A lithium battery shell sealing performance detection device

Abstract

The utility model discloses a lithium cell shell sealing performance detection device. The utility model discloses a base, the base upper end fixedly connected with support frame, support frame upper end fixedly installed have telescopic pneumatic cylinder no.

Description

Technical Field

[0001] This utility model relates to the technical field of lithium battery accessory testing equipment, specifically a lithium battery casing sealing performance testing device. Background Technology

[0002] Lithium-ion batteries are a type of battery that uses lithium metal or lithium alloys as positive and negative electrode materials and a non-aqueous electrolyte solution. Due to the highly reactive chemical properties of lithium metal, its processing, storage, and use require very strict environmental control. With the development of science and technology, lithium-ion batteries have become mainstream. Lithium-ion batteries can be broadly classified into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable. Because lithium-ion batteries require an electrolyte solution inside, the battery casing must be absolutely sealed, and the casing undergoes a sealing test after leaving the factory. However, traditional lithium battery casing sealing performance testing equipment usually has only one testing station and can only test one set of lithium battery casings at a time, resulting in low work efficiency. Utility Model Content

[0003] The purpose of this invention is to provide a lithium battery casing sealing performance testing device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lithium battery casing sealing performance testing device, comprising: a base, a support frame fixedly connected to the upper end of the base, a telescopic cylinder 1 fixedly mounted on the upper end of the support frame, an output plate fixedly connected to the output end of the telescopic cylinder 1, an adjustment component 1 provided at the bottom of the mounting plate, and multiple sets of the adjustment component 1 are provided; an adjustment component 2 provided at the bottom of the adjustment component 1, and multiple sets of the adjustment component 2 are provided; multiple sets of workstation frames fixedly connected to the upper end of the base; an air pump fixedly mounted on the upper end of the support frame, a connecting pipe fixedly connected to the output end of the air pump, a dispersion pipe fixedly connected to the bottom end of the connecting pipe, multiple sets of air inlet pipes fixedly connected to the bottom end of the dispersion pipe, a gas flow monitor installed on the circumferential side of the air inlet pipe, a flexible tube fixedly connected to the bottom end of the air inlet pipe, and a connecting pipe fixedly connected to the bottom end of the flexible tube.

[0005] Furthermore, the adjustment assembly includes a base plate, a lead screw, a moving block, a threaded cylinder, a guide rod, and a second lead screw. The base plate is fixedly connected to the bottom surface of the mounting plate, and four sets of base plates are provided. The first lead screw is fixedly connected between two sets of base plates that are opposite each other. The first moving block is slidably connected to the side of the lead screw, and multiple sets of moving blocks are provided. The threaded cylinder is threadedly connected to the side of the lead screw, and multiple sets of threaded cylinders are provided. The threaded cylinder is located inside an adjacent first moving block, and its front and rear ends abut against the front and rear sides of the inner wall of the first moving block, respectively. The guide rod and the second lead screw are both fixedly connected between two sets of second-to-left opposite first moving blocks.

[0006] Furthermore, the second adjustment component includes a second slider and a positioning block. The second slider is slidably connected to the two circumferential sides of the adjacent guide rod and lead screw. The positioning block is threadedly connected to the two circumferential sides of the lead screw, and two sets of positioning blocks are provided. The connecting pipe is fixedly connected inside the second slider.

[0007] Furthermore, the second adjustment component also includes a slide rod, a pressure plate, a limiting piece, and a spring. The slide rod is slidably connected to the bottom of the second slider. There are two sets of slide rods. The pressure plate is fixedly connected to the bottom end of the slide rod. The limiting piece is fixedly connected to the upper end of the slide rod. The spring is sleeved on the circumferential side of the slide rod. The upper and lower ends of the spring abut against the second slider and the pressure plate, respectively.

[0008] Furthermore, four sets of limiting rods are fixedly connected to the upper end of the mounting plate, and the limiting rods are slidably connected to the support frame.

[0009] Furthermore, a side groove is provided on the left side of the inner wall of the workstation frame, and a side groove is provided on the front side of the inner wall of the workstation frame.

[0010] Furthermore, a push plate is slidably connected inside the side groove, and two sets of push rods are fixedly connected to the front of the push plate. A telescopic cylinder is fixedly installed on the left side of the workstation frame, and the output end of the telescopic cylinder is fixedly connected to the push plate.

