Lithium battery pole piece punching die

Abstract

The utility model discloses a lithium battery pole piece punching die, which relates to the technical field of lithium battery pole piece processing, is used for punching discrete pole pieces from a continuous insulating material strip, and comprises a top plate, an upper die plate, a pressing knife assembly, a punching knife assembly, a lower die plate and a bottom plate which are sequentially arranged from one side to the other side, the upper end of the top plate is connected with a driving hanging piece, the top plate is connected to the bottom plate through four guide columns, springs are arranged on the four guide columns, the top plate, the upper die plate and the knife pressing assembly are connected with the bottom plate in an elastic floating mode, and the knife pressing assembly comprises an outer contour plate and a knife pressing plate. The stamping knife assembly comprises a second outer contour plate and a bottom stamping knife plate. When a continuous winding material belt passes through the die, the driver drives the driving hanging piece to move up and down so as to drive the pressing knife assembly to move, so that the required lithium battery pole piece can be directly formed, the processing efficiency is high, and the practicability of the device is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pole piece processing, and specifically relates to a punching die for lithium battery pole pieces. Background Technique

[0002] Lithium batteries are a new generation of green high-energy batteries with excellent performance. The working principle of lithium batteries is to convert chemical energy into electrical energy. In this process, a conductive medium is required to transfer the converted chemical energy into electrical energy. Among common materials, metal materials have good electrical conductivity. Among metal materials, copper foil and aluminum foil are materials with good electrical conductivity and low price; the positive and negative electrode potentials of lithium batteries determine the positive and negative electrode plates. During the processing of the positive and negative electrode plates of lithium batteries, during the production process of lithium battery positive and negative electrode plates, it is necessary to punch the battery pole pieces.

[0003] Currently, during the production process of lithium battery positive and negative electrode plates, a punching die is generally required to punch and form the lithium battery positive and negative electrode plates. When punching the lithium battery positive and negative electrode plates, people first place the lithium battery positive and negative electrode plates on the operating table, and the punching die moves downward to contact the lithium battery positive and negative electrode plates, so that the punching die punches and forms the lithium battery positive and negative electrode plates. In the utility model with the Chinese patent publication number CN218310336U, a punching die for lithium battery pole pieces is proposed. This device is provided with a first chamfer cutting block and a second chamfer cutting block. The first chamfer cutting block is used to punch and chamfer the lithium battery pole piece, and the second chamfer cutting block is used to separate the lithium battery pole piece and form the shape of a lug. When the hydraulic cylinder drives the die top plate to rise, the guide rod and the support spring drive the corresponding first elastic floating plate and the second elastic floating plate to rise, which is convenient for cutting the next lithium battery pole piece, and can punch the battery pole piece into two at a time, improving the punching efficiency. However, the applicant also found that the use effect of the existing lithium battery pole piece punching die still needs to be improved. Herein, the utility model proposes a punching die for lithium battery pole pieces. Content of the Utility Model

[0004] Technical Problem to be Solved

[0005] The purpose of the utility model is to make up for the deficiencies of the existing technology and provide a punching die for lithium battery pole pieces.

[0006] Technical Solution

[0007] To achieve the above object, the present utility model provides the following technical solutions: A lithium battery pole piece punching die is used to punch discrete pole pieces from a continuous insulating tape. The punching die includes a top plate, an upper template, a pressure knife assembly, a punching knife assembly, a lower template, and a bottom plate arranged in sequence from one side to the other side. A driving pendant is connected to the upper end of the top plate. The top plate is connected to the bottom plate through four guide posts, and springs are arranged on all four guide posts. The top plate, the upper template, and the pressure knife assembly are all elastically and floatingly connected to the bottom plate. The pressure knife assembly includes an outer contour plate and a pressure knife plate. The punching knife assembly includes an outer contour plate II and a bottom punching knife plate. When the continuous wound tape passes through this die in the present utility model, the driver drives the driving pendant to move up and down, and then drives the pressure knife assembly to move, and then the required lithium battery pole pieces can be directly formed, with high processing efficiency and effectively improving the practicability of the device.

[0008] Preferably, the upper template is fixed below the top plate, and the pressure knife assembly is installed below the upper template.

[0009] Preferably, the punching knife assembly is installed above the lower template, and the lower template is fixed on the bottom plate.

[0010] Preferably, a pole piece forming groove is arranged inside the pressure knife plate, and the bottom punching knife plate is arranged directly below the pressure knife plate.

[0011] Preferably, the driving pendant is connected to the driver, and the driver is a hydraulic cylinder.

