A battery box cover airtightness testing device

Abstract

The utility model discloses a battery box cover air tightness detection device, including a detection platform and a door frame, an air pipe is fixedly connected through the surface of the detection platform, and the air pipe input end is connected through the air tightness detection instrument, and a first conveyor and a second conveyor are set up on both sides of the detection platform, a sliding seat is slidably sleeved on the top surface of the door frame, and a top plate is fixedly installed on the top surface of the sliding seat, and an electric cylinder is fixedly installed on the bottom surface of the sliding seat, a lifting frame is fixedly installed on the bottom surface of the moving rod of the electric cylinder, and a suction cup is fixedly installed on the bottom surface of the lifting frame, and a vacuum and inflation dual-purpose pump is fixedly installed on the top surface of the lifting frame, and the output end of the vacuum and inflation dual-purpose pump is connected through the conveying pipe. Beneficial effect: The utility model adopts a lifting frame, and the device completes the transfer, picking up and fixing of the battery box cover through the electric cylinder and the lifting frame, and the detection process does not require manual fixing, disassembly and transfer operations by the staff, which significantly improves the convenience of use and improves the detection efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of battery box air tightness detection, in particular to a battery box cover air tightness detection device. Background Art

[0002] The battery of a new energy vehicle is generally installed in the middle of the chassis, avoiding the front and rear parts that are prone to collision. Since the battery is heavy, installing it in the middle of the chassis is also conducive to lowering the center of gravity of the new energy vehicle and improving the stability of the vehicle body. The battery box that carries the battery is fixed in the middle of the chassis to protect the battery and must have functions such as waterproof, dustproof, and anti-collision. Therefore, the battery box of a new energy vehicle must have good air tightness, and the air tightness of the battery box needs to be tested before leaving the factory. Since the battery box of a new energy vehicle is large in size and heavy in weight, it is generally composed of a seamless connection between the upper and lower covers. The lower cover, as the main component that carries multiple batteries, is welded with multiple components to form a multi-grid structure, so the air tightness test of the lower cover is particularly important.

[0003] After searching, it was found that the application number is CN202211591231.5, and the name is battery box lower cover airtightness detection device and its airtightness detection method and repair method. The application proposes that some current battery box lower cover airtightness detection devices for new energy vehicles have the problem that the joint with the battery box lower cover is not strong enough, and the airtightness level that can be detected is not high enough, which may lead to the risk of not being able to detect some small micro gaps, and water seepage may occur after long-term use. When the battery box lower cover is pressed down, the bottom of the silicone strip is squeezed downward and diffused laterally, so that the opposite side walls of the silicone strip are moved closer to the middle and press the outer end ring side wall of the battery box lower cover, thereby enhancing the sealing effect. Compared with a single-sided flat silicone strip, the silicone strip of the present application has a better sealing effect on the lower cover of the battery box. The risk of air leakage at this joint is low, the detection interference is small, and the result of detecting airtightness is more accurate. However, in actual use, this application requires staff to manually install and disassemble the lower cover of the battery box, and requires transportation and transfer. The lower cover of the battery box is heavy and the operation is more troublesome. At this stage, the method of using a robot for transportation cannot simultaneously fix the sealing of the battery box cover, which is also more troublesome and can be further improved. At the same time, the sealing structure of this application is more precise, requiring staff to perform precise docking, which also increases the inconvenience of operation and can be further improved.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a battery box cover air tightness detection device, which has the advantages of simple structure and easy use, thereby solving the problems in the above-mentioned background technology.

[0007] (II) Technical solution

[0008] In order to achieve the above advantages of simple structure and convenient use, the specific technical solutions adopted by the utility model are as follows:

[0009] A battery box cover air tightness detection device comprises a detection platform and a door frame, an air pipe is fixedly connected through the surface of the detection platform, and the air pipe input end is connected through the air tightness detection instrument, and a first conveyor and a second conveyor are set up on both sides of the detection platform, a sliding seat is slidably sleeved on the top surface of the door frame, and a top plate is fixedly installed on the top surface of the sliding seat, and an electric cylinder is fixedly installed on the bottom surface of the sliding seat, a hanging frame is fixedly installed on the bottom surface of the moving rod of the electric cylinder, and a suction cup is fixedly installed on the bottom surface of the hanging frame, and a vacuum and inflation dual-purpose pump is fixedly installed on the top surface of the hanging frame, the output end of the vacuum and inflation dual-purpose pump is connected through the delivery pipe, and the other end of the delivery pipe is connected through the suction cup, end plates are fixedly connected at both ends of the top surface of the door frame, and screws are rotatably connected between the end plates, and the screws penetrate the top plate and are threadedly connected to the top plate, a servo motor is fixedly installed on the other side surface of the end plate, and the output end of the servo motor is fixedly connected to one end of the screw.

