Tab shaping jig and tab shaping apparatus

Abstract

The utility model relates to the technical field of battery discloses a tab shaping clamp and tab shaping equipment, the tab shaping clamp includes base, top plate, clamping plate and cutter mechanism, at least two clamping plates are connected on the base and are arranged along the first direction interval, and the accommodating area for accommodating the electric core is formed between two clamping plates, and two clamping plates are used for clamping electric core together, the bottom of top plate is connected with at least one cutter mechanism, and the cutter mechanism includes two cutting knives, and two cutting knives are used to cut one tab on the electric core, and two cutting knives can be adjusted position along the linear of first direction relative to top plate, the tab shaping equipment includes driver and the tab shaping clamp, and the driver is connected at least one of base and top plate and is used for driving base and top plate to be close to each other or to be far away from each other in the longitudinal direction, and the utility model mainly solves the problem of how to flexibly adjust the width size and position after tab cutting while realizing tab cutting.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to a tab shaping fixture and tab shaping equipment. Background Technology

[0002] A pouch cell has at least two tabs with opposite polarities extending outwards; one tab serves as the positive electrode, and the other as the negative electrode. Both tabs act as current collection terminals for the internal electrode plates of the cell. The dimensional and positional accuracy of these tabs directly affects the quality of the subsequent assembly into a battery module or battery pack. In existing technologies, the tab width is usually pre-designed to be slightly larger to quickly meet different usage requirements for tab width or position through tab cutting. Currently, tab cutting relies heavily on fixed molds and requires manual cell positioning. Existing tab cutting methods have the following problems:

[0003] First: The edge distance between the tab and the edge of the cell and the center distance between the two tabs are prone to deviation, resulting in poor positional accuracy of the tab relative to the cell. Inaccurate tab position can easily lead to offset and poor soldering during the PACK stage of battery welding, thereby affecting the welding reliability, consistency and safety of the battery.

[0004] Second: Fixed molds have poor versatility and cannot flexibly adjust the usage requirements of different specifications of battery cells for different tab cutting sizes, lacking the flexibility to cut tabs.

[0005] Therefore, there is an urgent need for a shaping fixture that can flexibly adjust the width and position of the cut tabs to improve the consistency of the tab position and the yield of subsequent soldering in the PACK stage. Utility Model Content

[0006] This utility model provides a tab shaping fixture and a tab shaping device, which mainly solves the technical problem of how to flexibly adjust the width and position of the tab after cutting while cutting the tab.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A tab shaping fixture includes a base, a top plate, a clamping plate, and a cutting tool mechanism;

[0009] At least two of the clamping plates are connected to the base and arranged at intervals along a first direction, and an accommodating area for accommodating the battery cell is formed between the two clamping plates. The two clamping plates are used to clamp the battery cell together.

[0010] At least one of the cutting mechanisms is connected to the bottom of the top plate. The cutting mechanism includes two cutting blades for cutting one tab on the battery cell. The position of both cutting blades is adjustable relative to the top plate along the first direction.

[0011] In one of the technical solutions, the tab shaping fixture further includes a pad plate, which is fixed to the top of the base and located between the two clamping plates, and the pad plate is used to support the tab.

[0012] In one of the technical solutions, two pads are provided between the two clamping plates. One pad is used to support one of the electrode tabs, and the other pad is used to support the other electrode tab. The bottom of the top plate is connected to two cutting tool mechanisms. The two cutting blades in the two cutting tool mechanisms can be adjusted in a straight line along the first direction relative to the top plate.

[0013] In one of the technical solutions, the tab shaping fixture further includes an adjustment device connected between the top plate and the cutter. The adjustment device is used to adjust the position of the cutter relative to the top plate in a straight line in the first direction.

[0014] In one of the technical solutions, the adjusting device is a fine-tuning screw or a scale positioning structure.

[0015] In one of the technical solutions, at least one of the clamping plates is adjustable in position relative to the base along a straight line in the first direction to change the width of the receiving area in the first direction.

[0016] In one of the technical solutions, a first slide rail is connected between the clamping plate and the base, and the first slide rail extends along the first direction.

[0017] In one of the technical solutions, a second slide rail is connected between the cutter and the top plate, and the second slide rail extends along the first direction.

[0018] In one of the technical solutions, one of the base and the top plate is connected to a guide post extending longitudinally, and the other is provided with a guide hole that mates with the guide post.

[0019] This application also provides an electrode shaping device, including a driver and the electrode shaping fixture described above. The driver is connected to at least one of the base and the top plate, and the driver is used to drive the base and the top plate to move closer to or further away from each other in the longitudinal direction.

[0020] Compared with the prior art, the tab shaping fixture provided by this utility model has at least the following beneficial effects:

[0021] When in use, place the battery cell with the tab to be cut in the receiving area between the two clamping plates. The two clamping plates clamp the battery cell to ensure that the battery cell will not shift in position and to improve the accuracy of the subsequent tab cutting. Then, adjust the position of the cutter in the first direction according to the actual position of the tab to be cut. Then, simply bring the top plate and the base close to each other to complete the cutting of the tab by the cutter.

