A battery positive electrode tab welding jig

Abstract

The utility model provides a kind of battery positive pole connecting piece welding fixture, belong to battery manufacturing technical field, including support leg, its characterized in that, the top of support leg is fixedly connected with workbench, the top of workbench is provided with welding device, the top of workbench is provided with clamping structure, the clamping structure includes bearing station, the bearing station is set in the top of workbench, rotating shaft is arranged in the inside of bearing station.The utility model is provided with clamping structure, so that the slider in the cam two sides is slid in the rectangular groove inner wall by rectangular block, the relative distance is far at this time, staff can place workpiece in fixed block middle, adjust handle again at this time, so that cam is in vertical state, so that slider is clamped by displacement workpiece, avoid workpiece to appear to fall off when welding, also avoid staff to be injured by falling workpiece, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and more specifically, to a battery positive electrode connecting piece welding fixture. Background Technology

[0002] The current welding process for positive electrode connectors in power batteries faces three major technical bottlenecks: First, traditional manual fixtures have low positioning accuracy, resulting in high welding offset rates and severely affecting the consistency of battery modules; second, at welding temperatures, ordinary fixtures deform due to thermal expansion, causing batch welding defects; and third, existing pneumatic fixtures require disassembly and reassembly for replacement, which cannot meet the needs of flexible production. Existing technical solutions are no longer sufficient to meet the manufacturing requirements of next-generation power batteries.

[0003] A search revealed that Chinese patent CN 222020942 U discloses a "welding fixture for a PMA battery positive electrode connector," which includes a body with a through groove in the middle and a plurality of battery receiving holes arrayed on the body, the through groove passing through the battery receiving holes; the body has a plurality of connecting grooves along its edge, the connecting grooves communicating with the battery receiving holes. However, it still has the following drawbacks:

[0004] (1) Traditional manual fixtures have low positioning accuracy, resulting in high welding offset rate, which seriously affects the consistency of battery modules and easily leads to waste;

[0005] (2) At the same time, it is difficult to automatically adjust the position of the workpiece during use, which affects the processing. To address this, a welding fixture for the positive electrode connecting piece of a battery is proposed. Utility Model Content

[0006] The purpose of this invention is to address the problem that traditional manual clamps have low positioning accuracy, resulting in high welding offset rates, which seriously affect the consistency of battery modules and easily lead to waste.

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

[0008] The present invention is as follows: a battery positive electrode connecting piece welding fixture, including a support leg, a worktable fixedly connected to the top of the support leg, a welding device provided on the top of the worktable, and a clamping structure provided on the top of the worktable;

[0009] The clamping structure includes a support platform, which is set on the top of the workbench. A rotating shaft is provided inside the support platform, and a cam is fixedly connected to the circumferential surface of the rotating shaft. A moving block is provided on the inner wall of the support platform. A rectangular groove is opened at the bottom of the support platform, and a rectangular block is slidably connected to the inner wall of the rectangular groove. A handle is fixedly connected to the circumferential surface of the rotating shaft.

[0010] As a preferred technical solution of this utility model, a fixed block is fixedly connected to the top of the movable block, a connecting rod is fixedly connected to the side of the movable block, and one end of a spring is fixedly connected to the circumferential surface of the connecting rod. The spring is located away from the side of the movable block from the connecting rod, and the function of the spring is to reset the two movable blocks.

[0011] As a preferred embodiment of this utility model, there are two fixing blocks, which are symmetrical to each other along the vertical central axis of the support platform, and there are two connecting rods, which are symmetrical to each other along the vertical central axis of the support platform.

[0012] As a preferred technical solution of this utility model, a moving device is provided on the top of the workbench. The moving device includes an action groove, which is opened on the top of the workbench. A drive motor is provided on the side of the workbench. A threaded rod is fixedly connected to the end of the output shaft of the drive motor. A threaded sleeve is threadedly connected to the circumferential surface of the threaded rod. The function of the action groove is to allow the threaded rod to move on its inner wall, while allowing the limiting block fixed on the circumferential surface of the threaded sleeve to slide in the action groove.

[0013] As a preferred technical solution of this utility model, a connecting block is fixedly connected to the circumferential surface of the threaded sleeve, and a limiting block is fixedly connected to the circumferential surface of the threaded sleeve. The function of the limiting block is to limit the movement path of the threaded sleeve and prevent the limiting block from moving away from the original movement path.

[0014] As a preferred technical solution of this utility model, the connecting block is fixedly connected to the bottom of the support platform, and there are two limiting blocks, which are symmetrical to each other along the vertical central axis of the working groove. The limiting blocks are slidably connected to the inner wall of the working groove. The function of the connecting block is to drive the support platform fixed on the top of the connecting block to move through the movement of the threaded sleeve.

