A new energy automobile battery airtightness nondestructive testing device

Abstract

The utility model relates to a new energy automobile battery airtightness nondestructive testing device relates to airtightness detection device technical field, solves the problem that a large amount of manual intervention is needed in the detection process in prior art, and the operation is complicated, and the problem of big labor intensity, including fixing frame, be connected with detection box in the fixing frame, the side that detection box is connected with the air pipe away from fixing frame, be connected with solenoid valve on the air pipe, the top of detection box is connected with pressure gauge, the lateral wall rotationally connected with the box door of detection box, be provided with the article table in the detection box, the push component is arranged in the article table bottom, the push component is connected with the lifting assembly between the article table, the two sides symmetry of detection box are connected with two groups of clamping components corresponding the article table, beneficial effect is: reduced the workload of manual handling, can detect the airtightness of different surfaces of battery package, improve the comprehensiveness of detection.

Description

Technical Field

[0001] This utility model relates to the technical field of airtightness testing devices, specifically to a non-destructive testing device for the airtightness of new energy vehicle batteries. Background Technology

[0002] With increasing global emphasis on environmental protection and sustainable development, the new energy vehicle market is developing rapidly. Electric vehicles, as an important component of new energy vehicles, are experiencing continuous growth in market demand. Batteries are one of the core technologies in the new energy vehicle field, and their performance directly affects the driving range, charging efficiency, and lifespan of new energy vehicles.

[0003] As a highly integrated energy storage unit, the battery pack needs to operate stably for a long time in complex and variable working environments. Its encapsulation integrity is crucial to prevent internal cells from getting damp and oxidized, and to avoid electrolyte leakage or the intrusion of harmful external substances. Therefore, the airtightness of the battery pack casing is a critical performance indicator in the manufacturing and quality inspection processes.

[0004] Currently, the industry mainly relies on traditional airtightness testing methods to test the airtightness of battery packs. This involves filling the chamber with clean gas at a certain pressure and monitoring the pressure decay or leakage flow over a period of time to determine if there is a leak. However, the testing equipment still requires a lot of manual intervention in the loading, unloading, and changing of the testing surface, which is cumbersome and labor-intensive.

[0005] Therefore, this utility model proposes a non-destructive testing device for the airtightness of new energy vehicle batteries to solve the above-mentioned problems. Utility Model Content

[0006] The purpose of this invention is to provide a non-destructive testing device for the airtightness of new energy vehicle batteries, which solves the problems of the existing technology that requires a lot of manual intervention, is cumbersome to operate, and has a high labor intensity.

[0007] The technical solution adopted by this utility model to solve its technical problem is: A non-destructive testing device for the airtightness of new energy vehicle batteries includes a fixed frame, a testing box connected inside the fixed frame, a worktable connected to one side of the fixed frame, and multiple air intake components evenly arranged on the worktable. Each air intake component includes a push-pull air valve, an air intake pipe, and an air receiving pipe. The air intake pipe and the air receiving pipe are respectively connected to the two ends of the push-pull air valve. The air receiving pipe is connected to an air pump connecting pipe, and the air intake pipe communicates with the side wall of the testing box. An air outlet pipe is connected to the side of the testing box away from the fixed frame, and a solenoid valve is connected to the air outlet pipe. A pressure gauge is connected to the top of the testing box. A door is rotatably connected to the side wall of the testing box, and a sealing strip is connected between the door and the testing box. A platform is provided inside the testing box, a pushing component is provided at the bottom of the platform, and a lifting component is connected between the platform and the pushing component. Two sets of clamping components are symmetrically connected inside the testing box corresponding to the two sides of the platform.

[0008] Furthermore, the lifting assembly includes a lifting frame and a sliding plate. The lifting frame is connected between the storage platform and the sliding plate. The lifting frame achieves lifting by rotating a first screw. The first screw is coaxially connected to the drive shaft of a first drive motor, and the first drive motor is connected to the sliding plate.

