A sodium battery gas pressure tightness detection device

Abstract

The utility model discloses a sodium battery gas pressure leakproofness detection device relates to battery gas pressure leakproofness detection technical field, including work table and sodium battery ontology, the upper portion of work table is installed with support frame and placement platform, and the upper portion of placement platform is provided with sodium battery ontology, the upper portion of sodium battery ontology is installed with liquid injection port, the upper surface both sides of placement platform all are installed with threaded rod through bearing seat, and all are installed with clamping block on threaded rod, the upper portion of support frame is installed with vacuum pump, the lower portion of connecting box is installed with sealed connector, and the positive surface of connecting box is installed with connecting frame. This sodium battery gas pressure leakproofness detection device, through the gear and rack drive mechanism in connecting frame, cooperate small positive -negative motor drive mark and print block lift, can mark automatically when sodium battery ontology leakproofness detection unqualified, avoid the unqualified product mix into the qualified product, reduce the subsequent manpower cost of sorting and rework, guarantee product quality stability.

Description

Technical Field

[0001] This utility model relates to the field of battery pressure sealing test technology, specifically a sodium battery pressure sealing test device. Background Technology

[0002] Sodium batteries, as a novel energy storage device, have shown broad application prospects in large-scale energy storage, low-speed electric vehicles, and backup power supplies due to the advantages of abundant sodium resources, low cost, and excellent high and low temperature performance. Their core structure includes a positive electrode, a negative electrode, an electrolyte, and a sealed casing. The sealing performance of the casing directly affects the battery's safety and lifespan. If there are micro-cracks or leaks, moisture and oxygen from the air will seep into the battery and react with the electrolyte, leading to capacity decay. Simultaneously, if gas generated inside the battery leaks, its accumulation in a confined space may pose an explosion risk, especially in large-scale applications such as energy storage power stations, where the hazards of sealing failure are even more pronounced.

[0003] For example, Chinese utility model patent application number 202421097616.0 discloses a battery sealing performance testing device. This device involves placing a battery body on top of a support plate, with an injection hole on one side of the battery body. A connecting pipe is installed inside the injection hole, and a fixing pipe is installed at the other end of the connecting pipe. A vacuum pump is installed on top of the support plate, and the other end of the fixing pipe is mounted on the outer surface of the vacuum pump. A control valve and a pressure gauge are installed on the outer surface of the connecting pipe. The vacuum pump extracts air from inside the battery body. After closing the control valve, the operator observes the pressure gauge for a period of time. If the pressure gauge does not change after a period of time, the battery body has good sealing performance, making battery sealing performance testing more convenient. However, this device still has certain shortcomings. It is inconvenient to mark batteries that do not meet the sealing requirements, which can easily lead to defective products being mixed with qualified products, increasing the difficulty of subsequent sorting and rework, and seriously affecting the production efficiency and product quality of sodium batteries.

[0004] Therefore, we propose a sodium battery pressure sealing test device to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide a sodium battery pressure sealing test device to solve the problem mentioned in the background art that it is currently inconvenient to mark batteries with unqualified sealing, which easily leads to unqualified products being mixed with qualified products, increasing the difficulty of subsequent sorting and rework, and seriously affecting the production efficiency and product quality of sodium batteries.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sodium battery air pressure sealing test device, comprising a workbench and a sodium battery body, a support frame and a placement platform are installed above the workbench, and the sodium battery body is disposed above the placement platform. An injection port is installed above the sodium battery body. Threaded rods are installed on both the left and right sides of the upper surface of the placement platform through bearing seats, and clamping blocks are installed on the threaded rods. A vacuum pump is installed above the support frame, and a connecting box is installed below the support frame via an electric telescopic rod. A sealing connector is installed below the connecting box, and a connecting frame is installed on the front surface of the connecting box.

[0007] Preferably, the upper surface of the placement platform is equipped with an anti-slip mat, and the anti-slip mat is detachably connected to the placement platform.

[0008] With the above structural design, the anti-slip pad on the placement platform directly contacts the sodium battery body, increasing friction to prevent the sodium battery body from sliding during testing; the anti-slip pad is removable, making it easy to clean or replace, and ensuring stable anti-slip effect.

[0009] Preferably, the clamping block has a Z-shaped structure design, and a first guide rod is installed between the support frame and the placement platform. The first guide rod passes through the clamping block, and the clamping block is slidably connected to the first guide rod.

