Tape supply unit, apparatus for manufacturing pouch for secondary battery using same, and method for manufacturing pouch for secondary battery using same

Abstract

The present invention relates to a tape supply unit, an apparatus for manufacturing a pouch for a secondary battery using same, and a method for manufacturing a pouch for a secondary battery using same and, more specifically, to a tape supply unit capable of simplifying the structure and manufacturing process and improving process efficiency and productivity, and an apparatus for manufacturing a pouch for a secondary battery using same, and a method for manufacturing a pouch for a secondary battery using same. The tape supply unit according to the present invention is configured to supply an adhesive tape for attaching a sealing portion to a pouch body accommodating an electrode assembly therein, and may comprise: a tape material supply unit that supplies a tape material including the adhesive tape and a release sheet to which the adhesive tape is attached; and a vacuum suction unit that moves the release sheet to the sealing portion while maintaining the release sheet in a vacuum-suctioned state, thereby attaching the adhesive tape to the sealing portion.

Description

Tape supply unit, a secondary battery pouch manufacturing device using the same, and a secondary battery pouch manufacturing method using the same

[0001] Cross-citation with related applications

[0002] This application claims the benefit of priority based on Korean Patent Application No. 10-2024-0188422 filed on December 17, 2024, and all contents disclosed in the document of said Korean Patent Application are incorporated herein as part of this specification.

[0003] Technology field

[0004] The present invention relates to a tape supply unit, a secondary battery pouch manufacturing apparatus using the same, and a secondary battery pouch manufacturing method using the same. Specifically, it relates to a tape supply unit, a secondary battery pouch manufacturing apparatus using the same, and a secondary battery pouch manufacturing method using the same, which can simplify the structure and manufacturing process and improve process efficiency and productivity.

[0005]

[0006] Generally, types of secondary batteries include nickel-cadmium batteries, nickel-hydrogen batteries, lithium-ion batteries, and lithium-ion polymer batteries. These secondary batteries are used not only in small products such as digital cameras, P-DVDs, MP3 players, mobile phones, PDAs, portable game devices, power tools, and E-bikes, but also in large products requiring high output such as electric vehicles and hybrid vehicles, as well as in power storage devices and backup power storage devices that store surplus generated power or renewable energy.

[0007] To manufacture a secondary battery, first, an electrode active material slurry is applied to a positive electrode current collector and a negative electrode current collector to produce a positive electrode and a negative electrode, and these are stacked on both sides of a separator to form an electrode assembly of a predetermined shape. Then, the electrode assembly is placed in a battery case, an electrolyte is injected, and then the case is sealed.

[0008] Secondary batteries can be classified into pouch type and can type, etc., depending on the material of the battery case that accommodates the electrode assembly.

[0009] Among these, the pouch type is configured to accommodate an electrode assembly in a pouch made of a flexible polymer material.

[0010] The electrode assembly is formed such that the positive and negative electrodes are wound or stacked in one direction with a separator in between, and the pouch can be provided by bonding a lower sheet and an upper sheet that define a receiving space to accommodate the electrode assembly inside in a cooperative manner.

[0011] Meanwhile, the pouch can be manufactured by joining the side portions (edges) of the lower sheet and the upper sheet, and as the side portions of the lower sheet and the upper sheet come into contact, a sealing portion is formed on the side (edge ​​side) of the pouch.

[0012] However, conventionally, since the sealing portion is formed on the side of the pouch, additional space must be secured to place the sealing portion, which reduces space utilization and design freedom, and makes it difficult to maximize the volumetric efficiency or volumetric energy density of the secondary battery.

[0013] Accordingly, a method has been proposed in which the sealing portion of the pouch is folded to minimize the dead volume occupied by the sealing portion of the pouch, and then the folded sealing portion is fixed to the pouch using an adhesive (e.g., double-sided tape).

[0014] However, conventionally, since the folding and bonding processes of the sealing portion of the pouch are performed individually by separate folding and bonding devices, there are problems such as increased complexity in the structure and manufacturing process, reduced space utilization and design freedom, as well as decreased process efficiency and productivity.

[0015] Accordingly, various studies have recently been conducted to simplify the folding and bonding processes of the pouch sealing section and to improve space utilization and design freedom; however, these efforts are still insufficient, and further development is required.

[0016]

[0017] The present invention has been devised to solve the above-mentioned problems, and the objective of the present invention is to provide a tape supply unit capable of improving space utilization and design freedom by minimizing the space occupied by the sealing part, a secondary battery pouch manufacturing apparatus using the same, and a manufacturing method.

[0018] In addition, the problem that the present invention aims to solve is to provide a tape supply unit capable of reducing the amount of adhesive tape used and minimizing incorrect attachment of the adhesive tape, an apparatus for manufacturing a pouch for a secondary battery using the same, and a method for manufacturing.

[0019] In addition, the problem that the present invention aims to solve is to provide a tape supply unit capable of simplifying the folding and bonding processes for the sealing portion of a pouch and improving space utilization and design freedom, an apparatus for manufacturing a pouch for a secondary battery using the same, and a manufacturing method.

[0020] In addition, the problem that the present invention aims to solve is to provide a tape supply unit capable of standardizing the size and shape of a pouch and shortening the manufacturing time of a pouch, a secondary battery pouch manufacturing apparatus using the same, and a manufacturing method.

