Battery case forming apparatus and battery case forming method using the same

Abstract

Disclosed is a battery case forming apparatus including a punch configured to form a battery case, a template unit having a forming hole configured to allow a portion of the punch to be inserted therein, and an angle adjustment unit configured to adjust an inclination angle of the template unit, and a battery case forming method using the same.

Description

Technical Field

[0001] This application claims priority to Korean Patent Application No. 10-2024-0188979, filed on December 17, 2024, and Korean Patent Application No. 10-2025-0049517, filed on April 16, 2025, the disclosures of which are incorporated herein by reference in their entirety.

[0002] This invention relates to a battery casing forming apparatus and a battery casing forming method using the forming apparatus, and more particularly to a battery casing forming apparatus and a battery casing forming method using the forming apparatus that can prevent wrinkles from forming around the cup-shaped portion during the forming of the cup-shaped portion of a pouch-shaped battery 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 vehicles and hybrid electric vehicles, which are emerging 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] The pouch-shaped secondary battery is manufactured by forming a laminate comprising an outer cover layer, a metal barrier layer and an inner adhesive layer to form a battery casing in which a housing is formed; receiving an electrode assembly and an electrolyte in the housing; and sealing the periphery of the housing.

[0006] Meanwhile, the forming process of forming the electrode assembly storage part in the pouch battery casing uses a method of placing the laminate on the mold and pressing the laminate with a punch while the laminate is fixed by a demolding device.

[0007] Figure 1 This is a conceptual diagram of conventional battery casing forming equipment, and Figure 2 This is a conceptual diagram illustrating the misaligned state of the demolding device that constitutes a conventional battery casing forming equipment.

[0008] Reference Figure 1 and Figure 2 A conventional pouch-shaped battery casing forming device includes a mold 3 configured to support the laminate S, a lower plate 4 configured to support the mold 3, a demolding device 2 located above the mold 3 to fix the laminate S, and a stamping device 1 configured to press the laminate S to form a cup-shaped portion.

[0009] After the laminate S is placed between the mold 3 and the demolding device 2, the laminate S is pressed and fixed by the mold 3 and the demolding device 2. In this state, a portion of the laminate S can be pressed by the stamping device 1 to form a cup-shaped portion in the laminate S.

[0010] At this time, if the angle of the demolding device 2 is not aligned, such as Figure 2 As shown, the mold 3 and the demolding device 2 are not parallel to each other, which results in uneven pressure on the surface of the laminate S pressed by the demolding device 2. During the molding process, the area around the cup-shaped portion of the laminate S may be pulled in, resulting in defects such as wrinkles or cracks on the outer surface of the laminate S.

[0011] (Existing technical documents)

[0012] (Patent Document 1) Korean Patent Registration Publication No. 10-2176631 Summary of the Invention

[0013] Technical issues

[0014] In view of the above problems, the present invention has been made, and the object of the present invention is to provide a battery casing forming apparatus and a battery casing forming method using the forming apparatus, the battery casing forming apparatus being configured such that when a cup-shaped portion is formed by forming a laminate, a demolding device applies uniform pressure to the pressed surface of the laminate to minimize the occurrence of wrinkles around the cup-shaped portion.

[0015] Technical solution

[0016] As a technical means to achieve the above objectives, a battery casing forming apparatus according to an embodiment of the present invention includes: a stamper 100 configured to form a battery casing; a template unit 200 having a forming hole 211 configured to allow a portion of the stamper to be inserted into the forming hole; and an angle adjusting unit 300 configured to adjust the tilt angle of the template unit 200.

[0017] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the angle adjustment unit 300 may include a plurality of cylinder units 310, and the plurality of cylinder units 310 may be driven individually.

[0018] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the cylinder unit 310 may have a spherical upper surface.

[0019] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the angle adjustment unit 300 may further include a support member 320 configured to support the plurality of cylinder units 310, and the support member 320 is provided with a plurality of receiving holes 321, the plurality of receiving holes being formed such that the plurality of cylinder units 310 protrude upward through the plurality of receiving holes.

