Compatible airtightness detection tool

Abstract

The utility model discloses a compatible airtightness detection tool, which comprises a rack and a compatible rubber pad, a support plate is arranged on the rack, the compatible rubber pad is arranged on the top surface of the support plate, the compatible rubber pad comprises an installation rubber ring and an extension rubber ring, the extension rubber ring is arranged at one end of the installation rubber ring in the length direction, and the installation rubber ring is arranged on the support plate. The extending rubber ring comprises two length extending parts arranged in parallel and a width extending part arranged between one ends of the two length extending parts, the two length extending parts correspond to the two side edges of the mounting rubber ring in the length direction one to one and are collinear, and the ends, away from the width extending part, of the length extending parts are connected with the side edges of the corresponding mounting rubber ring; an inflation pipe is arranged on the supporting plate and located on the inner side of the installation rubber ring. The air tightness detection tool has the effect of expanding the application range of the air tightness detection tool.

Description

Technical Field

[0001] This application relates to the technical field of battery casing manufacturing, and in particular to a compatible airtightness testing fixture. Background Technology

[0002] To ensure the safety and lifespan of the battery, its airtightness must be tested before using and installing the battery casing.

[0003] Currently, the common method for airtightness testing involves inverting the battery casing with the opening on a testing table, sealing the opening. Gas is then injected into the cavity between the battery casing and the testing table, and the airtightness of the battery casing is determined by detecting changes in air pressure within the cavity. To ensure the accuracy of the airtightness test, the airtightness between the opening of the battery casing and the testing table must be guaranteed. This is typically achieved by installing a sealing ring on the testing table that matches the outer circumference of the opening.

[0004] Regarding the aforementioned technologies, the inventors believe that the length of battery casings varies depending on their capacity. During the inspection process, in order to ensure the accuracy of the inspection, it is necessary to select inspection worktables with sealing rings of different lengths according to the different capacities of the battery casings. Therefore, this not only occupies a larger workspace but also increases the inspection cost of the casings. Utility Model Content

[0005] In order to expand the application scope of air tightness testing fixtures, this application provides a compatible air tightness testing fixture.

[0006] The compatible airtightness testing fixture provided in this application adopts the following technical solution:

[0007] A compatible airtightness testing fixture includes a frame and a compatible rubber pad. A support plate is provided on the frame, and the compatible rubber pad is disposed on the top surface of the support plate. The compatible rubber pad includes a mounting rubber ring and an extension rubber ring. The extension rubber ring is disposed at one end of the mounting rubber ring along its length direction. The extension rubber ring includes two parallel length extensions and a width extension between one end of the two length extensions. The two length extensions correspond one-to-one with two sides of the mounting rubber ring along its length direction and are collinear. The end of the length extension away from the width extension is connected to the side corresponding to the mounting rubber ring. An inflation tube is provided on the support plate, and the inflation tube is located inside the mounting rubber ring.

[0008] By adopting the above technical solution, the compatible rubber pad enables simultaneous airtightness testing of battery casings of two different sizes. When testing the smaller battery casing, it is placed upside down on the mounting rubber ring. When testing the larger battery casing, it is placed upside down on the compatible rubber pad, with the edge of the battery casing abutting against three sides of the mounting rubber ring and the extended rubber ring. Gas is injected into the inner cavity of the battery casing through an inflation tube, and the airtightness of the battery casing is tested by detecting changes in air pressure. Through the cooperation of the frame and the compatible rubber pad, airtightness testing of two battery casing sizes can be performed, effectively expanding the applicability of the airtightness testing fixture.

[0009] Optionally, each edge of the support plate is provided with a plurality of pressing components. The pressing components include a pressing rotary cylinder, a rotating frame, a pressing rod, and a pressing rubber strip. The pressing rotary cylinder is located on the edge of the support plate. The rotating frame is rotatably mounted on the pressing rotary cylinder. The end of the rotating frame extends to the top of the support plate. The pressing rod is connected to the rotating frame and is arranged parallel to the corresponding side of the support plate. The pressing rubber strip is located on the bottom side of the pressing rod.

[0010] By adopting the above technical solution, after the battery casing is placed on the compatible sealing gasket, the rotary cylinder is pressed to start, driving the rotating frame to rotate. The pressing rod moves to the top of the battery casing, pressing the rubber strip to press against the top of the battery casing, thus fixing the battery casing and improving the tightness of the connection between the edge of the battery casing and the compatible rubber gasket, which helps to improve the accuracy of the test results.

