KR20220069221A - Tape attachment device for secondary battery - Google Patents

Abstract

Disclosed is an apparatus for attaching a tape for a secondary battery. A tape attaching device for a secondary battery according to the present invention includes a tape supply unit supplying a tape to be attached to an outer surface of a pouch-type secondary battery cell and a side folding part formed on the pouch-type secondary battery cell, and a tape connected to the tape supply unit and supplied A combined tape cutting clamping unit for cutting and clamping the cut tape, and a tape attachment unit connected to the tape cutting combined clamping unit and attaching the cut tape to the outer and side folding parts of the pouch-type secondary battery cell.

Description

Tape attachment device for secondary battery

The present invention relates to an apparatus for attaching a tape for a secondary battery, and more particularly, to a tape attaching apparatus for a secondary battery for automatically attaching a tape to an outer surface of a secondary battery cell.

In general, secondary cells convert chemical energy into electrical energy to supply power to an external circuit, and when discharged, receive external power to convert electrical energy into chemical energy to store electricity points to Such a secondary battery is also commonly referred to as a capacitor.

Such secondary batteries may be variously classified according to their shape. For example, the secondary battery may be classified into a prismatic structure, a cylindrical structure, a pouch-type structure, and the like.

A secondary battery with a cylindrical structure is covered with a can, which is made of iron and nickel-plated material.

The secondary battery of the pouch-type structure uses a pouch as an exterior material for enclosing the electrode stack, and the secondary battery of the pouch-type structure can have higher energy density per unit weight and volume, and can be thinner and lighter. There are advantages to doing

A pouch-type secondary battery includes an electrode assembly in which a positive electrode plate and a negative electrode plate filled with an electrode active material and a separator interposed between the positive electrode plate and the negative electrode plate are stacked.

A positive electrode tab is formed on one side of the positive electrode plate, and a negative electrode tab is formed on one side of the negative electrode plate. Each of the taps is connected to an external circuit by being connected to a lead. This electrode assembly is sealed by a pouch, which is an exterior material.

The pouch consists of a cover and a case, and a side folding part is formed on the long-width side of the pouch, in which the edges of the cover and the case are folded.

However, when a predetermined time elapses, the above-described side folding part may not continue to be maintained in a folded state, and a part may be unfolded and protruded to the outside. There is a problem in that the volume of the pouch-type secondary battery is increased by the side folding part that is partially unfolded and protruded to the outside, and the working space is wasted, and the side folding part is damaged by thermal expansion when power is applied to the pouch-type secondary battery. .

Republic of Korea Patent Publication No. 10-2003-0086069, (2003.11.07.)

SUMMARY OF THE INVENTION An object of the present invention is to provide a tape attachment device for a secondary battery that attaches a tape to an outer surface and a side folding part of a pouch-type secondary battery cell so that the side folding part of the pouch-type secondary battery cell is maintained in a folded state.

According to an aspect of the present invention, a tape supply unit for supplying a tape to be attached to the outer surface of the pouch-type secondary battery cell and the side folding portion formed in the pouch-type secondary battery cell; a clamping unit connected to the tape supply unit, for cutting the supplied tape, and clamping the cut tape; and a tape attaching unit connected to the tape-cutting clamping unit and attaching the cut tape to the outer surface and the side folding part of the pouch-type secondary battery cell.

The tape cutting and clamping unit may include: a tape clamping module for clamping the tape; and a tape cutting module for cutting the tape clamped to the tape clamping module.

The tape clamping module may include: a tape pickup unit gripping the tape to move the tape upward; and a tape pressing unit for pressing the tape with the tape attaching unit.

The tape pickup unit may include: a tape holding unit holding the tape; and a moving unit for the holding unit connected to the tape holding unit and configured to move the tape holding unit up/down.

The tape gripper includes: a base for the gripper connected to the moving part for the gripper; a gripper part rotatably coupled to the base part for the grip part and for gripping the tape by pressing the tape to the base part for the grip part by rotation; and a gripper rotating part supported by the gripper base part and connected to the gripper part to rotate the gripper part.

The tape pressing unit may include: an upper pressing unit having an upper moving bar moving in a direction approaching and spaced apart from the tape attaching unit; and a lower moving bar moving in a direction approaching and spaced apart from the tape attaching unit, and may include a lower pressing unit spaced apart from a lower region of the upper pressing unit.

The tape cutting module may include a knife unit contacting the tape to cut the tape; and a knife moving part connected to the knife part and moving the knife part relative to the tape.

The tape attachment unit may include: a side attachment part supporting the tape in a lateral direction of the pouch-type secondary battery cell so that the tape is attached to the side folding part of the pouch-type secondary battery cell; an upper surface attachment part disposed in an upper region of the side attachment part and having an upper attachment roller part for pressing the tape to the upper surface of the pouch-type secondary battery cell; and a lower surface attachment part disposed in a lower region of the side attachment part and having a lower attachment roller part for pressing the tape to the lower surface of the pouch-type secondary battery cell.

The side attachment portion may include: a movable body portion for side attachment that is movable in a direction approaching and spaced apart from the tape cut by the tape-cutting clamping unit; And it is connected to the moving body portion for side attachment, it may include a side attachment for moving the body for moving the side attachment.

The upper attachment part may include an upper attachment roller bracket to which the upper attachment roller part is rotatably coupled; an upper surface attachment moving part connected to the upper attachment roller bracket and moving the upper attachment roller up/down; and a movement guide for upper surface attachment coupled to the upper attachment roller bracket and guiding the movement of the upper attachment roller portion.

