KR20230140784A - Laminating device and controlling method thereof - Google Patents

Abstract

The present invention discloses a laminating device and a control method thereof. The laminating device of the present invention includes an electrode loader that supplies an electrode sheet forward; An actuator located ahead of the electrode loader to correct the moving direction of the electrode sheet; A laminator that laminates the cut electrodes on a separator sheet after passing through the actuator in front of the actuator; And an inspection device for inspecting the position of the electrodes laminated in the laminator; wherein the actuator corrects the moving direction of the electrode sheet based on the position correction information of the electrode generated as a result of the inspection in the inspection device, and the correction value of the actuator is preset. If it exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position of the electrode sheet.

Description

Laminating device and its control method {LAMINATING DEVICE AND CONTROLLING METHOD THEREOF}

The present invention relates to a laminating device and a control method thereof. More specifically, in the lamination process, a laminating method that corrects the distortion of the electrode sheet in the section before joining the separator sheet and the electrode and ensures that the electrode sheet and the separator sheet are aligned in the correct position. It relates to devices and their control methods.

Generally, secondary batteries include an anode, a cathode, and an electrolyte, and generate electrical energy using a chemical reaction. The use of secondary batteries is gradually increasing due to the advantage of being able to charge and discharge. Among such secondary batteries, lithium secondary batteries have a high energy density per unit weight, so they are widely used as a power source for electronic communication devices or as a driving source for high-output hybrid vehicles and electric vehicles.

In terms of the shape of these secondary batteries, demand is increasing for prismatic secondary batteries and pouch-shaped secondary batteries that can be applied to products such as mobile phones due to their thin thickness. In terms of secondary battery materials, demand for lithium secondary batteries such as lithium-ion batteries and lithium-ion polymer batteries with high energy density, discharge voltage, and output stability is increasing.

The electrode sheet is supplied to the notching module, and the notching module forms electrode tabs with the same gap on one side of the electrode sheet in the width direction. The electrode sheet on which the electrode tabs are formed is wound again on the rewinder.

The electrode sheet roll wound on the rewinder is loaded into the electrode loader. The electrode loader sequentially supplies the electrode sheet wound on the electrode sheet roll to the actuator and the laminator. The laminator cuts the electrode sheet to form an electrode, and stacks the electrode and the separator to form an electrode laminate. An inspection device is installed on the downstream side of the laminator to inspect the electrode stack. The inspection device inspects the position of the electrode bonded to the separator sheet.

When the electrode sheet is transported between the electrode loader and the laminator, if the electrode sheet is meandered or twisted in the width direction, the electrode cut in the laminator may be attached to the separator sheet in a twisted state. To solve this problem, an actuator disposed between the electrode loader and the laminator is driven to correct the meandering or distortion of the electrode sheet.

However, conventionally, when the electrode loader is fixed in position and only the actuator is moved to correct the meandering or distortion of the electrode sheet, the operating load of the actuator significantly increases as the meandering or distortion of the electrode sheet increases. In addition, when the actuator suddenly corrects the electrode sheet in the width direction, hunting, where the electrode sheet is bent in the width direction, or meandering or twisting in some sections of the electrode sheet often increases temporarily. If hunting, meandering, or distortion of the electrode sheet occurs, it becomes difficult to accurately match the electrode sheet and the separator sheet in the laminator, and it becomes difficult to maintain uniform quality of the unit electrode.

The background technology of the present invention is disclosed in Republic of Korea Patent Publication No. 2020-0137186 (published on December 9, 2020, title of invention: basic unit, lamination device and method for secondary batteries).

The present invention was devised to solve the above-mentioned problems, and provides a laminating device that corrects the distortion of the electrode sheet in the section before joining the separator sheet and the electrode in the lamination process and ensures that the electrode sheet and the separator sheet are aligned in the correct position, and the same. The purpose is to provide a control method.

In order to solve the above-described problem, the laminating device of the present invention includes an electrode loader that supplies an electrode sheet forward; An actuator located ahead of the electrode loader to correct the moving direction of the electrode sheet; A laminator in front of the actuator that laminates the cut electrodes on a separator sheet after passing through the actuator; And an inspection device for inspecting the position of the electrodes laminated in the laminator, wherein the actuator corrects the moving direction of the electrode sheet based on the position correction information of the electrode generated as a result of the inspection in the inspection device, and the correction value of the actuator If the preset reference correction range is exceeded, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position of the electrode sheet.

