarding the degree of balance between the die and the punch is stored, wherein load data over time is stored, and a programmable logic controller that determines a balance correction amount by comparing a load value measured by the load sensor with the load data stored in the database, the method comprising: a first step of notching an electrode plate seated on the die by the punch; a second step of measuring a load signal, which is a load value over time, from the load sensor; a third step in which the programmable logic controller confirms the degree of balance by comparing the load signal received from the load sensor with the load data stored in the database and determines a correction signal, which is a balance correction amount; and a fourth step of correcting the degree of balance between the punch and the die by the balance correction signal. Claim 11 In claim 10, the second step is a method of driving a secondary battery electrode plate manufacturing device that measures a load value over time at the load sensor when the electrode plate is notched by the punch. Claim 12 In claim 10, the fourth step is a driving method for a secondary battery electrode manufacturing device in which a balance controller that receives a correction signal from the programmable logic controller corrects the parallelism of the punch according to the correction signal. Claim 13 In claim 12, the parallelism controller controls the x-axis movement and rotation, y-axis movement and rotation, and z-axis movement and rotation of the punch according to the correction signal, a driving method for a secondary battery electrode plate manufacturing device. Claim 14 A driving method for a secondary battery electrode plate manufacturing device according to claim 10, wherein the database stores a standard state in which the degree of equilibrium between the die and the punch matches, and time-dependent load data for cases where the punch is rotated to the left and right of the x-axis and to the left and right of the y-axis relative to the die. Claim 15 In claim 10, the third step comprises: a step of comparing a load signal received from a load sensor with load data in a database in a programmable logic controller to determine the parallelism between the die and the punch through matching data; and a step of generating a correction signal in the programmable logic controller to ensure that the parallelism between the die and the punch becomes a standard state.

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