Automobile battery cover plate air tightness detection device

Abstract

The invention discloses an automobile battery cover plate airtightness detection device which comprises a base, a moving mechanism installed at the top of the base, an auxiliary mechanism installed at the top of the moving mechanism, supporting plates installed on the two sides of the moving mechanism on the base, a cover plate installed at the tops of the supporting plates, and a pressing mechanism installed on the cover plate. The power output end of the pressing mechanism is connected with a detection plate, an air hole is formed in the detection plate, the top of the air hole is connected with an air pipe, the input end of the air pipe is connected with an air pump, and the air pump is installed at the top of the cover plate; guide rods are mounted at the tops of the base plates, supporting sleeves are slidably mounted at the tops of the guide rods, the tops of the supporting sleeves penetrate through the base and extend to the outer side of the base, limiting plates are arranged on the outer sides of the bottoms of the supporting sleeves, springs are mounted at the bottoms of the limiting plates, and the free ends of the springs are mounted on the base plates.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of automobile battery cover plate air tightness detection, and particularly relates to an automobile battery cover plate air tightness detection device. BACKGROUND

[0002] The automobile battery cover plate is a key protection component in the power battery system, mainly bearing the functions of sealing protection, safety pressure relief, current conduction and the like. As a key sealing component of the power battery, the battery cover plate needs to pass strict air tightness detection to ensure no gas leakage and prevent impurities such as moisture and dust from entering the battery to cause safety hazards such as short circuit and fire.

[0003] After the production of the battery cover plate is completed, the air tightness of the battery cover plate often needs to be detected by using an air tightness detection device to ensure the sealing performance of the automobile battery pack. By filling compressed air into the inside of the battery cover plate and monitoring the pressure change, it is determined whether there is leakage. The air tightness detection directly relates to whether the battery cover plate pack can effectively isolate pollutants such as moisture and dust, so as to ensure the safety and service life of the battery. In the existing air tightness detection, a rigid pressing combination method is used for detection. However, due to the difference in the flatness of the surface of the battery cover plate, gaps are easily generated during the rigid pressing combination, resulting in inaccurate detection, the need for manual adjustment, the waste of time and effort, the influence on the production progress, and the existence of large positioning errors, which further affect the detection efficiency. Therefore, an automobile battery cover plate air tightness detection device is urgently needed to solve the above problems. SUMMARY

[0004] In view of the problems in the above background art, the purpose of the present application is to provide an automobile battery cover plate air tightness detection device.

[0005] To achieve the above technical purpose, the technical scheme adopted by the present application is as follows: An automobile battery cover plate air tightness detection device, comprising a base, a moving mechanism is installed on the top of the base, an auxiliary mechanism is installed on the top of the moving mechanism, support plates are installed on the two sides of the moving mechanism of the base, a cover plate is installed on the top of the support plates, a pressing mechanism is installed on the cover plate, a detection plate is connected to the power output end of the pressing mechanism, an air hole is arranged on the detection plate, an air pipe is connected to the top of the air hole, a gas pump is connected to the input end of the air pipe, and the gas pump is installed on the top of the cover plate. The auxiliary mechanism comprises a base mounted on the power output end of the moving mechanism, a cavity is arranged in the base, a plurality of pad plates are mounted in the cavity, a guide rod is mounted on the top of the plurality of pad plates, a support sleeve is slidingly mounted on the top of the guide rod, the top of the support sleeve penetrates through the base and extends to the outside of the base, a limiting plate is arranged on the bottom outside of the support sleeve, a spring is mounted on the bottom of the limiting plate, and the free end of the spring is mounted on the pad plate.

[0006] Further limitation, the support sleeve and the limiting plate are designed in an integral molding structure, the support sleeve is provided with a guide groove matched with the guide rod, and the guide rod is slidingly arranged in the guide groove. Such a structure design is convenient for molding and manufacturing, and is convenient for guiding the sliding of the support sleeve.

[0007] Further limitation, a silica gel head is arranged on the top of the support sleeve, and the silica gel head is arranged in a semicircular structure. Such a structure design reduces the damage caused by extrusion through the silica gel head, increases the friction, and reduces the sliding phenomenon.