[0011] Optionally, the rotating frame is provided with a connecting rod, and the connecting rod has a plurality of connecting holes along its length. The connecting rod is connected to a mounting rod, and the mounting rod has a plurality of alignment holes along its length. The plurality of alignment holes correspond one-to-one with the plurality of connecting holes. The mounting rod and the connecting rod are connected by bolts, and the bolts pass through the corresponding alignment holes and the connecting holes.

[0012] By adopting the above technical solution, the relative positions of the mounting rod and connecting rod are adjusted according to the size of the bottom end of different battery casings, ensuring that the corresponding alignment holes align with the connecting holes. Bolts are then passed through the corresponding alignment holes and connecting holes to connect the mounting rod and connecting rod together, at which point the position of the mounting rod corresponds to the edge of the top of the battery casing. The alignment holes and connecting holes expand the applicability of the device.

[0013] Optionally, a plurality of support baffles are vertically arranged on the support plate, and one side of the support baffle is arranged corresponding to the outer edge of the compatible rubber pad.

[0014] By adopting the above technical solution, the battery casing is placed upside down on the support plate, and the edge of the battery casing abuts against the corresponding support baffle. At this time, the battery casing corresponds to the position of the compatible rubber pad, thus realizing the rapid positioning of the casing.

[0015] Optionally, a support pad is provided on the side of the support baffle near the compatible rubber pad.

[0016] By adopting the above technical solution, the support pad is set on the side of the support baffle close to the compatible rubber pad, which protects the battery casing and reduces the possibility of damage to the battery casing during the positioning process.

[0017] Optionally, the top of the support pad is provided with a placement chamfer, which is located on the side of the support pad away from the support baffle.

[0018] By adopting the above technical solution, when placing the battery casing, a chamfer is placed to guide the battery casing, enabling the operator to place the casing in the appropriate position more quickly.

[0019] Optionally, a stabilizing component is provided at one end of the support plate near the extended rubber ring along its length. The stabilizing component includes a stabilizing rotary cylinder, a pressing frame, a first stabilizing rod, and a second stabilizing rod. The stabilizing rotary cylinder is disposed on the support plate, and the pressing frame is rotatably connected to the stabilizing rotary cylinder. The first stabilizing rod and the second stabilizing rod are arranged parallel to each other along the length of the pressing frame. When the pressing frame is rotated to a horizontal state, the first stabilizing rod is vertically aligned with the side of the rubber ring in the width direction, and the second stabilizing rod is vertically aligned with the width extension.

[0020] By adopting the above technical solution, when the stabilizing assembly is used to fix and clamp the battery casing, whether the battery casing is short or long, the first stabilizing rod and the second stabilizing rod can correspond to one end of their length direction and be pressed together, thereby improving the connection stability of the battery casing.

[0021] Optionally, an abutment cylinder is provided at the end of the support plate away from the stabilizing component. The output shaft of the abutment cylinder extends horizontally toward the compatible rubber pad. An abutment side plate is vertically connected to the output shaft of the abutment cylinder. An abutment rubber ring is provided on the side of the abutment side plate away from the abutment cylinder.

[0022] By adopting the above technical solution, for casings with slight differences in length, directly pressing one end of the casing length against one side of the support baffle will cause the edge of the casing to misalign with the position of the compatible rubber pad. In this case, the abutment cylinder is activated, pushing the battery casing to the appropriate position so that it aligns with the position of the compatible rubber pad.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. Through the cooperation of the frame and compatible rubber pads, it is possible to perform airtightness testing on battery casings of two different sizes, thus expanding the applicability of airtightness testing fixtures;

[0025] 2. The support baffle enables rapid positioning of the outer casing;

[0026] 3. The support pad is located on the side of the support baffle close to the compatible rubber pad to protect the battery casing and reduce the possibility of damage to the battery casing during positioning. Attached Figure Description

[0027] Figure 1 This is a schematic diagram illustrating the structure of a compatible airtightness testing fixture in an embodiment of this application.

[0028] Figure 2 This is a schematic diagram illustrating the structure of the compatible airtightness testing fixture on the fixed battery casing in the embodiments of this application.

[0029] Figure 3 yes Figure 2 Enlarged view of part A in the middle.

[0030] Figure 4 This is a schematic diagram illustrating the structure of the contact cylinder in the embodiments of this application.

[0031] Figure 5 yes Figure 4 Enlarged view of section B in the middle.

