Bag-shaped battery cell shell processing equipment and processing method using same

Abstract

The invention relates to the field of battery processing, and discloses a bag-shaped battery cell shell processing device and a processing method using the bag-shaped battery cell shell processing device, and particularly discloses the bag-shaped battery cell shell processing device and the processing method using the bag-shaped battery cell shell processing device. The mold unit is configured to allow a battery cell case including a pouch portion and an extension portion provided outside the pouch portion to be placed on the mold unit; the clamping unit is configured to convey the extension part of the battery cell shell to one side while clamping the extension part of the battery cell shell; the cutting unit is located between the mold unit and the clamping unit, the cutting unit is constructed to cut a part of an extending part of a battery cell shell which is being conveyed, and the mold unit is a conveying device which is constructed to continuously move towards one side.

Description

Technical Field

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

[0002] This invention relates to a pouch-shaped battery cell casing processing apparatus and a processing method thereon, and more specifically, to a pouch-shaped battery cell casing processing apparatus and a processing method thereon capable of continuously cutting extended portions of the pouch-shaped battery cell casing. Background Technology

[0003] With the technological advancements and increasing demands of mobile devices, rechargeable and dischargeable batteries have been adopted as an energy source for various mobile devices. Rechargeable batteries have also attracted attention as an energy source for electric and hybrid vehicles, which are seen as alternatives to existing gasoline and diesel vehicles that use fossil fuels.

[0004] Based on the shape of the battery casing, secondary batteries are classified into cylindrical batteries with electrode assemblies installed in cylindrical metal cans, square batteries with electrode assemblies installed in square metal cans, and pouch batteries with electrode assemblies installed in pouch-shaped casings made of aluminum laminates.

[0005] In a typical pouch cell manufacturing process, the steps of inserting electrode assemblies into the receiving space of a battery casing made of laminates are performed sequentially, the steps of injecting electrolyte solution into the battery casing are performed, the steps of sealing the battery casing are performed, and the activation steps are performed.

[0006] In the activation step, gas is generated through a chemical reaction between lithium and the electrolyte solution in the secondary battery, and the gas is collected in a gas bag section and then removed during the degassing process.

[0007] Once gas collection is complete, the gas bag section is no longer needed in the completed secondary battery, so a portion of the casing including the gas bag section is removed through pre-cutting and main cutting.

[0008] However, pre-cutting, including the main cut, is usually performed when the battery casing is stationary, resulting in slow processing speed.

[0009] (Existing technical documents)

[0010] (Patent Document 1) Korean Patent Application Publication No. 10-2022-0064751 Summary of the Invention

[0011] Technical issues

[0012] The present invention was made in view of the above-mentioned problems, and the object of the present invention is to provide a pouch battery cell housing processing apparatus and a processing method thereon, the pouch battery cell housing processing apparatus being able to perform a cutting process during continuous conveying of the pouch battery cell housing while cutting the pouch battery cell housing after an activation step.

[0013] Technical solution

[0014] According to the invention, a pouch-shaped battery cell housing processing apparatus for achieving the above-mentioned objectives comprises: a mold unit (100) configured to allow a battery cell housing (12) to be placed thereon, the battery cell housing (12) including a pouch portion (12a) and an extension portion (12b) disposed outside the pouch portion (12a); a clamping unit (200) configured to convey the extension portion (12b) of the battery cell housing (12) to one side while clamping the extension portion (12b) of the battery cell housing (12); and a cutting unit (300) located between the mold unit (100) and the clamping unit (200), the cutting unit being configured to cut a portion of the extension portion (12b) of the conveyed battery cell housing (12), wherein the mold unit (100) is a conveying device configured to move continuously toward one side.

[0015] Furthermore, in the pouch-shaped battery cell housing processing apparatus according to the present invention, the clamping unit (200) may include a first clamping unit (210) that is in close contact with one surface of the extension portion (12b) of the battery cell housing (12) and a second clamping unit (220) that is in close contact with the other surface of the extension portion (12b) of the battery cell housing (12).

[0016] Furthermore, in the pouch-shaped battery cell casing processing equipment according to the present invention, the first clamping unit (210) may include a plurality of first pulleys (211) and a first belt (212) positioned to wrap around the first pulleys (211), and the second clamping unit (220) may include a plurality of second pulleys (221) and a second belt (222) positioned to wrap around the second pulleys (221).