[0015] As a preferred technical solution of this utility model, there are several supporting legs, which are symmetrical to each other along the vertical central axis of the worktable; there are two cams, which are symmetrical to each other along the vertical central axis of the bearing platform; there are two moving blocks, which are symmetrical to each other along the vertical central axis of the bearing platform; the rectangular groove is located on the movement trajectory of the rectangular block; the rectangular block is fixedly connected to the bottom of the moving block; the function of the cam is to adjust the clamping range of the moving block by the shape of the cam, thereby clamping the workpiece.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Through the clamping structure, the moving blocks on both sides of the cam slide on the inner wall of the rectangular groove through the rectangular block. At this time, the relative distance is relatively far, and the operator can place the workpiece in the middle of the fixed block. Then, the handle is adjusted again so that the cam is in a vertical position, so that the moving block clamps the workpiece by displacement, which prevents the workpiece from falling off during welding and causing resource damage. It also prevents the operator from being injured by falling workpieces, thus improving work efficiency.

[0018] 2. The moving device enables the connecting block fixed on the circumferential surface of the threaded sleeve to drive the bearing platform to continue moving. After the bearing platform is adjusted to a suitable position, the workpiece can be processed subsequently, which improves work efficiency. The limit block moves on the inner wall of the working groove to prevent the bearing sleeve from getting stuck during movement. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a battery positive electrode connecting piece welding fixture provided by this utility model;

[0020] Figure 2 A schematic cross-sectional view of the handle of a battery positive electrode connecting piece welding fixture provided by this utility model;

[0021] Figure 3 This utility model provides a welding fixture for a battery positive electrode connector. Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0022] Figure 4 A three-dimensional overall structural diagram of the fixing block of a battery positive electrode connecting piece welding fixture provided by this utility model;

[0023] Figure 5 This utility model provides a welding fixture for a battery positive electrode connector. Figure 4 Enlarged schematic diagram of the three-dimensional structure at point B.

[0024] The diagram shows: 1. Support leg; 2. Workbench; 3. Welding device; 4. Clamping structure; 41. Bearing platform; 42. Rotating shaft; 43. Cam; 44. Moving block; 45. Rectangular groove; 46. Rectangular block; 47. Handle; 48. Fixing block; 49. Connecting rod; 410. Spring; 5. Moving device; 51. Action groove; 52. Drive motor; 53. Threaded rod; 54. Threaded sleeve; 55. Connecting block; 56. Limiting block. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1 , Figure 2 , Figure 3 As shown, this embodiment proposes a battery positive electrode connecting piece welding fixture, including a support leg 1, a worktable 2 fixedly connected to the top of the support leg 1, a welding device 3 provided on the top of the worktable 2, and a clamping structure 4 provided on the top of the worktable 2.

[0030] The clamping structure 4 includes a support platform 41, which is set on the top of the workbench 2. A rotating shaft 42 is provided inside the support platform 41. A cam 43 is fixedly connected to the circumferential surface of the rotating shaft 42. A moving block 44 is provided on the inner wall of the support platform 41. A rectangular groove 45 is opened at the bottom of the support platform 41. A rectangular block 46 is slidably connected to the inner wall of the rectangular groove 45. A handle 47 is fixedly connected to the circumferential surface of the rotating shaft 42.

[0031] like Figure 2 As shown, in a preferred embodiment, based on the above method, a fixing block 48 is fixedly connected to the top of the moving block 44, a connecting rod 49 is fixedly connected to the side of the moving block 44, and one end of a spring 410 is fixedly connected to the circumferential surface of the connecting rod 49. The spring 410 is located away from the side of the moving block 44 of the connecting rod 49. The function of the spring 410 is to be able to reset the two moving blocks 44.

[0032] like Figure 3 As shown, in a preferred embodiment, based on the above method, there are two fixing blocks 48, which are symmetrical to each other along the vertical central axis of the support platform 41, and there are two connecting rods 49, which are symmetrical to each other along the vertical central axis of the support platform 41.

[0033] like Figure 4 , Figure 5As shown, in a preferred embodiment, based on the above method, a moving device 5 is further provided on the top of the workbench 2. The moving device 5 includes an action groove 51, which is opened on the top of the workbench 2. A drive motor 52 is provided on the side of the workbench 2. A threaded rod 53 is fixedly connected to the end of the output shaft of the drive motor 52. A threaded sleeve 54 is threadedly connected to the circumferential surface of the threaded rod 53. The function of the action groove 51 is to allow the threaded rod 53 to move on its inner wall, while allowing the limiting block 56 fixed on the circumferential surface of the threaded sleeve 54 to slide in the action groove 51.

[0034] like Figure 4 As shown, in a preferred embodiment, based on the above method, a connecting block 55 is fixedly connected to the circumferential surface of the threaded sleeve 54, and a limiting block 56 is fixedly connected to the circumferential surface of the threaded sleeve 54. The function of the limiting block 56 is to limit the movement path of the threaded sleeve 54 and prevent the limiting block 56 from moving away from the original movement path.

[0035] like Figure 5 As shown, in a preferred embodiment, based on the above method, the connecting block 55 is further fixedly connected to the bottom of the support platform 41, and there are two limiting blocks 56, which are symmetrical to each other along the vertical central axis of the function groove 51. The limiting blocks 56 are slidably connected to the inner wall of the function groove 51. The function of the connecting block 55 is to drive the support platform 41 fixed on the top of the connecting block 55 to move through the movement of the threaded sleeve 54.

