Apparatus for processing pouch-type battery cell case and processing method using same

Abstract

The present invention relates to an apparatus for processing a pouch-type battery cell case and a processing method using same and, more specifically, to an apparatus for processing a pouch-type battery cell case and a processing method using same, the apparatus comprising: a die part on which a battery cell case including a pocket part and an extension part outside the pocket part is seated; a gripping part for transferring the extension part of the battery cell case to one side while gripping the extension part; and a cutting part positioned between the die part and the gripping part and cutting a partial area of the extension part of the battery cell case being transferred, wherein the die part is a conveyor which continuously moves toward one side.

Description

Processing device for pouch-type battery cell case and processing method using the same

[0001] This application claims the benefit of priority to Korean Patent Application No. 2024-0112354, filed August 21, 2024, the entire contents of which are incorporated herein by reference.

[0002] The present invention relates to a processing device for a pouch-type battery cell case and a processing method using the same, and more particularly, to a processing device for a pouch-type battery cell case capable of continuously cutting an extension portion of a pouch-type battery cell case and a processing method using the same.

[0003]

[0004] As technological development and demand for mobile devices increase, rechargeable secondary batteries are increasingly being used as energy sources for a variety of mobile devices. Secondary batteries are also attracting attention as an energy source for electric and hybrid electric vehicles, offering an alternative to conventional gasoline and diesel vehicles that rely on fossil fuels.

[0005] Secondary batteries are classified into cylindrical and prismatic batteries, in which the electrode assembly is built into a cylindrical or prismatic metal can, and pouch-type batteries, in which the electrode assembly is built into a pouch-type case made of aluminum laminate sheet, depending on the shape of the battery case.

[0006] The typical pouch-type secondary battery manufacturing process involves inserting an electrode assembly into a battery case accommodating space made of a laminate sheet, injecting an electrolyte inside the battery case, sealing it, and sequentially performing the activation step.

[0007] Additionally, during the activation stage, the lithium and electrolyte of the secondary battery chemically react to generate gas, which is captured in the gas pocket and then removed during the degassing process.

[0008] And since the gas pocket part is unnecessary in the finished secondary battery once the gas capture is complete, pre-cutting and main cutting are performed, in which a portion of the case including the gas pocket part is cut off.

[0009] However, pre-cutting, including the aforementioned main cutting, is usually performed while the battery case is stationary, and therefore the process speed is bound to be slow.

[0010]

[0011] (Prior art literature)

[0012] (Patent Document 1) Korean Patent Publication No. 10-2022-0064751

[0013]

[0014] In order to solve the above problems, the present invention aims to provide a processing device for a pouch-type battery cell case, which enables a cutting process while the pouch-type battery cell case is continuously transported during cutting of the pouch-type battery cell case performed after the activation step, and a processing method using the same.

[0015]

[0016] In order to achieve the above-described purpose, a processing device for a pouch-type battery cell case according to the present invention comprises: a die portion (100) on which a battery cell case (12) including a pocket portion (12a) and an extension portion (12b) outside the pocket portion (12a) is mounted; a grip portion (200) that grips the extension portion (12b) of the battery cell case (12) and transports it to one side; and a cutting portion (300) that is positioned between the die portion (100) and the grip portion (200) and cuts a portion of the extension portion (12b) of the battery cell case (12) being transported; wherein the die portion (100) is characterized in that it is a conveyor that continuously moves toward one side.

[0017] In addition, in the processing device for a pouch-type battery cell case according to the present invention, the gripping part (200) is characterized by including a first gripping part (210) that is in close contact with one surface of the extension part (12b) of the battery cell case (12), and a second gripping part (220) that is in close contact with the other surface of the extension part (12b) of the battery cell case (12).

[0018] In addition, in the processing device for a pouch-type battery cell case according to the present invention, the first gripping part (210) includes a plurality of first pulleys (211) and a first belt (212) positioned to wrap around the first pulleys (211), and the second gripping part (220) includes a plurality of second pulleys (221) and a second belt (222) positioned to wrap around the second pulleys (221).