[0020] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the template unit 200 may include: a first template 210, in which the forming hole 211 is formed; a second template 220 located below the first template 210, the second template being configured to support the first template 210; and a mold retainer 230 located below the second template 220, the mold retainer being configured to fix the first template 210 and the second template 220.

[0021] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the angle adjustment unit 300 may be located below the template unit 200, and the plurality of cylinder units 310 may contact the lower surface of the mold holder 230, and the angle of the mold holder 210 may be adjusted by individual drive.

[0022] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the stamper 100 may include: a stamping plate 110; and a stamping member 120 protruding downward from the stamping plate 110, the stamping member being configured to be inserted into the forming hole 211.

[0023] Furthermore, the battery casing forming apparatus according to an embodiment of the present invention may also include a demolding device 400, which is configured to press the outer periphery of the laminate S disposed on the template unit 200.

[0024] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the demolding device 400 may include: a first demolding device 410 configured to press the outer periphery of the laminate S, the first demolding device having a first through hole 411 configured to allow the stamping member 120 to pass through therethrough; and a second demolding device 420 located above the first demolding device 410, the second demolding device having a second through hole 421, the position and size of the second through hole corresponding to the first through hole 411.

[0025] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the forming hole 211, the first through hole 411 and the second through hole 421 may have corresponding positions and sizes.

[0026] Furthermore, the battery casing forming apparatus according to an embodiment of the present invention may also include a first drive unit 500, which is connected to the upper side of the stamper 100 to provide upward and downward driving forces to the stamper 100, or the first drive unit is connected to the upper side of the demolding device 400 to provide upward and downward driving forces to the demolding device 400.

[0027] Furthermore, the battery casing forming apparatus according to an embodiment of the present invention may also include a second drive unit 600 located below the angle adjustment unit 300, the second drive unit being configured to provide upward and downward driving forces to the template unit 200.

[0028] Furthermore, the battery casing forming apparatus according to an embodiment of the present invention may further include: a support plate 700, the support plate including a first support plate 710 configured to support the stamping press 100 and a second support plate 720 configured to support the angle adjustment unit 300; and a connecting member 800 configured to connect the first support plate 710 and the second support plate 720 to each other.

[0029] Furthermore, in the battery casing forming apparatus according to an embodiment of the present invention, the second support plate 720 may be provided with a third through hole 721, the third through hole being configured to allow the angle adjustment unit 300 to pass through the third through hole.

[0030] A battery casing forming method using a battery casing forming apparatus according to an embodiment of the present invention includes: (S1) positioning a laminate S between the stamper 100 and the template unit 200; and (S2) driving the stamper 100 or the template unit 200 to form the laminate S, wherein, prior to step (S2), the tilt angle of the template unit 200 is adjusted by the angle adjustment unit 300.

[0031] Beneficial effects

[0032] As can be seen from the above description, in the battery casing forming apparatus and the battery casing forming method using the forming apparatus according to the present invention, an angle adjustment unit configured to adjust the horizontal angle of the template can be provided below the template, and the angle adjustment unit can adjust the horizontal angle of the template when the horizontal angle of the demolding device is not aligned, so that the demolding device and the template are parallel to each other.

[0033] Furthermore, in the battery casing forming apparatus and the battery casing forming method using the forming apparatus according to the present invention, the angle adjustment unit can adjust the horizontal angle of the template to be equal to the horizontal angle of the demolding device, so that the pressure is evenly distributed on the surface of the laminate pressed by the demolding device, thereby preventing wrinkles from appearing at and near the cup-shaped portion.

[0034] Furthermore, in the battery casing forming apparatus and the battery casing forming method using the forming apparatus according to the present invention, while the demolding device is pressed after the laminate is formed, the punch can be moved upward to remove it from the cup-shaped portion, thereby minimizing the occurrence of wrinkles around the cup-shaped portion of the laminate. Attached Figure Description

[0035] Figure 1 This is a conceptual diagram of a conventional battery casing forming equipment.

