CN112271413A

CN112271413A - Platform area and platform area material feeding unit

Info

Publication number: CN112271413A
Application number: CN202010052808.XA
Authority: CN
Inventors: 朴相勳
Original assignee: Samsung SDI Co Ltd
Current assignee: Samsung SDI Co Ltd
Priority date: 2019-07-08
Filing date: 2020-01-17
Publication date: 2021-01-26
Anticipated expiration: 2040-01-17
Also published as: KR20210006204A; CN112271413B

Abstract

A platform belt and a platform belt feeding device are disclosed. According to the present disclosure, since the land tape is directly adhered to the land portion without punching the land tape to match the land tape with the electrode tab, the attachment convenience can be enhanced. In addition, since the land tape having a shape corresponding to the minimum area to which the insulating tape is to be applied is manufactured and supplied, a separate process step is not required, and the land tape can be universally used even when the secondary batteries have different shapes and sizes. According to the platform belt feeding device of the present disclosure, since the lower release paper is automatically removed and the upper release paper is easily removed when the platform belt is supplied, it is possible to enhance the attachment convenience.

Description

Platform area and platform area material feeding unit

This application claims priority and benefit of korean patent application No. 10-2019-0082215 filed by the korean intellectual property office at 7, 8, 2019, the entire contents of which are incorporated herein by reference.

Technical Field

Various embodiments of the present disclosure relate to a platform belt and a feeding device for a platform belt.

Background

Generally, an electronic device such as a notebook computer, a mini notebook computer, a netbook, a mobile computer, an Ultra Mobile Personal Computer (UMPC), or a portable multimedia player uses a battery pack as a portable power source, and the battery pack may have a plurality of battery cells connected in series and/or parallel. The battery pack may include a Protection Circuit Module (PCM) for protecting the battery cell from overcharge, overdischarge, or overcurrent. The protection circuit module may be accommodated in the case together with the battery cell.

An example of such a battery pack is disclosed in korean patent No. 10-1223732, which was registered on 11.1.2013.

The above information disclosed in this background section is only for enhancement of understanding of the background of the described technology and therefore it may contain information that does not constitute prior art that is already known in this country to a person of ordinary skill in the art.

Disclosure of Invention

Embodiments of the present disclosure provide a deck tape and a feeding device for the deck tape, which has enhanced attachment convenience and can be used for general purposes by improving the configuration of the deck tape for insulation between a secondary battery and a Protection Circuit Module (PCM).

These and other aspects and features of the present disclosure will be described in or be apparent from the following description of exemplary embodiments of the present disclosure.

According to an aspect of the present disclosure, in a land tape adhered to a land portion of a secondary battery, the land portion being produced by one side of a case being joined and having an electrode tab exposed from the land portion, the land tape may include: an insulating tape cut to have a length corresponding to the length of the stage part to be placed in the length direction of the stage part; a double-sided tape adhered to one surface of the insulating tape in a length direction; an upper release paper attached to one surface of the insulating tape with the double-sided adhesive tape adhered thereto; and a lower release paper attached to the other surface of the insulating tape, wherein the area to which the upper release paper is attached and the area to which the lower release paper is attached are not overlapped with each other.

The other surface of the insulating tape may be attached to the platform portion, and the double-sided adhesive tape may be disposed on a top surface of the platform portion.

A width of the insulating tape positioned perpendicular to a length direction of the land portion may be equal to a sum of a length of the exposed electrode tab, a width of the land portion including a length of a step portion, and a height ranging from a top surface of the electrode tab to a top surface of the case, the step portion being generated at a region where the land portion is formed.

The landing strip may further include a first bend line located longitudinally on the insulating strip in phantom and a second bend line spaced from the first bend line and located longitudinally on the insulating strip in phantom.

The first bending line may correspond to a bent portion a having a stepped portion, which is generated at a region where the electrode tab and the mesa portion are joined to each other, and the second bending line may correspond to a connection portion between the top surface of the mesa portion and the connection surface.

The double-sided adhesive tape may be disposed between the first bending line and the second bending line to be spaced apart from the bent portion of the insulating tape.

