Electrode manufacturing apparaus and a controlling mehtod of the same

Abstract

The present invention relates to an electrode manufacturing facility and a method for controlling the same, and more specifically, to an electrode manufacturing facility and a method for controlling the same that can effectively prevent fracture of an electrode substrate. According to one embodiment of the present invention, a control method for an electrode equipment that performs an electrode process on an electrode substrate in a roll-to-roll continuous process may be provided, comprising: a driving step of driving a driving roll to transport an electrode substrate; a tension control step of detecting tension applied to an electrode substrate through a tension meter and controlling tension applied to an electrode substrate by adjusting the speed of the driving roll based on the detected tension; and a tension cut prevention step of calculating a torque change rate of the driving roll and stopping the driving of the coater equipment when the calculated torque change rate exceeds a threshold value.

Description

Technology Field

[0001] The present invention relates to an electrode manufacturing facility and a method for controlling the same, and more specifically, to an electrode manufacturing facility and a method for controlling the same that can effectively prevent fracture of an electrode substrate. Background Technology

[0002] In a secondary battery, the electrode plate is formed by coating a slurry containing an electrode active material onto the surface of an electrode current collector made of a metal foil or a metal mesh. Typically, the substrate is referred to as the base material before coating and as the electrode base material after coating, and the slurry is formed by mixing a solvent, a plasticizer, an electrode active material, and a binder.

[0003] The substrate is divided into an anode substrate and a cathode substrate, and although the material of the metal foil and the material of the slurry differ for each, they are manufactured by spraying and coating the slurry. Therefore, although the slurry coating devices for manufacturing the anode substrate and the cathode substrate are separate from each other, the slurry coating mechanism may be the same.

[0004] If the process for manufacturing an electrode is referred to as an electrode process, specifically, the electrode process may include a coater process or a rolling process for coating a slurry onto an electrode substrate.

[0005] For example, the coater or rolling process can be performed as a roll-to-roll continuous process to increase process efficiency. That is, coating or rolling is performed while the electrode substrate is continuously transported.

[0006] Breakage of the electrode substrate may occur during the electrode process. When breakage occurs, the equipment stops, and a significant amount of time is required to reconnect the substrate. In other words, downtime loss is inevitable. Therefore, preventing substrate breakage is very important.

[0007] Figure 1 schematically illustrates the configuration of a coating facility for performing a coating process for an electrode for a secondary battery.

[0008] Referring to FIG. 1, the coating facility (100) may include an unwinder (110), a rewinder (120), a plurality of transfer rolls (101), and a coater device (140). The plurality of transfer rolls (101) may be arranged between the unwinder (110) and the rewinder (120) to guide the movement of the electrode (10).

[0009] Here, the electrode (10) may be an electrode substrate before slurry coating is performed before the coater device (140), and may be an electrode substrate after slurry coating is performed after the coater device (140).

[0010] The electrode (10) is driven roll-to-roll along a plurality of transfer rolls (130) from an unwinder (110) toward a rewinder (120), and the process is performed so that it is wound onto the rewinder (120).

[0011] As described, a tension cut section (TC) is set in the electrode equipment (100), and multiple tension cut sections may be set in a single electrode equipment (100). A tension cut section can be described as a section where individual tension control is performed.

[0012] The tension cut section (TC) is defined by a drive roll (130) and a tension meter (130). For example, the section between drive rolls is set as the tension cut section, and tension control can be performed individually for each tension cut section.

[0013] The electrode equipment generally moves the electrode substrate by operating the drive roll (130) with tension control. It is common practice to perform PI control, which detects tension fluctuations through the tension meter (130) in the tension cut section (TC) and compensates for tension fluctuations by increasing or decreasing the rotation speed of the drive roll (140) when tension fluctuations occur.

[0014] Figure 2 illustrates a graph of control data at the point of disconnection. As time progresses, minute fluctuations occur in the speed line (DS) of the drive roll and the speed line (LS) of the material, and tension hunting occurs in the torque line (T) of the drive roll starting from point A. To compensate for the tension hunting, the load on the drive roll increases, and tension increases at point B, eventually leading to a disconnection at point C.