[0012] Beneficial effects:

[0013] Compared with the prior art, this lithium battery pole piece punching die has the following beneficial effects:

[0014] When the continuous wound tape passes through this die in the present utility model, the driver drives the driving pendant to move up and down, and then drives the pressure knife assembly to move, and then the required lithium battery pole pieces can be directly formed, with high processing efficiency and effectively improving the practicability of the device. Description of the drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 It is a structural schematic diagram of the present utility model;

[0017] Figure 2 It is a structural schematic diagram of the pressure knife assembly of the present utility model;

[0018] Figure 3 This is a schematic structural diagram of the punching tool assembly of the present utility model.

[0019] In the figure:

[0020] 1. Top plate; 2. Upper template; 3. Pressing tool assembly; 4. Punching tool assembly; 5. Lower template; 6. Bottom plate; 7. Driving hanging part; 8. Guide post; 9. Spring; 301. Outer contour plate; 302. Pressing tool plate; 401. Second outer contour plate; 402. Bottom punching tool plate; 3021. Pole piece forming groove. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figures 1 to 3 As shown, the present utility model provides a technical solution: a lithium battery pole piece punching die for punching discrete pole pieces from a continuous insulating tape. The punching die includes a top plate 1, an upper template 2, a pressing tool assembly 3, a punching tool assembly 4, a lower template 5, and a bottom plate 6 arranged in sequence from one side to the other side. A driving hanging part 7 is connected to the upper end of the top plate 1, and the driving hanging part 7 is connected to a driver. The driver is a hydraulic cylinder. The top plate 1 is connected to the bottom plate 6 through four guide posts 8, and springs 9 are arranged on all four guide posts 8. The top plate 1, the upper template 2, and the pressing tool assembly 3 are all elastically floatingly connected to the bottom plate 6. The pressing tool assembly 3 includes an outer contour plate 301 and a pressing tool plate 302. The punching tool assembly 4 includes a second outer contour plate 401 and a bottom punching tool plate 402. When the continuous wound tape passes through this die in the present utility model, the driver drives the driving hanging part 7 to move up and down, and then drives the pressing tool assembly 3 to move, and then the required lithium battery pole pieces can be directly formed, with high processing efficiency and effectively improving the practicability of this device.

[0023] Please particularly refer to Figure 1 , Figure 2 and Figure 3 , the upper template 2 is fixed below the top plate 1, the pressing tool assembly 3 is installed below the upper template 2, the punching tool assembly 4 is installed above the lower template 5, and the lower template 5 is fixed on the bottom plate 6.

[0024] Please particularly refer to Figure 3 , a pole piece forming groove 3021 is arranged inside the pressing tool plate 302, and the bottom punching tool plate 402 is arranged directly below the pressing tool plate 302.

[0025] Working principle: When the continuous winding tape in the utility model passes through this mold, the driver drives the driving pendant 7 to move up and down, and then drives the pressing knife assembly 3 to move, so that the required lithium battery electrode can be directly formed, with high processing efficiency and effectively improving the practicability of the device.

[0026] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0027] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery pole piece punching die, used for punching out discrete pole pieces from a continuous insulating material strip, characterized in that: The punching die comprises a top plate (1), an upper template (2), a press knife assembly (3), a punch knife assembly (4), a lower template (5) and a bottom plate (6) which are arranged in sequence from one side to the other side. The upper end of the top plate (1) is connected to a driving hanger (7). The top plate (1) is connected to the bottom plate (6) via four guide pillars (8), and springs (9) are arranged on the four guide pillars (8). The top plate (1), the upper template (2) and the press knife assembly (3) are all elastically floatingly connected to the bottom plate (6). The press knife assembly (3) comprises an outer contour plate (301) and a press knife plate (302). The punch knife assembly (4) comprises an outer contour plate 2 (401) and a bottom punch knife plate (402).

2. A lithium battery pole piece punching die according to claim 1, characterized in that: The upper template (2) is fixed below the top plate (1), and the knife pressing assembly (3) is installed below the upper template (2).

3. A lithium battery pole piece punching die according to claim 1, characterized in that: The punching knife assembly (4) is installed above the lower template (5), and the lower template (5) is fixed on the bottom plate (6).

4. A lithium battery pole piece punching die according to claim 1, characterized in that: The press plate (302) is provided with a pole piece forming groove (3021) inside, and the bottom punch plate (402) is arranged directly below the press plate (302).

5. A lithium battery pole piece punching die according to claim 1, characterized in that: The driving pendant (7) is connected to a driver, and the driver is a hydraulic cylinder.

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