The lower attachment part may include a lower attachment roller bracket to which the lower attachment roller part is rotatably coupled; a lower surface attachment moving part connected to the lower attachment roller bracket and moving the lower attachment roller up/down; and a lower surface attachment movement guide part coupled to the lower attachment roller bracket and guiding the movement of the lower attachment roller part.

The tape supply unit may include: a frame unit for the supply unit; a drum part rotatably coupled to the frame part for the supply unit, on which the tape is wound; a support roller part for the supply unit that is rotatably coupled to the frame part for the supply unit and supports the tape; and a tension adjusting part supported by the frame for the supply unit and connected to the tape to adjust the tension of the tape.

The tension control unit may include: a dancer roller unit for a supply unit supporting the tape; And it is connected to the dancer roller for the supply unit, it may include a moving part for the dancer roller for relatively moving the dancer roller for the supply unit with respect to the support roller for the supply unit.

It may further include a stage unit for a pouch supporting the pouch-type secondary battery cell and moving the pouch-type secondary battery cell in a direction approaching and spaced apart from the tape attachment unit.

The stage unit for the pouch includes: a stage for clamping the pouch-type secondary battery cell; and a stage moving unit connected to the stage unit and moving the stage unit.

The tape is wound in a roll shape on the tape supply unit, and the long width of the stage corresponding to the long width of the pouch-type secondary battery cell is arranged in parallel with the width of the tape wound in the roll shape. tape attachment.

Embodiments of the present invention, a tape supply unit for supplying a tape, a tape cutting combined clamping unit for cutting the supplied tape and clamping the cut tape, and the cut tape to the outer surface of the pouch-type secondary battery cell and the pouch-type secondary By having a tape attaching unit attached to the side folding unit formed on the side of the battery cell, the side folding unit can be maintained in a folded state, thereby reducing the volume of the pouch-type secondary battery cell to prevent wastage of work space and power It is possible to prevent damage to the side folding part due to thermal expansion during application.

1 is a view showing a pouch-type secondary battery cell to which a tape is attached by a tape attaching device for a secondary battery according to an embodiment of the present invention.
FIG. 2 is a view showing a tape attaching device for a secondary battery for attaching a tape to the pouch-type secondary battery cell of FIG. 1 .
FIG. 3 is a view showing a rear surface of the tape supply unit of FIG. 1 .
FIG. 4 is a view showing the clamping unit and the tape attaching unit for cutting the tape of FIG. 1 .
FIG. 5 is an enlarged view of the tape pressing unit of FIG. 4 .
FIG. 6 is a view illustrating a state in which FIG. 2 is viewed from the right.
7 is an enlarged view of the moving part for side attachment of FIG. 6 .
FIG. 8 is an enlarged view of the moving part for attaching the upper surface and the moving part for attaching the lower surface of FIG. 6 .
FIG. 9 is a view showing the tape gripper of FIG. 4 .
FIG. 10 is a view showing a cross-section of FIG. 4 .
11 and 12 are operational state diagrams of the apparatus for attaching a tape for a secondary battery of FIG. 2 .
13 is a plan view of FIG. 2 .

In order to fully understand the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, reference should be made to the accompanying drawings illustrating preferred embodiments of the present invention and the contents described in the accompanying drawings.

Hereinafter, the present invention will be described in detail by describing preferred embodiments of the present invention with reference to the accompanying drawings. However, in describing the present invention, descriptions of known functions or configurations will be omitted in order to clarify the gist of the present invention.

1 is a view showing a pouch-type secondary battery cell to which a tape is attached by a tape attaching device for a secondary battery according to an embodiment of the present invention, and FIG. 2 is a secondary attaching a tape to the pouch-type secondary battery cell of FIG. It is a view showing a tape attaching device for a battery, FIG. 3 is a view showing the rear side of the tape supply unit of FIG. 1, and FIG. 4 is a view showing the clamping unit and tape attaching unit for cutting the tape of FIG. 1, FIG. 5 is an enlarged view of the tape pressing unit of FIG. 4 , FIG. 6 is a view showing a state viewed from the right side of FIG. 2 , FIG. 7 is an enlarged view showing the moving part for side attachment of FIG. 6 , and FIG. 8 is FIG. 6 It is an enlarged view showing the moving part for attaching the upper surface and the moving part for attaching the lower surface of is an operation state diagram of the tape attaching apparatus for a secondary battery of FIG. 2 , and FIG. 13 is a plan view of FIG. 2 .

In this embodiment, a pouch-type secondary battery cell (S) is used, and the pouch-type secondary battery cell (S) includes an electrode assembly (not shown), an electrode tab (not shown), an electrode lead (not shown), and a pouch type. and a case S1.

Although not shown in detail for the convenience of the drawing, the electrode laminate (not shown) is configured in a form in which one or more positive and one negative electrode plates are disposed with a separator interposed therebetween, and is accommodated in the pouch-type case S1.

The electrode tab (not shown) includes a positive electrode tab and a negative electrode tab, and is formed to protrude from the electrode stack (not shown), respectively. That is, the positive electrode tab is formed to protrude from the positive electrode plate of the electrode stack body (not shown), and the negative electrode tab is formed to protrude from the negative electrode plate of the electrode stack body (not shown).

An electrode lead (not shown) may be attached to an upper portion or a lower portion of the electrode tab. The material of the positive lead (not shown) and the negative lead (not shown) may be different from each other.

