Fixing device for air tightness detection of battery cell shell

Abstract

The utility model discloses a fixing device for air tightness detection of a battery cell shell, and relates to the technical field of battery cell shell application, the fixing device comprises an air tightness detection assembly, a support frame and a clamping and conveying assembly, the clamping and conveying assembly is used for clamping and fixing the battery cell shell and conveying the battery cell shell to a detection area of the air tightness detection assembly for air tightness detection, and the air tightness detection assembly is used for detecting the air tightness of the battery cell shell. The clamping and conveying assembly comprises a first clamping and conveying strip and a second clamping and conveying strip, and the first clamping and conveying strip and the second clamping and conveying strip are symmetrically distributed on the top of the supporting frame. According to the utility model, through the relative rotation of the clamping conveying strip I and the clamping conveying strip II, the cell shell can be stably clamped by utilizing the clamping arc groove, the cell shell is conveyed to the lower part of the air tightness detection assembly for detection under the cooperation of the conveying belt, and a plurality of groups of cell shells can be clamped and fixed at the same time, so that the detection efficiency is improved. The detection efficiency is effectively improved, meanwhile, automatic discharging can be achieved after detection is completed, the whole process is high in automation degree, manual intervention is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery cell housing application technology, specifically to a fixing device for detecting the airtightness of battery cell housing. Background Technology

[0002] In today's battery cell manufacturing industry, with the rapid development of new energy technologies, the requirements for battery cell quality and performance are becoming increasingly stringent. The airtightness of the battery cell casing is a key factor in ensuring the safety, stability, and lifespan of the battery cell, making its testing crucial.

[0003] Traditional methods for fixing battery cell casings for airtightness testing have many drawbacks. On the one hand, most traditional fixing devices have a relatively simple and fixed clamping structure, making it difficult to adapt to battery cell casings of different sizes. When faced with increasingly diverse battery cell products, factories often need to equip themselves with multiple different models of fixing devices. This not only increases equipment procurement costs but also occupies a large amount of production space, and the frequent replacement of devices severely reduces production efficiency.

[0004] On the other hand, traditional fixing devices lack effective coordination in the clamping and transporting of battery cells. Typically, the cells are manually placed in a specific position before being fixed, and then transferred to the testing area. This process is cumbersome and lacks continuity, making it prone to human error that could cause cell positioning deviations, thus affecting the accuracy and reliability of airtightness testing. Furthermore, some traditional devices have low levels of automation, unable to achieve continuous batch testing and automatic unloading, failing to meet the demands of modern large-scale, high-efficiency production. This has become a bottleneck restricting battery cell manufacturers from further improving product quality and production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a fixing device for detecting the airtightness of battery cell casings, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A fixing device for airtightness testing of battery cell casing includes an airtightness testing component, a support frame, and a clamping and conveying component. The clamping and conveying component is used to clamp and fix the battery cell casing and convey it to the testing area of ​​the airtightness testing component for airtightness testing.

[0008] The clamping and conveying assembly includes a clamping conveyor bar one and a clamping conveyor bar two. The clamping conveyor bar one and the clamping conveyor bar two are symmetrically distributed on the top of the support frame. A drive rod is rotatably connected to the inner wall of one end of the clamping conveyor bar two. A drive motor is fixedly connected to the bottom end of the drive rod. A linkage crossbar is meshed with the outer wall of the drive rod through a bevel gear. A conveyor belt is rotatably connected to the outer wall of the linkage crossbar.

[0009] One end of the clamping conveyor bar is rotatably connected to a conveyor belt drive disc. The bottom surface of the conveyor belt drive disc is provided with an adjustment component for adjusting the position of the clamping conveyor bar. The adjustment component changes the distance between the clamping conveyor bar and the second clamping conveyor bar by adjusting the lateral position of the clamping conveyor bar.