[0008] Further limitation, the base is provided with a fixed plate on both sides of the moving mechanism, and a limiting pressing block is arranged on the top of the fixed plate. Such a structure design is convenient for pressing and fixing the base.

[0009] Further limitation, a driving assembly is mounted on the support plate, a movable plate is connected to the power output end of the driving assembly, a flexible pad is arranged on one side of the movable plate, guide sliding rods are mounted on both ends of the other side of the movable plate, and the guide sliding rods are slidingly arranged on the support plate. Such a structure design can drive the movable plate to move, and is convenient for clamping and fixing the automobile battery cover plate.

[0010] Further limitation, the driving assembly comprises a screw rod, a threaded sleeve is connected to the outside of the screw rod, the threaded sleeve is mounted on the support plate, a rotating wheel is mounted on the outside of the screw rod, a rotating plate is mounted on the inside of the screw rod, the rotating plate is rotationally arranged in the movable plate, a bearing is mounted on the outside of the screw rod, and the bearing is fixedly mounted on one side of the movable plate. Such a structure design drives the movable plate to move through the threaded rotation mode, is convenient for manually controlling the extrusion force, and prevents the damage caused by excessive extrusion force.

[0011] Further limitation, a double-layer elastic sealing pad is mounted on the bottom outside of the detection plate, a gas pressure sensor is mounted on one side of the bottom of the detection plate, the gas pressure sensor is connected to a display, and the display is mounted on the bottom of the cover plate. Such a structure design can achieve good sealing effect when the detection plate contacts the automobile battery cover plate, and the gas pressure sensor can send the detected signal to the display when the air tightness is detected, so as to be convenient for the operator to check.

[0012] Furthermore, an electromagnetic control valve is installed inside the air vent, and a flow sensor is connected to the output end of the air pipe. This structural design allows for the control of the outgoing air and the detection of the flow rate.

[0013] Furthermore, a porous buffer plate is installed at the output end of the air vent. This structural design can mitigate the pressure surge of compressed air.

[0014] Furthermore, the trachea is a corrugated flexible tube. This structural design allows the corrugated flexible tube to effectively expand and contract axially, laterally, and angularly during tracheal displacement, shortening or lengthening to a certain extent and improving usability. The beneficial effects of this invention are as follows: 1. This invention, by setting up an auxiliary mechanism, utilizes a spring elastic support and a support sleeve. When the detection plate is pressed, the spring rebound force drives the support sleeve to automatically conform to the shape of the battery cover, effectively compensating for differences in the flatness of the cover surface and avoiding sealing gaps caused by rigid pressing. This fundamentally solves the problems of air leakage and distorted results. At the same time, the double-layer elastic sealing gasket at the bottom of the detection plate, combined with the automatic correction function of the support sleeve, further improves the sealing fit, ensures the accuracy of airtightness testing, and reduces positioning errors.

[0015] 2. This invention achieves smooth and precise movement of the auxiliary mechanism by setting up a moving mechanism, which greatly reduces the error of traditional positioning methods, ensures that the battery cover and the detection plate are coaxially aligned, avoids uneven fitting that affects detection efficiency, and achieves automatic lifting and lowering of the detection plate by setting up a pressing mechanism, and the moving mechanism automatically delivers the cover plate, which significantly improves detection efficiency without the need for manual adjustment of the pressing force or calibration of the position. Attached Figure Description