It may further include a spool sensor disposed in front of the electrode loader between the electrode loader and the actuator to detect the width direction position of the electrode sheet.

The electrode loader is aligned by moving in a direction corresponding to the width direction of the electrode sheet in order to match the width direction position of the electrode sheet detected by the spool sensor to a predetermined position, and the spool sensor is aligned in the width direction of the electrode sheet. It can be installed movably.

When the correction value of the actuator exceeds the standard correction range, the spool sensor is moved in a direction corresponding to the width direction of the electrode sheet, and the electrode loader is moved in the width direction of the electrode sheet to correspond to the movement distance of the spool sensor. can be moved to

When the correction value of the actuator exceeds the standard correction range, the electrode loader may be moved to match the width-direction center value of the correction position of the spool sensor.

It may further include a main sensor disposed in front of the actuator between the actuator and the laminator to detect the width direction position of the electrode sheet supplied forward past the actuator.

The main sensor may be installed to be movable in the width direction of the electrode sheet.

The actuator may correct the moving direction of the electrode sheet in order to match the width direction position of the electrode sheet detected by the main sensor to a predetermined position.

By moving the main sensor in a direction corresponding to the width direction of the electrode sheet based on the electrode position correction information generated as a result of the inspection in the inspection device, the actuator corrects the moving direction of the electrode sheet.

When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, so that the correction value of the actuator exceeds the standard correction range. You can avoid doing it.

When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the actuator may be position corrected to match the width direction center value of the correction position of the main sensor.

The spool sensor may be an edge position controller (EPC) sensor.

The main sensor may be an edge position controller (EPC) sensor.

After the correction value of the actuator exceeds the standard correction range and the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, it can be confirmed whether the correction value of the actuator has been reduced to fall within the standard correction range. there is.

The control method of the laminating device according to the present invention includes: supplying an electrode sheet to an actuator and a laminator by an electrode loader; inspecting the position of the electrode in an inspection device disposed on the front side of the laminator; Compensating the moving direction of the electrode sheet by the actuator based on the position correction information of the electrode generated as a result of the inspection in the inspection device; And when the correction value of the actuator exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position of the electrode sheet.

When the correction value of the actuator exceeds the standard correction range, the spool sensor is moved in a direction corresponding to the width direction of the electrode sheet, and the electrode loader is moved in the width direction of the electrode sheet to correspond to the movement distance of the spool sensor. can be moved

The electrode loader may be moved to match the width direction center value of the correction position of the spool sensor.

When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, so that the correction value of the actuator exceeds the standard correction range. You can avoid doing it.

When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the set distance, the actuator may be position corrected to match the width direction center value of the correction position of the main sensor.

After the correction value of the actuator exceeds the standard correction range and the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, it can be confirmed whether the correction value of the actuator has been reduced to fall within the standard correction range. there is.

According to the present invention, when the correction value of the actuator is small, only the actuator is moved to finely correct the moving direction of the electrode sheet, and when the actuator's correction value is excessive, the actuator and the electrode loader are moved in the same direction to move the electrode sheet. The direction is drastically corrected.

According to the present invention, the driving load of the actuator can be significantly reduced when correcting the width direction position of the electrode sheet. Furthermore, even if the electrode sheet is rapidly adjusted in the width direction, the actuator and electrode loader are adjusted to match the moving direction of the electrode sheet, preventing hunting and meandering phenomena from temporarily increasing in some sections of the electrode sheet. You can.

According to the present invention, the spool sensor and electrode loader are moved at a constant proportional value in response to the correction value of the actuator, so when correcting the width direction position of the electrode sheet, the actuator, spool sensor, and electrode loader are aligned with the moving direction of the electrode sheet. It can be placed in a location. As a result, when correcting the position of the electrode sheet, the driving load of the actuator can be reduced and hunting and meandering phenomena can be prevented from temporarily increasing in some sections of the electrode sheet.

According to the present invention, the width direction position of the electrode sheet is corrected while the electrode loader and the actuator are moved in the same direction, so that the slip phenomenon of the electrode sheet in the actuator can be prevented as the overall moving direction of the electrode sheet is changed.

In addition to the above-described effects, specific effects of the present invention are described below while explaining specific details for carrying out the invention.