The pouch-type case S1 has a concave inner space, and an electrode stack (not shown) is accommodated in this inner space, and an electrolyte such as a liquid, solid, or gel type depending on the type of the pouch-type secondary battery cell (S). (not shown) is filled.

The pouch-type case S1 according to the present embodiment includes an upper sheet (not shown) and a lower sheet (not shown). A storage space in which the electrode stack (not shown) can be accommodated is formed in the lower sheet (not shown).

After the electrode laminate (not shown) is accommodated in the receiving space (not shown) of the lower sheet (not shown), the upper sheet (not shown) covers the lower sheet (not shown) to shield the electrode laminate (not shown). do. At this time, the upper sheet (not shown) and the lower sheet (not shown) are joined by thermal fusion or the like.

In the edge region of the pouch-type case S1, a side folding part P in which a heat-sealed upper sheet (not shown) and a lower sheet (not shown) are folded is formed.

As shown in FIGS. 1 and 12, the tape attaching device for a secondary battery according to the present embodiment attaches a tape to the upper and lower surfaces and the side folding part P of the pouch-type case S1, so that the side folding It is possible to keep the part (P) in a folded state, thereby reducing the volume of the pouch-type case (S1) to prevent waste of work space, and to prevent the side folding part (P) from being damaged by thermal expansion when power is applied can be prevented

The tape attachment device for a secondary battery according to the present embodiment that can provide such an effect includes a main frame (M), a tape supply unit 100, a clamping unit 200 for cutting a tape, and a tape attachment unit 300 and , and a stage unit 400 for a pouch.

The tape supply unit 100 supplies the tape. As shown in FIGS. 2 and 3, the tape supply unit 100 is rotatably coupled to the frame unit 110 for the supply unit coupled to the main frame M, and the frame unit 110 for the supply unit. The drum unit 120 on which the tape is wound, the drum rotating unit (not shown) coupled to the frame unit 110 for the supply unit and rotating the drum unit 120, and the frame unit 110 for the supply unit can be rotated. and a support roller 130 for a supply unit that is coupled and supports the tape, and a tension control unit 140 that is supported on the frame unit 110 for the supply unit and is connected to the tape to adjust the tension of the tape.

The drum part 120 is provided in a cylindrical shape, and is rotatably coupled to the frame part 110 for the supply unit. A tape is wound around the outer peripheral surface of the drum unit 120 in the form of a roll. The drum rotating unit (not shown) is coupled to the frame unit 110 for the supply unit and connected to the drum unit 120 to rotate the drum unit 120 .

The support roller unit 130 for the supply unit is rotatably coupled to the frame unit 110 for the supply unit. The support roller 130 for the supply unit supports the tape and guides the movement of the tape. A plurality of support rollers 130 for the supply unit according to the present embodiment are provided and are arranged to be spaced apart from each other.

The tension control unit 140 is supported by the frame unit 110 for the supply unit. The tension control unit 140 is connected to the tape to adjust the tension of the tape. As shown in FIGS. 2 and 3, the tension control unit 140 according to this embodiment is connected to the dancer roller unit 141 for the supply unit supporting the tape, and the dancer roller unit 141 for the supply unit. and a moving part 142 for the dancer roller for relatively moving the dancer roller part 141 for the supply unit with respect to the support roller part 130 for the supply unit.

The dancer roller unit 141 for the supply unit is formed in a circular roller shape. A tape is connected to the outer circumferential surface of the dancer roller unit 141 for the supply unit, and the dancer roller unit 141 for the supply unit supports the tape.

The moving unit 142 for the dancer roller is coupled to the moving block 142c for the dancer roller to which the dancer roller unit 141 for the supply unit is rotatably coupled, and the frame unit 110 for the supply unit and moves for the dancer roller A guide rail 142d for a dancer roller to which the block 142c is slidably coupled, a pressure cylinder body 142a for a dancer roller coupled to the frame portion 110 for a supply unit, and a pressure cylinder body for a dancer roller ( It is connected to the relative movement 142a) and includes a pressure cylinder rod (142b) for the dancer roller coupled to the moving block (142c) for the dancer roller.

The pressure cylinder rod 142b for the dancer roller is moved forward and backward by the operation of the pressure cylinder body 142a for the dancer roller, and accordingly, the dancer roller unit 141 for the supply unit is attached to the support roller unit 130 for the supply unit. The tension of the tape is adjusted by moving it relative to each other.

On the other hand, the clamping unit 200 for cutting the tape is supported on the main frame (M) and connected to the tape supply unit (100). The tape cutting and clamping unit 200 cuts the tape supplied from the tape supply unit 100 to a predetermined length and then clamps the cut tape. In this embodiment, the length of the cut tape may be adjusted by the clamping unit 200 for cutting the tape.

As shown in FIGS. 2 to 10, the clamping unit 200 for cutting the tape includes the tape clamping modules 210 and 220 for clamping the tape, and the tape clamping modules 210 and 220 for cutting the tape clamped. and a tape cutting module 230 .

The tape clamping modules 210 and 220 clamp the tape. The tape clamping modules 210 and 220 include a tape pickup unit 210 that grips the tape to move the tape upward, and a tape press unit 220 that presses the tape to the tape attaching unit 300 .