In view of the portion where the double-sided adhesive tape is placed, one side of the insulating tape may be wider than the other side.

The upper release paper may cover the double-sided adhesive tape and the second bending line, and may be sized to have an end portion extending outward from the insulating tape.

According to another aspect of the present disclosure, the platform belt feeding device may include: a roll supporting unit rotatably supporting a platform tape roll on which a platform tape is wound, the platform tape comprising an insulating tape, a double-sided adhesive tape attached to the insulating tape in a length direction, an upper release paper attached to one surface of the insulating tape, and a lower release paper attached to the other surface of the insulating tape; a release paper collecting unit rotatably installed in an unwinding direction of the platform belt and separating and collecting the lower release paper from the platform belt roll; a length adjusting unit rotatably installed in an unwinding direction of the platform belt to be spaced apart from the release paper collecting unit and pushing the platform belt into a length to be cut of the platform belt; a drive motor coupled to the release paper collecting unit and rotating the release paper collecting unit; and a cutter installed adjacent to the length adjustment unit and cutting the platform tape, wherein the platform tape roll is wound in a state in which an area to which the upper release paper is attached and an area to which the lower release paper is attached are not overlapped with each other.

The release paper collecting unit and the length adjusting unit may be in the form of a rotating roller.

The release paper collecting unit and the length adjusting unit may support the platform belt from below and advance the platform belt.

The platform belt feeding device may further include a belt supporting unit disposed between the cutter and the length adjusting unit and supporting the platform belt from below.

As described above, the platform tape according to the embodiments of the present disclosure is directly adhered to the platform part without punching the platform tape to match the platform tape with the electrode tab, thereby enhancing the attachment convenience.

In addition, according to the present disclosure, since the land tape having a shape corresponding to the minimum area to which the insulating tape is to be applied is manufactured and supplied, a separate process step is not required, and the land tape can be universally used even when the secondary batteries have different shapes and sizes.

In addition, according to the deck tape feeding device of the present disclosure, since the lower release paper is automatically removed and the upper release paper is easily removed when the deck tape is supplied, it is possible to enhance the attachment convenience.

That is, embodiments of the present disclosure provide a platform belt having enhanced attachment convenience and used for general purposes, and a feeding device for the platform belt.

Drawings

Fig. 1 is a perspective view of a general secondary battery.

Fig. 2 is a plan view of an insulating tape adhered to the secondary battery shown in fig. 1.

Fig. 3 is a sectional view of the insulating tape shown in fig. 2.

Fig. 4 is a perspective view illustrating an example configuration of the secondary battery shown in fig. 1.

Fig. 5 is a side view of the secondary battery shown in fig. 4.

Fig. 6 is a plan view comparatively showing an insulation tape and an adhesive region of the insulation tape according to an embodiment of the present disclosure.

Fig. 7 is an exploded perspective view illustrating a configuration of a platform belt according to an embodiment of the present disclosure.

Fig. 8 is a sectional view showing the configuration shown in fig. 7.

Fig. 9 is a plan view illustrating a top surface of the platform belt shown in fig. 8.

Fig. 10 is a plan view illustrating a bottom surface of the platform belt illustrated in fig. 8.

Fig. 11 is a schematic perspective view of a platform belt feed according to an embodiment of the present disclosure.

Fig. 12 is a schematic side view of the feeding device shown in fig. 11.

Detailed Description

Hereinafter, embodiments of the present disclosure will be described in detail. The subject matter of the present disclosure may, however, be embodied in many different forms and should not be construed as limited to the example (or exemplary) embodiments set forth herein. Rather, these example embodiments are provided so that this disclosure will be thorough and complete, and will convey aspects and features of the disclosure to those skilled in the art.

In addition, in the drawings, the size or thickness of various components may be exaggerated for clarity and conciseness. Like numbers refer to like elements throughout. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. In addition, it will be understood that when element a is referred to as being "connected" to element B, element a may be directly connected to element B, or an intermediate element C may be present therebetween, such that element a and element B are grounded to each other.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, components, and/or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, for example, a first member, a first element, a first region, a first layer and/or a first portion discussed below could be termed a second member, a second element, a second region, a second layer and/or a second portion without departing from the teachings of the present disclosure.