[0015] In electrode processes using roll-to-roll, it is common practice to utilize the tension of the substrate to prevent substrate breakage. That is, the tension applied to the substrate is detected, and light and heavy alarms are generated based on the detected tension. For example, if the detected tension exceeds a small range, a light alarm is generated to draw attention, and if the detected tension exceeds a large range, a heavy alarm is generated to stop the equipment. In other words, an alarm is generated using tension hunting, where the tension increases rapidly, to detect a break in the wire in advance.

[0016] There are limitations to detecting a broken wire in advance through such minor / medium alarms. In addition, minor / medium alarms are triggered even when no broken wire occurs. Therefore, there are certain limitations to detecting a broken wire in advance using tension hunting.

[0017] Therefore, it is necessary to provide an electrode manufacturing facility and a control method thereof that can detect a breakage of the substrate in advance and prevent the breakage of the substrate in advance. The problem to be solved

[0018] The present invention aims to solve the problems of conventional electrode equipment and control methods.

[0019] In one embodiment of the present invention, the tension cut loss is to be significantly reduced by using the torque change rate as the factor for performing tension cut prevention control.

[0020] Through one embodiment of the present invention, we aim to provide an electrode equipment and a control method thereof that can prevent tension cut by preventing a rapid change in torque before tension cut occurs, thereby minimizing stress on the electrode substrate and consequently preventing tension cut.

[0021] Through one embodiment of the present invention, we aim to provide an electrode equipment and a control method thereof that can effectively prevent frequent equipment stoppages to prevent tension cut and block the occurrence of tension cut before it actually occurs. means of solving the problem

[0022] In order to achieve the aforementioned purpose, according to one embodiment of the present invention, a method for controlling an electrode equipment that performs an electrode process on an electrode substrate in a roll-to-roll continuous process may be provided, comprising: a driving step of driving a driving roll to transport an electrode substrate; a tension control step of detecting tension applied to the electrode substrate through a tension meter and controlling the tension applied to the electrode substrate by adjusting the speed of the driving roll based on the detected tension; and a tension cut prevention step of calculating a torque change rate of the driving roll and stopping the driving of the coater equipment when the calculated torque change rate exceeds a threshold value.

[0023] It is preferable that the torque change rate of the above-mentioned drive roll is the slope of the torque of the above-mentioned drive roll. More specifically, it is preferable that the torque change rate of the above-mentioned drive roll is the torque change rate of the drive motor of the above-mentioned drive roll.

[0024] It is preferable to calculate the above torque change rate by calculating the amount of torque change over one second from the torque stored at 0.1-second intervals. More specifically, the torque change rate is calculated at 0.1-second intervals, and it is preferable that the torque change rate be calculated using the torque over one second.

[0025] The tension cut prevention step may include: a step of detecting the torque of the drive roll; a step of storing the torque of the drive roll at a first time interval; a step of calculating the torque change rate of the drive roll based on the torque value accumulated during a second time period; and a comparison step of comparing the torque change rate calculated by the above calculation with the threshold value.

[0026] The first time may be shorter than the second time. Specifically, the first time may be 0.1 seconds and the second time may be 1 second. Torque is stored at intervals of 0.1 seconds, and the rate of change in torque can be calculated through the torques stored during the last 1 second. The rate of change in torque can be calculated at intervals of 0.1 seconds.

[0027] It is preferable that the step of detecting the torque of the drive roll be performed after the acceleration section following the start of the drive roll. That is, it is preferable that the tension cut prevention step be excluded until stable transfer is performed after the electrode transfer of the electrode substrate begins.

[0028] It is preferable that the above tension control step be performed independently of the above tension cut prevention step until the operation of the above electrode equipment is stopped.

