KR102370747B1 - Splicing Device of Secondary Battery Separator and Method the Same - Google Patents

Abstract

According to an embodiment of the present invention, a secondary battery separator bonding device comprises: a separator supply part consisting of a traveling roll in which a separator wound in a roll form is put into a secondary battery manufacturing process, and a standby roller which waits at one side of the traveling roll and connects a standby separator when a separator of the traveling roll is exhausted so that the separator is continuously introduced into the secondary battery manufacturing process; first and second separator bonding parts installed in a symmetrical structure on both left and right sides with a traveling path of the separator supplied from the separator supply part interposed therebetween; first and second sliding actuator parts providing a rail coupling structure so that the first and second separator bonding parts are reciprocally driven in a linear direction facing each other; a base plate on which first and second separator bonding parts are installed via the first and second sliding actuator parts; and a cutting guide unit coupled to the base plate in a structure capable of entering or exiting between the first separator bonding part and the second separator bonding part, and when cutting the separator, entering between the first separator bonding part and the second separator bonding part to make contact with either the first separator bonding part or the second separator bonding part and press the separator on the contact side to a surface of a vacuum suction plate to guide a cutter to perform cutting.

Description

Separator bonding device for secondary battery and method of bonding separator {Splicing Device of Secondary Battery Separator and Method the Same}

The present invention relates to a separator bonding apparatus for a secondary battery and a separator bonding method, and more particularly, when a separator is to be cut, it enters between the first separator junction part and the second separator junction part, and either the first separator junction part or the second separator junction part A cutting guide unit configured to guide the cutting operation of the cutter by pressing the separator on the contacted side to the surface of the vacuum suction plate by bringing it into contact with one side in a structure that can enter or exit between the first and second separator junctions. It relates to a separator bonding apparatus for a secondary battery and a separator bonding method.

In general, secondary batteries are manufactured by winding between a positive electrode film and a negative electrode film, and a separator is disposed between the two electrode films to prevent a short between the two electrode films.

The separator for secondary batteries is wound in the form of a roll and put into a secondary battery manufacturing process. When the separation membrane wound on the roll is exhausted, it must be replaced with a new separation membrane roller and put into the manufacturing process. At this time, the separation membrane of the exhausted separation membrane roll and the ends of the separation membrane unwound from the new separation membrane roll must be connected to each other and put into the manufacturing process.

On the other hand, in order to connect the separator to each other, both ends are bonded and connected using a tape. In general, using double-sided tape, the ends of the two separators are overlapped and attached to each other. When the separator is connected in this way, there is no need to precisely align the ends of the two separators, and thus the process and apparatus can be simplified. However, there is a problem in that the characteristics of the separators in the overlapped and adhered portions of the separators are different, and thus there is a high possibility of providing a cause of the performance deviation of the manufactured product.

As a prior art for solving this problem, a technology related to "a separator bonding apparatus for a secondary battery and an operating method" is disclosed through Korean Patent Registration No. 10-1892583.

The above-mentioned prior art includes a first holder on which the first separator roll on which the first separator is wound is mounted; a second holder on which a second separation membrane roll on which the second separation membrane is wound is mounted; When the first separator is supplied to the secondary battery manufacturing process and is exhausted, a first adsorption part which is vacuum-adsorbed and fixed, and a first for cutting the first separator fixed to the first adsorption part by protruding from the first adsorption part a first bonding unit including a cutting part and a first moving part for moving the first adsorption part in the direction of the first bonding unit; and a second compression part that faces and closes the first adsorption part and presses the first separator so that the first cut part facilitates cutting the first separator, and half of the adhesive surface of the tape at the end of the second separator a second adsorption part for adhering the end of the first separator to the other half of the adhesive surface of the tape in close proximity to the first adsorbing part facing and adhering to the non-adhesive surface of the tape by vacuum adhering; The second suction unit or the second suction unit according to the rotation operation of the second rotating unit and the second rotating unit for rotating the second compression unit and the second suction unit so that the compression unit or the second suction unit faces the first suction unit A configuration of the second bonding unit comprising a second moving part for moving the second crimping unit in the direction of the first bonding unit is proposed.

In this prior art separation membrane bonding device, in the case of the first bonding unit, the first compression unit and the first suction unit are formed as a single body in the "a"-shape direction orthogonal to each other, so that the first compression unit is driven by the first rotation unit. The part or the first adsorption part selectively abuts against the side of the second bonding unit to alternately perform a separation membrane cutting operation or a separation membrane bonding operation.