1 is a diagram schematically showing a laminating device according to the present invention.
Figure 2 is a diagram schematically showing a state in which the position of the electrode sheet in the width direction is not corrected in the laminating device of Figure 1.
Figure 3 is a diagram schematically showing a state in which the position of the electrode sheet is corrected in the width direction in the laminating device of Figure 1.
Figure 4 is a flow chart schematically showing a laminating device according to the present invention.

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

The present invention is not limited to the embodiments disclosed below, but may be subject to various changes and may be implemented in various different forms. This example is provided solely to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention. Therefore, the present invention is not limited to the embodiments disclosed below, but substitutes or adds to the configuration of one embodiment and the configuration of another embodiment, as well as all changes and equivalents included in the technical spirit and scope of the present invention. It should be understood to include substitutes.

The attached drawings are only for easy understanding of the embodiments disclosed in the present specification, and the technical idea disclosed in the present specification is not limited by the attached drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are not limited to the attached drawings. It should be understood to include water or substitutes. In the drawings, components may be expressed exaggeratedly large or small in size or thickness for convenience of understanding, etc., but the scope of protection of the present invention should not be construed as limited due to this.

The terms used in this specification are only used to describe specific implementations or examples, and are not intended to limit the invention. And singular expressions include plural expressions, unless the context clearly dictates otherwise. In the specification, terms such as ~include, ~consist of, etc. are intended to indicate the existence of features, numbers, steps, operations, components, parts, or a combination thereof described in the specification. In other words, terms such as ~include, ~consist, etc. in the specification. It should be understood that this does not exclude in advance the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

When a component is referred to as being "on top" or "below" another component, it should be understood that not only is it placed directly on top of the other component, but there may also be other components in between. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, a laminating device according to an embodiment of the present invention will be described.

Figure 1 is a diagram schematically showing a laminating device according to the present invention, Figure 2 is a diagram schematically showing a state in which the position of the electrode sheet is not corrected in the width direction in the laminating device of Figure 1, and Figure 3 is a diagram schematically showing a state in which the position of the electrode sheet is not corrected in the width direction in the laminating device of Figure 1. This is a diagram schematically showing the state in which the position of the electrode sheet is corrected in the width direction in the laminating device.

1 to 3, the laminating device 100 according to an embodiment of the present invention includes an electrode loader 110, an actuator 140, a laminator 160, and an inspection device 170.

In the electrode loader 110, the electrode sheet 10 on which electrode tabs are formed in a notching module (not shown) is wound in the form of a roll sheet in a rewinder (not shown). At this time, the electrode tabs are formed at equal intervals on one side of the electrode sheet 10 in the width direction. The electrode roll wound on the rewinder is loaded into the electrode loader 110. In the present invention, two or more electrode loaders 110 supply two or more electrode sheets 10, but for convenience of understanding, in FIG. 1, one electrode loader 110 supplies one electrode sheet 10. The configuration is shown.

A splicer 120 and an actuator 140 are sequentially disposed on the front side of the electrode loader 110. The electrode sheet 10 released from the electrode loader 110 passes through the splicer 130 and is then supplied to the actuator 140. In the present invention, the front side refers to the direction in which the electrode sheet 10 or the separator sheet 20 is discharged from the corresponding component (left side of the corresponding component in FIG. 1).

The actuator 140 generates a driving force to transport the electrode sheet 10. The actuator 140 corrects the moving direction of the electrode sheet 10. That is, the actuator 140 moves in the width direction to correct the meandering or distortion of the electrode sheet 10 in the width direction.

A laminator 160 is installed on the front side of the actuator 140. The laminator 160 passes through the actuator 140 in front of the actuator 140 and then laminates the cut electrodes 11 on the separator sheet 20. The separator sheet 20 is supplied to the laminator 160 by a separator 21 separator feeder (not shown). The laminator 160 stacks the cut electrodes 11 on the separator sheet 20 at equal intervals and then heats them at high temperature and pressure to join the separator sheet 20 and the electrodes 11.

The laminator 160 includes an electrode cutter portion 161 disposed on the front side of the actuator 140, a laminating module 163 disposed on the front side of the electrode cutter portion 161, and a front side of the laminating module 163. It includes a separator cutter unit 165 disposed in. When the electrode cutter unit 161 cuts the electrode 11 from the electrode sheet 10, the cut electrode 11 is stacked on the separator sheet 20. When an electrode stack (not shown) in which the separator sheet 20 and the electrode 11 are laminated is supplied to the laminating module 163, the laminating module 163 heats and pressurizes the electrode stack to form the separator sheet 20 and the electrode stack. The electrodes 11 are aligned. The separator cutter unit 165 forms an electrode cell C by cutting between the electrodes 11 in the separator sheet 20 of the electrode stack discharged from the laminating module 163. The electrode cell (C) consists of a cut separator (21) and an electrode (11).