[0032] Figure 6 This is a partial exploded view used to illustrate the pressing component in the embodiments of this application.

[0033] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Pressing assembly; 21. Pressing rotary cylinder; 22. Rotating frame; 23. Connecting rod; 231. Connecting hole; 24. Mounting rod; 241. Alignment hole; 25. Pressing rod; 26. Pressing rubber strip; 3. Stabilizing assembly; 31. Stabilizing rotary cylinder; 32. Pressing frame; 33. First stabilizing rod; 34. Second stabilizing rod; 4. Compatible rubber pad; 41. Mounting rubber ring; 42. Extending rubber ring; 421. Length extension; 422. Width extension; 5. Support plate; 6. Inflation pipe; 7. Abutment cylinder; 8. Abutment side plate; 9. Abutment rubber ring; 10. Support baffle; 11. Connecting base plate; 12. Support pad; 121. Placement chamfer. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-6 This application will be further described in detail below. Embodiments of this application provide a compatible airtightness testing fixture, which has the effect of expanding the applicability of airtightness testing fixtures.

[0035] Reference Figure 1 A compatible airtightness testing fixture includes a frame 1, a pressing assembly 2, a stabilizing assembly 3, and a compatible rubber pad 4. A support plate 5 is horizontally mounted at the top of the frame 1. The compatible rubber pad 4 is mounted on the support plate 5 and includes a mounting rubber ring 41 and an extension rubber ring 42. The length direction of the mounting rubber ring 41 is parallel to the length direction of the support plate 5. The extension rubber ring 42 is located at one end of the mounting rubber ring 41 along its length direction and includes two parallel length extensions 421 and a width extension 422 vertically positioned between the ends of the two length extensions 421. The two length extensions 421 correspond one-to-one with the two sides of the mounting rubber ring 41 along its length direction and are collinearly connected. The width extension 422 is located at the end of the length extension 421 away from the mounting rubber ring 41. An inflation pipe 6 is mounted on the support plate 5, with its outlet facing upwards. The inflation pipe 6 is positioned inside the mounting rubber ring 41.

[0036] Reference Figure 2 and Figure 3 The pressing assembly 2 is provided with several sets on each side of the support plate 5. The pressing assembly 2 includes a pressing rotary cylinder 21, a rotating frame 22, a connecting rod 23, a mounting rod 24, a pressing rod 25, and a pressing rubber strip 26. The pressing rotary cylinder 21 is located at the edge of the support plate 5. The rotating frame 22 is driven and rotated at the output end of the pressing rotary cylinder 21. The connecting rod 23 is fixedly connected to the rotating frame 22. The connecting rod 23 extends upward toward the support plate 5, and the vertical rotation plane of the connecting rod 23 is perpendicular to the side of the support plate 5 closest to it.

[0037] Reference Figure 4-6One end of the mounting rod 24 is perpendicularly connected to the pressing rod 25. Several alignment holes 241 are formed along the length of the mounting rod 24. Several connecting holes 231 are equally spaced along the length of the connecting rod 23, with each connecting hole 231 corresponding to one of the alignment holes 241. A bolt passes through both one connecting hole 231 and one alignment hole 241, connecting the mounting rod 24 and the connecting rod 23 together. A pressing rubber strip 26 is attached to the side of the pressing rod 25 near the support plate 5. The arrangement of the connecting rod 23 and the alignment holes 241 facilitates the operator's adjustment of the relative positions of the mounting rod 24 and the connecting rod 23 according to the shape of the top of the battery casing, thus expanding the applicability of the device.

[0038] Reference Figure 1 and Figure 3 The support plate 5 has two sets of stabilizing components 3 at one end where the extended rubber ring 42 is located. Each stabilizing component 3 includes a stabilizing rotary cylinder 31, a pressing frame 32, a first stabilizing rod 33, and a second stabilizing rod 34. The stabilizing rotary cylinder 31 is mounted on the support plate 5, and the pressing frame 32 is rotatably connected to the output end of the stabilizing rotary cylinder 31. Both the first stabilizing rod 33 and the second stabilizing rod 34 are connected to the pressing frame 32 and are arranged parallel to each other. When the pressing frame 32 rotates to a horizontal position, the first stabilizing rod 33 corresponds vertically to one side of the rubber ring 41 in the width direction, and the second stabilizing rod 34 corresponds vertically to the width extension 422.

