Multi-tab battery tab punching equipment

Abstract

The utility model discloses a multi-tab battery tab punching device, which is characterized in that a support base, a mounting seat, a driving component, at least two guide posts, a pressing plate, a positioning clamp component, a punch and a movable positioning plate component are arranged in a matched manner, and the movable positioning plate component is arranged, so that the multi-tab battery tab punching device can be used for punching the multi-tab battery tab according to different types of lithium ion batteries. The placement position of the roll core and the punching position of the roll core pole piece part are adjusted, different cutting dies do not need to be used, punching of the roll core pole piece part can be completed through one punch, and the situation that punching of the roll core pole piece is misplaced can also be avoided; and meanwhile, winding of the pole piece and the diaphragm is completed firstly to form the winding core without cutting the tabs, then the punch is used for punching the pole piece part of the winding core at a time to obtain the tabs, the tabs do not need to be aligned during winding, and the defects that the alignment effect of the tabs is poor, the tabs are reversely folded and the tabs are provided with materials are effectively overcome.

Description

Technical Field

[0001] This utility model relates to the technical field of battery tab processing, specifically a multi-tab battery tab punching and cutting equipment. Background Technology

[0002] In the production of multi-tab soft-pack lithium-ion batteries, tab punching is performed during the electrode sheet production stage. Therefore, multiple tabs need to be punched out from a single electrode sheet. The position of the tabs must be confirmed in advance during the electrode sheet production process. Different models of lithium-ion batteries use different die-cutting dies. When there are many types of lithium-ion batteries, the die-cutting die configuration is also more numerous. It is easy to use the wrong die during electrode sheet punching. Furthermore, misalignment can easily occur during electrode sheet punching, resulting in material being stuck on the tabs and causing scrap. During winding, due to the influence of different winding machines and differences in operators, the alignment of multiple tabs is not good, which can easily lead to problems such as tab misalignment and tab folding, resulting in a high defect rate. Utility Model Content

[0003] Therefore, it is necessary to provide a multi-tab battery tab punching device. This can solve the problems of using the wrong die and poor alignment of multiple tabs after punching, which are common during electrode punching.

[0004] A multi-tab battery tab punching device includes a support base, a mounting base, a drive assembly, at least two guide columns, a pressure plate, a positioning fixture assembly, a punch, and a movable positioning plate assembly.

[0005] The mounting base is mounted on the support base, the drive assembly is mounted on the mounting base, and the at least two guide posts are symmetrically arranged on the mounting base with the drive assembly as the center. The pressure plate is fixedly or detachably connected to the guide posts and the drive assembly respectively.

[0006] The positioning fixture assembly includes an upper cover plate, an upper template, a middle template, a lower template, and at least two guide shafts. The lower template is mounted on the mounting base. The two guide shafts are symmetrically arranged on the lower template and pass through the middle template and the upper template in sequence. The upper cover plate is mounted on the upper template. One end of the punch is mounted on the upper template, and the other end passes through the middle template. The movable positioning plate assembly is mounted on the lower template. The lower template has a punch receiving hole at a position corresponding to the punch in the vertical direction.

[0007] In one embodiment, the drive assembly includes a cylinder, a cylinder connector, and a cylinder mounting plate. The cylinder connector is mounted on the pressure plate, and the cylinder mounting plate is mounted on the pressure plate and abuts against the cylinder connector. The cylinder is mounted on the mounting base, and the cylinder extension rod is fixedly connected to the cylinder connector.

[0008] In one embodiment, the cylinder mounting plate has a U-shaped structure for pressing the cylinder connector onto the pressure plate.

[0009] In one embodiment, the movable positioning plate assembly includes a positioning plate and a positioning element. The positioning plate has an oblong hole. The positioning plate is placed on the lower template. The positioning element passes through the oblong hole and is detachably installed on the lower template, fixing the positioning plate at a preset position on the lower template.

[0010] In one embodiment, the middle template has a notch on the side near the lower template, and the notch is used to limit the battery core to be punched.