[0019] In addition, in the processing device for a pouch-shaped battery cell case according to the present invention, the cutting part (300) includes a first cutting member (310) in the shape of a disk that is in close contact with one surface of an extension portion (12b) of the battery cell case (12) in a state perpendicular to the surface, and a second cutting member (320) in the shape of a disk that is in close contact with the other surface of the extension portion (12b) of the battery cell case (12), and is characterized in that the extension portion (12b) of the battery cell case (12) is continuously cut by rotating the first cutting member (310) and the second cutting member (320) together.

[0020] In addition, in the processing device of the pouch-type battery cell case according to the present invention, the first cutting member (310) includes a first a body (311) having an inclined surface (311a) formed at the edge thereof and an outer diameter that increases toward the gripping portion (200), a first b body (312) located on one side of the first a body (311) and having an outer diameter smaller than that of the first a body (311), and the second cutting member (320) includes a second a body (321) formed of a recessed portion (321a) formed along the center of the circumference, a first partition wall (321b) provided on one side of the recessed portion (321a), and a second partition wall (321c) formed on the other side of the recessed portion (321a), wherein the first a body (311) and the first partition wall (321b) are engaged with each other to form the battery cell case (12). It is characterized in that a part of the extension (12b) is cut off.

[0021] In addition, in the processing device of the pouch-type battery cell case according to the present invention, the first cutting member (310) further includes a first c body (313) positioned on one side of the first b body (312), and a first contact member (313a) in the shape of a circular belt that is in close contact with one surface of the extension portion (12b) of the battery cell case (12) is provided on the circumference of the first c body (313), and the second cutting member (320) further includes a second b body (322) positioned on one side of the second a body (321), and a second contact member (322a) in the shape of a circular belt that is in close contact with the other surface of the extension portion (12b) of the battery cell case (12) is provided on the circumference of the second b body (322).

[0022] In addition, in the processing device for a pouch-type battery cell case according to the present invention, the first sealing member (313a) and the second sealing member (322a) are characterized in that they are made of silicone or rubber.

[0023] In addition, in the processing device of the pouch-type battery cell case according to the present invention, the outer circumferential width of the 1c body (313) is smaller than the outer circumferential width of the second sealing member (322a), and when a part of the extension part (12b) of the battery cell case (12) is cut, the outer circumferential surface of the 1c body (313) is positioned to overlap with the outer circumferential surface of the second sealing member (322a).

[0024] In addition, in the processing device of the pouch-type battery cell case according to the present invention, the second partition wall (321c) of the second a body (321) is characterized in that it supports the other surface of the extension portion (12b) of the battery cell case (12) when the extension portion (12b) of the battery cell case (12) is cut.

[0025] In addition, in the processing device of the pouch-type battery cell case according to the present invention, a guide part (400) is further provided in front of the cutting part (300) to guide the extension part (12b) of the battery cell case (12) to the cutting part (300).

[0026] In addition, in the processing device for a pouch-type battery cell case according to the present invention, the guide part (400) is characterized by including a first guide plate (410) positioned above the extension part (12b) of the battery cell case (12), and a second guide plate (420) positioned below the extension part (12b) of the battery cell case (12).

[0027] In addition, in the processing device for a pouch-type battery cell case according to the present invention, the front inlet side of the first guide plate (410) is bent upward with a predetermined radius of curvature, and the front inlet side of the second guide plate (420) is bent downward with a predetermined radius of curvature.

[0028] In addition, the processing device for a pouch-type battery cell case according to the present invention is characterized in that it further includes an air injection unit (500) that injects air toward an extension portion (12b) of the battery cell case (12).

[0029] In addition, in the processing device for a pouch-type battery cell case according to the present invention, a scrap recovery unit (600) for recovering scrap obtained by cutting off a portion of an extension portion (12b) of the battery cell case (12) is further provided.

[0030] In addition, a processing device method for a pouch-type battery cell case according to the present invention is characterized by including a first step of continuously supplying a battery cell case including a pocket portion and an extension portion outside the pocket portion in one direction; a second step of continuously transporting the battery cell case supplied in the first step in one direction while holding the extension portion; and a third step of continuously cutting a portion of the extension portion of the battery cell case transported in the second step.