[0029] The above electrode process is a coater process for manufacturing an electrode by applying an active material to a transported electrode substrate, and the above electrode equipment may be a coater equipment.

[0030] In order to achieve the aforementioned purpose, according to one embodiment of the present invention, a control method for an electrode equipment that performs an electrode process on an electrode substrate in a roll-to-roll continuous process may be provided, comprising: a driving step of driving a driving roll to transport an electrode substrate; and a tension cut prevention step of calculating a torque change rate of the driving roll and stopping the driving of the coater equipment when the calculated torque change rate exceeds a threshold value.

[0031] According to the present embodiment, the tension cut prevention step is preferably performed based on the rate of change of torque applied to the driving roll, rather than based on the tension of the electrode substrate.

[0032] If excessive tension is applied to the electrode substrate, tension cut inevitably occurs due to the material characteristics of the electrode substrate. Therefore, tension cut is generally prevented by stopping the transfer of the electrode substrate when the tension exceeds a preset value. The preset tension value can be set considering the margin.

[0033] However, through tension control, even if the tension exceeds a preset tension value, the tension can be reduced again. Therefore, in reality, a tension cut may not occur. This means that frequent equipment stoppages occur due to tension-based tension cut prevention.

[0034] On the other hand, the occurrence of meaningless equipment shutdowns can be minimized through tension cut prevention based on the rate of change in torque. In other words, equipment shutdown can be performed before tension cut actually occurs. Through this, tension cut losses and line losses due to equipment shutdown can be minimized.

[0035] In order to achieve the aforementioned purpose, according to one embodiment of the present invention, an electrode equipment may be provided comprising: an unwinder; a rewinder provided at the rear of the unwinder for winding an electrode substrate supplied from the unwinder; a drive roll provided between the unwinder and the rewinder for providing tension to the electrode substrate to transport the electrode substrate; and a controller that calculates the torque change rate of the drive roll and stops the operation of the coater equipment when the calculated torque change rate exceeds a threshold value.

[0036] The above controller can be implemented through a PLC (programmable logic controller).

[0037] The above electrode equipment may be equipment for manufacturing electrodes for secondary batteries. Specifically, the above electrode equipment may be a coater equipment that manufactures electrodes by applying an active material to a conveyed electrode substrate.

[0038] The above controller can calculate the torque change rate during the second time interval at the first time interval.

[0039] The first time mentioned above may be 0.1 seconds and the second time mentioned above may be 1 second.

[0040] It is preferable that the above controller stops the operation of the electrode equipment when the torque change rate exceeds a threshold value.

[0041] Specifically, the torque may be the torque of the drive motor driving the drive roll. Furthermore, the RPM of the drive roll can be controlled by controlling the RPM of the drive motor. A change in the torque of the drive motor may imply a change in the load of the drive roll.

[0042] The above electrode equipment is equipped with a plurality of drive rolls, and the section between the drive rolls can be set as a tension cut section in which the tension of the electrode substrate is individually controlled. Accordingly, a plurality of tension cut sections can be set in the electrode equipment.

[0043] The above electrode equipment may have a very long length between the unwinder and the rewinder, that is, the length over which the electrode material is continuously transported. Therefore, it is desirable to divide the equipment into multiple tension cut sections and perform tension control and tension cut prevention control individually for each tension cut section.

[0044] The above controller can control the tension of the electrode substrate by increasing or decreasing the rotational speed of the drive roll located at the rear of the tension cut section. Here, the unwinder side can be referred to as the front and the rewinder side as the rear.

[0045] A tension meter for detecting the tension of the electrode substrate may be provided in front of the drive roller located at the rear of the tension cut section. The tension meter may be provided at each tension cut section.

[0046] It is preferable that the above controller controls the tension by controlling the rotational speed of the drive roll based on the tension detected by the tension meter.