[0036] Figure 2 This is a conceptual diagram illustrating the misaligned state of the demolding device that constitutes a conventional battery casing forming equipment.

[0037] Figure 3 This is a perspective view showing a battery casing forming apparatus according to the present invention.

[0038] Figure 4 This is a front view showing a battery casing forming apparatus according to the present invention.

[0039] Figure 5 This is an exploded perspective view showing the stamper, template unit, angle adjustment unit, and demolding device constituting the battery casing forming apparatus according to the present invention.

[0040] Figure 6 This is a front view showing the template unit and angle adjustment unit constituting the battery casing forming apparatus according to the present invention.

[0041] Figure 7 This is a view showing the misaligned state of the demolding device constituting the battery casing forming apparatus according to the present invention.

[0042] Figure 8 This is a view showing the tilt angle of the template adjusted by the angle adjustment unit constituting the battery casing forming apparatus according to the present invention.

[0043] Figure 9 This is a flowchart illustrating a forming method using a battery casing forming apparatus according to the present invention. Detailed Implementation

[0044] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that these preferred embodiments can be readily implemented by those skilled in the art. However, in describing the operating principles of the preferred embodiments of the present invention, detailed descriptions of known functions and configurations incorporated herein will be omitted where such detailed descriptions might obscure the subject matter of the invention.

[0045] Furthermore, the same reference numerals will be used in all the accompanying drawings to refer to parts that perform similar functions or operations. Throughout the specification, when it is said that one part is connected to another part, this means not only that one part can be directly connected to another part, but also that one part can be indirectly connected to another part via yet another part. Moreover, including a predetermined element does not mean excluding other elements, but rather that such elements may be further included unless otherwise specified.

[0046] The following describes the battery casing forming apparatus and the battery casing forming method using the forming apparatus according to the present invention.

[0047] Figure 3 This is a perspective view showing a battery casing forming apparatus according to the present invention. Figure 4 This is a front view showing a battery casing forming apparatus according to the present invention, and Figure 5 This is an exploded perspective view showing the stamper, template unit, angle adjustment unit, and demolding device constituting the battery casing forming apparatus according to the present invention.

[0048] Reference Figures 3 to 5 The battery casing forming apparatus according to the present invention is an apparatus for forming a battery casing configured to house an electrode assembly by pressing a portion of a laminate S, and includes a punch 100, a template unit 200, an angle adjustment unit 300, a demolding device 400, a first drive unit 500, a second drive unit 600, a support plate 700, and a connecting member 800.

[0049] First, typically, a laminate S may include an outer cover layer, a metal layer, and an inner cover layer.

[0050] For example, since the inner cover is positioned to be in direct contact with the electrode assembly, it must exhibit high insulation properties and high resistance to electrolytes. Furthermore, the inner cover must exhibit high sealing performance to ensure a hermetic seal between the housing and the exterior; that is, the thermally bonded seal between the inner layers must exhibit excellent thermal bonding strength.

[0051] The inner cover layer can be made of materials selected from polyolefin resins such as polypropylene, polyethylene, polyethylene acrylate, polybutene and other polyolefin resins, polyurethane resins and polyimide resins that exhibit excellent chemical resistance and high sealing performance, but the invention is not limited thereto. Polypropylene that exhibits excellent mechanical properties (such as tensile strength, rigidity, surface hardness and impact resistance) and chemical resistance is most preferably used.

[0052] The metal layer, positioned adjacent to the inner cover layer, is essentially configured as a barrier layer to prevent moisture or various gases from seeping into the battery from the outside. Lightweight and easily formed aluminum films are preferred materials for the metal layer.

[0053] An outer cover layer is disposed on the other surface of the metal layer. The outer cover layer can be made of a heat-resistant polymer exhibiting excellent tensile strength, resistance to moisture penetration, and resistance to air permeability, resulting in high heat and chemical resistance while protecting the electrode assembly. As an example, the outer cover layer can be made of nylon or polyethylene terephthalate; however, the invention is not limited thereto.