[0031]

[0032] According to the processing device for a battery cell case according to the present invention and the processing method using the same, the device includes a pair of gripping parts that are in close contact with both sides of the extension part of the battery cell case and a pair of cutting parts that are formed in a circular shape and rotate, so that a cutting process can be performed while the pouch-type battery cell case is continuously transported, which can contribute to improving the production speed of pouch-type secondary batteries.

[0033] In addition, according to the processing device for a battery cell case according to the present invention and the processing method using the same, a guide part for guiding an extension part of the battery cell case is provided in front of the grip part, so that even if a part of the extension part of the battery cell case is slightly bent upward or downward, it is possible to guide it to the grip part without folding.

[0034]

[0035] Figure 1 is a plan view of a pouch-type battery cell.

[0036] Figure 2 is a conceptual diagram of a pouch-type battery cell case processing device according to the present invention.

[0037] FIG. 3 is a perspective view showing a pouch-type battery cell case being cut in the pouch-type battery cell case processing device illustrated in FIG. 2.

[0038] FIG. 4 is a front view showing a pouch-type battery cell case being cut in the pouch-type battery cell case processing device illustrated in FIG. 2.

[0039] Figure 5 is an enlarged perspective view of a gripping part constituting a pouch-type battery cell case processing device according to the present invention.

[0040] Figure 6 is an enlarged perspective view of a cutting section constituting a pouch-type battery cell case processing device according to the present invention.

[0041] Figure 7 is an enlarged front view of a cutting section constituting a pouch-type battery cell case processing device according to the present invention.

[0042] Figure 8 is a cross-sectional view for explaining a guide part constituting a pouch-type battery cell case processing device according to the present invention.

[0043] Figure 9 is an enlarged perspective view of a guide part constituting a pouch-type battery cell case processing device according to the present invention.

[0044] Fig. 10 is a cross-sectional view showing a modified example of a guide part constituting a pouch-type battery cell case processing device according to the present invention.

[0045] Figure 11 is a flow chart of a method for processing a pouch-type battery cell case according to the present invention.

[0046]

[0047] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail, so that those skilled in the art can easily implement the present invention. However, when describing the operating principles of preferred embodiments of the present invention in detail, if a detailed description of a related known function or configuration is judged to unnecessarily obscure the gist of the present invention, such detailed description will be omitted.

[0048] Additionally, the same drawing reference numerals are used for parts with similar functions and actions throughout the drawings. Throughout the specification, when a part is said to be connected to another part, this includes not only direct connections but also indirect connections with other elements intervening. Furthermore, inclusion of a component does not exclude other components unless specifically stated otherwise, but rather implies the inclusion of additional components.

[0049]

[0050] Hereinafter, a processing device for a pouch-type battery cell case according to the present invention and a processing method using the same will be described.

[0051] Fig. 1 is a plan view of a pouch-type battery cell. Referring to Fig. 1, the pouch-type battery cell will first be described. The pouch-type battery cell (10) is configured to include an electrode assembly (not shown) in which a pair of electrode leads (11) are positioned facing each other, and a battery cell case (12) in which a pocket portion (12a) is formed to accommodate the electrode assembly (not shown) and an extension portion (12b) is provided on the outside of the pocket portion (12a).

[0052] At this time, the extension part (12b) has a main sealing part (S) to prevent the injected electrolyte from leaking out, and a cutting line (C) is located outside the main sealing part (S).

[0053] That is, in the present invention, during the main cutting step, which is a step after the activation process, the degassing process, the pre-cutting, and the main sealing, a device is provided that cuts a portion of the extension part (12b) along the cutting line (C) of the extension part (12b) located outside the pocket part (12a) of the battery cell case (12). Of course, it can also be used during the pre-cutting step of the battery cell case (12).

[0054] Meanwhile, the electrode assembly (not shown) accommodated in the pocket portion (12a) may be formed of a jelly-roll type electrode assembly having a structure in which a separator is interposed between a long sheet-shaped cathode and anode and then rolled up, a stack type electrode assembly having unit cells in which rectangular cathodes and anodes are stacked with a separator interposed between them, a stack-folding type electrode assembly in which the unit cells are rolled up by a long separating film, or a lamination-stack type electrode assembly in which the unit cells are stacked with a separator interposed between them and attached to each other, but is not limited thereto.