The tape pickup unit 210 grips the tape and moves the tape upward. As shown in FIGS. 2, 4 and 9, the tape pickup unit 210 according to the present embodiment includes a tape gripper 211 for gripping a tape, and a tape gripper 211 connected to the tape gripper. and a moving unit 216 for the holding unit for moving the holding unit 211 up/down.

The tape gripper 211 grips the tape. The tape gripping part 211 is rotatably coupled to the gripping part base 212 connected to the gripping part moving part 216 and the gripping part base 212 and holding the tape by rotation. It includes a gripper part 213 for gripping the tape by pressing with 212 , and a gripper rotating part 214 supported by the gripper base part 212 and connected to the gripper part 213 to rotate the gripper part 213 . do.

The base part 212 for the grip part is formed in a plate shape. The base part 212 for the holding part is connected to the moving part 216 for the holding part.

The gripper part 213 is rotatably coupled to the gripper base part 212 . The gripper portion 213 presses the tape to the base portion 212 for the gripper by rotation to grip the tape.

The gripper part 213 according to the present embodiment is provided in a plate shape, and a rotation center shaft 213a rotatably coupled to the gripper base part 212 is provided on a sidewall of the gripper part 213 .

The gripper portion 213 is disposed at an oblique angle to the gripper base portion 212 as shown in FIG. 9 . Accordingly, the lower end of the gripper portion 213 is disposed at a position closer to the gripper base 212 than the upper end of the gripper portion 213 . By rotation of the gripper part 213, the lower end of the gripper part 213 and the gripper base part 212 meet to grip the tape.

The gripper rotating part 214 is supported by the gripper base part 212 . The gripper rotating part 214 is connected to the gripper part 213 to rotate the gripper part 213 . The gripper rotating part 214 according to the present embodiment includes a gripper pressure cylinder body 214a rotatably coupled to a gripper base part, and a gripper pressure cylinder body 214a movably connected to the gripper part ( It includes a pressure cylinder rod 214b for a gripper rotatably coupled to 213).

The gripper part 213 is rotated as the pressure cylinder rod 214b for the gripper moves forward and backward by the operation of the pressure cylinder body 214a for the gripper.

The moving part 216 for the holding part is coupled to the main frame (M). A tape holding unit 211 is connected to the moving unit 216 for the holding unit. The moving unit 216 for the holding unit moves the tape holding unit 211 up/down. The length of the tape cut by the tape cutting module 230 varies according to the height at which the moving unit 216 for the holding unit raises the tape holding unit 211 holding the tape.

The moving unit 216 for the holding unit according to this embodiment includes a moving block 216a for the holding unit to which the base unit 212 for the holding unit is coupled, and a movement guide unit for the holding unit for guiding the movement of the moving block 216a for the holding unit. (not shown) and a moving driving unit 216b for the holding unit for moving the moving block 216a for the holding unit.

The moving driving part 216b for the holding part is connected to a moving nut (not shown) coupled to the moving block 216a for the holding part, a ball screw (not shown) meshed with the moving nut, and a ball screw (not shown). It includes a driving motor (not shown) for the holding part for rotating (not shown).

The tape pressing unit 220 presses the tape moved upward by the tape pickup unit 210 in the direction of the tape attaching unit 300 .

The tape pressing unit 220 according to this embodiment, as shown in FIGS. 2 to 12, has an upper portion having an upper moving bar (221a) that is moved in a direction approaching and spaced apart from the tape attaching unit 300. A lower pressing part ( 221 ) provided with a pressing part 221 and a lower moving bar 222a moving in a direction approaching and spaced apart from the tape attaching unit 300 , and disposed spaced apart from the lower region of the upper pressing part 221 ( 222).

As described above, the tape press unit 220 according to the present embodiment includes the upper press unit 221 and the lower press unit 222 that are independently driven, so that the tape holding unit 211 holds the tape at the lower part. After the pressing unit 222 presses the tape, the tape holding unit 211 releases the tape, and then the upper pressing unit 221 can press the tape, so that the tape holding unit 211 releases the tape. It is possible to prevent the tape from being dislodged from its original position.

The upper pressing unit 221 is supported by an upper moving bar 221a that moves in a direction approaching and spaced apart from an upper attaching roller 321 to be described later of the tape attaching unit 300, and the tape attaching unit 300. and upper bar moving parts 221b and 221c connected to the upper moving bar 221a to move the upper moving bar 221a.

The upper moving bar 221a is provided in the shape of a long circular rod. The upper bar moving parts 221b and 221c are supported by the tape attaching unit 300 and connected to the upper moving bar 221a. The upper bar moving parts 221b and 221c move the upper moving bar 221a. The upper bar moving parts 221b and 221c according to this embodiment are for an upper bar pressurized cylinder body 221b coupled to an upper attachment roller bracket part 322 to be described later of the tape attachment unit 300, and for the upper bar and a pressure cylinder rod (221c) for the upper bar connected to the pressure cylinder body (221b) to be relatively movable and coupled to the upper moving bar (221a).

The upper bar pressurizing cylinder rod 221c moves forward and backward by the operation of the upper bar pressurizing cylinder body 221b to move the upper moving bar 221a.

The lower pressing part 222 is disposed to be spaced apart from the lower region of the upper pressing part 221 . The lower pressing part 222 is a lower moving bar 222a that moves in a direction approaching and spaced apart from a lower attachment roller 331 to be described later of the tape attaching unit 300, and the tape attaching unit 300. Supported and connected to the lower moving bar (222a) is provided with lower bar moving parts (222b, 222c) for moving the lower moving bar (222a).