In the case of the second bonding unit having a symmetrical structure with the first bonding unit, the second bonding unit and the second suction unit are formed as a single body in the "a"-shape direction orthogonal to each other, so that the The second compression unit or the second adsorption unit selectively comes into contact with the first bonding unit side to alternately perform a separation membrane cutting operation or a separation membrane bonding operation.

However, in the separation membrane bonding apparatus of the prior art, as both the separation membrane cutting process and the separation membrane bonding process, both the first bonding unit and the second bonding unit have a structure in which the entire first bonding unit and the second bonding unit must move and face each other, the problem of overlapping copper lines is a problem. there was.

In addition, the prior art has a problem in that the operation is delayed as the copper wire is overlapped.

In addition, the above-described prior art has a problem in that the structure is complicated and the size of the separator roll that can be put into operation at a time is limited due to structural problems, so that the separator has to be replaced frequently.

Republic of Korea Patent No. 10-1892583 Republic of Korea Patent Registration No. 10-0915269

In the present invention, when the separation membrane is to be cut, it enters between the first separator junction part and the second separator junction part so that it comes into contact with either one of the first separator junction part or the second separator junction part, and the separator on the contacted side is pressed against the surface of the vacuum adsorption plate. To provide a separator bonding device and a separator bonding method for a secondary battery in which a cutting guide unit configured to guide the cutting operation of the cutter is installed between the first separator junction part and the second separator junction part in a structure that can enter or exit.

In addition, the present invention is to minimize the working flow of the first separator junction portion and the second separator junction portion.

Another object of the present invention is to enable preparatory work, such as a taping operation to input the atmospheric separation membrane, to be performed in advance using the separation membrane junction on the opposite side separately from this while supplying the traveling membrane.

According to one aspect of the present invention, a separation membrane wound in the form of a roll is connected to a running roll, which is put into the secondary battery manufacturing process, and the atmospheric separator when the separation membrane of the running roll is exhausted while waiting on one side of the running roll, so that the separator is secondary a separator supply unit comprising a standby roller for continuous input to the battery manufacturing process;
first and second separator junctions installed in a symmetrical structure on left and right sides with a running path of the separator supplied from the separator supply unit therebetween;
first and second sliding driving units providing a rail coupling structure so that the first and second separator junctions are reciprocally driven in a linear direction facing each other;
a base plate on which first and second separator junctions are installed via the first and second sliding actuators; and
It is coupled to the base plate in a structure that can enter or exit between the first separator junction and the second separator junction, and when the separator is cut, it enters between the first separator junction and the second separator junction to either the first or second separator junction. A cutting guide unit configured to contact one side of the separation membrane junction and press the contacted side separation membrane to the surface of the vacuum suction plate to guide the cutting operation of the cutter.
The first and second separator junctions may include a cradle having one end coupled to the first and second sliding driving units;
an adsorption unit coupled to the holder so that the separation membrane is adsorbed on the front side;
a rotation unit axially coupling the adsorption unit to the holder so as to be rotatable by 90 degrees; and
A cutting unit coupled to the cradle and operating so that the cutter blade penetrates the upper and lower boundary regions of the adsorption unit to cut the separation membrane; and
The cutting guide unit,
a guide block in contact with the adsorption unit surface of the first and second separation membrane junctions to press and support the separation membrane therebetween;
a forward/backward driving unit operable to advance the guide block on the traveling path of the separation membrane or to withdraw the guide block from the traveling path; and
It includes; a mounting bracket for coupling the advancing and retreating driving unit to be supported on the base plate;
The separator of the traveling roll is released in a direction facing the standby roll, passes between the first and second separator junctions in a straight path, and is input to the secondary battery manufacturing process. can

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In addition, the first and second sliding driving units,

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a first-stage advancing unit for mounting the first and second separation membrane junctions and moving them to the position of the cutting guide unit; and

and a two-stage advancing unit for moving the first and second separation membrane junctions advanced by one stage to a position where they abut each other.

In addition, first and second guide rollers for guiding the separation membranes of the traveling roll and the standby roll toward the first and second separation membrane junctions are formed on the base plate, respectively, and the first and second guide rollers and the traveling roll and the standby roll It is characterized in that between the first and second tension rollers for adjusting the tension of the separation membrane, respectively.