[0055] The positive electrode is composed of a positive electrode current collector and a positive electrode active material applied to the upper and lower surfaces of the positive electrode current collector. A conductive material and a binder may be mixed with the positive electrode active material, and a filler may be further added as needed.

[0056] The negative electrode is composed of a negative electrode current collector and a negative electrode active material applied to the lower and upper surfaces of the negative electrode current collector. A conductive material and a binder may be additionally mixed into the negative electrode active material and coated on the negative electrode current collector.

[0057] The separator prevents shorting between the aforementioned negative electrode and positive electrode and only allows the movement of lithium ions. The material of the separator is preferably one selected from among polyethylene, polypropylene, polyethylene / polypropylene double layer, polyethylene / polypropylene / polyethylene triple layer, polypropylene / polyethylene / polypropylene triple layer, and organic fiber filter paper, but is not limited thereto.

[0058] In addition, the battery cell case (12) forms a pocket portion (12a) using a laminate sheet composed of an outer covering layer, a metal layer, and an inner covering layer.

[0059] Since the inner covering layer is in direct contact with the electrode assembly, it must have insulation and electrolytic resistance, and in order to seal it from the outside, the sealing area where the inner layers are thermally bonded must have excellent thermal bonding strength.

[0060] Materials for the inner covering layer may be selected from, but are not limited to, polyolefin resins such as polypropylene, polyethylene, polyethylene acrylic acid, and polybutylene, which have excellent chemical resistance and good sealing properties, polyurethane resins, and polyimide resins, and polypropylene, which has excellent mechanical properties such as tensile strength, rigidity, surface hardness, and impact strength, and excellent chemical resistance, is most preferable.

[0061] The metal layer in contact with the inner covering layer serves as a barrier layer that prevents moisture or various gases from penetrating into the battery from the outside, and a preferred material for this metal layer is an aluminum film that is lightweight and has excellent formability.

[0062] And the other side of the metal layer is provided with an outer covering layer, and this outer covering layer can use a heat-resistant polymer with excellent tensile strength, moisture permeability, and air permeability to protect the electrode assembly while ensuring heat resistance and chemical resistance, and examples thereof include, but are not limited to, nylon or polyethylene terephthalate.

[0063]

[0064] FIG. 2 is a conceptual diagram of a pouch-type battery cell case processing device according to the present invention, FIG. 3 is a perspective view showing a pouch-type battery cell case being cut in the pouch-type battery cell case processing device illustrated in FIG. 2, and FIG. 4 is a front view showing a pouch-type battery cell case being cut in the pouch-type battery cell case processing device illustrated in FIG. 2.

[0065] Referring to FIGS. 1 to 4 together, the processing device for a pouch-type battery cell case according to the present invention may include a die portion (100), a grip portion (200), and a cutting portion (300), and may include at least one of a guide portion (400), an air injection portion (500), and a scrap recovery portion (600) as needed.

[0066] First, the die section (100) is where the battery cell case (12) is mounted, which has a pocket section (12a) as described above and an extension section (12b) provided on the outside of the pocket section (12a). At this time, it is preferable that the die section (100) be a conveyor that can continuously move toward one side (the 8 o'clock direction in FIG. 2) so that a part of the extension section (12b) can be cut during the process of continuously supplying the battery cell case (12).

[0067] In addition, it is preferable to provide a guide bar (110) along the longitudinal direction near one edge of the upper surface of the die (100). When such a guide bar (110) is provided, alignment of the battery cell cases (12) is easy. For example, by positioning one side of the pocket part (12a) so that it is in close contact with one side of the guide bar (110), the battery cell cases (12) that require processing can be accurately aligned.

[0068] The gripper (200) is located at one edge of the die (100) (4 o'clock direction in Fig. 2) and performs the function of gripping and moving the extension (12b) of the battery cell case (12) to one side.

[0069] And the cutting section (300) is located between the die section (100) and the grip section (200), and cuts along the cutting line (C), which is a part of the extension section (12b) of the battery cell case (12) being transported.