[0010] Furthermore, a silicone pad is fixedly attached to the top surface of the detection table, and the thickness of the silicone pad is not less than 3 cm.

[0011] Furthermore, the trachea passes through the silicone pad, and the outer wall of the trachea is sealed and connected to the silicone pad.

[0012] Furthermore, a guide rod is vertically fixedly installed on the top surface of the hanging frame, and a guide frame is fixedly installed on the bottom surface of the sliding seat. The guide rod passes through the guide frame and is slidably connected to the guide frame.

[0013] Furthermore, the screw is rotatably connected to the end plate via a bearing, and the screw is arranged parallel to the top surface of the portal frame.

[0014] Furthermore, the servo motor, the air-extraction and inflation dual-purpose pump and the electric cylinder are all used in conjunction with a controller, and the output end of the controller is electrically connected to the input ends of the servo motor, the air-extraction and inflation dual-purpose pump and the electric cylinder.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a battery box cover air tightness detection device, which has the following beneficial effects:

[0017] (1) The utility model adopts a hanging frame. When the battery box cover is tested for air tightness, the battery box cover can be placed upside down on the top surface of the first conveyor. The first conveyor conveys the battery box cover. Then, the servo motor drives the screw to rotate, drives the top plate and the sliding seat to move, drives the hanging frame to move above the battery box cover, and the electric cylinder extends to push the bottom of the suction cup to press against the bottom surface of the battery box cover. The air-inflating and air-extracting dual-purpose pump starts to pump air, extracts the air inside the suction cup, and sucks the battery box cover. Then, the electric cylinder shortens, and the servo motor continues to drive the screw to rotate, moving the battery box cover to the top of the air pipe. The electric cylinder extends a second time to push the battery box cover to press against the silicone pad. The battery box cover squeezes the silicone pad to cause the silicone pad to deform. , seal the gap to achieve a sealing effect, then, the airtightness tester supplies air to the partition inside the battery box cover through the air pipe, and detects its airtightness by the degree of air pressure attenuation. After the test is completed, the electric cylinder shortens twice, and the servo motor continues to drive the screw to rotate, moving the hanging frame to the top of the second conveyor, and the electric cylinder extends three times, and the air-extraction and inflation dual-purpose pump is used to inflate, and then the battery box cover can be placed on the top surface of the second conveyor, and the second conveyor conveys the battery box cover to the next process. The device completes the transfer, picking up and fixing of the battery box cover through the electric cylinder and the hanging frame. The detection process does not require manual fixing, disassembly and transfer operations by the staff, which significantly improves the convenience of use and improves the detection efficiency.

[0018] (2) The utility model adopts a silicone pad, which is laid flat as a whole. The thickness of the silicone pad is not less than 3 cm, providing sufficient deformation space. The staff only needs to align the partition space inside the battery box cover roughly with the bottom of the air pipe to carry out the inspection. No precise positioning is required, which simplifies the structure and further improves the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of a battery box cover air tightness detection device proposed by the utility model;

[0021] Figure 2 It is a structural schematic diagram of the hanging frame proposed by the utility model;

[0022] Figure 3 It is a structural schematic diagram of the sliding seat proposed by the utility model;

[0023] Figure 4 It is a structural schematic diagram of the detection platform proposed by the utility model.

[0024] In the figure:

[0025] 1. Test table; 2. Silicone pad; 3. Air pipe; 4. Air tightness tester; 5. First conveyor; 6. Second conveyor; 7. Door frame; 8. Screw; 9. End plate; 10. Servo motor; 11. Sliding seat; 12. Top plate; 13. Guide frame; 14. Guide rod; 15. Electric cylinder; 16. Vacuum and inflation dual-purpose pump; 17. Lifting frame; 18. Suction cup; 19. Conveying pipe. DETAILED DESCRIPTION

[0026] To further illustrate each embodiment, the present invention provides drawings, which are part of the disclosure of the present invention and are mainly used to illustrate the embodiments. They can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0027] According to an embodiment of the utility model, a battery box cover air tightness detection device is provided.