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According to another aspect of the present invention, the rotation unit provided on the side of the first separator junction is rotated by 90° to make the vacuum suction plate in a horizontal state, and then the non-adhesive side of the single-sided tape is adsorbed to the vacuum suction plate;
allowing the ends of the atmospheric roll separator to overlap and adhere only to a portion corresponding to half of the adhesive surface of the single-sided tape, and to adsorb the atmospheric roll separator together with the single-sided tape to the vacuum suction plate;
rotating the first separation membrane junction side rotating unit to its original state so that the atmospheric roll separation membrane adsorbed on the vacuum suction plate is in the standby state;
The second tension roller is moved to the right to release the tension applied to the traveling roll separation membrane, and the guide block enters the separation membrane traveling path so that the vacuum suction plate at the junction of the second separation membrane comes into contact, and vacuum pressure is applied to the vacuum suction plate. forming and cutting the traveling roll separation membrane by a cutter blade protruding through the vacuum suction plate in a state in which the traveling roll separation membrane is adsorbed;
allowing the remaining amount of the separation membrane on the traveling roll side to be recovered from among the cut traveling roll separation membranes, and adsorbing the separation membrane on the opposite side to the upper side adsorption unit of the vacuum suction plate;
The steps of the atmospheric roll separation membrane waiting at the first separation membrane junction side and the running roll separation membrane at the second separation membrane junction side adsorbed to the vacuum suction plate by the operation of the first and second sliding driving parts, and bonding with a single-sided tape; including,
After the stage in which the atmospheric roll separator adsorbed to the vacuum suction plate is in the standby state, when the limit remaining amount of the running roll separator is checked through the residual amount sensor (SE), the separator for the secondary battery to automatically proceed with the replacement operation of the running roll separator A method may be provided.

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In the present invention, when the separator is to be cut, it enters between the first separator junction part and the second separator junction part so that it comes into contact with either side of the first separator junction part or the second separator junction part. By installing a cutting guide unit designed to guide the cutting operation of

It is possible to minimize the working flow of the first separator junction part and the second separator junction part, and the workability is improved, which improves productivity, and the structure of the separator junction device can be miniaturized and made simple due to the simplification of the working flow. have

In addition, the present invention has a convenient effect by allowing the operator to perform preparatory work, such as a taping operation for inputting the atmospheric separation membrane, separately from this even during the running separation membrane operation.

In addition, the present invention has the effect of ensuring the uniformity of quality and performance of the secondary battery by continuously supplying the separator between the positive electrode film and the negative electrode film without interruption in the secondary battery manufacturing process.

1 is a perspective view showing a separator bonding device for a secondary battery according to an embodiment of the present invention.
Figure 2 is a schematic view for explaining the operation structure of the separator bonding device for a secondary battery according to an embodiment of the present invention.
Figure 3 is an enlarged perspective view showing a separation membrane junction according to an embodiment of the present invention.
4 is an enlarged perspective view of a main part showing a sliding driving unit according to an embodiment of the present invention.
Figure 5 is an enlarged perspective view of the main portion showing the cutting guide unit according to an embodiment of the present invention.
6 is a process diagram sequentially illustrating a method for bonding a separator for a secondary battery according to an embodiment of the present invention.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed herein are only exemplified for the purpose of explaining the embodiments according to the concept of the present invention, and the embodiment according to the concept of the present invention These may be embodied in various forms and are not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention may have various changes and may have various forms, the embodiments will be illustrated in the drawings and described in detail herein. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes changes, equivalents, or substitutes included in the spirit and scope of the present invention.

Terms such as first or second may be used to describe various elements, but the elements should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, a first component may be named a second component, Similarly, the second component may also be referred to as the first component.

When an element is referred to as being “connected” or “connected” to another element, it is understood that it may be directly connected or connected to the other element, but other elements may exist in between. it should be On the other hand, when it is said that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle. Expressions describing the relationship between elements, for example, “between” and “between” or “directly adjacent to”, etc. should be interpreted similarly.

The terminology used herein is used only to describe specific embodiments, and is not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate that the described feature, number, step, operation, component, part, or combination thereof exists, and includes one or more other features or numbers, It should be understood that the possibility of the presence or addition of steps, operations, components, parts or combinations thereof is not precluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present specification. does not

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, the scope of the patent application is not limited or limited by these embodiments. Like reference numerals in each figure indicate like elements.

