Die for punching holes in aluminum-plastic film for pouch batteries

Abstract

This utility model belongs to the field of battery manufacturing technology and discloses a punching mold for aluminum-plastic film of soft-pack batteries. The punching mold for aluminum-plastic film of soft-pack batteries includes a concave mold, a guide mold, at least one first punch, and at least one second punch. The concave mold has at least one first groove and at least one second groove, with the second groove located on either side of the first groove. The guide mold is disposed on the concave mold, and the aluminum-plastic film to be formed is sandwiched between the guide mold and the concave mold. The first punch includes at least one first protrusion, which can pass through the guide mold and move towards the first groove to punch and form the receiving cavity. The second punch includes at least one second protrusion, which is located on either side of the first punch. The second protrusion passes through the guide mold and moves towards the second groove to punch and form the receiving space, thereby enabling the manufacture of aluminum-plastic film that improves the support strength, liquid retention, and / or safety of soft-pack batteries.

Description

Technical Field

[0001] This utility model relates to the field of battery production technology, and in particular to a punching mold for aluminum-plastic film of soft-pack batteries. Background Technology

[0002] In the battery industry, batteries are generally classified into prismatic batteries, cylindrical batteries, and pouch batteries based on their shape. Among them, pouch batteries typically use a lighter aluminum-plastic film as their casing. Under the same conditions, pouch batteries have the advantages of being lighter and having higher energy density than prismatic or cylindrical batteries, and therefore have been widely used.

[0003] However, unlike the strong supporting capacity of prismatic or cylindrical battery casings, aluminum-plastic film has relatively poor mechanical properties. Furthermore, during the vacuuming process of pouch batteries, the space inside the aluminum-plastic film is compressed, causing most of the free electrolyte to be drawn out of the battery. This results in a lower electrolyte retention capacity, which negatively impacts battery performance and is detrimental to its long-term performance.

[0004] Therefore, there is an urgent need for a punching mold for aluminum-plastic film in soft-pack batteries to solve the above-mentioned technical problems. Utility Model Content

[0005] One objective of this invention is to provide a punching mold for aluminum-plastic film of pouch batteries, which can manufacture aluminum-plastic film at low cost that can improve the support, liquid retention and / or safety of pouch batteries.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A punching mold for a pouch battery aluminum-plastic film, wherein the aluminum-plastic film includes at least one receiving cavity and at least one receiving space, the receiving cavity being used to load the battery cell and electrolyte, the receiving space being disposed on either side of the receiving cavity, and the receiving space being used to load a support member, electrolyte, and / or flame-retardant medium; the punching mold for a pouch battery aluminum-plastic film includes:

[0008] The die cavity is provided with at least one first groove and at least one second groove, wherein the second groove is disposed on either side of the first groove;

[0009] A guide template is provided on the cavity mold, and the aluminum-plastic film to be formed is sandwiched between the guide template and the cavity mold.

[0010] At least one first punch, the first punch including at least one first protrusion, the first protrusion and the first groove are respectively provided in a one-to-one correspondence, the first protrusion can pass through the guide plate and move toward the first groove to stamp the accommodating cavity.

[0011] At least one second punch, the second punch including at least one second protrusion, the second protrusion and the second groove being respectively provided in a one-to-one correspondence, the second punch being disposed on either side of the first punch, the second protrusion passing through the guide plate and moving toward the second groove to stamp the receiving space.

[0012] Optionally, the guide template has at least one first guide hole and at least one second guide hole, the second guide hole being disposed on either side of the first guide hole, the first guide hole, the first groove and the first protrusion being disposed in a one-to-one correspondence, and the second guide hole, the second groove and the second protrusion being disposed in a one-to-one correspondence.

[0013] Optionally, the first groove, the first protrusion, and the first guide hole have the same cross-sectional shape; the second groove, the second protrusion, and the second guide hole have the same cross-sectional shape.