[0028] The present invention is now further described in conjunction with the accompanying drawings and specific implementation methods. Figure 1-4As shown, a battery box cover air tightness detection device according to an embodiment of the utility model comprises a detection platform 1 and a door frame 7, an air pipe 3 is fixedly connected to the surface of the detection platform 1, and an air tightness detector 4 is connected to the input end of the air pipe 3, the top of the air pipe 3 is arranged corresponding to the separation space of the battery box cover, and a first conveyor 5 and a second conveyor 6 are set up on both sides of the detection platform 1, a sliding seat 11 is slidably sleeved on the top surface of the door frame 7, and a top plate 12 is fixedly installed on the top surface of the sliding seat 11, and an electric cylinder 15 is fixedly installed on the bottom surface of the sliding seat 11, a hanging frame 17 is fixedly installed on the bottom surface of the moving rod of the electric cylinder 15, and a suction cup 18 is fixedly installed on the bottom surface of the hanging frame 17, and the suction cup 18 is arranged in plurality, and a vacuum and inflation dual-purpose pump 16 is fixedly installed on the top surface of the hanging frame 17, and a delivery pipe 19 is connected to the output end of the vacuum and inflation dual-purpose pump 16, and the other end of the delivery pipe 19 is connected to the suction cup 18, and the end plates 9 are fixedly connected to the two ends of the top surface of the door frame 7, and a screw 8 is rotatably connected between the end plates 9, and the screw 8 passes through the top plate 12 and is threadedly connected to the top plate 12, and a servo motor 10 is fixedly installed on the other side of the end plate 9, and the output end of the servo motor 10 is fixedly connected to one end of the screw 8. When the battery box cover is tested for air tightness, the battery box cover can be inverted and placed on the top surface of the first conveyor 5, and the first conveyor 5 conveys the battery box cover, and then After that, the servo motor 10 drives the screw rod 8 to rotate, drives the top plate 12 and the sliding seat 11 to move, drives the hanging frame 17 to move to the top of the battery box cover, and the electric cylinder 15 extends to push the bottom of the suction cup 18 to press against the bottom of the battery box cover, and the air-inflation dual-purpose pump 16 starts to pump air, extracts the air inside the suction cup 18, and sucks the battery box cover. Then, the electric cylinder 15 shortens, and the servo motor 10 continues to drive the screw rod 8 to rotate, and moves the battery box cover to the top of the air pipe 3. The electric cylinder 15 extends for the second time, pushes the battery box cover to press against the silicone pad 2, and the battery box cover squeezes the silicone pad 2 to deform the silicone pad 2, plugs the gap, and achieves a sealing effect. Then, the airtightness detector 4 passes through the air pipe 3 supplies air to the partition inside the battery box cover, and detects its air tightness through the degree of air pressure attenuation. After the detection is completed, the electric cylinder 15 is shortened twice, and the servo motor 10 continues to drive the screw 8 to rotate, and the hanging frame 17 is moved to the top of the second conveyor 6. The electric cylinder 15 is extended three times, and the air-extraction and air-inflation dual-purpose pump 16 is inflated, so that the battery box cover can be placed on the top surface of the second conveyor 6. The second conveyor 6 conveys the battery box cover to the next process. The device completes the transfer, picking up and fixing of the battery box cover through the electric cylinder 15 and the hanging frame 17. The detection process does not require manual fixing, disassembly and transfer operations by the staff, which significantly improves the convenience of use and improves the detection efficiency.

[0029] In one embodiment, a silicone pad 2 is fixedly attached to the top surface of the testing table 1, and the thickness of the silicone pad 2 is not less than 3 cm. The silicone pad 2 is laid flat as a whole to provide sufficient deformation space. The staff only needs to align the partition space inside the battery box cover roughly with the bottom of the air pipe 3 to perform testing. No precise positioning is required, which simplifies the structure and further improves the convenience of use.

[0030] In one embodiment, the air tube 3 passes through the silicone pad 2, and the outer wall of the air tube 3 is sealed and connected to the silicone pad 2 to avoid air leakage.

[0031] In one embodiment, a guide rod 14 is vertically fixedly installed on the top surface of the hanging frame 17, and a guide frame 13 is fixedly installed on the bottom surface of the sliding seat 11. The guide rod 14 passes through the guide frame 13 and is slidably connected to the guide frame 13. The guide rod 14 serves as a lifting guide for the hanging frame 17, which facilitates the stable lifting of the lifting frame.

[0032] In one embodiment, the screw rod 8 is rotatably connected to the end plate 9 via a bearing, and the screw rod 8 is arranged parallel to the top surface of the door frame 7 to improve the rotation stability of the screw rod 8.

[0033] In one embodiment, the servo motor 10, the air suction and inflation dual-purpose pump 16 and the electric cylinder 15 are all used in conjunction with a controller, and the output end of the controller is electrically connected to the input end of the servo motor 10, the air suction and inflation dual-purpose pump 16 and the electric cylinder 15, which is a common control structure and is not shown in detail in the figure.