Spatially relative terms, such as "below … …," "below … …," "below," "above … …," "above," and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures for ease of description. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the exemplary term "below … …" can encompass both an orientation of above and below.

In describing the main components of the present disclosure, referring to fig. 1, the upper and lower sides are defined as an upward direction and a downward direction, respectively. In addition, a long side direction of the case is defined as a length direction, and a short side direction of the case is defined as a width direction.

Fig. 1 is a perspective view of a general secondary battery. The appearance of a general secondary battery is shown in fig. 1.

As shown in fig. 1, a general pouch-type secondary battery 10 includes an electrode assembly (not shown) accommodated in a case 12. The electrode tabs electrically connected to the electrode assembly are withdrawn from the case 12. A stage portion 14 having a tab withdrawing portion 14a is located at one side of the case 12, and the electrode tab is withdrawn from the tab withdrawing portion 14 a.

A Protection Circuit Module (PCM) (not shown) is mounted on the top surface of the platform part 14, and an insulating tape 30 serves to insulate the secondary battery 10 and the PCM from each other.

Fig. 2 is a plan view of an insulating tape adhered to the secondary battery shown in fig. 1. Fig. 3 is a sectional view of the insulating tape shown in fig. 2.

As shown in fig. 2 and 3, the insulating tape 30 is supplied in the form of a flat tape constructed by attaching a double-sided adhesive tape 50 to a tape made of an insulating material and then detachably attaching upper and

lower release papers

70 and 90 to the top and bottom surfaces of the insulating tape 30. Before mounting the PCM on the stage part 14, the upper and

lower release papers

70 and 90 are removed, the bottom surface of the insulating tape 30 is attached to the stage part 14, and then the upper release paper 70 is removed and the PCM is attached to the double-sided adhesive tape 50.

As shown in fig. 1, since the tab drawing portion 14a is provided in the platform portion 14, once the insulating tape 30 is adhered to the platform portion 14, a portion (which will be referred to as a punching region 32 hereinafter) corresponding to the tab drawing portion 14a needs to be removed by punching.

If the region corresponding to the tab drawing portion 14a is not punched, the insulating tape 30 may be wrinkled or may become weak, thereby deteriorating adhesiveness and deteriorating insulating performance. Therefore, as shown in fig. 2, the punched area 32 of the insulating tape 30 needs to be removed. In order to attach the insulating tape 30 to different types of secondary batteries, punched regions having different shapes are required, thereby reducing workability and increasing the case.

In addition, as shown in fig. 3, since the top and bottom surfaces of the insulating tape 30 are completely covered by the upper and

lower release papers

70 and 90, the upper and

lower release papers

70 and 90 may not be easily removed. In addition, during the removal of the upper and

lower release papers

70 and 90, the insulating tape 30 is highly likely to be damaged.

To solve these problems, the platform belt according to the embodiments of the present disclosure may be shaped as a general belt to be compatible with different types of secondary batteries. Hereinafter, the platform belt according to the present disclosure will be described in detail. In the following description, the term "land tape" is used to refer to a tape to be adhered to a land portion of a secondary battery, the tape including an insulating tape, a double-sided adhesive tape, and upper and lower release papers and in a state in which the release papers have not been released.

Fig. 4 is a perspective view illustrating an example configuration of the secondary battery shown in fig. 1. Fig. 5 is a side view of the secondary battery shown in fig. 4. Fig. 6 is a plan view comparatively showing an insulation tape and an adhesive region of the insulation tape according to an embodiment of the present disclosure.

The general secondary battery will be described in more detail first.

As shown in fig. 4 and 5, the pouch type secondary battery 100 includes a case 100, a stage part 130 disposed at one side of the case 110, and an electrode tab 150 exposed to the outside of the case 110 through the stage part 130, as described above.

The case 110 includes a top surface 112, a bottom surface 114, a pair of first side surfaces 116 in a length direction, and a pair of second side surfaces 118 in a width direction, which are integrated into a box-shaped case. A side second side surface 118a of the housing 110 is joined to establish a platform portion 130.