[0036] like Figure 1 , Figure 2 , Figure 4 As shown, in a preferred embodiment, based on the above method, there are several support legs 1, which are symmetrical about each other along the vertical central axis of the worktable 2; there are two cams 43, which are symmetrical about each other along the vertical central axis of the support platform 41; there are two moving blocks 44, which are symmetrical about each other along the vertical central axis of the support platform 41; the rectangular groove 45 is located on the movement trajectory of the rectangular block 46; the rectangular block 46 is fixedly connected to the bottom of the moving block 44; the function of the cam 43 is to adjust the clamping range of the moving block 44 by the shape of the cam 43, thereby clamping the workpiece.

[0037] Specifically, when using this battery positive electrode connecting piece welding fixture: First, the operator needs to move the handle 47 to rotate the rotating shaft 42 fixed on the side of the handle 47, causing the cam 43 fixed on the circumferential surface of the rotating shaft 42 to rotate. When the cam 43 is in a horizontal state, the spring 410 is in a stretched state. At this time, the moving blocks 44 located on both sides of the cam 43 slide on the inner wall of the rectangular groove 45 through the rectangular block 46. At this time, the relative distance is relatively far, and the operator can place the workpiece in the middle of the fixed block 48. Then, the handle 47 is adjusted again so that the cam 43 is in a vertical state, so that the moving block 44 clamps the workpiece by displacement, preventing the workpiece from falling off during welding and causing resource damage. It also prevents the operator from being injured by falling workpieces, thus improving work efficiency.

[0038] After the workpiece is fixed, the operator can start the drive motor 52 by turning on the external power supply, so that the threaded rod 53 rotates. The threaded sleeve 54 moves linearly on the circumferential surface of the threaded rod 53 through the limit block 56. The connecting block 55 fixed on the circumferential surface of the threaded sleeve 54 can drive the support table 41 to continue to move. After the support table 41 is adjusted to a suitable position, the workpiece can be processed in subsequent steps, which improves work efficiency. The limit block 56 moves on the inner wall of the action groove 51 to prevent the support table 41 from getting stuck during movement.

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A battery positive electrode connector welding fixture, comprising a support leg (1), characterized in that, The top of the support leg (1) is fixedly connected to a workbench (2), the top of the workbench (2) is provided with a welding device (3), and the top of the workbench (2) is provided with a clamping structure (4). The clamping structure (4) includes a support platform (41), which is set on the top of the workbench (2). A rotating shaft (42) is provided inside the support platform (41). A cam (43) is fixedly connected to the circumferential surface of the rotating shaft (42). A moving block (44) is provided on the inner wall of the support platform (41). A rectangular groove (45) is opened at the bottom of the support platform (41). A rectangular block (46) is slidably connected to the inner wall of the rectangular groove (45). A handle (47) is fixedly connected to the circumferential surface of the rotating shaft (42).

2. The battery positive electrode connecting piece welding fixture according to claim 1, characterized in that, A fixed block (48) is fixedly connected to the top of the movable block (44), and a connecting rod (49) is fixedly connected to the side of the movable block (44). One end of a spring (410) is fixedly connected to the circumferential surface of the connecting rod (49), and the spring (410) is located away from the side of the movable block (44) from the connecting rod (49).

3. A battery positive electrode connecting piece welding fixture according to claim 2, characterized in that, There are two fixed blocks (48) and they are symmetrical to each other along the vertical central axis of the support platform (41). There are two connecting rods (49) and they are symmetrical to each other along the vertical central axis of the support platform (41).

4. The battery positive electrode connecting piece welding fixture according to claim 1, characterized in that, The top of the workbench (2) is provided with a moving device (5), the moving device (5) includes an action groove (51), the action groove (51) is opened on the top of the workbench (2), the side of the workbench (2) is provided with a drive motor (52), the output shaft end of the drive motor (52) is fixedly connected with a threaded rod (53), and the circumferential surface of the threaded rod (53) is threadedly connected with a threaded sleeve (54).

5. A battery positive electrode connecting piece welding fixture according to claim 4, characterized in that, A connecting block (55) is fixedly connected to the circumferential surface of the threaded sleeve (54), and a limiting block (56) is fixedly connected to the circumferential surface of the threaded sleeve (54).

6. A battery positive electrode connecting piece welding fixture according to claim 5, characterized in that, The connecting block (55) is fixedly connected to the bottom of the support platform (41). There are two limiting blocks (56), which are symmetrical to each other along the vertical central axis of the action groove (51). The limiting blocks (56) are slidably connected to the inner wall of the action groove (51).

7. A battery positive electrode connecting piece welding fixture according to claim 1, characterized in that, There are several support legs (1) and they are symmetrical to each other along the vertical central axis of the worktable (2). There are two cams (43) and they are symmetrical to each other along the vertical central axis of the support platform (41). There are two moving blocks (44) and they are symmetrical to each other along the vertical central axis of the support platform (41). The rectangular groove (45) is located on the movement trajectory of the rectangular block (46). The rectangular block (46) is fixedly connected to the bottom of the moving block (44).

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