[0054] The stamping press 100 can be configured to form a battery casing by pressing a portion of the laminate S. The stamping press 100 includes a stamping plate 110 and a stamping member 120, and can be positioned above the laminate S to form the battery casing. The stamping plate 110 can support the stamping member 120 such that the stamping member 120 presses a portion of the laminate S.

[0055] A first guide member 111 may be provided on the stamping plate 110. Figure 4 (at the 12 o'clock position), the first drive unit 500 is connected to the first guide member 111. The first guide member 111 is disposed on the upper surface of the stamping plate 110, and a first guide recess 111a can be formed in the upper surface of the first guide member 111 to be pressed downward.

[0056] In this configuration, one or more first drive units 500 are connected to the first guide recess 111a, thereby allowing the stamper 100 to be stably connected to and supported by the first drive unit 500.

[0057] The stamping member 120 is formed to protrude downward from the stamping plate 110 and can be formed to be inserted into the forming hole 211 formed in the template unit 200.

[0058] For example, the stamping member 120 can be configured such that when the laminate S is inserted into the forming hole 211 while it is placed on the template unit 200, a cup-shaped portion corresponding to the forming hole 211 is formed in the laminate S.

[0059] The corners where the lower surface and side surface of the stamping member 120 meet each other may each have a predetermined radius of curvature in order to prevent damage to the laminate S when pressing the laminate S.

[0060] Figure 6 This is a front view showing the template unit and angle adjustment unit constituting the battery casing forming apparatus according to the present invention.

[0061] Reference Figures 3 to 6 The template unit 200 can be disposed below the stamper 100, so that the laminate S is placed on the template unit 200. The template unit 200 may include a first template 210, a second template 220 and a mold retainer 230.

[0062] The first template 210 can be positioned below the stamper 100, such that the laminate S is placed on the first template 210. In this case, the first template 210 can be provided with a forming hole 211, which is configured to allow a portion of the stamper 100 to be inserted. A portion of the stamping member 120 is inserted into the forming hole 211, and the stamping member 120 can press the laminate S placed on the first template 210 to form a cup-shaped portion in the laminate S.

[0063] The size of the forming hole 211 formed in the first template 210 can be larger than the size of the stamping member 120, so that the stamping member 120 can be inserted into the forming hole. The forming hole 211 can be formed with a size corresponding to each of the first through hole 411 and the second through hole 421 formed in the demolding device 400, which will be described below.

[0064] Furthermore, the second template 220 may be disposed below the first template 210 to support the first template 210. The second template 220 may support the first template 210 without forming a recess or hole therein; however, the invention is not limited thereto. For example, the second template 220 may be provided with a forming recess (not shown) or a forming hole (not shown) formed at a position corresponding to the forming hole 211, such that a portion of the stamping member 120 is inserted into the forming recess or forming hole.

[0065] The mold retainer 230 is located below the second template 220 and can fix and support the first template 210 and the second template 220.

[0066] An angle adjustment unit 300, configured to adjust the tilt angle of the template unit 200, can be located below the mold holder 230.

[0067] Figure 7 This is a view showing the misaligned state of the demolding device constituting the battery casing forming apparatus according to the present invention, and Figure 8 This is a view showing the tilt angle of the template adjusted by the angle adjustment unit constituting the battery casing forming apparatus according to the present invention.

[0068] Reference Figures 3 to 8 The angle adjustment unit 300 includes multiple individually driven cylinder units 310, and the tilt angle of the template unit 200 can be adjusted by adjusting the height of each of the multiple cylinder units 310. In this case, the angle adjustment unit 300 can adjust the template unit 200 relative to the horizontal plane. Figure 3 The tilt angle of the xz plane in the equation.

[0069] In other words, multiple cylinder units 310 contact the lower surface of the mold holder 230 and are individually driven to adjust the angle of the mold holder 230, thereby adjusting the angle of each of the first template 210 and the second template 220 that are fixed to and supported by the mold holder 230.

