Low-resistance AGM partition plate extrusion device

Abstract

The invention relates to the technical field of AGM partition plate extrusion, in particular to a low-resistance AGM partition plate extrusion device which comprises a recycling box and a bearing table fixed to the upper portion of the recycling box, an inner cavity of the bearing table is rotationally connected with an extrusion table, and the side edge of the recycling box is fixedly connected with a side plate. According to the low-resistance AGM partition plate extrusion device, vertical static pressure and horizontal centrifugal force are combined. Vertical pressure is applied to the partition plate in the extrusion table through the extrusion plate, and most of free electrolyte is primarily discharged; meanwhile, the driving mechanism drives the extrusion table to horizontally rotate, and strong centrifugal force is generated. The centrifugal force can effectively overcome surface tension and adsorption force of liquid in a micropore structure of the partition plate, and electrolyte remaining in the deep layer is thoroughly thrown out. The effect of the dynamic extrusion mode is far better than that of a traditional single static pressure mode, it is ensured that the content of electrolyte in the partition plate is highly uniform, and a reliable guarantee is provided for follow-up accurate resistance measurement.

Description

Technical Field

[0001] This invention relates to the field of AGM separator extrusion technology, specifically to a low-resistance AGM separator extrusion device. Background Technology

[0002] AGM (aluminum gluconate) separators are key components in valve-regulated sealed lead-acid batteries. Their function is to isolate the positive and negative electrodes, while simultaneously absorbing electrolyte and maintaining internal gas recombination. Low resistance is one of the core indicators for evaluating AGM separator performance, directly affecting the battery's internal resistance and high-current discharge capability. During the manufacturing and performance testing of the separators, it is necessary to simulate the pressure conditions experienced during battery assembly and accurately measure their resistance under these conditions.

[0003] Currently, conventional extrusion devices for AGM separators have significant limitations. Most devices can only perform simple static vertical extrusion, making it difficult to efficiently and thoroughly remove the electrolyte trapped in the microporous structure of the separator's glass fiber. This is because a single vertical pressure is insufficient to overcome the surface tension and capillary forces of the liquid within the micropores, resulting in uneven electrolyte residue and severely affecting the accuracy of subsequent resistance measurements. Furthermore, existing technologies lack effective means to assist in draining the electrolyte during extrusion, thus limiting testing efficiency and data reliability.

[0004] Therefore, there is an urgent need in the field for a squeezing device that can achieve deep and efficient drainage to improve the accuracy and consistency of low-resistance AGM separator testing. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a low-resistance AGM diaphragm extrusion device, which solves the aforementioned problems.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a low-resistance AGM separator extrusion device, comprising a recycling bin and a receiving platform fixed above the recycling bin. An extrusion platform is rotatably connected to the inner cavity of the receiving platform. A side plate is fixedly connected to the side of the recycling bin. A lifting plate driven by a hydraulic rod is slidably connected to the surface of the side plate. A top cover plate is rotatably connected to the bottom of the lifting plate via a rotating rod. An extrusion plate is fixedly connected to the bottom of the top cover plate. An extrusion groove adapted to the extrusion plate is opened in the inner cavity of the extrusion platform. The inner cavity of the extrusion platform communicates with the inner cavity of the recycling bin via a leakage groove. A driving mechanism for driving the extrusion platform to rotate is provided on the side of the receiving platform. A drain port is provided in the inner cavity of the recycling bin.

[0007] As a further aspect of the present invention: the pressing plate and the lifting plate are both rolledly connected to ball bearings on opposite sides, and the force is distributed through the ball bearings to disperse the reaction force on the rotating rod, so that the pressing plate and the lifting plate can be made to rotate smoothly.

[0008] As a further aspect of the present invention: the driving mechanism includes a driving motor fixed to the side of the receiving platform, a driving gear fixedly connected to the output shaft end of the driving motor, and a toothed groove that meshes with the driving gear on the surface of the extrusion platform. The driving motor drives the driving gear to rotate, thereby causing the extrusion platform to rotate and the upper cover plate above to rotate together.

[0009] As a further aspect of the present invention: a positioning ring is fixedly connected to the side of the upper cover plate, and a positioning rod located directly below the center hole of the positioning ring is fixedly connected to the surface of the extrusion table. When the upper cover plate descends and the extrusion plate enters the extrusion table, the positioning rod is inserted into the positioning ring to lock the upper cover plate and the extrusion table, so that they can rotate synchronously.

[0010] As a further aspect of the present invention: a sealing gasket is fixedly connected to the bottom of the upper cover plate, and the sealing gasket abuts against the top of the receiving platform to achieve contact sealing.

[0011] As a further aspect of the present invention, the extrusion table has inclined surfaces on both sides that slope from the sides to the middle, which can effectively prevent electrode liquid from splashing.