[0011] In one embodiment, the multi-tab battery tab punching equipment further includes a plurality of spring rubber columns, the two ends of which are respectively installed on the upper template and the middle template.

[0012] In one embodiment, the multi-tab battery tab punching device further includes two springs, which are sleeved on the guide shaft and abut against the middle template and the lower template at their two ends, respectively.

[0013] In one embodiment, the multi-tab battery tab punching device further includes two limiting screws, which are symmetrically arranged on the bottom surface of the pressure plate.

[0014] The aforementioned multi-tab battery tab punching equipment, through the coordinated arrangement of a support base, mounting base, drive assembly, at least two guide columns, pressure plate, positioning fixture assembly, punch, and movable positioning plate assembly, allows for adjustment of the core placement position and the punching position of the core electrode portion according to different lithium-ion battery models. It eliminates the need for different die-cutting molds, using only one punch to complete the punching of the core electrode portion, thus avoiding misalignment during core electrode punching. Simultaneously, the electrode and separator are first wound to form an uncut core, and then the punch is used to punch the core electrode portion in one go, obtaining multiple tabs. During winding, there is no need to align multiple tabs, effectively avoiding defects such as poor alignment, tab folding, and material smearing. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the assembly structure of a multi-tab battery tab punching device according to an embodiment of the present invention;

[0016] Figure 2 for Figure 1 A schematic diagram of the positioning fixture assembly structure of a multi-tab battery tab punching equipment according to an embodiment of this utility model;

[0017] Figure 3 for Figure 2 A schematic diagram of the assembly structure of the middle and lower templates of a multi-tab battery tab punching device according to an embodiment of this utility model;

[0018] Figure 4 for Figure 1 A schematic diagram of the movable positioning plate assembly structure of a multi-tab battery tab punching device according to an embodiment of this utility model;

[0019] Figure 5 for Figure 1 A schematic diagram of the drive assembly structure of a multi-tab battery tab punching device according to an embodiment of this utility model. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediary component present. Conversely, when a component is said to be "directly" connected to another component, there is no intermediary component.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0023] like Figure 1 As shown, a multi-tab battery tab punching device includes a support base 1, a mounting base 2, a drive assembly 3, at least two guide columns 4, a pressure plate 5, a positioning fixture assembly 6, a punch 7, and a movable positioning plate assembly 8.

[0024] The mounting base 2 is mounted on the support base 1, the drive assembly 3 is mounted on the mounting base 2, and at least two guide posts 4 are symmetrically arranged on the mounting base 2 with the drive assembly 3 as the center. The pressure plate 5 is fixedly or detachably connected to the guide posts 4 and the drive assembly 3 respectively.

[0025] like Figure 2 and Figure 3 As shown, the positioning fixture assembly 6 includes an upper cover plate 61, an upper template 62, a middle template 63, a lower template 64, and at least two guide shafts 65. The lower template 64 is mounted on the mounting base 2. The two guide shafts 65 are symmetrically arranged on the lower template 64 and pass through the middle template 63 and the upper template 62 in sequence. The upper cover plate 61 is mounted on the upper template 62. One end of the punch 7 is mounted on the upper template 62, and the other end passes through the middle template 63. The movable positioning plate assembly 8 is mounted on the lower template 64. The lower template 64 has a punch receiving hole 641 at a position corresponding to the punch 7 in the vertical direction.

[0026] The template 63 has a through hole 632 for the punch 7 to pass through the through hole 632 to punch the electrode sheet.

[0027] Before punching the electrode sheets of the battery cell, the electrode sheets and separator are first wound to form a core of the electrode sheets to be cut. The core 100 is fixed by the movable positioning plate assembly 8, and the core electrode sheet to be cut is placed at a preset position above the punch receiving hole 641. The shape and size of the punch 7 and the punch receiving hole 641 are adapted to each other. Under the combined force of the punch 7 and the punch receiving hole 641, the electrode sheet inside the punch receiving hole 641 is punched off, leaving the electrode tab.