[0070] In this case, the upper surface of each of the plurality of cylinder units 310 in contact with the mold holder 230 ( Figure 4 The 12 o'clock position in the mold can be configured as a sphere. Therefore, the spherical upper surface of each of the multiple cylinder units 310 makes point contact with the mold holder 230, making it easier to adjust the tilt angle of the mold unit 200.

[0071] Multiple cylinder units 310 can be controlled by a controller (not shown), and the controller (not shown) can control the driving of multiple cylinder units 310, the first drive unit 500 and the second drive unit 600.

[0072] Furthermore, the angle adjustment unit 300 includes a support member 320 configured to support a plurality of cylinder units 310. The support member 320 may be provided with a plurality of receiving holes 321, which are configured to allow portions of the plurality of cylinder units 310 to protrude upwards through the receiving holes 321. For example, each receiving hole 321 may be configured to allow the insertion of a rod (not shown) that protrudes from the body portion (not shown) of a corresponding cylinder unit 310 and is driven to move forward and backward. In this case, the body portion (not shown) of the cylinder unit 310 can be housed in the support member 320, and the rod (not shown) can protrude upwards from the support member 320 through the receiving hole 321.

[0073] Additionally, the angle adjustment unit 300 may further include a sensor unit (not shown) configured to measure the tilt angle of the demolding unit 400, and the sensor unit (not shown) may measure the x-axis angle and z-axis angle of the demolding unit 400. The sensor unit (not shown) may transmit the measured angle of the demolding unit 400 to a controller (not shown), and the controller (not shown) may individually control the drive of multiple cylinder units 310 to adjust the tilt angle of the template unit 200, such that the template unit 200 is parallel to the demolding unit 400.

[0074] The demolding device 400 includes a first demolding device 410 and a second demolding device 420, and can be configured to be fixedly disposed on the outer periphery of the laminate S on the template unit 200. The demolding device 400 can be arranged to surround the outer periphery of the stamping member 120.

[0075] The first demolding device 410 can be located above the template unit 200 and can be configured to press and fix the outer periphery of the laminate S placed on the template unit 200.

[0076] A first through hole 411 is formed in the first demolding device 410, and the first through hole 411 may be formed with a size larger than that of the stamping member 120, so that the stamping member 120 can pass through the first through hole. In this case, the first through hole 411 may have a size corresponding to the forming hole 211 formed in the first template 210.

[0077] Furthermore, a second through hole 421, corresponding in position and size to the first through hole 411, can be formed in a second demolding device 420 located above the first demolding device 410. The second through hole 421 can be formed with a size larger than that of the stamping member 120, allowing the stamping member 120 to pass through, corresponding to the first through hole 411, and can have a size corresponding to the forming hole 211 formed in the first template 210.

[0078] That is, each of the first through hole 411 and the second through hole 421 can be formed with a size corresponding to the forming hole 211, and the first through hole 411, the second through hole 421 and the forming hole 211 can be formed in the corresponding plates to have corresponding positions and sizes.

[0079] Furthermore, the second demolding device 420 can be connected to the upper surface of the first demolding device 410 to support the first demolding device 410. In this case, the second demolding device 420 can be a demolding device back plate configured to support the first demolding device 410. The first demolding device 410 and the second demolding device 420 can be connected and secured to each other via known fastening devices such as bolts.

[0080] Alternatively, for example, the second demolding device 420 may be connected to a guide extension member 440 extending downward from the second guide member 430 disposed above the stamping plate 110. The second demolding device 420 may be disposed separately because if the demolding devices are disposed integrally, it would be impossible to connect the first demolding device 410 and the guide extension member 440 to each other.

[0081] The second guide member 430 extends from the upper surface of the stamping plate 110 in the front-back direction (Z-axis direction), and the second guide member 430 may have a second guide recess 431 recessed downward from the upper surface in the longitudinal direction on its upper surface.