[0021] In addition, the problem that the present invention aims to solve is to provide a tape supply unit capable of improving the folding and adhesive uniformity of the sealing portion and enhancing safety and reliability, an apparatus for manufacturing a pouch for a secondary battery using the same, and a method for manufacturing.

[0022]

[0023] To solve the above-mentioned problem, a tape supply unit according to a first embodiment of the present invention may include a tape supply unit for supplying an adhesive tape to attach a sealing portion to a pouch body that accommodates an electrode assembly inside, a tape material supply unit for supplying a tape material including the adhesive tape and a release sheet to which the adhesive tape is attached, and a vacuum suction unit for moving the release sheet to the sealing portion while vacuum suctioning to attach the adhesive tape to the sealing portion.

[0024] The adhesive tape is attached to one side of the release sheet, and the vacuum suction part can vacuum suction the other side of the release sheet.

[0025] The above tape material supply unit may include a supply roll on which the tape material is wound and an unwinding gripper that moves while gripping the end of the tape material wound on the supply roll to unwind the tape material.

[0026] The above tape material supply unit may further include a cutter that cuts the unwound tape material and separates it from the supply roll while the vacuum suction unit vacuum-suctions the release sheet.

[0027] One side of the above-mentioned release sheet is divided into a first area to which the adhesive tape is attached and a second area which is the remaining area of ​​the first area, and the cutter can cut the second area.

[0028] One side of the adhesive tape is attached to the sealing portion, and the other side of the adhesive tape can be attached to one side of the release sheet.

[0029] A tape supply unit according to a first embodiment of the present invention may further include a separation gripper for separating a release sheet attached to the other side of the adhesive tape from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

[0030] One side of the release sheet is divided into a first area to which the adhesive tape is attached and a second area which is the remaining area of ​​the first area, and the separation gripper moves while gripping the second area and the other side of the release sheet to separate the release sheet from the adhesive tape.

[0031] When the vacuum adsorption unit vacuum adsorbs the release sheet, the vacuum adsorption unit may be arranged to extend in a direction parallel to the length direction of the release sheet.

[0032] The vacuum adsorption unit may include a plurality of adsorption pads that are spaced apart at predetermined intervals along a direction parallel to the length direction of the release sheet and apply vacuum pressure to the release sheet.

[0033] When the above adhesive tape is attached to the sealing portion, the application of the vacuum pressure to the release sheet can be released.

[0034] To solve the above-mentioned problem, a secondary battery pouch manufacturing device according to a second embodiment of the present invention is a device for manufacturing a secondary battery pouch comprising a pouch body that accommodates an electrode assembly inside and a sealing portion disposed in the pouch body, wherein the device comprises a tape supply unit that supplies an adhesive tape for attaching the sealing portion to the pouch body, and a pressure unit that presses the sealing portion to attach the other side of the adhesive tape to the pouch body while one side of the adhesive tape is attached to the sealing portion by the tape supply unit, and the tape supply unit may include a tape material supply unit that supplies a tape material comprising the adhesive tape and a release sheet to which the adhesive tape is attached, and a vacuum suction unit that moves the release sheet to the sealing portion while vacuum suctioning to attach the adhesive tape to the sealing portion.

[0035] A secondary battery pouch manufacturing device according to a second embodiment of the present invention may further include a separation gripper for separating a release sheet attached to the other side of the adhesive tape from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

[0036] The above-mentioned pressure member can, with one side of the adhesive tape attached to the sealing member, fold the sealing member so that the other side of the adhesive tape faces the pouch body, and then press the sealing member against the pouch body so that the other side of the adhesive tape is attached to the pouch body.

[0037] To solve the above-mentioned problem, a method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention is a method for manufacturing a pouch for a secondary battery comprising a pouch body that accommodates an electrode assembly inside and a sealing portion disposed on the pouch body, and may include a tape material supply step of supplying a tape material comprising an adhesive tape and a release sheet having the adhesive tape attached to one side thereof, and an adhesive tape transfer step of moving a vacuum suction portion to the sealing portion while vacuum suctioning the other side of the release sheet, thereby attaching one side of the adhesive tape to the sealing portion.

[0038] A method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention may further include a step of attaching the other side of an adhesive tape to the pouch body by pressing the sealing portion while one side of the adhesive tape is attached to the sealing portion.

[0039] The above tape material supply step may include a tape material unwinding step for unwinding the wound tape material, a release sheet adsorption step in which the vacuum adsorption part vacuum adsorbs the other side of the release sheet, and a release sheet cutting step in which the release sheet is cut while the other side of the release sheet is vacuum adsorbed.

[0040] The above adhesive tape transfer step may include an adhesive tape one-sided attachment step in which the vacuum suction part vacuum-suctions the other side of the release sheet and transfers it to the sealing part to attach one side of the adhesive tape to the sealing part, and a vacuum pressure release step in which the vacuum pressure applied to the other side of the release sheet is released.

[0041] The above adhesive tape transfer step may further include a release sheet separation step of separating the release sheet from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

[0042]

[0043] The tape supply unit according to the present invention, the secondary battery pouch manufacturing apparatus and manufacturing method using the same, have the effect of improving space utilization and design freedom by minimizing the space occupied by the sealing part.

[0044] In addition, the present invention has the effect of reducing the amount of adhesive tape used and minimizing the incorrect attachment of the adhesive tape.