[0022] Since each cutter in this solution can be adjusted in the first direction, the final width and position of the tabs can be flexibly adjusted. That is, this solution can easily and accurately adjust the edge distance of the tabs and the center distance between the two tabs, which is conducive to quickly meeting the usage requirements of the battery cell for different tab widths or positions, thereby improving the consistency of the tab position and the yield of subsequent tab soldering in the PACK stage. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a tab shaping fixture provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of the structure of a battery cell after the tabs have been cut by a tab shaping fixture, as provided in an embodiment of this application.

[0026] Figure label:

[0027] 1. Base; 11. Accommodation area; 2. Top plate; 3. Clamping plate; 4. Tool mechanism; 41. Cutting blade; 5. Pad plate; 6. First slide rail; 7. Second slide rail; 10. Battery cell; 20. Electrode; 201. First side; 202. Second side. Detailed Implementation

[0028] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0029] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0030] It should be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0032] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0033] Please refer to the following: Figure 1 and Figure 2 This utility model provides a tab shaping fixture, which mainly includes a base 1, a top plate 2, a clamping plate 3, and a cutting mechanism 4. At least two clamping plates 3 are connected to the base 1 and arranged at intervals along a first direction X. A receiving area 11 for accommodating a battery cell is formed between the two clamping plates 3, and the two clamping plates 3 are used to jointly clamp the battery cell 10. At least one cutting mechanism 4 is connected to the bottom of the top plate 2. The cutting mechanism 4 can be understood as including two cutters 41. The two cutters 41 are used to cut one tab 20 from the battery cell 10. Specifically, one cutter 41 is used to cut off one side of the tab 20 in the width direction (parallel to the first direction X) to form a first side 201, and the other cutter 41 is used to cut off the other side of the tab 20 in the width direction to form a second side 202. Furthermore, the positions of both cutters 41 relative to the top plate 2 can be adjusted linearly along the first direction X.

[0034] Specifically, in use, the battery cell 10 with tab 20 to be cut is placed in the receiving area 11 between two clamping plates 3. The two clamping plates 3 clamp the battery cell 10 to ensure that the battery cell 10 will not shift in position and to improve the accuracy of subsequent tab 20 cutting. Then, the position of the cutter 41 in the first direction X is adjusted according to the actual required cutting position of the tab 20. Then, the top plate 2 and the base 1 are brought close to each other to complete the cutting of the tab 20 by the cutter 41.

[0035] In summary, since the position of each cutter 41 in this solution can be adjusted in the first direction X, the final width and position of the tab 20 after cutting can be flexibly adjusted. That is, this solution can easily and accurately adjust the edge distance of the tab 20 and the center distance between two tabs 20, which is conducive to quickly meeting the usage requirements of the cell 10 for different widths or positions of the tab 20, thereby improving the consistency of the tab 20 position and the yield of the tab 20 in the subsequent PACK stage soldering.

[0036] Please refer to them again. Figure 1 and Figure 2 The tab shaping fixture in this embodiment also includes a pad 5, which is fixed to the top of the base 1 and located between the two clamping plates 3. The pad 5 is used to support the tab 20 to prevent the tab 20 from being cut by the cutter 41 in a suspended state, which helps to further improve the accuracy of cutting the tab 20.

[0037] Please refer to them again. Figure 1 and Figure 2 This design incorporates two pads 5 between two clamping plates 3, one of which supports one tab 20, and the other supports the other tab 20. Two cutting mechanisms 4 are connected to the bottom of the top plate 2, and the two cutting blades 41 within each mechanism 4 are adjustable relative to the top plate 2 along a linear direction X. This design allows the tab-shaping fixture to cut both tabs 20 in one operation, facilitating the rapid fulfillment of cutting requirements when both the positive and negative tabs extend outwards from the same side of the cell 10.

[0038] In this embodiment, the tab shaping fixture can be designed to also include an adjustment device. The adjustment device is connected between the top plate 2 and the cutter 41, and is used to adjust the position of the cutter 41 relative to the top plate 2 in a straight line in the first direction X. For example, the adjustment device can be a knob-type fine-tuning screw, or it can be a scale positioning structure. When the adjustment device is a fine-tuning screw, it can be understood that the fine-tuning screw is rotatably connected to the top plate and threadedly connected to a corresponding cutter 41. The scale positioning structure can be understood to include a fixing block and a scale. The fixing block is used to achieve a fixed connection or detachable connection between the cutter 41 and the top plate 2. The scale needs to be placed on one side of the cutter 41 and extend along the first direction X. By observing the scale of the scale, the cutter 41 can be accurately adjusted to the desired position in the first direction. The fixed block secures the cutter 41 to the top plate 2 to stabilize its adjusted position.