[0082] In this configuration, the first drive unit 500 can be connected to the second guide recess 431 in the Z-axis direction, thereby allowing the second guide member 430 and the first drive unit 500 to connect to each other. The guide extension member 440 can extend downward from the second guide member 430 and can be connected to the second demolding device 420 via the stamping plate 110. Therefore, the second demolding device 420 can be connected to the first drive unit 500 via the second guide member 430 and the guide extension member 440, and the second demolding device 420 can be stably connected to the first drive unit 500 and can be driven in the upward and downward directions.

[0083] The first drive unit 500 can be connected to the upper side of the press 100. Figure 4 (at the 12 o'clock position) to provide upward and downward driving force to the stamper 100, or it can be connected to the upper side of the demolding device 400 to provide upward and downward driving force to the demolding device 400.

[0084] The first drive unit 500 may include a 1a drive unit 510 connected to the first guide member 111 to provide upward and downward driving forces to the stamper 100 and a 1b drive unit 520 connected to the second guide member 430 to provide upward and downward driving forces to the demolding device 400.

[0085] The drive unit 510 is inserted into and connected to the first guide recess 111a of the first guide member 111 to support the stamper 100, and can be configured as an electric cylinder to provide upward and downward driving force to the stamper 100.

[0086] The 1a drive unit 510 can provide a downward driving force to the press 100 so that the press 100 presses the laminate S, and can also provide an upward driving force to the press 100 so that the press 100 moves away from the laminate S after pressing the laminate S.

[0087] Furthermore, the 1b drive unit 520 is inserted into and connected to the second guide recess 431 of the second guide member 430 to support the demolding device 400, and can provide upward and downward driving forces to the demolding device 400. In this case, multiple 1b drive units 520 can be connected to one second guide member 430.

[0088] The 1b drive unit 520 can provide a downward driving force to the demolding device 400, causing the demolding device 400 to press and fix the outer periphery of the laminate S. The 1b drive unit 520 can continuously provide a downward driving force to the demolding device 400 to maintain the pressing force applied by the demolding device 400 to press the outer periphery of the laminate S as the stamping device 100 moves away from the laminate S after pressing it. Additionally, the 1b drive unit 520 can provide an upward driving force to the demolding device 400, causing the demolding device 400 to move away from the laminate S as the stamping device 100 moves away from the laminate S after pressing it.

[0089] Meanwhile, the second drive unit 600 is located below the angle adjustment unit 300 and can provide upward and downward driving forces to the template unit 200. The second drive unit 600 can be connected to the lower side of the support member 320 of the angle adjustment unit 300 to provide upward and downward driving forces to the support member 320. Therefore, upward and downward driving forces can also be applied to the template unit 200 that is mounted on or connected to the angle adjustment unit 300.

[0090] The second driving unit 600 can provide an upward driving force to the template unit 200, causing the laminate S placed on the template unit 200 to be pressed by the template unit 200 and the demolding device 400, and a portion of the laminate S is formed by the stamping device 100. Additionally, the second driving unit 600 can provide a downward driving force to the template unit 200, causing the formed laminate S to be discharged between the template unit 200 and the demolding device 400.

[0091] The second drive unit 600 can be located below the angle adjustment unit 300 to move the template unit 200 upward toward the demolding device 400 at an angle (horizontal angle) adjusted by the angle adjustment unit 300.

[0092] In other words, even when the demolding unit 400 has a predetermined tilt angle, the second drive unit 600 can drive both the angle adjustment unit 300 and the template unit 200 upwards in a state where the tilt angle of the template unit 200 is adjusted by the angle adjustment unit 300 to correspond to the tilt angle of the demolding unit 400, so that the template unit 200 with the adjusted tilt angle contacts the demolding unit 400 and provides uniform pressure to the laminate S.

[0093] Meanwhile, the support plate 700 may include a first support plate 710 configured to support the stamper 100 and the demolding device 400, and a second support plate 720 configured to support the template unit 200 and the angle adjustment unit 300.

[0094] The first drive unit 500 is mounted on the first support plate 710 and can form multiple holes (not shown) such that the shaft member (not shown) of the first drive unit 500 protrudes through the holes and extends downward.