For simplicity, when one side of the platform portion 130 is defined as a front side, the second side surface 118 of the case 110 may be divided into a forward-facing second side surface 118a and a rearward-facing second side surface 118 b. The second side surface 118a facing forward abuts against the platform portion 130, wherein the platform portion 130 is established by bonding and bending the bag and then tightly connecting the bag with a connecting surface 134 which will be described later. The second side surface 118a facing forward is a surface that is adhered to the insulating tape 300 together with the land portion 130, which will be described in detail later.

The tab withdrawing part 132 is disposed between the coupled surfaces of the platform part 130, and the electrode tab 150 is exposed to the outside of the case 110 through the tab withdrawing part 132. As shown in fig. 5, the platform portion 130 is vertically bent from the top surface of the tab withdrawing portion 132 to have a connection surface 134 coupled to the second side surface 118 of the case 110.

When a component such as PCM, for example, is mounted, the electrode tab 150, the top surface of the tab withdrawing part 132, the connection surface 134, and the second side surface 118 in close contact with the connection surface 134 may be in close contact with the component such as PCM. Therefore, the insulating tape 300 (see fig. 6) serves to insulate between the secondary battery 100 and the PCM.

The tab drawing portion 132 and the electrode tab 150, and the connection surface 134 and the second side surface 118 are respectively brought into close contact and joined with each other, but a step is inevitably generated at their joint due to the difference in thickness.

As shown in fig. 5, stepped portions a, B are generated at points a and B, respectively. Point a is a joint portion between the tab drawing portion 132 and the electrode tab 150, and point B is a joint portion between the connection surface 134 and the frontward-facing second side surface 118 a. Due to the difference in thickness between the tab drawing part 132 and the electrode tab 150, and the connection surface 134 has a predetermined thickness, stepped portions a, B are generated at points a and B, respectively. Therefore, when the insulating tape 300 is attached to the stage part 130, the stage tape is preferably configured in consideration of such a step part.

As shown in fig. 6, the insulating tape 300 has a predetermined length and width and is cut to supply a length required by a platform tape feeder 800, which will be described later. The insulating tape 300 is adhered to the entire stage part 130 including the tab withdrawing part 132 and the electrode tab 150. Accordingly, the insulating tape 300 may be configured to have a shape and size sufficient to cover the platform part 130 and the electrode tab 150.

As shown in fig. 5 and 6, the width (H2) of the insulating tape 300 may be the sum (i.e., L1+ L2+ H1) of the length (L1) of the exposed electrode tab 150, the width (L2) of the plateau portion 130 including the length of the step portions a, b, and the height (H1) ranging from the top surface of the electrode tab 150 to the top surface 112 of the case 110, as shown in fig. 5. Or the width (H2) of the insulating tape 300 may be greater than the sum (L1+ L2+ H1) because the portion to be insulated needs to be sufficiently covered by the insulating tape 300 when the electrode tab 150 is unfolded or when a gap is generated.

In addition, the first bending line 310 and the second bending line 330 may be located on the insulating tape 300. In fig. 5, a first bending line 310 is a line corresponding to the point a, and a second bending line 330 is a line corresponding to an angle C (bent portion of the insulation tape when the insulation tape is attached) between the tab withdrawing part 132 and the connection surface 134.

The first bending line 310 and the second bending line 330 may be printed on the insulating tape 300, or may be provided by a dotted concave type cutout.

Since the double-sided adhesive tape 500 is used to adhere components (e.g., PCM), the double-sided adhesive tape 500 should be disposed on the top surface of the tab drawing part 132 in the platform part 130. For this, the first bending line 310 and the second bending line 330 guide the attachment position of the insulating tape 300. Double-sided adhesive tape 500 is placed between first bend line 310 and second bend line 330.

In view of the portion where the double-sided adhesive tape 500 is placed, one side of the insulating tape 300 is wider than the other side. A relatively wide side of the insulating tape 300 is defined as a first region 350, and a relatively narrow side of the insulating tape 300 is defined as a second region 370. The first region 350 is a portion disposed at the connection surface 134 and the frontward-facing second surface 118a, and the second region 370 is a portion disposed at the electrode tab 150.