[0028] During the electrode cutting of the battery cell, the drive assembly 3 drives the pressure plate 5 to move towards the positioning fixture assembly 6 until it comes into contact with the upper cover plate 61. Then, the upper cover plate 61 continues to press the upper template 62 and the middle template 63 to move towards the lower template 64. The upper template 62 drives the punch 7 to pass through the through hole 632 in the middle template 63 and move towards the punch receiving hole 641 of the lower template 64 until the punch 7 completes the electrode cutting. The electrode waste is then collected in the waste recycling box from the punch receiving hole 641.

[0029] In this way, the multi-tab battery tab punching equipment, through the coordinated arrangement of the support base 1, mounting base 2, drive assembly 3, at least two guide columns 4, pressure plate 5, positioning fixture assembly 6, punch 7, and movable positioning plate assembly 8, allows for adjustment of the core placement position and the punching position of the core electrode portion according to different lithium-ion battery models. It eliminates the need for different die-cutting molds; a single punch 7 can complete the punching of the core electrode portion, avoiding misalignment during core electrode punching. Simultaneously, the electrode and separator are first wound to form an uncut core, and then the punch 7 is used to punch the core electrode portion in one go, obtaining multiple tabs. During winding, it is not necessary to align multiple tabs, effectively avoiding defects such as poor alignment, tab folding, and material smearing.

[0030] like Figure 5As shown, in one embodiment, the drive assembly 3 includes a cylinder 31, a cylinder connector 32, and a cylinder mounting plate 33. The cylinder connector 32 is mounted on the pressure plate 5, and the cylinder mounting plate 33 is mounted on the pressure plate 5 and abuts against the cylinder connector 32. The cylinder 31 is mounted on the mounting base 2, and the cylinder telescopic rod is fixedly connected to the cylinder connector 32. The cylinder mounting plate 33 has a U-shaped structure and is used to press the cylinder connector 32 tightly onto the pressure plate 5.

[0031] In this way, the cylinder connector 32 is pulled by the telescopic rod of the cylinder 31, and the pressure plate 5 is moved closer to or away from the positioning clamp assembly 6 by the cylinder connector 32. The cylinder mounting plate 33 can press the cylinder connector 32 tightly onto the pressure plate 5, which can effectively prevent the cylinder connector 32 from falling off the pressure plate 5.

[0032] like Figure 4 As shown, in one embodiment, the movable positioning plate assembly 8 includes a positioning plate 81 and a positioning member 82. The positioning plate 81 has a waist-shaped hole 811. The positioning plate 81 is placed on the lower template 64. The positioning member 82 passes through the waist-shaped hole 811 and is detachably installed on the lower template 64, fixing the positioning plate 81 at a preset position on the lower template 64.

[0033] Thus, the positioning element 82 can be a screw, with a threaded hole adapted to the screw at a preset position on the lower template 64. The positioning plate 81 has an "L" shaped structure and is used to fix one corner of the core 100. The positioning plate 81 has a waist-shaped hole 811, which can be pushed according to different cores, so that the waist-shaped hole 811 of the positioning plate 81 slides along the positioning element 82 to determine the position where the core 100 needs to be fixed. Then, the positioning element 82 is locked onto the positioning plate 81 and fixed onto the lower template 64. The core to be punched is then placed against the positioning plate 81, so that the tab of the core to be punched is placed on the punch receiving hole 641. According to the required tab size, the part of the electrode to be cut is accommodated in the punch receiving hole 641. Through the cooperation of the "L" shaped positioning plate 81 and the positioning element 82, different models of lithium-ion battery cores can be fixed, making it more applicable.

[0034] In one embodiment, the middle template 63 has a notch 631 on the side near the lower template 64, and the notch 631 is used to limit the battery core to be punched.

[0035] In this way, by setting the notch 631, when the middle template 63 moves to the preset position in the direction of the lower template 64, the core to be punched is restricted within the notch 631, effectively preventing the electrode sheet of the core 100 to be punched from moving during the punching process.

[0036] In one embodiment, the multi-tab battery tab punching equipment further includes a plurality of spring rubber columns 9, the two ends of which are respectively installed on the upper template 62 and the middle template 63.