The electrode cell (C) may be one of mono-cell, bi-cell, or full cell. A monocell refers to a cell with a structure in which an electrode 11 is placed on one side of the outermost side of the unit cell, and a separator 21 is placed on the other side of the outermost side. A bicell refers to a cell with a structure in which electrodes 11 of the same polarity are disposed on both outermost sides of a unit cell. A full cell refers to a cell with a structure in which electrodes 11 of opposite polarity are disposed on both outermost sides of the unit cell.

The inspection device 170 inspects the position of the electrodes 11 stacked in the laminator 160. The inspection device 170 may be placed on the front side of the laminator 160 (the discharge side of the separator cutter unit 165). The inspection device 170 provides a vision unit that measures the position of the electrode 11 by irradiating light. Since the inspection device 170 inspects the position of the electrode 11 in the electrode cell C, it can be determined whether the electrode 11 is distorted or positionally biased in the separator 21. If the electrode sheet 10 is transported in a meandering or twisted state, the electrodes 11 cut by the electrode cutter unit 161 are biased at a predetermined distance to one side of the separator sheet 20 (based on the traveling direction). It is stacked in a twisted state. Therefore, in the present invention, the meandering or distortion of the electrode sheet 10 is corrected, as will be described later.

Of course, the inspection device 170 may be disposed on the rear side of the laminator 160, that is, between the electrode cutter unit 161 and the laminating module 163. At this time, the inspection device 170 inspects the distortion of the electrode 11 and the position of the electrode 11 on the separator sheet 20.

Below, the description will be based on the case where the inspection device 170 is placed on the front side of the laminator 160.

The electrode loader 110, splicer 130, actuator 140, laminator 160, and inspection device 170 are electrically connected to the control unit 101. The control unit 101 controls each of the above-described electrically connected components. The control unit 101 has a standard correction range for the actuator 140 set in advance.

The reference correction range is a range in which the actuator 140 is moved in the width direction when finely correcting the moving direction of the electrode sheet. When the actuator 140 is moved within the standard correction range, the electrode loader 110 and the spool sensor 120 are not moved for fine correction of the moving direction of the electrode sheet 10. In addition, when the moving direction of the electrode sheet 10 needs to be corrected more than the fine correction, the actuator 140 is moved in the width direction so as to exceed the standard correction range, and the electrode loader 110 and spool sensor 120 are also moved in the width direction. moves in the direction This reference correction range can be appropriately adjusted or changed in consideration of the overall length of the laminating device 100, the width direction length and transfer speed of the electrode sheet 10, and the arrangement structure and distance between components of the laminating device 100. there is.

Additionally, in the control unit 101, positional information (coordinate data) regarding the separator 21 and the electrode 11 in the electrode cell C is preset. Position information about the separator 21 and the electrode 11 may be input to the control unit 101 depending on the size of the electrode cell C, the size and shape of the separator 21 and the electrode 11, etc.

The actuator 140 corrects the moving direction (width direction position) of the electrode sheet 10 based on the position correction information of the electrode 11 generated as a result of the inspection in the inspection device 170. When the correction value of the actuator 140 exceeds the standard correction range, the control unit 101 controls the electrode loader 110 to move in the width direction of the electrode sheet 10 to additionally correct the position of the electrode sheet 10. .

As described above, if the degree of meandering or twisting of the electrode sheet 10 is excessive and the correction value (width direction movement distance) of the actuator 140 deviates from the standard correction range preset in the control unit 101 (G1 in FIG. 2) , the electrode loader 110 moves in the same direction as the actuator 140 so that the electrode loader 110 and the actuator 140 move to a position that matches or almost matches the transfer direction of the electrode sheet 10 (Figure 2 G2). In addition, when the degree of meandering or twisting of the electrode sheet 10 is small and the correction value of the actuator 140 falls within the standard correction range, the electrode loader 110 and the spool sensor 120 adjust the correction value of the actuator 140 Regardless, it does not move in the width direction. To summarize this again, if the correction value of the actuator 140 is fine, only the actuator 140 is moved to finely correct the direction of movement of the electrode sheet 10, and if the correction value of the actuator 140 is excessive, the actuator ( 140) and the electrode loader 110 are moved in the same direction to significantly correct the moving direction of the electrode sheet 10. At this time, the spool sensor 120 may move in the same direction as the electrode loader 110, and the main sensor 150 may move in the same direction as the actuator 140.