[0014] Optionally, the cross-sectional shape of the first groove, the cross-sectional shape of the first protrusion, the cross-sectional shape of the first guide hole, the cross-sectional shape of the second groove, the cross-sectional shape of the second protrusion, and the cross-sectional shape of the second guide hole are all square, rectangular, cylindrical, and triangular.

[0015] Optionally, multiple second grooves, second protrusions, and second guide holes are provided in a one-to-one correspondence. The multiple second grooves are all located on the same side of the first groove, or the multiple second grooves are respectively located on opposite sides of the first groove; the multiple second protrusions are all located on the same side of the first protrusion, or the multiple second protrusions are respectively located on opposite sides of the first protrusion; the multiple second guide holes are all located on the same side of the first guide hole, or the multiple second guide holes are respectively located on opposite sides of the first guide hole.

[0016] Optionally, the distance between the plurality of second grooves is adjustable, the distance between the plurality of second protrusions is adjustable, and the distance between the plurality of second guide holes is adjustable.

[0017] Optionally, the downward stroke of the first punch is adjustable; and / or,

[0018] The downward stroke of the second punch is adjustable.

[0019] Optionally, the depth of the second groove is not greater than the depth of the first groove.

[0020] Optionally, a linkage mechanism is connected between the first punch and the second punch, and the linkage mechanism is used to make the first punch and the second punch move synchronously.

[0021] Optionally, the first punch is connected to a first transmission mechanism to drive the first punch to move; the second punch is connected to a second transmission mechanism to drive the second punch to move; so that the first punch and the second punch move asynchronously.

[0022] The beneficial effects of this utility model are:

[0023] This invention provides a punching mold for aluminum-plastic film used in soft-pack batteries. By creating a second groove in the concave mold and correspondingly providing a second convex mold with a second protrusion, the manufactured aluminum-plastic film, in addition to the cavity for holding the battery cells and electrolyte, also includes a receiving space located on at least one side of the cavity. This increases the receiving space of the formed aluminum-plastic film, allowing for the filling of support components, electrolyte, and / or flame-retardant media, thereby improving the structural strength, electrolyte retention, and / or safety performance of batteries using this aluminum-plastic film, and thus contributing to extending the service life of batteries using this aluminum-plastic film. Furthermore, the aluminum-plastic film formed by this punching mold does not affect the existing structure and dimensions of aluminum-plastic film, ensuring production efficiency and low cost. Attached Figure Description

[0024] Figure 1 The isometric view of the aluminum-plastic film provided in the specific embodiment of this utility model Figure 1 ;

[0025] Figure 2 The isometric view of the aluminum-plastic film provided in the specific embodiment of this utility model Figure 2 ;

[0026] Figure 3 This is a cross-sectional view of the aluminum-plastic film provided in a specific embodiment of this utility model;

[0027] Figure 4 This is an exploded view of the punching mold for aluminum-plastic film of soft-pack batteries provided in a specific embodiment of this utility model;

[0028] Figure 5 This is a cross-sectional view of the concave mold provided in a specific embodiment of this utility model;

[0029] Figure 6 This is an isometric view of the aluminum-plastic film placed in the punching mold according to a specific embodiment of this utility model;

[0030] Figure 7 This is an isometric view of the aluminum-plastic film being positioned by the guide template and the concave mold according to a specific embodiment of this utility model;

[0031] Figure 8 This is an isometric view of the first and second punches when they move to the first preset position according to a specific embodiment of the present invention;

[0032] Figure 9 This is an isometric view of the aluminum-plastic film after molding, provided in a specific embodiment of this utility model.

[0033] In the picture:

[0034] 1. Aluminum-plastic film; 101. Receiving cavity; 102. Receiving space;

[0035] 10. Die cavity; 11. First groove; 12. Second groove;

[0036] 20. Guide template; 21. First guide hole; 22. Second guide hole;

[0037] 30. The first punch; 31. The first convex part;

[0038] 40. Second punch; 41. Second protrusion. Detailed Implementation

[0039] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] The following reference Figures 1 to 9 This invention introduces a punching mold for aluminum-plastic film used in soft-pack batteries.