In the insulating tape 300 having the above-described configuration, the double-sided adhesive tape 500 is attached between the first bending line 310 and the second bending line 330. Since the double-sided adhesive tape 500 is required for the attachment of the PCM, the double-sided adhesive tape 500 should be disposed on the top surface of the platform portion 130. Accordingly, the width of the insulating tape 300 and the positions of the first bending line 310 and the second bending line 330 may be determined in consideration of the configuration of the stage part 130 and the positions of the double-sided adhesive tape 500.

The above-described insulating tape 300 is manufactured in the form of a flat tape T having an upper release paper 600 and a lower release paper 700 attached thereto in a state in which a double-sided adhesive tape 500 is attached thereto. Then, the resultant tape is wound in the form of a roll (hereinafter, will be referred to as a platform tape roll 300a), and then supplied to a later process through a platform tape feeder 800 as needed.

Hereinafter, various components of the platform tape T other than the insulation tape 300 will be described in more detail.

Fig. 7 is an exploded perspective view illustrating a configuration of a platform belt according to an embodiment of the present disclosure. Fig. 8 is a sectional view showing the configuration shown in fig. 7.

Referring to fig. 8, the platform tape T according to the embodiment of the present disclosure is configured such that the double-sided adhesive tape 500 is attached to the insulating tape 300, and the upper and

lower release papers

600 and 700 are attached thereto.

As shown in fig. 6 to 8, the double-sided adhesive tape 500 is attached to the insulating tape 300 in a length direction of the insulating tape 300 and has a length corresponding to the length of the insulating tape 300. Specifically, the double-sided adhesive tape 500 is attached to one surface of the insulating tape 300 in a length direction of the insulating tape 300.

More specifically, the double-sided adhesive tape 500 is disposed between the first bending line 310 and the second bending line 330 to be spaced apart from the first bending line 310 and the second bending line 330 by preset distances L3 and L4, respectively. The preset distances L3 and L4 may be determined to be in a range between 0.1mm and 2mm (preferably, between 0.1mm and 1 mm).

Because the insulating tape 300 is bent at the point a and the point B shown in fig. 5 when the platform part 130 is attached, the double-sided adhesive tape 500 is spaced apart from the first bending line 310 and the second bending line 330 by the distances L3 and L4, respectively.

Referring again to fig. 5, since the electrode tab 150 is withdrawn between the coupling surfaces of the platform part 130, a stepped portion a between the top surface of the electrode tab 150 and the top surface of the tab withdrawing part 132 is generated at a point a. In addition, the insulating tape 300 is bent at an intersection point C ' of the dummy line a ' as an extension of the top surface of the tab drawing portion 132 and the dummy line B ' as an extension of the connection surface 134.

Depending on the manufacturing process of the platform part 130, the connection surface 134 may be connected to the tab withdrawing part 132 so as to have a streamlined shape like a shape of a corner C, or so as to intersect the tab withdrawing part 132 like a shape of a point C'. In the former case, the connection portion of the connection surface 134 and the tab drawing portion 132 may have a predetermined width. Here, the width of the angle C refers to the width of the range from the starting point to the ending point of the cross section generated when the dummy lines a 'and B' meet the streamline angle C.

The double-sided adhesive tape 500 is disposed to be spaced apart from the corner C when the connection surface 134 and the tab withdrawing portion 132 are connected to each other in a streamlined manner, compared to when the connection surface 134 and the tab withdrawing portion 132 are connected to each other so as to intersect each other. The double-sided adhesive tape 500 may be disposed adjacent to the point C' when the connection surface 134 intersects with the tab withdrawing portion 132, compared to when the connection surface 134 and the tab withdrawing portion 132 are connected to each other in a streamlined manner. For this, the width of the double-sided adhesive tape 500 is adjusted.