Accordingly, the driving load of the actuator 140 can be significantly reduced when correcting the width direction position of the electrode sheet 10. Furthermore, even if the position of the electrode sheet 10 is rapidly corrected in the width direction, the actuator 140 and the electrode loader 110 move together and correct the position of the electrode sheet 10 to match the moving direction, so that the electrode sheet 10 It is possible to prevent hunting and meandering from temporarily increasing in some sections of the system.

The laminating device 100 further includes a spool sensor 120 that is disposed in front of the electrode loader 110 between the electrode loader 110 and the actuator 140 and detects the width direction position of the electrode sheet 10. At this time, the electrode loader 110 is aligned by moving in a direction corresponding to the width direction of the electrode sheet 10 in order to match the width direction position of the electrode sheet 10 detected by the spool sensor 120 to a predetermined position. . The spool sensor 120 is installed to be movable in the width direction of the electrode sheet 10.

The spool sensor 120 may be an edge position controller (EPC) sensor. The EPC sensor is a sensor that can move the electrode sheet 10 in the width direction while detecting the position of the electrode sheet 10 in the width direction.

If the correction value of the actuator 140 exceeds the standard correction range, the spool sensor 120 is moved in a direction corresponding to the width direction of the electrode sheet 10, and the electrode loader 110 moves the spool sensor 120. It is moved in the width direction of the electrode sheet 10 to correspond to the moving distance.

For example, when the actuator 140 is moved further to one side based on the reference correction range, the spool sensor 120 is moved in the width direction of the electrode sheet 10 in proportion to the moving distance of the actuator 140, The electrode loader 110 moves in the width direction of the electrode sheet 10 in proportion to the moving distance of the spool sensor 120. At this time, in the control unit 101, the width direction movement distance (correction value) of the spool sensor 120 is preset in proportion to the distance over which the correction value of the actuator 140 exceeds the standard correction range. Additionally, in the control unit 101, the width direction movement distance (correction value) of the electrode loader 110 is preset in proportion to the width direction movement distance (correction value) of the spool sensor 120. In addition, the width direction movement distance increases relatively as components move away from the actuator 140 so that the actuator 140, the spool sensor 120, and the electrode loader 110 are aligned with the moving direction of the electrode sheet 10.

Accordingly, the spool sensor 120 and the electrode loader 110 move at a constant proportional value in response to the correction value of the actuator 140, so when correcting the width direction position of the electrode sheet 10, the actuator 140 and the spool The sensor 120 and the electrode loader 110 may be placed in a position consistent with the direction of movement of the electrode sheet 10. As a result, when correcting the position of the electrode sheet 10, the driving load of the actuator 140 can be reduced, and hunting and meandering phenomena can be prevented from temporarily increasing in some sections of the electrode sheet 10.

If the correction value of the actuator 140 exceeds the standard correction range, the electrode loader 110 is moved to match the width direction center value of the correction position of the spool sensor 120. In other words, the electrode loader 110 is moved so that the width direction center value of the electrode loader 110 and the width direction center of the spool sensor 120 coincide with the moving direction of the electrode sheet 10. Accordingly, the electrode loader 110, the spool sensor 120, and the actuator 140 can be placed at a position that matches the moving direction of the electrode sheet 10. In addition, when the electrode loader 110 and the actuator 140 are moved in the same direction and the width direction position of the electrode sheet 10 is corrected, the overall moving direction of the electrode sheet 10 changes, so that the electrode in the actuator 140 The slip phenomenon of the sheet 10 can be prevented.

The laminating device 100 is a main sensor disposed in front of the actuator 140 between the actuator 140 and the laminator 160 and detects the width direction position of the electrode sheet 10 supplied to the front after passing through the actuator 140. It further includes (150). The main sensor 150 may be an edge position controller (EPC) sensor. The EPC sensor is a sensor that can move the electrode sheet 10 in the width direction while detecting the position of the electrode sheet 10 in the width direction.