[0045] In addition, the present invention has the effect of simplifying the folding and bonding processes for the sealing portion of a pouch, and improving space utilization and design freedom.

[0046] In addition, the present invention has the effect of standardizing the size and shape of the pouch and shortening the manufacturing time of the pouch.

[0047] In addition, the present invention has the effect of improving the folding and adhesive uniformity of the sealing part, and enhancing safety and reliability.

[0048]

[0049] FIG. 1 is a drawing showing a tape material of a tape supply unit according to a first embodiment of the present invention.

[0050] FIG. 2 is a drawing showing one side of a release sheet of a tape supply unit according to a first embodiment of the present invention.

[0051] FIG. 3 is a drawing showing the unwinding gripper of a tape supply unit according to the first embodiment of the present invention unwinding a tape material.

[0052] FIG. 4 is a diagram showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention descending and approaching a release sheet.

[0053] FIG. 5 is a drawing showing the cutter of a tape supply unit according to the first embodiment of the present invention cutting a release sheet.

[0054] FIG. 6 is a diagram showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention transferring a tape material to a sealing part.

[0055] FIG. 7 is a drawing showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention attaching an adhesive tape to a sealing part.

[0056] FIG. 8 is a drawing showing the separation gripper of a tape supply unit according to the first embodiment of the present invention separating a release sheet from an adhesive tape.

[0057] FIG. 9 is a drawing showing the adhesive tape of a tape supply unit according to the first embodiment of the present invention attached to a sealing part.

[0058] FIG. 10 is a drawing for explaining the pressurizing part of a secondary battery pouch manufacturing device according to a second embodiment of the present invention.

[0059] FIG. 11 is a drawing showing the first sealing part bent as the pressure part rises in FIG. 10.

[0060] Figure 12 is a drawing showing the appearance of the pressure part in Figure 11 moving toward the pouch body and attaching the adhesive tape to the pouch body.

[0061] FIG. 13 is a drawing for explaining a pouch for a secondary battery manufactured by a pouch manufacturing device for a secondary battery according to a second embodiment of the present invention.

[0062] FIG. 14 is a flowchart of a method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention.

[0063] FIG. 15 is a flowchart of the tape material unwinding step in the method for manufacturing a pouch for a secondary battery according to the third embodiment of the present invention.

[0064]

[0065] Hereinafter, preferred embodiments of the present invention are described in detail with reference to the attached drawings so that those skilled in the art can easily implement the present invention. However, the present invention may be embodied in various different forms and is not limited or restricted by the following embodiments.

[0066] In order to clearly explain the present invention, detailed descriptions of related prior art that are irrelevant to the explanation or that may unnecessarily obscure the essence of the invention have been omitted. Furthermore, when assigning reference numerals to the components of each drawing in this specification, identical or similar reference numerals are assigned to identical or similar components throughout the entire specification.

[0067] Furthermore, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted in a meaning and concept consistent with the technical spirit of the invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0068]

[0069] (1st embodiment)

[0070] FIG. 1 is a drawing showing a tape material of a tape supply unit according to a first embodiment of the present invention, and FIG. 2 is a drawing showing one side of a release sheet of a tape supply unit according to a first embodiment of the present invention.

[0071] Referring to FIGS. 1 and 2, the tape material (100) supplied by the tape supply unit (1) according to the first embodiment of the present invention may include a release sheet (110) and an adhesive tape (120).

[0072] The tape material (100) may be a release sheet (110) to which an adhesive tape (120) is attached. That is, the adhesive tape (120) may be supplied in a state attached to the release sheet (110).

[0073] The adhesive tape (120) may be a double-sided tape. Accordingly, the adhesive tape (120) may include a side (121) containing an adhesive material and a side (122) containing an adhesive material that is opposite to the side (121).

[0074] When the tape material (100) is supplied, one side (121) of the adhesive tape may be exposed to the outside, and the other side (122) of the adhesive tape may be attached to the release sheet (110). At this time, when the vacuum suction part (300) described later transports the tape material (100), one side (121) of the adhesive tape may be attached to the sealing part (12) of the pouch body (11).

[0075] The release sheet (110) is a material to which an adhesive tape (120) is attached, and may include a surface (111) to which one side (121) of the adhesive tape is attached, and a opposite surface (112) opposite to the one side (111). At this time, the vacuum suction part (300) to be described later can vacuum suction the opposite surface (112) of the release sheet.

[0076] As illustrated in FIG. 2, one side (111) of the release sheet may be divided into a first area (111a) and a second area (111b). An adhesive tape (120) is attached to the first area (111a), and the second area (111b) may refer to the remaining area of ​​one side (111) of the release sheet excluding the first area (111a).

[0077] FIG. 3 is a drawing showing the unwinding gripper of a tape supply unit according to the first embodiment of the present invention unwinding a tape material.

[0078] Referring to FIG. 3, a tape supply unit (1) according to the first embodiment of the present invention is a tape supply unit that supplies an adhesive tape (120) for attaching a sealing portion (12) to a pouch body (11) that accommodates an electrode assembly (20) inside, and may include a tape material supply portion (200) and a vacuum suction portion (300).

[0079] The tape material supply unit (200) can supply tape material (100) and may include a supply roll (210) and an unwinding gripper (220).