[0039] Reference Figure 5 A contact cylinder 7 is provided at the end of the support plate 5 away from the stabilizing component 3. The output shaft of the contact cylinder 7 extends horizontally along the length of the support plate 5. The output shaft of the contact cylinder 7 extends in the direction of the compatible rubber pad 4 and is connected to a contact side plate 8. The contact side plate 8 is vertically arranged, and a contact rubber ring 9 is provided on the side of the contact side plate 8 away from the contact cylinder 7. Several support baffles 10 are vertically arranged on the support plate 5. One side of the support baffle 10 is fitted with the outer edge of the compatible rubber pad 4. A connecting base plate 11 is vertically fixed to the bottom end of the support baffle 10 away from the compatible rubber pad 4. The connecting base plate 11 is connected to the top surface of the support plate 5 by bolts. A support pad 12 is provided on the side of the support baffle 10 near the compatible rubber pad 4. A chamfer 121 is provided on the top end of the support pad 12 away from the support baffle 10.

[0040] Reference Figure 1 , Figure 3 and Figure 6When performing an airtightness test on the battery casing, if a smaller casing needs to be tested, it is placed upside down on the support plate 5, with its outer edge aligned with the mounting sealing ring. Several pressing components 2 next to the support plate 5 are simultaneously activated. The pressing rotary cylinder 21 is activated, driving the rotating frame 22 to rotate. The pressing rod 25 presses against the top of the battery casing, clamping the battery casing to the mounting rubber ring 41, thus fixing the casing and improving the seal between the battery casing and the mounting rubber ring 41. A pressing rubber strip 26 is provided on the pressing rod 25, reducing the possibility of damage to the casing during the pressing process.

[0041] Reference Figure 1 and Figure 3 When placing the casing, the edge of the casing is pressed tightly against the side of the support baffle 10 closest to the compatible rubber pad 4. The support pad 12 reduces the possibility of damage when the edge of the casing comes into contact with the support baffle 10. The chamfer 121 guides the casing, making it easier to place in the corresponding position more quickly. After the casing is placed and secured, the air inlet pipe 6 injects air into the battery casing from below. The air pressure inside the casing is checked to determine whether the airtightness of the casing meets the standard.

[0042] Reference Figure 1 and Figure 3 When performing an airtightness test on a larger capacity battery casing, the battery casing is placed upside down on a compatible rubber pad 4, with the outer edge of the battery casing simultaneously abutting against the three edges of the mounting rubber ring 41 and the extension rubber ring 42. The larger capacity battery casing is then pressed tightly against the compatible rubber pad 4 using the pressing assembly 2. Air is then introduced through the inflation tube 6, thus achieving the airtightness test for the larger capacity battery casing. During the battery casing test, the stabilizing rotary cylinder 31 is activated, causing the pressing frame 32 to rotate under drive. The first stabilizing rod 33 and the second stabilizing rod 34, mounted on the pressing frame 32, move accordingly until they press against the top of the battery casing. When testing a smaller battery casing, the first stabilizing rod 33 abuts against the end of the battery casing; when testing a larger battery casing, the first stabilizing rod 33 abuts against the top surface of the battery casing, and the second stabilizing rod 34 abuts against the top end of the battery casing along its length. The stabilizing component 3 ensures that both large-capacity and small-capacity battery casings can be stably clamped onto the top surface of the support plate 5 during testing.

[0043] Reference Figure 5For battery casings with slight differences in length specifications, if one end along its length is positioned against the support baffle 10, the edge of the battery casing may not align with the mounting rubber ring 41 or the extension rubber ring 42. In this case, the abutment cylinder 7 is activated, and the abutment side plate 8 moves under the drive of the abutment cylinder 7, pushing the battery casing to the appropriate position so that its edge aligns with the compatible rubber pad 4. The abutment rubber ring 9 reduces the possibility of damage to the battery casing during fine-tuning.

[0044] The implementation principle of a compatible airtightness testing fixture in this embodiment is as follows: When testing the airtightness of a small battery casing, it is placed upside down on the support plate 5, with its outer edge aligned with the mounting sealing ring. Several pressing and rotating cylinders 21 are activated, driving the rotating frame 22 to rotate. The pressing rod 25 presses against the top of the battery casing, pressing the battery casing against the mounting rubber ring 41, thus fixing the casing. When placing the casing, the edge of the casing is pressed against the side of the support baffle 10 near the compatible rubber pad 4. After the casing is placed and fixed, the air inlet pipe 6 injects air into the battery casing from below. The air pressure inside the casing is measured to determine whether the airtightness of the casing meets the standard.