[0011] Furthermore, a push plate 2 is slidably connected inside the side groove 2, a push rod 2 is fixedly connected to the left end of the push plate 2, and a telescopic cylinder 3 is fixedly installed on the front of the workstation frame, with the output end of the telescopic cylinder 3 fixedly connected to the push plate 2.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This invention allows for the adjustment of the position of each pair of connecting pipes via adjustment components one and two. The connecting pipes can be moved downwards by the downward movement of the mounting plate driven by the telescopic cylinder one. After the gas blown by the air pump is sent into the lithium battery casing through the connecting pipe, dispersion pipe, air inlet pipe, hose, and connecting pipe, the sealing performance of the lithium battery casing can be detected by observing and comparing the data of each gas flow monitoring instrument. This device can simultaneously test the sealing performance of multiple sets of lithium battery casings, resulting in high working efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the first adjustment component; Figure 3 for Figure 1 Schematic diagram of the structure of the second adjustment component; Figure 4 for Figure 1 A schematic diagram of the inner structure of the central workstation frame.

[0014] Reference numerals in the attached diagram: 1. Base; 2. Support frame; 3. Telescopic cylinder one; 4. Mounting plate; 5. Adjustment component one; 51. Base plate; 52. Lead screw one; 53. Moving block one; 54. Threaded cylinder; 55. Guide rod; 56. Lead screw two; 6. Adjustment component two; 61. Slider two; 62. Positioning block; 63. Slide rod; 64. Pressure plate; 65. Limiting plate; 66. Spring; 7. Workstation frame; 71. Side groove one; 72. Side groove two; 8. Air pump; 9. Connecting pipe; 10. Dispersion pipe; 11. Air inlet pipe; 12. Gas flow monitor; 13. Hose; 14. Connecting pipe; 15. Limiting rod; 16. Push plate one; 17. Push rod one; 18. Telescopic cylinder two; 19. Push plate two; 20. Push rod two; 21. Telescopic cylinder three. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please refer to the following: Figures 1-4 ,in Figure 1 This is a schematic diagram of the front view structure in one embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the structure of the first adjustment component; Figure 3 for Figure 1 Schematic diagram of the structure of the second adjustment component; Figure 4 for Figure 1 A schematic diagram of the inner structure of a workstation frame, illustrating a lithium battery casing sealing performance testing device, includes: a base 1, a support frame 2 fixedly connected to the upper end of the base 1, a telescopic cylinder 3 fixedly mounted on the upper end of the support frame 2, a mounting plate 4 fixedly connected to the output end of the telescopic cylinder 3, an adjustment component 5 with multiple sets of adjustment components 5 at the bottom of the mounting plate 4, an adjustment component 6 with multiple sets of adjustment components 6 at the bottom of the adjustment component 5, multiple workstation frames 7 fixedly connected to the upper end of the base 1, and an air pump 8 fixedly mounted on the upper end of the support frame 2, with the output end of the air pump 8 fixedly connected to... A connecting pipe 9 is connected to the bottom of the connecting pipe 9, and a dispersion pipe 10 is fixedly connected to the bottom of the dispersion pipe 10. Multiple sets of air inlet pipes 11 are fixedly connected to the bottom of the dispersion pipe 10. A gas flow monitor 12 is installed on the side of the air inlet pipe 11. A hose 13 is fixedly connected to the bottom of the air inlet pipe 11, and a connecting pipe 14 is fixedly connected to the bottom of the hose 13. The amount of gas entering the lithium battery casing can be detected by the gas flow monitor 12. The data detected by the gas flow monitor 12 for casings with poor sealing performance will be higher than the data detected by other casings, thus the lithium battery casing with poor sealing performance can be detected.

[0017] Adjustment component 5 includes a base plate 51, a lead screw 52, ​​a moving block 53, a threaded cylinder 54, a guide rod 55, and a lead screw 56. The base plate 51 is fixedly connected to the bottom surface of the mounting plate 4, and four sets of base plates 51 are provided. The lead screw 52 is fixedly connected between two sets of base plates 51 that are opposite each other. The moving block 53 is slidably connected to the circumferential side of the lead screw 52, ​​and multiple sets of moving blocks 53 are provided. The threaded cylinder 54 is threadedly connected to the circumferential side of the lead screw 52, ​​and multiple sets of threaded cylinder 54 are provided. The threaded cylinder 54 is located inside the adjacent moving block 53, and the front and rear ends of the threaded cylinder 54 abut against the front and rear sides of the inner wall of the moving block 53, respectively. The guide rod 55 and the lead screw 56 are both fixedly connected between two sets of moving blocks 53 that are opposite each other.