[0044] This embodiment provides a punching mold for aluminum-plastic film of soft-pack batteries, which is used to manufacture aluminum-plastic film 1 at low cost, which can improve the support, liquid retention and / or safety of soft-pack batteries.

[0045] Please refer to Figures 1 to 3 The aluminum-plastic film 1 includes at least one accommodating cavity 101 and at least one receiving space 102. The accommodating cavity 101 is used to load the battery cell and electrolyte, and the receiving space 102 is disposed on either side of the accommodating cavity 101. The receiving space 102 is used to load the support, electrolyte and / or flame retardant medium. This can improve the structural strength, electrolyte retention and / or safety performance of the battery loaded with the aluminum-plastic film 1.

[0046] Please refer to Figure 4 and Figure 5 Specifically, the punching die for the aluminum-plastic film of soft-pack batteries includes a concave die 10, a guide template 20, at least one first punch 30, and at least one second punch 40. The concave die 10 has at least one first groove 11 and at least one second groove 12, with the second groove 12 located on either side of the first groove 11. The guide template 20 is disposed on the concave die 10, and the aluminum-plastic film 1 to be formed is sandwiched between the guide template 20 and the concave die 10. The first punch 30 includes at least one first protrusion 31, which corresponds one-to-one with the first groove 11. The first punch 30 can pass through the guide template 20 and move toward the first groove 11 to punch the receiving cavity 101. The second punch 40 includes at least one second protrusion 41, which corresponds one-to-one with the second groove 12. The second punch 40 is located on either side of the first punch 30. The second punch 40 can pass through the guide template 20 and move toward the second groove 12 to punch the receiving space 102.

[0047] The punching mold for the aluminum-plastic film of the soft-pack battery in this embodiment, by opening a second groove 12 on the concave mold 10 and correspondingly providing a second punch 40 with a second protrusion 41 on the second punch 40, allows the manufactured aluminum-plastic film 1 to include, in addition to the accommodating cavity 101 for loading the battery cell and electrolyte, a receiving space 102 provided on at least one side of the accommodating cavity 101. This increases the receiving space 102 of the molded aluminum-plastic film 1, which can be filled with support members, electrolyte and / or flame-retardant medium, thereby improving the structural strength, electrolyte retention and / or safety performance of the battery using the aluminum-plastic film 1, thus helping to improve the service life of the battery using the aluminum-plastic film 1. Furthermore, the aluminum-plastic film 1 formed by this punching mold does not affect the existing structure and size of the aluminum-plastic film 1, ensuring production efficiency and low cost.

[0048] Optionally, the depth of the second groove 12 is not greater than the depth of the first groove 11. This setting ensures that the depth of the accommodating space 102 after molding is not greater than the depth of the accommodating cavity 101, so that the setting of the accommodating space 102 does not affect the original size of the aluminum-plastic film 1, avoiding excessive modifications that would increase costs.

[0049] Please refer to Figure 3 and Figure 5 Specifically, the height of the accommodating space 102 is H1, and the height of the accommodating cavity 101 is H2, where H1 ≤ H2. Similarly, the depth of the second groove 12 is D1, and the depth of the first groove 11 is D2, where D1 ≤ D2.

[0050] Please continue to refer to Figure 4 Furthermore, the guide template 20 has at least one first guide hole 21 and at least one second guide hole 22. The second guide hole 22 is disposed on either side of the first guide hole 21. The first guide hole 21, the first groove 11 and the first protrusion 31 are disposed in a one-to-one correspondence. The second guide hole 22, the second groove 12 and the second protrusion 41 are disposed in a one-to-one correspondence. This allows the first protrusion 31 and the second protrusion 41 to pass through, thereby guiding the movement of the first punch 30 and the second punch 40.

[0051] For example, in this embodiment, the aluminum-plastic film 1 has two accommodating cavities 101 and 16 accommodating spaces 102. The 16 accommodating spaces 102 are divided into two groups and respectively arranged on opposite sides of the accommodating cavity 101, with 8 spaces in each group. In each group, four spaces form a small group, and the two small groups are arranged at intervals to leave space for the tabs to extend. That is, the accommodating space 102 uses the unused space of the aluminum-plastic film 1 on the tab extension side, without the need to add other dimensions, thus reducing costs.