[0045] When testing larger capacity battery casings, the battery casing is placed upside down on the compatible rubber pad 4, with the outer edge of the battery casing simultaneously abutting against the three edges of the mounting rubber ring 41 and the extension rubber ring 42. The stabilizing component 3 ensures that both large and small capacity battery casings can be stably clamped onto the top surface of the support plate 5 during testing.

[0046] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A compatible air tightness detection tool, characterized in that: The device includes a frame (1) and a compatible rubber pad (4). A support plate (5) is provided on the frame (1). The compatible rubber pad (4) is provided on the top surface of the support plate (5). The compatible rubber pad (4) includes a mounting rubber ring (41) and an extension rubber ring (42). The extension rubber ring (42) is provided at one end of the mounting rubber ring (41) along its length. The extension rubber ring (42) includes two parallel length extensions (421) and a width extension (422) provided between one end of the two length extensions (421). The two length extensions (421) correspond one-to-one with the two sides of the mounting rubber ring (41) along its length and are collinear. The end of the length extension (421) away from the width extension (422) is connected to the side of the mounting rubber ring (41). An inflation tube (6) is provided on the support plate (5). The inflation tube (6) is located inside the mounting rubber ring (41).

2. The compatible air tightness detection tool according to claim 1, wherein: Each edge of the support plate (5) is provided with a plurality of pressing components (2). The pressing components (2) include a pressing rotary cylinder (21), a rotating frame (22), a pressing rod (25), and a pressing rubber strip (26). The pressing rotary cylinder (21) is located on the edge of the support plate (5). The rotating frame (22) is driven to rotate on the pressing rotary cylinder (21). The end of the rotating frame (22) extends to the top of the support plate (5). The pressing rod (25) is connected to the rotating frame (22). The pressing rod (25) is arranged parallel to the corresponding side of the support plate (5). The pressing rubber strip (26) is located on the bottom side of the pressing rod (25).

3. The compatible air tightness detection tool according to claim 2, wherein: The rotating frame (22) is provided with a connecting rod (23), and the connecting rod (23) has a plurality of connecting holes (231) along its length direction. The connecting rod (23) is connected to an mounting rod (24), and the mounting rod (24) has a plurality of alignment holes (241) along its length direction. The plurality of alignment holes (241) are provided in a one-to-one correspondence with the plurality of connecting holes (231). The mounting rod (24) and the connecting rod (23) are connected by bolts, and the bolts pass through the corresponding alignment holes (241) and the connecting holes (231).

4. The compatible airtightness testing fixture according to claim 1, characterized in that: A plurality of support baffles (10) are vertically arranged on the support plate (5), and one side of the support baffles (10) is arranged corresponding to the outer edge of the compatible rubber pad (4).

5. The compatible air tightness detection tool according to claim 4, wherein: The support baffle (10) is provided with a support pad (12) on the side near the compatible rubber pad (4).

6. The compatible air tightness detection tool according to claim 5, wherein: The top of the support pad (12) is provided with a placement chamfer (121), which is located on the side of the support pad (12) away from the support baffle (10).

7. The compatible air tightness detection tool according to claim 3, wherein: A stabilizing component (3) is provided at one end of the support plate (5) near the extended rubber ring (42) along its length direction. The stabilizing component (3) includes a stabilizing rotary cylinder (31), a pressing frame (32), a first stabilizing rod (33), and a second stabilizing rod (34). The stabilizing rotary cylinder (31) is disposed on the support plate (5). The pressing frame (32) is rotatably connected to the stabilizing rotary cylinder (31). The first stabilizing rod (33) and the second stabilizing rod (34) are arranged parallel to each other along the length direction of the pressing frame (32). When the pressing frame (32) rotates to a horizontal state, the first stabilizing rod (33) is vertically aligned with the side of the rubber ring (41) in the width direction, and the second stabilizing rod (34) is vertically aligned with the width extension (422).

8. The compatible air tightness detection tool according to claim 7, characterized in that: The support plate (5) is provided with an abutting cylinder (7) at one end away from the stabilizing component (3). The output shaft of the abutting cylinder (7) extends horizontally toward the compatible rubber pad (4). An abutting side plate (8) is vertically connected to the output shaft of the abutting cylinder (7). An abutting rubber ring (9) is provided on the side of the abutting side plate (8) away from the abutting cylinder (7).

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