[0018] Adjustment component 2 6 includes slider 2 61 and positioning block 62. Slider 2 61 is slidably connected to the periphery of adjacent guide rod 55 and lead screw 2 56. Positioning block 62 is threadedly connected to the periphery of lead screw 2 56, and two sets of positioning blocks 62 are provided. Connecting tube 14 is fixedly connected inside slider 2 61.

[0019] Adjustment component 2 6 also includes a slide rod 63, a pressure plate 64, a limiting piece 65, and a spring 66. The slide rod 63 is slidably connected to the bottom of the slider 2 61. There are two sets of slide rods 63. The pressure plate 64 is fixedly connected to the bottom end of the slide rod 63. The limiting piece 65 is fixedly connected to the upper end of the slide rod 63. The spring 66 is sleeved on the circumferential side of the slide rod 63. The upper and lower ends of the spring 66 abut against the slider 2 61 and the pressure plate 64, respectively. The elastic force of the spring 66 can make the pressure plate 64 press against the lithium battery casing, thereby maintaining the stability of the lithium battery casing during testing.

[0020] Four sets of limiting rods 15 are fixedly connected to the upper end of the mounting plate 4, and the limiting rods 15 are slidably connected to the support frame 2.

[0021] A side groove 71 is provided on the left side of the inner wall of the workstation frame 7, and a side groove 72 is provided on the front side of the inner wall of the workstation frame 7.

[0022] A push plate 16 is slidably connected inside the side groove 71. Two sets of push rods 17 are fixedly connected to the front of the push plate 16. A telescopic cylinder 18 is fixedly installed on the left side of the workstation frame 7. The output end of the telescopic cylinder 18 is fixedly connected to the push plate 16.

[0023] Inside the side groove 2 72, there is a sliding connection to the push plate 2 19. The left end of the push plate 2 19 is fixedly connected to the push rod 2 20. The front of the work station frame 7 is fixedly installed with the telescopic cylinder 3 21. The output end of the telescopic cylinder 3 21 is fixedly connected to the push plate 2 19. The left end of the push rod 2 20 extends to the space between the two sets of push rods 1 17.

[0024] In summary, the lithium battery casing sealing performance testing device provided by this utility model allows for the adjustment of the position of the positioning block 62 on the circumferential side of the lead screw 56 by rotating the positioning block 62 during operation. Adjusting the position of the positioning block 62 allows for the adjustment of the position of the slider 61, enabling left and right adjustment of the connecting pipe 14. Rotating the threaded cylinder 54 allows it to move back and forth along the lead screw 52. Simultaneously, the adjacent moving block 53, guide rod 55, and lead screw 56 move synchronously, driving the slider 61 on the circumferential side of the guide rod 55 and lead screw 56 to move synchronously. This allows for the testing of the internal sealing performance of the slider 61. Adjust the connecting pipe 14 back and forth, place the lithium battery casing inside the work station frame 7, and align the connecting pipe 14 with the air inlet of the lithium battery casing. Then, move the mounting plate 4 downward by the telescopic cylinder 3 to connect the connecting pipe 14 with the air inlet of the lithium battery casing. At this time, the gas blown by the air pump 8 can be sent into the lithium battery casing through the connecting pipe 9, the dispersion pipe 10, the air inlet pipe 11, the hose 13 and the connecting pipe 14. At this time, by observing the data detected by the gas flow monitor 12, lithium battery casings with poor sealing performance can be picked out. Through this structure, multiple sets of lithium battery casings can be tested at one time, and the work efficiency is high. After the lithium battery casing is placed inside the workstation frame 7, the push plate 16, push rod 17, push plate 19, and push rod 20 can be driven by the telescopic cylinder 21 and telescopic cylinder 3 to press the lithium battery casing. During the pressing process of the lithium battery casing, the push rod 20 slides between the two sets of push rods 17. This structure can press and fix the lithium battery casing. This structure can fix lithium battery casings with smaller inner wall size than the workstation frame 7, thus making the equipment more widely applicable.