[0010] A further improvement of this utility model is that: the adjustment component includes a side frame and a bushing; one side of the side frame is fixedly connected to one side of the support frame; a bevel gear three is rotatably connected to the inner wall of the bushing; the top end of the bevel gear three is fixedly connected to the bottom end of the conveyor belt drive disc; a bevel gear one is fixedly connected to the outer wall of the linkage crossbar near one end; the bevel gear one meshes with the bevel gear three; a bevel gear two is fixedly connected to the outer wall of the linkage crossbar; and one end of the linkage crossbar is rotatably connected to the inner wall of the side frame.

[0011] A further improvement of this utility model is that: an adjusting hydraulic rod is fixedly connected to the outer wall of the bushing, a guide groove is provided on the top of the side frame, and the outer wall of the bushing is slidably connected to the inner wall of the guide groove.

[0012] A further improvement of the present invention is that: a clamping arc groove is provided on the outer wall of the clamping conveyor bar, and a rubber pad is fixedly connected to the inner wall of the clamping arc groove.

[0013] A further improvement of the present invention is that the airtightness detection component includes a docking detection head, which is located above the clamping and conveying component.

[0014] A further improvement of this utility model is that: a detection hydraulic rod is fixedly connected to the top of the docking detection head, the detection hydraulic rod is fixedly connected to one side of the support frame through an auxiliary positioning frame, and a positioning probe is fixedly connected to one side of the auxiliary positioning frame.

[0015] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0016] 1. This utility model provides a fixing device for testing the airtightness of battery cell housings. Through the relative rotational movement of clamping conveyor bar one and clamping conveyor bar two, the battery cell housings can be stably clamped using their clamping arc grooves. With the cooperation of the conveyor belt, the battery cell housings are transported to the airtightness testing component for testing. Multiple sets of battery cell housings can be clamped and fixed simultaneously, effectively improving the testing efficiency. At the same time, the material can be automatically unloaded after the testing is completed. The whole process has a high degree of automation, reduces manual intervention, and improves production efficiency.

[0017] 2. This utility model provides a fixing device for testing the airtightness of battery cell housings. The adjusting hydraulic rod in the adjusting assembly can push the bushing to move, thereby changing the distance between clamping conveyor bar one and clamping conveyor bar two. This can adapt to battery cell housings of different diameters, improving the versatility and flexibility of the device. Furthermore, during the adjustment of the spacing, the ingenious design of the bevel gear ensures that the clamping arc grooves of clamping conveyor bar one and clamping conveyor bar two always maintain a corresponding state, ensuring a stable clamping effect and facilitating accurate testing. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the clamping and conveying assembly structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the conveyor belt drive disc structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the left-side structure of this utility model.

[0022] In the diagram: 1. Air tightness testing component; 2. Support frame; 3. Clamping and conveying component; 4. Clamping conveyor bar one; 5. Clamping conveyor bar two; 6. Drive motor; 7. Drive rod; 8. Conveyor belt; 9. Bevel gear one; 10. Bevel gear two; 11. Conveyor belt drive disc; 12. Bevel gear three; 13. Side frame; 14. Guide chute; 15. Bushing; 16. Adjusting hydraulic rod; 17. Docking test head; 18. Test hydraulic rod; 19. Positioning probe; 20. Clamping arc groove; 21. Linkage crossbar. Detailed Implementation

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of 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.

[0024] The present invention will be further described in detail below with reference to embodiments:

[0025] Example 1

[0026] like Figure 1-4 As shown, this utility model provides a fixing device for testing the air tightness of a battery cell casing, including an air tightness testing component 1, a support frame 2, and a clamping and conveying component 3. The clamping and conveying component 3 is used to clamp and fix the battery cell casing and convey it to the testing area of ​​the air tightness testing component 1 for air tightness testing.

[0027] The clamping and conveying assembly 3 includes a clamping conveyor bar 4 and a clamping conveyor bar 5. The clamping conveyor bar 4 and the clamping conveyor bar 5 are symmetrically distributed on the top of the support frame 2. A drive rod 7 is rotatably connected to the inner wall of one end of the clamping conveyor bar 5. A drive motor 6 is fixedly connected to the bottom end of the drive rod 7. A linkage crossbar 21 is meshed with the outer wall of the drive rod 7 through a bevel gear. A conveyor belt 8 is rotatably connected to the outer wall of the linkage crossbar 21.