[0080] A tape material (100) can be wound onto a supply roll (210). In this way, the present invention provides a tape material (100) wound into a roll form, thereby obtaining the advantageous effect of minimizing the equipment and space required to supply the tape material (100). However, according to another embodiment of the present invention, it is also possible to supply the tape material in a straight line using a conventional conveyor, etc., without winding the tape material onto a supply roll.

[0081] The unwinding gripper (220) can unwind the wound tape material (100) by moving while gripping the end of the tape material (100) wound on the supply roll (210).

[0082] The unwinding gripper (220) may include an unwinding gripper body (221) and an unwinding grip member (222).

[0083] The unwinding gripper body (221) can move linearly along the first direction (D1). The linear movement of the unwinding gripper body (221) can be implemented in various ways depending on the required conditions and design specifications.

[0084] For example, linear movement of the unwinding gripper body (221) in the first direction (D1) can be implemented by a conventional linear motion system such as a motor, a solenoid, or a linear motor. According to another embodiment of the present invention, it is also possible to configure the unwinding gripper body (221) to move linearly along the first direction (D1) in response to the rotation of the lead screw.

[0085] The unwinding grip member (222) can be connected to the unwinding gripper body (221) and can be positioned to be movable along a second direction (D2) that intersects the first direction (D1) with respect to the unwinding gripper body (221).

[0086] A pair of unwinding grip members (222) may be arranged in the second direction (D2). Each unwinding grip member (222) can grip the release sheet (110) by moving closer to each other along the second direction (D2) with the release sheet (110) in between.

[0087] When the unwinding grip member (222) is gripping the release sheet (110), the unwinding gripper body (221) moves in the first direction (D1) to unwind the tape material (100).

[0088] The vacuum adsorption unit (300) can move the release sheet (110) to the sealing unit (12) while vacuum adsorbing it, thereby attaching the release sheet (110) to the sealing unit (12).

[0089] At this time, when the vacuum adsorption part (300) vacuum adsorbs the release sheet (110), the vacuum adsorption part (300) can be arranged to extend in a direction parallel to the length direction of the release sheet (110).

[0090] Since the target adhesive surface (12c) of the sealing portion (12) to which the adhesive tape (120) according to the present invention is attached is flat, it is preferable that the adhesive tape (120) be attached to the target adhesive surface (12c) while being pulled taut.

[0091] That is, as the vacuum adsorption part (300) of the present invention extends in a direction parallel to the length direction of the release sheet (110), the vacuum adsorption part (300) can apply vacuum pressure along the length direction of the release sheet (110).

[0092] At this time, since the release sheet (110) can be maintained in a stretched state (unwound state) by the unwinding gripper (220), the vacuum suction part (300) can vacuum suction the release sheet (110) while the release sheet (110) is pulled taut.

[0093] The vacuum adsorption unit (300) may include an adsorption unit body (310), an adsorption pad (320), and a vacuum block (not shown).

[0094] The adsorption body (310) can be extended parallel to the longitudinal direction of the release sheet (110). The adsorption body (310) can be connected to a plurality of adsorption pads (320), and each adsorption pad (320) can be fixed to the adsorption body (310).

[0095] The suction pad (320) is connected to the suction body (310) and can apply vacuum pressure to the release sheet (110).

[0096] A vacuum block (not shown) can generate vacuum pressure, and an adsorption pad (320) can receive the vacuum pressure generated from the vacuum block and apply it to a release sheet (110).

[0097] A plurality of adsorption pads (320) may be spaced apart at predetermined intervals along a direction parallel to the length direction of the release sheet (110), and each adsorption pad (320) may apply vacuum pressure to the other side (112) of the release sheet.

[0098] Since each adsorption pad (320) is spaced apart in a direction parallel to the length direction of the release sheet (110), the vacuum pressure applied to the other side (112) of the release sheet can be applied to a plurality of areas on the other side (112) of the release sheet. Accordingly, each of the areas to which the vacuum pressure is applied can be spaced apart at the preset intervals along the length direction of the release sheet (110).

[0099] Since the release sheet (110) can be maintained in a stretched state (unwound state) by the unwinding gripper (220), the suction pad (320) can vacuum suction the release sheet (110) while the release sheet (110) is pulled taut. Therefore, the present invention has the effect of allowing the adhesive tape (120) attached to one side (111) of the release sheet to be attached to the sealing part (12) while pulled taut.

[0100] When the adhesive tape (120) is attached to the sealing portion (12), the vacuum pressure applied to the release sheet (110) can be released. Additionally, when the vacuum pressure applied to the release sheet (110) by the suction pad (320) is released, the vacuum suction portion (300) can be separated from the release sheet (110).

[0101] Meanwhile, the tape material supply unit (200) of the tape supply unit (1) according to the first embodiment of the present invention may further include a cutter (230).

[0102] The cutter (230) can separate the tape material (100) from the supply roll (210) by cutting the tape material (100) unwound by the unwinding gripper (220) while the vacuum suction part (300) vacuum suctions the release sheet (110).

[0103] Meanwhile, since one side (121) of the adhesive tape contains an adhesive material, when the cutter (230) cuts the adhesive tape (120) attached to the first area (111a), the cutting force may be reduced as the cutter (230) comes into contact with one side (121) of the adhesive tape. Therefore, the cutter (230) can stably separate the release sheet (110) to which the adhesive tape (120) is attached from the supply roll (210) by cutting the second area (111b) of one side (111) of the release sheet.