[0010] With the above structural design, the Z-shaped clamping block slides along the first guide rod under the drive of the threaded rod, clamping the sodium battery body from both sides. The first guide rod restricts the displacement direction of the clamping block, ensuring a smooth clamping process and preventing the sodium battery body from shifting and affecting the sealing connection.

[0011] Preferably, a vacuum tube is installed on the left side of the vacuum pump, and a pressure gauge is installed on the vacuum tube. The lower end of the vacuum tube is connected to the connecting box, and the sealing connector is located directly above the liquid injection port.

[0012] With the above structural design, the vacuum pump extracts gas from inside the sodium battery body through the vacuum tube, the pressure gauge displays the changes in internal pressure in real time, the sealing connector is aligned with the liquid injection port, and is connected to the vacuum tube through the connecting box to form a closed gas extraction channel. The sealing performance is judged by whether the gas pressure is stable.

[0013] Preferably, the sealing connector has a sealing sleeve inside, and the sealing connector is fitted onto the injection port.

[0014] With the above structural design, the sealing sleeve inside the sealing connector fits tightly when connected to the injection port, enhancing the airtightness of the connection and preventing air leakage during the pumping or pressure holding process, thus ensuring accurate air pressure test results.

[0015] Preferably, a drive shaft is installed inside the connecting frame via a bearing seat, a small forward and reverse motor is installed on the front surface of the connecting frame, and the rear side of the small forward and reverse motor is connected to the drive shaft via an output shaft.

[0016] With the above structural design, a small forward and reverse motor in the connecting frame drives the transmission shaft to rotate, which in turn drives the gear to rotate, providing power to the marking mechanism and realizing the lifting and lowering control of the marking block.

[0017] Preferably, a gear is mounted on the drive shaft, a rack is mounted on the left side of the gear, the rack and the gear mesh with each other, a fixing block is mounted on the upper left side of the rack, a second guide rod is mounted on the upper part of the connecting frame, the fixing block and the second guide rod are slidably connected, and a marking block is mounted on the lower end of the rack.

[0018] With the above structural design, the gear and rack mesh and drive each other. When the gear rotates, it drives the rack to move up and down. The fixed block slides along the second guide rod to ensure that the rack moves vertically. The marking block at the lower end of the rack descends when the sealing is not up to standard to mark the sodium battery body, which is convenient for subsequent sorting.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the sodium battery pressure sealing test device: 1. Automatic marking of defective products to improve sorting efficiency: Through the gear and rack transmission mechanism in the connecting frame, and with the small forward and reverse motor driving the marking block to rise and fall, the marking can be automatically marked when the sodium battery body fails the sealing test, preventing defective products from being mixed with qualified products, reducing the labor costs of subsequent sorting and rework, and ensuring product quality stability.

[0020] 2. Stable and accurate testing process, ensuring reliable testing: The Z-shaped clamp slides along the first guide rod to firmly clamp the sodium battery body. The sealing connector is tightly connected to the liquid injection port through the sealing sleeve. Combined with the vacuum pump and pressure gauge, a closed testing circuit is formed to ensure accurate pressure data, improve the reliability of sealing judgment, and provide effective protection for the safety performance of the sodium battery body. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall main structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom view of the present invention; Figure 3 This is a schematic diagram of the position and structure of the connecting frame of this utility model; Figure 4 This is a schematic diagram of the internal structure of the connecting frame of this utility model; Figure 5 This utility model Figure 4 Enlarged structural diagram at point A in the middle; Figure 6This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0022] In the diagram: 1. Workbench; 2. Support frame; 3. Placement platform; 4. Anti-slip mat; 5. Sodium battery body; 6. Injection port; 7. Threaded rod; 8. Clamping block; 9. First guide rod; 10. Vacuum pump; 11. Vacuum tube; 12. Pressure gauge; 13. Electric telescopic rod; 14. Connecting box; 15. Sealing connector; 16. Connecting frame; 17. Drive shaft; 18. Gear; 19. Small forward and reverse motor; 20. Rack; 21. Fixing block; 22. Second guide rod; 23. Marking block. Detailed Implementation

[0023] 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.