[0016] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings; Figure 1 This is a schematic diagram of the axonal structure of an airtightness testing device for an automotive battery cover according to an embodiment of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of an airtightness testing device for an automotive battery cover according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the drive assembly structure of an automotive battery cover airtightness testing device according to an embodiment of the present invention; Figure 4 This is a cross-sectional schematic diagram of the auxiliary mechanism of an automotive battery cover airtightness testing device according to an embodiment of the present invention; The symbols for the main components are explained below: 1. Base; 2. Moving mechanism; 3. Auxiliary mechanism; 4. Support plate; 5. Cover plate; 6. Pressing mechanism; 7. Detection plate; 8. Air hole; 9. Air pipe; 10. Air pump; 11. Base; 12. Cavity; 13. Pad; 14. Guide rod; 15. Support sleeve; 16. Limiting plate; 17. Spring; 18. Guide groove; 19. Silicone head; 20. Fixing plate; 21. Limiting pressure block; 22. Drive assembly; 23. Movable plate; 24. Flexible pad; 25. Guide slide rod; 26. Screw; 27. Threaded sleeve; 28. Rotating wheel; 29. ​​Rotating plate; 30. Bearing; Double layer 31. Elastic sealing gasket, 32. Air pressure sensor, 33. Display, 34. Electromagnetic control valve, 35. Flow sensor, 36. Perforated buffer plate, 37. Servo motor, 38. Lead screw, 39. Shaft side seat, 40. Fixed seat, 41. Nut, 42. Nut moving seat, 43. Moving plate, 44. Slide seat, 45. Slide rail, 46. Support seat, 47. Handle, 48. Assembly seat, 49. Lifting column, 50. Guide rail, 51. Guide seat, 52. Rack seat, 53. Drive motor, 54. Drive gear, 55. Locking plate, 56. Protective shell. Detailed Implementation

[0017] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Example 1, as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an airtightness testing device for an automotive battery cover is provided. A moving mechanism 2 is installed on the top of a base 1, and an auxiliary mechanism 3 is installed on the top of the moving mechanism 2. Support plates 4 are installed on both sides of the base 1 and the top of the support plates 4 are installed on the cover 5. A pressing mechanism 6 is installed on the cover 5. The power output end of the pressing mechanism 6 is connected to a testing plate 7. The testing plate 7 is provided with air holes 8. An air pipe 9 is connected to the top of the air holes 8. An air pump 10 is connected to the input end of the air pipe 9. The air pump 10 is installed on the top of the cover 5. The auxiliary mechanism 3 includes a base 11 installed on the power output end of the moving mechanism 2. The base 11 has a cavity 12, and a plurality of pads 13 are installed in the cavity 12. A guide rod 14 is installed on the top of the plurality of pads 13. A support sleeve 15 is slidably installed on the top of the guide rod 14. The top of the support sleeve 15 passes through the base 11 and extends to its outer side. A limiting plate 16 is provided on the outer side of the bottom of the support sleeve 15. A spring 17 is installed on the bottom of the limiting plate 16. The free end of the spring 17 is installed on the pad 13.

[0019] In this embodiment, during use, the battery cover plate with the side-sealed holes is first placed on the auxiliary mechanism 3 with the opening of the battery cover plate facing upwards. The auxiliary mechanism 3 is driven by the moving mechanism 2, and the auxiliary mechanism 3 moves the battery cover plate to the lower side of the detection plate 7. Then, the pressing mechanism 6 is activated, and the pressing mechanism 6 moves the detection plate 7 downwards until the detection plate 7 contacts the opening of the battery cover plate and squeezes the battery cover plate. After the detection plate 7 contacts the battery cover plate, the air pump 10 is activated. The compressed gas generated by the air pump 10 is transported through the air pipe 9 and output from the air hole 8 on the detection plate 7 into the battery cover plate for air tightness testing.

[0020] In this process, the pressing mechanism 6 moves the detection plate 7 downward. After the detection plate 7 contacts the battery cover, it pushes the battery cover downward synchronously. The downward movement of the battery cover pushes several support sleeves 15, causing the support sleeves 15 to slide along the base 11 and the guide rod 14. Simultaneously, it moves the limiting plate 16 downward. During the downward movement of the limiting plate 16, it compresses the spring 17, causing the spring 17 to be compressed and deformed, generating a rebound force. The rebound force acts on the support sleeves 15, allowing the support sleeves 15 to conform to the shape of the battery cover and automatically correct the battery cover, thereby ensuring the sealing of the contact between the battery cover and the detection plate 7.