Figure 1 is a perspective view showing a separator bonding apparatus according to an embodiment of the present invention, Figure 2 is a schematic diagram for explaining the operating structure of the separator bonding apparatus according to an embodiment of the present invention, Figure 3 is an embodiment of the present invention is an enlarged perspective view of the main part showing the separation membrane junction according to FIG. 4 is an enlarged perspective view of the main part showing the sliding driving part according to an embodiment of the present invention, and FIG. 5 is an enlarged main part showing a cutting guide unit according to an embodiment of the present invention It is a perspective view, and FIG. 6 is a process diagram sequentially illustrating a method for bonding a separator for a secondary battery according to an embodiment of the present invention.

1 and 2, the separation membrane bonding apparatus 100 according to this embodiment is largely a separation membrane supply unit 110, first and second separation membrane bonding units 120 and 120', first and second sliding driving units ( 130 and 130 ′), the base plate 140 , and a cutting guide unit 150 .

Hereinafter, the separation membrane supply unit 110 will be described first with reference to FIG. 2 .

Referring to FIG. 2 , in the separator supply unit 110 according to the present invention, the separator is wound in the form of a roll and is input to the secondary battery manufacturing process.

At this time, two separator rolls are installed adjacent to each other so that the separators are alternately introduced into the secondary battery manufacturing process, thereby ensuring continuity of separator supply.

At this time, the separator roll in a state in which the separator is released from among the two separator rolls and is being put into the secondary battery manufacturing process is referred to as a running roll 111 , and the separator roll in a standby state on one side of the running roll 111 is a standby roll It is called (112).

At this time, the atmospheric roll 112 is connected to the end of the running separation membrane 111a by releasing the atmospheric separation membrane 112a when the running separation membrane 111a on the traveling roll 111 side is exhausted to connect the atmospheric separation membrane 112a. This secondary battery manufacturing process is continuously inputted. From this point on, the standby roll 112 becomes the running roll 111 to put the running separator 111a in the secondary battery manufacturing process, and the empty roll with the separator exhausted is replaced with a new standby roll 112 to be in a standby state. will be in

The traveling separator 111a supplied from the separator supply unit 110 passes through a straight path between the first and second separator junctions 120 and 120 ′ and is input to the secondary battery manufacturing process.

At this time, the running separator 111a of the running roll 111 is released in a direction facing the standby roll 112 and passes between the first and second separator junction portions 120 and 120 ′ in a straight path to pass through the secondary battery manufacturing process to be put into

Hereinafter, the first and second separator junction portions 120 and 120 ′ will be described with reference to FIGS. 1, 2 and 3 .

The first separator junction part 120 and the second separator junction part 120' are respectively installed in a symmetrical structure on the left and right sides with the running path of the running separator 111a interposed therebetween.

The first separator junction 120 and the second separator junction 120 ′ do not operate while the running separator 111a is supplied, and only when the running separator 111a of the running roll 111 is exhausted. By replacing the 111 with the atmospheric roll 112, it is involved in connecting the atmospheric separation membrane 112a.

The detailed configuration of the first and second separator junctions 120 and 120' is composed of the same components, and they are arranged in a mutually symmetrical structure. Therefore, the detailed configuration of the first and second separation membrane junctions 120 and 120' will be described at once without separate description.

The first and second separation membrane junctions 120 and 120 ′ have a configuration including a holder 121 , an adsorption unit 122 , a rotation unit 123 , and a cutting unit 124 .

First, the holder 121 provides a plate structure extending in the longitudinal direction in which one end is coupled to first and second sliding driving units 130 and 130', which will be described later. , the rotation unit 123, the cutting unit 124 is installed.

Hereinafter, the adsorption unit 122 will be described with reference to the accompanying drawings.

The adsorption unit 122 of the present invention is coupled to the holder 121 so that the separation membrane is adsorbed on the front surface, and a plate-shaped vacuum adsorption plate 122a is formed on the front surface, and a vacuum nozzle ( 122e) are installed so that a vacuum pressure is formed on the vacuum suction plate (122a).

The vacuum adsorption plate 122a is separated into an upper adsorption part 122b and a lower adsorption part 122c, and a slit cut in the transverse direction at the boundary part separated into the upper adsorption part 122b and the lower adsorption part 122c A groove 122d is formed.

The slit groove 122d guides the cutter blade 124a to protrude from the rear surface of the vacuum suction plate 122a in the front direction so that the traveling separation membrane 111a adsorbed to the vacuum suction plate 122a is removed by the cutter blade 124a. to be cut

In addition, the vacuum adsorption plate 122a may be separated into an upper adsorption part 122b and a lower adsorption part 122c to form separate vacuum pressures, respectively.