[0017] Furthermore, in the pouch-shaped battery cell housing processing apparatus according to the present invention, the cutting unit (300) may include a disk-shaped first cutting member (310) that is in close contact with one surface of the extension portion (12b) of the battery cell housing (12) at a right angle and a disk-shaped second cutting member (320) that is in close contact with the other surface of the extension portion (12b) of the battery cell housing (12) at a right angle, and the extension portion (12b) of the battery cell housing (12) may be continuously cut when the first cutting member (310) and the second cutting member (320) rotate together.

[0018] Furthermore, in the pouch-shaped battery cell casing processing equipment according to the present invention, the first cutting member (310) may include a first body (311) and a first body (312), the first body (311) having an inclined surface (311a) disposed at its edge, the outer diameter of the first body gradually increasing toward the clamping unit (200), the first body (312) being located on one side of the first body (311), the outer diameter of the first body being smaller than the outer diameter of the first body (311), the first... The second cutting component (320) may include a second body (321), which includes a recess (321a) formed along the center of its circumferential surface, a first partition wall (321b) disposed on one side of the recess (321a) and a second partition wall (321c) formed on the other side of the recess (321a), and when the first body (311) and the first partition wall (321b) engage with each other, a portion of the extension (12b) of the battery cell housing (12) can be cut.

[0019] Furthermore, in the pouch-shaped battery cell casing processing apparatus according to the present invention, the first cutting member (310) may further include a first c body (313) located on one side of the first b body (312), the first c body (313) having a circular strip-shaped first close contact member (313a) that is in close contact with one surface of the extension portion (12b) of the battery cell casing (12) on its circumferential surface, and the second cutting member (320) may further include a second b body (322) located on one side of the second a body (321), the second b body (322) having a circular strip-shaped second close contact member (322a) that is in close contact with the other surface of the extension portion (12b) of the battery cell casing (12) on its circumferential surface.

[0020] Furthermore, in the pouch-shaped battery cell casing processing equipment according to the present invention, each of the first tight contact member (313a) and the second tight contact member (322a) may be made of silicone or rubber.

[0021] Furthermore, in the pouch-shaped battery cell housing processing apparatus according to the present invention, the width of the outer peripheral surface of the first c body (313) may be less than the width of the outer peripheral surface of the second close contact member (322a), and when a portion of the extension (12b) of the battery cell housing (12) is cut, the outer peripheral surface of the first c body (313) may be positioned to overlap with the outer peripheral surface of the second close contact member (322a).

[0022] Furthermore, in the bag-shaped battery cell housing processing equipment according to the present invention, when the extension portion (12b) of the battery cell housing (12) is cut, the second partition wall (321c) of the second body (321) can support the other surface of the extension portion (12b) of the battery cell housing (12).

[0023] Furthermore, the pouch-shaped battery cell housing processing apparatus according to the present invention may also include a guide unit (400) disposed in front of the cutting unit (300), the guide unit being configured to guide the extension portion (12b) of the battery cell housing (12) to the cutting unit (300).

[0024] Furthermore, in the pouch-shaped battery cell housing processing equipment according to the present invention, the guiding unit (400) may include a first guiding plate (410) located above the extension portion (12b) of the battery cell housing (12) and a second guiding plate (420) located below the extension portion (12b) of the battery cell housing (12).

[0025] Furthermore, in the pouch-shaped battery cell casing processing apparatus according to the present invention, the front inlet side of the first guide plate (410) can be bent upward with a predetermined radius of curvature, and the front inlet side of the second guide plate (420) can be bent downward with a predetermined radius of curvature.

[0026] Furthermore, the pouch-shaped battery cell housing processing apparatus according to the present invention may also include an air blowing unit (500) configured to blow air toward an extension (12b) of the battery cell housing (12).

[0027] Furthermore, the bag-shaped battery cell housing processing equipment according to the present invention may also include a waste collection unit (600) configured to collect waste, which is a cut portion of the extension (12b) of the battery cell housing (12).

[0028] Furthermore, the pouch-shaped battery cell housing processing method according to the present invention includes the following steps: a first step in which a battery cell housing is continuously supplied in one direction, the battery cell housing including a pouch portion and an extension portion disposed outside the pouch portion; a second step in which the extension portion of the battery cell housing is continuously conveyed in one direction while clamping the extension portion of the battery cell housing supplied in the first step; and a third step in which a portion of the extension portion of the battery cell housing conveyed in the second step is continuously cut.