[0070] In addition, the guide part (400) is positioned in front of the cutting part (300) and is configured to guide the extension part (12b) of the battery cell case (12) to the cutting part (300).

[0071] A detailed description of these phage sections (200), cutting sections (300), and guide sections (400) will be provided later.

[0072] Meanwhile, when the extension part (12b) of the battery cell case (12) is cut, not only scraps cut off based on a part of the extension part (12b), i.e., the cutting line (C), but also fine foreign substances may be generated during the cutting process.

[0073] If fine foreign substances are attached to the battery cell case (12) or electrode lead and transferred to the next process, it may lead to a defective battery cell, and if they are attached to the cutting section (300), accurate cutting may be difficult.

[0074] Therefore, it is preferable to provide an air injection unit (500) to prevent foreign substances generated during the cutting process from attaching to the battery cell case (12), electrode lead, and cutting unit (300). This air injection unit (500) can be positioned to inject air toward the extension (12b) of the battery cell case (12) and the cutting unit (300), and as long as it can inject air, there are no particular restrictions on the type or method.

[0075] The scrap recovery unit (600) is for recovering scrap, which is a piece of the previously described extension (12b) cut off, and may be a box-shaped unit with a certain volume and an open upper portion.

[0076]

[0077] Fig. 5 is an enlarged perspective view of a gripping portion of a pouch-type battery cell case processing device according to the present invention. The gripping portion will be described in detail with reference to Figs. 3 to 5.

[0078] The gripping part (200) for gripping the extension part (12b) of the battery cell case (12) and transporting it in the direction of the cutting part (300) is configured to include a first gripping part (210) that is in close contact with one surface of the extension part (12b) of the battery cell case (12), and a second gripping part (220) that is in close contact with the other surface of the extension part (12b) of the battery cell case (12).

[0079] At this time, the first gripping part (210) is configured to include a plurality of first pulleys (211) that rotate clockwise (based on FIG. 5) and a first belt (212) positioned to wrap around the first pulley (211). Although not shown in the drawing, a separate driving means (not shown) for rotating the first pulley (211) is connected to the first pulley (211), and although the number of first pulleys (211) is shown as 12, this is only an example, and as long as the first belt (212) can rotate and the first belt (212) can come into close contact with one surface (upper surface) of the extension portion (12b) of the battery cell case (12), the number or position of the first pulleys (211) is not particularly limited.

[0080] The second gripping unit (220) is configured to include a plurality of second pulleys (221) that rotate counterclockwise (based on FIG. 5) and a second belt (222) positioned to wrap around the second pulleys (221). Although not shown in the drawing, a separate driving means (not shown) for rotating the second pulleys (221) is connected to the second pulleys (221), and although the number of second pulleys (221) is shown as 12, this is merely an example, and as long as the second belt (222) can rotate and the second belt (222) can come into close contact with the other surface (bottom surface) of the extension portion (12b) of the battery cell case (12), the number or position of the second pulleys (221) is not particularly limited.

[0081] In this way, a gripping portion (200) is provided that moves the battery cell case (12) in the direction of the cutting portion (300) by being in close contact with one side and the other side of the extension portion (12b) of the battery cell case (12), so that the battery cell case (12) can always move at a constant speed.

[0082]

[0083] FIG. 6 is an enlarged perspective view of a cutting section constituting a pouch-type battery cell case processing device according to the present invention, and FIG. 7 is an enlarged front view of a cutting section constituting a pouch-type battery cell case processing device according to the present invention.

[0084] The cut section will be described in detail with reference to FIGS. 3, 4, 6 and 7.

[0085] The cutting member (300) is configured to cut a portion of the extension (12b) of the battery cell case (12) along the cutting line of the extension (12b), and includes a first cutting member (310) in the shape of a disk that is in close contact with one surface of the extension (12b) of the battery cell case (12) in a state perpendicular to the surface, and a second cutting member (320) in the shape of a disk that is in close contact with the other surface of the extension (12b) of the battery cell case (12) in a state perpendicular to the surface. Although not shown in the drawing, a separate driving member (not shown) is provided to rotate the first cutting member (310) counterclockwise (based on FIG. 6) and to rotate the second cutting member (320) clockwise (based on FIG. 6).