The lower moving bar 222a is provided in the shape of a long circular rod. The lower moving bar 222a presses the tape with the lower attachment roller 331 to prevent the tape from moving while the tape cutting module 230 cuts the tape.

The lower bar moving parts 222b and 222c are supported by the tape attaching unit 300 and connected to the lower moving bar 222a. These lower bar moving parts 222b and 222c move the lower moving bar 222a. The lower bar moving parts 222b and 222c according to this embodiment are for the lower bar pressurized cylinder body 222b coupled to the lower attachment roller bracket part 332 to be described later of the tape attachment unit 300, and for the lower bar It is connected to the pressure cylinder body (222b) to be relatively movable and includes a pressure cylinder rod (222c) for the lower bar coupled to the lower moving bar (222a).

The lower bar moving bar 222a is moved by moving the lower bar pressurizing cylinder rod 222c forward and backward by the operation of the lower bar pressurizing cylinder body 222b.

In addition, the tape attaching unit 300 according to this embodiment is connected to each of the upper attaching roller part 321 and the lower attaching roller part 331 to support the upper attaching roller part 321 and the lower attaching roller part 331 . A backup roller (H) is provided.

The tape cutting module 230 cuts the tape clamped by the tape clamping modules 210 and 220 . As shown in FIG. 10 , the tape cutting module 230 includes a knife part 231 that cuts the tape in contact with the tape, and a knife part 231 connected to the knife part 231 so that the knife part 231 is opposed to the tape. It includes a knife moving unit 232 for moving.

The knife part 231 is provided with a cutting blade that can cut the tape by being in contact with the tape.

The knife moving part 232 is connected to the knife part 231 . The knife moving part 232 moves the knife part 231 relative to the tape in the X-axis direction of FIG. 10 . \

The knife moving unit 232 according to this embodiment is connected to a moving block for a knife (not shown) to which the knife unit 231 is coupled and a moving block for a knife (not shown), and a moving block for a knife (not shown). It includes a knife movement guide unit (not shown) for guiding the movement, and a knife movement drive unit (not shown) connected to the knife movement block (not illustrated) to move the knife movement block (not illustrated). The moving driving unit (not shown) for a knife according to the present embodiment may be formed of a linear motor.

On the other hand, the stage unit 400 for the pouch is supported by the main frame (M). The stage unit 400 for a pouch is connected to the pouch-type secondary battery cell (S) to move the pouch-type secondary battery cell (S) in a direction approaching and spaced apart from the tape attachment unit 300 .

As shown in FIG. 2 , the stage unit 400 for a pouch according to the present embodiment includes a stage unit 410 for clamping the pouch-type secondary battery cell S, and a stage unit connected to the stage unit 410 and connected to the stage unit. and a stage moving unit 420 for moving the 410 .

A pouch-type secondary battery cell S is disposed on the upper surface of the stage 410 . The stage part 410 is provided with a clamping part 411 for the stage clamping the pouch-type secondary battery cell (S) to prevent movement of the pouch-type secondary battery cell (S). The clamping unit 411 for the stage is moved in the vertical direction to clamp the pouch-type secondary battery cell (S).

The long width of the stage part 410 corresponds to the long width of the pouch-type secondary battery cell (S). The long width of the stage unit 410 is arranged in parallel with the long width of the tape wound in a roll shape on the drum unit 120 as shown in FIG. 13 . This arrangement has the advantages of a smaller equipment footprint, less risk of foreign matter sticking to the tape, and a longer tape replacement cycle.

The stage moving unit 420 is supported by the main frame (M). The stage moving unit 420 is connected to the stage unit 410 to move the stage unit 410 in a direction (Y-axis direction in FIG. 2 ) approaching and spaced apart from the tape attaching unit 300 .

The stage moving unit 420 according to the present embodiment is connected to a moving block for a stage (not shown) to which the stage unit 410 is coupled, and a moving block for a stage (not shown), and a moving block for a stage (not shown). It includes a movement guide part for the stage (not shown) for guiding the movement of the stage, and a movement driving part 421 for the stage connected to the moving block for the stage (not shown) to move the moving block for the stage (not shown).

The moving driving unit 421 for the stage includes a moving nut (not shown) coupled to a moving block (not shown) for the stage, a ball screw (not shown) meshed with the moving nut (not shown), and a ball screw (not shown). ) and includes a driving motor 421a for a stage connected to the ball screw (not shown) to rotate.

On the other hand, the tape attachment unit 300 attaches the cut tape to the outer surface and the side folding part P of the pouch-type secondary battery cell (S).

The tape attaching unit 300 is, as shown in FIGS. 2 to 12 . A side attachment part 310 for supporting the tape in the lateral direction of the pouch-type secondary battery cell (S) so that the tape is attached to the side folding part (P) of the pouch-type secondary battery cell (S), and a side attachment part 310 is disposed in the upper region of the upper surface attachment part 320 having an upper attachment roller part 321 for pressing the tape to the upper surface of the pouch-type secondary battery cell (S), and in the lower region of the side attachment part 310 and a lower surface attachment part 330 having a lower attachment roller part 331 for pressing the tape to the lower surface of the pouch-type secondary battery cell (S).

The side attachment part 310 supports the tape in the lateral direction of the pouch-type secondary battery cell (S) so that the tape is attached to the side folding part (P) of the pouch-type secondary battery cell (S).