[0047] Accordingly, according to the present embodiment, tension cut prevention can be controlled by controlling the transfer speed and tension of the electrode substrate and simultaneously calculating the rate of change of driving torque. It can be confirmed that the rate of change of torque is substantially more closely related to the occurrence of tension cut, and through tension cut prevention through this, it can be confirmed that tension cut loss can be reduced by approximately 30% compared to conventional methods. Effects of the invention

[0048] In one embodiment of the present invention, tension cut loss can be significantly reduced by using the torque change rate as the factor for performing tension cut prevention control.

[0049] Through one embodiment of the present invention, an electrode device and a control method thereof can be provided that prevent a rapid change in torque before tension cut occurs, thereby minimizing stress on the electrode substrate and consequently preventing tension cut.

[0050] Through one embodiment of the present invention, an electrode equipment and a control method thereof can be provided to effectively prevent frequent equipment stoppages for preventing tension cut and to block the occurrence of actual tension cut before it occurs. Brief explanation of the drawing

[0051] FIG. 1 is a simplified configuration diagram of an electrode system applicable to a conventional or an embodiment of the present invention, and Figure 2 is a data graph for tension, drive roll speed, electrode substrate movement speed, and tension cut time, and FIG. 3 is a control block diagram of an electrode facility according to an embodiment of the present invention, and Figure 4 is a data graph for tension, drive roll speed, electrode substrate movement speed, torque change rate, and tension cut time, and FIG. 5 is an example of control logic according to an embodiment of the present invention, and FIG. 6 is an example of tension cut control logic according to an embodiment of the present invention, and FIG. 7 is a graph for comparing the efficiency of a conventional tension cut blocker and a tension cut blocker according to an embodiment of the present invention. Specific details for implementing the invention

[0052] Hereinafter, an electrode facility and a control method thereof according to an embodiment of the present invention will be described in detail with reference to the attached drawings.

[0053] As described above, tension control is performed in the electrode equipment to control the tension applied to the electrode substrate by adjusting the speed of the drive roller. Nevertheless, tension hunting occurs, and as a result, excessive tension is applied to the electrode substrate, which can be seen to cause tension cut, i.e., breakage of the electrode substrate.

[0054] To prevent tension cut, the equipment is stopped when a major alarm occurs. The major alarm is triggered when the measured tension exceeds a set value, which is intended to prevent the occurrence of a tension cut in advance. The problem is that the high frequency of major alarms leads to a decrease in production rate due to frequent equipment stoppages.

[0055] The inventors examined the relationship between the occurrence of a heavy alarm and the actual tension cut. This is because, when a heavy alarm occurs, a tension cut may inevitably not occur if the actual equipment stoppage is not performed. This is because, if the equipment stoppage is not performed after the heavy alarm occurs, tension control is still performed. In other words, when a tension fluctuation occurs, the speed of the drive roll is increased or decreased to compensate for the tension fluctuation. Consequently, it was confirmed that a tension cut does not necessarily occur when a heavy alarm occurs.

[0056] Accordingly, the inventors noted that there may be factors substantially related to the occurrence of tension cut.

[0057] Figure 3 illustrates a graph of control data at the point of disconnection. It can be described as a graph in which the torque change rate line (TD) is further added to the graph shown in Figure 2.

[0058] The torque change rate refers to the rate at which the torque of the motor driving the drive roll changes per unit time, and can be described as the percentage of torque value that varies per second.

[0059] The inventors were able to confirm that when tension hunting occurs from point A and actual tension cut occurs at point C, the rate of change of torque increases rapidly from point D, which corresponds to point A. In other words, a tendency for the torque slope to increase rapidly was confirmed, and subsequently, it was confirmed that tension cut inevitably occurs.

[0060] For example, when the torque gradient increases rapidly, a pattern of wire breakage occurs, and on average, it was observed that the torque gradient tends to increase rapidly about 4 to 5 seconds before the tension cut occurs.

[0061] The configuration that increases or decreases tension on the electrode substrate, i.e., the position of the drive roller, the configuration that detects tension, i.e., the position of the tension meter, and the location where the actual tension cut occurs in the tension cut section are different. Therefore, even if the tension increases or decreases, a delay time in which the increased or decreased tension is reflected throughout the entire tension cut section is inevitable. Consequently, the accuracy of a tension-based tension cut prevention algorithm is bound to be low.