[0086] Specifically, the first cutting member (310) may be configured to include a first a body (311) having an inclined surface (311a) provided at the edge and having an outer diameter that increases toward the gripping portion (200), a first b body (312) located on one side of the first a body (311) and having an outer diameter smaller than that of the first a body (311), and a first c body (313) located on one side of the first b body (312).

[0087] Here, it is preferable that a first sealing member (313a) in the shape of a circular belt is further provided on the circumference of the first c body (313) so that it can be in close contact with one side of the extension (12b) of the battery cell case (12). At this time, the first sealing member (313a) may be a silicone or rubber material having excellent sealing force and a certain degree of elasticity.

[0088] The second cutting member (320) may be configured to include a second a body (321) and a second b body (322) positioned on one side of the second a body (321).

[0089] At this time, it is preferable that the second body (321) is composed of a recessed portion (321a) formed along the center of the circumference, a first partition wall (321b) provided on one side of the recessed portion (321a), and a second partition wall (321c) formed on the other side of the recessed portion (321a).

[0090] In addition, it is preferable that a second sealing member (322a) in the shape of a circular belt be further provided on the circumference of the second sealing member (322a) so that it can be in close contact with the other surface of the extension portion (12b) of the battery cell case (12). In this case, the second sealing member (322a) may be a silicone or rubber material having excellent sealing force and a certain degree of elasticity.

[0091] As the cutting section (300) is formed with the aforementioned configuration, the first a body (311) and the first bulkhead (321b) are interlocked, and a portion of the extension section (12b) of the battery cell case (12) is continuously cut.

[0092] In addition, when a part of the extension (12b) of the battery cell case (12) is cut, the outer surface of the first c body (313) and the outer surface of the second sealing member (322a) overlap each other, and when the outer surface width (W1) of the first c body (313) is smaller than the outer surface width (W2) of the second sealing member (322a), it is much easier to adjust the overlapping area between the first a body (311) acting as a cutter and the first partition wall (321b).

[0093] In other words, since the second adhesive member (322a) has a certain elasticity, it can accommodate a part of the first c body (313), so that the position of the edge end of the first a body (311) accommodated in the recessed portion (321a) can be adjusted, and this can also accommodate tolerances that may occur during the manufacturing process of the first cutting member (310) and the second cutting member (320).

[0094] Also, when a part of the extension (12b) of the battery cell case (12) is cut, it is preferable that the upper part of the second partition (321c) of the second a body (321) has a height that can be in close contact with the other surface (bottom surface) of the extension (12b) of the battery cell case (12) so that the extension (12b) of the battery cell case (12) can be maintained in a horizontal state.

[0095] Meanwhile, it is obvious that the rotation speed of the first cutting member (310) and the second cutting member (320) should be controlled to be the same as the transfer speed of the battery cell case (12) by the gripper (200).

[0096]

[0097] FIG. 8 is a cross-sectional view for explaining a guide part constituting a pouch-type battery cell case processing device according to the present invention, and FIG. 9 is an enlarged perspective view of a guide part constituting a pouch-type battery cell case processing device according to the present invention.

[0098] Referring to FIGS. 8 and 9, a guide portion (400) is positioned in front of the cut portion (300) to guide the extension portion (12b) of the battery cell case (12) to the cut portion (300).

[0099] In detail, the guide part (400) may be configured to include a first guide plate (410) positioned above the extension part (12b) of the battery cell case (12), and a second guide plate (420) positioned below the extension part (12b) of the battery cell case (12).

[0100] At this time, so that the extension (12b) of the battery cell case (12) can easily be introduced into the guide portion (400), the entrance side of the guide portion (400) is shaped to become wider as it goes forward. In detail, the front entrance side of the first guide plate (410) is curved upward with a predetermined radius of curvature, and the front entrance side of the second guide plate (420) is curved downward with a predetermined radius of curvature.

[0101] Accordingly, even if a part of the extension (12b) of the battery cell case (12) is slightly bent upward or downward, it can be easily introduced into the guide part (400), which makes it possible to guide the extension (12b) of the battery cell case (12) to the grip part (200) while fundamentally preventing it from folding.