[0029] Beneficial effects

[0030] In the pouch-shaped battery cell casing processing apparatus and processing method according to the present invention, the pouch-shaped battery cell casing processing apparatus includes a pair of clamping units that are in close contact with two surfaces of an extension portion of the battery cell casing and a pair of disc-shaped cutting units configured to rotate, thereby enabling the cutting process to be performed while the pouch-shaped battery cell casing is being continuously conveyed, which can help increase the production speed of pouch-shaped secondary batteries.

[0031] Furthermore, in the pouch-shaped battery cell housing processing apparatus and processing method using the same according to the present invention, the pouch-shaped battery cell housing processing apparatus further includes a guide unit disposed in front of the clamping unit to guide the extension portion of the battery cell housing, thereby guiding the extension portion of the battery cell housing to the clamping unit without folding it even if a portion of the extension portion of the battery cell housing is slightly bent upward or downward. Attached Figure Description

[0032] Figure 1 This is a plan view of a pouch battery cell.

[0033] Figure 2 This is a conceptual diagram of a pouch-shaped battery cell casing processing equipment according to the present invention.

[0034] Figure 3 This shows the pouch-shaped battery cell casing being... Figure 2 The image shows a perspective view of the cutting process of the bag-shaped battery cell casing.

[0035] Figure 4 This shows the pouch-shaped battery cell casing being... Figure 2 The image shows a front view of the cutting process of the bag-shaped battery cell casing.

[0036] Figure 5 This is an enlarged perspective view of the clamping unit constituting the bag-shaped battery cell housing processing equipment according to the present invention.

[0037] Figure 6This is an enlarged perspective view of the cutting unit constituting the bag-shaped battery cell casing processing equipment according to the present invention.

[0038] Figure 7 This is an enlarged front view of the cutting unit that constitutes the bag-shaped battery cell casing processing equipment according to the present invention.

[0039] Figure 8 This is a cross-sectional view showing the guide unit constituting the bag-shaped battery cell housing processing equipment according to the present invention.

[0040] Figure 9 This is an enlarged perspective view of the guide unit constituting the bag-shaped battery cell casing processing equipment according to the present invention.

[0041] Figure 10 This is a cross-sectional view showing a variation of the guide unit constituting the bag-shaped battery cell housing processing apparatus according to the present invention.

[0042] Figure 11 This is a flowchart of the processing method for the pouch-shaped battery cell casing according to the present invention. Detailed Implementation

[0043] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, enabling those skilled in the art to readily implement these preferred embodiments. However, in describing the operational principles of the preferred embodiments of the present invention, detailed descriptions of known functions and structures incorporated herein may obscure the subject matter of the invention, and will therefore be omitted.

[0044] Furthermore, the same reference numerals will be used throughout the drawings to refer to parts that perform similar functions or operations. Where one part is referred to as "connected to another part" throughout the specification, not only can one part be directly connected to another part, but one part can also be indirectly connected to another part via another part. Moreover, including a predetermined element does not imply the exclusion of other elements, but rather means that these elements may be further included unless otherwise specified.

[0045] The following describes the pouch-shaped battery cell casing processing apparatus and the processing method using the same according to the present invention.

[0046] Figure 1 This is a plan view of a pouch cell. (Refer to...) Figure 1 The pouch-shaped battery cell 10 includes an electrode assembly (not shown) and a battery cell housing 12. The electrode assembly has a pair of electrode leads 11 positioned opposite each other. The battery cell housing 12 has a pouch portion 12a configured to accommodate the electrode assembly (not shown) and an extension portion 12b disposed outside the pouch portion 12a.

[0047] The main sealing portion S, configured to prevent leakage of electrolyte solution, is located in the extension portion 12b, and the cutting line C is located outside the main sealing portion S.

[0048] In other words, in this invention, during the main cutting step (i.e., after the activation process, degassing process, pre-cutting, and main sealing), a portion of the extension 12b is cut along the cutting line C of the extension 12b located outside the pouch portion 12a of the battery cell housing 12. Of course, the device according to the invention can also be used in the pre-cutting step of the battery cell housing 12.