[0062] On the other hand, when tension cut prevention is performed based on the rate of change in torque that inevitably occurs during the tension control process, it can be confirmed that tension cut is very accurately preemptively blocked. The inventors were able to confirm that in pilot lines and mass production lines, a sudden change in torque gradient inevitably occurs approximately 4 to 5 seconds before a wire break occurs. In other words, if a sudden change in torque gradient occurs, it can be said that a wire break inevitably occurs approximately 4 to 5 seconds later.

[0063] Accordingly, when the rate of change in torque, i.e., the torque slope, exceeds a certain threshold value before tension cut occurs, the equipment is stopped in advance to reorganize the equipment and restart the line, thereby significantly reducing losses due to tension cut and losses due to non-operation.

[0064] According to one embodiment of the present invention, more effective tension cut prevention can be achieved by using the configurations of conventional electrode substrate equipment as they are. In other words, effective tension cut prevention can be achieved by changing or adding a control algorithm while using the conventional configurations as they are.

[0065] Hereinafter, with reference to FIGS. 4 to 6, the control configuration and control logic of an electrode facility according to an embodiment of the present invention will be described in detail.

[0066] Figure 4 shows a block diagram of the control configuration of the electrode equipment, Figure 5 shows the control logic of the electrode equipment, and Figure 6 shows the detailed control logic for preventing disconnection.

[0067] As shown in FIG. 4, the operation control of the electrode substrate equipment is performed by a controller (160), and the controller (160) may be provided in the form of a PLC. The tension value applied to the electrode substrate in real time is detected through the tension meter (140), and the controller (160) uses this to perform tension control.

[0068] That is, the controller (160) controls the driving of the motor (130a) of the drive roll (130) based on the tension value. In other words, the motor's RPM is controlled to compensate for the movement speed and tension fluctuation of the electrode substrate.

[0069] The drive roll (130) is driven to transport the electrode substrate through the control of the controller (160). That is, the driving step (S10) of the drive roll (130) is performed, and the electrode process can be performed as the electrode substrate is transported.

[0070] As the electrode process is performed, the drive of the drive roll is controlled at each tension cut section, and a tension cut prevention control step (S30) may be performed during the tension control step (S20). In detail, the tension control step involves tension detection (S21) through a tension meter (140), and speed control (S22) of the drive roll is performed based on the detected tension. That is, tension compensation according to the increase or decrease in tension can be performed through the speed control of the drive roll. At this time, tension-based PI control may be performed. Here, the unit of tension may be N, the unit of speed of the drive roll may be RPM, and the transfer speed of the electrode substrate may be MPM (meter per minute).

[0071] Conventionally, it can be said that tension cut prevention control was performed during the tension control stage. That is, if the tension measured during the tension control stage exceeded the set range, an alarm was triggered and the equipment was temporarily stopped. In other words, due to the temporary stop (interlock) of the equipment, the tension control stage is no longer performed.

[0072] In this embodiment, tension cut prevention control (S30) can be performed in parallel with the tension control step. In this embodiment, not only the speed of the drive roll motor (130a) but also the torque can be fed back. Torque values ​​can be fed back and stored in real time, and the torque gradient can be calculated through the stored torque values. The unit of the torque gradient or torque change rate can be % / sec, that is, the percentage of torque change per second.

[0073] More specifically, torque detection (S31) is performed and the torque value is stored in real time (S32). For example, the torque value can be measured and stored at intervals of 0.1 seconds. Accordingly, the rate of change of the torque value over the last 1 second from the current point in time can be calculated or computed in real time (S34).