[0102] Meanwhile, the first guide plate (410) and the second guide plate (420) arranged in a vertical direction are connected to each other at one side by a single connecting portion (430), and the second guide plate (420) can be stably positioned by a support portion (440) composed of a plurality of first support portions (441) on the bottom surface.

[0103] Of course, any change is possible as long as the first guide plate (410) and the second guide plate (420) can be stably supported. For example, as shown in Fig. 10, which is a cross-sectional view showing a modified example of a guide part constituting a pouch-type battery cell case processing device according to the present invention, the first guide plate (410) and the second guide plate (420) are arranged vertically parallel, and one or more second support parts (442) extending upwards may be positioned on the upper surface of the first guide plate (410), while one or more third support parts (443) extending downwards may be positioned on the lower surface of the second guide plate (420).

[0104] At this time, a connecting part (430) may be provided as in Fig. 9.

[0105]

[0106] The following describes a method for processing a pouch-type battery cell case according to the present invention. Figure 11 is a flow chart of a method for processing a pouch-type battery cell case according to the present invention. Figure

[0107] Referring to FIGS. 1 to 8 and 11 together, a method for processing a pouch-shaped battery cell case according to the present invention may include a first step of continuously supplying a battery cell case (12) including a pocket portion (12a) and an extension portion (12b) outside the pocket portion (12a) in one direction, a second step of continuously transporting the extension portion (12b) of the battery cell case (12) supplied in the first step in one direction while holding it, and a third step of continuously cutting a portion of the extension portion (12b) of the battery cell case (12) transported in the second step.

[0108] In addition, if necessary, the fourth step of recovering scrap from which the extension portion (12b) of the battery cell case (12) is cut off, and the fifth step of recovering the battery cell case (12) from which a portion of the extension portion (12b) of the battery cell case (12) is cut off may be further included.

[0109] Additionally, between the first and second steps, a step of guiding the extension (12b) of the battery cell case (12) toward the rear may be further included.

[0110] In addition, after the second step, a step of spraying air toward the extension (12b) of the battery cell case (12) may be further included.

[0111]

[0112] As described above, specific parts of the present invention have been described in detail. To those skilled in the art, such specific descriptions are merely preferred embodiments, and the scope of the present invention is not limited thereby. It is obvious to those skilled in the art that various changes and modifications are possible within the scope and technical idea of ​​the present invention, and it is natural that such changes and modifications fall within the scope of the appended patent claims.

[0113] (Explanation of symbols)

[0114] 10: Pouch-type battery cell

[0115] 11: Electrode lead

[0116] 12: Battery cell case

[0117] 12a: Pocket section 12b: Extension section

[0118] 100: Daibu

[0119] 110: Guide bar

[0120] 200: The phasing department

[0121] 210: First Division

[0122] 211: First pulley 212: First belt

[0123] 220: Second Division

[0124] 221: Second pulley 222: Second belt

[0125] 300: Cut section

[0126] 310: First cutting member

[0127] 311: Body 1a 311a: Inclined surface

[0128] 312: Body 1b 313: Body 1c

[0129] 313a: First sealing member

[0130] 320: Second cutting member

[0131] 321: 2a body 321a: depression

[0132] 321b: First bulkhead 321c: Second bulkhead

[0133] 322: 2nd body 322a: 2nd contact member

[0134] 400: Guide Department

[0135] 410: Guide Plate 1

[0136] 420: Second Guide Plate

[0137] 430: Connector

[0138] 440: Support

[0139] 441: First support 442: Second support

[0140] 443: Third Support

[0141] 500: Air injection unit

[0142] 600: Scrap Recovery Unit

[0143] S: Main sealing part

[0144] C: Cutting line

[0145] W1: Outer circumferential width of the 1c body

[0146] W2: Width of the outer surface of the second sealing member

Claims

1. A die portion in which a battery cell case including a pocket portion and an extension portion outside the pocket portion is mounted; A gripping part that grips the extension of the battery cell case and moves it to one side; and A cutting section for cutting a portion of the extended portion of the battery cell case that is transported and located between the die section and the grip section; A processing device for a pouch-type battery cell case, characterized in that the above die is a conveyor that moves continuously toward one side.