[0039] Please refer to them again. Figure 1 and Figure 2 At least one clamping plate 3 can be adjusted in position relative to the base 1 along a straight line in the first direction X, thereby changing the width of the accommodating area 11 in the first direction X. This facilitates the cutting of tabs 20 for battery cells 10 with different widths. Preferably, a first slide rail 6 is connected between the clamping plate 3 and the base 1, extending along the first direction X. This first slide rail 6 improves the movement accuracy of the clamping plate 3 in the first direction X, thereby improving the positional accuracy of the battery cell 10 after clamping, and thus improving the accuracy of the tabs 20 after cutting. In addition, a second slide rail 7 is connected between the cutter 41 and the top plate 2, also extending along the first direction X. This second slide rail 7 improves the movement accuracy of the cutter 41 in the first direction X, thereby improving the accuracy of the tabs 20 after cutting.

[0040] In one embodiment, one of the base 1 and the top plate 2 can be connected to a plurality of longitudinally extending guide posts, while the other can be provided with guide holes that cooperate with the guide posts. This design helps to improve the positional accuracy of the base 1 and the top plate 2 when they are close to each other, thereby improving the accuracy of cutting the tab 20.

[0041] This embodiment also provides a tab shaping device, which includes a driver and the aforementioned tab shaping fixture. The driver is connected to either the base 1 or the top plate 2. The driver drives the base 1 and the top plate 2 to move closer or further apart longitudinally, thereby automatically achieving the purpose of cutting the tab 20 with the cutter 41, thus improving the efficiency of cutting the tab 20. Specifically, the driver can be connected only to the base 1 without connecting to the top plate 2. In this case, the top plate 2 can be considered fixed, and the cutter 41 can automatically cut the tab 20 simply by driving the base 1 upward towards the top plate 2. Alternatively, the driver can be connected only to the top plate 2 without connecting to the base 1. In this case, the base 1 can be considered fixed, and the cutter 41 can automatically cut the tab 20 simply by driving the top plate 2 downward towards the base 1. The driver can also be connected to the base 1 and the top plate 2 respectively. When working, the base 1 moves upward and the top plate 2 moves downward under the drive of the driver, so that the base 1 and the top plate 2 move closer to each other. This scheme can also automatically achieve the purpose of cutting the tabs of the cutter 41.

[0042] The above are merely preferred embodiments of the present utility model, and only specifically describe the technical principles of the present utility model. These descriptions are only for explaining the principles of the present utility model and should not be construed as limiting the scope of protection of the present utility model in any way. Based on this explanation, any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model, as well as other specific embodiments of the present utility model that can be conceived by those skilled in the art without creative effort, should be included within the scope of protection of the present utility model.

Claims

1. A tab shaping fixture, characterized in that, Includes base, top plate, clamping plate and cutting tool mechanism; At least two of the clamping plates are connected to the base and arranged at intervals along a first direction, and an accommodating area for accommodating the battery cell is formed between the two clamping plates. The two clamping plates are used to clamp the battery cell together. At least one of the cutting mechanisms is connected to the bottom of the top plate. The cutting mechanism includes two cutting blades for cutting one tab of the battery cell. The position of both cutting blades is adjustable relative to the top plate along the first direction.

2. The electrode ear shaping fixture as described in claim 1, characterized in that, The tab shaping fixture also includes a pad, which is fixed to the top of the base and located between the two clamping plates. The pad is used to support the tab.

3. The tab shaping fixture as described in claim 2, characterized in that, Two pads are provided between the two clamping plates. One pad is used to support one of the electrode tabs, and the other pad is used to support the other electrode tab. Two cutting tool mechanisms are connected to the bottom of the top plate. The two cutting tools in the two cutting tool mechanisms can be adjusted in a straight line along the first direction relative to the top plate.

4. The tab shaping fixture as described in claim 1, characterized in that, The tab shaping fixture also includes an adjustment device connected between the top plate and the cutter. The adjustment device is used to adjust the position of the cutter relative to the top plate in a straight line in the first direction.

5. The electrode ear shaping fixture as described in claim 4, characterized in that, The adjustment device is a fine-tuning screw or a scale positioning structure.

6. The tab shaping fixture as described in claim 1, characterized in that, At least one of the clamping plates is adjustable in position relative to the base along a straight line in the first direction to change the width of the receiving area in the first direction.

7. The tab shaping fixture as described in claim 6, characterized in that, A first slide rail is connected between the clamping plate and the base, and the first slide rail extends along the first direction.

8. The tab shaping fixture as described in claim 1, characterized in that, A second slide rail is connected between the cutter and the top plate, and the second slide rail extends along the first direction.

9. The tab shaping fixture as described in claim 1, characterized in that, One of the base and the top plate is connected to a longitudinally extending guide post, and the other is provided with a guide hole that mates with the guide post.

10. An electrode ear shaping device, characterized in that, Includes a driver and a tab shaping fixture as described in any one of claims 1 to 8, wherein the driver is connected to at least one of the base and the top plate, and the driver is used to drive the base and the top plate to move closer to or further away from each other in the longitudinal direction.

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