Claims

1. A lithium battery case sealing performance detection device, characterized by, include: A base (1) is fixedly connected to a support frame (2) at its upper end. A telescopic cylinder (3) is fixedly installed at the upper end of the support frame (2). An installation plate (4) is fixedly connected to the output end of the telescopic cylinder (3). An adjustment component (5) is provided at the bottom of the installation plate (4), and multiple sets of adjustment components (5) are provided. An adjustment component (6) is provided at the bottom of the adjustment component (5), and multiple sets of adjustment components (6) are provided. Multiple workstations are fixedly connected to the upper end of the base (1). The frame (7) has an air pump (8) fixedly installed on the upper end of the support frame (2). The output end of the air pump (8) is fixedly connected to a connecting pipe (9). The bottom end of the connecting pipe (9) is fixedly connected to a dispersing pipe (10). The bottom of the dispersing pipe (10) is fixedly connected to multiple sets of air inlet pipes (11). A gas flow monitor (12) is installed on the periphery of the air inlet pipe (11). The bottom end of the air inlet pipe (11) is fixedly connected to a hose (13). The bottom end of the hose (13) is fixedly connected to a connecting pipe (14).

2. The lithium battery case sealing performance detection device according to claim 1, wherein The adjustment assembly 1 (5) includes a base plate (51), a lead screw 1 (52), a moving block 1 (53), a threaded cylinder (54), a guide rod (55), and a lead screw 2 (56). The base plate (51) is fixedly connected to the bottom surface of the mounting plate (4), and the base plate (51) is provided with four sets. The lead screw 1 (52) is fixedly connected between two sets of base plates (51) that are opposite to each other. The moving block 1 (53) is slidably connected to the circumferential side of the lead screw 1 (52), and the moving block 1 (53) is provided with multiple sets. The threaded cylinder (54) is threadedly connected to the circumferential side of the lead screw 1 (52), and the threaded cylinder (54) is provided with multiple sets. The threaded cylinder (54) is located inside the adjacent moving block 1 (53), and the front and rear ends of the threaded cylinder (54) abut against the front and rear sides of the inner wall of the moving block 1 (53) respectively. The guide rod (55) and the lead screw 2 (56) are both fixedly connected between two sets of moving blocks 1 (53) that are opposite to each other.

3. The lithium battery case sealing performance detection device according to claim 2, characterized in that, The second adjustment component (6) includes a second slider (61) and a positioning block (62). The second slider (61) is slidably connected to the adjacent guide rod (55) and the second lead screw (56) on the circumferential side. The positioning block (62) is threadedly connected to the circumferential side of the second lead screw (56), and two sets of positioning blocks (62) are provided. The connecting pipe (14) is fixedly connected inside the second slider (61).

4. The lithium battery case sealing performance detection device according to claim 3, characterized in that, The second adjustment component (6) further includes a slide rod (63), a pressure plate (64), a limiting piece (65), and a spring (66). The slide rod (63) is slidably connected to the bottom of the second slider (61). The slide rod (63) is provided in two sets. The pressure plate (64) is fixedly connected to the bottom end of the slide rod (63). The limiting piece (65) is fixedly connected to the upper end of the slide rod (63). The spring (66) is sleeved on the circumferential side of the slide rod (63). The upper and lower ends of the spring (66) abut against the second slider (61) and the pressure plate (64) respectively.

5. The lithium battery case sealing performance detection device according to claim 4, characterized in that, The upper end of the mounting plate (4) is fixedly connected with four sets of limiting rods (15), and the limiting rods (15) are slidably connected to the support frame (2).

6. The lithium battery case sealing performance detection device according to claim 5, wherein The workstation frame (7) has a side groove 1 (71) on the left side of its inner wall and a side groove 2 (72) on the front side of its inner wall.

7. The lithium battery case sealing performance detection device according to claim 6, wherein The side groove (71) is slidably connected to a push plate (16), and two sets of push rods (17) are fixedly connected to the front of the push plate (16). The work station frame (7) is fixedly installed with a telescopic cylinder (18) on the left side, and the output end of the telescopic cylinder (18) is fixedly connected to the push plate (16).

8. The lithium battery case sealing performance detection device according to claim 7, characterized in that, The side groove 2 (72) is slidably connected to the push plate 2 (19), and the push rod 2 (20) is fixedly connected to the left end of the push plate 2 (19). The work station frame (7) is fixedly installed with the telescopic cylinder 3 (21), and the output end of the telescopic cylinder 3 (21) is fixedly connected to the push plate 2 (19).

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