[0049] Meanwhile, the electrode assembly (not shown) housed in the bag portion 12a can be: a core-wound type electrode assembly, which is configured to have a structure in which a long sheet-type negative electrode and a long sheet-type positive electrode are wound in a state where a diaphragm is inserted therebetween; a stacked type electrode assembly including unit cells, each unit cell being configured to have a structure in which a rectangular positive electrode and a rectangular negative electrode are stacked in a state where a diaphragm is inserted therebetween; a stacked folded type electrode assembly, which is configured to have a structure in which a unit cell is wound using a long separator film; or a laminated and stacked type electrode assembly, which is configured to have a structure in which unit cells are stacked in a state where a diaphragm is inserted therebetween and then attached to each other; however, the present invention is not limited thereto.

[0050] The positive electrode comprises a positive current collector and a positive active material applied to each of the upper and lower surfaces of the positive current collector. The positive active material may be mixed with a conductive agent and a binder, and fillers may be further added if necessary.

[0051] The negative electrode includes a negative electrode current collector and a negative electrode active material applied to each of the upper and lower surfaces of the negative electrode current collector. The negative electrode active material may be further mixed with a conductive agent and a binder, and the negative electrode current collector may be coated with the mixture.

[0052] The separator prevents short circuits between the negative and positive electrodes and allows only lithium ions to migrate. Preferably, the separator is made of any one selected from polyethylene, polypropylene, polyethylene / polypropylene bilayer, polyethylene / polypropylene / polypropylene trilayer, polypropylene / polypropylene / polypropylene trilayer, and organic fiber filter paper; however, the invention is not limited thereto.

[0053] In addition, the pouch portion 12a of the battery cell casing 12 is formed using a laminate including an outer cover layer, a metal layer and an inner cover layer.

[0054] The inner cover layer is in direct contact with the electrode assembly, therefore it must exhibit high insulation properties and high electrolytic resistance. Furthermore, the inner cover layer must exhibit high sealing performance to hermetically isolate the battery casing from the outside; that is, the thermally bonded seal between the inner layers must exhibit excellent thermal bond strength.

[0055] The inner cover layer may be made of a material selected from polyolefin-based resins (e.g., polypropylene, polyethylene, polyacrylate, or polybutene), polyurethane resins, and polyimide resins that exhibit excellent chemical resistance and high sealing performance; however, the invention is not limited thereto, and polypropylene that exhibits excellent mechanical properties (e.g., tensile strength, rigidity, surface hardness, and impact resistance) and excellent chemical resistance is most preferred.

[0056] The metal layer adjacent to the inner cover layer corresponds to a barrier layer constructed to prevent moisture or various gases from penetrating into the battery from the outside. Lightweight and easily formed aluminum film is a preferred material for the metal layer.

[0057] An outer cover layer is disposed on the other surface of the metal layer, and the outer cover layer may be made of a heat-resistant polymer that exhibits excellent tensile strength, resistance to moisture penetration, and resistance to air permeability, thereby giving the outer cover layer high heat resistance and chemical resistance while protecting the electrode assembly. As an example, the outer cover layer may be made of nylon or polyethylene terephthalate; however, the invention is not limited thereto.

[0058] Figure 2 This is a conceptual diagram of a pouch-shaped battery cell casing processing equipment according to the present invention. Figure 3 This shows the pouch-shaped battery cell casing being... Figure 2 The diagram shows a perspective view of the cutting process of the pouch-shaped battery cell casing, and... Figure 4 This shows the pouch-shaped battery cell casing being... Figure 2 The image shows a front view of the cutting process of the bag-shaped battery cell casing.

[0059] Reference Figures 1 to 4 The pouch-shaped battery cell casing processing equipment according to the present invention includes a mold unit 100, a clamping unit 200 and a cutting unit 300, and may include at least one of a guiding unit 400, an air blowing unit 500 and a waste collection unit 600 as needed.

[0060] First, the battery cell housing 12, including the bag portion 12a and the extension portion 12b disposed outside the bag portion 12a, is placed on the mold unit 100. In this case, the mold unit 100 is preferably a conveying device that can be oriented to one side (in Figure 2 The extension 12b moves continuously in the 8 o'clock direction, so that a portion of the extension 12b can be cut during the continuous supply of the battery cell housing 12.

[0061] Furthermore, preferably, the guide rod 110 is disposed near one edge of the upper surface of the mold unit 100 so as to extend in the longitudinal direction. When the guide rod 110 is disposed, the battery cell housing 12 can be easily aligned. For example, when one side surface of the pouch portion 12a is positioned in close contact with one side surface of the guide rod 110, the battery cell housing 12 to be processed can be precisely aligned.

[0062] The clamping unit 200 is located at one edge of the mold unit 100 (in Figure 2 (at the 4 o'clock position) to transfer the extension 12b of the battery cell housing 12 to one side while clamping the extension 12b of the battery cell housing 12.