As shown in FIGS. 6, 7, and 10 to 12 , the side attachment part 310 according to this embodiment approaches and separates the tape cut by the clamping unit 200 for cutting and separating the tape. It includes a movable body part 311 for side attachment that is movable to the side, and a movable part 312 for side attachment that is connected to the movable body part 311 for side attachment and moves the movable body part 311 for side attachment.

The moving body part 311 for side attachment is cut by the clamping unit 200 for both cutting and cutting the tape, and is moved in a direction approaching and spaced apart from the tape clamped by the clamping unit 200 for both cutting and cutting the tape.

In this embodiment, the side attachment movable body 311 is provided in the shape of a long bar (extends long in the X-axis direction in FIG. 7). In the process of attaching the tape to the front end region (contacting the tape) of the moving body part 311 for side attachment, it is made of a hard polyurethane material that can be elastically deformed to fit the outline of the side folding part (P). A contact portion (not shown) may be coupled.

The moving part 312 for side attachment is supported on the main frame M and is connected to the moving body part 311 for side attachment to move the movable body part 311 for side attachment. The moving body 311 for side attachment is moved corresponding to the operation of the moving driving part 421 for the stage of the moving part 312 for side attachment.

That is, the moving driving unit 421 for the stage moves the stage unit 410 and attaches it to the tape on the side folding unit P of the pouch type secondary battery cell (S), and then continues the pouch type secondary battery cell (S). When moving, the side attachment moving part 312 retracts the side attachment moving body part 311 according to the moving speed of the pouch-type secondary battery cell (S).

As shown in Figs. 4 to 8, 11 and 12, the moving part 312 for side attachment according to the present embodiment is connected to the main frame M so as to be relatively movably attached, and the movable body part 311 for side attachment is connected to the main frame M. ), a side attachment guide rod (312a) coupled to the main frame (M), a side attachment pressure cylinder body (312b) coupled to the main frame (M), and a side attachment pressure cylinder body (312b) are connected to move relative to each other and are connected to the side attachment movable body It includes a pressure cylinder rod (312c) for side attachment coupled to the portion (311).

The guide rod for side attachment (312a) is connected to the main frame (M) to be relatively movable and coupled to the movable body part for side attachment 311 to guide the movement of the movable body part for side attachment (311).

By the operation of the pressure cylinder body for side attachment (312b), the side attachment pressure cylinder rod (312c) is moved forward and backward, and the movable body part for side attachment (311) is moved.

As shown in FIGS. 4 to 8, 11 and 12, the upper surface attachment part 320 includes an upper attachment roller part 321, an upper attachment roller bracket part 322, and an upper surface attachment moving part 323 and It includes a movement guide portion 324 for attachment to the upper surface.

The upper attachment roller part 321 is disposed in the upper region of the side attachment part 310 . The upper attachment roller 321 presses the tape to the upper surface of the pouch-type secondary battery cell (S). In this embodiment, the upper attachment roller 321 is provided in the shape of a long circular rod.

An upper attachment roller part 321 is rotatably coupled to the upper attachment roller bracket. In this embodiment, the upper attachment roller bracket is provided in a bent shape like a 'L'. One side of the upper attachment roller bracket is connected to the upper surface attachment moving part 323, and the upper attachment roller part 321 is rotatably coupled to the other side of the upper attachment roller bracket.

The upper surface attachment moving part 323 is supported on the main frame M and is connected to the upper attachment roller bracket part 322 . The upper surface attachment moving part 323 moves the upper attachment roller part 321 up/down (up/down).

The upper surface attachment moving part 323 is movably coupled to the upper attachment roller pressure cylinder body 323a coupled to the main frame M, and the upper attachment roller pressure cylinder body 323a to move relative to the upper attachment roller bracket. It includes a pressure cylinder rod (323b) for the upper attachment roller coupled to (322).

By the operation of the pressure cylinder body 323a for the upper attachment roller, the pressure cylinder rod 323b for the upper attachment roller moves forward and backward to move the upper attachment roller bracket 322 in the vertical direction.

The upper surface attachment movement guide part 324 is coupled to the upper attachment roller bracket part 322 . The upper surface attachment movement guide part 324 guides the movement of the upper attachment roller part 321 . The upper surface attachment movement guide part 324 according to the present embodiment is provided in a long circular shaft shape. The upper surface attachment movement guide part 324 is coupled to the main frame M and the guide block K having a guide hole (not shown) for the upper attachment roller through which the upper surface attachment movement guide part 324 passes is connected.

As the outer peripheral surface of the upper surface attachment movement guide part 324 is slidably connected to the upper attachment roller guide hole (not shown), the upper surface attachment movement guide part 324 moves in the vertical direction of the upper attachment roller bracket part 322 . can guide you.

As shown in FIGS. 4 to 8, 11 and 12, the lower attachment part 330 includes a lower attachment roller part 331, a lower attachment roller bracket part 332, and a lower surface attachment moving part 333 and It includes a movement guide portion 334 for attachment to the lower surface.

The lower attachment roller part 331 is disposed in the lower region of the side attachment part 310 . This lower attachment roller 331 presses the tape to the lower surface of the pouch-type secondary battery cell (S). In this embodiment, the lower attachment roller 331 is provided in the shape of a long circular rod.

A lower attachment roller part 331 is rotatably coupled to the lower attachment roller bracket. In this embodiment, the lower attachment roller bracket is provided in a bent shape like a 'L'. One side of the lower attachment roller bracket is connected to the lower attachment moving part 333 , and the lower attachment roller part 331 is rotatably coupled to the other side of the lower attachment roller bracket.