At this time, the main sensor 150 is installed to be movable in the width direction of the electrode sheet 10. In order to match the width direction position of the electrode sheet 10 detected by the main sensor 150 to a predetermined position, the actuator 140 is moved in the width direction of the electrode sheet 10 to change the moving direction of the electrode sheet 10. Correct. By moving the main sensor 150 in a direction corresponding to the width direction of the electrode sheet 10 based on the position correction information of the electrode 11 generated as a result of the inspection in the inspection device 170, the actuator 140 operates the electrode sheet ( 10) Correct the direction of travel.

For example, based on the position correction information of the electrode 11 measured by the inspection device 170, the main sensor 150 is first moved in the width direction of the electrode sheet 10 to correct the moving direction of the electrode sheet 10. Then, the actuator 140 is moved in the width direction in proportion to the width direction movement distance of the main sensor 150. At this time, the control unit 101 pre-set the moving distance of the main sensor 150 in proportion to the position correction information of the electrode 11, and moves the actuator 140 in the width direction in proportion to the moving distance of the main sensor 150. The distance (compensation value) is preset.

Accordingly, since the actuator 140 moves at a constant proportional value in response to the correction value of the main sensor 150, when correcting the width direction position of the electrode sheet 10, the main sensor 150 and the actuator 140 move the electrode It can be placed in a position (on a straight line) consistent with the direction of movement of the sheet 10.

In addition, when the distance that the main sensor 150 moves in the width direction of the electrode sheet 10 exceeds the standard correction range, the electrode loader 110 moves in the width direction of the electrode sheet 10 to additionally remove the electrode sheet ( By performing position correction 10), the correction value of the actuator 140 is controlled so that it does not exceed the standard correction range. That is, when the correction value (movement distance) of the main sensor 150 is outside the standard correction range due to excessive meandering or twisting of the electrode sheet 10, the electrode loader 110 moves before the actuator 140 to move the electrode sheet. (10) is additionally corrected for position. Therefore, before the actuator 140 corrects the position of the electrode sheet 10, the position of the electrode sheet 10 is corrected in advance by the main sensor 150 and the electrode loader 110, so that the actuator 140 is within the reference correction range. It is possible to correct the position of the electrode sheet 10 so as not to exceed . In addition, the driving load of the actuator 140 can be significantly reduced.

If the distance that the main sensor 150 moves in the width direction of the electrode sheet 10 exceeds the standard correction range, the actuator 140 corrects the position to match the width direction center value of the correction position of the main sensor 150. can do.

If the correction value of the main sensor exceeds the standard correction range, the actuator 140 is moved to match the width direction center value of the correction position of the main sensor 150. In other words, the actuator 140 is moved so that the width direction center value of the actuator 140 and the width direction center of the main sensor 150 coincide with the moving direction of the electrode sheet 10. Accordingly, the main sensor 150 and the actuator 140 can be placed in a position that matches the moving direction of the electrode sheet 10.

Since the correction value of the actuator 140 exceeds the standard correction range, the electrode loader 110 moves in the width direction of the electrode sheet 10 to additionally correct the position, and then the control unit 101 performs correction of the actuator 140. Check whether the value has been reduced to fall within the standard calibration range.

In other words, when the electrode sheet 10 is excessively meandered or twisted, the actuator 140 corrects the width direction position of the electrode sheet 10 and then the electrode loader 110 adjusts the width direction position of the electrode sheet 10. When corrected again, the actuator 140 and the electrode loader 110 are moved to match the moving direction of the electrode sheet 10. Next, as the actuator 140 is moved in position to correspond to the correction value, the electrode sheet 10 is also moved in the width direction, so the correction value of the actuator 140 is reduced to fall within the standard correction range.

Subsequently, when the correction value of the actuator 140 is reduced to fall within the standard correction range, the correction process of the electrode sheet 10 is stopped and the electrode cell C is continuously manufactured. However, if the correction value of the actuator 140 still exceeds the standard correction range, the position correction of the electrode sheet 10 as described above is performed again.

The control method of the laminating device of the present invention configured as described above will be described.

Figure 4 is a flow chart schematically showing a laminating device according to the present invention.

Referring to FIG. 4, the electrode loader 110 supplies the electrode sheet 10 to the actuator 140 and the laminator 160 (S11). At this time, the electrode sheet 10 released from the electrode loader 110 is sequentially supplied to the splicer 130, the actuator 140, and the laminator 160.