[0104] Meanwhile, the tape supply unit (1) according to the first embodiment of the present invention may further include a separation gripper (400).

[0105] The separation gripper (400) can separate the release sheet (110) attached to the other side (122) of the adhesive tape from the adhesive tape (120) while the one side (121) of the adhesive tape is attached to the sealing portion (12). Specifically, the separation gripper (400) can separate the release sheet (110) from the adhesive tape (120) by moving while gripping the second area (111b) and the other side (112) of the release sheet.

[0106] The separation gripper (400) may include a separation gripper body (410) and a separation grip member (420).

[0107] The separating gripper body (410) is positioned to be movable and can move in a straight line and / or a curve. The movement of the separating gripper body (410) can be implemented in various ways depending on the required conditions and design specifications.

[0108] The separation grip member (420) can be connected to the separation gripper body (410) and can be positioned to move along the separation gripper body (410).

[0109] A pair of separation grip members (420) may be arranged spaced apart from each other. Each unwinding grip member (222) can grip the release sheet (110) by bringing them closer to each other with the release sheet (110) in between.

[0110] When the vacuum suction part (300) is separated from the release sheet (110), the separation grip member (420) can separate the release sheet (110) from the adhesive tape (120) by moving while gripping the second region (111b) of one side of the release sheet (110) and the other side (112) of the release sheet. Through this, when the gripping of the release sheet (110) is released after the separation grip member (420) separates the release sheet (110) from the adhesive tape (120), the separation grip member (420) can be easily separated from the release sheet (110).

[0111] Hereinafter, the supply process of an adhesive tape (120) by a tape supply unit (1) according to the first embodiment of the present invention will be described.

[0112] Meanwhile, in the present specification, the first direction (D1) may mean a horizontal direction and the second direction (D2) may mean a vertical direction, but is not limited thereto, and the direction in which the shaped sheet (110) extends may be the first direction (D1) and the second direction (D2) may mean a direction intersecting the first direction.

[0113] Referring again to FIG. 3, with the tape material (100) wound on the supply roll (210), the unwinding gripper (220) moves in a first direction (D1) while gripping the release sheet (110) to unwind the wound tape material (100).

[0114] FIG. 4 is a diagram showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention descending and approaching a release sheet.

[0115] Referring to FIG. 4, the adsorption body (310) can descend along the second direction (D2) while positioned parallel to the release sheet (110). At this time, the adsorption pad (320) can be positioned on the adsorption body (310) so as to face the release sheet (110).

[0116] FIG. 5 is a drawing showing the cutter of a tape supply unit according to the first embodiment of the present invention cutting a release sheet.

[0117] Referring to FIG. 5, the cutter (230) can cut the tape material (100) in a vacuum-adsorbed state. Specifically, when the unwinding gripper (220) holds the release sheet (110) and the vacuum adsorption part (300) vacuum adsorbs the other side (112) of the release sheet, the cutter (230) can cut the release sheet (110). At this time, the cutter (230) can cut the second region (111b) of the other side (112) of the release sheet.

[0118] FIG. 6 is a drawing showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention transferring a tape material to a sealing part, and FIG. 7 is a drawing showing the vacuum suction part of a tape supply unit according to the first embodiment of the present invention attaching an adhesive tape to a sealing part.

[0119] Referring to FIGS. 6 and 7, the vacuum suction unit (300) can transport the cut tape material (100) to the sealing unit (12), and the vacuum suction unit (300) can descend along the second direction (D2) to attach the adhesive tape (120) to the sealing unit (12). Specifically, one side (121) of the adhesive tape can be attached to the target adhesive surface (12c) of the sealing unit (12).

[0120] Additionally, after one side (121) of the adhesive tape is attached to the sealing part (12), the vacuum pressure applied to the other side (112) of the release sheet is released, thereby releasing the connection between the vacuum adsorption part (300) and the release sheet (110).

[0121] FIG. 8 is a drawing showing the separation gripper of a tape supply unit according to the first embodiment of the present invention separating a release sheet from an adhesive tape.

[0122] Referring to FIG. 8, with the vacuum suction part (300) separated from the release sheet (110), the separation gripper (400) can grip the release sheet (110) and separate it from the adhesive tape (120). Specifically, the separation gripper (400) can move while gripping the second region (111b) of one side of the release sheet (110) and the other side (112) of the release sheet, thereby separating the release sheet (110) from the adhesive tape (120).

[0123] FIG. 9 is a drawing showing the adhesive tape of a tape supply unit according to the first embodiment of the present invention attached to a sealing part.

[0124] Referring to FIG. 9, the release sheet (110) may be attached (transferred) to the sealing portion (12) of the separated adhesive tape (120). At this time, when the sealing portion (12) is folded and pressed by the pressurizing portion (500) to be described later, the adhesive tape (120) of the sealing portion (12) may be attached to the pouch body (11).

[0125] The tape supply unit (1) according to the first embodiment of the present invention simplifies the structure of the device for attaching the adhesive tape (120) to the sealing portion (12) and can simplify the process of attaching the adhesive tape (120) accordingly. In addition, the tape supply unit (1) according to the first embodiment of the present invention has the effect of reducing the amount of adhesive tape (120) used and preventing incorrect attachment of the adhesive tape (120) by increasing the efficiency of the process of attaching the adhesive tape (120).