[0021] The moving mechanism 2 includes a servo motor 37, the power output end of which is connected to a lead screw 38. Shaft-side seats 39 are mounted on both sides of the lead screw 38, and a fixed seat 40 is mounted on the outer side of the shaft-side seats 39. The fixed seat 40 is fixedly mounted on the base 1. A nut 41 is connected to the lead screw 38, and a nut moving seat 42 is connected to the nut moving seat 42. A moving plate 43 is mounted on the top of the nut moving seat 42, and slide blocks 44 are mounted on both sides of the bottom of the moving plate 43. A slide rail 45 is slidably connected to the bottom of the slide block 44. The part is equipped with a support base 46, which is installed between the two fixed seats 40. During use, by starting the servo motor 37, the servo motor 37 drives the lead screw 38 to rotate along the shaft side seat 39. During the rotation of the lead screw 38, the lead screw 38 drives the nut 41, the nut 41 drives the nut moving seat 42, the nut moving seat 42 drives the moving plate 43 to move. During the movement of the moving plate 43, the sliding seats 44 on both sides of the bottom drive the sliding seats 44 to slide along the slide rail 45, ensuring the stability of the movement of the moving plate 43.

[0022] The base 11 is fastened to the movable plate 43 by screws, and a handle 47 is installed on the outside of the base 11 for easy handling during disassembly and maintenance.

[0023] The pressing mechanism 6 includes an assembly base 48 mounted on a cover plate 5. Inside the assembly base 48 is a lifting column 49, which has a hollow structure. An air pipe 9 is located inside the lifting column 49. Guide rails 50 are installed on the front, rear, and left sides of the lifting column 49. Guide seats 51 are slidably mounted on the guide rails 50 and are fixedly mounted on the assembly base 48. A rack seat 52 is installed on the right side of the lifting column 49. A drive motor 53 is installed on the outer side of the assembly base 48. The power output end of the drive motor 53 is connected to a drive gear 54. The drive gear 54 meshes with the rack seat 52. A locking plate 55 is installed at the bottom of the lifting column 49. The locking plate 55 is locked onto the detection plate 7 by bolts. During use, the drive motor 53 is started, which drives the drive gear 54 to rotate. This causes the drive gear 54 to move the meshing rack seat 52. The rack seat 52, driven by the drive gear 54, synchronously drives the lifting column 49. The lifting column 49 then drives the guide rail 50 to move vertically along the guide seat 51. In turn, the locking plate 55 drives the detection plate 7 to move.

[0024] The drive motor 53 is equipped with a protective shell 56 on its outer side, which can provide good protection for the drive motor 53.

[0025] Example 2, as Figure 2 and Figure 4 As shown, this embodiment adds the following structure based on embodiment 1: the support sleeve 15 and the limiting plate 16 are integrally formed. The support sleeve 15 is provided with a guide groove 18 that matches the guide rod 14. The guide rod 14 is slidably disposed in the guide groove 18.

[0026] In this embodiment, during use, the guide groove 18 inside the support sleeve 15 ensures the verticality of the support sleeve 15's movement when the support sleeve 15 slides, through the combination of the guide rod 14 and the guide groove 18. The support sleeve 15 and the limiting plate 16 are easy to mold and manufacture so that the pressing spring 17 can be used later.

[0027] Example 3, as Figure 1 , Figure 2 and Figure 4 As shown, this embodiment adds the following structure to the embodiment 2: the top of the support sleeve 15 is provided with a silicone head 19, which is arranged in a semi-circular structure.

[0028] In this embodiment, the silicone head 19 with its semi-circular structure can reduce damage caused by squeezing the battery cover during use, while increasing friction and reducing the sliding phenomenon of the battery cover.

[0029] Example 4, as Figure 1 , Figure 2 , Figure 3 andFigure 4 As shown, this embodiment adds the following structure to the embodiment 1: the base 1 is equipped with fixing plates 20 on both sides of the moving mechanism 2, and the top of the fixing plates 20 is provided with limiting pressure blocks 21.

[0030] In this embodiment, during use, the auxiliary mechanism 3 is driven by the moving mechanism 2. When the auxiliary mechanism 3 moves the battery cover to the lower side of the detection plate 7, the auxiliary mechanism 3 will limit the left and right sides through the fixing plates 20 on both sides, and at the same time slide at the bottom of the limiting pressure block 21 to limit the up and down, so as to ensure that the auxiliary mechanism 3 is in a fixed state during the detection process.