For example, when cutting the running separator 111a, both the upper adsorption part 122b and the lower adsorption part 122c form a vacuum state to fix the running separator 111a, and after the running separator 111a is cut is to release the vacuum pressure on the side from which the separation membrane is removed, and for the other side to maintain the vacuum pressure until the bonding process of the separation membrane is finished.

And, the vacuum suction plate (122a) may be formed such that a gap maintaining roller (122f).

At this time, the gap maintaining roller (122f) is coupled to the front end of the vacuum suction plate (122a) on the side into which the separation membrane enters to prevent the separation membrane from directly contacting and interfering with the front end of the vacuum suction plate (122a).

In addition, a rotation unit 123 for pivotally coupling the adsorption unit 122 rotatably by 90 degrees is installed on the holder 121 .

Hereinafter, the rotation unit 123 will be described with reference to the accompanying drawings.

The rotation unit 123 is axially coupled to both ends of the adsorption unit 122 to the holder 121 to enable rotation in a 90 degree direction.

At this time, one side of the adsorption unit 122 is shaft-coupled to the cradle 121 on the side of the first and second sliding driving units 130 and 130' by the driven shaft 123a.

And, the other side of the adsorption unit 122 is rotatably coupled to the opposite end of the holder 121 by the drive shaft (123b). At this time, the drive shaft 123b is connected to the direction changing cylinder 123c and rotates so that the adsorption unit 122 is rotated by 90 degrees.

In this case, the direction changing cylinder 123c may be a hydraulic cylinder operated by hydraulic pressure.

Hereinafter, the cutting unit 124 will be described with reference to the accompanying drawings.

The cutting unit 124 is mounted such that a cutter blade 124a for cutting the traveling separation membrane 111a can protrude and retract toward the front of the adsorption unit 122 .

The cutting unit 124 operates the cutter blade 124a forward and backward by an actuator operated by hydraulic pressure or an electric signal.

The body of the cutting unit 124 is coupled to the upper portion of the holder 121 located on the back surface of the vacuum suction plate (122a).

The cutter blade (124a) is manufactured in the form of a blade extending long in the transverse direction, penetrates the slit groove (122d) formed in the vacuum suction plate (122a) from the rear to protrude forward, and is also adsorbed to the vacuum suction plate (122a). The running separation membrane 111a in the finished state is cut at a time.

The first and second separator junction portions 120 and 120 ′ as described above are respectively mounted on the first and second sliding driving units 130 and 130 ′ to provide a rail coupling structure so as to be reciprocally driven in a linear direction facing each other.

Hereinafter, the first and second sliding driving units 130 and 130' will be described with reference to the accompanying drawings.

The first and second sliding driving units 130 and 130 ′ provide a multi-stage slide operation structure including a first stage advancing unit 131 and a second stage advancing unit 132 .

The first stage advancing part 131 serves to mount the first and second separator junction parts 120 and 120 ′ and move them to the position of the cutting guide unit 150 .

At this time, the first-stage advancing part 131 has a first-stage slider 131a made of a plate-shaped body that is coupled to the front side of the adsorption unit 122 and is rail-coupled to the two-stage advancing unit 132 on the back side, and the cylinder body. is fixed to the base plate 140 side and a piston arm extending and contracting from the cylinder body is connected to the first-stage slider 131a to slide or pull the first-stage slider 131a. It consists of a first-stage actuator 131b. .

In addition, the two-stage advancing part 132 serves to move the first and second separator junction parts 120 and 120 ′ to a position where they come into contact with each other.

At this time, the two-stage advancing part 132 includes a two-stage slider 132a consisting of a plate-shaped body coupled to the front surface of the first-stage slider 131a and rail-coupled to the base plate 140 side, and a cylinder body. A piston arm fixed to the side of the base plate 140 and expanding and contracting from the cylinder body is connected to the two-stage slider 132a to push or pull the two-stage slider 132a to slide and drive the two-stage actuator 132b.

Hereinafter, the base plate 140 will be described with reference to FIG. 1 attached thereto.

The base plate 140 is used as a base structure for installing the first and second separator junction portions 120 and 120 ′, the first and second sliding driving units 130 and 130 ′, and the cutting guide unit 150 , and the above-described base plate Reference numeral 140 is arranged in combination with the structure of the secondary battery manufacturing process.

A cutting guide unit 150 is installed at the upper central position of the base plate 140 .