[0012] Compared with the prior art, the present invention has the following advantages: This invention achieves highly efficient deep electrolyte drainage through a combination of pressure and centrifugal force: The core innovation lies in combining vertical hydrostatic pressure with horizontal centrifugal force. Vertical pressure is applied to the partitions within the extrusion stage by the extrusion plate, initially discharging most of the free electrolyte. Simultaneously, the drive mechanism rotates the extrusion stage horizontally, generating a powerful centrifugal force. This centrifugal force effectively overcomes the surface tension and adsorption forces of the liquid within the microporous structure of the partitions, thoroughly expelling any remaining electrolyte from deeper layers. This dynamic extrusion mode far surpasses the effect of traditional single hydrostatic pressure, ensuring a highly uniform electrolyte content within the partitions and providing a reliable guarantee for subsequent accurate resistance measurements.

[0013] Precise alignment and stable transmission during the extrusion and rotation processes are ensured: the positioning rod and positioning ring work together to form a precise positioning and locking mechanism. When the upper cover plate descends, the positioning rod simultaneously inserts into the center hole of the positioning ring. This structure not only ensures precise alignment between the extrusion plate and the extrusion groove, avoiding bias pressure, but also rigidly connects the upper cover plate and the extrusion table into a single unit when the extrusion table rotates at high speed. This ensures the reliability, stability, and synchronization of power transmission, preventing equipment damage or liquid leakage that may be caused by relative motion.

[0014] The structural stress distribution and sealing performance have been optimized: ball bearings are installed on opposite sides of both the extrusion plate and the lifting plate, effectively dispersing the reaction force and bending moment experienced by the rotating rod under enormous extrusion pressure and rotational torque, thus improving the structural stability and service life of the entire lifting and rotation system. Simultaneously, the sealing gasket fixedly connected to the bottom of the upper cover plate can tightly abut against the top of the receiving platform during extrusion and rotation, forming an effective dynamic seal and preventing electrolyte from overflowing or splashing from the top of the extrusion chamber during high-speed rotation.

[0015] Effective guidance and collection of liquid, preventing splashing: The two sides of the extrusion platform are designed with inclined surfaces that slope from the sides towards the center. During rotation, these inclined surfaces guide the electrolyte, which is thrown towards the sidewalls by centrifugal force, to flow towards the leakage tank in the central area, achieving orderly and controllable collection of the liquid and significantly reducing turbulent flow of liquid within the cavity and the potential risk of spillage. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention.

[0017] In the diagram: 1. Recycling bin; 2. Side plate; 3. Receiving platform; 4. Squeezing platform; 5. Squeezing groove; 6. Leakage groove; 7. Lifting plate; 8. Rotating rod; 9. Top cover plate; 10. Ball bearing; 11. Sealing gasket; 12. Positioning rod; 13. Squeezing plate; 14. Drive gear; 15. Positioning ring. Detailed Implementation

[0018] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0019] Please see Figure 1-2 This invention provides a technical solution: a low-resistance AGM separator extrusion device, including a recycling box 1 and a receiving platform 3 fixed above the recycling box 1. An extrusion platform 4 is rotatably connected to the inner cavity of the receiving platform 3. A side plate 2 is fixedly connected to the side of the recycling box 1. A lifting plate 7 driven by a hydraulic rod is slidably connected to the surface of the side plate 2. An upper cover plate 9 is rotatably connected to the bottom of the lifting plate 7 via a rotating rod 8. An extrusion plate 13 is fixedly connected to the bottom of the upper cover plate 9. An extrusion groove adapted to the extrusion plate 13 is opened in the inner cavity of the extrusion platform 4. The inner cavity of the extrusion platform 4 is connected to the inner cavity of the recycling box 1 through a leakage groove 6. A driving mechanism for driving the extrusion platform 4 to rotate is provided on the side of the receiving platform 3. A drain port 16 is provided in the inner cavity of the recycling box 1.

[0020] Both the extrusion plate 13 and the lifting plate 7 are connected to rolling balls 10 on opposite sides. The balls 10 bear the force and disperse the reaction force on the rotating rod 8, which allows the extrusion plate 13 and the lifting plate 7 to move smoothly.

[0021] The driving mechanism includes a drive motor fixed to the side of the receiving platform 3. The output shaft of the drive motor is fixedly connected to a drive gear 14. The surface of the extrusion platform 4 is provided with a tooth groove that meshes with the drive gear 14. The drive motor drives the drive gear 14 to rotate, thereby causing the extrusion platform 4 to rotate and the upper cover plate 9 above to rotate together.

[0022] A positioning ring 15 is fixedly connected to the side of the upper cover plate 9, and a positioning rod 12 located directly below the center hole of the positioning ring 15 is fixedly connected to the surface of the extrusion table 4. When the upper cover plate 9 descends and the extrusion plate 13 enters the extrusion table 4, the positioning rod 12 is inserted into the positioning ring 15 to lock the upper cover plate 9 and the extrusion table 4 so that they can rotate synchronously.