[0063] The cutting unit 300 is located between the mold unit 100 and the clamping unit 200 to cut a portion of the extension 12b of the battery cell housing 12 being conveyed along the cutting line C.

[0064] Additionally, the guide unit 400 that guides the extension portion 12b of the battery cell housing 12 to the cutting unit 300 is positioned in front of the cutting unit 300.

[0065] Details of the clamping unit 200, the cutting unit 300, and the guiding unit 400 will be described later.

[0066] Meanwhile, when the extension portion 12b of the battery cell casing 12 is cut, not only can a part of the extension portion 12b (i.e., waste) be cut along the cutting line C, but small debris may also be generated during the cutting process.

[0067] If the next process is performed while fine debris adheres to the battery cell casing 12 or electrode leads, the battery cell may be defective. Furthermore, if fine debris adheres to the cutting unit 300, precise cutting may be difficult.

[0068] Therefore, it is preferable to provide an air blowing unit 500, which is configured to prevent debris generated during the cutting process from adhering to the battery cell housing 12, electrode leads, and cutting unit 300. The air blowing unit 500 can be positioned to blow air toward the extension 12b of the battery cell housing 12 and the cutting unit 300, and there are no particular limitations on the type of air blowing unit or the blowing method, as long as air can be blown.

[0069] The waste collection unit 600 is configured to collect waste, which is a cut portion of the extension 12b, and may have a box-shaped structure with an open top and a certain volume.

[0070] Figure 5This is an enlarged perspective view of the clamping unit constituting the pouch-shaped battery cell casing processing apparatus according to the present invention. (Refer to...) Figures 3 to 5 Describe the clamping unit in detail.

[0071] The clamping unit 200 clamps the extension portion 12b of the battery cell housing 12 while conveying the extension portion 12b of the battery cell housing 12 in the direction toward the cutting unit 300. The clamping unit 200 includes a first clamping unit 210 that is in close contact with one surface of the extension portion 12b of the battery cell housing 12 and a second clamping unit 220 that is in close contact with the other surface of the extension portion 12b of the battery cell housing 12.

[0072] The first clamping unit 210 includes a plurality of first pulleys 211 configured to rotate clockwise. Figure 5 The first pulley 211 is positioned to wrap around the first pulley 211. Although not shown in the figure, a separate drive unit (not shown) configured to rotate the first pulley 211 is connected to the first pulley 211. In addition, although twelve first pulleys 211 are shown, this is only an example, and there is no particular limitation on the number or position of the first pulleys 211, as long as the first belt 212 can rotate and the first belt 212 can be in close contact with one surface (upper surface) of the extension 12b of the battery cell housing 12.

[0073] The second clamping unit 220 includes a plurality of second pulleys 221 configured to rotate counterclockwise. Figure 5 The second belt 222 is positioned to wrap around the second pulley 221. Although not shown in the figure, a separate drive unit (not shown) configured to rotate the second pulley 221 is connected to the second pulley 221. In addition, although twelve second pulleys 221 are shown, this is only an example, and there is no particular limitation on the number or position of the second pulleys 221, as long as the second belt 222 can rotate and the second belt 222 can be in close contact with the other surface (lower surface) of the extension 12b of the battery cell housing 12.

[0074] Thus, a clamping unit 200 is provided, which, with one surface of the extension portion 12b of the battery cell housing 12 in close contact with the other surface, moves the battery cell housing 12 in the direction toward the cutting unit 300, thereby allowing the battery cell housing 12 to always move at a constant speed.

[0075] Figure 6 This is an enlarged perspective view of the cutting unit constituting the pouch-shaped battery cell casing processing equipment according to the present invention, and Figure 7 This is an enlarged front view of the cutting unit that constitutes the bag-shaped battery cell casing processing equipment according to the present invention.

[0076] Reference Figure 3 , Figure 4 , Figure 6 and Figure 7 Describe the cutting unit in detail.

[0077] The cutting unit 300 is configured to cut a portion of the extension 12b of the battery cell housing 12 along a cutting line of the extension 12b, and includes a disk-shaped first cutting member 310 in close contact with one surface of the extension 12b at a right angle and a disk-shaped second cutting member 320 in close contact with the other surface of the extension 12b at a right angle. Although not shown in the figure, a separate drive member (not shown) is provided, which is configured to rotate the first cutting member 310 counterclockwise (in... Figure 6 (in the middle) and rotate the second cutting member 320 clockwise (in Figure 6 middle).