[0031] Example 5, as Figure 1 and Figure 3 As shown, this embodiment adds the following structure based on embodiment 1: a drive assembly 22 is installed on the support plate 4, the power output end of the drive assembly 22 is connected to a movable plate 23, a flexible pad 24 is provided on one side of the movable plate 23, and guide slide rods 25 are installed at both ends of the other side of the movable plate 23. The guide slide rods 25 are slidably arranged on the support plate 4.

[0032] In this embodiment, the auxiliary mechanism 3 moves the battery cover to the lower side of the detection plate 7. After the detection plate 7 contacts the battery cover, the driving component 22 pushes the movable plate 23. The movable plate 23 pushes the flexible pad 24 to move to the side of the battery cover and performs clamping work, further ensuring the fixation of the battery cover. While the movable plate 23 moves, it will drive the guide slide rods 25 on both sides to slide on the support plate 4, further improving the stability of the movement.

[0033] Example 6, as Figure 1 and Figure 3 As shown, this embodiment adds the following structure based on embodiment 5: the drive assembly 22 includes a screw 26, a threaded sleeve 27 connected to the outer side of the screw 26, the threaded sleeve 27 is mounted on the support plate 4, a rotating wheel 28 is mounted on the outer side of the screw 26, a rotating plate 29 is mounted on the inner side of the screw 26, the rotating plate 29 is rotatably disposed in the movable plate 23, and a bearing 30 is mounted on the outer side of the screw 26, one side of the bearing 30 is fixedly mounted on the movable plate 23.

[0034] In this embodiment, during use, rotating the wheel 28 causes the screw 26 to rotate within the threaded sleeve 27 and move along the threaded sleeve 27. During the rotation and movement of the screw 26, the other side of the screw 26 rotates within the bearing 30, causing the rotating plate 29 to rotate within the movable plate 23. The rotating plate 29 pushes the movable plate 23, or the rotating plate 29 pulls the bearing 30, which in turn drives the movable plate 23, thus achieving the adjustment effect.

[0035] The drive component 22 can also be an electric push rod, which pushes the movable plate 23 to move.

[0036] Example 7, as Figure 1 , Figure 2 and Figure 3 As shown, this embodiment adds the following structure based on embodiment 1: a double-layer elastic sealing gasket 31 is installed on the bottom outer side of the detection plate 7, a pressure sensor 32 is installed on one side of the bottom of the detection plate 7, the pressure sensor 32 is connected to a display 33, and the display 33 is installed on the bottom of the cover plate 5.

[0037] In this embodiment, during use, the double-layer elastic sealing gasket 31 at the bottom of the detection plate 7 contacts the edge of the battery cover to seal it, which can prevent gas leakage during air tightness testing. At the same time, the internal air pressure sensor 32 can detect the air pressure inside the battery cover and display the value on the display 33 for easy viewing by the operator.

[0038] Among them, the double-layer elastic sealing gasket 31 has an outer layer of fluororubber to ensure sealing strength, and an inner layer of silicone to adapt to the slight unevenness of the battery cover surface, thereby improving sealing performance and compatibility.

[0039] Example 8, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure to the embodiment 1: an electromagnetic control valve 34 is installed in the air hole 8, and a flow sensor 35 is connected to the output end of the air pipe 9.

[0040] In this embodiment, during use, the airflow input into the battery cover can be controlled by controlling the switch of the electromagnetic control valve 34, and the airflow input into the battery cover can be detected by the flow sensor 35, thereby improving the detection effect.

[0041] Example 9, as Figure 2 and Figure 3 As shown, this embodiment adds the following structure to the embodiment 1: a porous buffer plate 36 is installed at the output end of the air hole 8.

[0042] In this embodiment, during the testing process, compressed air enters the battery cover through the porous buffer plate 36 in the air hole 8 without causing excessive impact. The porous buffer plate 36 can effectively alleviate the pressure impact of compressed air and protect the internal structure of the battery cover.