[0074] The tension cut prevention control (S30) in this embodiment may also include a temporary stop of the equipment, i.e., a stop of operation (S35). However, the stop of operation in this embodiment may be based on the amount of excess torque change rather than the excess tension. In other words, even if excess tension occurs, the stop of operation of the equipment may not be performed, and the tension control step may still be performed. However, the operation of the equipment may be stopped (S35) after an alarm is triggered only when the amount of torque change exceeds the set range.

[0075] Accordingly, in this embodiment, a step (S34) of comparing the torque change amount per second and the threshold value in real time can be performed.

[0076] When the torque change amount per second is below a threshold value, the driving step (S10) is continued, and thus the tension control step (S20) can be continued. Of course, the tension cut prevention control step (S30) is also continued, but the operation of the equipment is not stopped.

[0077] If the change in torque per second exceeds a threshold value, driving stop (S35) may be performed. After stopping the operation of the equipment, the electrode material is re-established and the equipment is restarted, thereby reducing wire breakage loss and non-operation loss.

[0078] Below, with reference to FIG. 7, the efficiency of a conventional tension-based tension cut (break) prevention logic and a torque conversion rate-based tension cut (break) prevention logic according to the present embodiment will be compared.

[0079] The horizontal axis is the time axis, and the time unit can be 0.1 seconds. The vertical axis represents the magnitude of line speed (meter per minute), torque (%), and torque change rate (% per minute).

[0080] In this graph, it was observed that although the conventional tension-based alarm, namely the tension cut alarm (TA), occurred three times in a row, the tension cut did not occur unless the equipment operation was forcibly stopped. Additionally, it was observed that the tension cut occurred approximately 50 seconds after the fourth tension cut alarm. Therefore, it can be seen that if the equipment operation is stopped every time a tension cut alarm occurs due to excessive occurrence of tension cut alarms, the loss becomes relatively large.

[0081] On the other hand, it was found that a wire breakage pre-detection (F) according to the present embodiment occurred approximately 45 seconds after the 4th tension cut alarm occurred, and a wire breakage (G) occurred approximately 4 seconds later. That is, it can be seen that a wire breakage occurs after a short period of time has elapsed after the pre-detection. Of course, it can be seen that a short period of time is sufficient to prevent the occurrence of a wire breakage in advance by stopping the operation of the equipment.

[0082] Ultimately, compared to the case of a conventional tension cut alarm, according to the present embodiment, it is possible to accurately detect the actual disconnection before it occurs, and also to detect the disconnection in advance in a relatively short period of time.

[0083] The inventors were able to verify the time taken between the torque change rate-based tension cut alarm and the actual wire breakage in various equipment lines. In a total of eight mass production lines and pilot lines, the detection times before wire breakage were confirmed to be 3.7 seconds, 13 seconds, 2.6 seconds, 4 seconds, 4.3 seconds, 3.8 seconds, 3.8 seconds, and 4.7 seconds, respectively, and it was confirmed that the actual wire breakage occurred after an average of approximately 4.89 seconds.

[0084] Therefore, by detecting open circuits and providing pre-alarms based on the torque change rate (torque gradient), open circuits can be prevented with high accuracy, ultimately increasing line operating time and thereby boosting productivity efficiency.

[0085] Meanwhile, the threshold value of the torque change rate at which a wire breakage pre-alarm is triggered will require custom setting because the specifications of the electrode material differ by production model. Explanation of the symbols

[0086] 10 : Electrode substrate 100 : Electrode equipment 110 : Unwinder 120 : Rewinder 130 : Drive Roll 140 : Tension meter 150 : Process equipment