[0052] Furthermore, each of the first guide mold holes 21, the first groove 11, and the first protrusion 31 is provided in pairs. Each of the second guide mold holes 22, the second groove 12, and the second protrusion 41 is provided in 16 pairs, divided into four groups of four. These four groups are arranged in pairs on opposite sides, with gaps between groups on the same side to allow for the extension space of the electrode tabs. The distance between adjacent pairs in each group is 8mm, and the distance between groups on the same side is 16mm. The distances between the second guide mold hole 22 and the first guide mold hole 21, the second groove 12 and the first groove 11, and the second protrusion 41 and the first protrusion 31 are all 6mm. Simultaneously, D1 = 2mm and D2 = 4mm on one side, and D1 = 2.1mm and D2 = 4.2mm on the other side. There are two first punches 30, each containing one first protrusion 31. There are two second punches 40, each containing eight second protrusions 41.

[0053] This design not only improves the support, liquid retention, and safety of batteries using aluminum-plastic film 1, but also does not affect the existing structure and size of aluminum-plastic film 1, ensuring production efficiency and cost.

[0054] Optionally, the first groove 11, the first protrusion 31, and the first guide hole 21 have the same cross-sectional shape and the same cross-sectional shape as the receiving cavity 101; the second groove 12, the second protrusion 41, and the second guide hole 22 have the same cross-sectional shape and the same cross-sectional shape as the receiving space 102. That is, the cross-sectional shapes of each structure of the forming receiving cavity 101 are the same, and the cross-sectional shapes of each structure of the forming receiving space 102 are the same, so as to realize the respective forming of the receiving cavity 101 and the receiving space 102.

[0055] Further optionally, the cross-sectional shape of the first groove 11, the cross-sectional shape of the first protrusion 31, the cross-sectional shape of the first guide hole 21, the cross-sectional shape of the second groove 12, the cross-sectional shape of the second protrusion 41, and the cross-sectional shape of the second guide hole 22 are all square, rectangular, cylindrical, and triangular, adopting regular shapes to facilitate the placement of the support, electrolyte, and / or flame-retardant medium.

[0056] For example, the cross-sectional shape of the second groove 12, the cross-sectional shape of the second protrusion 41, the cross-sectional shape of the second guide hole 22, and the cross-sectional shape of the accommodating space 102 can all be circular or square; if it is square, the corresponding second protrusion 41 should have a chamfer or a smooth part so that the accommodating space 102 after molding is more rounded and less prone to damage.

[0057] Specifically, the number of the first groove 11, the first protrusion 31, the first guide hole 21, the second groove 12, the second protrusion 41, and the second guide hole 22 can be set according to actual needs, and no specific limitation is made here.

[0058] More specifically, one or two of the first groove 11, the first protrusion 31 and the first guide hole 21 are provided in a one-to-one correspondence, so that one or two accommodating cavities 101 can be formed. After the battery cell and electrolyte are loaded in the accommodating cavity 101, the aluminum-plastic film 1 is folded to combine the two accommodating cavities 101 into a sealed chamber, or to seal one accommodating cavity 101, so as to realize the forming of the soft pack battery.

[0059] More specifically, multiple second grooves 12, second protrusions 41, and second guide holes 22 are provided in a one-to-one correspondence. Multiple second grooves 12 are all located on the same side of the first groove 11, or multiple second grooves 12 are respectively located on opposite sides of the first groove 11; multiple second protrusions 41 are all located on the same side of the first protrusion 31, or multiple second protrusions 41 are respectively located on opposite sides of the first protrusion 31; multiple second guide holes 22 are all located on the same side of the first guide hole 21, or multiple second guide holes 22 are respectively located on opposite sides of the first guide hole 21. This forms multiple receiving spaces 102. This arrangement allows for the loading of at least one support member, at least one electrolyte, and at least one flame-retardant medium within the multiple receiving spaces 102, thus enabling the battery using the aluminum-plastic film 1 to have certain support strength, electrolyte retention capacity, and safety performance.