If the double-sided adhesive tape 500 overlaps the bent portion of the insulating tape 300, the overlapped portion may become thick or may have a rough surface. To avoid such a problem, as described above, the width of the double-sided adhesive tape 500 is determined in consideration of the shapes of the point C and the point C' corresponding to the bent portion. For example, the double-sided adhesive tape 500 is disposed on the tab drawing part 132 and has a width determined so as not to overlap the bent portion of the insulating tape 300.

Before the upper and

lower release papers

600 and 700 are attached, when the insulating tape 300 is wound to provide the platform tape roll 300a, the top and bottom surfaces of the insulating tape 300 should not be stuck to each other. As shown in fig. 7 and 8, the upper release paper 600 is attached to the top surface of the insulating tape 300, and the lower release paper 700 is attached to the bottom surface of the insulating tape 300.

Fig. 9 is a plan view illustrating a top surface of the platform belt shown in fig. 8. Fig. 10 is a plan view illustrating a bottom surface of the platform belt illustrated in fig. 8.

As shown in fig. 8 and 9, the upper release paper 600 completely covers the double-sided adhesive tape 500 and the first region 350, and has a width sufficient to be partially exposed to the outside of the first region 350. In order to allow an operator to separate and release the upper release paper 600 from the insulating tape 300 with the insulating tape 300 attached to the platform portion 130, the size of the upper release paper 600 is preferably larger than that of the insulating tape 300. The first region 350 of the insulating tape 300 is disposed at one side of the connection surface 134 shown in fig. 6. Accordingly, if the upper release paper 600 has as many widths as the width protruding with respect to the first region 350 of the insulation tape 300 or as many widths as the width protruding upward with respect to the second side surface 118 of the case 110 when the insulation tape 300 is adhered to the stage part 130, the operator may easily remove the upper release paper 600.

However, the second region 370 of the top surface of the insulating tape 300 may not be covered by the upper release paper 600. Even if the second region 370 is not covered, the top and bottom surfaces of the insulating tape 300 may be prevented from sticking to each other when the insulating tape 300 is wound by providing the lower release paper 700. Therefore, in order to allow the insulating tape 300 to be easily attached and in order to allow the upper release paper 600 to be easily removed, the upper release paper 600 has a size sufficient to cover the remaining portion of the insulating tape 300 except for the second region 370 and to protrude to the outside of the insulating tape 300 by a preset width.

Referring to fig. 8, the protruding width L5 of the upper release paper 600 protruding to the outside of the insulating tape 300 may be set in the range of 3mm to 5mm, which is determined in consideration of the average size of the operator's hand. The lower limit of the hand size (i.e., 3mm) corresponds to the minimum width by which the operator can grasp the upper release paper 600 by hand to tear off the upper release paper 600. Since the upper release paper 600 has a predetermined thickness, the protrusion of the upper release paper 600 may become loose when the upper release paper 600 protrudes by a predetermined length with respect to the insulating tape 300, thereby allowing an operator to easily remove the upper release paper 600 by grasping the protrusion.

However, if the protrusion width L5 is greater than or equal to 5mm, the upper release paper 600 may descend toward the case 110 due to its own weight in a state where the insulating tape 300 is attached, so that the protrusion is brought into close contact with the top surface 112 of the case 110, making it difficult for an operator to grasp the protrusion. Therefore, the projecting width L5 of the upper release paper 600 is appropriately set within the range between 3mm and 5 mm.

As shown in fig. 8 and 10, the lower release paper 700 is attached to the bottom surface of the insulating tape 300 to cover the portion of the insulating tape 300 not covered by the upper release paper 600. For example, the width of the lower release paper 700 may substantially correspond to the width of the second region 370.

When the platform tape roll 300a is manufactured, the lower release paper 700 is wound in a state where it is attached to the insulating tape 300, and when the lower release paper 700 is unwound from the platform tape roll 300a, the release paper 700 is detached from the insulating tape 300. The lower release paper 700 is automatically removed from the platform belt feeder 800.

Hereinafter, the platform belt feeding device 800 will be described with reference to fig. 11 and 12. In the following description, the deck belt from which the paper is removed to be released will be referred to as a deck belt for the sake of brevity.