[0009] Furthermore, the pushing component includes a base plate, the sliding plate is slidably connected to the base plate, a second screw is rotatably connected to the base plate, the second screw is threadedly connected to the sliding plate, the second screw is coaxially connected to the drive shaft of the second drive motor, and the second drive motor is connected to the base plate.

[0010] Furthermore, the clamping assembly includes a clamping plate, a driving cylinder is connected between the clamping plate and the inner wall of the detection box, and an anti-slip layer is connected to the opposite side of the clamping plate.

[0011] Furthermore, the upper surface of the shelf is provided with a positioning groove, which is arranged in a stepped manner, and multiple through grooves are also evenly provided on the shelf.

[0012] Furthermore, one end of the air pump connecting pipe is used to connect to an air pump, and the other end of the air pump connecting pipe is connected to an air gun, which is snapped onto the fixed frame.

[0013] Furthermore, an air pressure regulating valve is connected to the end of the air pump connecting pipe away from the air gun.

[0014] Furthermore, the door is connected to a locking device for locking the door to the testing box, and the door is provided with an observation window.

[0015] In summary, compared with the prior art, the beneficial effects of this utility model are as follows: This invention can automatically move the platform into and out of the testing box using a pushing component and a lifting component, reducing the workload of manual handling. The lifting component adjusts the height of the battery pack inside the sealed testing box, and combined with the clamping component, it can perform airtightness testing on different surfaces of the battery pack without opening the box door, thus improving the comprehensiveness of the testing.

[0016] The testing box of this utility model is equipped with sealing strips and locking components, which can ensure the airtightness of the chamber during testing, which is a prerequisite for accurate airtightness testing; through the observation window, the operator can understand the status of the battery pack inside the box without opening the door.

[0017] The anti-slip layer on the clamping plate of this utility model can prevent damage to the battery pack shell during clamping; the stepped positioning groove can position new energy vehicle batteries of different sizes; and the air gun can remove impurities from the surface of the new energy vehicle battery. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the working state of this utility model; Figure 3 This is the front view of the present invention; Figure 4 This is a partial cross-sectional view of the main view of this utility model; Figure 5 This is a partial cross-sectional schematic diagram of the top view of this utility model; Figure 6 This is a partial cross-sectional view of the right side of this utility model; In the diagram: 1. Fixture; 2. Testing box; 3. Workbench; 4. Push-pull air valve; 5. Air inlet pipe; 6. Air connection pipe; 7. Air pump connection pipe; 8. Air outlet pipe; 9. Solenoid valve; 10. Pressure gauge; 11. Box door; 12. Sealing strip; 13. Storage platform; 14. Lifting frame; 15. Sliding plate; 16. First screw; 17. First drive motor; 18. Base plate; 19. Second screw; 20. Second drive motor; 21. Clamping plate; 22. Drive cylinder; 23. Anti-slip layer; 24. Positioning groove; 25. Through groove; 26. Air gun; 27. Air pressure regulating valve; 28. Locking component; 29. ​​Observation window. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] In this application, the terms "upper," "inner," "outer," "middle," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0021] like Figure 1-6 As shown, a non-destructive testing device for the airtightness of a new energy vehicle battery includes a fixed frame 1, a testing box 2 connected inside the fixed frame 1, and a workbench 3 connected to one side of the fixed frame 1. Multiple air intake components are evenly arranged on the workbench 3. Each air intake component includes a push-pull air valve 4, an air intake pipe 5, and an air inlet pipe 6. The air intake pipe 5 and the air inlet pipe 6 are respectively connected to the two ends of the push-pull air valve 4. The air inlet pipe 6 is connected to an air pump connecting pipe 7. The air intake pipe 5 communicates with the side wall of the testing box 2. One end of the air pump connecting pipe 7 is used to connect to an air pump, and the other end of the air pump connecting pipe 7 is connected to an air gun 26, which is snapped onto the fixed frame 1. An air pressure regulating valve 27 is connected to the end of the air pump connecting pipe 7 away from the air gun 26.