[0024] Example 1 Please see Figures 1-5 This utility model provides a technical solution: a sodium battery pressure sealing test device, comprising a workbench 1, a support frame 2, a placement platform 3, a sodium battery body 5, an injection port 6, a threaded rod 7, a clamping block 8, a first guide rod 9, a vacuum pump 10, a vacuum tube 11, a pressure gauge 12, an electric telescopic rod 13, a connecting box 14, a sealing connector 15, a connecting frame 16, a transmission shaft 17, a gear 18, a small forward and reverse motor 19, a rack 20, a fixing block 21, a second guide rod 22, and a marking block 23. The support frame 2 and the placement platform 3 are installed above the workbench 1, and the sodium battery is placed above the placement platform 3. The sodium battery body 5 has an injection port 6 installed on its top. Threaded rods 7 are installed on both sides of the upper surface of the placement platform 3 via bearing seats, and clamping blocks 8 are installed on each of the threaded rods 7. The clamping blocks 8 have a Z-shaped structure design. A first guide rod 9 is installed between the support frame 2 and the placement platform 3. The first guide rod 9 passes through the clamping blocks 8, and the clamping blocks 8 are slidably connected to the first guide rod 9. The Z-shaped clamping blocks 8 slide along the first guide rod 9 under the drive of the threaded rods 7, clamping the sodium battery body 5 from both sides. The first guide rod 9 restricts the displacement direction of the clamping blocks 8 to ensure a smooth clamping process and prevent the sodium battery body 5 from shifting and affecting the sealing connection.

[0025] A vacuum pump 10 is installed above the support frame 2, and a connecting box 14 is installed below the support frame 2 via an electric telescopic rod 13. A vacuum tube 11 is installed on the left side of the vacuum pump 10, and a pressure gauge 12 is installed on the vacuum tube 11. The lower end of the vacuum tube 11 is connected to the connecting box 14. A sealing connector 15 is located directly above the liquid injection port 6. The vacuum pump 10 extracts gas from the inside of the sodium battery body 5 through the vacuum tube 11. The pressure gauge 12 displays the internal pressure changes in real time. The sealing connector 15 is aligned with the liquid injection port 6, and the connection box 14 is connected to the vacuum pump 10. 4 is connected to the vacuum tube 11 to form a closed air extraction channel. The airtightness is judged by whether the air pressure is stable. A sealing connector 15 is installed at the bottom of the connecting box 14. The sealing connector 15 has a sealing sleeve inside. The sealing connector 15 is fitted onto the liquid injection port 6. The sealing sleeve inside the sealing connector 15 fits tightly when fitted onto the liquid injection port 6, enhancing the airtightness of the connection and preventing air leakage during air extraction or pressure holding, ensuring accurate air pressure test results. A connecting frame 16 is installed on the front surface of the connecting box 14. The inner part of the connecting frame 16... A drive shaft 17 is mounted on the part via a bearing housing. A small forward / reverse motor 19 is mounted on the front surface of the connecting frame 16. The rear side of the small forward / reverse motor 19 is connected to the drive shaft 17 via an output shaft. The small forward / reverse motor 19 inside the connecting frame 16 drives the drive shaft 17 to rotate, and the drive shaft 17 drives the gear 18 to rotate, providing power to the marking mechanism and realizing the lifting and lowering control of the marking block 23. A gear 18 is mounted on the drive shaft 17, and a rack 20 is mounted on the left side of the gear 18. The rack 20 and the gear 18 mesh with each other. A fixing block 21 is installed on the upper left side of the rack 20, and a second guide rod 22 is installed above the connecting frame 16. The fixing block 21 is slidably connected to the second guide rod 22. A marking block 23 is installed at the lower end of the rack 20. The gear 18 meshes with the rack 20 for transmission. When the gear 18 rotates, it drives the rack 20 to move up and down. The fixing block 21 slides along the second guide rod 22 to ensure that the rack 20 rises and falls vertically. The marking block 23 at the lower end of the rack 20 descends when the sealing is not up to standard to mark the sodium battery body 5 for subsequent sorting.

[0026] Example 2 Please see Figure 6 This utility model provides a technical solution: a sodium battery pressure sealing test device, including an anti-slip pad 4. The difference between this embodiment and embodiment one is: An anti-slip pad 4 is installed on the upper surface of the placement platform 3. The anti-slip pad 4 is detachably connected to the placement platform 3. The anti-slip pad 4 on the placement platform 3 directly contacts the sodium battery body 5, increasing friction to prevent the sodium battery body 5 from sliding during testing. The anti-slip pad 4 is detachable for easy cleaning or replacement, ensuring stable anti-slip effect.

[0027] It should be noted that the rack 20 in this application is limited by the second guide rod 22. In practical applications, a limiting guide structure can be added inside the connecting frame 16 according to the specific situation. For example, a slot can be made inside the connecting frame 16, and a slider can be set on the rack 20 to slide and connect with the slot. This part of the structure is simple, so it will not be described in detail.