Fig. 11 is a schematic perspective view of a platform belt feed according to an embodiment of the present disclosure. Fig. 12 is a schematic side view of the feeding device shown in fig. 11.

As shown in fig. 11 and 12, the platform tape feeding apparatus 800 includes a tape supporting unit 810 supporting the platform tape roll 300a, a release paper collecting unit 820 collecting the lower release paper 700 separated from the platform tape roll 300a, a bottom supporting unit (or called a length adjusting unit) 830 for supporting the insulation tape 300 having the upper release paper 600 attached thereto, a driving motor 840 for driving the bottom supporting unit 830 and the release paper collecting unit 820, a tape supporting unit 850 supporting the insulation tape 300 when cutting the insulation tape 300, and a cutter 860 cutting the insulation tape 300. Although not shown, a cutter driver for driving the cutter 860 may be separately provided.

The roll supporting unit 810 is a cylindrical rotating rod that rotatably supports the platform tape roll 300 a. When the lower release paper 700 is removed by the release paper collecting unit 820, the platform tape roll 300a is rotated and unwound. Accordingly, the roll supporting unit 810 may be provided in a free roll type without a separate driver.

The release paper collecting unit 820 is installed below the insulating tape 300 to be disposed at one side where the platform tape roll 300a is unwound. The release paper collecting unit 820 may be shaped like a rotating roller rotated by a driving motor 840. When one end of the lower release paper 700 is fixed to one side of the outer circumferential surface of the release paper collection unit 820, the release paper collection unit 820 rotates to wind the lower release paper 700, thereby releasing the lower release paper 700 from the platform belt to collect the lower release paper 700. Since the release paper 700 is drawn by the release paper collecting unit 820 while rotating, the insulating tape 300 may be automatically advanced toward the cutter 860, and the platform tape roll 300a may be unwound. Here, the lower release paper 700 is collected by the release paper collecting unit 820, while the upper release paper 600 remains attached to the insulating tape 300.

Since the release paper collecting unit 820 is driven by the driving motor 840, advancing the insulating tape 300 as much as possible is controlled by adjusting the length of the lower release paper 700 to be cut.

The bottom support unit 830 supports the insulating tape 300 from below to prevent the insulating tape 300 from drooping when the insulating tape 300 advances toward the cutter 860. The bottom support unit 830 may be installed to be spaced apart from the release paper collecting unit 820 by a predetermined distance and adjacent to the belt support unit 850.

The bottom support unit 830 may be provided in a free-rolling type without a separate driver. Since the insulation tape 300 can be advanced toward the cutter 860 when the release paper collecting unit 820 rotates, it may not be necessary to provide a separate driver in the bottom supporting unit 830.

In addition, the bottom supporting unit 830 contacts the lower side of the insulating tape 300 having the adhesive surface thereof exposed by removing the lower release paper 700, thereby supporting the insulating tape 300. Accordingly, the bottom supporting unit 830 may be made of a material (e.g., teflon) that is not adhesive with respect to the adhesive surface. The bottom supporting unit 830 may be made of a material having no adhesion to the adhesion surface in a portion or the whole of the outer circumferential surface contacting the insulating tape 300.

Meanwhile, a plurality of protrusions may be provided on the outer circumferential surface of the bottom support unit 830 to reduce a contact area with the insulating tape 300, thereby preventing the bottom support unit 830 from sticking to the insulating tape 300.

The tape supporting unit 850 is installed adjacent to the bottom supporting unit 830 and supports the insulating tape 300 from below. The tape supporting unit 850 has a tip end parallel to the insulating tape 300. The cutter 860 is disposed adjacent to a front side of the tape supporting unit 850 in the transfer direction of the insulating tape 300.

The cutter 860 cuts the insulating tape 300 and is installed at an upper side of the insulating tape 300 to be able to ascend and descend. The cutter 860 is raised or lowered by a separate driver (e.g., a hydraulic cylinder). If the insulating tape 300 is advanced as much as the length set by the bottom supporting unit 830, the cutter 860 operates to cut the insulating tape 300.