[0022] Furthermore, an air outlet pipe 8 is connected to the side of the test box 2 away from the fixed frame 1, and a solenoid valve 9 is connected to the air outlet pipe 8. A pressure gauge 10 is connected to the top of the test box 2. A door 11 is rotatably connected to the side wall of the test box 2, and a sealing strip 12 is connected between the door 11 and the test box 2. A locking element 28 for locking the door 11 to the test box 2 is connected to the door 11, and an observation window 29 is opened on the door 11.

[0023] Furthermore, the testing box 2 is equipped with a platform 13, and a pushing component is provided at the bottom of the platform 13. A lifting component is connected between the platform 13 and the pushing component. Two sets of clamping components are symmetrically connected to both sides of the platform 13 inside the testing box 2. The lifting component includes a lifting frame 14 and a sliding plate 15. The lifting frame 14 is connected between the platform 13 and the sliding plate 15. The lifting frame 14 achieves lifting by rotating a first screw 16. The first screw 16 is coaxially connected to the drive shaft of a first drive motor 17, and the first drive motor 17 is connected to the sliding plate 15. The pushing component includes a base plate 18. The sliding plate 15 is slidably connected to the base plate 18. A second screw 19 is rotatably connected to the base plate 18. The second screw 19 is threadedly connected to the sliding plate 15. The second screw 19 is coaxially connected to the drive shaft of a second drive motor 20, and the second drive motor 20 is connected to the base plate 18. The clamping assembly includes a clamping plate 21, and a driving cylinder 22 is connected between the clamping plate 21 and the inner wall of the detection box 2. An anti-slip layer 23 is connected to the opposite side of the clamping plate 21. A positioning groove 24 is provided on the upper surface of the platform 13. The positioning groove 24 is arranged in a stepped manner. A plurality of through grooves 25 are also evenly provided on the platform 13.

[0024] The working process of this utility model is as follows: First, the operator unlocks the door 11 of the testing box 2 using locking device 28. Then, the second drive motor 20 drives the second screw 19 to rotate, moving the entire sliding plate 15, lifting assembly, and platform 13 towards the door 11 of the testing box 2, thus moving the platform 13 outside the testing box 2. The new energy vehicle battery pack to be tested is then placed in the positioning groove 24 of the platform 13. The stepped positioning groove 24 can position new energy vehicle batteries of different sizes. The air gun 26 is then activated to blow air onto the surface of the new energy vehicle battery to remove impurities. Next, the second drive motor 20 drives the second screw 19 to rotate, moving the entire sliding plate 15, lifting assembly, and platform 13 in the opposite direction to the door 11 of the testing box 2, thus closing the door 11. The sealing strip 12 ensures the box is airtight and is then locked with locking device 28.

[0025] The required test pressure is then set via the pressure regulating valve 27, and the air pump is started. Clean gas flows sequentially through the air pump, air pump connecting pipe 7, push-pull air valve 4, and air inlet pipe 5 before being injected into the internal cavity of the test chamber 2. When the pressure gauge 10 shows that the pressure has reached the set value, the air source is turned off, the pressure holding begins, and the system starts timing. The pressure gauge 10 is a high-precision pressure sensor that can be connected to the PLC to automatically calculate the pressure difference and leakage rate.

[0026] During the pressure holding process, the first drive motor 17 drives the first screw 16, which in turn raises the platform 13 via the lifting frame 14, aligning the battery pack with the clamping plate 21. This then drives the cylinder 22, pushing the clamping plates 21 on both sides towards the center to clamp the battery pack. The anti-slip layer 23 prevents damage to the battery pack casing and ensures a stable clamping. Subsequently, the first drive motor 17 drives the first screw 16, which in turn lowers the platform 13 via the lifting frame 14, thus ensuring non-destructive testing of the airtightness of different surfaces of the battery pack.