[0037] In this way, as the upper template 62 moves toward the middle template 63 under the action of external force, the spring rubber column 9 will deform. After the external force is removed, the spring rubber column 9 will drive the upper template 62 to return to its initial position during the process of restoring its deformation, thus resetting the upper template 62.

[0038] In one embodiment, the multi-tab battery tab punching device further includes two springs, which are sleeved on the guide shaft and abut against the middle template 63 and the lower template 64 at their respective ends.

[0039] In this way, when the middle template 63 moves towards the lower template 64 under the action of external force, the spring sleeved on the guide shaft will deform. After the external force is removed, the spring will drive the middle template 63 to return to the initial position during the process of restoring its deformation.

[0040] In one embodiment, the multi-tab battery tab punching device further includes two limiting screws 10, which are symmetrically arranged on the bottom surface of the pressure plate 5.

[0041] In this way, when the drive assembly 3 drives the pressure plate 5 to move towards the positioning fixture assembly 6, the two limit screws 10 also move towards the bottom of the mounting base 2 along with the pressure plate 5 until they abut against the bottom of the mounting base 2. The pressure plate 5 will not continue to move, which plays a good role in limiting the movement of the pressure plate 5 and preventing the drive assembly 3 from continuously driving the pressure plate 5 to squeeze the positioning fixture assembly 6, causing damage to the positioning fixture assembly 6.

[0042] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-tab battery tab punching device, characterized by: Includes a support base, mounting base, drive assembly, at least two guide pillars, pressure plate, positioning fixture assembly, punch, and movable positioning plate assembly; The mounting base is mounted on the support base, the drive assembly is mounted on the mounting base, and the at least two guide posts are symmetrically arranged on the mounting base with the drive assembly as the center. The pressure plate is fixedly or detachably connected to the guide posts and the drive assembly respectively. The positioning fixture assembly includes an upper cover plate, an upper template, a middle template, a lower template, and at least two guide shafts. The lower template is mounted on the mounting base. The two guide shafts are symmetrically arranged on the lower template and pass through the middle template and the upper template in sequence. The upper cover plate is mounted on the upper template. One end of the punch is mounted on the upper template, and the other end passes through the middle template. The movable positioning plate assembly is mounted on the lower template. The lower template has a punch receiving hole at a position corresponding to the punch in the vertical direction.

2. The multi-tab battery tab punching device according to claim 1, wherein: The drive assembly includes a cylinder, a cylinder connector, and a cylinder mounting plate. The cylinder connector is mounted on the pressure plate, and the cylinder mounting plate is mounted on the pressure plate and abuts against the cylinder connector. The cylinder is mounted on the mounting base, and the cylinder extension rod is fixedly connected to the cylinder connector.

3. A multi-tab battery tab punching device according to claim 2, characterized in that: The cylinder mounting plate has a U-shaped structure and is used to press the cylinder connector onto the pressure plate.

4. The multi-tab battery tab punching device of claim 1, wherein: The movable positioning plate assembly includes a positioning plate and a positioning component. The positioning plate has an oblong hole. The positioning plate is placed on the lower template. The positioning component passes through the oblong hole and is detachably installed on the lower template, fixing the positioning plate at a preset position on the lower template.

5. The multi-tab battery tab punching device of claim 1, wherein: The middle template has a notch on the side near the lower template, and the notch is used to limit the battery core to be punched.

6. The multi-tab battery tab punching device of claim 1, wherein: The multi-tab battery tab punching equipment also includes multiple spring rubber columns, with both ends of the spring rubber columns respectively installed on the upper template and the middle template.

7. The multi-tab battery tab punching device of claim 1, wherein: The multi-tab battery tab punching equipment also includes two springs, which are sleeved on the guide shaft and abut against the middle template and the lower template at both ends, respectively.

8. The multi-tab battery tab punching device of claim 1, wherein: The multi-tab battery tab punching equipment also includes two limiting screws, which are symmetrically arranged on the bottom surface of the pressure plate.

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