The cutter 860 may be operated to cut the insulation tape 300 by a preset length according to the transfer time, or may be set to be operable when the insulation tape 300 has a length equal to the preset length by a separate sensor.

While the foregoing embodiments have been described in order to practice the platform belt and feed device therefor of the present disclosure, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims.

Description of the reference numerals

100: secondary electrode 110: shell body

130: the land portion 150: electrode lug

300: the insulating tape 310: first bending line

330: second bend line 350: first region

370: second region 500: double-sided adhesive tape

600: upper release paper 700: lower release paper

800: platform belt feeding device

810: the roll supporting unit 820: release paper collecting unit

830: bottom support unit 840: driving motor

850: belt supporting unit 860: cutter

Claims

1. A land tape adhered to a land portion of a secondary battery, the land portion being produced by bonding one sides of a case and having an electrode tab exposed from the land portion, the land tape comprising:

an insulating tape cut to have a length corresponding to the length of the stage part to be placed in the length direction of the stage part;

a double-sided tape adhered to one surface of the insulating tape in a length direction;

an upper release paper attached to one surface of the insulating tape with the double-sided adhesive tape adhered thereto; and

a lower release paper, attached to the other surface of the insulating tape,

wherein the area to which the upper release paper is attached and the area to which the lower release paper is attached are not overlapped with each other.

2. The platform tape of claim 1, wherein the other surface of the insulating tape is attached to the platform portion, and the double-sided adhesive tape is disposed on a top surface of the platform portion.

3. The plateau tape of claim 2, wherein a width of the insulating tape, which is positioned perpendicular to a length direction of the plateau portion, is equal to a sum of a length of the exposed electrode tab, a width of the plateau portion including a length of a step portion, which is generated at a region where the plateau portion is formed, and a height ranging from a top surface of the electrode tab to a top surface of the case.

4. The landing strip of claim 3, further comprising a first bend line located longitudinally on the insulating strip in phantom and a second bend line spaced from the first bend line and located longitudinally on the insulating strip in phantom.

5. The platform band according to claim 4, wherein the first bending line corresponds to a bending portion having a stepped portion, which is generated at a region where the electrode tab and the platform portion are joined to each other, and the second bending line corresponds to a connection portion between a top surface of the platform portion and a connection surface of the platform portion, and wherein the connection surface of the platform portion is a surface of the platform portion which is bonded to the case.

6. The landing tape of claim 5, wherein double-sided adhesive tape is disposed between the first bend line and the second bend line to be spaced apart from the curved portion of the insulating tape.

7. The platform tape according to claim 6, wherein one side of the insulating tape is wider than the other side in view of the portion where the double-sided adhesive tape is placed.

8. The landing tape of claim 6, wherein the upper release paper covers the double-sided adhesive tape and the second bend line and is sized to have an end extending outwardly from the insulating tape.

9. A platform belt feed comprising:

a roll supporting unit rotatably supporting a platform tape roll on which a platform tape is wound, the platform tape comprising an insulating tape, a double-sided adhesive tape attached to the insulating tape in a length direction, an upper release paper attached to one surface of the insulating tape, and a lower release paper attached to the other surface of the insulating tape;

a release paper collecting unit rotatably installed in an unwinding direction of the platform belt and separating and collecting the lower release paper from the platform belt roll;

a length adjusting unit rotatably installed in an unwinding direction of the platform belt to be spaced apart from the release paper collecting unit and pushing the platform belt into a length to be cut of the platform belt;

a drive motor coupled to the release paper collecting unit and rotating the release paper collecting unit; and

and a cutter installed adjacent to the length adjustment unit and cutting the platform tape, wherein the platform tape roll is wound in a state in which an area to which the upper release paper is attached and an area to which the lower release paper is attached are not overlapped with each other.

10. The flat belt feeding device of claim 9, wherein the release paper collecting unit and the length adjusting unit are in the form of rotating rollers.

11. The platform belt feeding device according to claim 9, wherein the release paper collecting unit and the length adjusting unit support and advance the platform belt from below.

12. The platform belt feeding device of claim 9, further comprising a belt supporting unit disposed between the cutter and the length adjusting unit and supporting the platform belt from below.