Battery exhaust cover air filter piece air pressure difference detection device

Abstract

The utility model provides a kind of battery exhaust cover filter piece breathable pressure difference detection device, belong to lead-acid battery technical field, including workbench and pressure difference detection component.The upper end surface of workbench is equipped with operation base plate, and positioning structure for placing and positioning the product to be detected is arranged on operation base plate;Pressure difference detection component includes the air flange symmetrically arranged in the both sides of positioning structure, and the air flange is close to the side of positioning structure and is equipped with airtight tube, and the end of airtight tube is equipped with the airtight head compatible with the air hole of product to be detected, and the side of air flange away from positioning structure is connected with linear drive, and linear drive is fixed on the upper end surface of operation base plate, for driving air flange to be close to or away from product to be detected.The utility model provides a kind of battery exhaust cover filter piece breathable pressure difference detection device, can solve the problem of low efficiency, big error of artificial detection, and the problem of insufficient positioning accuracy of detection equipment to product.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery technology, and more specifically, it relates to a device for detecting the air pressure difference of the filter plate of a battery exhaust cover. Background Technology

[0002] In the manufacturing process of batteries, the vent cover filter is a critical component, and its air permeability pressure difference performance directly affects the safety and service life of the battery. If the air permeability pressure difference of the filter does not meet the standard, it may lead to internal pressure imbalance in the battery, causing serious problems such as leakage and explosion. Therefore, accurate testing of the air permeability pressure difference of the battery vent cover filter is an important step in ensuring product quality.

[0003] Currently, traditional methods for detecting the differential pressure of battery exhaust cover filters mostly rely on manual operation or simple mechanical assistance. Manual testing depends on the operator's experience and subjective judgment, resulting in low efficiency, large errors, and poor consistency, making it difficult to meet the quality control requirements of large-scale production. Furthermore, some existing simple testing equipment lacks sufficient positioning accuracy for the product being tested, failing to ensure accurate alignment between the filter and the testing component during each test, leading to inaccurate test data. Utility Model Content

[0004] The purpose of this invention is to provide a device for detecting the air pressure difference of a battery exhaust cover filter, which aims to solve the problems of low efficiency and large error in manual inspection, and insufficient product positioning accuracy of inspection equipment.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a device for detecting the differential pressure of the filter element in a battery exhaust cover, comprising:

[0006] A workbench, the upper surface of which is equipped with a working base plate, and the working base plate is provided with a positioning structure for placing and positioning the product to be tested;

[0007] The differential pressure detection component includes vent flanges symmetrically arranged on both sides of the positioning structure. An airtight pipe is provided on the side of the vent flange closer to the positioning structure. An airtight head adapted to the air vent of the product to be tested is provided at the end of the airtight pipe. A linear drive is connected to the side of the vent flange away from the positioning structure. The linear drive is fixed to the upper surface of the working base plate and is used to drive the vent flange closer to or away from the product to be tested.

[0008] In one possible implementation, the workbench includes:

[0009] The main frame, with the working base plate fixed to the upper surface of the main frame;

[0010] Multiple support legs are provided, and the support legs are respectively arranged circumferentially on the lower end face of the main frame. The bottom of the support legs is provided with a foot fixing plate.

[0011] In one possible implementation, the positioning structure includes a boss located in the middle of the working base plate, the upper end face of the boss having a positioning groove for placing the product to be tested, and the circumferential inner wall of the positioning groove for positioning the product to be tested.

[0012] In one possible implementation, the inner wall of the positioning groove slopes outward from bottom to top.

[0013] In one possible implementation, the bottom of the positioning groove has a through hole that penetrates the working base plate.

[0014] In one possible implementation, the vent flange has a longitudinal air passage, and the airtight pipe has an axial air passage inside that connects to the longitudinal air passage, the axial air passage extending to the airtight head.

[0015] In one possible implementation, the outer diameter of the airtight head is smaller than the outer diameter of the airtight tube, so as to form a stepped platform on the outer periphery of the airtight head, and a sealing ring is fitted on the outer periphery of the airtight head, the sealing ring abutting against the stepped platform.

[0016] In one possible implementation, the end of the airtight head has a tapered structure.

[0017] In one possible implementation, the linear drive is a cylinder, the cylinder body of which is fixed to the upper end face of the working base plate, and the piston end of the cylinder is fixedly connected to the vent flange.