[0060] Furthermore, the distance between the multiple second grooves 12 is adjustable, the distance between the multiple second protrusions 41 is adjustable, and the distance between the multiple second guide holes 22 is adjustable. That is, the punching mold can be adapted to the molding of aluminum-plastic film 1 with different distances and quantities between the accommodating spaces 102. Only the distance between the multiple second grooves 12, the distance between the multiple second protrusions 41, and the distance between the multiple second guide holes 22 need to be changed.

[0061] Furthermore, the downward stroke of the first punch 30 is adjustable; and / or the downward stroke of the second punch 40 is adjustable. This allows the molding of accommodating cavities 101 and / or receiving spaces 102 with different depth requirements to be adapted by adjusting the downward stroke.

[0062] Specifically, the downward stroke of the first punch 30 and / or the downward stroke of the second punch 40 can be adjusted by the corresponding adjustment mechanism on the punch press. For example, in a mechanical punch press, adjustment can be made via a crankshaft connecting rod mechanism and a stroke limit screw. In a hydraulic punch press, adjustment can be made via hydraulic system parameters and displacement sensor feedback. In a CNC punch press, adjustment can be made by inputting the corresponding value on the touchscreen through the appropriate program. The specific stroke adjustment can be set according to the actual structure and is not specifically limited here.

[0063] Furthermore, the first punch 30 and the second punch 40 can move synchronously or asynchronously, both of which can achieve the forming of the accommodating cavity 101 and the receiving space 102. These can be adapted to actual needs and equipment types, and are not specifically limited here.

[0064] Specifically, a linkage mechanism connects the first punch 30 and the second punch 40. This linkage mechanism enables the first punch 30 and the second punch 40 to move synchronously, thus achieving synchronous movement between them. It is understood that the first punch 30 and the second punch 40 can be driven by the same drive mechanism; that is, both are connected to the same drive mechanism via a linkage plate or other structure, thereby achieving synchronous driving. Of course, the linkage mechanism can also be implemented using two synchronously moving motors or other structures, as long as the linkage between the two is achieved; no specific limitation is made here.

[0065] Specifically, the first punch 30 is connected to a first transmission mechanism to drive the first punch 30 to move; the second punch 40 is connected to a second transmission mechanism to drive the second punch 40 to move, so that the first punch 30 and the second punch 40 move asynchronously. That is, the first punch 30 is driven by the first transmission mechanism and the second punch 40 is driven by the second transmission mechanism. The two transmission mechanisms do not need to be linked or synchronized, so the first punch 30 and the second punch 40 can operate independently, thereby realizing the asynchronous movement of the first punch 30 and the second punch 40.

[0066] It is understandable that both the first and second transmission mechanisms can be driven by motors, cylinders, or other similar structures, and no specific limitations are made here.

[0067] The following reference Figures 6 to 9 This paper describes the stamping process of the aluminum-plastic film 1 of the soft-pack battery using the punching die.

[0068] First, the aluminum-plastic film 1 to be formed is placed between the guide template 20 and the groove. Then, the first punch 30 is driven to move toward the die 10, so that the first protrusion 31 passes through the first guide hole 21 and squeezes the aluminum-plastic film 1 until it mates with the first groove 11, at which point the receiving cavity 101 is formed. Next, the second punch 40 is driven to move toward the die 10, so that the second protrusion 41 passes through the second guide hole 22 and squeezes the aluminum-plastic film 1 until it mates with the second groove 12, at which point the receiving space 102 is formed.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A punching die for aluminum-plastic film in soft-pack batteries, characterized in that, The aluminum-plastic film (1) includes at least one receiving cavity (101) and at least one receiving space (102), the receiving cavity (101) being used to load the battery cell and electrolyte, the receiving space (102) being disposed on either side of the receiving cavity (101), and the receiving space (102) being used to load the support, electrolyte, and / or flame-retardant medium; the punching mold for the aluminum-plastic film of the soft-pack battery includes: A die (10) is provided with at least one first groove (11) and at least one second groove (12), wherein the second groove (12) is disposed on either side of the first groove (11); A guide template (20) is set on the concave mold (10), and the aluminum-plastic film (1) to be formed is sandwiched between the guide template (20) and the concave mold (10); At least one first punch (30), the first punch (30) includes at least one first protrusion (31), the first protrusion (31) is provided in a one-to-one correspondence with the first groove (11), the first protrusion (31) can pass through the guide template (20) and move toward the first groove (11) to stamp the receiving cavity (101); At least one second punch (40) is provided, the second punch (40) includes at least one second protrusion (41), the second protrusion (41) is provided in a one-to-one correspondence with the second groove (12), the second punch (40) is provided on either side of the first punch (30), the second protrusion (41) passes through the guide plate (20) and moves toward the second groove (12) to stamp the receiving space (102).

