Sodium-ion battery shell pressing test clamp

Abstract

The utility model discloses a sodium ion battery shell pressing test fixture, which relates to the technical field of battery testing, and is characterized in that the top of an inflatable base is fixedly connected with a support frame, the bottom of the inner wall of the support frame is fixedly connected with a fixed cylinder, the left side of the support frame is fixedly connected with an adjusting box, and the left side of the adjusting box is fixedly connected with an air cylinder. A sliding frame is slidably connected to the left side of the inner wall of the supporting frame, a telescopic cylinder is fixedly connected to the top of the inner wall of the sliding frame, a sealing cover is fixedly connected to the top of the sliding frame, a pressure relief pipe is fixedly connected to the left side of the inflation base, an adjusting mechanism is arranged in an adjusting box, and a pressure adjusting mechanism is arranged in the pressure relief pipe. The device has the advantages that sliding adjustment of the sealing cover and pressure adjustment of the pressing test are achieved, and the adjustability and the protection performance of the device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery testing, and more particularly to a sodium ion battery shell pressure testing fixture. Background Art

[0002] As demand for renewable energy storage and electric vehicles grows, sodium-ion batteries (SIBs) are attracting increasing attention as a promising energy storage technology. The safety of SIBs is paramount, and their casings, a key component protecting the battery's internal components, must possess excellent sealing and mechanical strength to prevent electrolyte leakage and damage from external factors. During the SIB production process, the quality of the casing directly impacts battery performance and safety. A pressure test fixture is a crucial tool for testing the sealing and compressive strength of battery casings.

[0003] Existing devices primarily use a pressurizing device to pressure-test the battery casing in a pressure test fixture. This prior art is similar to a cylindrical lithium-ion battery casing pressure test device. Patent number CN213842550U includes a pressure water tank, a syringe, and a gas tank. The inner wall of the pressure water tank is fixed with multiple clamps for securing the battery casing. Syringes for inflating the battery casing are located on the pressure water tank relative to each clamp, and each syringe is connected to a gas tank. This utility model can simultaneously test the airtightness and pressure-bearing capacity of multiple cylindrical battery cell casings, saving resources and time while improving efficiency. The testing method is simple and effective, but there are still areas for improvement.

[0004] Existing devices mainly use fixed clamps to seal and clamp the battery shell, making it difficult for some devices to adjust the height of the cover according to the length of the battery, which makes it inconvenient to perform pressure tests on battery shells of different length specifications. At the same time, some devices find it difficult to adjust the air pressure threshold of the pressure test according to the specifications of the battery shell, which causes some good battery shells to be damaged during the test, reducing the working efficiency and practicality of the device. Therefore, in order to solve the above technical problems, this application proposes a sodium ion battery shell pressure test fixture. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a sodium ion battery shell pressure test fixture.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an inflatable base, the top of the inflatable base is fixedly connected to a support frame, the bottom of the inner wall of the support frame is fixedly connected to a fixed cylinder, the left side of the support frame is fixedly connected to an adjustment box, the left side of the inner wall of the support frame is slidably connected to a sliding frame, the top of the inner wall of the sliding frame is fixedly connected to a telescopic cylinder, the inner wall of the telescopic cylinder is sleeved over the outer wall of the fixed cylinder, the top of the sliding frame is fixedly connected to a sealing cover, and the left side of the inflatable base is fixedly connected to a pressure relief pipe;

[0007] An adjusting mechanism is provided inside the adjusting box, and the adjusting mechanism includes an adjusting screw. Both ends of the adjusting screw are movably connected to the inner wall of the adjusting box. A pressure regulating mechanism is provided inside the pressure relief pipe, and the pressure regulating mechanism includes a movable plate. The outer wall of the movable plate is slidably connected to the left side of the inner wall of the pressure relief pipe.

[0008] Preferably, a second bevel gear is fixedly connected to the lower portion of the outer wall of the adjusting screw, a push nut is threadedly connected to the upper portion of the outer wall of the adjusting screw, and the right side of the outer wall of the push nut passes through the support frame and is fixedly connected to the middle portion of the left side of the sliding frame.

[0009] Preferably, the left side of the second bevel gear is meshed with the first bevel gear, the middle left side of the first bevel gear is fixedly connected to a rotating shaft, and the left end of the rotating shaft passes through the left side wall of the adjustment box and is fixedly connected to the first twist cover.

[0010] Preferably, a sealing gasket is fixedly connected to the bottom of the cover, and a sealing ring is fixedly connected to the bottom of the inner wall of the inflatable base.

[0011] Preferably, the right side of the movable plate is fixedly connected to a telescopic rod, the right end of the telescopic rod is fixedly connected to a piston, the right side of the movable plate is fixedly connected to the outer ring of the telescopic rod, and the right end of the spring is fixedly connected to the left side of the piston.