[0018] In one possible implementation, multiple positioning structures are arranged side-by-side at intervals on the working base plate, and each positioning structure has a vent flange symmetrically arranged on both sides.

[0019] The beneficial effects of the battery exhaust cover filter pressure difference detection device provided by this utility model are as follows: Compared with the prior art, the product to be tested is placed and positioned on the positioning structure. After the product is positioned, the linear drive on the working base plate starts to work, driving the connected vent flange to move towards the product. The vent flange drives the airtight pipe and airtight head to approach the product's air hole. Because the airtight head is compatible with the air hole of the product, it can fit tightly and form a good airtight connection. Throughout the entire testing process, the linear drive operates automatically according to the set program, without the need for manual intervention in the docking and operation of the testing components. This process completely replaces manual testing, greatly improving testing efficiency. At the same time, automated operation avoids errors caused by human experience and subjective judgment, ensuring that the operation process and force are consistent for each test, significantly improving the consistency and accuracy of the test results, and solving the problems of low efficiency and large errors in manual testing.

[0020] After the test is completed, the linear drive reverses direction, moving the vent flange away from the product being tested. The operator can then remove the tested product and place the next product in the loop, continuing the testing process. Through the coordinated operation of all components, this device automates the entire process from product positioning to test completion. It effectively solves the shortcomings of manual testing and existing equipment, and can efficiently and accurately perform differential pressure testing on the battery vent cover filter. This is of great significance for ensuring battery product quality and meeting the quality control requirements of large-scale production. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 A top view of a battery exhaust cover filter gas permeability differential pressure detection device provided by this utility model;

[0023] Figure 2 A working state diagram of a battery exhaust cover filter gas permeability differential pressure detection device provided by this utility model;

[0024] Figure 3 for Figure 2 A magnified view of a section at point M;

[0025] Figure 4 A schematic diagram of the structure of the vent flange, airtight pipe and airtight head provided by this utility model.

[0026] In the diagram: 1. Product to be tested; 2. Working base plate; 3. Main frame; 4. Support legs; 5. Foot fixing plate; 6. Boss; 7. Positioning groove; 8. Through hole; 9. Vent flange; 10. Airtight pipe; 11. Airtight head; 12. Axial air passage; 13. Longitudinal air passage; 14. Sealing ring; 15. Linear drive component. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0028] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0029] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0030] Please see Figures 1 to 4 This invention provides a device for detecting the differential pressure of a battery exhaust cover filter. The device includes a workbench and a differential pressure detection assembly. A working base plate 2 is mounted on the upper surface of the workbench. The working base plate 2 has a positioning structure for placing and positioning the product 1 to be tested. The differential pressure detection assembly includes vent flanges 9 symmetrically arranged on both sides of the positioning structure. An airtight pipe 10 is provided on the side of the vent flange 9 closest to the positioning structure. An airtight head 11, adapted to the air vent of the product 1 to be tested, is provided at the end of the airtight pipe 10. A linear drive component 15 is connected to the side of the vent flange 9 furthest from the positioning structure. The linear drive component 15 is fixed to the upper surface of the working base plate 2 and is used to drive the vent flange 9 closer to or further away from the product 1 to be tested.

[0031] This utility model provides a battery exhaust cover filter air permeability pressure difference detection device. Compared with the prior art, the product to be tested 1 is placed and positioned on the positioning structure. After the product to be tested 1 is positioned, the linear drive component 15 on the working base plate 2 starts to work, driving the connected vent flange 9 to move towards the product to be tested 1. The vent flange 9 drives the airtight pipe 10 and the airtight head 11 to approach the product's air hole. Since the airtight head 11 is compatible with the air hole of the product to be tested 1, it can fit tightly and form a good airtight connection. In the entire testing process, the linear drive component 15 operates automatically according to the set program, without the need for manual intervention in the docking and operation of the testing components. This process completely replaces manual testing, greatly improving testing efficiency. At the same time, automated operation avoids errors caused by human experience and subjective judgment, ensuring that the operation process and force are consistent for each test, significantly improving the consistency and accuracy of the test results, and solving the problems of low efficiency and large error in manual testing.