2. The punching die for the aluminum-plastic film of a soft-pack battery according to claim 1, characterized in that, The guide template (20) has at least one first guide hole (21) and at least one second guide hole (22). The second guide hole (22) is located on either side of the first guide hole (21). The first guide hole (21), the first groove (11) and the first protrusion (31) are arranged in a one-to-one correspondence. The second guide hole (22), the second groove (12) and the second protrusion (41) are arranged in a one-to-one correspondence.

3. The punching die for the aluminum-plastic film of a soft-pack battery according to claim 2, characterized in that, The first groove (11), the first protrusion (31) and the first guide hole (21) have the same cross-sectional shape; the second groove (12), the second protrusion (41) and the second guide hole (22) have the same cross-sectional shape.

4. The punching die for the aluminum-plastic film of a soft-pack battery according to claim 3, characterized in that, The cross-sectional shape of the first groove (11), the cross-sectional shape of the first protrusion (31), the cross-sectional shape of the first guide hole (21), the cross-sectional shape of the second groove (12), the cross-sectional shape of the second protrusion (41) and the cross-sectional shape of the second guide hole (22) are all square, cylindrical and triangular.

5. The punching die for the aluminum-plastic film of a soft-pack battery according to claim 2, characterized in that, The second groove (12), the second protrusion (41) and the second guide hole (22) are provided in a corresponding manner. The multiple second grooves (12) are all located on the same side of the first groove (11) or the multiple second grooves (12) are respectively located on the opposite side of the first groove (11); the multiple second protrusions (41) are all located on the same side of the first protrusion (31) or the multiple second protrusions (41) are respectively located on the opposite side of the first protrusion (31); the multiple second guide holes (22) are all located on the same side of the first guide hole (21) or the multiple second guide holes (22) are respectively located on the opposite side of the first guide hole (21).

6. The punching die for the aluminum-plastic film of a soft-pack battery according to claim 5, characterized in that, The distance between the plurality of second grooves (12) is adjustable, the distance between the plurality of second protrusions (41) is adjustable, and the distance between the plurality of second guide holes (22) is adjustable.

7. The punching die for the aluminum-plastic film of a soft-pack battery according to any one of claims 1-6, characterized in that, The downward stroke of the first punch (30) is adjustable; and / or, The downward stroke of the second punch (40) is adjustable.

8. The punching die for the aluminum-plastic film of a soft-pack battery according to any one of claims 1-6, characterized in that, The depth of the second groove (12) is not greater than the depth of the first groove (11).

9. The punching die for the aluminum-plastic film of a soft-pack battery according to any one of claims 1-6, characterized in that, A linkage mechanism is connected between the first punch (30) and the second punch (40), and the linkage mechanism is used to make the first punch (30) and the second punch (40) move synchronously.

10. The punching die for the aluminum-plastic film of a soft-pack battery according to any one of claims 1-6, characterized in that, The first punch (30) is connected to a first transmission mechanism to drive the first punch (30) to move; the second punch (40) is connected to a second transmission mechanism to drive the second punch (40) to move; so that the first punch (30) and the second punch (40) move asynchronously.

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