[0028] Working principle: When using this sodium battery air pressure sealing test device, first, place the sodium battery body 5 on the placement platform 3 above the workbench 1, start the electric telescopic rod 13 on the support frame 2 to drive the connecting box 14 and the sealing connector 15 below to descend, so that the liquid injection port 6 on the sodium battery body 5 is aligned with the sealing connector 15. Rotate the threaded rods 7 on both sides of the placement platform 3 to drive the Z-shaped clamping block 8 to slide down along the first guide rod 9 to clamp the sodium battery body 5, ensuring that the position of the sodium battery body 5 is stable during the test.

[0029] The sealing connector 15 descends, allowing it to precisely fit onto the liquid injection port 6 of the sodium battery body 5. The internal sealing sleeve tightly fits the liquid injection port 6, ensuring the airtightness of the connection.

[0030] Turn on the vacuum pump 10 above the support frame 2 to extract the gas inside the sodium battery body 5 through the vacuum tube 11 and the connecting box 14. The pressure gauge 12 on the vacuum tube 11 monitors the internal pressure change in real time. After a period of time, if the pressure gauge 12 shows that the pressure is stable, it means that the sodium battery body 5 is well sealed; if the pressure drops, it is judged that the sealing is unqualified.

[0031] When a defect is detected, the small forward and reverse motor 19 on the connecting frame 16 starts, driving the transmission shaft 17 to rotate via the output shaft. The gear 18 on the transmission shaft 17 meshes with the rack 20, causing the rack 20 to move downwards along the second guide rod 22. The marking block 23 at the lower end of the rack 20 contacts the surface of the sodium battery body 5 and leaves a mark, facilitating subsequent sorting. After the inspection is completed, the components are reversed to reset, and the sodium battery body 5 can be removed, thus completing a series of operations. Content not described in detail in this specification is prior art known to those skilled in the art.

[0032] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A sodium battery pressure sealing test device, comprising a workbench (1) and a sodium battery body (5), wherein a support frame (2) and a placement platform (3) are mounted above the workbench (1), and the sodium battery body (5) is disposed above the placement platform (3), and an injection port (6) is mounted above the sodium battery body (5), characterized in that: The upper surface of the placement platform (3) is equipped with threaded rods (7) on both the left and right sides through bearing seats, and clamps (8) are installed on the threaded rods (7). A vacuum pump (10) is installed above the support frame (2), and a connecting box (14) is installed below the support frame (2) via an electric telescopic rod (13). A sealing connector (15) is installed below the connecting box (14), and a connecting frame (16) is installed on the front surface of the connecting box (14).

2. The sodium battery pressure sealing test device according to claim 1, characterized in that: The upper surface of the placement platform (3) is equipped with an anti-slip pad (4), which is detachably connected to the placement platform (3).

3. The sodium battery pressure sealing test device according to claim 1, characterized in that: The clamping block (8) has a Z-shaped structure design. A first guide rod (9) is installed between the support frame (2) and the placement platform (3). The first guide rod (9) passes through the clamping block (8), and the clamping block (8) is slidably connected to the first guide rod (9).

4. The sodium battery pressure sealing test device according to claim 1, characterized in that: A vacuum tube (11) is installed on the left side of the vacuum pump (10), and a pressure gauge (12) is installed on the vacuum tube (11). The lower end of the vacuum tube (11) is connected to the connecting box (14), and the sealing connector (15) is located directly above the liquid injection port (6).

5. The sodium battery pressure sealing test device according to claim 4, characterized in that: The sealing connector (15) is provided with a sealing sleeve inside, and the sealing connector (15) is fitted onto the injection port (6).

6. The sodium battery pressure sealing test device according to claim 1, characterized in that: The drive shaft (17) is installed inside the connecting frame (16) through a bearing seat. A small forward and reverse motor (19) is installed on the front surface of the connecting frame (16). The rear side of the small forward and reverse motor (19) is connected to the drive shaft (17) through an output shaft.

7. The sodium battery pressure sealing test device according to claim 6, characterized in that: A gear (18) is installed on the drive shaft (17). A rack (20) is installed on the left side of the gear (18). The rack (20) meshes with the gear (18). A fixing block (21) is installed on the upper left side of the rack (20). A second guide rod (22) is installed above the connecting frame (16). The fixing block (21) and the second guide rod (22) are slidably connected. A marking block (23) is installed at the lower end of the rack (20).

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