[0032] After the inspection is completed, the linear drive component 15 reverses the direction of the vent flange 9 away from the product to be inspected 1, allowing the operator to remove the inspected product and place the next product to be inspected 1, continuing the above inspection process. If a defective product is detected, it will be placed in the scrap area. Through the coordinated work of all components, this device achieves automated operation from product positioning to inspection completion. It not only effectively solves the shortcomings of manual inspection and existing equipment, but also efficiently and accurately completes the air permeability pressure difference detection of the battery exhaust cover filter, which is of great significance for ensuring the quality of battery products and meeting the quality control requirements of large-scale production.

[0033] Please see Figure 2 The workbench includes a main frame 3 and multiple support legs 4. The working base plate 2 is fixed to the upper surface of the main frame 3; the multiple support legs 4 are circumferentially arranged on the lower surface of the main frame 3, and each support leg 4 has a base plate 5 at its bottom. The main frame 3 serves as the supporting carrier for the working base plate 2, providing a stable installation foundation for it. This allows the working base plate 2 to stably bear the forces generated by the product to be tested 1 and the differential pressure detection components during operation, ensuring the entire testing device maintains structural stability during operation and preventing deviations in the test data due to shaking, thereby improving the accuracy of the test results.

[0034] Multiple support legs 4 are circumferentially positioned on the lower surface of the main frame 3, enhancing the stability of the workbench and distributing the pressure on the main frame 3. This effectively prevents the workbench from tilting or tipping over due to uneven stress. Simultaneously, the support legs 4 increase the height of the workbench, facilitating operations such as product placement and result viewing by operators around the workbench. This optimizes ergonomics and improves operational comfort and convenience. The foot fixing plates 5 at the bottom of the support legs 4 enhance the stability of the workbench's connection to the ground. Fixing the workbench to the ground with the foot fixing plates 5 effectively resists interference from external environmental factors (such as ground vibration and personnel movement), ensuring the testing process is unaffected by external vibrations and guaranteeing the reliability of the test data. Furthermore, the foot fixing plates 5 make workbench installation easier; a simple fixing operation allows the workbench to be installed in a designated location, and its position can be easily adjusted according to the production workshop layout, improving the flexibility and versatility of equipment installation.

[0035] Please see Figure 2 and Figure 3 The positioning structure includes a boss 6 located in the center of the working base plate 2. The upper surface of the boss 6 has a positioning groove 7 for placing the product to be tested 1. The inner circumferential wall of the positioning groove 7 is used to position the product to be tested 1. The boss 6, located in the center of the working base plate 2, concentrates the placement of the product to be tested 1 in the stable central area of ​​the workbench, reducing the center of gravity shift that may occur due to edge placement, and providing a stable foundation for testing. The inner circumferential wall of the positioning groove 7 can closely conform to the outer contour of the product to be tested 1, limiting the product from multiple directions, achieving precise positioning of the product, ensuring that the filter accurately aligns with the testing component during each test, effectively avoiding inaccurate test data due to product placement deviations, and greatly improving the reliability and consistency of test results. This positioning structure is simple and intuitive. Operators only need to place the product to be tested 1 into the positioning groove 7 to quickly complete the product positioning work, eliminating the need for complex operating procedures, reducing operational difficulty, improving operational efficiency, and also reducing testing errors caused by inaccurate manual positioning. It achieves efficient and accurate product positioning, effectively ensuring the smooth progress of the entire testing process and the validity of the test data.

[0036] Please see Figure 3 The inner wall of the positioning groove 7 slopes outward from bottom to top. This sloping design makes the opening of the positioning groove 7 wider at the top and narrower at the bottom. When placing the product to be tested 1, the operator can easily place the product into the groove without precise alignment, reducing the difficulty of placement and improving operational efficiency. At the same time, after the test is completed, the sloping inner wall helps the operator to quickly remove the product, reducing the possibility of the product getting stuck in the positioning groove 7, making the entire testing process smoother.

[0037] Please see Figures 2 to 3The bottom of the positioning groove 7 has a through hole 8 that penetrates the working base plate 2. When performing differential pressure testing on the filter, gas may accumulate in the positioning groove 7, affecting the stability and accuracy of the test. The through hole 8 helps to expel the gas, making the gas flow in the positioning groove 7 smoother, which helps to maintain a stable testing environment and improve testing efficiency and reliability.