[0078] Specifically, the first cutting member 310 may include: a first a body 311 having an inclined surface 311a disposed at its edge, the outer diameter of the first a body gradually increasing toward the clamping unit 200; a first b body 312 located on one side of the first a body 311, the outer diameter of the first b body 312 being smaller than the outer diameter of the first a body 311; and a first c body 313 located on one side of the first b body 312.

[0079] Preferably, the circular strip-shaped first tight contact member 313a is further disposed on the circumferential surface of the first c body 313 so as to make tight contact with a surface of the extension portion 12b of the battery cell housing 12. In this case, the first tight contact member 313a may be made of silicone or rubber with excellent adhesion and a certain degree of elasticity.

[0080] The second cutting member 320 may include a second a main body 321 and a second b main body 322 located on one side of the second a main body 321.

[0081] In this case, it is preferable that the second body 321 includes a recess 321a formed along the center of its circumferential surface, a first partition wall 321b disposed on one side of the recess 321a, and a second partition wall 321c formed on the other side of the recess 321a.

[0082] Alternatively, preferably, a circular strip-shaped second tight contact member 322a is further disposed on the circumferential surface of the second tight contact member 322a so as to make tight contact with the other surface of the extension portion 12b of the battery cell housing 12. In this case, the second tight contact member 322a can be made of silicone or rubber with excellent adhesion and a certain degree of elasticity.

[0083] When the cutting unit 300 is constructed as described above, the first body 311 and the first partition wall 321b engage with each other, thereby continuously cutting a portion of the extension 12b of the battery cell housing 12.

[0084] Furthermore, when a portion of the extension 12b of the battery cell housing 12 is cut, the outer peripheral surface of the first c body 313 and the outer peripheral surface of the second tight contact member 322a overlap each other, and when the width W1 of the outer peripheral surface of the first c body 313 is less than the width W2 of the outer peripheral surface of the second tight contact member 322a, it is easier to adjust the overlapping area between the first a body 311, which serves as the cutter, and the first partition wall 321b.

[0085] In other words, since the second close contact member 322a has a certain degree of elasticity, the second close contact member can accommodate a portion of the first c body 313, thereby adjusting the position of the end of the edge of the first a body 311 accommodated in the recess 321a (which may correspond to the tolerances that may occur during the manufacturing process of the first cutting member 310 and the second cutting member 320).

[0086] In addition, when a portion of the extension 12b of the battery cell housing 12 is cut, it is preferable that the upper end of the second partition wall 321c of the second body 321 has a height that is in close contact with the other surface (lower surface) of the extension 12b of the battery cell housing 12, so that the extension 12b of the battery cell housing 12 can remain in a horizontal state.

[0087] At the same time, it is obvious that the rotational speed of the first cutting member 310 and the second cutting member 320 must be controlled to be the same as the transmission speed of the battery cell housing 12 controlled by the clamping unit 200.

[0088] Figure 8 This is a cross-sectional view showing the guide unit constituting the pouch-shaped battery cell housing processing apparatus according to the present invention, and Figure 9 This is an enlarged perspective view of the guide unit constituting the bag-shaped battery cell casing processing equipment according to the present invention.

[0089] Reference Figure 8 and Figure 9The extension 12b of the battery cell housing 12 is guided to the guide unit 400 of the cutting unit 300 and positioned in front of the cutting unit 300.

[0090] Specifically, the guiding unit 400 may include a first guiding plate 410 located above the extension 12b of the battery cell housing 12 and a second guiding plate 420 located below the extension 12b of the battery cell housing 12.

[0091] In this configuration, the entrance side of the guide unit 400 gradually widens towards the front, allowing the extension portion 12b of the battery cell housing 12 to be easily introduced into the guide unit 400. In other words, the front entrance side of the first guide plate 410 bends upward with a predetermined radius of curvature, and the front entrance side of the second guide plate 420 bends downward with a predetermined radius of curvature.

[0092] Therefore, even if a portion of the extension 12b of the battery cell housing 12 is slightly bent upward or downward, the extension can be easily introduced into the guide unit 400, which allows the extension 12b of the battery cell housing 12 to be guided into the clamping unit 200 while fundamentally preventing it from folding.