[0027] After the pressure holding test is completed, the solenoid valve 9 on the vent pipe 8 is opened to safely discharge the compressed gas in the battery pack and pipeline to the recovery device. Then, the lifting components operate in the reverse sequence, resetting the platform 13 to its initial position, and the drive cylinder 22 of the clamping component retracts, releasing the battery pack.

[0028] The operator opens the door 11, and the pushing component moves the entire sliding plate 15, lifting component and storage platform 13 toward the door 11 of the testing box 2. Then the storage platform 13 moves outside the testing box 2, and the tested battery pack is removed from the storage platform 13, completing one testing cycle.

Claims

1. A non-destructive testing device for the airtightness of new energy vehicle batteries, comprising a fixing frame (1), characterized in that, The fixed frame (1) is connected to the test box (2), and a workbench (3) is connected to one side of the fixed frame (1). Multiple air intake components are evenly arranged on the workbench (3). The air intake components include a push-pull air valve (4), an air intake pipe (5), and an air inlet pipe (6). The air intake pipe (5) and the air inlet pipe (6) are respectively connected to the two ends of the push-pull air valve (4). The air inlet pipe (6) is connected to the air pump connecting pipe (7). The air intake pipe (5) is connected to the side wall of the test box (2). The test box (2) is connected to an air outlet pipe (8) on the side away from the fixed frame (1). A solenoid valve (9) is connected to the air outlet pipe (8). A pressure gauge (10) is connected to the top of the test box (2). A door (11) is rotatably connected to the side wall of the test box (2). A sealing strip (12) is connected between the door (11) and the test box (2). The detection box (2) is provided with a platform (13), and a pushing component is provided at the bottom of the platform (13). A lifting component is connected between the platform (13) and the pushing component. Two sets of clamping components are symmetrically connected to the two sides of the platform (13) inside the detection box (2).

2. The non-destructive testing device for the airtightness of new energy vehicle batteries according to claim 1, characterized in that, The lifting assembly includes a lifting frame (14) and a sliding plate (15). The lifting frame (14) is connected between the platform (13) and the sliding plate (15). The lifting frame (14) is lifted by rotating a first screw (16). The first screw (16) is coaxially connected to the drive shaft of a first drive motor (17). The first drive motor (17) is connected to the sliding plate (15).

3. The non-destructive testing device for the airtightness of new energy vehicle batteries according to claim 2, characterized in that, The pushing component includes a base plate (18), a sliding plate (15) is slidably connected to the base plate (18), a second screw (19) is rotatably connected to the base plate (18), the second screw (19) is threadedly connected to the sliding plate (15), the second screw (19) is coaxially connected to the drive shaft of the second drive motor (20), and the second drive motor (20) is connected to the base plate (18).

4. The non-destructive testing device for the airtightness of new energy vehicle batteries according to claim 1, characterized in that, The clamping assembly includes a clamping plate (21), a driving cylinder (22) is connected between the clamping plate (21) and the inner wall of the detection box (2), and an anti-slip layer (23) is connected to the opposite side of the clamping plate (21).

5. The non-destructive testing device for the airtightness of a new energy vehicle battery according to claim 1, characterized in that, The upper surface of the shelf (13) is provided with a positioning groove (24), which is arranged in a stepped manner. The shelf (13) is also provided with a plurality of through grooves (25).

6. The non-destructive testing device for the airtightness of new energy vehicle batteries according to claim 1, characterized in that, One end of the air pump connecting pipe (7) is used to connect to the air pump, and the other end of the air pump connecting pipe (7) is connected to the air gun (26), which is snapped onto the fixed frame (1).

7. The non-destructive testing device for the airtightness of a new energy vehicle battery according to claim 6, characterized in that, The end of the air pump connecting pipe (7) away from the air gun (26) is connected to an air pressure regulating valve (27).

8. The non-destructive testing device for the airtightness of new energy vehicle batteries according to claim 1, characterized in that, The door (11) is connected to a locking member (28) for locking the door (11) to the detection box (2), and the door (11) is provided with an observation window (29).

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