[0012] Preferably, a bolt is movably connected to the middle left side of the movable plate, the left end of the bolt passes through the left side wall of the pressure relief pipe and is fixedly connected to the second twist cover, the outer wall of the bolt is threadedly connected to a fixing nut, and the right side of the fixing nut is fixedly connected to the left side of the pressure relief pipe.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the utility model, through the structures such as the adjusting screw, the second bevel gear, the first bevel gear, the rotating shaft, the first twist cover, the push screw sleeve, the sealing gasket and the sealing ring in the adjustment mechanism, firstly, by rotating the first twist cover, the first twist cover drives the rotating shaft to limit rotation, the rotating shaft drives the first bevel gear to rotate synchronously, the first bevel gear engages and drives the second bevel gear to rotate, the second bevel gear drives the adjusting screw to limit rotation, the adjusting screw drives the push screw sleeve to slide up and down, the push screw sleeve drives the sliding frame, the sliding frame, the telescopic cylinder, the sealing cover and the sealing gasket to slide synchronously, thereby realizing the sliding adjustment of the sealing cover, so that some devices can adjust the height of the sealing cover according to the length of the battery, which is convenient for pressure testing of battery shells of different length specifications, and improves the adjustability and practicality of the device.

[0015] 2. In the utility model, through the movable plate, telescopic rod, piston, spring, bolt, second twist cover and fixed nut in the pressure regulating mechanism, the second twist cover drives the bolt to rotate in a limited position, and the bolt is restricted by the fixed nut, so that the bolt drives the movable plate to slide left and right, and the movable plate drives the telescopic rod, spring and piston to slide synchronously, thereby adjusting the distance from the piston to the pressure relief port and the length of the spring that needs to be compressed, thereby realizing the pressure regulation of the pressure test, so that some devices can adjust the air pressure threshold of the pressure test according to the specifications of the battery shell, effectively avoiding the damage of the battery shell of good products during the test, and improving the protection and practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 This is a frontal top perspective view of the structure of the present invention;

[0018] Figure 2 This is a front view sectional perspective diagram of the structure of the present utility model;

[0019] Figure 3 This is a front sectional perspective view of the partial structure of the fixing frame and the adjusting mechanism of the utility model;

[0020] Figure 4 It is a front sectional perspective view of the partial structure of the pressure relief cylinder and the pressure regulating mechanism of the present invention.

[0021] 11. Inflatable base; 12. Support frame; 13. Fixed cylinder; 14. Adjustment box; 15. Sliding frame; 16. Telescopic cylinder; 17. Sealing cover; 18. Pressure relief pipe; 2. Adjustment mechanism; 21. Adjusting screw; 22. Second bevel gear; 23. First bevel gear; 24. Rotating shaft; 25. First twist cover; 26. Push screw sleeve; 27. Sealing gasket; 28. Sealing ring; 3. Pressure regulating mechanism; 31. Movable plate; 32. Telescopic rod; 33. Piston; 34. Spring; 35. Bolt; 36. Second twist cover; 37. Fixing nut. DETAILED DESCRIPTION

[0022] like Figure 1-4 As shown, the utility model provides a sodium ion battery shell pressure test fixture, including an inflatable base 11, a support frame 12 is fixedly connected to the top of the inflatable base 11, a fixed cylinder 13 is fixedly connected to the bottom of the inner wall of the support frame 12, an adjustment box 14 is fixedly connected to the left side of the support frame 12, a sliding frame 15 is slidably connected to the left side of the inner wall of the support frame 12, a telescopic cylinder 16 is fixedly connected to the top of the inner wall of the sliding frame 15, the inner wall of the telescopic cylinder 16 is sleeved above the outer wall of the fixed cylinder 13, a sealing cover 17 is fixedly connected to the top of the sliding frame 15, and a pressure relief pipe 18 is fixedly connected to the left side of the inflatable base 11;

[0023] The interior of the adjusting box 14 is provided with an adjusting mechanism 2, which includes an adjusting screw 21. Both ends of the adjusting screw 21 are movably connected to the inner wall of the adjusting box 14. A second bevel gear 22 is fixedly connected to the lower portion of the outer wall of the adjusting screw 21. A push screw sleeve 26 is threadedly connected to the upper portion of the outer wall of the adjusting screw 21. The right side of the outer wall of the push screw sleeve 26 passes through the support frame 12 and is fixedly connected to the left middle portion of the sliding frame 15. Through this design, the second bevel gear 22 drives the adjusting screw 21 to rotate in a limited manner, so that the adjusting screw 21 drives the push screw sleeve 26, the sliding frame 15, the telescopic cylinder 16 and the cover 17 to slide up and down. The left side of the second bevel gear 22 is meshed with the first bevel gear 26. Gear 23, the middle part of the left side of the first bevel gear 23 is fixedly connected with a rotating shaft 24, the left end of the rotating shaft 24 passes through the left side wall of the regulating box 14 and is fixedly connected with a first twist cover 25. Through this design, the first twist cover 25 drives the rotating shaft 24 and the first bevel gear 23 to rotate in a limited position, so that the first bevel gear 23 engages and drives the second bevel gear 22 to rotate. The bottom of the cover 17 is fixedly connected with a sealing gasket 27, and the bottom of the inner wall of the inflatable base 11 is fixedly connected with a sealing ring 28. Through this design, the cover 17 drives the sealing gasket 27 to slide up and down, so that the sealing gasket 27 cooperates with the sealing ring 28 to seal the battery shell, which is convenient for inflation and pressurization testing inside the battery shell.