The lower surface attachment moving part 333 is supported on the main frame M and is connected to the lower attachment roller bracket 332 . This lower surface attachment moving part 333 moves the lower attachment roller part 331 up / down (up / down).

The lower attachment moving part 333 is movably coupled to the lower attachment roller pressure cylinder body 333a coupled to the main frame M, and the lower attachment roller pressure cylinder body 333a to move relative to the lower attachment roller bracket. (332) includes a pressure cylinder rod (333b) for the lower attachment roller to be coupled.

By the operation of the pressure cylinder body 333a for the lower attachment roller, the pressure cylinder rod 333b for the lower attachment roller moves forward and backward, and the lower attachment roller bracket 332 moves in the vertical direction.

The lower surface attachment movement guide part 334 is coupled to the lower attachment roller bracket part 332 . This lower surface attachment movement guide part 334 guides the movement of the lower attachment roller part 331 . The lower surface attachment movement guide part 334 according to the present embodiment is provided in a long circular shaft shape. This lower surface attachment movement guide part 334 passes through the guide hole for the lower attachment roller (not shown) formed in the guide block (K) described above.

The outer peripheral surface of the lower surface attachment movement guide part 334 is slidably connected to the guide hole for the lower attachment roller (not shown), so that the lower attachment movement guide part 334 moves in the vertical direction of the lower attachment roller bracket part 332 . can guide you.

As described above, the tape attaching apparatus for secondary batteries of this embodiment moves each of the upper attaching roller part 321 and the lower attaching roller part 331 in the vertical direction to the upper attaching roller part 321 and the lower attaching roller part ( 331) by being able to adjust the distance between the pouch-type secondary battery cells (S), even if the thickness of the pouch-type secondary battery cell (S) is changed in various ways by adjusting the distance between the upper attachment roller part 321 and the lower attachment roller part 331 to facilitate the tape can be attached.

In addition, the tape attachment device for a secondary battery according to the present embodiment is provided with an air spray nozzle unit 500 for spraying air to the tape. The air jet nozzle unit 500 of the present embodiment prevents the tape from being bent by jetting air to the tape.

Hereinafter, an operation of the tape attaching apparatus for a secondary battery according to the present embodiment will be described with reference to FIGS. 1 to 12 .

First, the tape pickup unit 210 descends to grip the distal end region of the tape supplied by the tape supply unit 100 , and then rises upward to move the tape upward.

Thereafter, the lower moving bar 222a is moved in the direction of the lower attachment roller part 331 to press the tape to the lower attachment roller part 331 to clamp the tape. Next, the knife part 231 is moved to cut the tape.

Thereafter, the tape pickup unit 210 rises to move the cut tape upward. At this time, the tape is pressed by the lower moving bar 222a and the lower attachment roller 331 . In order to move the tape pressed by the lower moving bar 222a and the lower attaching roller 331 upward, the lower attaching roller 331 may be rotated in the process of ascending the tape.

Next, the tape pickup unit 210 is moved upwards after releasing the tape to return to the original position.

Thereafter, the upper moving bar 221a is moved in the direction of the upper attachment roller 321 to press the upper end portion of the tape (refer to FIG. 11).

Next, the pouch-type secondary battery cell (S) is moved in the direction of the cut tape. By the movement of the pouch-type secondary battery cell (S), the side folding part (P) is first attached to the tape.

Even after being attached to the tape on the side folding part (P), the pouch-type secondary battery cell (S) continues to move, and the side-mounting movable body part (311) is moved together with the pouch-type secondary battery cell (S). By the movement of the pouch-type secondary battery cell (S), the upper attachment roller part 321 and the lower attachment roller part 331 may attach the tape to the upper surface and the lower surface of the pouch-type secondary battery cell (S). .

As described above, the tape attaching device for a secondary battery according to this embodiment includes a tape supply unit 100 for supplying a tape, a tape cutting combined clamping unit 200 for cutting the tape and clamping the cut tape, and the cut tape. By having the tape attachment unit 300 attached to the outer surface and the side folding part P of the pouch-type secondary battery cell (S), the side folding part (P) can be maintained in a folded state, and accordingly, the pouch-type secondary battery cell (S) By reducing the volume of the battery cell (S), it is possible to prevent waste of work space and to prevent damage to the side folding part (P) due to thermal expansion when power is applied.

Although the present embodiment has been described in detail with reference to the drawings above, the scope of the present embodiment is not limited to the drawings and description described above.

As such, the present invention is not limited to the described embodiments, and it is apparent to those skilled in the art that various modifications and variations can be made without departing from the spirit and scope of the present invention. Accordingly, it should be said that such modifications or variations are included in the claims of the present invention.