Hereinafter, the cutting guide unit 150 will be described with reference to the accompanying FIGS. 1, 2 and 5 .

The cutting guide unit 150 usually retreats to the rear of the base plate 140 and is in a standby state, and when cutting the running separator 111a, it enters the driving path of the running separator 111a and enters the running separator 111a. involved in cutting the

The cutting guide unit 150 is coupled to the base plate 140 in a structure that can enter or exit between the first separator junction part 120 and the second separator junction part 120', and to cut the running separator 111a. When doing this, it enters between the first separator junction 120 and the second separator junction 120 ′ and comes into contact with either side of the first separator junction 120 or the second separator junction 120 ′, so that the running separator of the contacting side is brought into contact. (111a) is pressed to the surface of the vacuum suction plate (122a) to guide the cutting operation of the cutter blade (124a).

The cutting guide unit 150 first forms a guide block 151 for pressing and supporting the separation membrane in contact with the surface of the adsorption unit 122 of the first and second separation membrane junctions 120 and 120 ′.

The guide block 151 is manufactured in the form of a rectangular block extending in the longitudinal direction. A long hole groove 151a extending long in the transverse direction of the guide block 151 is formed.

The long hole 151a is manufactured to have the same length and width as the slit groove 122d of the vacuum suction plate 122a. The long hole 151a is such that a part of the cutter blade 124a protruding outside the slit groove 122d of the vacuum suction plate 122a is accommodated.

The guide block 151 as described above is moved forward and backward in the direction of the base plate 140 by the forward and backward driving unit 152 .

The advancing and retreating driving unit 152 is coupled to the base plate 140 using a mounting bracket 153 .

The advancing and retreating driving unit 152 operates to advance the guide block 151 on the driving path of the separation membrane or to withdraw it on the driving path.

The advancing and retreating driving unit 152 includes a slide holder 152a for slidably mounting the guide block 151 on the mounting bracket 153, the cylinder body is coupled to the mounting bracket 153, and a piston that expands and contracts from the cylinder body. The arm is coupled to the guide block 151 and includes a driving cylinder 152b to push or pull the guide block 151 to move it.

In addition, the base plate 140 has first and second guides for guiding the separation membranes 111a and 112a of the traveling roll 111 and the standby roll 112 toward the first and second separation membrane junction portions 120 and 120 ′, respectively. Rollers 141 and 142 are formed, and between the first and second guide rollers 141 and 142 and the traveling roll 111 and the standby roll 112, first and second for adjusting the tension of the separation membranes 111a and 112a, respectively Tension rollers 143 and 144 are formed.

Hereinafter, a method for bonding a separator for a secondary battery according to the present invention will be described with reference to FIGS. 2 and 6 attached thereto.

6 is a process diagram sequentially illustrating a method for bonding a separator for a secondary battery according to an embodiment of the present invention. As shown in FIG. 2 , the separator roll on the right is the running roll 111 , and the separator roll on the left is the standby roll 112 . ) in the state, the separation membrane bonding process for converting the standby roll 112 on the left to the running roll 111 will be described.

Referring to FIG. 6A , the running roll separator 111a on the right is put into the secondary battery manufacturing process.

Thereafter, when the exhaustion time of the right traveling roll separation membrane 111a is gradually approached, the operator prepares to replace the traveling roll separation membrane 111a with the standby roll separation membrane 112a.

Accordingly, referring to FIG. 6b , the rotation unit 123 provided on the side of the first separator junction 120 rotates 90° to make the vacuum suction plate 122a in a horizontal state, and then the non-adhesive side of the single-sided tape TP is It is to be adsorbed to the vacuum suction plate (122a).

Thereafter, referring to FIG. 6c , the ends of the atmospheric roll separator 112a are overlapped and adhered only to a portion corresponding to half of the adhesive surfaces of the single-sided tape TP, and the atmospheric roll separator 112a is a single-sided tape TP) and to be adsorbed to the vacuum adsorption plate (122a).

Thereafter, referring to FIG. 6d , the rotation unit 123 on the side of the first separation membrane junction 120 is rotated to its original state so that the atmospheric roll separation membrane 112a adsorbed to the vacuum suction plate 122a is in the standby state.

At this time, the vacuum suction plate (122a) is waiting in a state in which the vacuum pressure is applied.

Thereafter, when the limit remaining amount of the running roll separator 111a is checked through the residual amount sensor SE, the replacement operation of the running roll separator 111a is automatically performed.