[0093] Meanwhile, the first guide plate 410 and the second guide plate 420, which are arranged side by side in the vertical direction, are connected to each other by a single connecting portion 430 on each side, and the second guide plate 420 can be stably positioned by a support portion 440 composed of a plurality of first support portions 441 provided on its lower surface.

[0094] Of course, any changes are possible as long as the first guide plate 410 and the second guide plate 420 can be stably supported. For example, such as Figure 10 As shown (this figure is a cross-sectional view illustrating a variation of the guide unit constituting the bag-shaped battery cell housing processing apparatus according to the present invention), the first guide plate 410 and the second guide plate 420 are arranged side by side in the vertical direction, one or more second support portions 442 extending upward may be located on the upper surface of the first guide plate 410, and one or more third support portions 443 extending downward may be located on the lower surface of the second guide plate 420.

[0095] In this case, connection part 430 can be configured, such as... Figure 9 As shown.

[0096] Next, a method for processing the pouch-shaped battery cell casing according to the present invention will be described. Figure 11 This is a flowchart of the processing method for the pouch-shaped battery cell casing according to the present invention.

[0097] Reference Figures 1 to 8 and Figure 11The pouch-shaped battery cell housing processing method according to the present invention may include: a first step, wherein a battery cell housing 12 is continuously supplied in one direction, the battery cell housing 12 including a pouch portion 12a and an extension portion 12b disposed outside the pouch portion 12a; a second step, wherein the extension portion 12b of the battery cell housing 12 supplied in the first step is clamped while the extension portion 12b of the battery cell housing 12 is continuously conveyed in one direction; and a third step, wherein a portion of the extension portion 12b of the battery cell housing 12 conveyed in the second step is continuously cut.

[0098] In addition, if necessary, the method may also include: a fourth step, which collects waste material cut from the extension 12b of the battery cell housing 12; and a fifth step, which collects a portion of the extension 12b of the battery cell housing 12 from which a portion of the battery cell housing 12 has been cut.

[0099] In addition, the method may also include a step of guiding the extension portion 12b of the battery cell housing 12 backward between the first step and the second step.

[0100] In addition, the method may also include a step of blowing air toward the extension 12b of the battery cell housing 12 after the second step.

[0101] Although the specific details of the invention have been described in detail, those skilled in the art will understand that the detailed description only discloses preferred embodiments of the invention and therefore does not limit the scope of the invention. Consequently, those skilled in the art will understand that various changes and modifications are possible without departing from the category and technical spirit of the invention, and it will be apparent that such changes and modifications fall within the scope of the appended claims.

[0102] (Description of reference numerals in the attached figures)

[0103] 10: Pouch cell

[0104] 11: Electrode leads

[0105] 12: Battery cell casing

[0106] 12a: Bag portion; 12b: Extension portion

[0107] 100: Mold Unit

[0108] 110: Guide rod

[0109] 200: Clamping unit

[0110] 210: First clamping unit

[0111] 211: First pulley 212: First belt

[0112] 220: Second clamping unit

[0113] 221: Second pulley 222: Second belt

[0114] 300: Cutting unit

[0115] 310: First cutting component

[0116] 311: Main body 1a; 311a: Inclined surface

[0117] 312: Subject 1b 313: Subject 1c

[0118] 313a: First close contact member

[0119] 320: Second cutting component

[0120] 321: 2nd main body 321a: concave portion

[0121] 321b: First partition wall; 321c: Second partition wall

[0122] 322: Main body 2b; 322a: Second close contact member

[0123] 400: Guiding Unit

[0124] 410: First Guide Board

[0125] 420: Second guide plate

[0126] 430: Connection part

[0127] 440: Support section

[0128] 441: First support section; 442: Second support section

[0129] 443: Third Support Section

[0130] 500: Air blowing unit

[0131] 600: Waste Collection Unit

[0132] S: Main sealing section

[0133] C: Cutting line

[0134] W1: Width of the outer peripheral surface of the first c-th body

[0135] W2: Width of the outer peripheral surface of the second close contact member

Claims

1. A pouch-shaped battery cell casing processing equipment, the pouch-shaped battery cell casing processing equipment comprising: A mold unit configured to house a battery cell housing, the battery cell housing including a pouch portion and an extension outside the pouch portion; A clamping unit configured to clamp the extension of the battery cell housing while conveying the extension of the battery cell housing to one side; as well as A cutting unit, located between the mold unit and the clamping unit, is configured to cut a portion of the extension of the battery cell casing being conveyed. The mold unit is a conveyor device configured to move continuously to one side.