[0126]

[0127] (2nd Example)

[0128] FIG. 10 is a drawing for explaining a pressurizing part of a secondary battery pouch manufacturing device according to a second embodiment of the present invention, FIG. 11 is a drawing showing the pressurizing part rising in FIG. 10 to fold the first sealing part, FIG. 12 is a drawing showing the pressurizing part moving toward the pouch body in FIG. 11 to attach an adhesive tape to the pouch body, and FIG. 13 is a drawing for explaining a secondary battery pouch manufactured by a secondary battery pouch manufacturing device according to a second embodiment of the present invention.

[0129] Referring to FIGS. 10 to 13, a secondary battery pouch manufacturing device according to a second embodiment of the present invention is a device for manufacturing a secondary battery pouch (10) comprising a pouch body (11) that accommodates an electrode assembly (20) inside and a sealing part (12) disposed on the pouch body (11), and may include a tape supply unit (1) and a pressurizing part (500).

[0130] At this time, the tape supply unit (1) of the secondary battery pouch manufacturing device according to the second embodiment of the present invention may be the tape supply unit (1) according to the first embodiment of the present invention. Accordingly, the description of the tape supply unit (1) of the secondary battery pouch manufacturing device according to the second embodiment of the present invention to be described below may be based on the description of the tape supply unit (1) according to the first embodiment of the present invention.

[0131] The pressurizing unit (500) can press the sealing unit (12) while one side (121) of the adhesive tape is attached to the sealing unit (12) by the tape supply unit (1) to attach the other side (122) of the adhesive tape to the pouch body (11).

[0132] The secondary battery pouch manufacturing device according to the second embodiment of the present invention may be used to fold and bond the sealing portion (12) of the pouch (10), and the present invention is not limited or restricted by the type and structure of the pouch (10) used in the secondary battery pouch manufacturing device.

[0133] The pouch (10) can be provided in various structures including a pouch body (11) and a sealing part (12).

[0134] The pouch body (11) accommodates the electrode assembly (20) inside and is provided to completely wrap around the perimeter of the electrode assembly (20).

[0135] The pouch body (11) may be provided in various structures capable of accommodating the electrode assembly (20) inside, and the present invention is not limited or restricted by the structure and shape of the pouch body (11).

[0136] For example, the pouch body (11) may be provided by joining a lower sheet (not shown) and an upper sheet (not shown) having a roughly rectangular shape, and a receiving space for accommodating an electrode assembly (20) may be defined between the lower sheet and the upper sheet.

[0137] In the embodiments of the present invention described above, the pouch body (11) is configured to have a roughly rectangular shape, but according to other embodiments of the present invention, it is also possible to configure the pouch body to have a circular or other shape.

[0138] In addition, the pouch body (11) may be configured with a structure including a metal layer, such as an aluminum thin film, to protect components such as the electrolyte injected inside, and to improve the electrochemical properties of the electrode assembly (20) and the electrolyte, as well as heat dissipation.

[0139] The electrode assembly (20) may include an electrode (not shown) and a separator (not shown) laminated to the electrode. For example, the electrode may include a first electrode (e.g., a positive electrode) laminated on one side (e.g., an upper surface) of the separator and a second electrode (e.g., a negative electrode) laminated on the other side (e.g., a lower surface) of the separator.

[0140] The sealing portion (12) can be formed by joining the side portion (edge) of the lower sheet and the upper sheet constituting the pouch body (11), and is provided to protrude from the side (11a) of the pouch body.

[0141] For example, the sealing portion (12) may be formed along three or four sides of the pouch body (11). According to another embodiment of the present invention, it is also possible to configure the sealing portion (12) to be formed along one or two sides of the pouch body.

[0142] The sealing part (12) may consist of a first sealing part (12a) and a second sealing part (12b).

[0143] The first sealing portion (12a) may protrude from the pouch body (11) along the first direction (D1) (horizontal direction).

[0144] The second sealing portion (12b) is folded from the first sealing portion (12a), and a target adhesive surface (12c) can be formed on the second sealing portion (12b).

[0145] The target adhesive surface (12c) may refer to the surface of the sealing portion (12) to which the adhesive tape (120) is to be attached. Specifically, the target adhesive surface (12c) may be located on the second sealing portion (12b).

[0146] A secondary battery pouch manufacturing device according to a second embodiment of the present invention may further include a separation gripper (400) for separating a release sheet (110) attached to the other side (122) of an adhesive tape from an adhesive tape (120) while one side (121) of the adhesive tape is attached to a sealing portion (12).

[0147] After the release sheet (110) is separated from the adhesive tape (120) by the separation gripper (400), the pressing part (500) can press the sealing part (12) to attach the adhesive tape (120) to the pouch body (11).

[0148] Specifically, the pressure member (500) can fold the sealing member (12) so that the other side (122) of the adhesive tape faces the pouch body (11) while one side (121) of the adhesive tape is attached to the sealing member (12), and then press the sealing member (12) against the pouch body (11) so that the other side (122) of the adhesive tape is attached to the pouch body (11).

[0149] More specifically, when the pressing part (500) primarily folds the first sealing part (12a), the target adhesive surface (12c) placed on the second sealing part (12b) can be positioned to face the pouch body (11). Specifically, the sealing part (12) can be folded so that the sealing part (12) has an L-shape by pressing the sealing part (12) in the second direction (D2) by the pressing part (500).