Referring to FIG. 6E , the second tension roller 144 is moved to the right to release the tension applied to the traveling roll separation membrane 111a, and the guide block 151 is entered on the separation membrane traveling path to join the second separation membrane. (120') so that the side of the vacuum suction plate (122a) is in contact.

At this time, the vacuum suction plate 122a moves from the right direction to the left direction in the drawing by the first-stage advancing part 131 of the second sliding driving unit 130 to come into contact with the guide block 151 .

At this time, the traveling roll separation membrane 111a is interposed between the guide block 151 and the vacuum suction plate 122a, and the vacuum suction plate 122a forms a vacuum pressure so that the traveling roll separation membrane 111a is adsorbed. The traveling roll separator 111a is cut by the cutter blade 124a protruding through the vacuum suction plate 122a.

6F, the remaining amount of the separation membrane 111a on the side of the traveling roll 111 of the cut traveling roll separation membrane 111a is recovered, and the separation membrane 111a on the opposite side is on the upper side adsorption part 122b of the vacuum suction plate 122a. adsorbed state.

Referring to FIG. 6G, the atmospheric roll separation membrane 112a, which was waiting on the side of the first separation membrane junction 120, is adsorbed to the vacuum suction plate 122a by the operation of the first sliding driving unit 130 (refer to FIG. 4). moves from the left to the right.

And, the running roll separation membrane 111a, which was on standby at the second separation membrane junction part 120', is adsorbed to the vacuum suction plate 122a by the operation of the second sliding driving part 130' (refer to FIG. 4) on the right side of the drawing. direction to the left.

At this time, the first and second sliding driving units 130 and 130 ′ operate the first stage advancing unit 131 and the second stage advancing unit 132 together so that the vacuum suction plates 122a on both sides come into contact with each other.

At this time, the standby roll separator 112a on the side of the first separator junction 120 is in a state of being adhered to half of the single-sided tape TP, and the running roll separator 111a on the second separator junction 120 'side is attached to the other half. By this adhesion, the running roll separator 111a and the atmospheric roll separator 112a are joined.

Referring to FIG. 6H , the first and second separator junction parts 120 and 120 ′ return to their original state, and the standby roll 112 is replaced with the running roll 111 , and the atmospheric separation membrane 112a is introduced into the secondary battery manufacturing process. do.

As described above, in the present invention, when the separator is to be cut, it enters between the first separator junction part and the second separator junction part so that it comes into contact with either side of the first separator junction part or the second separator junction part, so that the separator on the contacting side is the vacuum adsorption plate surface. By installing the cutting guide unit to guide the cutting operation of the cutter by applying pressure to the first separator junction part and the second separator junction part in a structure that can enter or exit the junction part, the working flow of the first separator junction part and the second separator junction part is minimized In addition to improving the workability, productivity is improved, and the structure of the separation membrane bonding device can be miniaturized and simple fabrication is possible due to the simplification of the work flow.

In addition, the present invention is convenient because the operator can perform preparatory work such as a taping operation for inputting the atmospheric separator separately during the running separator operation, and the separator between the positive electrode film and the negative electrode film in the secondary battery manufacturing process It is possible to ensure uniformity of quality and performance of secondary batteries by continuously supplying them without interruption.

As described above, although the embodiments have been described with reference to the limited drawings, various modifications and variations are possible by those skilled in the art from the above description. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

100: separation membrane bonding device 110: separation membrane supply unit
111: running roll 111a: running roll separator
112: atmospheric roll 112a: atmospheric roll separator
120, 120': first, second separator junction 121: cradle
122: adsorption unit 122a: vacuum adsorption plate
122b: upper adsorption unit 122c: lower adsorption unit
122d: slit groove 122e: vacuum nozzle
122f: gap maintaining roller 123: rotation unit
123a: driven shaft 123b: drive shaft
123c: direction change cylinder 124: cutting unit
124a: cutter blade
130, 130': first, second sliding driving unit 131: one-step forward unit
131a: 1-stage slider 131b: 1-stage actuator
132: two-stage forward portion 132a: two-stage slider
132b: two-stage actuator
140: base plate 141: first guide roller
142: second guide roller 143: first tension roller
144: second tension roller
150: cutting guide unit 151: guide block
151a: Janggong Home 152: Jinreegudongbu
152a: slide holder 152b: driving cylinder
153: mounting bracket TP: single-sided tape

Claims (7)