[0095] Multiple holes (not shown) may be formed such that the main body portion (not shown) of the first drive unit 500 is mounted on the upper surface of the first support plate 710, and the shaft member (not shown) of the first drive unit 500 protrudes downward through the holes. In this case, at least some of the multiple holes may be formed as slits extending in the longitudinal direction, such that multiple 1b drive units 520 are connected to the second guide member 430.

[0096] Furthermore, the second support plate 720 may be provided with a third through hole 721 through which the angle adjustment unit 300 passes. In this case, the third through hole 721 may be formed such that the support member 320 of the angle adjustment unit 300 is inserted therein. The angle adjustment unit 300 passing through the third through hole 721 may be connected to the second support plate 720.

[0097] The connecting member 800 can be configured to connect the first support plate 710 and the second support plate 720 to each other. The connecting member 800 can connect the first support plate 710 and the second support plate 720 to each other while spacing their edges apart in the vertical direction.

[0098] The first support plate 710, the second support plate 720, and the connecting member 800 can fix and support the stamper 100, the template unit 200, the angle adjustment unit 300, and the demolding device 400 so that they can be driven more stably by the first drive unit 500 and the second drive unit 600.

[0099] Next, a battery casing forming method using a battery casing forming apparatus with the above configuration will be described.

[0100] Figure 9 This is a flowchart illustrating a forming method using a battery casing forming apparatus according to the present invention. (Refer to...) Figures 3 to 9 The battery casing forming method according to the present invention may include: step S1: positioning the laminate S between the stamper 100 and the template unit 200; and step S2: driving the stamper 100 or the template unit 200 to form the laminate S.

[0101] In step S1, the laminate S can be placed on the first template 210 and positioned between the first template 210 and the first demolding device 410. Additionally, prior to step S2, the horizontal angle of the template unit 200 can be adjusted by the angle adjustment unit 300 to correspond to the tilt angle of the demolding device 400.

[0102] Step S2 will be described in more detail. The template unit 200 can be driven upward by the second drive unit 600, thereby pressing the laminate S by the template unit 200 and the demolding device 400. Since the second drive unit 600 provides additional upward driving force and the 1b drive unit 520 simultaneously provides upward driving force to the demolding device 400, the laminate S can move upward while being pressed by the template unit 200 and the demolding device 400. Therefore, the stamping member 120 can be inserted into the forming hole 211 formed in the template unit 200, thereby forming a cup-shaped portion in the upwardly moving laminate S.

[0103] Subsequently, drive unit 510 1a can provide an upward driving force to the stamper 100, causing the stamper 100 to separate from the laminate S in which the cup-shaped portion is formed. Drive unit 600 1b can provide a downward driving force to the template unit 200, causing the laminate S to move downwards. Drive unit 520 1b can provide a downward driving force to the demolding device 400, causing the laminate S to move downwards while being pressed by the template unit 200 and the demolding device 400. Furthermore, drive unit 600 can also provide a downward driving force to the template unit 200 to release the pressing force applied to the laminate S by the demolding device 400 and discharge the laminate S.

[0104] According to the above forming method, during the process of separating the stamping press 100 after the laminate S is formed and during the process of discharging the laminate S, the pressing force of the demolding device 400 can be kept uniform, thereby minimizing the occurrence of wrinkles around the cup-shaped part of the laminate S.

[0105] While the specific details of the invention have been described in detail, those skilled in the art will understand that this 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 can be made without departing from the category and technical concept of the invention, and it will be apparent that such changes and modifications fall within the scope of the appended claims.