[0024] The pressure regulating mechanism 3 is provided inside the pressure relief pipe 18. The pressure regulating mechanism 3 includes a movable plate 31. The outer wall of the movable plate 31 is slidably connected to the left side of the inner wall of the pressure relief pipe 18. The right side of the movable plate 31 is fixedly connected to the telescopic rod 32. The right end of the telescopic rod 32 is fixedly connected to the piston 33. The right side of the movable plate 31 is located at the outer ring of the telescopic rod 32 and is fixedly connected to the spring 34. The right end of the spring 34 is fixedly connected to the left side of the piston 33. Through this design, the piston 33 is limited to slide relative to the movable plate 31, so that the piston 33 can be compressed by the spring 34. To open and close the pressure relief port above the pressure relief pipe 18, a bolt 35 is movably connected to the middle left side of the movable plate 31, and the left end of the bolt 35 passes through the left side wall of the pressure relief pipe 18 and is fixedly connected to the second twist cover 36. The outer wall of the bolt 35 is threadedly connected to a fixing nut 37, and the right side of the fixing nut 37 is fixedly connected to the left side of the pressure relief pipe 18. Through this design, the bolt 35 drives the movable plate 31 and the piston 33 to slide left and right, thereby adjusting the distance from the piston 33 to the pressure relief port above the pressure relief pipe 18, thereby controlling the predetermined air pressure value of the pressure test.

[0025] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any ordinary technician in this industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with this profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the scope of protection of the technical solution of the present invention.

Claims

1. A sodium ion battery shell pressure test fixture, comprising an inflatable base (11), characterized in that: The top of the inflatable base (11) is fixedly connected to a support frame (12), the bottom of the inner wall of the support frame (12) is fixedly connected to a fixed cylinder (13), the left side of the support frame (12) is fixedly connected to an adjustment box (14), the left side of the inner wall of the support frame (12) is slidably connected to a sliding frame (15), the top of the inner wall of the sliding frame (15) is fixedly connected to a telescopic cylinder (16), the inner wall of the telescopic cylinder (16) is sleeved above the outer wall of the fixed cylinder (13), the top of the sliding frame (15) is fixedly connected to a sealing cover (17), and the left side of the inflatable base (11) is fixedly connected to a pressure relief pipe (18); An adjusting mechanism (2) is provided inside the adjusting box (14), the adjusting mechanism (2) includes an adjusting screw (21), both ends of the adjusting screw (21) are movably connected to the inner wall of the adjusting box (14), and a pressure regulating mechanism (3) is provided inside the pressure relief pipe (18), the pressure regulating mechanism (3) includes a movable plate (31), and the outer wall of the movable plate (31) is slidably connected to the left side of the inner wall of the pressure relief pipe (18).

2. A sodium ion battery shell pressure test fixture according to claim 1, characterized in that: A second bevel gear (22) is fixedly connected to the lower portion of the outer wall of the adjusting screw (21), and a push screw sleeve (26) is threadedly connected to the upper portion of the outer wall of the adjusting screw (21). The right side of the outer wall of the push screw sleeve (26) passes through the support frame (12) and is fixedly connected to the middle portion of the left side of the sliding frame (15).

3. A sodium ion battery casing pressure test fixture according to claim 2, characterized in that: The left side of the second bevel gear (22) is meshedly connected to the first bevel gear (23), the middle portion of the left side of the first bevel gear (23) is fixedly connected to a rotating shaft (24), and the left end of the rotating shaft (24) passes through the left side wall of the adjustment box (14) and is fixedly connected to a first twist cover (25).

4. The sodium ion battery casing pressure test fixture according to claim 1, characterized in that: A sealing gasket (27) is fixedly connected to the bottom of the sealing cover (17), and a sealing ring (28) is fixedly connected to the bottom of the inner wall of the inflatable base (11).

5. The sodium ion battery casing pressure test fixture according to claim 1, characterized in that: The right side of the movable plate (31) is fixedly connected to a telescopic rod (32), the right end of the telescopic rod (32) is fixedly connected to a piston (33), the right side of the movable plate (31) is located on the outer ring of the telescopic rod (32) and is fixedly connected to a spring (34), the right end of the spring (34) is fixedly connected to the left side of the piston (33).

6. The sodium ion battery casing pressure test fixture according to claim 1, characterized in that: A bolt (35) is movably connected to the middle portion of the left side of the movable plate (31), the left end of the bolt (35) passes through the left side wall of the pressure relief pipe (18) and is fixedly connected to a second twist cover (36), the outer wall of the bolt (35) is threadedly connected to a fixing nut (37), and the right side of the fixing nut (37) is fixedly connected to the left side of the pressure relief pipe (18).

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