[0023] A sealing gasket 11 is fixedly connected to the bottom of the upper cover plate 9, and the sealing gasket 11 abuts against the top of the receiving platform 3 to achieve contact sealing.

[0024] The extrusion table 4 has inclined surfaces on both sides that slope from the sides to the middle, which can effectively prevent electrode liquid from splashing.

[0025] In use, the first stage of this invention is loading and initial positioning. The operator places the AGM separator sample, saturated with electrolyte, into the extrusion groove inside the extrusion table 4. Then, the hydraulic rod driving the lifting plate 7 is activated, causing it to slide downwards along the surface of the side plate 2. The lifting plate 7, via the rotating rod 8, lowers the upper cover plate 9 and the extrusion plate 13 fixed to its bottom.

[0026] Phase Two: Precision Extrusion and Synchronous Rotary Spraying As the upper cover plate 9 continues to descend, the sealing gasket 11 at its bottom first contacts and presses against the top of the receiving platform 3, forming a reliable seal. Immediately afterwards, the extrusion plate 13 precisely enters the extrusion groove of the extrusion platform 4, while the positioning rod 12 is inserted into the center hole of the positioning ring 15, completing precise positioning and rigid locking.

[0027] The hydraulic system applies continuous pressure, and the extrusion plate 13 forcefully and vertically extrudes the separator sample, initially discharging a large amount of electrolyte. Simultaneously, the drive motor starts, and through the drive gear 14 engaging the grooves on the surface of the extrusion platform 4, it drives the locked extrusion platform 4 and the upper cover plate 9 to rotate horizontally at high speed. The powerful centrifugal force generated by the rotation, combined with the vertical extrusion force, acts on the separator, efficiently and completely "throwing" out the electrolyte trapped deep within the micropores of the glass fiber. Under the action of centrifugal force, the discharged electrolyte is quickly guided to the leakage trough 6 at the bottom of the inner cavity of the extrusion platform 4 and flows into the recovery tank 1 below for temporary storage. The inclined surfaces on both sides of the extrusion platform 4 play a good guiding role in this process, ensuring the orderly collection of liquid.

[0028] Phase 3: Repositioning and Drainage When the preset squeezing and rotating liquid-throwing time ends, the drive motor stops first, and the squeezing table 4 stops rotating. Then, the hydraulic rod lifts the lifting plate 7, causing the upper cover plate 9 and the squeezing plate 13 to rise and reset, and the positioning rod 12 subsequently retracts from the positioning ring 15. At this point, the operator can remove the processed partition sample. The electrolyte accumulated in the recovery tank 1 can be periodically discharged from the drain port 16.

[0029] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A low-resistance AGM diaphragm extrusion device, comprising a recycling bin (1) and a receiving platform (3) fixed above the recycling bin (1), wherein an extrusion platform (4) is rotatably connected to the inner cavity of the receiving platform (3), characterized in that: The side of the recycling box (1) is fixedly connected to a side plate (2), and a lifting plate (7) driven by a hydraulic rod is slidably connected to the surface of the side plate (2). The bottom of the lifting plate (7) is rotatably connected to an upper cover plate (9) via a rotating rod (8). The bottom of the upper cover plate (9) is fixedly connected to a squeezing plate (13). The inner cavity of the squeezing table (4) is provided with a squeezing groove (5) adapted to the squeezing plate (13). The inner cavity of the squeezing table (4) is connected to the inner cavity of the recycling box (1) via a drain groove (6). The side of the receiving platform (3) is provided with a driving mechanism for driving the squeezing table (4) to rotate. The inner cavity of the recycling box (1) is provided with a drain port (16).

2. The low-resistance AGM diaphragm extrusion device according to claim 1, characterized in that: Both the extrusion plate (13) and the lifting plate (7) are connected to rolling balls (10) on opposite sides.

3. The low-resistance AGM diaphragm extrusion device according to claim 1, characterized in that: The driving mechanism includes a drive motor fixed on the side of the receiving platform (3), and a drive gear (14) is fixedly connected to the output shaft end of the drive motor. The surface of the extrusion platform (4) is provided with a tooth groove that meshes with the drive gear (14).

4. The low-resistance AGM diaphragm extrusion device according to claim 1, characterized in that: A positioning ring (15) is fixedly connected to the side of the upper cover plate (9), and a positioning rod (12) located directly below the center hole of the positioning ring (15) is fixedly connected to the surface of the extrusion table (4).

5. The low-resistance AGM diaphragm extrusion device according to claim 1, characterized in that: A sealing gasket (11) is fixedly connected to the bottom of the upper cover plate (9), and the sealing gasket (11) abuts against the top of the receiving platform (3) to achieve contact sealing.

6. The low-resistance AGM diaphragm extrusion device according to claim 1, characterized in that: The extrusion table (4) has inclined surfaces on both sides that slope from the side to the middle.

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