[0034] Working principle:

[0035] When the battery box cover is tested for air tightness, the battery box cover can be placed upside down on the top surface of the first conveyor 5, and the first conveyor 5 conveys the battery box cover. Subsequently, the servo motor 10 drives the screw rod 8 to rotate, drives the top plate 12 and the sliding seat 11 to move, and drives the hanging frame 17 to move above the battery box cover. The electric cylinder 15 extends, pushes the bottom of the suction cup 18 to press against the bottom surface of the battery box cover, and the air-inflation dual-purpose pump 16 starts to pump air, extracts the air inside the suction cup 18, and sucks the battery box cover. Subsequently, the electric cylinder 15 shortens, and the servo motor 10 continues to drive the screw rod 8 to rotate, and moves the battery box cover to the top of the air pipe 3. The electric cylinder 15 extends a second time, pushing the battery box cover to press against the silicone pad 2. The battery box cover squeezes the silicone pad 2 to deform the silicone pad 2, seals the gap, and achieves a sealing effect. Subsequently, the air-tightness detector 4 supplies air to the partition inside the battery box cover through the air pipe 3, and detects its air pressure by the degree of air pressure attenuation. After the tightness test is completed, the electric cylinder 15 is shortened for the second time, and the servo motor 10 continues to drive the screw 8 to rotate, moving the hanging frame 17 to the top of the second conveyor 6. The electric cylinder 15 is extended for the third time, and the vacuum and inflation dual-purpose pump 16 is inflated, so that the battery box cover can be placed on the top surface of the second conveyor 6, and the second conveyor 6 conveys the battery box cover to the next process. The device completes the transfer, picking up and fixing of the battery box cover through the electric cylinder 15 and the hanging frame 17. The inspection process does not require manual fixing, disassembly and transfer operations by the staff, which significantly improves the convenience of use and improves the inspection efficiency. At the same time, the silicone pad 2 is laid flat as a whole, and the thickness of the silicone pad 2 is not less than 3 cm, providing sufficient deformation space. The staff only needs to align the partition space inside the battery box cover roughly with the bottom of the air pipe 3 for inspection. No precise positioning is required, which simplifies the structure and further improves the convenience of use.

[0036] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery box cover air tightness detection device, characterized in that: The invention comprises a testing platform (1) and a door frame (7), wherein an air pipe (3) is fixedly connected to the surface of the testing platform (1), and an air tightness tester (4) is connected to the input end of the air pipe (3), and a first conveyor (5) and a second conveyor (6) are arranged on both sides of the testing platform (1), a sliding seat (11) is slidably sleeved on the top surface of the door frame (7), and a top plate (12) is fixedly installed on the top surface of the sliding seat (11), and an electric cylinder (15) is fixedly installed on the bottom surface of the sliding seat (11), a hanging frame (17) is fixedly installed on the bottom surface of the moving rod of the electric cylinder (15), and a suction cup is fixedly installed on the bottom surface of the hanging frame (17) (18), and a vacuum and inflation dual-purpose pump (16) is fixedly installed on the top surface of the hanging frame (17), the output end of the vacuum and inflation dual-purpose pump (16) is connected with a delivery pipe (19), and the other end of the delivery pipe (19) is connected with the suction cup (18), the two ends of the top surface of the door frame (7) are fixedly connected with end plates (9), and the end plates (9) are rotatably connected with a screw rod (8), and the screw rod (8) passes through the top plate (12) and is threadedly connected to the top plate (12), and a servo motor (10) is fixedly installed on the other side surface of the end plate (9), and the output end of the servo motor (10) is fixedly connected to one end of the screw rod (8).

2. A battery box cover air tightness detection device according to claim 1, characterized in that: A silicone pad (2) is fixedly attached to the top surface of the detection platform (1), and the thickness of the silicone pad (2) is not less than 3 cm.

3. A battery box cover air tightness detection device according to claim 1, characterized in that: The air pipe (3) passes through the silicone pad (2), and the outer wall of the air pipe (3) is sealedly connected to the silicone pad (2).

4. A battery box cover air tightness detection device according to claim 1, characterized in that: A guide rod (14) is vertically fixedly mounted on the top surface of the hanging frame (17), a guide frame (13) is fixedly mounted on the bottom surface of the sliding seat (11), and the guide rod (14) penetrates the guide frame (13) and is slidably connected to the guide frame (13).

5. The battery box cover air tightness detection device according to claim 1, characterized in that: The screw rod (8) is rotatably connected to the end plate (9) via a bearing, and the screw rod (8) is arranged parallel to the top surface of the door frame (7).

6. The battery box cover air tightness detection device according to claim 1, characterized in that: The servo motor (10), the dual-purpose pump for exhausting and inflating (16), and the electric cylinder (15) are all used in conjunction with a controller, and an output end of the controller is electrically connected to input ends of the servo motor (10), the dual-purpose pump for exhausting and inflating (16), and the electric cylinder (15).

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