[0028] A conveyor belt drive disc 11 is rotatably connected to the inner wall of one end of the clamping conveyor bar 4. The bottom surface of the conveyor belt drive disc 11 is provided with an adjustment component for adjusting the position of the clamping conveyor bar 4. The adjustment component changes the distance between the clamping conveyor bar 4 and the clamping conveyor bar 5 by adjusting the lateral position of the clamping conveyor bar 4.

[0029] The adjustment assembly includes a side frame 13 and a bushing 15. One side of the side frame 13 is fixedly connected to one side of the support frame 2. A bevel gear 12 is rotatably connected to the inner wall of the bushing 15. The top of the bevel gear 12 is fixedly connected to the bottom of the conveyor belt drive disc 11. A bevel gear 9 is fixedly connected to the outer wall of the linkage crossbar 21 near one end. The bevel gear 9 meshes with the bevel gear 12. A bevel gear 10 is fixedly connected to the outer wall of the linkage crossbar 21. One end of the linkage crossbar 21 is rotatably connected to the inner wall of the side frame 13.

[0030] Example 2

[0031] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, an adjusting hydraulic rod 16 is fixedly connected to the outer wall of the bushing 15, and a guide groove 14 is provided on the top of the side frame 13, and the outer wall of the bushing 15 is slidably connected to the inner wall of the guide groove 14.

[0032] The outer wall of the clamping conveyor bar 4 is provided with a clamping arc groove 20, and a rubber pad is fixedly connected to the inner wall of the clamping arc groove 20.

[0033] The airtightness testing component 1 includes a docking testing head 17, which is located above the clamping and conveying component 3.

[0034] The top of the docking detection head 17 is fixedly connected to a detection hydraulic rod 18, which is fixedly connected to one side of the support frame 2 via an auxiliary positioning frame. A positioning probe 19 is fixedly connected to one side of the auxiliary positioning frame.

[0035] The working principle of the fixing device for testing the airtightness of the battery cell casing will be explained in detail below.

[0036] like Figure 1-4 As shown, in use, the battery cell housing to be tested is placed on the conveyor belt 8 with the inflation port facing upwards. Then, the drive motor 6 is started, causing the drive motor 6 to drive the clamping conveyor bar 5 to rotate via the drive rod 7. The drive rod 7, in turn, drives the conveyor belt 8, which in turn drives the bevel gear 12 via the bevel gear 9. The bevel gear 12 then drives the conveyor belt drive disc 11, which in turn drives the clamping conveyor bar 4 to rotate in the opposite direction to the clamping conveyor bar 5. During the rotation of the clamping conveyor bars 4 and 5, their corresponding clamping grooves 20 clamp the outer wall of the battery cell housing. While the battery cell housing is clamped, its bottom is conveyed by the conveyor belt 8, allowing it to be moved to the bottom of the docking detection head 17 while remaining perpendicular to the conveyor belt 8. Afterwards, the airtightness detection component 1 can be started for subsequent testing.

[0037] During the placement of the battery cell housings, the battery cell housings are first arranged equidistantly on the conveyor belt 8, corresponding to the clamping arc grooves 20 on the clamping conveyor bar 4 and the clamping conveyor bar 5. Then, the adjusting hydraulic rod 16 is activated, causing the adjusting hydraulic rod 16 to push the bushing 15, which in turn causes the bushing 15 to move the clamping conveyor bar 4 on the conveyor belt drive disc 11 closer to the clamping conveyor bar 5, thereby clamping the battery cell housings onto the inner wall of the clamping arc groove 20. Then, the drive motor 6 is activated to carry out the subsequent conveying work. Moreover, multiple sets of battery cell housings can be clamped and fixed at the same time, improving the testing efficiency.