[0106] (Explanation of reference numerals in the attached image)

[0107] 100: Stamping machine

[0108] 110: Stamping plate

[0109] 111: First guide member; 111a: First guide recess

[0110] 120: Stamped component

[0111] 200: Template Unit

[0112] 210: First template; 211: Forming hole

[0113] 220: Second Template

[0114] 230: Mold Holder

[0115] 300: Angle Adjustment Unit

[0116] 310: Cylinder Unit

[0117] 320: Supporting component; 321: Storage hole

[0118] 400: Demolding device

[0119] 410: First demolding device; 411: First through hole

[0120] 420: Second demolding device; 421: Second through hole

[0121] 430: Second guide member; 431: Second guide recess

[0122] 440: Guide extension component

[0123] 500: First drive unit

[0124] 510: 1a drive unit; 520: 1b drive unit

[0125] 600: Second drive unit

[0126] 700: Support plate

[0127] 710: First Support Plate

[0128] 720: Second support plate; 721: Third through hole

[0129] 800: Connecting component

Claims

1. A battery casing forming apparatus, the battery casing forming apparatus comprising: A stamping press configured to form a battery casing; A template unit having a forming hole configured to allow a portion of the stamper to be inserted into the forming hole; as well as An angle adjustment unit is configured to adjust the tilt angle of the template unit.

2. The battery casing forming equipment according to claim 1, wherein, The angle adjustment unit includes multiple cylinder units, and The multiple cylinder units are driven individually.

3. The battery casing forming equipment according to claim 2, wherein, The cylinder unit has a spherical upper surface.

4. The battery casing forming equipment according to claim 2, wherein, The angle adjustment unit also includes a support member configured to support the plurality of cylinder units, and The support member is provided with multiple storage holes, which are formed such that the multiple cylinder units protrude upward through the multiple storage holes.

5. The battery casing forming equipment according to claim 2, wherein, The template unit includes: A first template, wherein the forming hole is formed in the first template; A second template located below the first template, the second template being configured to support the first template; and A mold retainer located below the second template, the mold retainer being configured to secure the first template and the second template.

6. The battery casing forming equipment according to claim 5, wherein, The angle adjustment unit is located below the template unit, and The plurality of cylinder units contact the lower surface of the mold holder and adjust the angle of the mold holder by individual drive.

7. The battery casing forming equipment according to claim 2, wherein, The stamping device includes: Stamped plates; and A stamping member protruding downward from the stamping plate, the stamping member being configured to be inserted into the forming hole.

8. The battery casing forming apparatus according to claim 7, the battery casing forming apparatus further comprising a demolding device configured to press the outer periphery of the laminate disposed on the template unit.

9. The battery casing forming equipment according to claim 8, wherein, The demolding device includes: A first release device, configured to press against the outer periphery of the laminate, the first release device having a first through-hole configured to allow the stamping member to pass through therethrough; and A second demolding device is located above the first demolding device, and the second demolding device is provided with a second through hole, the position and size of which correspond to the first through hole.

10. The battery casing forming equipment according to claim 9, wherein, The forming hole, the first through hole, and the second through hole have corresponding positions and dimensions.

11. The battery casing forming apparatus according to claim 9, wherein the battery casing forming apparatus further comprises a first driving unit connected to the upper side of the stamping press to provide upward and downward driving forces to the stamping press, or the first driving unit connected to the upper side of the demolding device to provide upward and downward driving forces to the demolding device.

12. The battery casing forming apparatus according to claim 2, further comprising a second driving unit located below the angle adjustment unit, the second driving unit being configured to provide upward and downward driving forces to the template unit.

13. The battery casing forming apparatus according to claim 2, wherein the battery casing forming apparatus further comprises: A support plate, the support plate including a first support plate configured to support the stamping press and a second support plate configured to support the angle adjustment unit; as well as A connecting member configured to connect the first support plate and the second support plate to each other.

14. The battery casing forming equipment according to claim 13, wherein, The second support plate is provided with a third through hole, which is configured to allow the angle adjustment unit to pass through the third through hole.

15. A battery casing forming method using the battery casing forming apparatus according to any one of claims 1 to 14, the battery casing forming method comprising the following steps: (S1) Position the laminate between the punch and the template unit; as well as (S2) Drive the stamping press or the template unit to form the laminate, wherein, Before step (S2), the tilt angle of the template unit is adjusted by the angle adjustment unit.

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