[0043] Example 10, as Figure 1 As shown, this embodiment adds the following structure to the original embodiment 1: the trachea 9 is a corrugated flexible tube.

[0044] In this embodiment, when the pressing mechanism 6 moves the detection plate 7, the detection plate 7 will move the air tube 9 simultaneously. Since the air tube 9 is a corrugated hose, it can be shortened or lengthened to a certain extent for easy detection.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A device for testing the airtightness of an automotive battery cover, comprising a base (1), characterized in that: A moving mechanism (2) is installed on the top of the base (1), and an auxiliary mechanism (3) is installed on the top of the moving mechanism (2). Support plates (4) are installed on both sides of the base (1) and the top of the support plate (4) is installed with a cover plate (5). A pressing mechanism (6) is installed on the cover plate (5). The power output end of the pressing mechanism (6) is connected to a detection plate (7). An air hole (8) is provided on the detection plate (7). An air pipe (9) is connected to the top of the air hole (8). An air pump (10) is connected to the input end of the air pipe (9). The air pump (10) is installed on the top of the cover plate (5). The auxiliary mechanism (3) includes a base (11) installed on the power output end of the moving mechanism (2). The base (11) has a cavity (12) inside. Several pads (13) are installed in the cavity (12). Guide rods (14) are installed on the top of the several pads (13). A support sleeve (15) is slidably installed on the top of the guide rods (14). The top of the support sleeve (15) passes through the base (11) and extends to its outer side. A limiting plate (16) is provided on the outer side of the bottom of the support sleeve (15). A spring (17) is installed on the bottom of the limiting plate (16). The free end of the spring (17) is installed on the pad (13).

2. The automotive battery cover airtightness testing device according to claim 1, characterized in that: The support sleeve (15) and the limiting plate (16) are integrally formed. The support sleeve (15) is provided with a guide groove (18) that matches the guide rod (14). The guide rod (14) is slidably disposed in the guide groove (18).

3. The automotive battery cover airtightness testing device according to claim 2, characterized in that: The top of the support sleeve (15) is provided with a silicone head (19), which is arranged in a semi-circular structure.

4. The automotive battery cover airtightness testing device according to claim 3, characterized in that: The base (1) has fixed plates (20) installed on both sides of the moving mechanism (2), and the top of the fixed plates (20) is provided with limiting pressure blocks (21).

5. The automotive battery cover airtightness testing device according to claim 4, characterized in that: A drive assembly (22) is installed on the support plate (4). The power output end of the drive assembly (22) is connected to a movable plate (23). A flexible pad (24) is provided on one side of the movable plate (23). Guide slide rods (25) are installed at both ends of the other side of the movable plate (23). The guide slide rods (25) are slidably arranged on the support plate (4).

6. The automotive battery cover airtightness testing device according to claim 5, characterized in that: The drive assembly (22) includes a screw (26), a threaded sleeve (27) connected to the outside of the screw (26), the threaded sleeve (27) being mounted on a support plate (4), a rotating wheel (28) being mounted on the outside of the screw (26), a rotating plate (29) being mounted on the inside of the screw (26), the rotating plate (29) being rotatably disposed within a movable plate (23), and a bearing (30) being mounted on the outside of the screw (26), one side of the bearing (30) being fixedly mounted on the movable plate (23).

7. The automotive battery cover airtightness testing device according to claim 6, characterized in that: A double-layer elastic sealing gasket (31) is installed on the bottom outer side of the detection plate (7), and a pressure sensor (32) is installed on one side of the bottom of the detection plate (7). The pressure sensor (32) is connected to a display (33), and the display (33) is installed on the bottom of the cover plate (5).

8. The automotive battery cover airtightness testing device according to claim 7, characterized in that: An electromagnetic control valve (34) is installed inside the air hole (8), and a flow sensor (35) is connected to the output end of the air pipe (9).

9. The automotive battery cover airtightness testing device according to claim 8, characterized in that: A porous buffer plate (36) is installed at the output end of the air hole (8).

10. The automotive battery cover airtightness testing device according to claim 9, characterized in that: The trachea (9) is a corrugated flexible tube.

Images