Claims

Claim 1 A control method for electrode equipment that performs an electrode process on an electrode substrate in a roll-to-roll continuous process, comprising: a driving step of driving a driving roll to transport the electrode substrate; a tension control step of detecting tension applied to the electrode substrate through a tension meter and controlling the tension applied to the electrode substrate by adjusting the speed of the driving roll based on the detected tension; and a tension cut prevention step of calculating the torque change rate of the driving roll and stopping the driving of the coater equipment when the calculated torque change rate exceeds a threshold value. Claim 2 A control method for an electrode facility according to claim 1, wherein the rate of change of torque of the driving roll is the slope of the driving roll torque. Claim 3 A control method for electrode equipment according to claim 2, characterized in that the torque change rate is calculated by calculating the torque change amount over 1 second from the torque stored at 0.1-second intervals. Claim 4 A control method for an electrode facility according to claim 1, wherein the tension cut prevention step comprises: a step of detecting the torque of the driving roll; a step of storing the torque of the driving roll at a first time interval; a step of calculating the torque change rate of the driving roll based on the torque value accumulated during a second time period; and a comparison step of comparing the torque change rate calculated by the above calculation with the threshold value. Claim 5 A control method for an electrode facility according to claim 4, characterized in that the step of detecting the torque of the drive roll is performed after the acceleration section following the start of driving of the drive roll. Claim 6 A method for controlling an electrode facility according to claim 4, characterized in that the tension control step is performed independently of the tension cut prevention step until the operation of the electrode facility is stopped. Claim 7 A method for controlling electrode equipment according to claim 1, wherein the electrode process is a coater process for manufacturing an electrode by applying an active material to a conveyed electrode substrate, and the electrode equipment is a coater equipment. Claim 8 An electrode facility comprising: an unwinder; a rewinder provided at the rear of the unwinder for winding an electrode substrate supplied from the unwinder; a drive roll provided between the unwinder and the rewinder for providing tension to the electrode substrate to transport the electrode substrate; and a controller that calculates the torque change rate of the drive roll and stops the operation of the coater facility when the calculated torque change rate exceeds a threshold value. Claim 9 In claim 8, the electrode equipment is characterized as being a coater equipment that manufactures an electrode by applying an active material to a conveyed electrode substrate. Claim 10 In claim 8, the electrode equipment is characterized in that the controller calculates the torque change rate during the second time interval at the first time interval. Claim 11 An electrode facility according to claim 10, characterized in that the first time is 0.1 seconds and the second time is 1 second. Claim 12 In claim 10, the electrode equipment is characterized in that the controller stops the operation of the electrode equipment when the torque change rate exceeds a threshold value. Claim 13 An electrode facility according to claim 10, characterized in that the above electrode facility is equipped with a plurality of drive rolls, and the section between the drive rolls is set as a tension cut section in which the tension of the electrode substrate is individually controlled. Claim 14 An electrode facility according to claim 13, characterized in that the controller controls the tension of the electrode substrate by increasing or decreasing the rotational speed of a drive roll located behind the tension cut section. Claim 15 An electrode facility according to claim 14, wherein a tension meter for detecting the tension of the electrode substrate is provided in front of a drive roll located at the rear of the tension cut section, and the controller controls the tension by controlling the rotational speed of the drive roll based on the tension detected by the tension meter. Claim 16 A control method for electrode equipment that performs an electrode process on an electrode substrate in a roll-to-roll continuous process, comprising: a driving step of driving a driving roll to transport the electrode substrate; and a tension cut prevention step of calculating a torque change rate of the driving roll and stopping the driving of the coater equipment when the calculated torque change rate exceeds a threshold value. Claim 17 A control method for an electrode facility according to claim 16, characterized in that the rate of change of torque of the driving roll is the slope of the driving roll torque. Claim 18 A control method for electrode equipment according to claim 17, characterized in that the torque change rate is calculated by calculating the torque change amount over 1 second from the torque stored at 0.1-second intervals. Claim 19 A control method for an electrode facility according to claim 16, wherein the tension cut prevention step comprises: a step of detecting the torque of the driving roll; a step of storing the torque of the driving roll at a first time interval; a step of calculating the torque change rate of the driving roll based on the torque value accumulated during a second time period; and a comparison step of comparing the torque change rate calculated by the above calculation with the threshold value. Claim 20 A control method for an electrode facility according to claim 19, characterized in that the step of detecting the torque of the drive roll is performed after the acceleration section following the start of driving of the drive roll.

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