[0038] Please see Figures 3 to 4 A longitudinal air passage 13 is provided on the vent flange 9, and an axial air passage 12, which connects to the longitudinal air passage 13, is provided inside the airtight pipe 10. The axial air passage 12 extends to the airtight head 11. An external air source pipe is connected to the longitudinal air passage 13. The air source pipe provides gas that passes sequentially through the longitudinal air passage 13, the axial air passage 12, and the airtight head 11, and finally enters the vent of the product 1 to be tested, providing test gas based on the pressure difference of the filter of the battery exhaust cover. The through-flow design of the longitudinal air passage 13, the axial air passage 12, and the airtight head 11 establishes a gas transmission path. The gas provided by the external air source pipe can flow orderly along the longitudinal air passage 13 and the axial air passage 12, and finally enter the vent of the product 1 to be tested through the airtight head 11, ensuring that the pressure and flow rate of the test gas entering the filter are stable, thereby improving the accuracy and reliability of the test data. Meanwhile, the layout design of the longitudinal air passage 13 and the axial air passage 12 makes the gas transmission path more compact and reasonable, making full use of the internal space of the vent flange 9 and the airtight pipe 10, avoiding the increase in gas resistance caused by excessively long or detour air passages, improving gas transmission efficiency, shortening test preparation time, and thus accelerating the overall test process. Moreover, the adaptable connection between the airtight head 11 and the air hole, together with stable air passage transmission, can maintain a stable air pressure environment during the test, reduce the interference of external factors on the test gas pressure, and ensure the accuracy and consistency of the air permeability pressure difference test results.

[0039] Please see Figures 3 to 4 The outer diameter of the airtight head 11 is smaller than that of the airtight tube 10, forming a stepped platform on the outer periphery of the airtight head 11. A sealing ring 14 is fitted around the outer periphery of the airtight head 11, and the sealing ring 14 abuts against the stepped platform. The stepped platform formed by the difference in outer diameter provides an installation and positioning area for the sealing ring 14, allowing the sealing ring 14 to be stably fitted around the outer periphery of the airtight head 11, and preventing displacement or misalignment during installation, thus improving installation efficiency and accuracy. At the same time, the tight abutment of the sealing ring 14 against the stepped platform forms a double sealing structure when the airtight head 11 is connected to the air hole of the product 1 to be tested, effectively preventing leakage of the test gas from the connection point. Compared with a single sealing method, this significantly improves the airtightness during the testing process, ensures stable test gas pressure, and thus improves the reliability and accuracy of the test data.

[0040] When the airtight head 11 aligns with the air vent, the sealing ring 14 also acts as a buffer, reducing friction and collision caused by direct contact between the two. This prevents damage to the airtight head 11 or the product's air vent due to external forces, extending the service life of both the airtight head 11 and the product 1 under test. It also reduces the risk of testing errors caused by component damage. Furthermore, the sealing ring 14 is mounted on a stepped platform, facilitating quick replacement during equipment maintenance. Repair and replacement of the sealing ring 14 can be completed without complex disassembly, reducing equipment maintenance costs and difficulty, and ensuring long-term stable operation of the testing device.

[0041] Please see Figure 3 and Figure 4 The end of the airtight head 11 has a tapered structure. The tapered end provides good guidance when the airtight head 11 is aligned with the air hole of the product to be tested 1. Operators can quickly insert the airtight head 11 into the air hole without precise alignment, reducing the difficulty of operation and greatly improving the efficiency of the test preparation stage.

[0042] The linear drive component 15 is a cylinder, with its cylinder body fixed to the upper surface of the working base plate 2 using bolts. Similarly, the piston end of the cylinder is fixedly connected to the vent flange 9, also using bolts. After the product 1 to be tested is removed from the mold, it is placed in the positioning groove 7 of the working base plate 2 by a robotic arm. The PLC controls the cylinder to move the vent flange 9, and the airtight head 11 contacts the air hole of the product 1 to form a sealed environment. Two reed switches are installed on the cylinder. The PLC electrically controls the solenoid valves to control the operation of all cylinders. The precise control of the cylinders by the PLC, combined with the stable bolted structure, ensures that the airtight head 11 contacts the position and air hole with a constant force each time. This avoids damage to the product due to excessive pressure and prevents airtightness defects due to insufficient pressure, ensuring a stable testing environment and obtaining accurate and reliable air pressure difference test data.