[0150] With the first sealing portion (12a) in a folded state, the pressing portion (500) can secondarily press the first sealing portion (12a) in a direction that brings it closer to the pouch body (11). Specifically, the pressing portion (500) can press the sealing portion (12) in a first direction (D1) so that the target adhesive surface (12c) of the sealing portion (12) brings it closer to the pouch body (11).

[0151] The pressurizing member (500) can pressurize the sealing member (12) while moving in a first direction (D1) and / or a second direction (D2). The linear movement of the pressurizing member (500) in the first direction (D1) and / or the second direction (D2) can be implemented in various ways depending on the required conditions and design specifications.

[0152] For example, linear movement of the pressurizing part (500) in the first direction (1) and / or the second direction (D2) can be implemented by a conventional linear motion system such as a motor, a solenoid, or a linear motor. According to another embodiment of the present invention, it is also possible to configure the pressurizing part (500) to move linearly along the first direction (D1) and / or the second direction (D2) in response to the rotation of the lead screw.

[0153] Meanwhile, although the embodiments of the present invention described above and illustrated are explained as examples in which the sealing portion (12) is first folded to include the first sealing portion (12a) and the second sealing portion (12b), and then secondarily folded again through the pressurizing portion (500), according to another embodiment of the present invention, it is also possible to configure the pressurizing portion to fold the unfolded sealing portion (e.g., a sealing portion including only the first sealing portion) or to additionally fold the sealing portion that has been folded two or more times.

[0154] The secondary battery pouch manufacturing device according to the second embodiment of the present invention has the effect of improving space utilization and design freedom by simplifying the structure of the manufacturing device for performing folding and bonding processes for the sealing portion (12) of the pouch (10) and minimizing the space occupied by the sealing portion (12).

[0155]

[0156] (3rd Example)

[0157] FIG. 14 is a flowchart of a method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention, and FIG. 15 is a flowchart of a tape material unwinding step in a method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention.

[0158] Referring to FIG. 14 and FIG. 15, a method for manufacturing a pouch for a secondary battery according to the third embodiment of the present invention is a method for manufacturing a pouch (10) for a secondary battery comprising a pouch body (11) that accommodates an electrode assembly (20) inside and a sealing portion (12) disposed on the pouch body (11), wherein an adhesive tape (120) can be attached to the sealing portion (12) using a tape supply unit (1) according to the first embodiment of the present invention.

[0159] A method for manufacturing a pouch for a secondary battery according to a third embodiment of the present invention may include a tape material supply step (S100) of supplying a tape material (100) comprising an adhesive tape (120) and a release sheet (110) having the adhesive tape (120) attached to one side (111); an adhesive tape transfer step (S200) of moving the release sheet to a sealing part (12) while the vacuum suction part (300) vacuum suctions the other side (112) of the tape material and attaching the one side (121) of the adhesive tape to the sealing part (12); and an adhesive tape other side attachment step (S300) of attaching the other side (122) of the adhesive tape to a pouch body (11) by pressing the sealing part (12) while the one side (121) of the adhesive tape is attached to the sealing part (12).

[0160] At this time, the tape material supply step (S100) may include a tape material unwinding step (S110) for unwinding the wound tape material (100), a release sheet adsorption step (S120) in which a vacuum adsorption unit (300) vacuum adsorbs the other side (112) of the release sheet, and a release sheet cutting step (S130) in which a cutter (230) cuts the release sheet (110) while the other side (112) of the release sheet is vacuum adsorbed by the vacuum adsorption unit (300).

[0161] Additionally, the adhesive tape transfer step (S200) may include an adhesive tape one-sided attachment step (S210) in which the vacuum suction part (300) vacuum suctions the other side of the release sheet (110) and transfers it to the sealing part (12) to attach one side (121) of the adhesive tape to the sealing part (12), a vacuum pressure release step (S220) in which the vacuum pressure applied to the other side (112) of the release sheet is released, and a release sheet separation step (S230) in which the release sheet (110) is separated from the adhesive tape (120) while the one side (121) of the adhesive tape is attached to the sealing part (12).

[0162] The method for manufacturing a pouch for a secondary battery according to the third embodiment of the present invention simplifies the manufacturing method for performing folding and bonding processes for the sealing portion (12) of the pouch (10), and has the effect of improving space utilization and design freedom by minimizing the space occupied by the sealing portion (12).

[0163]

[0164] Although the present invention has been described above by limited embodiments and drawings, the present invention is not limited thereto, and various implementations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.

[0165]

[0166] [Explanation of the symbol]

[0167] 1: Tape supply unit 100: Tape material

[0168] 110: Release sheet 120: Adhesive tape

[0169] 200: Tape material supply unit 210: Supply roll

[0170] 220: Unwinding gripper 221: Unwinding gripper body

[0171] 222: Unwinding grip missing 230: Cutter

[0172] 300: Vacuum suction part 310: Suction part body

[0173] 320: Suction pad 400: Separation gripper

[0174] 410: Detachable gripper body 420: Detachable gripper part

[0175] 500: Pressurizing part

Claims

1. A tape supply unit for supplying adhesive tape for attaching a sealing portion to a pouch body that accommodates an electrode assembly inside, A tape material supply unit for supplying a tape material comprising the adhesive tape and a release sheet to which the adhesive tape is attached; and A tape supply unit comprising a vacuum suction unit that moves the above-mentioned release sheet to the sealing portion while vacuum suctioned, and attaches the adhesive tape to the sealing portion.