A separation membrane wound in the form of a roll is connected to a running roll, which is put into the secondary battery manufacturing process, and the atmospheric separator is connected when the separation membrane of the running roll is exhausted while waiting on one side of the running roll so that the separator is continuously introduced into the secondary battery manufacturing process Separation membrane supply unit consisting of an atmospheric roller;
first and second separator junctions installed in a symmetrical structure on left and right sides with a running path of the separator supplied from the separator supply unit therebetween;
first and second sliding driving units providing a rail coupling structure so that the first and second separator junctions are reciprocally driven in a linear direction facing each other;
a base plate on which first and second separator junctions are installed via the first and second sliding actuators; and
It is coupled to the base plate in a structure that can enter or exit between the first separator junction and the second separator junction, and when the separator is cut, it enters between the first separator junction and the second separator junction to either the first or second separator junction. A cutting guide unit configured to contact one side of the separation membrane junction and press the contacted side separation membrane to the surface of the vacuum suction plate to guide the cutting operation of the cutter.
The first and second separator junctions may include a cradle having one end coupled to the first and second sliding driving units;
an adsorption unit coupled to the holder so that the separation membrane is adsorbed on the front side;
a rotation unit axially coupling the adsorption unit to the holder so as to be rotatable by 90 degrees; and
A cutting unit coupled to the cradle and operating so that the cutter blade penetrates the upper and lower boundary regions of the adsorption unit to cut the separation membrane; and
The cutting guide unit,
a guide block in contact with the adsorption unit surface of the first and second separation membrane junctions to press and support the separation membrane therebetween;
a forward/backward driving unit operable to advance the guide block on the traveling path of the separation membrane or to withdraw the guide block from the traveling path; and
and a mounting bracket for coupling the advancing and retreating driving unit to be supported on the base plate;
Separator bonding apparatus for secondary batteries, characterized in that the separation membrane of the traveling roll is released in a direction facing the standby roll, passes between the first and second separation membrane junctions in a straight path, and is input to the secondary battery manufacturing process.
delete The method of claim 1,
The first and second sliding driving units may include: a first-stage advancing unit for mounting the first and second separation membrane junctions and moving them to the position of the cutting guide unit; and
Separator bonding apparatus for a secondary battery comprising a; a two-stage advancing unit for moving the first and second separation membrane junctions advanced by one stage to a position where they abut each other.
delete delete The method of claim 1,
First and second guide rollers for guiding the separation membranes of the traveling roll and the standby roll toward the first and second separation membrane junctions are formed on the base plate, respectively, and between the first and second guide rollers and the traveling roll and the standby roll Separator bonding apparatus for a secondary battery, characterized in that the first and second tension rollers for adjusting the tension of the separator are respectively formed.
a step of rotating the rotation unit provided on the side of the first separator junction part by 90° to make the vacuum suction plate in a horizontal state, and then allowing the non-adhesive side of the single-sided tape to be adsorbed to the vacuum suction plate;
allowing the ends of the atmospheric roll separator to overlap and adhere only to a portion corresponding to half of the adhesive surface of the single-sided tape, and to adsorb the atmospheric roll separator together with the single-sided tape to the vacuum suction plate;
rotating the first separation membrane junction side rotating unit to its original state so that the atmospheric roll separation membrane adsorbed on the vacuum suction plate is in the standby state;
The second tension roller is moved to the right to release the tension applied to the traveling roll separation membrane, and the guide block enters the separation membrane traveling path so that the vacuum suction plate at the junction of the second separation membrane comes into contact, and vacuum pressure is applied to the vacuum suction plate. forming and cutting the traveling roll separation membrane by a cutter blade protruding through the vacuum suction plate in a state in which the traveling roll separation membrane is adsorbed;
allowing the remaining amount of the separation membrane on the traveling roll side to be recovered from among the cut traveling roll separation membranes, and adsorbing the separation membrane on the opposite side to the upper side adsorption unit of the vacuum suction plate;
The steps of the atmospheric roll separation membrane waiting at the first separation membrane junction side and the running roll separation membrane at the second separation membrane junction side adsorbed to the vacuum suction plate by the operation of the first and second sliding driving parts, and bonding with a single-sided tape; including,
After the stage in which the atmospheric roll separator adsorbed to the vacuum suction plate is in the standby state, when the limit remaining amount of the running roll separator is checked through the residual amount sensor (SE), the separator for the secondary battery to automatically proceed with the replacement operation of the running roll separator method.

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