[0043] Please see Figure 1 Multiple positioning structures are arranged side-by-side at intervals on the working base plate 2, and each positioning structure has symmetrical ventilation flanges 9 on both sides. Multiple positioning structures can simultaneously hold multiple products 1 to be inspected, and with the symmetrical ventilation flanges 9 on both sides, multi-station parallel inspection can be achieved. Compared to inspecting only one product at a time, this significantly shortens the overall inspection time, multiplies inspection efficiency, and fully meets the needs of rapid and efficient inspection in large-scale production, effectively reducing the production cycle.

[0044] Furthermore, when product batches are small, only some positioning structures can be used for testing, avoiding energy and resource waste; while during mass production, all positioning structures can be used to fully utilize the equipment's capacity. In addition, different positioning structures can be adapted to different specifications and models of products. By replacing the corresponding airtight head 11, compatible testing of multiple products can be achieved, greatly improving the versatility and applicability of the testing device.

[0045] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for detecting the air permeability pressure difference of a battery exhaust cover filter, characterized in that, include: The workbench has a working base plate (2) installed on its upper surface. The working base plate (2) is provided with a positioning structure for placing and positioning the product to be tested (1). The differential pressure detection assembly includes vent flanges (9) symmetrically arranged on both sides of the positioning structure. An airtight pipe (10) is provided on the side of the vent flange (9) closer to the positioning structure. An airtight head (11) adapted to the air hole of the product to be tested (1) is provided at the end of the airtight pipe (10). A linear drive (15) is connected to the side of the vent flange (9) away from the positioning structure. The linear drive (15) is fixed to the upper end face of the working base plate (2) and is used to drive the vent flange (9) closer to or away from the product to be tested (1).

2. The battery exhaust cover filter pressure difference detection device as described in claim 1, characterized in that, The workbench includes: The main frame (3) is fixed to the upper surface of the main frame (3); Multiple support legs (4) are arranged circumferentially on the lower end face of the main frame (3), and the bottom of each support leg (4) is provided with a foot fixing plate (5).

3. The device for detecting the air permeability pressure difference of the filter element in a battery exhaust cover as described in claim 1, characterized in that, The positioning structure includes a boss (6) located in the middle of the working base plate (2). The upper end face of the boss (6) is provided with a positioning groove (7) for placing the product to be tested (1). The circumferential inner wall of the positioning groove (7) is used to position the product to be tested (1).

4. The battery exhaust cover filter pressure difference detection device as described in claim 3, characterized in that, The inner wall of the positioning groove (7) slopes outward from bottom to top.

5. The battery exhaust cover filter pressure difference detection device as described in claim 3, characterized in that, The bottom of the positioning groove (7) is provided with a through hole (8) that penetrates the working base plate (2).

6. The device for detecting the air permeability pressure difference of the filter element in a battery exhaust cover as described in claim 1, characterized in that, The vent flange (9) has a longitudinal air passage (13), and the airtight pipe (10) has an axial air passage (12) that connects to the longitudinal air passage (13), and the axial air passage (12) extends to the airtight head (11).

7. The battery exhaust cover filter pressure difference detection device as described in claim 1, characterized in that, The outer diameter of the airtight head (11) is smaller than the outer diameter of the airtight pipe (10) to form a stepped platform on the outer periphery of the airtight head (11). A sealing ring (14) is fitted on the outer periphery of the airtight head (11) and the sealing ring (14) abuts against the stepped platform.

8. The device for detecting the air permeability pressure difference of the filter element in a battery exhaust cover as described in claim 1, characterized in that, The end of the airtight head (11) has a tapered structure.

9. The battery exhaust cover filter pressure difference detection device as described in claim 1, characterized in that, The linear drive (15) is a cylinder, the cylinder body is fixed to the upper end face of the working base plate (2), and the piston end of the cylinder is fixedly connected to the vent flange (9).

10. A device for detecting the air permeability pressure difference of a battery exhaust cover filter as described in any one of claims 1-9, characterized in that, Multiple positioning structures are arranged side by side at intervals on the working base plate (2), and each positioning structure has a ventilation flange (9) symmetrically arranged on both sides.

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