2. The pouch-shaped battery cell casing processing equipment according to claim 1, wherein, The clamping unit includes: A first clamping unit is in close contact with a surface of the extension portion of the battery cell housing; and The second clamping unit is in close contact with another surface of the extension portion of the battery cell housing.

3. The pouch-shaped battery cell casing processing equipment according to claim 2, wherein, The first clamping unit includes a plurality of first pulleys and a first belt positioned to wrap around the first pulleys, and The second clamping unit includes a plurality of second pulleys and a second belt positioned to wrap around the second pulleys.

4. The pouch-shaped battery cell casing processing equipment according to claim 2, wherein, The cutting unit includes a disk-shaped first cutting member that is in close contact with one surface of the extended portion of the battery cell housing at a right angle, and a disk-shaped second cutting member that is in close contact with the other surface of the extended portion of the battery cell housing at a right angle. When the first cutting member and the second cutting member rotate together, the extended portion of the battery cell housing is continuously cut.

5. The pouch-shaped battery cell casing processing equipment according to claim 4, wherein, The first cutting member includes a first body (1a) and a first body (1b). The first body (1a) has an inclined surface at its edge, and the outer diameter of the first body (1a) gradually increases towards the clamping unit. The first body (1b) is located on one side of the first body (1a), and the outer diameter of the first body (1b) is smaller than the outer diameter of the first body (1a). The second cutting member includes a second body, which is composed of a recess formed along the center of the circumferential surface of the second body, a first partition wall disposed on one side of the recess, and a second partition wall formed on the other side of the recess. When the first body and the first partition wall engage with each other, a portion of the extension of the battery cell housing is cut off.

6. The pouch-shaped battery cell casing processing equipment according to claim 5, wherein, The first cutting member further includes a first body located on one side of the first body 1b, the first body 1c having a circular strip-shaped first close contact member on its circumferential surface that is in close contact with one surface of the extended portion of the battery cell housing, and The second cutting member further includes a second body located on one side of the second body, the second body having a circular strip-shaped second close contact member on its circumferential surface that is in close contact with the other surface of the extension portion of the battery cell housing.

7. The pouch-shaped battery cell casing processing equipment according to claim 6, wherein, Each of the first tight contact member and the second tight contact member is made of silicone or rubber.

8. The pouch-shaped battery cell casing processing equipment according to claim 7, wherein, The width of the outer peripheral surface of the first c body is smaller than the width of the outer peripheral surface of the second closely contacting member, and When a portion of the extension of the battery cell housing is cut, the outer peripheral surface of the first c body is positioned to overlap with the outer peripheral surface of the second close contact member.

9. The pouch-shaped battery cell casing processing equipment according to claim 5, wherein, When the extended portion of the battery cell housing is cut, the second partition wall of the second a body supports the other surface of the extended portion of the battery cell housing.

10. The pouch-shaped battery cell housing processing apparatus according to claim 2, further comprising a guide unit disposed in front of the cutting unit, the guide unit being configured to guide the extended portion of the battery cell housing to the cutting unit.

11. The pouch-shaped battery cell casing processing equipment according to claim 10, wherein, The guiding unit includes: A first guide plate, the first guide plate being located above the extension portion of the battery cell housing; and A second guide plate is located below the extension portion of the battery cell housing.

12. The pouch-shaped battery cell casing processing equipment according to claim 11, wherein, The front inlet side of the first guide plate is curved upwards with a predetermined radius of curvature, and The front inlet side of the second guide plate is bent downwards with a predetermined radius of curvature.

13. The pouch-shaped battery cell housing processing apparatus according to claim 2, further comprising an air blowing unit configured to blow air toward the extension portion of the battery cell housing.

14. The pouch-shaped battery cell casing processing equipment according to claim 2, the pouch-shaped battery cell casing processing equipment further includes a waste collection unit, the waste collection unit being configured to collect waste, the waste being the cut portion of the extended portion of the battery cell casing.

15. A method for processing a pouch-shaped battery cell casing, the method comprising the following steps: In the first step, a battery cell housing is continuously supplied in one direction, the battery cell housing including a pouch portion and an extension portion disposed outside the pouch portion; The second step involves continuously conveying the extension of the battery cell housing in one direction while clamping the extension portion of the battery cell housing supplied in the first step. as well as The third step involves continuously cutting a portion of the extension of the battery cell casing that was conveyed in the second step.

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