100: tape supply unit 110: frame portion for supply unit
120: drum unit 130: support roller unit for supply unit
140: tension control unit 141: dancer roller unit for supply unit
142: moving part for dancer roller 200: clamping unit for tape cutting
210: tape pickup unit 211: tape gripping unit
212: gripper base portion 213: gripper portion
214: gripper rotating part 216: moving part for gripping part
216a: moving block for holding part 220: tape pressing part
221: upper pressing part 221a: upper moving bar
222: lower pressing portion 222a: lower moving bar
230: tape cutting module 231: knife unit
232: knife moving unit 300: tape attachment unit
310: side attachment part 311: side attachment movable body part
312: moving part for side attachment 320: upper surface attachment part
321: upper attachment roller part 322: upper attachment roller bracket part
323: upper surface attachment moving part 324: upper surface attachment movement guide part
330: lower attachment part 331: lower attachment roller part
332: lower attachment roller bracket 333: moving part for lower surface attachment
334: moving guide unit 400 for attaching to the bottom: stage unit for pouch
410: stage unit 420: stage moving unit
S: Pouch-type secondary battery cell S1: Pouch-type case
P: side folding part

Claims (16)

a tape supply unit supplying a tape to be attached to the outer surface of the pouch-type secondary battery cell and the side folding part formed in the pouch-type secondary battery cell;
a clamping unit connected to the tape supply unit, for cutting the supplied tape, and clamping the cut tape; and
and a tape attaching unit connected to the clamping unit for cutting the tape and attaching the cut tape to the outer surface and the side folding part of the pouch-type secondary battery cell. According to claim 1,
The tape cutting combined clamping unit,
a tape clamping module for clamping the tape; and
and a tape cutting module for cutting the tape clamped to the tape clamping module. 3. The method of claim 2,
The tape clamping module,
a tape pickup unit gripping the tape to move the tape upward; and
A tape attaching device for a secondary battery comprising a tape pressing unit for pressing the tape to the tape attaching unit. 4. The method of claim 3,
The tape pickup unit,
a tape gripper for gripping the tape; and
A tape attaching device for a secondary battery connected to the tape gripper and comprising a gripper moving part for moving the tape gripper up/down. 5. The method of claim 4,
The tape gripper,
a base part for the grip part connected to the moving part for the grip part;
a gripper part rotatably coupled to the base part for the grip part and for gripping the tape by pressing the tape to the base part for the grip part by rotation; and
and a gripper rotating part supported by the gripper base part and connected to the gripper part and rotating the gripper part. 4. The method of claim 3,
The tape pressing unit,
an upper pressing unit having an upper moving bar moving in a direction to be approached and spaced from the tape attachment unit; and
A tape attachment device for a secondary battery comprising a lower moving bar moving in a direction approaching and spaced apart from the tape attaching unit, and comprising a lower pressing unit spaced apart from the lower region of the upper pressing unit. 3. The method of claim 2,
The tape cutting module,
a knife unit contacting the tape to cut the tape; and
A tape attaching device for a secondary battery connected to the knife unit and including a knife moving unit for moving the knife unit relative to the tape. According to claim 1,
The tape attaching unit,
a side attachment part for supporting the tape in a lateral direction of the pouch-type secondary battery cell so that the tape is attached to the side folding part of the pouch-type secondary battery cell;
an upper surface attachment part disposed in an upper region of the side attachment part and having an upper attachment roller part for pressing the tape to the upper surface of the pouch-type secondary battery cell; and
and a lower surface attachment part disposed in a lower region of the side attachment part and having a lower attachment roller part for pressing the tape to the lower surface of the pouch-type secondary battery cell. 9. The method of claim 8,
The side attachment part,
a side attachment movable body part movable in a direction approaching and spaced apart from the tape cut by the tape cutting and clamping unit; and
A tape attaching device for a secondary battery, which is connected to the side attachment movable body part, and includes a side attachment movable part for moving the side surface attachment movable body part. 9. The method of claim 8,
The upper surface attachment part,
an upper attachment roller bracket to which the upper attachment roller is rotatably coupled;
an upper surface attachment moving part connected to the upper attachment roller bracket and moving the upper attachment roller up/down; and
The tape attachment device for secondary batteries coupled to the upper attachment roller bracket portion, and further comprising an upper surface attachment movement guide for guiding the movement of the upper attachment roller portion. 9. The method of claim 8,
The lower surface attachment part,
a lower attachment roller bracket to which the lower attachment roller is rotatably coupled;
a lower surface attachment moving part connected to the lower attachment roller bracket and moving the lower attachment roller up/down; and
The tape attachment device for secondary batteries coupled to the lower attachment roller bracket and further comprising a lower surface attachment movement guide for guiding the movement of the lower attachment roller. According to claim 1,
The tape supply unit,
a frame part for the supply unit;
a drum part rotatably coupled to the frame part for the supply unit, on which the tape is wound;
a support roller part for the supply unit that is rotatably coupled to the frame part for the supply unit and supports the tape; and
The tape attachment device for a secondary battery is supported by the frame for the supply unit, and is connected to the tape to include a tension control unit for adjusting the tension of the tape. 13. The method of claim 12,
The tension control unit,
a dancer roller unit for a supply unit supporting the tape; and
Connected to the dancer roller for the supply unit, the secondary battery tape attachment device comprising a moving part for the dancer roller for moving the dancer roller for the supply unit relative to the support roller for the supply unit. According to claim 1,
Supporting the pouch-type secondary battery cell, the secondary battery tape attachment device further comprising a stage unit for moving the pouch-type secondary battery cell in a direction approaching and spaced apart from the tape attachment unit. 15. The method of claim 14,
The stage unit for the pouch,
a stage part for clamping the pouch-type secondary battery cell; and
The stage part is connected to the tape attachment device for a secondary battery including a stage moving part for moving the stage part. 16. The method of claim 15,
The tape is wound in a roll shape on the tape supply unit,
A tape attachment device for secondary batteries, characterized in that the long width of the stage corresponding to the long width of the pouch-type secondary battery cell is arranged in parallel with the width of the tape wound in the roll shape.

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