[0038] Moreover, after the inspection is completed, as the clamping and conveying assembly 3 continues to operate, the battery cell housing can be gradually separated from the other end of the conveyor belt 8 to complete the unloading work.

[0039] When placing the battery cell housing onto the conveyor belt 8, as the clamping conveyor bar 1 4 is pulled away from the clamping conveyor bar 2 5 by the adjusting hydraulic rod 16, the bevel gear 3 12 meshes with the bevel gear 2 10. At this time, the drive motor 6 drives the drive rod 7, causing the clamping conveyor bar 2 5 to rotate. During this process, the clamping conveyor bar 1 4 can also move synchronously, thus ensuring that the clamping arc grooves 20 of both can always maintain a corresponding state. This ensures a stable clamping effect in the future.

[0040] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. A fixing device for testing the airtightness of a battery cell casing, comprising an airtightness testing assembly (1), a support frame (2), and a clamping and conveying assembly (3), characterized in that: The clamping and conveying assembly (3) is used to clamp and fix the battery cell housing and convey it to the airtightness detection assembly (1) detection area for airtightness detection; The clamping and conveying assembly (3) includes a clamping conveying bar one (4) and a clamping conveying bar two (5). The clamping conveying bar one (4) and the clamping conveying bar two (5) are symmetrically distributed on the top of the support frame (2). A drive rod (7) is rotatably connected to the inner wall of one end of the clamping conveying bar two (5). A drive motor (6) is fixedly connected to the bottom end of the drive rod (7). A linkage crossbar (21) is meshed with the outer wall of the drive rod (7) through a bevel gear. A conveyor belt (8) is rotatably connected to the outer wall of the linkage crossbar (21). One end of the clamping conveyor bar 1 (4) is rotatably connected to a conveyor belt drive disc (11). The bottom surface of the conveyor belt drive disc (11) is provided with an adjustment component for adjusting the position of the clamping conveyor bar 1 (4). The adjustment component is used to change the distance between the clamping conveyor bar 1 (4) and the clamping conveyor bar 2 (5) by adjusting the lateral position of the clamping conveyor bar 1 (4).

2. The fixing device for detecting the airtightness of a battery cell casing according to claim 1, characterized in that: The adjustment assembly includes a side frame (13) and a bushing (15). One side of the side frame (13) is fixedly connected to one side of the support frame (2). The inner wall of the bushing (15) is rotatably connected to a bevel gear three (12). The top end of the bevel gear three (12) is fixedly connected to the bottom end of the conveyor belt drive disc (11). The outer wall of the linkage crossbar (21) near one end is fixedly connected to a bevel gear one (9). The bevel gear one (9) meshes with the bevel gear three (12). The outer wall of the linkage crossbar (21) is fixedly connected to a bevel gear two (10). One end of the linkage crossbar (21) is rotatably connected to the inner wall of the side frame (13).

3. The fixing device for detecting the airtightness of a battery cell casing according to claim 2, characterized in that: An adjusting hydraulic rod (16) is fixedly connected to the outer wall of the bushing (15), and a guide groove (14) is provided on the top of the side frame (13). The outer wall of the bushing (15) is slidably connected to the inner wall of the guide groove (14).

4. The fixing device for detecting the airtightness of a battery cell casing according to claim 1, characterized in that: The outer wall of the clamping conveyor bar (4) is provided with a clamping arc groove (20), and a rubber pad is fixedly connected to the inner wall of the clamping arc groove (20).

5. The fixing device for detecting the airtightness of a battery cell casing according to claim 1, characterized in that: The airtightness testing component (1) includes a docking testing head (17), which is located above the clamping and conveying component (3).

6. The fixing device for detecting the airtightness of a battery cell casing according to claim 5, characterized in that: The top of the docking detection head (17) is fixedly connected to a detection hydraulic rod (18), which is fixedly connected to one side of the support frame (2) through an auxiliary positioning frame. A positioning probe (19) is fixedly connected to one side of the auxiliary positioning frame.

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