2. In Paragraph 1, The above adhesive tape is attached to one side of the above release sheet, and The above vacuum adsorption unit is a tape supply unit that vacuum adsorbs the other side of the above release sheet.

3. In Paragraph 2, The above tape material supply unit is, A supply roll on which the above tape material is wound; and A tape supply unit comprising an unwinding gripper that moves while gripping the end of the tape material wound on the supply roll and unwinds the tape material.

4. In Paragraph 3, The above tape material supply unit is, A tape supply unit further comprising a cutter that cuts the unwound tape material and separates it from the supply roll while the vacuum suction unit vacuum suctions the release sheet.

5. In Paragraph 4, One side of the above-mentioned release sheet is, The above adhesive tape is divided into a first area to which it is attached and a second area which is the remaining area of ​​the first area, and The cutter above is a tape supply unit that cuts the second area.

6. In Paragraph 2, One side of the above adhesive tape is attached to the sealing part, and The other side of the adhesive tape is a tape supply unit attached to one side of the release sheet.

7. In Paragraph 6, A tape supply unit further comprising a separation gripper for separating a release sheet attached to the other side of the adhesive tape from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

8. In Paragraph 7, One side of the above-mentioned release sheet is, The above adhesive tape is divided into a first area to which it is attached and a second area which is the remaining area of ​​the first area, and A tape supply unit that separates the release sheet from the adhesive tape by moving the separation gripper while gripping the second area and the other side of the release sheet.

9. In Paragraph 1, In a state where the above vacuum adsorption part has vacuum adsorbed the above release sheet, The above vacuum adsorption unit is a tape supply unit arranged to extend in a direction parallel to the longitudinal direction of the release sheet.

10. In Paragraph 1, The above vacuum adsorption unit is, A tape supply unit comprising a plurality of adsorption pads spaced apart at preset intervals along a direction parallel to the length direction of the release sheet and applying vacuum pressure to the release sheet.

11. In Paragraph 10, A tape supply unit in which the application of vacuum pressure to the release sheet is released when the adhesive tape is attached to the sealing portion.

12. An apparatus for manufacturing a pouch for a secondary battery, comprising a pouch body that accommodates an electrode assembly inside and a sealing portion disposed on the pouch body, A tape supply unit for supplying an adhesive tape for attaching the sealing portion to the above pouch body; and It includes a pressure unit that presses the sealing part to attach the other side of the adhesive tape to the pouch body while one side of the adhesive tape is attached to the sealing part by the tape supply unit. The above tape supply unit is, A tape material supply unit for supplying a tape material comprising the adhesive tape and a release sheet to which the adhesive tape is attached; and A secondary battery pouch manufacturing apparatus comprising a vacuum adsorption unit that moves the above-mentioned release sheet to the sealing unit while vacuum adsorbing it, and attaches the above-mentioned adhesive tape to the sealing unit.

13. In Paragraph 12, A tape supply unit further comprising a separation gripper for separating a release sheet attached to the other side of the adhesive tape from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

14. In Paragraph 13, The above-mentioned pressurizing unit is, A secondary battery pouch manufacturing device in which, with one side of the adhesive tape attached to the sealing part, the sealing part is folded so that the other side of the adhesive tape faces the pouch body, and then the sealing part is pressed against the pouch body so that the other side of the adhesive tape is attached to the pouch body.

15. A method for manufacturing a pouch for a secondary battery comprising a pouch body that accommodates an electrode assembly inside and a sealing portion disposed on the pouch body, wherein A tape material supply step comprising an adhesive tape and a release sheet having the adhesive tape attached to one side thereof; and A method for manufacturing a pouch for a secondary battery, comprising an adhesive tape transfer step in which a vacuum adsorption part moves to a sealing part while vacuum adsorbing the other side of the release sheet, and attaches one side of the adhesive tape to the sealing part.

16. In Paragraph 15, A method for manufacturing a pouch for a secondary battery, further comprising a step of attaching the other side of an adhesive tape to the pouch body by pressing the sealing part while one side of the adhesive tape is attached to the sealing part.

17. In Paragraph 15, The above tape material supply step is, A tape fabric unwinding step for unwinding the wound tape fabric; A release sheet adsorption step in which the vacuum adsorption unit vacuum adsorbs the other side of the release sheet; and A method for manufacturing a pouch for a secondary battery, comprising a release sheet cutting step of cutting the release sheet while the other side of the release sheet is vacuum adsorbed.

18. In Paragraph 15, The above adhesive tape transfer step is, A step of attaching one side of an adhesive tape by transferring the vacuum suction part to the sealing part while vacuum suctioning the other side of the release sheet, thereby attaching one side of the adhesive tape to the sealing part; and A method for manufacturing a pouch for a secondary battery, comprising a vacuum pressure release step of releasing the vacuum pressure applied to the other side of the above-mentioned release sheet.

19. In Paragraph 18, The above adhesive tape transfer step is, A method for manufacturing a pouch for a secondary battery, further comprising a release sheet separation step of separating the release sheet from the adhesive tape while one side of the adhesive tape is attached to the sealing portion.

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