When the electrode cutter unit 161 cuts the electrode 11 from the electrode sheet 10, the cut electrode 11 is stacked on the separator sheet 20. When the electrode laminate containing the separator sheet 20 and the electrode 11 is supplied to the laminating module 163, the laminating module 163 heats and pressurizes the electrode laminate to form the separator sheet 20 and the electrode 11. Combine. The separator cutter unit 165 forms an electrode cell C by cutting between the electrodes 11 in the separator sheet 20 of the electrode stack discharged from the laminating module 163.

The position of the electrode 11 is inspected by the inspection device 170 disposed on the front side of the laminator 160 (S12). The inspection device 170 provides a vision unit that measures the position of the electrode 11 by irradiating light.

The inspection device 170 inspects the position of the electrode 11 in the electrode cell C and determines whether the electrode 11 is distorted or deflected in the separator 21 of the electrode cell C (S13). At this time, when the electrode sheet 10 is transported in a meandering or twisted state, the electrode 11 cut by the electrode cutter unit 161 is biased at a predetermined distance to one side of the separator sheet 20, that is, the separator sheet 20 ) It is stacked in a distorted state based on the direction of progress.

The actuator 140 corrects the moving direction of the electrode sheet 10 based on the position correction information of the electrode 11 generated as a result of the inspection in the inspection device 170. For example, based on the position correction information of the electrode 11 measured by the inspection device 170, the main sensor 150 is first moved in the width direction of the electrode sheet 10 to correct the moving direction of the electrode sheet 10. Do it (S14). In addition, the electrode sheet 10 is corrected by moving the actuator 140 in the width direction in proportion to the width direction movement distance of the main sensor 150 (S15). At this time, the control unit 101 pre-set the moving distance of the main sensor 150 in proportion to the position correction information of the electrode 11, and moves the actuator 140 in the width direction in proportion to the moving distance of the main sensor 150. The distance (compensation value) is preset.

Accordingly, since the actuator 140 moves at a constant proportional value in response to the correction value of the main sensor 150, when correcting the width direction position of the electrode sheet 10, the main sensor 150 and the actuator 140 move the electrode It can be placed in a position (on a straight line) consistent with the direction of movement of the sheet 10.

In the above, the position correction of the main sensor 150 and the position correction of the actuator 140 may be performed sequentially or in the opposite order. Additionally, only one of the position correction of the main sensor 150 and the position correction of the actuator 140 may be performed.

The control unit 101 determines whether the correction value of the actuator 140 exceeds the standard correction range (S16).

When the correction value of the actuator 140 exceeds the standard correction range, the spool sensor 120 corrects the position of the electrode sheet 10 (S17). In addition, the electrode loader 110 moves in the width direction of the electrode sheet 10 to additionally correct the position of the electrode sheet 10 (S18). At this time, the position correction of the spool sensor 120 and the position correction of the electrode loader 110 may be performed sequentially or in the opposite order. Additionally, only one of the position correction of the spool sensor 120 and the position correction of the electrode loader 110 may be performed.

As described above, if the degree of meandering or twisting of the electrode sheet 10 is excessive and the correction value (width direction movement distance) of the actuator 140 exceeds the standard correction range preset in the control unit 101, the electrode loader 110 moves in the same direction as the actuator 140 so that the electrode loader 110 and the actuator 140 move to a position that matches or almost matches the transfer direction of the electrode sheet 10. In addition, when the degree of meandering or twisting of the electrode sheet 10 is so small that the correction value of the actuator 140 falls within the standard correction range, the electrode rod 110 moves in the width direction regardless of the correction value of the actuator 140. It doesn't work.

The control unit 101 determines whether the correction value of the actuator 140 exceeds the standard correction range again (S19).

If the correction value of the actuator 140 does not exceed the standard correction range again, the spool sensor 120 and the electrode loader 110 do not move in the width direction.

When the correction value of the actuator 140 exceeds the standard correction range again, the position of the electrode sheet 10 is corrected again as the spool sensor 120 moves in the width direction of the electrode sheet 10 (S20). In addition, as the electrode loader 110 moves in the width direction of the electrode sheet 10, the position of the electrode sheet 10 is additionally corrected (S21). At this time, recalibration of the position of the spool sensor 120 and recalibration of the position of the electrode loader 110 may be performed sequentially or in the opposite order. Only one of the position recalibration of the spool sensor 120 and the position recalibration of the electrode loader 110 may be performed.