2. In paragraph 1, A processing device for a pouch-type battery cell case, characterized in that the gripping part includes a first gripping part that is in close contact with one surface of the extension part of the battery cell case, and a second gripping part that is in close contact with the other surface of the extension part of the battery cell case.

3. In paragraph 2, The first grip section includes a plurality of first pulleys and a first belt positioned to wrap around the first pulleys, A processing device for a pouch-shaped battery cell case, characterized in that the second grip section includes a plurality of second pulleys and a second belt positioned to wrap around the second pulleys.

4. In paragraph 2, The above-mentioned cutting part includes a first cutting member in the shape of a disk that is in close contact with one side of the extension of the battery cell case in a state perpendicular to the extension of the battery cell case, and a second cutting member in the shape of a disk that is in close contact with the other side of the extension of the battery cell case in a state perpendicular to the extension of the battery cell case. A processing device for a pouch-shaped battery cell case, characterized in that the extension portion of the battery cell case is continuously cut by rotating the first cutting member and the second cutting member together.

5. In paragraph 4, The first cutting member includes a first body having an inclined surface at an edge and an outer diameter that increases toward the grip portion, and a first body having an outer diameter that is located on one side of the first body and is smaller than that of the first body. The second cutting member includes a second body a, which is composed of a recessed portion formed along the center of the circumference, a first bulkhead provided on one side of the recessed portion, and a second bulkhead formed on the other side of the recessed portion. A processing device for a pouch-type battery cell case, characterized in that a portion of the extension of the battery cell case is cut off when the first a body and the first bulkhead are interlocked.

6. In paragraph 5, The first cutting member further includes a first c body positioned on one side of the first b body, and a first contact member in the shape of a circular belt that is in close contact with one side of the extension of the battery cell case is provided on the circumference of the first c body. A processing device for a pouch-type battery cell case, characterized in that the second cutting member further includes a second b body positioned on one side of the second a body, and a second contact member in the shape of a circular belt is provided on the circumference of the second b body to be in close contact with the other surface of the extension of the battery cell case.

7. In paragraph 6, A processing device for a pouch-type battery cell case, characterized in that the first sealing member and the second sealing member are made of silicone or rubber.

8. In paragraph 7, A processing device for a pouch-type battery cell case, characterized in that the outer circumferential width of the 1c body is smaller than the outer circumferential width of the second sealing member, and when a portion of the extension of the battery cell case is cut, the outer circumferential surface of the 1c body is positioned to overlap the outer circumferential surface of the second sealing member.

9. In paragraph 5, A processing device for a pouch-type battery cell case, characterized in that the second bulkhead of the second a body supports the other surface of the extension portion of the battery cell case when the extension portion of the battery cell case is cut.

10. In paragraph 2, A processing device for a pouch-type battery cell case, characterized in that a guide part is further provided in front of the cutting part to guide the extension part of the battery cell case to the cutting part.

11. In paragraph 10, A processing device for a pouch-type battery cell case, characterized in that the guide part includes a first guide plate positioned on the upper part of the extension part of the battery cell case, and a second guide plate positioned on the lower part of the extension part of the battery cell case.

12. In paragraph 11, The front entrance side of the above first guide plate is curved upward with a predetermined radius of curvature, A processing device for a pouch-shaped battery cell case, characterized in that the front entrance side of the second guide plate is bent downward with a predetermined radius of curvature.

13. In paragraph 2, A processing device for a pouch-type battery cell case, characterized in that it further comprises an air injection unit that injects air toward an extension of the battery cell case.

14. In paragraph 2, A processing device for a pouch-type battery cell case, characterized in that it further comprises a scrap recovery unit for recovering scrap from which a portion of the extension of the battery cell case is cut off.

15. A first step of continuously supplying a battery cell case including a pocket portion and an extension portion outside the pocket portion in one direction; A second step of continuously transporting the extended portion of the battery cell case supplied in the first step in one direction while holding it; and A method for processing a pouch-shaped battery cell case, characterized in that it comprises a third step of continuously cutting a portion of an extension of a battery cell case transferred in the second step.

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