As described above, the present invention has been described with reference to the illustrative drawings, but the present invention is not limited to the embodiments and drawings disclosed herein, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that transformation can occur. In addition, although the operational effects according to the configuration of the present invention were not explicitly described and explained in the above description of the embodiments of the present invention, it is natural that the predictable effects due to the configuration should also be recognized.

10: Electrode sheet
11: electrode
20: Separator sheet
21: separator
C: electrode cell
100: Laminating device
101: control unit
110: electrode loader
120: Spool sensor
130: Splicer
140: actuator
150: main sensor
160: Laminator
161: Electrode cutter part
163: Laminating module
165: Separator cutter part
170: Inspection device

Claims (14)

An electrode loader that supplies the electrode sheet forward;
An actuator located ahead of the electrode loader to correct the moving direction of the electrode sheet;
A laminator in front of the actuator for laminating the cut electrodes on a separator sheet after passing through the actuator; and
It includes an inspection device that inspects the position of the electrodes laminated in the laminator,
The actuator corrects the moving direction of the electrode sheet based on the position correction information of the electrode generated as a result of the inspection in the inspection device,
When the correction value of the actuator exceeds a preset standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position of the electrode sheet. According to paragraph 1,
It further includes a spool sensor disposed in front of the electrode loader between the electrode loader and the actuator to detect the width direction position of the electrode sheet,
The electrode loader is aligned by moving in a direction corresponding to the width direction of the electrode sheet in order to match the width direction position of the electrode sheet detected by the spool sensor to a predetermined position,
The spool sensor is installed to be movable in the width direction of the electrode sheet,
When the correction value of the actuator exceeds the standard correction range, the spool sensor is moved in a direction corresponding to the width direction of the electrode sheet, and the electrode loader is moved in the width direction of the electrode sheet to correspond to the movement distance of the spool sensor. Moved to a laminating device. According to paragraph 2,
When the correction value of the actuator exceeds the reference correction range, the electrode loader is moved to match the width direction center value of the correction position of the spool sensor. According to paragraph 1,
It further includes; a main sensor disposed in front of the actuator between the actuator and the laminator to detect the width direction position of the electrode sheet supplied forward past the actuator;
The main sensor is installed to be movable in the width direction of the electrode sheet,
The actuator corrects the moving direction of the electrode sheet to match the width direction position of the electrode sheet detected by the main sensor to a predetermined position,
By moving the main sensor in a direction corresponding to the width direction of the electrode sheet based on the position correction information of the electrode generated as a result of the inspection in the inspection device, the actuator corrects the moving direction of the electrode sheet,
When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, so that the correction value of the actuator exceeds the standard correction range. A laminating device that prevents this from happening. According to paragraph 4,
When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the actuator is position corrected to match the width direction center value of the correction position of the main sensor. According to paragraph 2,
The spool sensor is an edge position controller (EPC) sensor, a laminating device. According to paragraph 3,
A laminating device in which the main sensor is an edge position controller (EPC) sensor. According to paragraph 1,
When the correction value of the actuator exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, and then checks whether the correction value of the actuator has been reduced to fall within the standard correction range. , laminating device. An electrode loader supplying an electrode sheet to an actuator and a laminator;
inspecting the position of the electrode in an inspection device disposed on the front side of the laminator;
Compensating the moving direction of the electrode sheet by the actuator based on the position correction information of the electrode generated as a result of the inspection in the inspection device; and
When the correction value of the actuator exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position of the electrode sheet. According to clause 9,
When the correction value of the actuator exceeds the standard correction range, the spool sensor is moved in a direction corresponding to the width direction of the electrode sheet, and the electrode loader is moved in the width direction of the electrode sheet to correspond to the movement distance of the spool sensor. Control method of a moving laminating device. According to clause 10,
The electrode loader is moved to match the width direction center value of the correction position of the spool sensor. According to clause 9,
When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, so that the correction value of the actuator exceeds the standard correction range. A method of controlling a laminating device to prevent it from doing so. According to clause 12,
When the distance that the main sensor moves in the width direction of the electrode sheet exceeds the set distance, the actuator is position corrected to match the width direction center value of the correction position of the main sensor. According to clause 9,
When the correction value of the actuator exceeds the standard correction range, the electrode loader moves in the width direction of the electrode sheet to additionally correct the position, and then checks whether the correction value of the actuator has been reduced to fall within the standard correction range. , Control method of laminating device.